fix(back-end): shift model

.gitea/workflows/cicd.yaml

@@ -125,23 +125,13 @@ jobs:
 
           ssh-keyscan -H "${{ secrets.SERVER_HOST }}" >> ~/.ssh/known_hosts 2>/dev/null
 
-      - name: Write env and compose to server
+      - name: Write env to server
         shell: bash
         run: |
-          # 1. Recalculate TAG and OWNER_LOWER (jobs don't share ENV)
-          if [[ "${{ gitea.ref }}" == "refs/heads/main" ]]; then
-            DEPLOY_TAG="prod"
-          elif [[ "${{ gitea.ref }}" == "refs/heads/int" ]]; then
-            DEPLOY_TAG="int"
-          else
-            DEPLOY_TAG="dev"
-          fi
-          DEPLOY_OWNER=$(echo '${{ gitea.repository_owner }}' | tr '[:upper:]' '[:lower:]')
-
-          # 2. Start with the static env file content
+          # 1. Start with the static env file content
           cat "deploy/envs/${{ env.ENV }}.env" > /tmp/full_env.env
 
-          # 3. Determine DB credentials
+          # 2. Determine DB credentials
           if [[ "${{ env.ENV }}" == "prod" ]]; then
             DB_URL="${{ secrets.DB_URL_PROD }}"
             DB_USER="${{ secrets.DB_USERNAME_PROD }}"
@@ -156,25 +146,18 @@ jobs:
             DB_PASS="${{ secrets.DB_PASSWORD_DEV }}"
           fi
 
-          # 4. Append DB and Docker credentials (quoted)
-          printf '\nDB_URL="%s"\nDB_USERNAME="%s"\nDB_PASSWORD="%s"\n' \
+          # 3. Append DB credentials
+          printf '\nDB_URL=%s\nDB_USERNAME=%s\nDB_PASSWORD=%s\n' \
             "$DB_URL" "$DB_USER" "$DB_PASS" >> /tmp/full_env.env
 
-          printf 'REGISTRY_URL="%s"\nREPO_OWNER="%s"\nTAG="%s"\n' \
-            "${{ secrets.REGISTRY_URL }}" "$DEPLOY_OWNER" "$DEPLOY_TAG" >> /tmp/full_env.env
-
-          # 5. Debug: print content (for debug purposes)
+          # 4. Debug: print content (for debug purposes)
           echo "Preparing to send env file with variables:"
           grep -v "PASSWORD" /tmp/full_env.env || true
 
-          # 5. Send env to server
+          # 5. Send to server
           ssh -i ~/.ssh/id_ed25519 -o BatchMode=yes "${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }}" \
             "setenv ${{ env.ENV }}" < /tmp/full_env.env
             
-          # 6. Send docker-compose.deploy.yml to server
-          ssh -i ~/.ssh/id_ed25519 -o BatchMode=yes "${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }}" \
-            "setcompose ${{ env.ENV }}" < docker-compose.deploy.yml
-            
 
 
       - name: Trigger deploy on Unraid (forced command key)

backend/Dockerfile

@@ -11,7 +11,7 @@ RUN ./gradlew bootJar -x test --no-daemon
 # Stage 2: Runtime Environment
 FROM eclipse-temurin:21-jre-jammy
 
-# Install system dependencies for OrcaSlicer (same as before)
+# Install system dependencies for OrcaSlicer
 RUN apt-get update && apt-get install -y \
     wget \
     p7zip-full \
@@ -20,6 +20,14 @@ RUN apt-get update && apt-get install -y \
     libgtk-3-0 \
     libdbus-1-3 \
     libwebkit2gtk-4.0-37 \
+    libx11-xcb1 \
+    libxcb-dri3-0 \
+    libxtst6 \
+    libnss3 \
+    libatk-bridge2.0-0 \
+    libxss1 \
+    libasound2 \
+    libgbm1 \
     && rm -rf /var/lib/apt/lists/*
 
 # Install OrcaSlicer

backend/build.gradle

@@ -37,7 +37,6 @@ dependencies {
 	implementation 'io.github.openhtmltopdf:openhtmltopdf-svg-support:1.1.37'
 	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
 	implementation 'net.codecrete.qrbill:qrbill-generator:3.4.0'
-	implementation 'org.springframework.boot:spring-boot-starter-mail'
 
 
 

backend/entrypoint.sh

@@ -3,25 +3,13 @@ echo "----------------------------------------------------------------"
 echo "Starting Backend Application"
 echo "DB_URL: $DB_URL"
 echo "DB_USERNAME: $DB_USERNAME"
-echo "SPRING_DATASOURCE_URL: $SPRING_DATASOURCE_URL"
 echo "SLICER_PATH: $SLICER_PATH"
 echo "--- ALL ENV VARS ---"
 env
 echo "----------------------------------------------------------------"
 
-# Determine which environment variables to use for database connection
-# This allows compatibility with different docker-compose configurations
-FINAL_DB_URL="${DB_URL:-$SPRING_DATASOURCE_URL}"
-FINAL_DB_USER="${DB_USERNAME:-$SPRING_DATASOURCE_USERNAME}"
-FINAL_DB_PASS="${DB_PASSWORD:-$SPRING_DATASOURCE_PASSWORD}"
-
-if [ -n "$FINAL_DB_URL" ]; then
-  echo "Using database URL: $FINAL_DB_URL"
-  exec java -jar app.jar \
-    --spring.datasource.url="${FINAL_DB_URL}" \
-    --spring.datasource.username="${FINAL_DB_USER}" \
-    --spring.datasource.password="${FINAL_DB_PASS}"
-else
-  echo "No database URL specified in environment, relying on application.properties defaults."
-  exec java -jar app.jar
-fi
+# Exec java with explicit properties from env
+exec java -jar app.jar \
+  --spring.datasource.url="${DB_URL}" \
+  --spring.datasource.username="${DB_USERNAME}" \
+  --spring.datasource.password="${DB_PASSWORD}"

backend/src/main/java/com/printcalculator/BackendApplication.java

@@ -3,14 +3,12 @@ package com.printcalculator;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.scheduling.annotation.EnableScheduling;
-import org.springframework.scheduling.annotation.EnableAsync;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 @SpringBootApplication
 @EnableTransactionManagement
 @EnableScheduling
-@EnableAsync
 public class BackendApplication {
 
 	public static void main(String[] args) {

backend/src/main/java/com/printcalculator/controller/CustomQuoteRequestController.java

@@ -25,17 +25,15 @@ public class CustomQuoteRequestController {
 
     private final CustomQuoteRequestRepository requestRepo;
     private final CustomQuoteRequestAttachmentRepository attachmentRepo;
-    private final com.printcalculator.service.ClamAVService clamAVService;
     
-    // TODO: Inject Storage Service
-    private static final String STORAGE_ROOT = "storage_requests";
+    private final com.printcalculator.service.StorageService storageService;
 
     public CustomQuoteRequestController(CustomQuoteRequestRepository requestRepo,
                                         CustomQuoteRequestAttachmentRepository attachmentRepo,
-                                        com.printcalculator.service.ClamAVService clamAVService) {
+                                        com.printcalculator.service.StorageService storageService) {
         this.requestRepo = requestRepo;
         this.attachmentRepo = attachmentRepo;
-        this.clamAVService = clamAVService;
+        this.storageService = storageService;
     }
 
     // 1. Create Custom Quote Request
@@ -71,9 +69,6 @@ public class CustomQuoteRequestController {
             for (MultipartFile file : files) {
                 if (file.isEmpty()) continue;
                 
-                // Scan for virus
-                clamAVService.scan(file.getInputStream());
-                
                 CustomQuoteRequestAttachment attachment = new CustomQuoteRequestAttachment();
                 attachment.setRequest(request);
                 attachment.setOriginalFilename(file.getOriginalFilename());
@@ -97,10 +92,8 @@ public class CustomQuoteRequestController {
                 attachment.setStoredRelativePath(relativePath);
                 attachmentRepo.save(attachment);
                 
-                // Save file to disk
-                Path absolutePath = Paths.get(STORAGE_ROOT, relativePath);
-                Files.createDirectories(absolutePath.getParent());
-                Files.copy(file.getInputStream(), absolutePath);
+                // Save file to disk via StorageService
+                storageService.store(file, Paths.get(relativePath));
             }
         }
         

backend/src/main/java/com/printcalculator/controller/DevEmailTestController.java

@@ -1,47 +0,0 @@
-package com.printcalculator.controller;
-
-import org.springframework.context.annotation.Profile;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-import org.thymeleaf.TemplateEngine;
-import org.thymeleaf.context.Context;
-
-import java.time.OffsetDateTime;
-import java.time.format.DateTimeFormatter;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
-
-@RestController
-@RequestMapping("/api/dev/email")
-@Profile("local")
-public class DevEmailTestController {
-
-    private final TemplateEngine templateEngine;
-
-    public DevEmailTestController(TemplateEngine templateEngine) {
-        this.templateEngine = templateEngine;
-    }
-
-    @GetMapping("/test-template")
-    public ResponseEntity<String> testTemplate() {
-        Context context = new Context();
-        Map<String, Object> templateData = new HashMap<>();
-        UUID orderId = UUID.randomUUID();
-        templateData.put("customerName", "Mario Rossi");
-        templateData.put("orderId", orderId);
-        templateData.put("orderNumber", orderId.toString().split("-")[0]);
-        templateData.put("orderDetailsUrl", "https://tuosito.it/ordine/" + orderId);
-        templateData.put("orderDate", OffsetDateTime.now().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
-        templateData.put("totalCost", "45.50");
-        
-        context.setVariables(templateData);
-        String html = templateEngine.process("email/order-confirmation", context);
-        
-        return ResponseEntity.ok()
-                .header("Content-Type", "text/html; charset=utf-8")
-                .body(html);
-    }
-}

backend/src/main/java/com/printcalculator/controller/OptionsController.java

@@ -65,6 +65,20 @@ public class OptionsController {
                 .filter(m -> m != null)
                 .collect(Collectors.toList());
         
+        // Sort: PLA first, then PETG, then others alphabetically
+        materialOptions.sort((a, b) -> {
+            String codeA = a.code();
+            String codeB = b.code();
+            
+            if (codeA.equals("pla_basic")) return -1;
+            if (codeB.equals("pla_basic")) return 1;
+            
+            if (codeA.equals("petg_basic")) return -1;
+            if (codeB.equals("petg_basic")) return 1;
+            
+            return codeA.compareTo(codeB);
+        });
+
         // 2. Qualities (Static as per user request)
         List<OptionsResponse.QualityOption> qualities = List.of(
                 new OptionsResponse.QualityOption("draft", "Draft"),

backend/src/main/java/com/printcalculator/controller/OrderController.java

@@ -7,7 +7,6 @@ import com.printcalculator.service.InvoicePdfRenderingService;
 import com.printcalculator.service.OrderService;
 import com.printcalculator.service.QrBillService;
 import com.printcalculator.service.StorageService;
-import com.printcalculator.service.TwintPaymentService;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
@@ -25,9 +24,7 @@ import java.util.List;
 import java.util.UUID;
 import java.util.Map;
 import java.util.HashMap;
-import java.util.Base64;
 import java.util.stream.Collectors;
-import java.net.URI;
 
 @RestController
 @RequestMapping("/api/orders")
@@ -42,7 +39,6 @@ public class OrderController {
     private final StorageService storageService;
     private final InvoicePdfRenderingService invoiceService;
     private final QrBillService qrBillService;
-    private final TwintPaymentService twintPaymentService;
 
 
     public OrderController(OrderService orderService,
@@ -53,8 +49,7 @@ public class OrderController {
                            CustomerRepository customerRepo,
                            StorageService storageService,
                            InvoicePdfRenderingService invoiceService,
-                           QrBillService qrBillService,
-                           TwintPaymentService twintPaymentService) {
+                           QrBillService qrBillService) {
         this.orderService = orderService;
         this.orderRepo = orderRepo;
         this.orderItemRepo = orderItemRepo;
@@ -64,7 +59,6 @@ public class OrderController {
         this.storageService = storageService;
         this.invoiceService = invoiceService;
         this.qrBillService = qrBillService;
-        this.twintPaymentService = twintPaymentService;
     }
 
 
@@ -135,7 +129,7 @@ public class OrderController {
         vars.put("sellerAddressLine2", "Sede Bienne, Svizzera");
         vars.put("sellerEmail", "info@3dfab.ch");
 
-        vars.put("invoiceNumber", "INV-" + getDisplayOrderNumber(order).toUpperCase());
+        vars.put("invoiceNumber", "INV-" + order.getId().toString().substring(0, 8).toUpperCase());
         vars.put("invoiceDate", order.getCreatedAt().format(DateTimeFormatter.ISO_LOCAL_DATE));
         vars.put("dueDate", order.getCreatedAt().plusDays(7).format(DateTimeFormatter.ISO_LOCAL_DATE));
 
@@ -187,56 +181,11 @@ public class OrderController {
         byte[] pdf = invoiceService.generateInvoicePdfBytesFromTemplate(vars, qrBillSvg);
 
         return ResponseEntity.ok()
-                .header("Content-Disposition", "attachment; filename=\"invoice-" + getDisplayOrderNumber(order) + ".pdf\"")
+                .header("Content-Disposition", "attachment; filename=\"invoice-" + orderId + ".pdf\"")
                 .contentType(MediaType.APPLICATION_PDF)
                 .body(pdf);
     }
     
-    @GetMapping("/{orderId}/twint")
-    public ResponseEntity<Map<String, String>> getTwintPayment(@PathVariable UUID orderId) {
-        if (!orderRepo.existsById(orderId)) {
-            return ResponseEntity.notFound().build();
-        }
-
-        byte[] qrPng = twintPaymentService.generateQrPng(360);
-        String qrDataUri = "data:image/png;base64," + Base64.getEncoder().encodeToString(qrPng);
-
-        Map<String, String> data = new HashMap<>();
-        data.put("paymentUrl", twintPaymentService.getTwintPaymentUrl());
-        data.put("openUrl", "/api/orders/" + orderId + "/twint/open");
-        data.put("qrImageUrl", "/api/orders/" + orderId + "/twint/qr");
-        data.put("qrImageDataUri", qrDataUri);
-        return ResponseEntity.ok(data);
-    }
-
-    @GetMapping("/{orderId}/twint/open")
-    public ResponseEntity<Void> openTwintPayment(@PathVariable UUID orderId) {
-        if (!orderRepo.existsById(orderId)) {
-            return ResponseEntity.notFound().build();
-        }
-
-        return ResponseEntity.status(302)
-                .location(URI.create(twintPaymentService.getTwintPaymentUrl()))
-                .build();
-    }
-
-    @GetMapping("/{orderId}/twint/qr")
-    public ResponseEntity<byte[]> getTwintQr(
-            @PathVariable UUID orderId,
-            @RequestParam(defaultValue = "320") int size
-    ) {
-        if (!orderRepo.existsById(orderId)) {
-            return ResponseEntity.notFound().build();
-        }
-
-        int normalizedSize = Math.max(200, Math.min(size, 600));
-        byte[] png = twintPaymentService.generateQrPng(normalizedSize);
-
-        return ResponseEntity.ok()
-                .contentType(MediaType.IMAGE_PNG)
-                .body(png);
-    }
-    
     private String getExtension(String filename) {
         if (filename == null) return "stl";
         int i = filename.lastIndexOf('.');
@@ -249,7 +198,6 @@ public class OrderController {
     private OrderDto convertToDto(Order order, List<OrderItem> items) {
         OrderDto dto = new OrderDto();
         dto.setId(order.getId());
-        dto.setOrderNumber(getDisplayOrderNumber(order));
         dto.setStatus(order.getStatus());
         dto.setCustomerEmail(order.getCustomerEmail());
         dto.setCustomerPhone(order.getCustomerPhone());
@@ -307,12 +255,4 @@ public class OrderController {
         return dto;
     }
 
-    private String getDisplayOrderNumber(Order order) {
-        String orderNumber = order.getOrderNumber();
-        if (orderNumber != null && !orderNumber.isBlank()) {
-            return orderNumber;
-        }
-        return order.getId() != null ? order.getId().toString() : "unknown";
-    }
-
 }

backend/src/main/java/com/printcalculator/controller/QuoteController.java

@@ -1,11 +1,15 @@
 package com.printcalculator.controller;
 
 import com.printcalculator.entity.PrinterMachine;
+import com.printcalculator.exception.ModelTooLargeException;
 import com.printcalculator.model.PrintStats;
 import com.printcalculator.model.QuoteResult;
+import com.printcalculator.model.StlBounds;
 import com.printcalculator.repository.PrinterMachineRepository;
 import com.printcalculator.service.QuoteCalculator;
+import com.printcalculator.service.ProfileManager;
 import com.printcalculator.service.SlicerService;
+import com.printcalculator.service.StlService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -15,24 +19,29 @@ import java.util.HashMap;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.logging.Logger;
 
 @RestController
 public class QuoteController {
 
+    private static final Logger logger = Logger.getLogger(QuoteController.class.getName());
+
     private final SlicerService slicerService;
+    private final StlService stlService;
     private final QuoteCalculator quoteCalculator;
     private final PrinterMachineRepository machineRepo;
-    private final com.printcalculator.service.ClamAVService clamAVService;
+    private final ProfileManager profileManager;
 
     // Defaults (using aliases defined in ProfileManager)
     private static final String DEFAULT_FILAMENT = "pla_basic";
     private static final String DEFAULT_PROCESS = "standard";
 
-    public QuoteController(SlicerService slicerService, QuoteCalculator quoteCalculator, PrinterMachineRepository machineRepo, com.printcalculator.service.ClamAVService clamAVService) {
+    public QuoteController(SlicerService slicerService, StlService stlService, QuoteCalculator quoteCalculator, PrinterMachineRepository machineRepo, ProfileManager profileManager) {
         this.slicerService = slicerService;
+        this.stlService = stlService;
         this.quoteCalculator = quoteCalculator;
         this.machineRepo = machineRepo;
-        this.clamAVService = clamAVService;
+        this.profileManager = profileManager;
     }
 
     @PostMapping("/api/quote")
@@ -46,7 +55,7 @@ public class QuoteController {
             @RequestParam(value = "infill_pattern", required = false) String infillPattern,
             @RequestParam(value = "layer_height", required = false) Double layerHeight,
             @RequestParam(value = "nozzle_diameter", required = false) Double nozzleDiameter,
-            @RequestParam(value = "support_enabled", required = false) Boolean supportEnabled
+            @RequestParam(value = "support_enabled", required = false, defaultValue = "false") Boolean supportEnabled
             ) throws IOException {
 
         // ... process selection logic ...
@@ -74,6 +83,9 @@ public class QuoteController {
         }
         if (supportEnabled != null) {
             processOverrides.put("enable_support", supportEnabled ? "1" : "0");
+            if (supportEnabled) {
+                processOverrides.put("support_threshold_angle", "45");
+            }
         }
 
         if (nozzleDiameter != null) {
@@ -83,7 +95,7 @@ public class QuoteController {
             // For now, we trust the override key works on the base profile.
         }
 
-        return processRequest(file, filament, actualProcess, machineOverrides, processOverrides);
+        return processRequest(file, filament, actualProcess, machineOverrides, processOverrides, nozzleDiameter);
     }
 
     @PostMapping("/calculate/stl")
@@ -91,42 +103,91 @@ public class QuoteController {
             @RequestParam("file") MultipartFile file
     ) throws IOException {
         // Legacy endpoint uses defaults
-        return processRequest(file, DEFAULT_FILAMENT, DEFAULT_PROCESS, null, null);
+        return processRequest(file, DEFAULT_FILAMENT, DEFAULT_PROCESS, null, null, null);
     }
 
     private ResponseEntity<QuoteResult> processRequest(MultipartFile file, String filament, String process,
                                                        Map<String, String> machineOverrides,
-                                                       Map<String, String> processOverrides) throws IOException {
+                                                       Map<String, String> processOverrides,
+                                                       Double nozzleDiameter) throws IOException {
         if (file.isEmpty()) {
             return ResponseEntity.badRequest().build();
         }
 
-        // Scan for virus
-        clamAVService.scan(file.getInputStream());
-
         // Fetch Default Active Machine
         PrinterMachine machine = machineRepo.findFirstByIsActiveTrue()
                 .orElseThrow(() -> new IOException("No active printer found in database"));
 
         // Save uploaded file temporarily
         Path tempInput = Files.createTempFile("upload_", "_" + file.getOriginalFilename());
+        com.printcalculator.model.StlShiftResult shift = null;
         try {
             file.transferTo(tempInput.toFile());
 
-            String slicerMachineProfile = "bambu_a1"; // TODO: Add to PrinterMachine entity
+            // Use profile from machine or fallback
+            String slicerMachineProfile = machine.getSlicerMachineProfile();
+            if (slicerMachineProfile == null || slicerMachineProfile.isEmpty()) {
+                slicerMachineProfile = "bambu_a1"; 
+            }
+            slicerMachineProfile = profileManager.resolveMachineProfileName(slicerMachineProfile, nozzleDiameter);
 
-            PrintStats stats = slicerService.slice(tempInput.toFile(), slicerMachineProfile, filament, process, machineOverrides, processOverrides);
+            // Validate model size against machine volume
+            StlBounds bounds = validateModelSize(tempInput.toFile(), machine);
+
+            // Auto-center if needed
+            shift = stlService.shiftToFitIfNeeded(
+                    tempInput.toFile(),
+                    bounds,
+                    machine.getBuildVolumeXMm(),
+                    machine.getBuildVolumeYMm(),
+                    machine.getBuildVolumeZMm()
+            );
+            java.io.File sliceInput = shift.shifted() ? shift.shiftedPath().toFile() : tempInput.toFile();
+            if (shift.shifted()) {
+                logger.info(String.format("Auto-centered STL by offset (mm): x=%.3f y=%.3f z=%.3f",
+                        shift.offsetX(), shift.offsetY(), shift.offsetZ()));
+            }
+
+            PrintStats stats = slicerService.slice(sliceInput, slicerMachineProfile, filament, process, machineOverrides, processOverrides);
             
             // Calculate Quote (Pass machine display name for pricing lookup)
             QuoteResult result = quoteCalculator.calculate(stats, machine.getPrinterDisplayName(), filament);
             
             return ResponseEntity.ok(result);
-
-        } catch (Exception e) {
-            e.printStackTrace();
-            return ResponseEntity.internalServerError().build();
         } finally {
             Files.deleteIfExists(tempInput);
+            if (shift != null && shift.shifted()) {
+                try {
+                    Files.deleteIfExists(shift.shiftedPath());
+                } catch (Exception ignored) {}
+            }
         }
     }
+
+    private StlBounds validateModelSize(java.io.File stlFile, PrinterMachine machine) throws IOException {
+        StlBounds bounds = stlService.readBounds(stlFile);
+        double x = bounds.sizeX();
+        double y = bounds.sizeY();
+        double z = bounds.sizeZ();
+
+        int bx = machine.getBuildVolumeXMm();
+        int by = machine.getBuildVolumeYMm();
+        int bz = machine.getBuildVolumeZMm();
+
+        logger.info(String.format(
+                "STL bounds (mm): min(%.3f,%.3f,%.3f) max(%.3f,%.3f,%.3f) size(%.3f,%.3f,%.3f) bed(%d,%d,%d)",
+                bounds.minX(), bounds.minY(), bounds.minZ(),
+                bounds.maxX(), bounds.maxY(), bounds.maxZ(),
+                x, y, z, bx, by, bz
+        ));
+
+        double eps = 0.01;
+        boolean fits = (x <= bx + eps && y <= by + eps && z <= bz + eps)
+                || (y <= bx + eps && x <= by + eps && z <= bz + eps);
+
+        if (!fits) {
+            throw new ModelTooLargeException(x, y, z, bx, by, bz);
+        }
+        return bounds;
+    }
 }

backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java

@@ -3,13 +3,17 @@ package com.printcalculator.controller;
 import com.printcalculator.entity.PrinterMachine;
 import com.printcalculator.entity.QuoteLineItem;
 import com.printcalculator.entity.QuoteSession;
+import com.printcalculator.exception.ModelTooLargeException;
 import com.printcalculator.model.PrintStats;
 import com.printcalculator.model.QuoteResult;
+import com.printcalculator.model.StlBounds;
 import com.printcalculator.repository.PrinterMachineRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
 import com.printcalculator.service.QuoteCalculator;
+import com.printcalculator.service.ProfileManager;
 import com.printcalculator.service.SlicerService;
+import com.printcalculator.service.StlService;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
@@ -28,19 +32,24 @@ import java.util.Map;
 import java.util.UUID;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.UrlResource;
+import java.util.logging.Logger;
 
 @RestController
 @RequestMapping("/api/quote-sessions")
 
 public class QuoteSessionController {
 
+    private static final Logger logger = Logger.getLogger(QuoteSessionController.class.getName());
+
     private final QuoteSessionRepository sessionRepo;
     private final QuoteLineItemRepository lineItemRepo;
     private final SlicerService slicerService;
+    private final StlService stlService;
     private final QuoteCalculator quoteCalculator;
+    private final ProfileManager profileManager;
     private final PrinterMachineRepository machineRepo;
     private final com.printcalculator.repository.PricingPolicyRepository pricingRepo;
-    private final com.printcalculator.service.ClamAVService clamAVService;
+    private final com.printcalculator.service.StorageService storageService;
 
     // Defaults
     private static final String DEFAULT_FILAMENT = "pla_basic";
@@ -49,17 +58,21 @@ public class QuoteSessionController {
     public QuoteSessionController(QuoteSessionRepository sessionRepo,
                                   QuoteLineItemRepository lineItemRepo,
                                   SlicerService slicerService,
+                                  StlService stlService,
                                   QuoteCalculator quoteCalculator,
+                                  ProfileManager profileManager,
                                   PrinterMachineRepository machineRepo,
                                   com.printcalculator.repository.PricingPolicyRepository pricingRepo,
-                                  com.printcalculator.service.ClamAVService clamAVService) {
+                                  com.printcalculator.service.StorageService storageService) {
         this.sessionRepo = sessionRepo;
         this.lineItemRepo = lineItemRepo;
         this.slicerService = slicerService;
+        this.stlService = stlService;
         this.quoteCalculator = quoteCalculator;
+        this.profileManager = profileManager;
         this.machineRepo = machineRepo;
         this.pricingRepo = pricingRepo;
-        this.clamAVService = clamAVService;
+        this.storageService = storageService;
     }
 
     // 1. Start a new empty session
@@ -102,13 +115,8 @@ public class QuoteSessionController {
     private QuoteLineItem addItemToSession(QuoteSession session, MultipartFile file, com.printcalculator.dto.PrintSettingsDto settings) throws IOException {
         if (file.isEmpty()) throw new IOException("File is empty");
 
-        // Scan for virus
-        clamAVService.scan(file.getInputStream());
-
         // 1. Define Persistent Storage Path
-        // Structure: storage_quotes/{sessionId}/{uuid}.{ext}
-        String storageDir = "storage_quotes/" + session.getId();
-        Files.createDirectories(Paths.get(storageDir));
+        // Structure: quotes/{sessionId}/{uuid}.{ext} (inside storage root)
         
         String originalFilename = file.getOriginalFilename();
         String ext = originalFilename != null && originalFilename.contains(".") 
@@ -116,11 +124,15 @@ public class QuoteSessionController {
                      : ".stl";
         
         String storedFilename = UUID.randomUUID() + ext;
-        Path persistentPath = Paths.get(storageDir, storedFilename);
+        Path relativePath = Paths.get("quotes", session.getId().toString(), storedFilename);
         
         // Save file
-        Files.copy(file.getInputStream(), persistentPath);
+        storageService.store(file, relativePath);
         
+        // Resolve absolute path for slicing and storage usage
+        Path persistentPath = storageService.loadAsResource(relativePath).getFile().toPath();
+
+        com.printcalculator.model.StlShiftResult shift = null;
         try {
             // Apply Basic/Advanced Logic
             applyPrintSettings(settings);
@@ -130,12 +142,32 @@ public class QuoteSessionController {
             PrinterMachine machine = machineRepo.findFirstByIsActiveTrue()
                     .orElseThrow(() -> new RuntimeException("No active printer found"));
 
-            // 2. Pick Profiles
-            String machineProfile = machine.getPrinterDisplayName(); // e.g. "Bambu Lab A1 0.4 nozzle"
-            // If the display name doesn't match the json profile name, we might need a mapping key in DB.
-            // For now assuming display name works or we use a tough default
-             machineProfile = "Bambu Lab A1 0.4 nozzle"; // Force known good for now? Or use DB field if exists. 
-             // Ideally: machine.getSlicerProfileName();
+            // 2. Validate model size against machine volume
+            StlBounds bounds = validateModelSize(persistentPath.toFile(), machine);
+
+            // 2b. Auto-center if needed (keeps the stored STL unchanged)
+            shift = stlService.shiftToFitIfNeeded(
+                    persistentPath.toFile(),
+                    bounds,
+                    machine.getBuildVolumeXMm(),
+                    machine.getBuildVolumeYMm(),
+                    machine.getBuildVolumeZMm()
+            );
+            java.io.File sliceInput = shift.shifted() ? shift.shiftedPath().toFile() : persistentPath.toFile();
+            if (shift.shifted()) {
+                logger.info(String.format("Auto-centered STL by offset (mm): x=%.3f y=%.3f z=%.3f",
+                        shift.offsetX(), shift.offsetY(), shift.offsetZ()));
+            }
+            
+            // 3. Pick Profiles
+            String machineProfile = machine.getSlicerMachineProfile();
+            if (machineProfile == null || machineProfile.isBlank()) {
+                machineProfile = machine.getPrinterDisplayName(); // e.g. "Bambu Lab A1 0.4 nozzle"
+            }
+            if (machineProfile == null || machineProfile.isBlank()) {
+                machineProfile = "bambu_a1"; // final fallback (alias handled in ProfileManager)
+            }
+            machineProfile = profileManager.resolveMachineProfileName(machineProfile, settings.getNozzleDiameter());
             
             String filamentProfile = "Generic " + (settings.getMaterial() != null ? settings.getMaterial().toUpperCase() : "PLA");
             // Mapping: "pla_basic" -> "Generic PLA", "petg_basic" -> "Generic PETG"
@@ -144,8 +176,25 @@ public class QuoteSessionController {
                 else if (settings.getMaterial().toLowerCase().contains("petg")) filamentProfile = "Generic PETG";
                 else if (settings.getMaterial().toLowerCase().contains("tpu")) filamentProfile = "Generic TPU";
                 else if (settings.getMaterial().toLowerCase().contains("abs")) filamentProfile = "Generic ABS";
+                
+                // Update Session Material
+                session.setMaterialCode(settings.getMaterial());
+            } else {
+                 // Fallback if null?
+                 session.setMaterialCode("pla_basic");
             }
             
+            // Update Session Settings for Persistence
+            if (settings.getNozzleDiameter() != null) session.setNozzleDiameterMm(BigDecimal.valueOf(settings.getNozzleDiameter()));
+            if (settings.getLayerHeight() != null) session.setLayerHeightMm(BigDecimal.valueOf(settings.getLayerHeight()));
+            if (settings.getInfillDensity() != null) session.setInfillPercent(settings.getInfillDensity().intValue());
+            if (settings.getInfillPattern() != null) session.setInfillPattern(settings.getInfillPattern());
+            if (settings.getSupportsEnabled() != null) session.setSupportsEnabled(settings.getSupportsEnabled());
+            if (settings.getNotes() != null) session.setNotes(settings.getNotes());
+            
+            // Save session updates
+            sessionRepo.save(session);
+
             String processProfile = "0.20mm Standard @BBL A1"; 
             // Mapping quality to process
             // "standard" -> "0.20mm Standard @BBL A1"
@@ -157,26 +206,40 @@ public class QuoteSessionController {
                  else if (settings.getLayerHeight() <= 0.12) processProfile = "0.12mm Fine @BBL A1";
             }
             
+            // Build overrides map from settings
             // Build overrides map from settings
             Map<String, String> processOverrides = new HashMap<>();
             if (settings.getLayerHeight() != null) processOverrides.put("layer_height", String.valueOf(settings.getLayerHeight()));
             if (settings.getInfillDensity() != null) processOverrides.put("sparse_infill_density", settings.getInfillDensity() + "%");
             if (settings.getInfillPattern() != null) processOverrides.put("sparse_infill_pattern", settings.getInfillPattern());
+            if (settings.getSupportsEnabled() != null) {
+                processOverrides.put("enable_support", settings.getSupportsEnabled() ? "1" : "0");
+                // If enabled, use a more permissive threshold (45 deg) by default
+                // to avoid expensive supports on things that don't strictly need them
+                if (settings.getSupportsEnabled()) {
+                    processOverrides.put("support_threshold_angle", "45");
+                }
+            }
             
-            // 3. Slice (Use persistent path)
+            Map<String, String> machineOverrides = new HashMap<>();
+            if (settings.getNozzleDiameter() != null) {
+                machineOverrides.put("nozzle_diameter", String.valueOf(settings.getNozzleDiameter()));
+            }
+
+            // 4. Slice (Use persistent path)
             PrintStats stats = slicerService.slice(
-                persistentPath.toFile(), 
+                sliceInput, 
                 machineProfile, 
                 filamentProfile, 
                 processProfile, 
-                null, // machine overrides
+                machineOverrides, // machine overrides
                 processOverrides
             );
             
-            // 4. Calculate Quote
+            // 5. Calculate Quote
             QuoteResult result = quoteCalculator.calculate(stats, machine.getPrinterDisplayName(), filamentProfile);
 
-            // 5. Create Line Item
+            // 6. Create Line Item
             QuoteLineItem item = new QuoteLineItem();
             item.setQuoteSession(session);
             item.setOriginalFilename(file.getOriginalFilename());
@@ -185,8 +248,8 @@ public class QuoteSessionController {
             item.setColorCode(settings.getColor() != null ? settings.getColor() : "#FFFFFF");
             item.setStatus("READY"); // or CALCULATED
             
-            item.setPrintTimeSeconds((int) stats.printTimeSeconds());
-            item.setMaterialGrams(BigDecimal.valueOf(stats.filamentWeightGrams()));
+            item.setPrintTimeSeconds((int) stats.getPrintTimeSeconds());
+            item.setMaterialGrams(BigDecimal.valueOf(stats.getFilamentWeightGrams()));
             item.setUnitPriceChf(BigDecimal.valueOf(result.getTotalPrice()));
             
             // Store breakdown
@@ -196,14 +259,10 @@ public class QuoteSessionController {
             breakdown.put("setup_fee", result.getSetupCost());
             item.setPricingBreakdown(breakdown);
             
-            // Dimensions
-            // Cannot get bb from GCodeParser yet? 
-            // If GCodeParser doesn't return size, we might defaults or 0.
-            // Stats has filament used. 
-            // Let's set dummy for now or upgrade parser later.
-            item.setBoundingBoxXMm(BigDecimal.ZERO);
-            item.setBoundingBoxYMm(BigDecimal.ZERO);
-            item.setBoundingBoxZMm(BigDecimal.ZERO);
+            // Dimensions from STL
+            item.setBoundingBoxXMm(BigDecimal.valueOf(bounds.sizeX()));
+            item.setBoundingBoxYMm(BigDecimal.valueOf(bounds.sizeY()));
+            item.setBoundingBoxZMm(BigDecimal.valueOf(bounds.sizeZ()));
             
             item.setCreatedAt(OffsetDateTime.now());
             item.setUpdatedAt(OffsetDateTime.now());
@@ -212,11 +271,46 @@ public class QuoteSessionController {
 
         } catch (Exception e) {
             // Cleanup if failed
-            Files.deleteIfExists(persistentPath);
+            try {
+                storageService.delete(Paths.get("quotes", session.getId().toString(), storedFilename));
+            } catch (Exception ignored) {}
             throw e;
+        } finally {
+            if (shift != null && shift.shifted()) {
+                try {
+                    Files.deleteIfExists(shift.shiftedPath());
+                } catch (Exception ignored) {}
+            }
         }
     }
 
+    private StlBounds validateModelSize(java.io.File stlFile, PrinterMachine machine) throws IOException {
+        StlBounds bounds = stlService.readBounds(stlFile);
+        double x = bounds.sizeX();
+        double y = bounds.sizeY();
+        double z = bounds.sizeZ();
+
+        int bx = machine.getBuildVolumeXMm();
+        int by = machine.getBuildVolumeYMm();
+        int bz = machine.getBuildVolumeZMm();
+
+        logger.info(String.format(
+                "STL bounds (mm): min(%.3f,%.3f,%.3f) max(%.3f,%.3f,%.3f) size(%.3f,%.3f,%.3f) bed(%d,%d,%d)",
+                bounds.minX(), bounds.minY(), bounds.minZ(),
+                bounds.maxX(), bounds.maxY(), bounds.maxZ(),
+                x, y, z, bx, by, bz
+        ));
+
+        double eps = 0.01;
+        boolean fits = (x <= bx + eps && y <= by + eps && z <= bz + eps)
+                || (y <= bx + eps && x <= by + eps && z <= bz + eps);
+
+        if (!fits) {
+            throw new ModelTooLargeException(x, y, z, bx, by, bz);
+        }
+        return bounds;
+    }
+
     private void applyPrintSettings(com.printcalculator.dto.PrintSettingsDto settings) {
         if ("BASIC".equalsIgnoreCase(settings.getComplexityMode())) {
             // Set defaults based on Quality
@@ -227,24 +321,30 @@ public class QuoteSessionController {
                     settings.setLayerHeight(0.28);
                     settings.setInfillDensity(15.0);
                     settings.setInfillPattern("grid");
+                    if (settings.getNozzleDiameter() == null) settings.setNozzleDiameter(0.4);
                     break;
                 case "high":
                     settings.setLayerHeight(0.12);
                     settings.setInfillDensity(20.0);
                     settings.setInfillPattern("gyroid");
+                    if (settings.getNozzleDiameter() == null) settings.setNozzleDiameter(0.4);
                     break;
                 case "standard":
                 default:
                     settings.setLayerHeight(0.20);
                     settings.setInfillDensity(20.0);
                     settings.setInfillPattern("grid");
+                    if (settings.getNozzleDiameter() == null) settings.setNozzleDiameter(0.4);
                     break;
             }
+            if (settings.getSupportsEnabled() == null) settings.setSupportsEnabled(false);
         } else {
             // ADVANCED Mode: Use values from Frontend, set defaults if missing
             if (settings.getLayerHeight() == null) settings.setLayerHeight(0.20);
             if (settings.getInfillDensity() == null) settings.setInfillDensity(20.0);
             if (settings.getInfillPattern() == null) settings.setInfillPattern("grid");
+            if (settings.getNozzleDiameter() == null) settings.setNozzleDiameter(0.4);
+            if (settings.getSupportsEnabled() == null) settings.setSupportsEnabled(false);
         }
     }
 
@@ -336,6 +436,24 @@ public class QuoteSessionController {
         }
 
         Path path = Paths.get(item.getStoredPath());
+        // Since storedPath is absolute, we can't directly use loadAsResource with it unless we resolve relative.
+        // But loadAsResource expects relative path?
+        // Actually FileSystemStorageService.loadAsResource uses rootLocation.resolve(path).
+        // If path is absolute, resolve might fail or behave weirdly.
+        // But wait, we stored absolute path in DB: item.setStoredPath(persistentPath.toString());
+        // If we want to use storageService.loadAsResource, we need the relative path.
+        // Or we just access the file directly if we trust the absolute path.
+        // But we want to use StorageService abstraction.
+        
+        // Option 1: Reconstruct relative path.
+        // We know structure: quotes/{sessionId}/{filename}... 
+        // But filename is UUID+ext. We don't have storedFilename in QuoteLineItem easily?
+        // QuoteLineItem doesn't seem to have storedFilename field, only storedPath.
+        
+        // If we trust the file is on disk, we can use UrlResource directly here as before,
+        // relying on the fact that storedPath is the absolute path to the file.
+        // But we should verify it exists.
+        
         if (!Files.exists(path)) {
             return ResponseEntity.notFound().build();
         }

backend/src/main/java/com/printcalculator/dto/OrderDto.java

@@ -7,7 +7,6 @@ import java.util.UUID;
 
 public class OrderDto {
     private UUID id;
-    private String orderNumber;
     private String status;
     private String customerEmail;
     private String customerPhone;
@@ -28,9 +27,6 @@ public class OrderDto {
     public UUID getId() { return id; }
     public void setId(UUID id) { this.id = id; }
 
-    public String getOrderNumber() { return orderNumber; }
-    public void setOrderNumber(String orderNumber) { this.orderNumber = orderNumber; }
-
     public String getStatus() { return status; }
     public void setStatus(String status) { this.status = status; }
 

backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java

@@ -18,6 +18,7 @@ public class PrintSettingsDto {
     private Double layerHeight;
     private Double infillDensity;
     private String infillPattern;
-    private Boolean supportsEnabled;
+    private Boolean supportsEnabled = true;
+    private Double nozzleDiameter;
     private String notes;
 }

backend/src/main/java/com/printcalculator/entity/Order.java

@@ -138,16 +138,6 @@ public class Order {
         this.id = id;
     }
 
-    @Transient
-    public String getOrderNumber() {
-        if (id == null) {
-            return null;
-        }
-        String rawId = id.toString();
-        int dashIndex = rawId.indexOf('-');
-        return dashIndex > 0 ? rawId.substring(0, dashIndex) : rawId;
-    }
-
     public QuoteSession getSourceQuoteSession() {
         return sourceQuoteSession;
     }
@@ -420,4 +410,5 @@ public class Order {
         this.paidAt = paidAt;
     }
 
+
 }

backend/src/main/java/com/printcalculator/entity/OrderItem.java

@@ -67,16 +67,6 @@ public class OrderItem {
     @Column(name = "created_at", nullable = false)
     private OffsetDateTime createdAt;
 
-    @PrePersist
-    private void onCreate() {
-        if (createdAt == null) {
-            createdAt = OffsetDateTime.now();
-        }
-        if (quantity == null) {
-            quantity = 1;
-        }
-    }
-
     public UUID getId() {
         return id;
     }

backend/src/main/java/com/printcalculator/entity/PrinterMachine.java

@@ -41,6 +41,9 @@ public class PrinterMachine {
     @Column(name = "created_at", nullable = false)
     private OffsetDateTime createdAt;
 
+    @Column(name = "slicer_machine_profile")
+    private String slicerMachineProfile;
+
     public Long getId() {
         return id;
     }
@@ -57,6 +60,14 @@ public class PrinterMachine {
         this.printerDisplayName = printerDisplayName;
     }
 
+    public String getSlicerMachineProfile() {
+        return slicerMachineProfile;
+    }
+
+    public void setSlicerMachineProfile(String slicerMachineProfile) {
+        this.slicerMachineProfile = slicerMachineProfile;
+    }
+
     public Integer getBuildVolumeXMm() {
         return buildVolumeXMm;
     }

backend/src/main/java/com/printcalculator/event/OrderCreatedEvent.java

@@ -1,16 +0,0 @@
-package com.printcalculator.event;
-
-import com.printcalculator.entity.Order;
-import lombok.Getter;
-import org.springframework.context.ApplicationEvent;
-
-@Getter
-public class OrderCreatedEvent extends ApplicationEvent {
-
-    private final Order order;
-
-    public OrderCreatedEvent(Object source, Order order) {
-        super(source);
-        this.order = order;
-    }
-}

backend/src/main/java/com/printcalculator/event/listener/OrderEmailListener.java

@@ -1,97 +0,0 @@
-package com.printcalculator.event.listener;
-
-import com.printcalculator.entity.Order;
-import com.printcalculator.event.OrderCreatedEvent;
-import com.printcalculator.service.email.EmailNotificationService;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.event.EventListener;
-import org.springframework.scheduling.annotation.Async;
-import org.springframework.stereotype.Component;
-
-import java.time.format.DateTimeFormatter;
-import java.util.HashMap;
-import java.util.Map;
-
-@Slf4j
-@Component
-@RequiredArgsConstructor
-public class OrderEmailListener {
-
-    private final EmailNotificationService emailNotificationService;
-
-    @Value("${app.mail.admin.enabled:true}")
-    private boolean adminMailEnabled;
-
-    @Value("${app.mail.admin.address:}")
-    private String adminMailAddress;
-
-    @Value("${app.frontend.base-url:http://localhost:4200}")
-    private String frontendBaseUrl;
-
-    @Async
-    @EventListener
-    public void handleOrderCreatedEvent(OrderCreatedEvent event) {
-        Order order = event.getOrder();
-        log.info("Processing OrderCreatedEvent for order id: {}", order.getId());
-
-        try {
-            sendCustomerConfirmationEmail(order);
-            
-            if (adminMailEnabled && adminMailAddress != null && !adminMailAddress.isEmpty()) {
-                sendAdminNotificationEmail(order);
-            }
-        } catch (Exception e) {
-            log.error("Failed to process email notifications for order id: {}", order.getId(), e);
-        }
-    }
-
-    private void sendCustomerConfirmationEmail(Order order) {
-        Map<String, Object> templateData = new HashMap<>();
-        templateData.put("customerName", order.getCustomer().getFirstName());
-        templateData.put("orderId", order.getId());
-        templateData.put("orderNumber", getDisplayOrderNumber(order));
-        templateData.put("orderDetailsUrl", buildOrderDetailsUrl(order));
-        templateData.put("orderDate", order.getCreatedAt().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
-        templateData.put("totalCost", String.format("%.2f", order.getTotalChf()));
-
-        emailNotificationService.sendEmail(
-                order.getCustomer().getEmail(),
-                "Conferma Ordine #" + getDisplayOrderNumber(order) + " - 3D-Fab",
-                "order-confirmation",
-                templateData
-        );
-    }
-
-    private void sendAdminNotificationEmail(Order order) {
-        Map<String, Object> templateData = new HashMap<>();
-        templateData.put("customerName", order.getCustomer().getFirstName() + " " + order.getCustomer().getLastName());
-        templateData.put("orderId", order.getId());
-        templateData.put("orderNumber", getDisplayOrderNumber(order));
-        templateData.put("orderDetailsUrl", buildOrderDetailsUrl(order));
-        templateData.put("orderDate", order.getCreatedAt().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
-        templateData.put("totalCost", String.format("%.2f", order.getTotalChf()));
-        
-        // Possiamo riutilizzare lo stesso template per ora o crearne uno ad-hoc in futuro
-        emailNotificationService.sendEmail(
-                adminMailAddress,
-                "Nuovo Ordine Ricevuto #" + getDisplayOrderNumber(order) + " - " + order.getCustomer().getLastName(),
-                "order-confirmation", 
-                templateData
-        );
-    }
-
-    private String getDisplayOrderNumber(Order order) {
-        String orderNumber = order.getOrderNumber();
-        if (orderNumber != null && !orderNumber.isBlank()) {
-            return orderNumber;
-        }
-        return order.getId() != null ? order.getId().toString() : "unknown";
-    }
-
-    private String buildOrderDetailsUrl(Order order) {
-        String baseUrl = frontendBaseUrl == null ? "" : frontendBaseUrl.replaceAll("/+$", "");
-        return baseUrl + "/ordine/" + order.getId();
-    }
-}

backend/src/main/java/com/printcalculator/exception/GlobalExceptionHandler.java

@@ -1,27 +1,71 @@
 package com.printcalculator.exception;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
-import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
 
-import java.time.LocalDateTime;
-import java.util.LinkedHashMap;
+import java.util.HashMap;
 import java.util.Map;
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 
 @ControllerAdvice
+@Slf4j
 public class GlobalExceptionHandler {
 
-    @ExceptionHandler(VirusDetectedException.class)
-    public ResponseEntity<Object> handleVirusDetectedException(
-            VirusDetectedException ex, WebRequest request) {
+    @ExceptionHandler(StorageException.class)
+    public ResponseEntity<?> handleStorageException(StorageException exc) {
+        // Log the full exception for internal debugging
+        log.error("Storage Exception occurred", exc);
         
-        Map<String, Object> body = new LinkedHashMap<>();
-        body.put("timestamp", LocalDateTime.now());
-        body.put("message", ex.getMessage());
-        body.put("error", "Virus Detected");
+        Map<String, String> response = new HashMap<>();
 
-        return new ResponseEntity<>(body, HttpStatus.BAD_REQUEST);
+        // Check for specific virus case
+        if (exc.getMessage() != null && exc.getMessage().contains("antivirus scanner")) {
+             response.put("error", "Security Violation");
+             // Safe message for client
+             response.put("message", "File rejected by security policy.");
+             response.put("code", "VIRUS_DETECTED");
+             return ResponseEntity.status(HttpStatus.UNPROCESSABLE_ENTITY).body(response);
+        }
+
+        // Generic fallback for other storage errors to avoid leaking internal paths/details
+        response.put("error", "Storage Operation Failed");
+        response.put("message", "Unable to process the file upload.");
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(response);
+    }
+
+    @ExceptionHandler(MaxUploadSizeExceededException.class)
+    public ResponseEntity<?> handleMaxSizeException(MaxUploadSizeExceededException exc) {
+        Map<String, String> response = new HashMap<>();
+        response.put("error", "File too large");
+        response.put("message", "The uploaded file exceeds the maximum allowed size.");
+        return ResponseEntity.status(HttpStatus.PAYLOAD_TOO_LARGE).body(response);
+    }
+
+    @ExceptionHandler(ModelTooLargeException.class)
+    public ResponseEntity<?> handleModelTooLarge(ModelTooLargeException exc) {
+        Map<String, String> response = new HashMap<>();
+        response.put("error", "Model too large");
+        response.put("code", "MODEL_TOO_LARGE");
+        response.put("message", String.format(
+                "Model size %.2fx%.2fx%.2f mm exceeds build volume %dx%dx%d mm.",
+                exc.getModelX(), exc.getModelY(), exc.getModelZ(),
+                exc.getBuildX(), exc.getBuildY(), exc.getBuildZ()
+        ));
+        response.put("model_x_mm", formatMm(exc.getModelX()));
+        response.put("model_y_mm", formatMm(exc.getModelY()));
+        response.put("model_z_mm", formatMm(exc.getModelZ()));
+        response.put("build_x_mm", String.valueOf(exc.getBuildX()));
+        response.put("build_y_mm", String.valueOf(exc.getBuildY()));
+        response.put("build_z_mm", String.valueOf(exc.getBuildZ()));
+        return ResponseEntity.unprocessableEntity().body(response);
+    }
+
+    private String formatMm(double value) {
+        return BigDecimal.valueOf(value).setScale(2, RoundingMode.HALF_UP).toPlainString();
     }
 }

backend/src/main/java/com/printcalculator/exception/ModelTooLargeException.java

@@ -0,0 +1,45 @@
+package com.printcalculator.exception;
+
+public class ModelTooLargeException extends RuntimeException {
+    private final double modelX;
+    private final double modelY;
+    private final double modelZ;
+    private final int buildX;
+    private final int buildY;
+    private final int buildZ;
+
+    public ModelTooLargeException(double modelX, double modelY, double modelZ,
+                                  int buildX, int buildY, int buildZ) {
+        super("Model size exceeds build volume");
+        this.modelX = modelX;
+        this.modelY = modelY;
+        this.modelZ = modelZ;
+        this.buildX = buildX;
+        this.buildY = buildY;
+        this.buildZ = buildZ;
+    }
+
+    public double getModelX() {
+        return modelX;
+    }
+
+    public double getModelY() {
+        return modelY;
+    }
+
+    public double getModelZ() {
+        return modelZ;
+    }
+
+    public int getBuildX() {
+        return buildX;
+    }
+
+    public int getBuildY() {
+        return buildY;
+    }
+
+    public int getBuildZ() {
+        return buildZ;
+    }
+}

backend/src/main/java/com/printcalculator/exception/VirusDetectedException.java

@@ -1,7 +0,0 @@
-package com.printcalculator.exception;
-
-public class VirusDetectedException extends RuntimeException {
-    public VirusDetectedException(String message) {
-        super(message);
-    }
-}

backend/src/main/java/com/printcalculator/model/PrintStats.java

@@ -1,8 +1,29 @@
 package com.printcalculator.model;
 
-public record PrintStats(
-    long printTimeSeconds,
-    String printTimeFormatted,
-    double filamentWeightGrams,
-    double filamentLengthMm
-) {}
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class PrintStats {
+    private long printTimeSeconds;
+    private String printTimeFormatted;
+    private double filamentWeightGrams;
+    private double filamentLengthMm;
+    
+    // Breakdown if available
+    private Double modelWeightGrams;
+    private Double supportWeightGrams;
+
+    // Legacy constructor for compatibility
+    public PrintStats(long printTimeSeconds, String printTimeFormatted, double filamentWeightGrams, double filamentLengthMm) {
+        this.printTimeSeconds = printTimeSeconds;
+        this.printTimeFormatted = printTimeFormatted;
+        this.filamentWeightGrams = filamentWeightGrams;
+        this.filamentLengthMm = filamentLengthMm;
+    }
+}

backend/src/main/java/com/printcalculator/model/StlBounds.java

@@ -0,0 +1,16 @@
+package com.printcalculator.model;
+
+public record StlBounds(double minX, double minY, double minZ,
+                        double maxX, double maxY, double maxZ) {
+    public double sizeX() {
+        return maxX - minX;
+    }
+
+    public double sizeY() {
+        return maxY - minY;
+    }
+
+    public double sizeZ() {
+        return maxZ - minZ;
+    }
+}

backend/src/main/java/com/printcalculator/model/StlShiftResult.java

@@ -0,0 +1,10 @@
+package com.printcalculator.model;
+
+import java.nio.file.Path;
+
+public record StlShiftResult(Path shiftedPath,
+                             double offsetX,
+                             double offsetY,
+                             double offsetZ,
+                             boolean shifted) {
+}

backend/src/main/java/com/printcalculator/service/ClamAVService.java

@@ -1,6 +1,5 @@
 package com.printcalculator.service;
 
-import com.printcalculator.exception.VirusDetectedException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
@@ -23,15 +22,18 @@ public class ClamAVService {
     public ClamAVService(
             @Value("${clamav.host:clamav}") String host,
             @Value("${clamav.port:3310}") int port,
-            @Value("${clamav.enabled:true}") boolean enabled
+            @Value("${clamav.enabled:false}") boolean enabled
     ) {
         this.enabled = enabled;
+        if (!enabled) {
+            logger.info("ClamAV is DISABLED");
+            this.clamavClient = null;
+            return;
+        }
+        logger.info("Initializing ClamAV client at {}:{}", host, port);
         ClamavClient client = null;
         try {
-            if (enabled) {
-                logger.info("Initializing ClamAV client at {}:{}", host, port);
-                client = new ClamavClient(host, port);
-            }
+            client = new ClamavClient(host, port);
         } catch (Exception e) {
             logger.error("Failed to initialize ClamAV client: " + e.getMessage());
         }
@@ -49,13 +51,11 @@ public class ClamAVService {
             } else if (result instanceof ScanResult.VirusFound) {
                 Map<String, Collection<String>> viruses = ((ScanResult.VirusFound) result).getFoundViruses();
                 logger.warn("VIRUS DETECTED: {}", viruses);
-                throw new VirusDetectedException("Virus detected in the uploaded file: " + viruses);
+                return false;
             } else {
                 logger.warn("Unknown scan result: {}. Allowing file (FAIL-OPEN)", result);
                 return true;
             }
-        } catch (VirusDetectedException e) {
-            throw e;
         } catch (Exception e) {
             logger.error("Error scanning file with ClamAV. Allowing file (FAIL-OPEN)", e);
             return true;

backend/src/main/java/com/printcalculator/service/GCodeParser.java

@@ -26,13 +26,15 @@ public class GCodeParser {
     private static final Pattern TIME_PATTERN = Pattern.compile(
             ";\\s*(?:estimated\\s+printing\\s+time|estimated\\s+print\\s+time|print\\s+time).*?[:=]\\s*(.*)",
             Pattern.CASE_INSENSITIVE);
-    private static final Pattern FILAMENT_G_PATTERN = Pattern.compile(";\\s*filament used \\[g\\]\\s*=\\s*(.*)");
+    private static final Pattern FILAMENT_G_PATTERN = Pattern.compile(";\\s*filament used \\[g\\]\\s*=\\s*([^;\\(\\n\\r]+)(?:\\s*\\(([^,]+) model,\\s*([^ ]+) support\\))?");
     private static final Pattern FILAMENT_MM_PATTERN = Pattern.compile(";\\s*filament used \\[mm\\]\\s*=\\s*(.*)");
 
     public PrintStats parse(File gcodeFile) throws IOException {
         long seconds = 0;
         double weightG = 0;
         double lengthMm = 0;
+        Double modelWeightG = null;
+        Double supportWeightG = null;
         String timeFormatted = "";
 
         try (BufferedReader reader = new BufferedReader(new FileReader(gcodeFile))) {
@@ -78,7 +80,14 @@ public class GCodeParser {
                 if (weightMatcher.find()) {
                     try {
                         weightG = Double.parseDouble(weightMatcher.group(1).trim());
-                         System.out.println("GCodeParser: Found weight: " + weightG + "g");
+                        System.out.println("GCodeParser: Found total weight: " + weightG + "g");
+                        
+                        // Check if we have groups 2 and 3 for breakdown
+                        if (weightMatcher.groupCount() >= 3 && weightMatcher.group(2) != null) {
+                            modelWeightG = Double.parseDouble(weightMatcher.group(2).trim());
+                            supportWeightG = Double.parseDouble(weightMatcher.group(3).trim());
+                            System.out.println("GCodeParser: Found breakdown - Model: " + modelWeightG + "g, Support: " + supportWeightG + "g");
+                        }
                     } catch (NumberFormatException ignored) {}
                 }
                 
@@ -92,7 +101,14 @@ public class GCodeParser {
             }
         }
         
-        return new PrintStats(seconds, timeFormatted, weightG, lengthMm);
+        return PrintStats.builder()
+                .printTimeSeconds(seconds)
+                .printTimeFormatted(timeFormatted)
+                .filamentWeightGrams(weightG)
+                .filamentLengthMm(lengthMm)
+                .modelWeightGrams(modelWeightG)
+                .supportWeightGrams(supportWeightG)
+                .build();
     }
 
     private long parseTimeString(String timeStr) {

backend/src/main/java/com/printcalculator/service/OrderService.java

@@ -8,10 +8,9 @@ import com.printcalculator.repository.OrderItemRepository;
 import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
-import com.printcalculator.event.OrderCreatedEvent;
-import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
 import java.math.BigDecimal;
@@ -35,7 +34,6 @@ public class OrderService {
     private final StorageService storageService;
     private final InvoicePdfRenderingService invoiceService;
     private final QrBillService qrBillService;
-    private final ApplicationEventPublisher eventPublisher;
 
     public OrderService(OrderRepository orderRepo,
                         OrderItemRepository orderItemRepo,
@@ -44,8 +42,7 @@ public class OrderService {
                         CustomerRepository customerRepo,
                         StorageService storageService,
                         InvoicePdfRenderingService invoiceService,
-                        QrBillService qrBillService,
-                        ApplicationEventPublisher eventPublisher) {
+                        QrBillService qrBillService) {
         this.orderRepo = orderRepo;
         this.orderItemRepo = orderItemRepo;
         this.quoteSessionRepo = quoteSessionRepo;
@@ -54,7 +51,6 @@ public class OrderService {
         this.storageService = storageService;
         this.invoiceService = invoiceService;
         this.qrBillService = qrBillService;
-        this.eventPublisher = eventPublisher;
     }
 
     @Transactional
@@ -199,11 +195,7 @@ public class OrderService {
         // Generate Invoice and QR Bill
         generateAndSaveDocuments(order, savedItems);
 
-        Order savedOrder = orderRepo.save(order);
-        
-        eventPublisher.publishEvent(new OrderCreatedEvent(this, savedOrder));
-
-        return savedOrder;
+        return orderRepo.save(order);
     }
     
     private void generateAndSaveDocuments(Order order, List<OrderItem> items) {
@@ -231,7 +223,7 @@ public class OrderService {
             vars.put("sellerAddressLine2", "Sede Bienne, Svizzera");
             vars.put("sellerEmail", "info@3dfab.ch");
 
-            vars.put("invoiceNumber", "INV-" + getDisplayOrderNumber(order).toUpperCase());
+            vars.put("invoiceNumber", "INV-" + order.getId().toString().substring(0, 8).toUpperCase());
             vars.put("invoiceDate", order.getCreatedAt().format(DateTimeFormatter.ISO_LOCAL_DATE));
             vars.put("dueDate", order.getCreatedAt().plusDays(7).format(DateTimeFormatter.ISO_LOCAL_DATE));
 
@@ -305,12 +297,4 @@ public class OrderService {
         }
         return "stl";
     }
-
-    private String getDisplayOrderNumber(Order order) {
-        String orderNumber = order.getOrderNumber();
-        if (orderNumber != null && !orderNumber.isBlank()) {
-            return orderNumber;
-        }
-        return order.getId() != null ? order.getId().toString() : "unknown";
-    }
 }

backend/src/main/java/com/printcalculator/service/ProfileManager.java

@@ -16,7 +16,7 @@ import java.util.logging.Logger;
 import java.util.stream.Stream;
 import java.util.Map;
 import java.util.HashMap;
-import java.util.List;
+import java.math.BigDecimal;
 
 @Service
 public class ProfileManager {
@@ -57,38 +57,34 @@ public class ProfileManager {
         if (profilePath == null) {
             throw new IOException("Profile not found: " + profileName);
         }
-        logger.info("Resolved " + type + " profile '" + profileName + "' -> " + profilePath);
         return resolveInheritance(profilePath);
     }
 
+    public String resolveMachineProfileName(String machineName, Double nozzleDiameter) {
+        String resolvedName = profileAliases.getOrDefault(machineName, machineName);
+        if (nozzleDiameter == null) return resolvedName;
+
+        String base = resolvedName.replaceAll("\\s*\\d+(?:\\.\\d+)?\\s*nozzle$", "").trim();
+        String formatted = BigDecimal.valueOf(nozzleDiameter).stripTrailingZeros().toPlainString();
+        String candidate = base + " " + formatted + " nozzle";
+
+        Path exists = findProfileFile(candidate, "machine");
+        return exists != null ? candidate : resolvedName;
+    }
+
     private Path findProfileFile(String name, String type) {
         // Check aliases first
         String resolvedName = profileAliases.getOrDefault(name, name);
         
-        // Look for name.json under the expected type directory first to avoid
-        // collisions across vendors/profile families with same filename.
-        String filename = toJsonFilename(resolvedName);
+        // Simple search: look for name.json in the profiles_root recursively
+        // Type could be "machine", "process", "filament" to narrow down, but for now global search
+        String filename = resolvedName.endsWith(".json") ? resolvedName : resolvedName + ".json";
         
         try (Stream<Path> stream = Files.walk(Paths.get(profilesRoot))) {
-            List<Path> candidates = stream
+            Optional<Path> found = stream
                     .filter(p -> p.getFileName().toString().equals(filename))
-                    .sorted()
-                    .toList();
-
-            if (candidates.isEmpty()) {
-                return null;
-            }
-
-            if (type != null && !type.isBlank() && !"any".equalsIgnoreCase(type)) {
-                Optional<Path> typed = candidates.stream()
-                        .filter(p -> pathContainsSegment(p, type))
-                        .findFirst();
-                if (typed.isPresent()) {
-                    return typed.get();
-                }
-            }
-
-            return candidates.get(0);
+                    .findFirst();
+            return found.orElse(null);
         } catch (IOException e) {
             logger.severe("Error searching for profile: " + e.getMessage());
             return null;
@@ -102,20 +98,14 @@ public class ProfileManager {
         // 2. Check inherits
         if (currentNode.has("inherits")) {
             String parentName = currentNode.get("inherits").asText();
-            // Try local directory first with explicit .json filename.
-            String parentFilename = toJsonFilename(parentName);
-            Path parentPath = currentPath.getParent().resolve(parentFilename);
+            // Try to find parent in same directory or standard search
+            Path parentPath = currentPath.getParent().resolve(parentName);
             if (!Files.exists(parentPath)) {
-                // Fallback to the same profile type directory before global.
-                String inferredType = inferTypeFromPath(currentPath);
-                parentPath = findProfileFile(parentName, inferredType);
-            }
-            if (parentPath == null || !Files.exists(parentPath)) {
+                // If not in same dir, search globally
                 parentPath = findProfileFile(parentName, "any");
             }
 
             if (parentPath != null && Files.exists(parentPath)) {
-                logger.info("Resolved inherits '" + parentName + "' for " + currentPath + " -> " + parentPath);
                 // Recursive call
                 ObjectNode parentNode = resolveInheritance(parentPath);
                 // Merge current into parent (child overrides parent)
@@ -146,30 +136,4 @@ public class ProfileManager {
             mainNode.set(fieldName, jsonNode);
         }
     }
-
-    private String toJsonFilename(String name) {
-        return name.endsWith(".json") ? name : name + ".json";
-    }
-
-    private boolean pathContainsSegment(Path path, String segment) {
-        String normalized = path.toString().replace('\\', '/');
-        String needle = "/" + segment + "/";
-        return normalized.contains(needle);
-    }
-
-    private String inferTypeFromPath(Path path) {
-        if (path == null) {
-            return "any";
-        }
-        if (pathContainsSegment(path, "machine")) {
-            return "machine";
-        }
-        if (pathContainsSegment(path, "process")) {
-            return "process";
-        }
-        if (pathContainsSegment(path, "filament")) {
-            return "filament";
-        }
-        return "any";
-    }
 }

backend/src/main/java/com/printcalculator/service/QrBillService.java

@@ -51,8 +51,7 @@ public class QrBillService {
 
         // Reference
         // bill.setReference(QRBill.createCreditorReference("...")); // If using QRR
-        String orderRef = order.getOrderNumber() != null ? order.getOrderNumber() : order.getId().toString();
-        bill.setUnstructuredMessage("Order " + orderRef);
+        bill.setUnstructuredMessage("Order " + order.getId());
 
         return bill;
     }

backend/src/main/java/com/printcalculator/service/QuoteCalculator.java

@@ -76,11 +76,21 @@ public class QuoteCalculator {
         // --- CALCULATIONS ---
 
         // Material Cost: (weight / 1000) * costPerKg
-        BigDecimal weightKg = BigDecimal.valueOf(stats.filamentWeightGrams()).divide(BigDecimal.valueOf(1000), 4, RoundingMode.HALF_UP);
+        // DISCOUNTED Support material to avoid penalizing users for default supports
+        BigDecimal weightToCharge;
+        if (stats.getModelWeightGrams() != null && stats.getSupportWeightGrams() != null) {
+            // Charge 100% for model + 20% for support
+            weightToCharge = BigDecimal.valueOf(stats.getModelWeightGrams())
+                    .add(BigDecimal.valueOf(stats.getSupportWeightGrams()).multiply(BigDecimal.valueOf(0.2)));
+        } else {
+            weightToCharge = BigDecimal.valueOf(stats.getFilamentWeightGrams());
+        }
+
+        BigDecimal weightKg = weightToCharge.divide(BigDecimal.valueOf(1000), 4, RoundingMode.HALF_UP);
         BigDecimal materialCost = weightKg.multiply(variant.getCostChfPerKg());
 
         // Machine Cost: Tiered
-        BigDecimal totalHours = BigDecimal.valueOf(stats.printTimeSeconds()).divide(BigDecimal.valueOf(3600), 4, RoundingMode.HALF_UP);
+        BigDecimal totalHours = BigDecimal.valueOf(stats.getPrintTimeSeconds()).divide(BigDecimal.valueOf(3600), 4, RoundingMode.HALF_UP);
         BigDecimal machineCost = calculateMachineCost(policy, totalHours);
 
         // Energy Cost: (watts / 1000) * hours * costPerKwh

backend/src/main/java/com/printcalculator/service/SlicerService.java

@@ -10,13 +10,13 @@ import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
-import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Logger;
+import java.util.stream.Stream;
 
 @Service
 public class SlicerService {
@@ -41,27 +41,15 @@ public class SlicerService {
 
     public PrintStats slice(File inputStl, String machineName, String filamentName, String processName,
                             Map<String, String> machineOverrides, Map<String, String> processOverrides) throws IOException {
-        // 1. Prepare Profiles
         ObjectNode machineProfile = profileManager.getMergedProfile(machineName, "machine");
         ObjectNode filamentProfile = profileManager.getMergedProfile(filamentName, "filament");
         ObjectNode processProfile = profileManager.getMergedProfile(processName, "process");
 
-        logger.info("Slicer profiles: machine='" + machineName + "', filament='" + filamentName + "', process='" + processName + "'");
-        logger.info("Machine limits: printable_area=" + machineProfile.path("printable_area")
-                + ", printable_height=" + machineProfile.path("printable_height")
-                + ", bed_exclude_area=" + machineProfile.path("bed_exclude_area")
-                + ", head_wrap_detect_zone=" + machineProfile.path("head_wrap_detect_zone"));
+        if (machineOverrides != null) machineOverrides.forEach(machineProfile::put);
+        if (processOverrides != null) processOverrides.forEach(processProfile::put);
 
-        // Apply Overrides
-        if (machineOverrides != null) {
-            machineOverrides.forEach(machineProfile::put);
-        }
-        if (processOverrides != null) {
-            processOverrides.forEach(processProfile::put);
-        }
-
-        // 2. Create Temp Dir
         Path tempDir = Files.createTempDirectory("slicer_job_");
+        
         try {
             File mFile = tempDir.resolve("machine.json").toFile();
             File fFile = tempDir.resolve("filament.json").toFile();
@@ -71,110 +59,61 @@ public class SlicerService {
             mapper.writeValue(fFile, filamentProfile);
             mapper.writeValue(pFile, processProfile);
 
-            String basename = inputStl.getName();
-            if (basename.toLowerCase().endsWith(".stl")) {
-                basename = basename.substring(0, basename.length() - 4);
+            List<String> command = new ArrayList<>();
+            command.add(slicerPath); 
+            
+            command.add("--load-settings");
+            command.add(mFile.getAbsolutePath());
+            command.add("--load-settings");
+            command.add(pFile.getAbsolutePath());
+            command.add("--load-filaments");
+            command.add(fFile.getAbsolutePath());
+            
+            command.add("--ensure-on-bed");
+            command.add("--arrange");
+            command.add("1");
+            command.add("--outputdir");
+            command.add(tempDir.toAbsolutePath().toString());
+            
+            command.add("--slice");
+            command.add("0");
+
+            command.add(inputStl.getAbsolutePath());
+
+            logger.info("Executing Slicer: " + String.join(" ", command));
+
+            runSlicerCommand(command, tempDir);
+
+            try (Stream<Path> s = Files.list(tempDir)) {
+                Optional<Path> found = s.filter(p -> p.toString().endsWith(".gcode")).findFirst();
+                if (found.isPresent()) return gCodeParser.parse(found.get().toFile());
+                else throw new IOException("No GCode found in " + tempDir);
             }
-            Path slicerLogPath = tempDir.resolve("orcaslicer.log");
-
-            // 3. Run slicer. Retry with arrange only for out-of-volume style failures.
-            for (boolean useArrange : new boolean[]{false, true}) {
-                List<String> command = new ArrayList<>();
-                command.add(slicerPath);
-                command.add("--load-settings");
-                command.add(mFile.getAbsolutePath());
-                command.add("--load-settings");
-                command.add(pFile.getAbsolutePath());
-                command.add("--load-filaments");
-                command.add(fFile.getAbsolutePath());
-                command.add("--ensure-on-bed");
-                if (useArrange) {
-                    command.add("--arrange");
-                    command.add("1");
-                }
-                command.add("--slice");
-                command.add("0");
-                command.add("--outputdir");
-                command.add(tempDir.toAbsolutePath().toString());
-                command.add(inputStl.getAbsolutePath());
-
-                logger.info("Executing Slicer" + (useArrange ? " (retry with arrange)" : "") + ": " + String.join(" ", command));
-
-                Files.deleteIfExists(slicerLogPath);
-                ProcessBuilder pb = new ProcessBuilder(command);
-                pb.directory(tempDir.toFile());
-                pb.redirectErrorStream(true);
-                pb.redirectOutput(slicerLogPath.toFile());
-
-                Process process = pb.start();
-                boolean finished = process.waitFor(5, TimeUnit.MINUTES);
-
-                if (!finished) {
-                    process.destroyForcibly();
-                    throw new IOException("Slicer timed out");
-                }
-
-                if (process.exitValue() != 0) {
-                    String error = "";
-                    if (Files.exists(slicerLogPath)) {
-                        error = Files.readString(slicerLogPath, StandardCharsets.UTF_8);
-                    }
-                    if (!useArrange && isOutOfVolumeError(error)) {
-                        logger.warning("Slicer reported model out of printable area, retrying with arrange.");
-                        continue;
-                    }
-                    throw new IOException("Slicer failed with exit code " + process.exitValue() + ": " + error);
-                }
-
-                File gcodeFile = tempDir.resolve(basename + ".gcode").toFile();
-                if (!gcodeFile.exists()) {
-                    File alt = tempDir.resolve("plate_1.gcode").toFile();
-                    if (alt.exists()) {
-                        gcodeFile = alt;
-                    } else {
-                        throw new IOException("GCode output not found in " + tempDir);
-                    }
-                }
-
-                return gCodeParser.parse(gcodeFile);
-            }
-
-            throw new IOException("Slicer failed after retry");
 
         } catch (InterruptedException e) {
             Thread.currentThread().interrupt();
-            throw new IOException("Interrupted during slicing", e);
-        } finally {
-            deleteRecursively(tempDir);
+            throw new IOException(e);
         }
     }
 
-    private void deleteRecursively(Path path) {
-        if (path == null || !Files.exists(path)) {
-            return;
+    protected void runSlicerCommand(List<String> command, Path tempDir) throws IOException, InterruptedException {
+        ProcessBuilder pb = new ProcessBuilder(command);
+        pb.directory(tempDir.toFile());
+        
+        Map<String, String> env = pb.environment();
+        env.put("HOME", "/tmp");
+        env.put("QT_QPA_PLATFORM", "offscreen");
+        
+        Process process = pb.start();
+        if (!process.waitFor(5, TimeUnit.MINUTES)) {
+            process.destroy();
+            throw new IOException("Slicer timeout");
         }
 
-        try (var walk = Files.walk(path)) {
-            walk.sorted(Comparator.reverseOrder()).forEach(p -> {
-                try {
-                    Files.deleteIfExists(p);
-                } catch (IOException e) {
-                    logger.warning("Failed to delete temp path " + p + ": " + e.getMessage());
-                }
-            });
-        } catch (IOException e) {
-            logger.warning("Failed to walk temp directory " + path + ": " + e.getMessage());
+        if (process.exitValue() != 0) {
+            String out = new String(process.getInputStream().readAllBytes());
+            String err = new String(process.getErrorStream().readAllBytes());
+            throw new IOException("Slicer failed with exit code " + process.exitValue() + "\nERR: " + err + "\nOUT: " + out);
         }
     }
-
-    private boolean isOutOfVolumeError(String errorLog) {
-        if (errorLog == null || errorLog.isBlank()) {
-            return false;
-        }
-
-        String normalized = errorLog.toLowerCase();
-        return normalized.contains("nothing to be sliced")
-                || normalized.contains("no object is fully inside the print volume")
-                || normalized.contains("calc_exclude_triangles");
-    }
 }

backend/src/main/java/com/printcalculator/service/StlService.java

@@ -0,0 +1,255 @@
+package com.printcalculator.service;
+
+import com.printcalculator.model.StlBounds;
+import com.printcalculator.model.StlShiftResult;
+import org.springframework.stereotype.Service;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.RandomAccessFile;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Locale;
+
+@Service
+public class StlService {
+
+    public StlBounds readBounds(File stlFile) throws IOException {
+        long size = stlFile.length();
+        if (size >= 84 && isBinaryStl(stlFile, size)) {
+            return readBinaryBounds(stlFile);
+        }
+        return readAsciiBounds(stlFile);
+    }
+
+    public StlShiftResult shiftToFitIfNeeded(File stlFile, StlBounds bounds,
+                                             int bedX, int bedY, int bedZ) throws IOException {
+        double sizeX = bounds.sizeX();
+        double sizeY = bounds.sizeY();
+        double sizeZ = bounds.sizeZ();
+
+        double targetMinX = (bedX - sizeX) / 2.0;
+        double targetMinY = (bedY - sizeY) / 2.0;
+        double targetMinZ = 0.0;
+
+        double offsetX = targetMinX - bounds.minX();
+        double offsetY = targetMinY - bounds.minY();
+        double offsetZ = targetMinZ - bounds.minZ();
+
+        boolean needsShift = Math.abs(offsetX) > 1e-6 || Math.abs(offsetY) > 1e-6 || Math.abs(offsetZ) > 1e-6;
+        if (!needsShift) {
+            return new StlShiftResult(null, offsetX, offsetY, offsetZ, false);
+        }
+
+        Path shiftedPath = Files.createTempFile("stl_shifted_", ".stl");
+        writeShifted(stlFile, shiftedPath.toFile(), offsetX, offsetY, offsetZ);
+        return new StlShiftResult(shiftedPath, offsetX, offsetY, offsetZ, true);
+    }
+
+    private boolean isBinaryStl(File stlFile, long size) throws IOException {
+        try (RandomAccessFile raf = new RandomAccessFile(stlFile, "r")) {
+            raf.seek(80);
+            long triangleCount = readLEUInt32(raf);
+            long expected = 84L + triangleCount * 50L;
+            return expected == size;
+        }
+    }
+
+    private StlBounds readBinaryBounds(File stlFile) throws IOException {
+        try (RandomAccessFile raf = new RandomAccessFile(stlFile, "r")) {
+            raf.seek(80);
+            long triangleCount = readLEUInt32(raf);
+            raf.seek(84);
+
+            BoundsAccumulator acc = new BoundsAccumulator();
+            for (long i = 0; i < triangleCount; i++) {
+                // skip normal
+                readLEFloat(raf);
+                readLEFloat(raf);
+                readLEFloat(raf);
+                // 3 vertices
+                acc.accept(readLEFloat(raf), readLEFloat(raf), readLEFloat(raf));
+                acc.accept(readLEFloat(raf), readLEFloat(raf), readLEFloat(raf));
+                acc.accept(readLEFloat(raf), readLEFloat(raf), readLEFloat(raf));
+                // skip attribute byte count
+                raf.skipBytes(2);
+            }
+            return acc.toBounds();
+        }
+    }
+
+    private StlBounds readAsciiBounds(File stlFile) throws IOException {
+        BoundsAccumulator acc = new BoundsAccumulator();
+        try (BufferedReader reader = Files.newBufferedReader(stlFile.toPath(), StandardCharsets.US_ASCII)) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                line = line.trim();
+                if (!line.startsWith("vertex")) continue;
+                String[] parts = line.split("\\s+");
+                if (parts.length < 4) continue;
+                double x = Double.parseDouble(parts[1]);
+                double y = Double.parseDouble(parts[2]);
+                double z = Double.parseDouble(parts[3]);
+                acc.accept(x, y, z);
+            }
+        }
+        return acc.toBounds();
+    }
+
+    private void writeShifted(File input, File output, double offsetX, double offsetY, double offsetZ) throws IOException {
+        long size = input.length();
+        if (size >= 84 && isBinaryStl(input, size)) {
+            writeShiftedBinary(input, output, offsetX, offsetY, offsetZ);
+        } else {
+            writeShiftedAscii(input, output, offsetX, offsetY, offsetZ);
+        }
+    }
+
+    private void writeShiftedAscii(File input, File output, double offsetX, double offsetY, double offsetZ) throws IOException {
+        try (BufferedReader reader = Files.newBufferedReader(input.toPath(), StandardCharsets.US_ASCII);
+             BufferedWriter writer = Files.newBufferedWriter(output.toPath(), StandardCharsets.US_ASCII)) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                String trimmed = line.trim();
+                if (!trimmed.startsWith("vertex")) {
+                    writer.write(line);
+                    writer.newLine();
+                    continue;
+                }
+                String[] parts = trimmed.split("\\s+");
+                if (parts.length < 4) {
+                    writer.write(line);
+                    writer.newLine();
+                    continue;
+                }
+                double x = Double.parseDouble(parts[1]) + offsetX;
+                double y = Double.parseDouble(parts[2]) + offsetY;
+                double z = Double.parseDouble(parts[3]) + offsetZ;
+                int idx = line.indexOf("vertex");
+                String indent = idx > 0 ? line.substring(0, idx) : "";
+                writer.write(indent + String.format(Locale.US, "vertex %.6f %.6f %.6f", x, y, z));
+                writer.newLine();
+            }
+        }
+    }
+
+    private void writeShiftedBinary(File input, File output, double offsetX, double offsetY, double offsetZ) throws IOException {
+        try (RandomAccessFile raf = new RandomAccessFile(input, "r");
+             OutputStream out = new FileOutputStream(output)) {
+            byte[] header = new byte[80];
+            raf.readFully(header);
+            out.write(header);
+
+            long triangleCount = readLEUInt32(raf);
+            writeLEUInt32(out, triangleCount);
+
+            for (long i = 0; i < triangleCount; i++) {
+                // normal
+                writeLEFloat(out, readLEFloat(raf));
+                writeLEFloat(out, readLEFloat(raf));
+                writeLEFloat(out, readLEFloat(raf));
+
+                // vertices
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetX));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetY));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetZ));
+
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetX));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetY));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetZ));
+
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetX));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetY));
+                writeLEFloat(out, (float) (readLEFloat(raf) + offsetZ));
+
+                // attribute byte count
+                int b1 = raf.read();
+                int b2 = raf.read();
+                if ((b1 | b2) < 0) throw new IOException("Unexpected EOF while reading STL");
+                out.write(b1);
+                out.write(b2);
+            }
+        }
+    }
+
+    private long readLEUInt32(RandomAccessFile raf) throws IOException {
+        int b1 = raf.read();
+        int b2 = raf.read();
+        int b3 = raf.read();
+        int b4 = raf.read();
+        if ((b1 | b2 | b3 | b4) < 0) throw new IOException("Unexpected EOF while reading STL");
+        return ((long) b1 & 0xFF)
+                | (((long) b2 & 0xFF) << 8)
+                | (((long) b3 & 0xFF) << 16)
+                | (((long) b4 & 0xFF) << 24);
+    }
+
+    private int readLEInt(RandomAccessFile raf) throws IOException {
+        int b1 = raf.read();
+        int b2 = raf.read();
+        int b3 = raf.read();
+        int b4 = raf.read();
+        if ((b1 | b2 | b3 | b4) < 0) throw new IOException("Unexpected EOF while reading STL");
+        return (b1 & 0xFF)
+                | ((b2 & 0xFF) << 8)
+                | ((b3 & 0xFF) << 16)
+                | ((b4 & 0xFF) << 24);
+    }
+
+    private float readLEFloat(RandomAccessFile raf) throws IOException {
+        return Float.intBitsToFloat(readLEInt(raf));
+    }
+
+    private void writeLEUInt32(OutputStream out, long value) throws IOException {
+        out.write((int) (value & 0xFF));
+        out.write((int) ((value >> 8) & 0xFF));
+        out.write((int) ((value >> 16) & 0xFF));
+        out.write((int) ((value >> 24) & 0xFF));
+    }
+
+    private void writeLEFloat(OutputStream out, float value) throws IOException {
+        int bits = Float.floatToIntBits(value);
+        out.write(bits & 0xFF);
+        out.write((bits >> 8) & 0xFF);
+        out.write((bits >> 16) & 0xFF);
+        out.write((bits >> 24) & 0xFF);
+    }
+
+    private static class BoundsAccumulator {
+        private boolean hasPoint = false;
+        private double minX;
+        private double minY;
+        private double minZ;
+        private double maxX;
+        private double maxY;
+        private double maxZ;
+
+        void accept(double x, double y, double z) {
+            if (!hasPoint) {
+                minX = maxX = x;
+                minY = maxY = y;
+                minZ = maxZ = z;
+                hasPoint = true;
+                return;
+            }
+            if (x < minX) minX = x;
+            if (y < minY) minY = y;
+            if (z < minZ) minZ = z;
+            if (x > maxX) maxX = x;
+            if (y > maxY) maxY = y;
+            if (z > maxZ) maxZ = z;
+        }
+
+        StlBounds toBounds() throws IOException {
+            if (!hasPoint) {
+                throw new IOException("STL appears to contain no vertices");
+            }
+            return new StlBounds(minX, minY, minZ, maxX, maxY, maxZ);
+        }
+    }
+}

backend/src/main/java/com/printcalculator/service/TwintPaymentService.java

@@ -1,66 +0,0 @@
-package com.printcalculator.service;
-
-import io.nayuki.qrcodegen.QrCode;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.stereotype.Service;
-
-import javax.imageio.ImageIO;
-import java.awt.*;
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-
-@Service
-public class TwintPaymentService {
-
-    private final String twintPaymentUrl;
-
-    public TwintPaymentService(
-            @Value("${payment.twint.url:https://go.twint.ch/1/e/tw?tw=acq.gERQQytOTnyIMuQHUqn4hlxgciHE5X7nnqHnNSPAr2OF2K3uBlXJDr2n9JU3sgxa.}")
-            String twintPaymentUrl
-    ) {
-        this.twintPaymentUrl = twintPaymentUrl;
-    }
-
-    public String getTwintPaymentUrl() {
-        return twintPaymentUrl;
-    }
-
-    public byte[] generateQrPng(int sizePx) {
-        try {
-            // Use High Error Correction for financial QR codes
-            QrCode qrCode = QrCode.encodeText(twintPaymentUrl, QrCode.Ecc.HIGH);
-            
-            // Standard QR quiet zone is 4 modules
-            int borderModules = 4;
-            int fullModules = qrCode.size + borderModules * 2;
-            int scale = Math.max(1, sizePx / fullModules);
-            int imageSize = fullModules * scale;
-
-            BufferedImage image = new BufferedImage(imageSize, imageSize, BufferedImage.TYPE_INT_RGB);
-            Graphics2D graphics = image.createGraphics();
-            try {
-                graphics.setColor(Color.WHITE);
-                graphics.fillRect(0, 0, imageSize, imageSize);
-                graphics.setColor(Color.BLACK);
-
-                for (int y = 0; y < qrCode.size; y++) {
-                    for (int x = 0; x < qrCode.size; x++) {
-                        if (qrCode.getModule(x, y)) {
-                            int px = (x + borderModules) * scale;
-                            int py = (y + borderModules) * scale;
-                            graphics.fillRect(px, py, scale, scale);
-                        }
-                    }
-                }
-            } finally {
-                graphics.dispose();
-            }
-
-            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-            ImageIO.write(image, "png", outputStream);
-            return outputStream.toByteArray();
-        } catch (Exception ex) {
-            throw new IllegalStateException("Unable to generate TWINT QR image.", ex);
-        }
-    }
-}

backend/src/main/java/com/printcalculator/service/email/EmailNotificationService.java

@@ -1,17 +0,0 @@
-package com.printcalculator.service.email;
-
-import java.util.Map;
-
-public interface EmailNotificationService {
-
-    /**
-     * Sends an HTML email using a Thymeleaf template.
-     *
-     * @param to           The recipient email address.
-     * @param subject      The subject of the email.
-     * @param templateName The name of the Thymeleaf template (e.g., "order-confirmation").
-     * @param contextData  The data to populate the template with.
-     */
-    void sendEmail(String to, String subject, String templateName, Map<String, Object> contextData);
-
-}

backend/src/main/java/com/printcalculator/service/email/SmtpEmailNotificationService.java

@@ -1,54 +0,0 @@
-package com.printcalculator.service.email;
-
-import jakarta.mail.MessagingException;
-import jakarta.mail.internet.MimeMessage;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.mail.javamail.JavaMailSender;
-import org.springframework.mail.javamail.MimeMessageHelper;
-import org.springframework.stereotype.Service;
-import org.thymeleaf.TemplateEngine;
-import org.thymeleaf.context.Context;
-
-import java.util.Map;
-
-@Slf4j
-@Service
-@RequiredArgsConstructor
-public class SmtpEmailNotificationService implements EmailNotificationService {
-
-    private final JavaMailSender emailSender;
-    private final TemplateEngine templateEngine;
-
-    @Value("${app.mail.from}")
-    private String fromAddress;
-
-    @Override
-    public void sendEmail(String to, String subject, String templateName, Map<String, Object> contextData) {
-        log.info("Preparing to send email to {} with template {}", to, templateName);
-
-        try {
-            Context context = new Context();
-            context.setVariables(contextData);
-
-            String process = templateEngine.process("email/" + templateName, context);
-            MimeMessage mimeMessage = emailSender.createMimeMessage();
-            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
-
-            helper.setFrom(fromAddress);
-            helper.setTo(to);
-            helper.setSubject(subject);
-            helper.setText(process, true); // true indicates HTML format
-
-            emailSender.send(mimeMessage);
-            log.info("Email successfully sent to {}", to);
-
-        } catch (MessagingException e) {
-            log.error("Failed to send email to {}", to, e);
-            // Non blocco l'ordine se l'email fallisce, ma loggo l'errore adeguatamente.
-        } catch (Exception e) {
-            log.error("Unexpected error while sending email to {}", to, e);
-        }
-    }
-}

backend/src/main/resources/application.properties

@@ -24,19 +24,3 @@ clamav.host=${CLAMAV_HOST:clamav}
 clamav.port=${CLAMAV_PORT:3310}
 clamav.enabled=${CLAMAV_ENABLED:false}
 
-# TWINT Configuration
-payment.twint.url=${TWINT_PAYMENT_URL:https://go.twint.ch/1/e/tw?tw=acq.gERQQytOTnyIMuQHUqn4hlxgciHE5X7nnqHnNSPAr2OF2K3uBlXJDr2n9JU3sgxa.}
-
-# Mail Configuration
-spring.mail.host=${MAIL_HOST:mail.infomaniak.com}
-spring.mail.port=${MAIL_PORT:587}
-spring.mail.username=${MAIL_USERNAME:info@3d-fab.ch}
-spring.mail.password=${MAIL_PASSWORD:ht*44k+Tq39R+R-O}
-spring.mail.properties.mail.smtp.auth=${MAIL_SMTP_AUTH:false}
-spring.mail.properties.mail.smtp.starttls.enable=${MAIL_SMTP_STARTTLS:false}
-
-# Application Mail Settings
-app.mail.from=${APP_MAIL_FROM:${MAIL_USERNAME:noreply@printcalculator.local}}
-app.mail.admin.enabled=${APP_MAIL_ADMIN_ENABLED:true}
-app.mail.admin.address=${APP_MAIL_ADMIN_ADDRESS:admin@printcalculator.local}
-app.frontend.base-url=${APP_FRONTEND_BASE_URL:http://localhost:4200}

backend/src/main/resources/templates/email/order-confirmation.html

@@ -1,93 +0,0 @@
-<!DOCTYPE html>
-<html xmlns:th="http://www.thymeleaf.org">
-<head>
-    <meta charset="UTF-8">
-    <title>Conferma Ordine</title>
-    <style>
-        body {
-            font-family: Arial, sans-serif;
-            background-color: #f4f4f4;
-            margin: 0;
-            padding: 0;
-        }
-        .container {
-            max-width: 600px;
-            margin: 20px auto;
-            background-color: #ffffff;
-            padding: 20px;
-            border-radius: 8px;
-            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
-        }
-        .header {
-            text-align: center;
-            border-bottom: 1px solid #eeeeee;
-            padding-bottom: 20px;
-            margin-bottom: 20px;
-        }
-        .header h1 {
-            color: #333333;
-        }
-        .content {
-            color: #555555;
-            line-height: 1.6;
-        }
-        .order-details {
-            background-color: #f9f9f9;
-            padding: 15px;
-            border-radius: 5px;
-            margin-top: 20px;
-        }
-        .order-details th {
-            text-align: left;
-            padding-right: 20px;
-            color: #333333;
-        }
-        .footer {
-            text-align: center;
-            font-size: 0.9em;
-            color: #999999;
-            margin-top: 30px;
-            border-top: 1px solid #eeeeee;
-            padding-top: 20px;
-        }
-    </style>
-</head>
-<body>
-    <div class="container">
-        <div class="header">
-            <h1>Grazie per il tuo ordine #<span th:text="${orderNumber}">00000000</span></h1>
-        </div>
-        <div class="content">
-            <p>Ciao <span th:text="${customerName}">Cliente</span>,</p>
-            <p>Abbiamo ricevuto il tuo ordine e stiamo iniziando a elaborarlo. Ecco un riepilogo dei dettagli:</p>
-
-            <div class="order-details">
-                <table>
-                    <tr>
-                        <th>Numero Ordine:</th>
-                        <td th:text="${orderNumber}">00000000</td>
-                    </tr>
-                    <tr>
-                        <th>Data:</th>
-                        <td th:text="${orderDate}">01/01/2026</td>
-                    </tr>
-                    <tr>
-                        <th>Costo totale:</th>
-                        <td th:text="${totalCost} + ' CHF'">0.00 CHF</td>
-                    </tr>
-                </table>
-            </div>
-
-            <p>
-                Clicca qui per i dettagli:
-                <a th:href="${orderDetailsUrl}" th:text="${orderDetailsUrl}">https://tuosito.it/ordine/00000000-0000-0000-0000-000000000000</a>
-            </p>
-
-            <p>Se hai domande o dubbi, non esitare a contattarci.</p>
-        </div>
-        <div class="footer">
-            <p>&copy; 2026 3D-Fab. Tutti i diritti riservati.</p>
-        </div>
-    </div>
-</body>
-</html>

backend/src/main/resources/templates/invoice.html

@@ -3,246 +3,81 @@
 <head>
   <meta charset="utf-8"/>
   <style>
-    @page invoice { size: 8.5in 11in; margin: 0.65in; }
-    @page qrpage { size: A4; margin: 0; }
-
-    body {
-      page: invoice;
-      font-family: Helvetica, Arial, sans-serif;
-      font-size: 10pt;
-      margin: 0;
-      padding: 0;
-      background: #fff;
-      color: #1a1a1a;
-    }
-
-    .invoice-page {
-      page: invoice;
-      width: 100%;
-    }
-
-    .header-table {
-      width: 100%;
-      border-collapse: collapse;
-      table-layout: fixed;
-    }
-
-    .header-table td {
-      vertical-align: top;
-      padding: 0;
-    }
-
-    .header-left {
-      width: 58%;
-      line-height: 1.35;
-    }
-
-    .header-right {
-      width: 42%;
-      text-align: right;
-      line-height: 1.35;
-    }
-
-    .invoice-title {
-      font-size: 15pt;
-      font-weight: 700;
-      margin: 0 0 4mm 0;
-      letter-spacing: 0.3px;
-    }
-
-    .section-title {
-      margin: 9mm 0 2mm 0;
-      font-size: 10.5pt;
-      font-weight: 700;
-      text-transform: uppercase;
-      letter-spacing: 0.2px;
-    }
-
-    .buyer-box {
-      margin: 0;
-      line-height: 1.4;
-      min-height: 20mm;
-    }
-
-    .line-items {
-      width: 100%;
-      border-collapse: collapse;
-      table-layout: fixed;
-      margin-top: 8mm;
-    }
-
-    .line-items th,
-    .line-items td {
-      border-bottom: 1px solid #d8d8d8;
-      padding: 2.8mm 2.2mm;
-      vertical-align: top;
-      word-break: break-word;
-    }
-
-    .line-items th {
-      text-align: left;
-      font-weight: 700;
-      background: #f7f7f7;
-    }
-
-    .line-items th:nth-child(1),
-    .line-items td:nth-child(1) {
-      width: 54%;
-    }
-
-    .line-items th:nth-child(2),
-    .line-items td:nth-child(2) {
-      width: 12%;
-      text-align: right;
-      white-space: nowrap;
-    }
-
-    .line-items th:nth-child(3),
-    .line-items td:nth-child(3) {
-      width: 17%;
-      text-align: right;
-      white-space: nowrap;
-    }
-
-    .line-items th:nth-child(4),
-    .line-items td:nth-child(4) {
-      width: 17%;
-      text-align: right;
-      white-space: nowrap;
-      font-weight: 600;
-    }
-
-    .totals {
-      margin-top: 7mm;
-      margin-left: auto;
-      width: 76mm;
-      border-collapse: collapse;
-    }
-
-    .totals td {
-      border: none;
-      padding: 1.6mm 0;
-    }
-
-    .totals-label {
-      text-align: left;
-      color: #3a3a3a;
-    }
-
-    .totals-value {
-      text-align: right;
-      white-space: nowrap;
-      font-weight: 600;
-    }
-
-    .total-strong td {
-      font-size: 11pt;
-      font-weight: 700;
-      padding-top: 2.4mm;
-      border-top: 1px solid #d8d8d8;
-    }
-
-    .payment-terms {
-      margin-top: 9mm;
-      line-height: 1.4;
-      color: #2b2b2b;
-    }
-
-    .qr-only-page {
-      page: qrpage;
-      position: relative;
-      width: 210mm;
-      height: 297mm;
-      background: #fff;
-      page-break-before: always;
-      break-before: page;
-    }
-
-    .qr-bill-bottom {
-      position: absolute;
-      left: 0;
-      bottom: 0;
-      width: 210mm;
-      height: 105mm;
-      overflow: hidden;
-      background: #fff;
-    }
-
-    .qr-bill-bottom svg {
-      width: 210mm !important;
-      height: 105mm !important;
-      display: block;
-    }
+    @page { size: A4; margin: 18mm 15mm; }
+    body { font-family: sans-serif; font-size: 10.5pt; }
+    .header { display: flex; justify-content: space-between; }
+    .addresses { margin-top: 10mm; display: flex; justify-content: space-between; }
+    table { width: 100%; border-collapse: collapse; margin-top: 8mm; }
+    th, td { padding: 6px; border-bottom: 1px solid #ccc; }
+    th { text-align: left; }
+    .totals { margin-top: 6mm; width: 40%; margin-left: auto; }
+    .totals td { border: none; }
+    .page-break { page-break-before: always; }
   </style>
 </head>
 <body>
-<div class="invoice-page">
 
-<table class="header-table">
-  <tr>
-    <td class="header-left">
-      <div><strong th:text="${sellerDisplayName}">Nome Cognome</strong></div>
-      <div th:text="${sellerAddressLine1}">Via Esempio 12</div>
-      <div th:text="${sellerAddressLine2}">6500 Bellinzona, CH</div>
-      <div th:text="${sellerEmail}">email@example.com</div>
-    </td>
-    <td class="header-right">
-      <div class="invoice-title">Fattura</div>
-      <div>Numero: <span th:text="${invoiceNumber}">2026-000123</span></div>
-      <div>Data: <span th:text="${invoiceDate}">2026-02-13</span></div>
-      <div>Scadenza: <span th:text="${dueDate}">2026-02-20</span></div>
-    </td>
-  </tr>
-</table>
-
-<div class="section-title">Fatturare a</div>
-<div class="buyer-box">
+<div class="header">
   <div>
+    <div><strong th:text="${sellerDisplayName}">Nome Cognome</strong></div>
+    <div th:text="${sellerAddressLine1}">Via Esempio 12</div>
+    <div th:text="${sellerAddressLine2}">6500 Bellinzona, CH</div>
+    <div th:text="${sellerEmail}">email@example.com</div>
+  </div>
+
+  <div>
+    <div><strong>Fattura</strong></div>
+    <div>Numero: <span th:text="${invoiceNumber}">2026-000123</span></div>
+    <div>Data: <span th:text="${invoiceDate}">2026-02-13</span></div>
+    <div>Scadenza: <span th:text="${dueDate}">2026-02-20</span></div>
+  </div>
+</div>
+
+<div class="addresses">
+  <div>
+    <div><strong>Fatturare a</strong></div>
     <div th:text="${buyerDisplayName}">Cliente SA</div>
     <div th:text="${buyerAddressLine1}">Via Cliente 7</div>
     <div th:text="${buyerAddressLine2}">8000 Zürich, CH</div>
   </div>
 </div>
 
-<table class="line-items">
+<table>
   <thead>
     <tr>
       <th>Descrizione</th>
-      <th>Qtà</th>
-      <th>Prezzo</th>
-      <th>Totale</th>
+      <th style="text-align:right;">Qtà</th>
+      <th style="text-align:right;">Prezzo</th>
+      <th style="text-align:right;">Totale</th>
     </tr>
   </thead>
   <tbody>
     <tr th:each="lineItem : ${invoiceLineItems}">
       <td th:text="${lineItem.description}">Stampa 3D pezzo X</td>
-      <td th:text="${lineItem.quantity}">1</td>
-      <td th:text="${lineItem.unitPriceFormatted}">CHF 10.00</td>
-      <td th:text="${lineItem.lineTotalFormatted}">CHF 10.00</td>
+      <td style="text-align:right;" th:text="${lineItem.quantity}">1</td>
+      <td style="text-align:right;" th:text="${lineItem.unitPriceFormatted}">CHF 10.00</td>
+      <td style="text-align:right;" th:text="${lineItem.lineTotalFormatted}">CHF 10.00</td>
     </tr>
   </tbody>
 </table>
 
 <table class="totals">
   <tr>
-    <td class="totals-label">Subtotale</td>
-    <td class="totals-value" th:text="${subtotalFormatted}">CHF 10.00</td>
+    <td>Subtotale</td>
+    <td style="text-align:right;" th:text="${subtotalFormatted}">CHF 10.00</td>
   </tr>
-  <tr class="total-strong">
-    <td class="totals-label">Totale</td>
-    <td class="totals-value" th:text="${grandTotalFormatted}">CHF 10.00</td>
+  <tr>
+    <td><strong>Totale</strong></td>
+    <td style="text-align:right;"><strong th:text="${grandTotalFormatted}">CHF 10.00</strong></td>
   </tr>
 </table>
 
-<div class="payment-terms" th:text="${paymentTermsText}">
+<div style="margin-top:6mm;" th:text="${paymentTermsText}">
   Pagamento entro 7 giorni. Grazie.
 </div>
 
-</div>
-
-<div class="qr-only-page">
-  <div class="qr-bill-bottom" th:utext="${qrBillSvg}">
-  </div>
+<div style="page-break-before: always;"></div>
+<div style="position: absolute; bottom: 0; left: 0; width: 210mm; height: 105mm;" th:utext="${qrBillSvg}">
 </div>
 
 </body>

backend/src/test/java/com/printcalculator/ManualSessionPersistenceTest.java

@@ -0,0 +1,151 @@
+package com.printcalculator;
+
+import com.printcalculator.controller.QuoteSessionController;
+import com.printcalculator.dto.PrintSettingsDto;
+import com.printcalculator.entity.QuoteSession;
+import com.printcalculator.entity.QuoteLineItem;
+import com.printcalculator.repository.QuoteSessionRepository;
+import com.printcalculator.repository.QuoteLineItemRepository;
+import com.printcalculator.repository.PrinterMachineRepository;
+import com.printcalculator.service.SlicerService;
+import com.printcalculator.service.QuoteCalculator;
+import com.printcalculator.service.StorageService;
+import com.printcalculator.service.StlService;
+import com.printcalculator.service.ProfileManager;
+import com.printcalculator.model.PrintStats;
+import com.printcalculator.model.QuoteResult;
+import com.printcalculator.entity.PrinterMachine;
+import com.printcalculator.model.StlBounds;
+import com.printcalculator.model.StlShiftResult;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.http.ResponseEntity;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.io.File;
+import java.math.BigDecimal;
+import java.nio.file.Path;
+import java.util.Optional;
+import java.util.Map;
+import java.util.List;
+import java.util.UUID;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.when;
+import static org.mockito.Mockito.verify;
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.mockito.ArgumentCaptor;
+
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+
+@WebMvcTest(QuoteSessionController.class)
+public class ManualSessionPersistenceTest {
+
+    @Autowired
+    private QuoteSessionController controller;
+
+    @MockitoBean
+    private QuoteSessionRepository sessionRepo;
+
+    @MockitoBean
+    private QuoteLineItemRepository lineItemRepo; // Mock this too
+
+    @MockitoBean
+    private SlicerService slicerService;
+
+    @MockitoBean
+    private StorageService storageService;
+
+    @MockitoBean
+    private StlService stlService;
+
+    @MockitoBean
+    private ProfileManager profileManager;
+    
+    @MockitoBean
+    private QuoteCalculator quoteCalculator;
+    
+    @MockitoBean
+    private PrinterMachineRepository machineRepo;
+    
+    @MockitoBean
+    private com.printcalculator.repository.PricingPolicyRepository pricingRepo; // Add this if needed by controller
+
+    @Test
+    public void testSettingsPersistence() throws Exception {
+        // Prepare
+        UUID sessionId = UUID.randomUUID();
+        QuoteSession session = new QuoteSession();
+        session.setId(sessionId);
+        session.setMaterialCode("pla_basic"); // Initial state
+        
+        when(sessionRepo.findById(sessionId)).thenReturn(Optional.of(session));
+        when(sessionRepo.save(any(QuoteSession.class))).thenAnswer(i -> i.getArguments()[0]);
+        when(lineItemRepo.save(any(QuoteLineItem.class))).thenAnswer(i -> i.getArguments()[0]);
+
+        // 2. Add Item with Custom Settings
+        PrintSettingsDto settings = new PrintSettingsDto();
+        settings.setComplexityMode("ADVANCED");
+        settings.setMaterial("petg_basic");
+        settings.setLayerHeight(0.12);
+        settings.setInfillDensity(50.0);
+        settings.setInfillPattern("gyroid");
+        settings.setSupportsEnabled(true);
+        settings.setNozzleDiameter(0.6);
+        settings.setNotes("Test Notes");
+        
+        MockMultipartFile file = new MockMultipartFile("file", "test.stl", "application/octet-stream", "dummy content".getBytes());
+        
+        // Mock dependencies
+        when(machineRepo.findFirstByIsActiveTrue()).thenReturn(Optional.of(new PrinterMachine(){{
+            setPrinterDisplayName("TestPrinter");
+            setSlicerMachineProfile("TestProfile");
+            setBuildVolumeXMm(256);
+            setBuildVolumeYMm(256);
+            setBuildVolumeZMm(256);
+        }}));
+        when(slicerService.slice(any(), any(), any(), any(), any(), any())).thenReturn(new PrintStats(100, "1m", 10.0, 100));
+        when(quoteCalculator.calculate(any(), any(), any())).thenReturn(
+            new QuoteResult(10.0, "CHF", new PrintStats(100, "1m", 10.0, 100), 0.0)
+        );
+        when(stlService.readBounds(any())).thenReturn(new StlBounds(0, 0, 0, 10, 10, 10));
+        when(stlService.shiftToFitIfNeeded(any(), any(), anyInt(), anyInt(), anyInt()))
+                .thenReturn(new StlShiftResult(null, 0, 0, 0, false));
+        when(profileManager.resolveMachineProfileName(any(), any())).thenAnswer(i -> i.getArguments()[0]);
+        when(storageService.loadAsResource(any())).thenReturn(new org.springframework.core.io.ByteArrayResource("dummy".getBytes()){
+            @Override
+            public File getFile() { return new File("dummy"); }
+        });
+
+        controller.addItemToExistingSession(sessionId, settings, file);
+        
+        // 3. Verify Session Updated via Save Call capture
+        ArgumentCaptor<QuoteSession> captor = ArgumentCaptor.forClass(QuoteSession.class);
+        verify(sessionRepo).save(captor.capture());
+        
+        QuoteSession updatedSession = captor.getValue();
+        
+        assertEquals("petg_basic", updatedSession.getMaterialCode());
+        assertEquals(0, BigDecimal.valueOf(0.12).compareTo(updatedSession.getLayerHeightMm()));
+        assertEquals(50, updatedSession.getInfillPercent());
+        assertEquals("gyroid", updatedSession.getInfillPattern());
+        assertTrue(updatedSession.getSupportsEnabled());
+        assertEquals(0, BigDecimal.valueOf(0.6).compareTo(updatedSession.getNozzleDiameterMm()));
+        assertEquals("Test Notes", updatedSession.getNotes());
+        
+        System.out.println("Verification Passed: Settings were persisted to Session.");
+    }
+    @org.springframework.boot.test.context.TestConfiguration
+    static class TestConfig {
+        @org.springframework.context.annotation.Bean
+        public org.springframework.transaction.PlatformTransactionManager transactionManager() {
+            return org.mockito.Mockito.mock(org.springframework.transaction.PlatformTransactionManager.class);
+        }
+    }
+}

backend/src/test/java/com/printcalculator/config/TestConfig.java

@@ -0,0 +1,23 @@
+package com.printcalculator.config;
+
+import com.printcalculator.service.ClamAVService;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+
+import java.io.InputStream;
+
+@TestConfiguration
+public class TestConfig {
+
+    @Bean
+    @Primary
+    public ClamAVService mockClamAVService() {
+        return new ClamAVService("localhost", 3310, true) {
+            @Override
+            public boolean scan(InputStream inputStream) {
+                return true; // Always clean for tests
+            }
+        };
+    }
+}

backend/src/test/java/com/printcalculator/controller/OrderIntegrationTest.java

@@ -0,0 +1,176 @@
+package com.printcalculator.controller;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.printcalculator.dto.CreateOrderRequest;
+import com.printcalculator.dto.CustomerDto;
+import com.printcalculator.dto.AddressDto;
+import com.printcalculator.entity.QuoteLineItem;
+import com.printcalculator.entity.QuoteSession;
+import com.printcalculator.repository.OrderRepository;
+import com.printcalculator.repository.QuoteLineItemRepository;
+import com.printcalculator.repository.QuoteSessionRepository;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.util.FileSystemUtils;
+
+import java.io.File;
+import java.math.BigDecimal;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.time.OffsetDateTime;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import com.printcalculator.service.ClamAVService;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@org.springframework.test.context.TestPropertySource(properties = {
+    "spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=PostgreSQL",
+    "spring.datasource.driverClassName=org.h2.Driver",
+    "spring.datasource.username=sa",
+    "spring.datasource.password=",
+    "spring.jpa.database-platform=org.hibernate.dialect.H2Dialect",
+    "spring.jpa.hibernate.ddl-auto=create-drop"
+})
+class OrderIntegrationTest {
+
+    @MockitoBean
+    private ClamAVService clamAVService;
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Autowired
+    private QuoteSessionRepository sessionRepository;
+
+    @Autowired
+    private QuoteLineItemRepository lineItemRepository;
+
+    @Autowired
+    private OrderRepository orderRepository;
+    
+    @Autowired
+    private ObjectMapper objectMapper;
+
+    private UUID sessionId;
+    private UUID lineItemId;
+    private final String TEST_FILENAME = "test_model.stl";
+
+    @BeforeEach
+    void setup() throws Exception {
+        // Mock ClamAV to always return true (safe)
+        when(clamAVService.scan(any())).thenReturn(true);
+
+        // 1. Create Quote Session
+        QuoteSession session = new QuoteSession();
+        session.setStatus("ACTIVE");
+        session.setMaterialCode("PLA");
+        session.setPricingVersion("v1");
+        session.setCreatedAt(OffsetDateTime.now());
+        session.setExpiresAt(OffsetDateTime.now().plusDays(7));
+        session.setSetupCostChf(BigDecimal.valueOf(5.00));
+        session.setSupportsEnabled(false);
+        session = sessionRepository.save(session);
+        this.sessionId = session.getId();
+
+        // 2. Create Dummy File on Disk (storage_quotes)
+        Path sessionDir = Paths.get("storage_quotes", sessionId.toString());
+        Files.createDirectories(sessionDir);
+        Path filePath = sessionDir.resolve(UUID.randomUUID() + ".stl");
+        Files.writeString(filePath, "dummy content");
+
+        // 3. Create Quote Line Item
+        QuoteLineItem item = new QuoteLineItem();
+        item.setQuoteSession(session);
+        item.setStatus("READY");
+        item.setOriginalFilename(TEST_FILENAME);
+        item.setStoredPath(filePath.toString());
+        item.setQuantity(2);
+        item.setPrintTimeSeconds(120);
+        item.setMaterialGrams(BigDecimal.valueOf(10.5));
+        item.setUnitPriceChf(BigDecimal.valueOf(10.00));
+        item.setCreatedAt(OffsetDateTime.now());
+        item.setUpdatedAt(OffsetDateTime.now());
+        item = lineItemRepository.save(item);
+        this.lineItemId = item.getId();
+    }
+
+    @AfterEach
+    void cleanup() throws Exception {
+        // Cleanup generated files
+        FileSystemUtils.deleteRecursively(Paths.get("storage_quotes"));
+        FileSystemUtils.deleteRecursively(Paths.get("storage_orders"));
+        
+        // Clean DB
+        orderRepository.deleteAll();
+        lineItemRepository.deleteAll();
+        sessionRepository.deleteAll();
+    }
+
+    @Test
+    void testCreateOrderFromQuote_ShouldCopyFilesAndUpdateStatus() throws Exception {
+        // Prepare Request
+        CreateOrderRequest request = new CreateOrderRequest();
+        
+        CustomerDto customer = new CustomerDto();
+        customer.setEmail("integration@test.com");
+        customer.setCustomerType("PRIVATE");
+        request.setCustomer(customer);
+        
+        AddressDto billing = new AddressDto();
+        billing.setFirstName("John");
+        billing.setLastName("Doe");
+        billing.setAddressLine1("Street 1");
+        billing.setCity("City");
+        billing.setZip("1000");
+        billing.setCountryCode("CH");
+        request.setBillingAddress(billing);
+        
+        request.setShippingSameAsBilling(true);
+
+        // Execute Request
+        mockMvc.perform(post("/api/orders/from-quote/" + sessionId)
+                .contentType(MediaType.APPLICATION_JSON)
+                .content(objectMapper.writeValueAsString(request)))
+                .andExpect(status().isOk());
+
+        // Verify Session Status
+        QuoteSession updatedSession = sessionRepository.findById(sessionId).orElseThrow();
+        assertEquals("CONVERTED", updatedSession.getStatus(), "Session status should be CONVERTED");
+        assertNotNull(updatedSession.getConvertedOrderId(), "Converted Order ID should be set");
+
+        UUID orderId = updatedSession.getConvertedOrderId();
+
+        // Verify File Copy
+        Path orderStorageDir = Paths.get("storage_orders");
+        // We need to find the specific file. Structure: storage_orders/orderId/3d-files/orderItemId/filename
+        // Since we don't know OrderItemId easily without querying DB, let's walk the dir.
+        
+        try (var stream = Files.walk(orderStorageDir)) {
+            boolean fileFound = stream
+                    .filter(Files::isRegularFile)
+                    .anyMatch(path -> {
+                        try {
+                            return Files.readString(path).equals("dummy content");
+                        } catch (Exception e) {
+                            return false;
+                        }
+                    });
+            assertTrue(fileFound, "The file should have been copied to storage_orders with correct content");
+        }
+    }
+}

backend/src/test/java/com/printcalculator/service/GCodeParserTest.java

@@ -27,10 +27,10 @@ class GCodeParserTest {
         PrintStats stats = parser.parse(tempFile);
 
         // Assert
-        assertEquals(3723, stats.printTimeSeconds()); // 3600 + 120 + 3
-        assertEquals("1h 2m 3s", stats.printTimeFormatted());
-        assertEquals(10.5, stats.filamentWeightGrams(), 0.001);
-        assertEquals(3000.0, stats.filamentLengthMm(), 0.001);
+        assertEquals(3723L, stats.getPrintTimeSeconds()); // 3600 + 120 + 3
+        assertEquals("1h 2m 3s", stats.getPrintTimeFormatted());
+        assertEquals(10.5, stats.getFilamentWeightGrams(), 0.001);
+        assertEquals(3000.0, stats.getFilamentLengthMm(), 0.001);
 
         tempFile.delete();
     }
@@ -49,8 +49,8 @@ class GCodeParserTest {
         GCodeParser parser = new GCodeParser();
         PrintStats stats = parser.parse(tempFile);
 
-        assertEquals(750, stats.printTimeSeconds()); // 12*60 + 30
-        assertEquals(5.0, stats.filamentWeightGrams(), 0.001);
+        assertEquals(750L, stats.getPrintTimeSeconds()); // 12*60 + 30
+        assertEquals(5.0, stats.getFilamentWeightGrams(), 0.001);
 
         tempFile.delete();
     }
@@ -69,8 +69,8 @@ class GCodeParserTest {
         GCodeParser parser = new GCodeParser();
         PrintStats stats = parser.parse(tempFile);
 
-        assertEquals(3723L, stats.printTimeSeconds()); 
-        assertEquals("1h 2m 3s", stats.printTimeFormatted());
+        assertEquals(3723L, stats.getPrintTimeSeconds()); 
+        assertEquals("1h 2m 3s", stats.getPrintTimeFormatted());
 
         tempFile.delete();
     }
@@ -87,8 +87,8 @@ class GCodeParserTest {
         GCodeParser parser = new GCodeParser();
         PrintStats stats = parser.parse(tempFile);
 
-        assertEquals(3723L, stats.printTimeSeconds());
-        assertEquals("01:02:03", stats.printTimeFormatted());
+        assertEquals(3723L, stats.getPrintTimeSeconds());
+        assertEquals("01:02:03", stats.getPrintTimeFormatted());
 
         tempFile.delete();
     }
@@ -105,8 +105,8 @@ class GCodeParserTest {
         GCodeParser parser = new GCodeParser();
         PrintStats stats = parser.parse(tempFile);
 
-        assertEquals(321L, stats.printTimeSeconds());
-        assertEquals("5m 21s", stats.printTimeFormatted());
+        assertEquals(321L, stats.getPrintTimeSeconds());
+        assertEquals("5m 21s", stats.getPrintTimeFormatted());
 
         tempFile.delete();
     }

backend/src/test/java/com/printcalculator/service/SlicerServiceTest.java

@@ -0,0 +1,123 @@
+package com.printcalculator.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.printcalculator.model.PrintStats;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
+import static org.mockito.ArgumentMatchers.any;
+
+class SlicerServiceTest {
+
+    @Mock
+    private ProfileManager profileManager;
+    
+    @Mock
+    private GCodeParser gCodeParser;
+
+    private ObjectMapper mapper = new ObjectMapper();
+
+    private SlicerService slicerService;
+
+    @TempDir
+    Path tempDir;
+
+    // Captured execution details
+    private List<String> lastCommand;
+    private Path lastTempDir;
+
+    @BeforeEach
+    void setUp() throws IOException {
+        MockitoAnnotations.openMocks(this);
+
+        // Subclass to override runSlicerCommand
+        slicerService = new SlicerService("orca-slicer", profileManager, gCodeParser, mapper) {
+            @Override
+            protected void runSlicerCommand(List<String> command, Path tempDir) throws IOException, InterruptedException {
+                lastCommand = command;
+                lastTempDir = tempDir;
+                // Don't run actual process.
+                // Simulate GCode output creation for the parser to find?
+                // Or just let it fail at parser step since we only care about JSON generation here?
+                // For a full test, we should create a dummy GCode file.
+                
+                File stl = new File(command.get(command.size() - 1));
+                String basename = stl.getName().replace(".stl", "");
+                Files.createFile(tempDir.resolve(basename + ".gcode"));
+            }
+        };
+        
+        // Mock Profile Responses
+        ObjectNode emptyNode = mapper.createObjectNode();
+        when(profileManager.getMergedProfile(anyString(), eq("machine"))).thenReturn(emptyNode.deepCopy());
+        when(profileManager.getMergedProfile(anyString(), eq("filament"))).thenReturn(emptyNode.deepCopy());
+        when(profileManager.getMergedProfile(anyString(), eq("process"))).thenReturn(emptyNode.deepCopy());
+        
+        // Mock Parser
+        when(gCodeParser.parse(any(File.class))).thenReturn(new PrintStats(100, "1m 40s", 10.5, 1000));
+    }
+
+    @Test
+    void testSlice_WithDefaults_ShouldGenerateConfig() throws IOException {
+        File dummyStl = tempDir.resolve("test.stl").toFile();
+        Files.createFile(dummyStl.toPath());
+
+        slicerService.slice(dummyStl, "Bambu A1", "PLA", "Standard", null, null);
+
+        assertNotNull(lastTempDir);
+        assertTrue(Files.exists(lastTempDir.resolve("process.json")));
+        assertTrue(Files.exists(lastTempDir.resolve("machine.json")));
+        assertTrue(Files.exists(lastTempDir.resolve("filament.json")));
+    }
+
+    @Test
+    void testSlice_WithLayerHeightOverride_ShouldUpdateProcessJson() throws IOException {
+        File dummyStl = tempDir.resolve("test.stl").toFile();
+        Files.createFile(dummyStl.toPath());
+
+        Map<String, String> processOverrides = new HashMap<>();
+        processOverrides.put("layer_height", "0.12");
+
+        slicerService.slice(dummyStl, "Bambu A1", "PLA", "Standard", null, processOverrides);
+
+        File processJsonFile = lastTempDir.resolve("process.json").toFile();
+        ObjectNode processJson = (ObjectNode) mapper.readTree(processJsonFile);
+        
+        assertTrue(processJson.has("layer_height"));
+        assertEquals("0.12", processJson.get("layer_height").asText());
+    }
+
+    @Test
+    void testSlice_WithInfillAndSupportOverrides_ShouldUpdateProcessJson() throws IOException {
+        File dummyStl = tempDir.resolve("test.stl").toFile();
+        Files.createFile(dummyStl.toPath());
+
+        Map<String, String> processOverrides = new HashMap<>();
+        processOverrides.put("sparse_infill_density", "25%");
+        processOverrides.put("enable_support", "1");
+
+        slicerService.slice(dummyStl, "Bambu A1", "PLA", "Standard", null, processOverrides);
+
+        File processJsonFile = lastTempDir.resolve("process.json").toFile();
+        ObjectNode processJson = (ObjectNode) mapper.readTree(processJsonFile);
+        
+        assertEquals("25%", processJson.get("sparse_infill_density").asText());
+        assertEquals("1", processJson.get("enable_support").asText());
+    }
+}

db.sql

@@ -12,6 +12,7 @@ create table printer_machine
     fleet_weight         numeric(6, 3) not null default 1.000,
 
     is_active            boolean       not null default true,
+    slicer_machine_profile varchar(255),
     created_at           timestamptz   not null default now()
 );
 

deploy/envs/dev.env

@@ -7,7 +7,4 @@ TAG=dev
 BACKEND_PORT=18002
 FRONTEND_PORT=18082
 
-CLAMAV_HOST=192.168.1.147
-CLAMAV_PORT=3310
-CLAMAV_ENABLED=true
 

deploy/envs/int.env

@@ -7,7 +7,4 @@ TAG=int
 BACKEND_PORT=18001
 FRONTEND_PORT=18081
 
-CLAMAV_HOST=192.168.1.147
-CLAMAV_PORT=3310
-CLAMAV_ENABLED=true
 

deploy/envs/prod.env

@@ -7,7 +7,4 @@ TAG=prod
 BACKEND_PORT=8000
 FRONTEND_PORT=80
 
-CLAMAV_HOST=192.168.1.147
-CLAMAV_PORT=3310
-CLAMAV_ENABLED=true
 

docker-compose.deploy.yml

@@ -1,3 +1,5 @@
+version: '3.8'
+
 services:
   backend:
     # L'immagine usa il tag specificato nel file .env o passato da riga di comando
@@ -5,39 +7,26 @@ services:
     container_name: print-calculator-backend-${ENV}
     ports:
       - "${BACKEND_PORT}:8000"
+    env_file:
+      - .env
     environment:
-      - SPRING_PROFILES_ACTIVE=${ENV}
       - DB_URL=${DB_URL}
       - DB_USERNAME=${DB_USERNAME}
       - DB_PASSWORD=${DB_PASSWORD}
-      - CLAMAV_HOST=${CLAMAV_HOST}
-      - CLAMAV_PORT=${CLAMAV_PORT}
-      - CLAMAV_ENABLED=${CLAMAV_ENABLED}
-      - MAIL_HOST=${MAIL_HOST:-mail.infomaniak.com}
-      - MAIL_PORT=${MAIL_PORT:-587}
-      - MAIL_USERNAME=${MAIL_USERNAME:-info@3d-fab.ch}
-      - MAIL_PASSWORD=${MAIL_PASSWORD:-}
-      - MAIL_SMTP_AUTH=${MAIL_SMTP_AUTH:-true}
-      - MAIL_SMTP_STARTTLS=${MAIL_SMTP_STARTTLS:-true}
-      - APP_MAIL_FROM=${APP_MAIL_FROM:-info@3d-fab.ch}
-      - APP_MAIL_ADMIN_ENABLED=${APP_MAIL_ADMIN_ENABLED:-true}
-      - APP_MAIL_ADMIN_ADDRESS=${APP_MAIL_ADMIN_ADDRESS:-info@3d-fab.ch}
       - TEMP_DIR=/app/temp
       - PROFILES_DIR=/app/profiles
+      - CLAMAV_HOST=host.docker.internal
+      - CLAMAV_PORT=3310
+      - STORAGE_LOCATION=/app/storage
     restart: always
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "10m"
-        max-file: "3"
     volumes:
       - backend_profiles_${ENV}:/app/profiles
-      - /mnt/cache/appdata/print-calculator/${ENV}/storage_quotes:/app/storage_quotes
-      - /mnt/cache/appdata/print-calculator/${ENV}/storage_orders:/app/storage_orders
-      - /mnt/cache/appdata/print-calculator/${ENV}/storage_requests:/app/storage_requests
+      - /mnt/cache/appdata/print-calculator/${ENV}/storage_quotes:/app/storage/quotes
+      - /mnt/cache/appdata/print-calculator/${ENV}/storage_orders:/app/storage/orders
     extra_hosts:
       - "host.docker.internal:host-gateway"
 
+
   frontend:
     image: ${REGISTRY_URL}/${REPO_OWNER}/print-calculator-frontend:${TAG}
     container_name: print-calculator-frontend-${ENV}
@@ -46,11 +35,6 @@ services:
     depends_on:
       - backend
     restart: always
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "10m"
-        max-file: "3"
 
 volumes:
   backend_profiles_prod:

docker-compose.yml

@@ -13,20 +13,24 @@ services:
       - DB_USERNAME=printcalc
       - DB_PASSWORD=printcalc_secret
       - SPRING_PROFILES_ACTIVE=local
-      - FILAMENT_COST_PER_KG=22.0
-      - MACHINE_COST_PER_HOUR=2.50
-      - ENERGY_COST_PER_KWH=0.30
-      - PRINTER_POWER_WATTS=150
-      - MARKUP_PERCENT=20
       - TEMP_DIR=/app/temp
       - PROFILES_DIR=/app/profiles
       - CLAMAV_HOST=clamav
       - CLAMAV_PORT=3310
+      - STORAGE_LOCATION=/app/storage
     depends_on:
       - db
       - clamav
     restart: unless-stopped
 
+  clamav:
+    platform: linux/amd64
+    image: clamav/clamav:latest
+    container_name: print-calculator-clamav
+    ports:
+      - "3310:3310"
+    restart: unless-stopped
+
   frontend:
     build:
       context: ./frontend
@@ -52,16 +56,5 @@ services:
       - postgres_data:/var/lib/postgresql/data
     restart: unless-stopped
 
-  clamav:
-    platform: linux/amd64
-    image: clamav/clamav:latest
-    container_name: print-calculator-clamav
-    ports:
-      - "3310:3310"
-    volumes:
-      - clamav_db:/var/lib/clamav
-    restart: unless-stopped
-
 volumes:
   postgres_data:
-  clamav_db:

frontend/src/app/app.routes.ts

@@ -33,14 +33,6 @@ export const routes: Routes = [
         path: 'payment/:orderId',
         loadComponent: () => import('./features/payment/payment.component').then(m => m.PaymentComponent)
       },
-      {
-        path: 'ordine/:orderId',
-        loadComponent: () => import('./features/payment/payment.component').then(m => m.PaymentComponent)
-      },
-      {
-        path: 'order-confirmed/:orderId',
-        loadComponent: () => import('./features/order-confirmed/order-confirmed.component').then(m => m.OrderConfirmedComponent)
-      },
       {
         path: '',
         loadChildren: () => import('./features/legal/legal.routes').then(m => m.LEGAL_ROUTES)

frontend/src/app/features/calculator/calculator-page.component.html

@@ -2,8 +2,10 @@
   <h1>{{ 'CALC.TITLE' | translate }}</h1>
   <p class="subtitle">{{ 'CALC.SUBTITLE' | translate }}</p>
 
-  @if (error()) {
-    <app-alert type="error">{{ 'CALC.ERROR_GENERIC' | translate }}</app-alert>
+  @if (error() === 'VIRUS_DETECTED') {
+    <app-alert type="error">{{ 'CALC.ERROR_VIRUS_DETECTED' | translate }}</app-alert>
+  } @else if (error()) {
+    <app-alert type="error">{{ 'CALC.ERROR_' + error() | translate }}</app-alert>
   }
 </div>
 
@@ -19,12 +21,12 @@
           <div class="mode-selector">
             <div class="mode-option"
                  [class.active]="mode() === 'easy'"
-                 (click)="mode.set('easy')">
+                 (click)="setMode('easy')">
               {{ 'CALC.MODE_EASY' | translate }}
             </div>
             <div class="mode-option"
                  [class.active]="mode() === 'advanced'"
-                 (click)="mode.set('advanced')">
+                 (click)="setMode('advanced')">
               {{ 'CALC.MODE_ADVANCED' | translate }}
             </div>
           </div>
@@ -35,6 +37,7 @@
             [loading]="loading()"
             [uploadProgress]="uploadProgress()"
             (submitRequest)="onCalculate($event)"
+            (itemRemoved)="onItemRemoved($event)"
           ></app-upload-form>
         </app-card>
       </div>
@@ -42,15 +45,25 @@
       <!-- Right Column: Result or Info -->
       <div class="col-result" #resultCol>
     
-        @if (loading()) {
+        @if (loading() && !result()) {
+            <!-- Initial Loading State (before first result) -->
             <app-card class="loading-state">
                 <div class="loader-content">
                     <div class="spinner"></div>
-                    <h3 class="loading-title">{{ 'CALC.ANALYZING_TITLE' | translate }}</h3>
-                    <p class="loading-text">{{ 'CALC.ANALYZING_TEXT' | translate }}</p>
+                    <h3 class="loading-title">Analisi in corso...</h3>
+                    <p class="loading-text">Stiamo analizzando la geometria e calcolando il percorso utensile.</p>
                 </div>
             </app-card>
         } @else if (result()) {
+          <!-- Result State (Active or Finished) -->
+          @if (loading()) {
+               <!-- Small loader indicator when refining results -->
+               <div class="analyzing-bar">
+                   <div class="spinner-small"></div>
+                   <span>Analisi in corso... ({{ uploadProgress() }}%)</span>
+               </div>
+          }
+          
           <app-quote-result 
             [result]="result()!" 
             (consult)="onConsult()"

frontend/src/app/features/calculator/calculator-page.component.ts

@@ -26,7 +26,7 @@ export class CalculatorPageComponent implements OnInit {
   loading = signal(false);
   uploadProgress = signal(0);
   result = signal<QuoteResult | null>(null);
-  error = signal<boolean>(false);
+  error = signal<string | null>(null);
   
   orderSuccess = signal(false);
   
@@ -48,7 +48,7 @@ export class CalculatorPageComponent implements OnInit {
 
     this.route.queryParams.subscribe(params => {
         const sessionId = params['session'];
-        if (sessionId) {
+        if (sessionId && sessionId !== this.result()?.sessionId) {
             this.loadSession(sessionId);
         }
     });
@@ -75,7 +75,7 @@ export class CalculatorPageComponent implements OnInit {
           },
           error: (err) => {
               console.error('Failed to load session', err);
-              this.error.set(true);
+              this.error.set('Failed to load session');
               this.loading.set(false);
           }
       });
@@ -106,14 +106,14 @@ export class CalculatorPageComponent implements OnInit {
       forkJoin(downloads).subscribe({
           next: (results: any[]) => {
               const files = results.map(res => new File([res.blob], res.fileName, { type: 'application/octet-stream' }));
+              const colors = items.map(i => i.colorCode || 'Black');
               
               if (this.uploadForm) {
-                  this.uploadForm.setFiles(files);
+                  this.uploadForm.setFiles(files, colors);
                   this.uploadForm.patchSettings(session);
                   
                   // Also restore colors? 
-                  // setFiles inits with 'Black'. We need to update them if they differ.
-                  // items has colorCode.
+                  // setFiles inits with correct colors now.
                   setTimeout(() => {
                       if (this.uploadForm) {
                            items.forEach((item, index) => {
@@ -122,7 +122,11 @@ export class CalculatorPageComponent implements OnInit {
                                if (item.colorCode) {
                                    this.uploadForm.updateItemColor(index, item.colorCode);
                                }
+                               if (item.quantity) {
+                                   this.uploadForm.updateItemQuantityAtIndex(index, item.quantity);
+                               }
                            });
+                           this.uploadForm.updateItemIdsByIndex(items.map(i => i.id));
                       }
                   });
               }
@@ -141,7 +145,7 @@ export class CalculatorPageComponent implements OnInit {
     this.currentRequest = req;
     this.loading.set(true);
     this.uploadProgress.set(0);
-    this.error.set(false);
+    this.error.set(null);
     this.result.set(null);
     this.orderSuccess.set(false);
 
@@ -157,26 +161,45 @@ export class CalculatorPageComponent implements OnInit {
         if (typeof event === 'number') {
             this.uploadProgress.set(event);
         } else {
-            // It's the result
+            // It's the result (partial or final)
             const res = event as QuoteResult;
             this.result.set(res);
-            this.loading.set(false);
-            this.uploadProgress.set(100);
-            this.step.set('quote');
+            
+            // Show result immediately if not already showing
+            if (this.step() !== 'quote') {
+                this.step.set('quote');
+            }
+
+            // Sync IDs back to upload form for future updates
+            if (this.uploadForm) {
+                this.uploadForm.updateItemIdsByIndex(res.items.map(i => i.id));
+            }
 
             // Update URL with session ID without reloading
             if (res.sessionId) {
-                this.router.navigate([], {
-                    relativeTo: this.route,
-                    queryParams: { session: res.sessionId },
-                    queryParamsHandling: 'merge', // merge with existing params like 'mode' if any
-                    replaceUrl: true // prevent cluttering history, or false if we want back button to work. replaceUrl seems safer for "state update"
-                });
+                // Check if we need to update URL to avoid redundant navigations
+                const currentSession = this.route.snapshot.queryParamMap.get('session');
+                if (currentSession !== res.sessionId) {
+                    this.router.navigate([], {
+                        relativeTo: this.route,
+                        queryParams: { session: res.sessionId },
+                        queryParamsHandling: 'merge', 
+                        replaceUrl: true
+                    });
+                }
             }
         }
       },
-      error: () => {
-        this.error.set(true);
+      complete: () => {
+          this.loading.set(false);
+          this.uploadProgress.set(100);
+      },
+      error: (err) => {
+        if (typeof err === 'string') {
+             this.error.set(err);
+        } else {
+             this.error.set('GENERIC');
+        }
         this.loading.set(false);
       }
     });
@@ -196,10 +219,10 @@ export class CalculatorPageComponent implements OnInit {
     this.step.set('quote');
   }
 
-  onItemChange(event: {id?: string, fileName: string, quantity: number}) {
+  onItemChange(event: {id?: string, fileName: string, quantity: number, index: number}) {
       // 1. Update local form for consistency (UI feedback)
       if (this.uploadForm) {
-          this.uploadForm.updateItemQuantityByName(event.fileName, event.quantity);
+          this.uploadForm.updateItemQuantityAtIndex(event.index, event.quantity);
       }
       
       // 2. Update backend session if ID exists
@@ -211,6 +234,43 @@ export class CalculatorPageComponent implements OnInit {
       }
   }
 
+  onItemRemoved(event: {index: number, id?: string}) {
+      // 1. Update local result if exists to keep UI in sync
+      const currentRes = this.result();
+      if (currentRes) {
+          const updatedItems = [...currentRes.items];
+          updatedItems.splice(event.index, 1);
+          
+          // Recalculate totals locally for immediate feedback
+          let totalTime = 0;
+          let totalWeight = 0;
+          let itemsPrice = 0;
+          
+          updatedItems.forEach(i => {
+              totalTime += i.unitTime * i.quantity;
+              totalWeight += i.unitWeight * i.quantity;
+              itemsPrice += i.unitPrice * i.quantity;
+          });
+
+          this.result.set({
+              ...currentRes,
+              items: updatedItems,
+              totalPrice: Math.round((itemsPrice + currentRes.setupCost) * 100) / 100,
+              totalTimeHours: Math.floor(totalTime / 3600),
+              totalTimeMinutes: Math.ceil((totalTime % 3600) / 60),
+              totalWeight: Math.ceil(totalWeight)
+          });
+      }
+
+      // 2. Delete from backend if ID exists
+      if (event.id && currentRes?.sessionId) {
+          this.estimator.deleteLineItem(currentRes.sessionId, event.id).subscribe({
+              next: () => console.log('Line item deleted from backend'),
+              error: (err) => console.error('Failed to delete line item', err)
+          });
+      }
+  }
+
   onSubmitOrder(orderData: any) {
     console.log('Order Submitted:', orderData);
     this.orderSuccess.set(true);
@@ -256,4 +316,12 @@ export class CalculatorPageComponent implements OnInit {
 
     this.router.navigate(['/contact']);
   }
+
+  setMode(mode: 'easy' | 'advanced') {
+    const path = mode === 'easy' ? 'basic' : 'advanced';
+    this.router.navigate(['../', path], { 
+      relativeTo: this.route,
+      queryParamsHandling: 'merge'
+    });
+  }
 }

frontend/src/app/features/calculator/components/quote-result/quote-result.component.html

@@ -21,7 +21,7 @@
   </div>
 
   <div class="setup-note">
-    <small>{{ 'CALC.SETUP_NOTE' | translate:{cost: (result().setupCost | currency:result().currency)} }}</small>
+    <small>* Include {{ result().setupCost | currency:result().currency }} Setup Cost</small>
   </div>
 
   @if (result().notes) {
@@ -35,28 +35,45 @@
   
   <!-- Detailed Items List (NOW ON BOTTOM) -->
   <div class="items-list">
-    @for (item of items(); track item.fileName; let i = $index) {
-      <div class="item-row">
+    @for (item of items(); track item; let i = $index) {
+      <div class="item-row" [class.has-error]="item.error">
         <div class="item-info">
           <span class="file-name">{{ item.fileName }}</span>
-          <span class="file-details">
-             {{ (item.unitTime / 3600) | number:'1.1-1' }}h | {{ item.unitWeight | number:'1.0-0' }}g
-          </span>
+          @if (item.error) {
+            <span class="file-error">{{ 'CALC.ERROR_' + item.error | translate }}</span>
+          } @else if (item.status === 'pending') {
+            <span class="file-details pending">
+                <div class="spinner-mini"></div> Analisi...
+            </span>
+          } @else {
+            <span class="file-details">
+                <span class="color-badge" [title]="item.color" [style.background-color]="getColorHex(item.color!)"></span>
+                {{ (item.unitTime / 3600) | number:'1.1-1' }}h | {{ item.unitWeight | number:'1.0-0' }}g
+            </span>
+          }
         </div>
         
         <div class="item-controls">
-            <div class="qty-control">
-                <label>{{ 'CHECKOUT.QTY' | translate }}:</label>
-                <input 
-                    type="number" 
-                    min="1" 
-                    [ngModel]="item.quantity" 
-                    (ngModelChange)="updateQuantity(i, $event)"
-                    class="qty-input">
-            </div>
-            <div class="item-price">
-                {{ (item.unitPrice * item.quantity) | currency:result().currency }}
-            </div>
+            @if (!item.error) {
+                <div class="qty-control">
+                    <label>Qtà:</label>
+                    <input 
+                        type="number" 
+                        min="1" 
+                        [ngModel]="item.quantity" 
+                        (ngModelChange)="updateQuantity(i, $event)"
+                        class="qty-input">
+                </div>
+                <div class="item-price">
+                    {{ (item.unitPrice * item.quantity) | currency:result().currency }}
+                </div>
+            } @else if (item.status === 'pending') {
+                 <div class="item-price pending">
+                    <div class="spinner-mini"></div>
+                 </div>
+            } @else {
+                <div class="item-price error">-</div>
+            }
         </div>
       </div>
     }

frontend/src/app/features/calculator/components/quote-result/quote-result.component.scss

@@ -21,6 +21,11 @@
     background: var(--color-neutral-50);
     border-radius: var(--radius-md);
     border: 1px solid var(--color-border);
+    
+    &.has-error {
+        border-color: #ef4444;
+        background: #fef2f2;
+    }
 }
 
 .item-info {
@@ -31,7 +36,21 @@
 }
 
 .file-name { font-weight: 500; font-size: 0.9rem; color: var(--color-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.file-details { font-size: 0.8rem; color: var(--color-text-muted); }
+.file-details { 
+    font-size: 0.8rem; 
+    color: var(--color-text-muted); 
+    display: flex;
+    align-items: center;
+    gap: var(--space-2);
+}
+.color-badge {
+    width: 10px;
+    height: 10px;
+    border-radius: 50%;
+    border: 1px solid var(--color-border);
+    display: inline-block;
+}
+.file-error { font-size: 0.8rem; color: #ef4444; font-weight: 500; }
 
 .item-controls {
     display: flex;

frontend/src/app/features/calculator/components/quote-result/quote-result.component.ts

@@ -6,6 +6,7 @@ import { AppCardComponent } from '../../../../shared/components/app-card/app-car
 import { AppButtonComponent } from '../../../../shared/components/app-button/app-button.component';
 import { SummaryCardComponent } from '../../../../shared/components/summary-card/summary-card.component';
 import { QuoteResult, QuoteItem } from '../../services/quote-estimator.service';
+import { getColorHex } from '../../../../core/constants/colors.const';
 
 @Component({
   selector: 'app-quote-result',
@@ -18,11 +19,13 @@ export class QuoteResultComponent {
   result = input.required<QuoteResult>();
   consult = output<void>();
   proceed = output<void>();
-  itemChange = output<{id?: string, fileName: string, quantity: number}>();
+  itemChange = output<{id?: string, fileName: string, quantity: number, index: number}>();
 
   // Local mutable state for items to handle quantity changes
   items = signal<QuoteItem[]>([]);
 
+  getColorHex = getColorHex;
+
   constructor() {
       effect(() => {
           // Initialize local items when result inputs change
@@ -44,7 +47,8 @@ export class QuoteResultComponent {
       this.itemChange.emit({
           id: this.items()[index].id,
           fileName: this.items()[index].fileName,
-          quantity: qty
+          quantity: qty,
+          index: index
       });
   }
 
@@ -57,9 +61,11 @@ export class QuoteResultComponent {
       let weight = 0;
       
       currentItems.forEach(i => {
-          price += i.unitPrice * i.quantity;
-          time += i.unitTime * i.quantity;
-          weight += i.unitWeight * i.quantity;
+          if (i.status === 'done' && !i.error) {
+            price += i.unitPrice * i.quantity;
+            time += i.unitTime * i.quantity;
+            weight += i.unitWeight * i.quantity;
+          }
       });
       
       const hours = Math.floor(time / 3600);

frontend/src/app/features/calculator/components/upload-form/upload-form.component.html

@@ -25,7 +25,7 @@
     <!-- New File List with Details -->
     @if (items().length > 0) {
         <div class="items-grid">
-            @for (item of items(); track item.file.name; let i = $index) {
+            @for (item of items(); track item; let i = $index) {
                 <div class="file-card" [class.active]="item.file === selectedFile()" (click)="selectFile(item.file)">
                     <div class="card-header">
                         <span class="file-name" [title]="item.file.name">{{ item.file.name }}</span>
@@ -34,7 +34,7 @@
                     <div class="card-body">
                         <div class="card-controls">
                              <div class="qty-group">
-                                <label>{{ 'CALC.QTY_SHORT' | translate }}</label>
+                                <label>QTÀ</label>
                                 <input 
                                     type="number" 
                                     min="1" 
@@ -45,7 +45,7 @@
                             </div>
 
                             <div class="color-group">
-                                <label>{{ 'CALC.COLOR_LABEL' | translate }}</label>
+                                <label>COLORE</label>
                                 <app-color-selector 
                                     [selectedColor]="item.color" 
                                     [variants]="currentMaterialVariants()"
@@ -134,7 +134,7 @@
   <app-input
     formControlName="notes"
     [label]="'CALC.NOTES' | translate"
-    [placeholder]="'CALC.NOTES_PLACEHOLDER' | translate"
+    placeholder="Istruzioni specifiche..."
   ></app-input>
 
   <div class="actions">
@@ -151,7 +151,7 @@
       type="submit" 
       [disabled]="items().length === 0 || loading()" 
       [fullWidth]="true">
-      {{ loading() ? (uploadProgress() < 100 ? ('CALC.UPLOADING' | translate) : ('CALC.PROCESSING' | translate)) : ('CALC.CALCULATE' | translate) }}
+      {{ loading() ? (uploadProgress() < 100 ? 'Uploading...' : 'Processing...') : ('CALC.CALCULATE' | translate) }}
     </app-button>
   </div>
 </form>

frontend/src/app/features/calculator/components/upload-form/upload-form.component.ts

@@ -12,6 +12,7 @@ import { QuoteRequest, QuoteEstimatorService, OptionsResponse, SimpleOption, Mat
 import { getColorHex } from '../../../../core/constants/colors.const';
 
 interface FormItem {
+    id?: string;
     file: File;
     quantity: number;
     color: string;
@@ -29,6 +30,7 @@ export class UploadFormComponent implements OnInit {
   loading = input<boolean>(false);
   uploadProgress = input<number>(0);
   submitRequest = output<QuoteRequest>();
+  itemRemoved = output<{index: number, id?: string}>();
 
   private estimator = inject(QuoteEstimatorService);
   private fb = inject(FormBuilder);
@@ -75,7 +77,7 @@ export class UploadFormComponent implements OnInit {
       layerHeight: [0.2, [Validators.min(0.05), Validators.max(1.0)]],
       nozzleDiameter: [0.4, Validators.required],
       infillPattern: ['grid'],
-      supportEnabled: [false]
+      supportEnabled: [true]
     });
     
     // Listen to material changes to update variants
@@ -112,7 +114,9 @@ export class UploadFormComponent implements OnInit {
   private setDefaults() {
       // Set Defaults if available
       if (this.materials().length > 0 && !this.form.get('material')?.value) {
-           this.form.get('material')?.setValue(this.materials()[0].value);
+           // Prefer PLA Basic, otherwise first available
+           const pla = this.materials().find(m => m.value === 'pla_basic');
+           this.form.get('material')?.setValue(pla ? pla.value : this.materials()[0].value);
       }
       if (this.qualities().length > 0 && !this.form.get('quality')?.value) {
           // Try to find 'standard' or use first
@@ -176,6 +180,37 @@ export class UploadFormComponent implements OnInit {
       });
   }
 
+  updateItemQuantityAtIndex(index: number, quantity: number) {
+      this.items.update(current => {
+          const updated = [...current];
+          if (updated[index]) {
+              updated[index] = { ...updated[index], quantity };
+          }
+          return updated;
+      });
+  }
+
+  updateItemIds(itemsWithIds: { fileName: string, id: string }[]) {
+      this.items.update(current => {
+          return current.map(item => {
+              const match = itemsWithIds.find(i => i.fileName === item.file.name && !i.id); // This matching is weak
+              // Better: matching should be based on index if we trust order
+              return item;
+          });
+      });
+  }
+
+  updateItemIdsByIndex(ids: (string | undefined)[]) {
+      this.items.update(current => {
+          return current.map((item, i) => {
+              if (ids[i]) {
+                  return { ...item, id: ids[i] };
+              }
+              return item;
+          });
+      });
+  }
+
   selectFile(file: File) {
       if (this.selectedFile() === file) {
           // toggle off? no, keep active
@@ -206,11 +241,7 @@ export class UploadFormComponent implements OnInit {
       let val = parseInt(input.value, 10);
       if (isNaN(val) || val < 1) val = 1;
       
-      this.items.update(current => {
-          const updated = [...current];
-          updated[index] = { ...updated[index], quantity: val };
-          return updated;
-      });
+      this.updateItemQuantityAtIndex(index, val);
   }
 
   updateItemColor(index: number, newColor: string) {
@@ -222,6 +253,7 @@ export class UploadFormComponent implements OnInit {
   }
 
   removeItem(index: number) {
+      const itemToRemove = this.items()[index];
       this.items.update(current => {
           const updated = [...current];
           const removed = updated.splice(index, 1)[0];
@@ -230,14 +262,15 @@ export class UploadFormComponent implements OnInit {
           }
           return updated;
       });
+      this.itemRemoved.emit({ index, id: itemToRemove.id });
   }
 
-  setFiles(files: File[]) {
+  setFiles(files: File[], colors?: string[]) {
       const validItems: FormItem[] = [];
-      for (const file of files) {
-          // Default color is Black or derive from somewhere if possible, but here we just init
-          validItems.push({ file, quantity: 1, color: 'Black' });
-      }
+      files.forEach((file, i) => {
+          const color = (colors && colors[i]) ? colors[i] : 'Black';
+          validItems.push({ file, quantity: 1, color: color });
+      });
 
       if (validItems.length > 0) {
           this.items.set(validItems);

frontend/src/app/features/calculator/components/user-details/user-details.component.html

@@ -9,8 +9,8 @@
             <div class="col-md-6">
               <app-input 
                 formControlName="name"
-                [label]="'USER_DETAILS.NAME' | translate" 
-                [placeholder]="'USER_DETAILS.NAME_PLACEHOLDER' | translate"
+                label="USER_DETAILS.NAME" 
+                placeholder="USER_DETAILS.NAME_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('name')?.invalid && form.get('name')?.touched ? ('COMMON.REQUIRED' | translate) : null">
               </app-input>
@@ -18,8 +18,8 @@
             <div class="col-md-6">
               <app-input 
                 formControlName="surname"
-                [label]="'USER_DETAILS.SURNAME' | translate" 
-                [placeholder]="'USER_DETAILS.SURNAME_PLACEHOLDER' | translate"
+                label="USER_DETAILS.SURNAME" 
+                placeholder="USER_DETAILS.SURNAME_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('surname')?.invalid && form.get('surname')?.touched ? ('COMMON.REQUIRED' | translate) : null">
               </app-input>
@@ -31,9 +31,9 @@
             <div class="col-md-6">
               <app-input 
                 formControlName="email"
-                [label]="'USER_DETAILS.EMAIL' | translate" 
+                label="USER_DETAILS.EMAIL" 
                 type="email"
-                [placeholder]="'USER_DETAILS.EMAIL_PLACEHOLDER' | translate"
+                placeholder="USER_DETAILS.EMAIL_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('email')?.invalid && form.get('email')?.touched ? ('COMMON.INVALID_EMAIL' | translate) : null">
               </app-input>
@@ -41,9 +41,9 @@
             <div class="col-md-6">
               <app-input 
                 formControlName="phone"
-                [label]="'USER_DETAILS.PHONE' | translate" 
+                label="USER_DETAILS.PHONE" 
                 type="tel"
-                [placeholder]="'USER_DETAILS.PHONE_PLACEHOLDER' | translate"
+                placeholder="USER_DETAILS.PHONE_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('phone')?.invalid && form.get('phone')?.touched ? ('COMMON.REQUIRED' | translate) : null">
               </app-input>
@@ -53,8 +53,8 @@
           <!-- Address -->
           <app-input 
             formControlName="address"
-            [label]="'USER_DETAILS.ADDRESS' | translate" 
-            [placeholder]="'USER_DETAILS.ADDRESS_PLACEHOLDER' | translate"
+            label="USER_DETAILS.ADDRESS" 
+            placeholder="USER_DETAILS.ADDRESS_PLACEHOLDER"
             [required]="true"
             [error]="form.get('address')?.invalid && form.get('address')?.touched ? ('COMMON.REQUIRED' | translate) : null">
           </app-input>
@@ -64,8 +64,8 @@
             <div class="col-md-4">
               <app-input 
                 formControlName="zip"
-                [label]="'USER_DETAILS.ZIP' | translate" 
-                [placeholder]="'USER_DETAILS.ZIP_PLACEHOLDER' | translate"
+                label="USER_DETAILS.ZIP" 
+                placeholder="USER_DETAILS.ZIP_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('zip')?.invalid && form.get('zip')?.touched ? ('COMMON.REQUIRED' | translate) : null">
               </app-input>
@@ -73,8 +73,8 @@
             <div class="col-md-8">
               <app-input 
                 formControlName="city"
-                [label]="'USER_DETAILS.CITY' | translate" 
-                [placeholder]="'USER_DETAILS.CITY_PLACEHOLDER' | translate"
+                label="USER_DETAILS.CITY" 
+                placeholder="USER_DETAILS.CITY_PLACEHOLDER"
                 [required]="true"
                 [error]="form.get('city')?.invalid && form.get('city')?.touched ? ('COMMON.REQUIRED' | translate) : null">
               </app-input>

frontend/src/app/features/calculator/services/quote-estimator.service.ts

@@ -26,6 +26,8 @@ export interface QuoteItem {
   quantity: number;
   material?: string;
   color?: string;
+  error?: string;
+  status: 'pending' | 'done' | 'error';
 }
 
 export interface QuoteResult {
@@ -138,6 +140,13 @@ export class QuoteEstimatorService {
       return this.http.patch(`${environment.apiUrl}/api/quote-sessions/line-items/${lineItemId}`, changes, { headers });
   }
 
+  deleteLineItem(sessionId: string, lineItemId: string): Observable<any> {
+      const headers: any = {};
+      // @ts-ignore
+      if (environment.basicAuth) headers['Authorization'] = 'Basic ' + btoa(environment.basicAuth);
+      return this.http.delete(`${environment.apiUrl}/api/quote-sessions/${sessionId}/line-items/${lineItemId}`, { headers });
+  }
+
   createOrder(sessionId: string, orderDetails: any): Observable<any> {
       const headers: any = {};
       // @ts-ignore
@@ -162,13 +171,6 @@ export class QuoteEstimatorService {
       });
   }
   
-  getTwintPayment(orderId: string): Observable<any> {
-      const headers: any = {};
-      // @ts-ignore
-      if (environment.basicAuth) headers['Authorization'] = 'Basic ' + btoa(environment.basicAuth);
-      return this.http.get(`${environment.apiUrl}/api/orders/${orderId}/twint`, { headers });
-  }
-  
   calculate(request: QuoteRequest): Observable<number | QuoteResult> {
     console.log('QuoteEstimatorService: Calculating quote...', request);
     if (request.items.length === 0) {
@@ -187,18 +189,74 @@ export class QuoteEstimatorService {
                 const sessionId = sessionRes.id;
                 const sessionSetupCost = sessionRes.setupCostChf || 0;
                 
+                // Initialize items in pending state
+                const currentItems: QuoteItem[] = request.items.map(item => ({
+                    fileName: item.file.name,
+                    unitPrice: 0,
+                    unitTime: 0,
+                    unitWeight: 0,
+                    quantity: item.quantity,
+                    status: 'pending',
+                    color: item.color || 'White' // Default color for UI
+                }));
+
+                // Emit initial state
+                const initialResult: QuoteResult = {
+                    sessionId: sessionId,
+                    items: [...currentItems],
+                    setupCost: sessionSetupCost,
+                    currency: 'CHF',
+                    totalPrice: 0, // Will be calculated dynamically
+                    totalTimeHours: 0,
+                    totalTimeMinutes: 0,
+                    totalWeight: 0,
+                    notes: request.notes
+                };
+                observer.next(initialResult);
+                
                 // 2. Upload files to this session
                 const totalItems = request.items.length;
                 const allProgress: number[] = new Array(totalItems).fill(0);
-                const finalResponses: any[] = []; 
                 let completedRequests = 0;
 
-                const checkCompletion = () => {
+                const emitUpdate = () => {
                      const avg = Math.round(allProgress.reduce((a, b) => a + b, 0) / totalItems);
                      observer.next(avg);
                      
+                     // Helper to calculate totals for current items
+                     let grandTotal = 0;
+                     let totalTime = 0;
+                     let totalWeight = 0;
+                     let validCount = 0;
+                     
+                     currentItems.forEach(item => {
+                         if (item.status === 'done') {
+                             grandTotal += item.unitPrice * item.quantity;
+                             totalTime += item.unitTime * item.quantity;
+                             totalWeight += item.unitWeight * item.quantity;
+                             validCount++;
+                         }
+                     });
+
+                     if (validCount > 0) {
+                         grandTotal += sessionSetupCost;
+                     }
+
+                     const result: QuoteResult = {
+                         sessionId: sessionId,
+                         items: [...currentItems], // Create copy to trigger change detection
+                         setupCost: sessionSetupCost,
+                         currency: 'CHF',
+                         totalPrice: Math.round(grandTotal * 100) / 100,
+                         totalTimeHours: Math.floor(totalTime / 3600),
+                         totalTimeMinutes: Math.ceil((totalTime % 3600) / 60),
+                         totalWeight: Math.ceil(totalWeight),
+                         notes: request.notes
+                     };
+                     observer.next(result);
+
                      if (completedRequests === totalItems) {
-                         finalize(finalResponses, sessionSetupCost, sessionId);
+                         observer.complete();
                      }
                 };
 
@@ -228,20 +286,42 @@ export class QuoteEstimatorService {
                      }).subscribe({
                         next: (event) => {
                             if (event.type === HttpEventType.UploadProgress && event.total) {
-                                allProgress[index] = Math.round((100 * event.loaded) / event.total);
-                                checkCompletion();
+                                allProgress[index] = Math.round((70 * event.loaded) / event.total); // Upload is 70% of "progress" for user perception
+                                emitUpdate();
                             } else if (event.type === HttpEventType.Response) { 
                                  allProgress[index] = 100;
-                                 finalResponses[index] = { ...event.body, success: true, fileName: item.file.name, originalQty: item.quantity, originalItem: item };
+                                 const resBody = event.body as any;
+                                 
+                                 // Update item in list
+                                 currentItems[index] = {
+                                     id: resBody.id,
+                                     fileName: resBody.originalFilename, // use returned filename
+                                     unitPrice: resBody.unitPriceChf || 0,
+                                     unitTime: resBody.printTimeSeconds || 0,
+                                     unitWeight: resBody.materialGrams || 0,
+                                     quantity: item.quantity, // Keep original quantity
+                                     material: request.material, 
+                                     color: item.color || 'White',
+                                     status: 'done'
+                                 };
+
                                  completedRequests++;
-                                 checkCompletion();
+                                 emitUpdate();
                             }
                         },
                         error: (err) => {
                             console.error('Item upload failed', err);
-                            finalResponses[index] = { success: false, fileName: item.file.name };
+                            const errorMsg = err.error?.code === 'VIRUS_DETECTED' ? 'VIRUS_DETECTED' : 'UPLOAD_FAILED';
+                            
+                            currentItems[index] = {
+                                ...currentItems[index],
+                                status: 'error',
+                                error: errorMsg
+                            };
+                            
+                            allProgress[index] = 100; // Mark as done despite error
                             completedRequests++;
-                            checkCompletion();
+                            emitUpdate();
                         }
                     });
                 });
@@ -251,62 +331,6 @@ export class QuoteEstimatorService {
                 observer.error('Could not initialize quote session');
             }
         });
-
-        const finalize = (responses: any[], setupCost: number, sessionId: string) => {
-             observer.next(100); 
-             const items: QuoteItem[] = [];
-             let grandTotal = 0;
-             let totalTime = 0;
-             let totalWeight = 0;
-             let validCount = 0;
-
-             responses.forEach((res, idx) => {
-                 if (!res || !res.success) return;
-                 validCount++;
-                 
-                 const unitPrice = res.unitPriceChf || 0;
-                 const quantity = res.originalQty || 1;
-                 
-                 items.push({
-                     id: res.id,
-                     fileName: res.fileName,
-                     unitPrice: unitPrice,
-                     unitTime: res.printTimeSeconds || 0,
-                     unitWeight: res.materialGrams || 0,
-                     quantity: quantity,
-                     material: request.material,
-                     color: res.originalItem.color || 'Default'
-                     // Store ID if needed for updates? QuoteItem interface might need update
-                     // or we map it in component
-                 });
-                 
-                 grandTotal += unitPrice * quantity;
-                 totalTime += (res.printTimeSeconds || 0) * quantity;
-                 totalWeight += (res.materialGrams || 0) * quantity;
-             });
-
-             if (validCount === 0) {
-                 observer.error('All calculations failed.');
-                 return;
-             }
-             
-             grandTotal += setupCost;
-
-             const result: QuoteResult = {
-                 sessionId: sessionId,
-                 items,
-                 setupCost: setupCost,
-                 currency: 'CHF',
-                 totalPrice: Math.round(grandTotal * 100) / 100,
-                 totalTimeHours: Math.floor(totalTime / 3600),
-                 totalTimeMinutes: Math.ceil((totalTime % 3600) / 60),
-                 totalWeight: Math.ceil(totalWeight),
-                 notes: request.notes
-             };
-             
-             observer.next(result);
-             observer.complete();
-        };
     });
   }
 
@@ -360,7 +384,8 @@ export class QuoteEstimatorService {
               material: session.materialCode, // Assumption: session has one material for all? or items have it? 
               // Backend model QuoteSession has materialCode. 
               // But line items might have different colors. 
-              color: item.colorCode
+              color: item.colorCode,
+              status: 'done'
           })),
           setupCost: session.setupCostChf,
           currency: 'CHF', // Fixed for now

frontend/src/app/features/checkout/checkout.component.html

@@ -1,161 +1,154 @@
-<div class="checkout-page">
-  <div class="container hero">
-    <h1 class="section-title">{{ 'CHECKOUT.TITLE' | translate }}</h1>
-  </div>
+<div class="container hero">
+  <h1>{{ 'CHECKOUT.TITLE' | translate }}</h1>
+  <p class="subtitle">{{ 'CHECKOUT.SUBTITLE' | translate }}</p>
+</div>
 
-  <div class="container">
-    <div class="checkout-layout">
+<div class="container">
+  <div class="checkout-layout">
     
-      <!-- LEFT COLUMN: Form -->
-      <div class="checkout-form-section">
-        <!-- Error Message -->
-        <div *ngIf="error" class="error-message">
-          {{ error }}
-        </div>
+    <!-- LEFT COLUMN: Form -->
+    <div class="checkout-form-section">
+      <!-- Error Message -->
+      <div *ngIf="error" class="error-message">
+        {{ error }}
+      </div>
 
-        <form [formGroup]="checkoutForm" (ngSubmit)="onSubmit()" *ngIf="!error">
+      <form [formGroup]="checkoutForm" (ngSubmit)="onSubmit()" *ngIf="!error">
         
-          <!-- Contact Info Card -->
-          <app-card class="mb-6">
-            <div class="card-header-simple">
-              <h3>{{ 'CHECKOUT.CONTACT_INFO' | translate }}</h3>
+        <!-- Contact Info Card -->
+        <app-card class="mb-6">
+          <div class="form-row">
+            <app-input formControlName="email" type="email" [label]="'CHECKOUT.EMAIL' | translate" [required]="true" [error]="checkoutForm.get('email')?.hasError('email') ? 'Invalid email' : null"></app-input>
+            <app-input formControlName="phone" type="tel" [label]="'CHECKOUT.PHONE' | translate" [required]="true"></app-input>
+          </div>
+
+          <div class="user-type-selector">
+            <div class="type-option" [class.selected]="!isCompany" (click)="setCustomerType(false)">
+              {{ 'CHECKOUT.PRIVATE' | translate }}
             </div>
-            <div class="form-row">
-              <app-input formControlName="email" type="email" [label]="'CHECKOUT.EMAIL' | translate" [required]="true" [error]="checkoutForm.get('email')?.hasError('email') ? ('CHECKOUT.INVALID_EMAIL' | translate) : null"></app-input>
-              <app-input formControlName="phone" type="tel" [label]="'CHECKOUT.PHONE' | translate" [required]="true"></app-input>
+            <div class="type-option" [class.selected]="isCompany" (click)="setCustomerType(true)">
+              {{ 'CHECKOUT.COMPANY' | translate }}
             </div>
-          </app-card>
+          </div>
 
-          <!-- Billing Address Card -->
-          <app-card class="mb-6">
-            <div class="card-header-simple">
-              <h3>{{ 'CHECKOUT.BILLING_ADDR' | translate }}</h3>
-            </div>
-            <div formGroupName="billingAddress">
-              
-              <!-- Private Person Fields -->
-              <div *ngIf="!isCompany" class="form-row">
+          <div formGroupName="billingAddress">
+            <div *ngIf="isCompany" class="company-fields">
+              <app-input formControlName="companyName" [label]="'CHECKOUT.COMPANY_NAME' | translate" [required]="true"></app-input>
+              <div class="form-row no-margin">
                 <app-input formControlName="firstName" [label]="'CHECKOUT.FIRST_NAME' | translate" [required]="true"></app-input>
                 <app-input formControlName="lastName" [label]="'CHECKOUT.LAST_NAME' | translate" [required]="true"></app-input>
               </div>
-
-              <!-- Company Fields -->
-              <div *ngIf="isCompany" class="company-fields mb-4">
-                <app-input formControlName="companyName" [label]="'CHECKOUT.COMPANY_NAME' | translate" [required]="true" [placeholder]="'CONTACT.PLACEHOLDER_COMPANY' | translate"></app-input>
-                <app-input formControlName="referencePerson" [label]="'CONTACT.REF_PERSON' | translate" [required]="true" [placeholder]="'CONTACT.PLACEHOLDER_REF_PERSON' | translate"></app-input>
-              </div>
-
-              <!-- User Type Selector -->
-              <div class="user-type-selector">
-                <div class="type-option" [class.selected]="!isCompany" (click)="setCustomerType(false)">
-                  {{ 'CONTACT.TYPE_PRIVATE' | translate }}
-                </div>
-                <div class="type-option" [class.selected]="isCompany" (click)="setCustomerType(true)">
-                  {{ 'CONTACT.TYPE_COMPANY' | translate }}
-                </div>
-              </div>
-              
-              <app-input formControlName="addressLine1" [label]="'CHECKOUT.ADDRESS_1' | translate" [required]="true"></app-input>
-              <app-input formControlName="addressLine2" [label]="'CHECKOUT.ADDRESS_2' | translate"></app-input>
-
-              <div class="form-row three-cols">
-                <app-input formControlName="zip" [label]="'CHECKOUT.ZIP' | translate" [required]="true"></app-input>
-                <app-input formControlName="city" [label]="'CHECKOUT.CITY' | translate" class="city-field" [required]="true"></app-input>
-                <app-input formControlName="countryCode" [label]="'CHECKOUT.COUNTRY' | translate" [disabled]="true" [required]="true"></app-input>
-              </div>
             </div>
-          </app-card>
             
-          <!-- Shipping Option -->
-          <div class="shipping-option">
-            <label class="checkbox-container">
-              <input type="checkbox" formControlName="shippingSameAsBilling">
-              <span class="checkmark"></span>
-              {{ 'CHECKOUT.SHIPPING_SAME' | translate }}
-            </label>
-          </div>
-
-          <!-- Shipping Address Card (Conditional) -->
-          <app-card *ngIf="!checkoutForm.get('shippingSameAsBilling')?.value" class="mb-6">
-             <div class="card-header-simple">
-              <h3>{{ 'CHECKOUT.SHIPPING_ADDR' | translate }}</h3>
-            </div>
-            <div formGroupName="shippingAddress">
-               <div class="form-row">
-                <app-input formControlName="firstName" [label]="'CHECKOUT.FIRST_NAME' | translate"></app-input>
-                <app-input formControlName="lastName" [label]="'CHECKOUT.LAST_NAME' | translate"></app-input>
-              </div>
-              
-              <div *ngIf="isCompany" class="company-fields">
-                <app-input formControlName="companyName" [label]="'CHECKOUT.COMPANY_OPTIONAL' | translate"></app-input>
-                <app-input formControlName="referencePerson" [label]="'CHECKOUT.REF_PERSON_OPTIONAL' | translate"></app-input>
-              </div>
-
-              <app-input formControlName="addressLine1" [label]="'CHECKOUT.ADDRESS_1' | translate"></app-input>
-              
-              <div class="form-row three-cols">
-                <app-input formControlName="zip" [label]="'CHECKOUT.ZIP' | translate"></app-input>
-                <app-input formControlName="city" [label]="'CHECKOUT.CITY' | translate" class="city-field"></app-input>
-                <app-input formControlName="countryCode" [label]="'CHECKOUT.COUNTRY' | translate" [disabled]="true"></app-input>
-              </div>
-            </div>
-          </app-card>
-
-          <div class="actions">
-            <app-button type="submit" [disabled]="checkoutForm.invalid || isSubmitting()" [fullWidth]="true">
-              {{ (isSubmitting() ? 'CHECKOUT.PROCESSING' : 'CHECKOUT.PLACE_ORDER') | translate }}
-            </app-button>
-          </div>
-
-        </form>
-      </div>
-
-      <!-- RIGHT COLUMN: Order Summary -->
-      <div class="checkout-summary-section">
-        <app-card class="sticky-card">
-          <div class="card-header-simple">
-            <h3>{{ 'CHECKOUT.SUMMARY_TITLE' | translate }}</h3>
-          </div>
-          
-          <div class="summary-items" *ngIf="quoteSession() as session">
-             <div class="summary-item" *ngFor="let item of session.items">
-               <div class="item-details">
-                 <span class="item-name">{{ item.originalFilename }}</span>
-                 <div class="item-specs">
-                   <span>{{ 'CHECKOUT.QTY' | translate }}: {{ item.quantity }}</span> 
-                   <span *ngIf="item.colorCode" class="color-dot" [style.background-color]="item.colorCode"></span>
-                 </div>
-                 <div class="item-specs-sub">
-                   {{ (item.printTimeSeconds / 3600) | number:'1.1-1' }}h | {{ item.materialGrams | number:'1.0-0' }}g
-                 </div>
-               </div>
-               <div class="item-price">
-                 {{ (item.unitPriceChf * item.quantity) | currency:'CHF' }}
-               </div>
-             </div>
-          </div>
-  
-          <div class="summary-totals" *ngIf="quoteSession() as session">
-            <div class="total-row">
-              <span>{{ 'CHECKOUT.SUBTOTAL' | translate }}</span>
-              <span>{{ session.itemsTotalChf | currency:'CHF' }}</span>
-            </div>
-            <div class="total-row">
-              <span>{{ 'CHECKOUT.SETUP_FEE' | translate }}</span>
-              <span>{{ session.session.setupCostChf | currency:'CHF' }}</span>
-            </div>
-            <div class="total-row">
-              <span>{{ 'CHECKOUT.SHIPPING' | translate }}</span>
-              <span>{{ 9.00 | currency:'CHF' }}</span>
-            </div>
-            <div class="grand-total">
-              <span>{{ 'CHECKOUT.TOTAL' | translate }}</span>
-              <span>{{ (session.grandTotalChf + 9.00) | currency:'CHF' }}</span>
+            <div *ngIf="!isCompany" class="form-row no-margin">
+              <app-input formControlName="firstName" [label]="'CHECKOUT.FIRST_NAME' | translate" [required]="true"></app-input>
+              <app-input formControlName="lastName" [label]="'CHECKOUT.LAST_NAME' | translate" [required]="true"></app-input>
             </div>
           </div>
         </app-card>
-      </div>
 
+        <!-- Billing Address Card -->
+        <app-card class="mb-6">
+          <div class="card-header-simple">
+            <h3>{{ 'CHECKOUT.BILLING_ADDR' | translate }}</h3>
+          </div>
+          <div formGroupName="billingAddress">
+            <app-input formControlName="addressLine1" [label]="'CHECKOUT.ADDRESS_1' | translate" [required]="true"></app-input>
+            <app-input formControlName="addressLine2" [label]="'CHECKOUT.ADDRESS_2' | translate"></app-input>
+
+            <div class="form-row three-cols">
+              <app-input formControlName="zip" [label]="'CHECKOUT.ZIP' | translate" [required]="true"></app-input>
+              <app-input formControlName="city" [label]="'CHECKOUT.CITY' | translate" class="city-field" [required]="true"></app-input>
+              <app-input formControlName="countryCode" [label]="'CHECKOUT.COUNTRY' | translate" [disabled]="true" [required]="true"></app-input>
+            </div>
+          </div>
+        </app-card>
+
+        <!-- Shipping Option -->
+        <div class="shipping-option">
+          <label class="checkbox-container">
+            <input type="checkbox" formControlName="shippingSameAsBilling">
+            <span class="checkmark"></span>
+            {{ 'CHECKOUT.SHIPPING_SAME' | translate }}
+          </label>
+        </div>
+
+        <!-- Shipping Address Card (Conditional) -->
+        <app-card *ngIf="!checkoutForm.get('shippingSameAsBilling')?.value" class="mb-6">
+           <div class="card-header-simple">
+            <h3>{{ 'CHECKOUT.SHIPPING_ADDR' | translate }}</h3>
+          </div>
+          <div formGroupName="shippingAddress">
+             <div class="form-row">
+              <app-input formControlName="firstName" [label]="'CHECKOUT.FIRST_NAME' | translate"></app-input>
+              <app-input formControlName="lastName" [label]="'CHECKOUT.LAST_NAME' | translate"></app-input>
+            </div>
+            
+            <app-input formControlName="companyName" [label]="'CHECKOUT.COMPANY_NAME' | translate"></app-input>
+            <app-input formControlName="addressLine1" [label]="'CHECKOUT.ADDRESS_1' | translate"></app-input>
+            
+            <div class="form-row three-cols">
+              <app-input formControlName="zip" [label]="'CHECKOUT.ZIP' | translate"></app-input>
+              <app-input formControlName="city" [label]="'CHECKOUT.CITY' | translate" class="city-field"></app-input>
+              <app-input formControlName="countryCode" [label]="'CHECKOUT.COUNTRY' | translate" [disabled]="true"></app-input>
+            </div>
+          </div>
+        </app-card>
+
+        <div class="actions">
+          <app-button type="submit" [disabled]="checkoutForm.invalid || isSubmitting()" [fullWidth]="true">
+            {{ (isSubmitting() ? 'CHECKOUT.PROCESSING' : 'CHECKOUT.PLACE_ORDER') | translate }}
+          </app-button>
+        </div>
+
+      </form>
     </div>
+
+    <!-- RIGHT COLUMN: Order Summary -->
+    <div class="checkout-summary-section">
+      <app-card class="sticky-card">
+        <div class="card-header-simple">
+          <h3>{{ 'CHECKOUT.ORDER_SUMMARY' | translate }}</h3>
+        </div>
+        
+        <div class="summary-items" *ngIf="quoteSession() as session">
+           <div class="summary-item" *ngFor="let item of session.items">
+             <div class="item-details">
+               <span class="item-name">{{ item.originalFilename }}</span>
+               <div class="item-specs">
+                 <span>Qty: {{ item.quantity }}</span> 
+                 <span *ngIf="item.colorCode" class="color-dot" [style.background-color]="item.colorCode"></span>
+               </div>
+               <div class="item-specs-sub">
+                 {{ (item.printTimeSeconds / 3600) | number:'1.1-1' }}h | {{ item.materialGrams | number:'1.0-0' }}g
+               </div>
+             </div>
+             <div class="item-price">
+               {{ (item.unitPriceChf * item.quantity) | currency:'CHF' }}
+             </div>
+           </div>
+        </div>
+
+        <div class="summary-totals" *ngIf="quoteSession() as session">
+          <div class="total-row">
+            <span>{{ 'CHECKOUT.SUBTOTAL' | translate }}</span>
+            <span>{{ session.itemsTotalChf | currency:'CHF' }}</span>
+          </div>
+          <div class="total-row">
+            <span>{{ 'CHECKOUT.SETUP_FEE' | translate }}</span>
+            <span>{{ session.session.setupCostChf | currency:'CHF' }}</span>
+          </div>
+          <div class="total-row">
+            <span>{{ 'CHECKOUT.SHIPPING' | translate }}</span>
+            <span>{{ 9.0 | currency:'CHF' }}</span>
+          </div>
+          <div class="grand-total-row">
+            <span>{{ 'CHECKOUT.TOTAL' | translate }}</span>
+            <span>{{ (session.grandTotalChf + 9.0) | currency:'CHF' }}</span>
+          </div>
+        </div>
+      </app-card>
+    </div>
+
   </div>
 </div>

frontend/src/app/features/checkout/checkout.component.scss

@@ -1,16 +1,23 @@
 .hero { 
-  padding: var(--space-8) 0;
+  padding: var(--space-12) 0 var(--space-8); 
   text-align: center; 
 
-  .section-title {
+  h1 {
     font-size: 2.5rem;
     margin-bottom: var(--space-2);
   }
 }
 
+.subtitle { 
+  font-size: 1.125rem; 
+  color: var(--color-text-muted); 
+  max-width: 600px; 
+  margin: 0 auto; 
+}
+
 .checkout-layout {
   display: grid;
-  grid-template-columns: 1fr 420px;
+  grid-template-columns: 1fr 400px;
   gap: var(--space-8);
   align-items: start;
   margin-bottom: var(--space-12);
@@ -70,7 +77,7 @@
   background-color: var(--color-neutral-100);
   border-radius: var(--radius-md);
   padding: 4px;
-  margin: var(--space-6) 0;
+  margin-bottom: var(--space-4);
   gap: 4px;
   width: 100%;
   max-width: 400px;
@@ -188,7 +195,6 @@
   max-height: 450px;
   overflow-y: auto;
   padding-right: var(--space-2);
-  padding-top: var(--space-2);
 
   &::-webkit-scrollbar {
     width: 4px;
@@ -254,19 +260,19 @@
 
 .summary-totals {
   background: var(--color-neutral-100);
-  padding: var(--space-4);
+  padding: var(--space-6);
   border-radius: var(--radius-md);
-  margin-top: var(--space-6);
+  margin-top: var(--space-4);
 
   .total-row {
     display: flex;
     justify-content: space-between;
     margin-bottom: var(--space-2);
     font-size: 0.95rem;
-    color: var(--color-text);
+    color: var(--color-text-muted);
   }
 
-  .grand-total {
+  .grand-total-row {
     display: flex;
     justify-content: space-between;
     color: var(--color-text);
@@ -297,3 +303,4 @@
 }
 
 .mb-6 { margin-bottom: var(--space-6); }
+

frontend/src/app/features/checkout/checkout.component.ts

@@ -20,7 +20,7 @@ import { AppCardComponent } from '../../shared/components/app-card/app-card.comp
     AppCardComponent
   ],
   templateUrl: './checkout.component.html',
-  styleUrls: ['./checkout.component.scss']
+  styleUrl: './checkout.component.scss'
 })
 export class CheckoutComponent implements OnInit {
   private fb = inject(FormBuilder);
@@ -47,7 +47,6 @@ export class CheckoutComponent implements OnInit {
         firstName: ['', Validators.required],
         lastName: ['', Validators.required],
         companyName: [''], 
-        referencePerson: [''],
         addressLine1: ['', Validators.required],
         addressLine2: [''],
         zip: ['', Validators.required],
@@ -59,7 +58,6 @@ export class CheckoutComponent implements OnInit {
         firstName: [''],
         lastName: [''],
         companyName: [''],
-        referencePerson: [''],
         addressLine1: [''],
         addressLine2: [''],
         zip: [''],
@@ -77,27 +75,16 @@ export class CheckoutComponent implements OnInit {
     const type = isCompany ? 'BUSINESS' : 'PRIVATE';
     this.checkoutForm.patchValue({ customerType: type });
     
+    // Update validators based on type
     const billingGroup = this.checkoutForm.get('billingAddress') as FormGroup;
     const companyControl = billingGroup.get('companyName');
-    const referenceControl = billingGroup.get('referencePerson');
-    const firstNameControl = billingGroup.get('firstName');
-    const lastNameControl = billingGroup.get('lastName');
     
     if (isCompany) {
       companyControl?.setValidators([Validators.required]);
-      referenceControl?.setValidators([Validators.required]);
-      firstNameControl?.clearValidators();
-      lastNameControl?.clearValidators();
     } else {
       companyControl?.clearValidators();
-      referenceControl?.clearValidators();
-      firstNameControl?.setValidators([Validators.required]);
-      lastNameControl?.setValidators([Validators.required]);
     }
     companyControl?.updateValueAndValidity();
-    referenceControl?.updateValueAndValidity();
-    firstNameControl?.updateValueAndValidity();
-    lastNameControl?.updateValueAndValidity();
   }
 
   ngOnInit(): void {
@@ -164,7 +151,6 @@ export class CheckoutComponent implements OnInit {
         firstName: formVal.billingAddress.firstName,
         lastName: formVal.billingAddress.lastName,
         companyName: formVal.billingAddress.companyName,
-        contactPerson: formVal.billingAddress.referencePerson,
         addressLine1: formVal.billingAddress.addressLine1,
         addressLine2: formVal.billingAddress.addressLine2,
         zip: formVal.billingAddress.zip,
@@ -175,7 +161,6 @@ export class CheckoutComponent implements OnInit {
         firstName: formVal.shippingAddress.firstName,
         lastName: formVal.shippingAddress.lastName,
         companyName: formVal.shippingAddress.companyName,
-        contactPerson: formVal.shippingAddress.referencePerson,
         addressLine1: formVal.shippingAddress.addressLine1,
         addressLine2: formVal.shippingAddress.addressLine2,
         zip: formVal.shippingAddress.zip,

frontend/src/app/features/contact/components/contact-form/contact-form.component.html

@@ -40,7 +40,7 @@
 
     <div class="form-group">
       <label>{{ 'CONTACT.LABEL_MESSAGE' | translate }}</label>
-      <textarea formControlName="message" class="form-control" rows="4"></textarea>
+      <textarea formControlName="message" class="form-control" rows="10"></textarea>
     </div>
 
     <!-- File Upload Section -->
@@ -60,8 +60,8 @@
           <button type="button" class="remove-btn" (click)="removeFile(i)">×</button>
           <img *ngIf="file.type === 'image'" [src]="file.url" class="preview-img">
           <div *ngIf="file.type !== 'image'" class="file-icon">
-            <span *ngIf="file.type === 'pdf'">{{ 'CONTACT.FILE_TYPE_PDF' | translate }}</span>
-            <span *ngIf="file.type === '3d'">{{ 'CONTACT.FILE_TYPE_3D' | translate }}</span>
+            <span *ngIf="file.type === 'pdf'">PDF</span>
+            <span *ngIf="file.type === '3d'">3D</span>
           </div>
           <div class="file-name" [title]="file.file.name">{{ file.file.name }}</div>
         </div>

frontend/src/app/features/contact/contact-page.component.html

@@ -1,7 +1,7 @@
 <section class="contact-hero">
   <div class="container">
     <h1>{{ 'CONTACT.TITLE' | translate }}</h1>
-    <p class="subtitle">{{ 'CONTACT.HERO_SUBTITLE' | translate }}</p>
+    <p class="subtitle">Siamo qui per aiutarti. Compila il modulo sottostante per qualsiasi richiesta.</p>
   </div>
 </section>
 

frontend/src/app/features/home/home.component.html

@@ -2,18 +2,22 @@
       <section class="hero">
         <div class="container hero-grid">
           <div class="hero-copy">
-            <p class="eyebrow">{{ 'HOME.HERO_EYEBROW' | translate }}</p>
-            <h1 class="hero-title" [innerHTML]="'HOME.HERO_TITLE' | translate"></h1>
+            <p class="eyebrow">Stampa 3D tecnica per aziende, freelance e maker</p>
+            <h1 class="hero-title">
+              Prezzo e tempi in pochi secondi.<br>
+              Dal file 3D al pezzo finito.
+            </h1>
             <p class="hero-lead">
-              {{ 'HOME.HERO_LEAD' | translate }}
+              Il calcolatore più avanzato per le tue stampe 3D: precisione assoluta e zero sorprese.
             </p>
             <p class="hero-subtitle">
-              {{ 'HOME.HERO_SUBTITLE' | translate }}
+              Realizziamo pezzi unici e produzioni in serie. Se hai il file, il preventivo è istantaneo. 
+              Se devi ancora crearlo, il nostro team di design lo progetterà per te.
             </p>
             <div class="hero-actions">
-              <app-button variant="primary" routerLink="/calculator/basic">{{ 'HOME.BTN_CALCULATE' | translate }}</app-button>
-              <app-button variant="outline" routerLink="/shop">{{ 'HOME.BTN_SHOP' | translate }}</app-button>
-              <app-button variant="text" routerLink="/contact">{{ 'HOME.BTN_CONTACT' | translate }}</app-button>
+              <app-button variant="primary" routerLink="/calculator/basic">Calcola Preventivo</app-button>
+              <app-button variant="outline" routerLink="/shop">Vai allo shop</app-button>
+              <app-button variant="text" routerLink="/contact">Parla con noi</app-button>
             </div>
           </div>
         </div>
@@ -22,31 +26,31 @@
       <section class="section calculator">
         <div class="container calculator-grid">
           <div class="calculator-copy">
-            <h2 class="section-title">{{ 'HOME.SEC_CALC_TITLE' | translate }}</h2>
+            <h2 class="section-title">Preventivo immediato in pochi secondi</h2>
             <p class="section-subtitle">
-              {{ 'HOME.SEC_CALC_SUBTITLE' | translate }}
+              Nessuna registrazione necessaria. Non salviamo il tuo file fino al momento dell'ordine e la stima è effettuata tramite vero slicing.
             </p>
             <ul class="calculator-list">
-              <li>{{ 'HOME.SEC_CALC_LIST_1' | translate }}</li>
-              <li>{{ 'HOME.SEC_CALC_LIST_2' | translate }}</li>
+              <li>Formati supportati: STL, 3MF, STEP, OBJ</li>
+              <li>Qualità: bozza, standard, alta definizione</li>
             </ul>
           </div>
           <app-card class="quote-card">
             <div class="quote-header">
               <div>
-                <p class="quote-eyebrow">{{ 'HOME.CARD_CALC_EYEBROW' | translate }}</p>
-                <h3 class="quote-title">{{ 'HOME.CARD_CALC_TITLE' | translate }}</h3>
+                <p class="quote-eyebrow">Calcolo automatico</p>
+                <h3 class="quote-title">Prezzo e tempi in un click</h3>
               </div>
-              <span class="quote-tag">{{ 'HOME.CARD_CALC_TAG' | translate }}</span>
+              <span class="quote-tag">Senza registrazione</span>
             </div>
             <ul class="quote-steps">
-              <li>{{ 'HOME.CARD_CALC_STEP_1' | translate }}</li>
-              <li>{{ 'HOME.CARD_CALC_STEP_2' | translate }}</li>
-              <li>{{ 'HOME.CARD_CALC_STEP_3' | translate }}</li>
+              <li>Carica il file 3D</li>
+              <li>Scegli materiale e qualità</li>
+              <li>Ricevi subito costo e tempo</li>
             </ul>
             <div class="quote-actions">
-              <app-button variant="primary" [fullWidth]="true" routerLink="/calculator/basic">{{ 'HOME.BTN_OPEN_CALC' | translate }}</app-button>
-              <app-button variant="outline" [fullWidth]="true" routerLink="/contact">{{ 'HOME.BTN_CONTACT' | translate }}</app-button>
+              <app-button variant="primary" [fullWidth]="true" routerLink="/calculator/basic">Apri calcolatore</app-button>
+              <app-button variant="outline" [fullWidth]="true" routerLink="/contact">Parla con noi</app-button>
             </div>
           </app-card>
         </div>
@@ -56,9 +60,9 @@
         <div class="capabilities-bg"></div>
         <div class="container">
           <div class="section-head">
-            <h2 class="section-title">{{ 'HOME.SEC_CAP_TITLE' | translate }}</h2>
+            <h2 class="section-title">Cosa puoi ottenere</h2>
             <p class="section-subtitle">
-              {{ 'HOME.SEC_CAP_SUBTITLE' | translate }}
+              Produzione su misura per prototipi, piccole serie e pezzi personalizzati.
             </p>
           </div>
           <div class="cap-cards">
@@ -66,29 +70,29 @@
               <div class="card-image-placeholder">
                   <!-- <img src="..." alt="..."> -->
               </div>
-              <h3>{{ 'HOME.CAP_1_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CAP_1_TEXT' | translate }}</p>
+              <h3>Prototipazione veloce</h3>
+              <p class="text-muted">Dal file digitale al modello fisico in 24/48 ore. Verifica ergonomia, incastri e funzionamento prima dello stampo definitivo.</p>
             </app-card>
             <app-card>
               <div class="card-image-placeholder">
                   <!-- <img src="..." alt="..."> -->
               </div>
-              <h3>{{ 'HOME.CAP_2_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CAP_2_TEXT' | translate }}</p>
+              <h3>Pezzi personalizzati</h3>
+              <p class="text-muted">Componenti unici impossibili da trovare in commercio. Riproduciamo parti rotte o creiamo adattamenti su misura.</p>
             </app-card>
             <app-card>
               <div class="card-image-placeholder">
                   <!-- <img src="..." alt="..."> -->
               </div>
-              <h3>{{ 'HOME.CAP_3_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CAP_3_TEXT' | translate }}</p>
+              <h3>Piccole serie</h3>
+              <p class="text-muted">Produzione ponte o serie limitate (10-500 pezzi) con qualità ripetibile. Ideale per validazione di mercato.</p>
             </app-card>
             <app-card>
               <div class="card-image-placeholder">
                   <!-- <img src="..." alt="..."> -->
               </div>
-              <h3>{{ 'HOME.CAP_4_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CAP_4_TEXT' | translate }}</p>
+              <h3>Consulenza e CAD</h3>
+              <p class="text-muted">Non hai il file 3D? Ti aiutiamo a progettarlo, ottimizzarlo per la stampa e scegliere il materiale giusto.</p>
             </app-card>
           </div>
         </div>
@@ -97,32 +101,33 @@
       <section class="section shop">
         <div class="container split">
           <div class="shop-copy">
-            <h2 class="section-title">{{ 'HOME.SEC_SHOP_TITLE' | translate }}</h2>
+            <h2 class="section-title">Shop di soluzioni tecniche pronte</h2>
             <p>
-              {{ 'HOME.SEC_SHOP_TEXT' | translate }}
+              Prodotti selezionati, testati in laboratorio e pronti all'uso. Risolvono problemi reali con
+              funzionalità concrete.
             </p>
             <ul class="shop-list">
-              <li>{{ 'HOME.SEC_SHOP_LIST_1' | translate }}</li>
-              <li>{{ 'HOME.SEC_SHOP_LIST_2' | translate }}</li>
-              <li>{{ 'HOME.SEC_SHOP_LIST_3' | translate }}</li>
+              <li>Accessori funzionali per officine e laboratori</li>
+              <li>Ricambi e componenti difficili da reperire</li>
+              <li>Supporti e organizzatori per migliorare i flussi di lavoro</li>
             </ul>
             <div class="shop-actions">
-              <app-button variant="primary" routerLink="/shop">{{ 'HOME.BTN_DISCOVER' | translate }}</app-button>
-              <app-button variant="outline" routerLink="/contact">{{ 'HOME.BTN_REQ_SOLUTION' | translate }}</app-button>
+              <app-button variant="primary" routerLink="/shop">Scopri i prodotti</app-button>
+              <app-button variant="outline" routerLink="/contact">Richiedi una soluzione</app-button>
             </div>
           </div>
           <div class="shop-cards">
             <app-card>
-              <h3>{{ 'HOME.CARD_SHOP_1_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CARD_SHOP_1_TEXT' | translate }}</p>
+              <h3>Best seller tecnici</h3>
+              <p class="text-muted">Soluzioni provate sul campo e già pronte alla spedizione.</p>
             </app-card>
             <app-card>
-              <h3>{{ 'HOME.CARD_SHOP_2_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CARD_SHOP_2_TEXT' | translate }}</p>
+              <h3>Kit pronti all'uso</h3>
+              <p class="text-muted">Componenti compatibili e facili da montare senza sorprese.</p>
             </app-card>
             <app-card>
-              <h3>{{ 'HOME.CARD_SHOP_3_TITLE' | translate }}</h3>
-              <p class="text-muted">{{ 'HOME.CARD_SHOP_3_TEXT' | translate }}</p>
+              <h3>Su richiesta</h3>
+              <p class="text-muted">Non trovi quello che serve? Lo progettiamo e lo produciamo per te.</p>
             </app-card>
           </div>
         </div>
@@ -131,16 +136,17 @@
       <section class="section about">
         <div class="container about-grid">
           <div class="about-copy">
-            <h2 class="section-title">{{ 'HOME.SEC_ABOUT_TITLE' | translate }}</h2>
+            <h2 class="section-title">Su di noi</h2>
             <p>
-              {{ 'HOME.SEC_ABOUT_TEXT' | translate }}
+              3D fab è un laboratorio tecnico di stampa 3D. Seguiamo progetti dalla consulenza iniziale
+              alla produzione, con tempi chiari e supporto diretto.
             </p>
-            <app-button variant="outline" routerLink="/contact">{{ 'HOME.BTN_CONTACT' | translate }}</app-button>
+            <app-button variant="outline" routerLink="/contact">Contattaci</app-button>
           </div>
           <div class="about-media">
             <div class="about-feature-image">
               <!-- Foto founders -->
-              <span class="text-sm">{{ 'HOME.FOUNDERS_PHOTO' | translate }}</span>
+              <span class="text-sm">Foto Founders</span>
             </div>
           </div>
         </div>

frontend/src/app/features/order-confirmed/order-confirmed.component.html

@@ -1,25 +0,0 @@
-<div class="container hero">
-  <h1>{{ 'ORDER_CONFIRMED.TITLE' | translate }}</h1>
-  <p class="subtitle">{{ 'ORDER_CONFIRMED.SUBTITLE' | translate }}</p>
-</div>
-
-<div class="container">
-  <div class="confirmation-layout">
-    <app-card class="status-card">
-      <div class="status-badge">{{ 'ORDER_CONFIRMED.STATUS' | translate }}</div>
-      <h2>{{ 'ORDER_CONFIRMED.HEADING' | translate }}</h2>
-      <p class="order-ref" *ngIf="orderNumber">
-        {{ 'ORDER_CONFIRMED.ORDER_REF' | translate }}: <strong>#{{ orderNumber }}</strong>
-      </p>
-
-      <div class="message-block">
-        <p>{{ 'ORDER_CONFIRMED.PROCESSING_TEXT' | translate }}</p>
-        <p>{{ 'ORDER_CONFIRMED.EMAIL_TEXT' | translate }}</p>
-      </div>
-
-      <div class="actions">
-        <app-button (click)="goHome()">{{ 'ORDER_CONFIRMED.BACK_HOME' | translate }}</app-button>
-      </div>
-    </app-card>
-  </div>
-</div>

frontend/src/app/features/order-confirmed/order-confirmed.component.scss

@@ -1,62 +0,0 @@
-.hero {
-  padding: var(--space-12) 0 var(--space-8);
-  text-align: center;
-
-  h1 {
-    font-size: 2.4rem;
-    margin-bottom: var(--space-2);
-  }
-}
-
-.subtitle {
-  font-size: 1.1rem;
-  color: var(--color-text-muted);
-  max-width: 720px;
-  margin: 0 auto;
-}
-
-.confirmation-layout {
-  max-width: 760px;
-  margin: 0 auto var(--space-12);
-}
-
-.status-badge {
-  display: inline-block;
-  padding: 0.35rem 0.65rem;
-  border-radius: 999px;
-  background: #eef8f0;
-  color: #136f2d;
-  font-weight: 700;
-  font-size: 0.85rem;
-  margin-bottom: var(--space-4);
-}
-
-h2 {
-  margin: 0 0 var(--space-3);
-}
-
-.order-ref {
-  margin: 0 0 var(--space-4);
-  color: var(--color-text-muted);
-}
-
-.message-block {
-  background: var(--color-neutral-100);
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-md);
-  padding: var(--space-5);
-  margin-bottom: var(--space-6);
-
-  p {
-    margin: 0;
-    line-height: 1.45;
-  }
-
-  p + p {
-    margin-top: var(--space-3);
-  }
-}
-
-.actions {
-  max-width: 320px;
-}

frontend/src/app/features/order-confirmed/order-confirmed.component.ts

@@ -1,48 +0,0 @@
-import { Component, OnInit, inject } from '@angular/core';
-import { CommonModule } from '@angular/common';
-import { ActivatedRoute, Router } from '@angular/router';
-import { TranslateModule } from '@ngx-translate/core';
-import { AppButtonComponent } from '../../shared/components/app-button/app-button.component';
-import { AppCardComponent } from '../../shared/components/app-card/app-card.component';
-import { QuoteEstimatorService } from '../calculator/services/quote-estimator.service';
-
-@Component({
-  selector: 'app-order-confirmed',
-  standalone: true,
-  imports: [CommonModule, TranslateModule, AppButtonComponent, AppCardComponent],
-  templateUrl: './order-confirmed.component.html',
-  styleUrl: './order-confirmed.component.scss'
-})
-export class OrderConfirmedComponent implements OnInit {
-  private route = inject(ActivatedRoute);
-  private router = inject(Router);
-  private quoteService = inject(QuoteEstimatorService);
-
-  orderId: string | null = null;
-  orderNumber: string | null = null;
-
-  ngOnInit(): void {
-    this.orderId = this.route.snapshot.paramMap.get('orderId');
-    if (!this.orderId) {
-      return;
-    }
-
-    this.orderNumber = this.extractOrderNumber(this.orderId);
-    this.quoteService.getOrder(this.orderId).subscribe({
-      next: (order) => {
-        this.orderNumber = order?.orderNumber ?? this.orderNumber;
-      },
-      error: () => {
-        // Keep fallback derived from UUID when API is unavailable.
-      }
-    });
-  }
-
-  goHome(): void {
-    this.router.navigate(['/']);
-  }
-
-  private extractOrderNumber(orderId: string): string {
-    return orderId.split('-')[0];
-  }
-}

frontend/src/app/features/payment/payment.component.html

@@ -5,6 +5,7 @@
 
 <div class="container">
   <div class="payment-layout" *ngIf="order() as o">
+    
     <div class="payment-main">
       <app-card class="mb-6">
         <div class="card-header-simple">
@@ -17,39 +18,32 @@
               class="type-option" 
               [class.selected]="selectedPaymentMethod === 'twint'"
               (click)="selectPayment('twint')">
-              <span class="method-name">{{ 'PAYMENT.METHOD_TWINT' | translate }}</span>
+              <span class="method-name">TWINT</span>
             </div>
             <div 
               class="type-option" 
               [class.selected]="selectedPaymentMethod === 'bill'"
               (click)="selectPayment('bill')">
-              <span class="method-name">{{ 'PAYMENT.METHOD_BANK' | translate }}</span>
+              <span class="method-name">QR Bill / Bank Transfer</span>
             </div>
           </div>
         </div>
 
-        <div class="payment-details fade-in text-center" *ngIf="selectedPaymentMethod === 'twint'">
+        <!-- TWINT Details -->
+        <div class="payment-details fade-in" *ngIf="selectedPaymentMethod === 'twint'">
           <div class="details-header">
             <h4>{{ 'PAYMENT.TWINT_TITLE' | translate }}</h4>
           </div>
           <div class="qr-placeholder">
-            <img
-              *ngIf="twintQrUrl()"
-              class="twint-qr"
-              [src]="getTwintQrUrl()"
-              (error)="onTwintQrError()"
-              alt="TWINT payment QR" />
-            <p>{{ 'PAYMENT.TWINT_DESC' | translate }}</p>
-            <p class="billing-hint">{{ 'PAYMENT.BILLING_INFO_HINT' | translate }}</p>
-            <div class="twint-mobile-action">
-              <app-button variant="outline" (click)="openTwintPayment()" [fullWidth]="true">
-                {{ 'PAYMENT.TWINT_OPEN' | translate }}
-              </app-button>
+            <div class="qr-box">
+               <span>QR CODE</span>
             </div>
+            <p>{{ 'PAYMENT.TWINT_DESC' | translate }}</p>
             <p class="amount">{{ 'PAYMENT.TOTAL' | translate }}: {{ o.totalChf | currency:'CHF' }}</p>
           </div>
         </div>
 
+        <!-- QR Bill Details -->
         <div class="payment-details fade-in" *ngIf="selectedPaymentMethod === 'bill'">
           <div class="details-header">
             <h4>{{ 'PAYMENT.BANK_TITLE' | translate }}</h4>
@@ -57,8 +51,7 @@
           <div class="bank-details">
             <p><strong>{{ 'PAYMENT.BANK_OWNER' | translate }}:</strong> 3D Fab Switzerland</p>
             <p><strong>{{ 'PAYMENT.BANK_IBAN' | translate }}:</strong> CH98 0000 0000 0000 0000 0</p>
-            <p><strong>{{ 'PAYMENT.BANK_REF' | translate }}:</strong> {{ getDisplayOrderNumber(o) }}</p>
-            <p class="billing-hint">{{ 'PAYMENT.BILLING_INFO_HINT' | translate }}</p>
+            <p><strong>{{ 'PAYMENT.BANK_REF' | translate }}:</strong> {{ o.id }}</p>
             
             <div class="qr-bill-actions">
               <app-button variant="outline" (click)="downloadInvoice()">
@@ -80,7 +73,7 @@
       <app-card class="sticky-card">
         <div class="card-header-simple">
           <h3>{{ 'PAYMENT.SUMMARY_TITLE' | translate }}</h3>
-          <p class="order-id">#{{ getDisplayOrderNumber(o) }}</p>
+          <p class="order-id">#{{ o.id.substring(0, 8) }}</p>
         </div>
 
         <div class="summary-totals">
@@ -103,6 +96,7 @@
         </div>
       </app-card>
     </div>
+
   </div>
 
   <div *ngIf="loading()" class="loading-state">

frontend/src/app/features/payment/payment.component.scss

@@ -84,7 +84,7 @@
     border-color: var(--color-brand);
     background-color: var(--color-neutral-100);
     color: #000;
-    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
+    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
   }
 }
 
@@ -95,28 +95,6 @@
   margin-bottom: var(--space-6);
   border: 1px solid var(--color-border);
 
-  &.text-center {
-    text-align: center;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-    width: 100%;
-
-    .details-header {
-      width: 100%;
-      text-align: center;
-    }
-    
-    .qr-placeholder {
-      width: 100%;
-      display: flex;
-      flex-direction: column;
-      align-items: center;
-      text-align: center;
-    }
-  }
-
   .details-header {
     margin-bottom: var(--space-4);
     h4 {
@@ -127,29 +105,23 @@
   }
 }
 
-
 .qr-placeholder {
   display: flex;
   flex-direction: column;
   align-items: center;
   text-align: center;
 
-  .twint-qr {
-    width: 240px;
-    height: 240px;
-    background-color: #fff;
-    border: 1px solid var(--color-border);
-    border-radius: var(--radius-md);
-    padding: var(--space-2);
+  .qr-box {
+    width: 180px;
+    height: 180px;
+    background-color: white;
+    border: 2px solid var(--color-neutral-900);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-weight: bold;
     margin-bottom: var(--space-4);
-    object-fit: contain;
-    box-shadow: 0 6px 18px rgba(44, 37, 84, 0.08);
-  }
-
-  .twint-mobile-action {
-    width: 100%;
-    max-width: 320px;
-    margin-top: var(--space-3);
+    border-radius: var(--radius-md);
   }
 
   .amount {
@@ -160,12 +132,6 @@
   }
 }
 
-.billing-hint {
-  margin-top: var(--space-3);
-  font-size: 0.95rem;
-  color: var(--color-text-muted);
-}
-
 .bank-details {
   p {
     margin-bottom: var(--space-2);
@@ -217,20 +183,13 @@
 }
 
 @keyframes fadeIn {
-  from {
-    opacity: 0;
-    transform: translateY(-5px);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
+  from { opacity: 0; transform: translateY(-5px); }
+  to { opacity: 1; transform: translateY(0); }
 }
 
 .mb-6 { margin-bottom: var(--space-6); }
 
-.error-message,
-.loading-state {
+.error-message, .loading-state {
   margin-top: var(--space-12);
   text-align: center;
 }

frontend/src/app/features/payment/payment.component.ts

@@ -5,7 +5,6 @@ import { AppButtonComponent } from '../../shared/components/app-button/app-butto
 import { AppCardComponent } from '../../shared/components/app-card/app-card.component';
 import { QuoteEstimatorService } from '../calculator/services/quote-estimator.service';
 import { TranslateModule } from '@ngx-translate/core';
-import { environment } from '../../../environments/environment';
 
 @Component({
   selector: 'app-payment',
@@ -24,14 +23,11 @@ export class PaymentComponent implements OnInit {
   order = signal<any>(null);
   loading = signal(true);
   error = signal<string | null>(null);
-  twintOpenUrl = signal<string | null>(null);
-  twintQrUrl = signal<string | null>(null);
 
   ngOnInit(): void {
     this.orderId = this.route.snapshot.paramMap.get('orderId');
     if (this.orderId) {
       this.loadOrder();
-      this.loadTwintPayment();
     } else {
       this.error.set('Order ID not found.');
       this.loading.set(false);
@@ -58,16 +54,13 @@ export class PaymentComponent implements OnInit {
   }
 
   downloadInvoice() {
-    const orderId = this.orderId;
-    if (!orderId) return;
-    this.quoteService.getOrderInvoice(orderId).subscribe({
+    if (!this.orderId) return;
+    this.quoteService.getOrderInvoice(this.orderId).subscribe({
       next: (blob) => {
         const url = window.URL.createObjectURL(blob);
         const a = document.createElement('a');
         a.href = url;
-        const fallbackOrderNumber = this.extractOrderNumber(orderId);
-        const orderNumber = this.order()?.orderNumber ?? fallbackOrderNumber;
-        a.download = `invoice-${orderNumber}.pdf`;
+        a.download = `invoice-${this.orderId}.pdf`;
         a.click();
         window.URL.revokeObjectURL(url);
       },
@@ -75,65 +68,9 @@ export class PaymentComponent implements OnInit {
     });
   }
 
-  loadTwintPayment() {
-    if (!this.orderId) return;
-    this.quoteService.getTwintPayment(this.orderId).subscribe({
-      next: (res) => {
-        const qrPath = typeof res.qrImageUrl === 'string' ? `${res.qrImageUrl}?size=360` : null;
-        const qrDataUri = typeof res.qrImageDataUri === 'string' ? res.qrImageDataUri : null;
-        this.twintOpenUrl.set(this.resolveApiUrl(res.openUrl));
-        this.twintQrUrl.set(qrDataUri ?? this.resolveApiUrl(qrPath));
-      },
-      error: (err) => {
-        console.error('Failed to load TWINT payment details', err);
-      }
-    });
-  }
-
-  openTwintPayment(): void {
-    const openUrl = this.twintOpenUrl();
-    if (typeof window !== 'undefined' && openUrl) {
-      window.open(openUrl, '_blank');
-    }
-  }
-
-  getTwintQrUrl(): string {
-    return this.twintQrUrl() ?? '';
-  }
-
-  onTwintQrError(): void {
-    this.twintQrUrl.set(null);
-  }
-
-  private resolveApiUrl(urlOrPath: string | null | undefined): string | null {
-    if (!urlOrPath) return null;
-    if (urlOrPath.startsWith('http://') || urlOrPath.startsWith('https://')) {
-      return urlOrPath;
-    }
-    const base = (environment.apiUrl || '').replace(/\/$/, '');
-    const path = urlOrPath.startsWith('/') ? urlOrPath : `/${urlOrPath}`;
-    return `${base}${path}`;
-  }
-
   completeOrder(): void {
-    if (!this.orderId) {
-      this.router.navigate(['/']);
-      return;
-    }
-    this.router.navigate(['/order-confirmed', this.orderId]);
-  }
-
-  getDisplayOrderNumber(order: any): string {
-    if (order?.orderNumber) {
-      return order.orderNumber;
-    }
-    if (order?.id) {
-      return this.extractOrderNumber(order.id);
-    }
-    return 'N/A';
-  }
-
-  private extractOrderNumber(orderId: string): string {
-    return orderId.split('-')[0];
+    // Simulate payment completion
+    alert('Payment Simulated! Order marked as PAID.');
+    this.router.navigate(['/']);
   }
 }

frontend/src/app/features/shop/product-detail.component.html

@@ -20,6 +20,6 @@
       </div>
     </div>
   } @else {
-    <p>{{ 'SHOP.NOT_FOUND' | translate }}</p>
+    <p>Prodotto non trovato.</p>
   }
 </div>

frontend/src/app/shared/components/app-button/app-button.component.scss

@@ -32,14 +32,12 @@
 
 .btn-outline {
   background-color: transparent;
-  border-color: var(--color-brand);
-  border-width: 2px;
-  padding: calc(0.5rem - 1px) calc(1rem - 1px);
-  color: var(--color-neutral-900);
-  font-weight: 600;
+  border-color: var(--color-border);
+  color: var(--color-text);
   &:hover:not(:disabled) { 
-    background-color: var(--color-brand); 
+    border-color: var(--color-brand); 
     color: var(--color-neutral-900);
+    background-color: rgba(250, 207, 10, 0.1); /* Low opacity brand color */
   }
 }
 

frontend/src/app/shared/components/stl-viewer/stl-viewer.component.ts

@@ -25,7 +25,6 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
   private controls!: OrbitControls;
   private animationId: number | null = null;
   private currentMesh: THREE.Mesh | null = null;
-  private autoRotate = true;
 
   loading = false;
 
@@ -39,14 +38,14 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
     }
     
     if (changes['color'] && this.currentMesh && !changes['file']) {
-      this.applyColorStyle(this.color);
+        // Update existing mesh color if only color changed
+        const mat = this.currentMesh.material as THREE.MeshPhongMaterial;
+        mat.color.set(this.color);
     }
   }
 
   ngOnDestroy() {
     if (this.animationId) cancelAnimationFrame(this.animationId);
-    this.clearCurrentMesh();
-    if (this.controls) this.controls.dispose();
     if (this.renderer) this.renderer.dispose();
   }
 
@@ -55,51 +54,28 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
     const height = this.rendererContainer.nativeElement.clientHeight;
 
     this.scene = new THREE.Scene();
-    this.scene.background = new THREE.Color(0xf4f8fc);
+    this.scene.background = new THREE.Color(0xf7f6f2); // Neutral-50
 
     // Lights
-    const ambientLight = new THREE.AmbientLight(0xffffff, 0.75);
+    const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
     this.scene.add(ambientLight);
 
-    const hemiLight = new THREE.HemisphereLight(0xf8fbff, 0xc8d3df, 0.95);
-    hemiLight.position.set(0, 30, 0);
-    this.scene.add(hemiLight);
-
-    const directionalLight1 = new THREE.DirectionalLight(0xffffff, 1.35);
-    directionalLight1.position.set(6, 8, 6);
-    this.scene.add(directionalLight1);
-
-    const directionalLight2 = new THREE.DirectionalLight(0xe8f0ff, 0.85);
-    directionalLight2.position.set(-7, 4, -5);
-    this.scene.add(directionalLight2);
-
-    const directionalLight3 = new THREE.DirectionalLight(0xffffff, 0.55);
-    directionalLight3.position.set(0, 5, -9);
-    this.scene.add(directionalLight3);
+    const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
+    directionalLight.position.set(1, 1, 1);
+    this.scene.add(directionalLight);
 
     // Camera
     this.camera = new THREE.PerspectiveCamera(50, width / height, 0.1, 1000);
     this.camera.position.z = 100;
 
     // Renderer
-    this.renderer = new THREE.WebGLRenderer({ antialias: true, alpha: false, powerPreference: 'high-performance' });
-    this.renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
-    this.renderer.outputColorSpace = THREE.SRGBColorSpace;
-    this.renderer.toneMapping = THREE.ACESFilmicToneMapping;
-    this.renderer.toneMappingExposure = 1.2;
+    this.renderer = new THREE.WebGLRenderer({ antialias: true });
     this.renderer.setSize(width, height);
     this.rendererContainer.nativeElement.appendChild(this.renderer.domElement);
 
     // Controls
     this.controls = new OrbitControls(this.camera, this.renderer.domElement);
     this.controls.enableDamping = true;
-    this.controls.dampingFactor = 0.06;
-    this.controls.enablePan = false;
-    this.controls.minDistance = 10;
-    this.controls.maxDistance = 600;
-    this.controls.addEventListener('start', () => {
-      this.autoRotate = false;
-    });
 
     this.animate();
 
@@ -119,27 +95,24 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
 
   private loadFile(file: File) {
     this.loading = true;
-    this.autoRotate = true;
     const reader = new FileReader();
     reader.onload = (event) => {
       try {
         const loader = new STLLoader();
         const geometry = loader.parse(event.target?.result as ArrayBuffer);
         
-        this.clearCurrentMesh();
+        if (this.currentMesh) {
+          this.scene.remove(this.currentMesh);
+          this.currentMesh.geometry.dispose();
+        }
 
-        geometry.computeVertexNormals();
-
-        const material = new THREE.MeshStandardMaterial({
+        const material = new THREE.MeshPhongMaterial({ 
           color: this.color, 
-          roughness: 0.42,
-          metalness: 0.05,
-          emissive: 0x000000,
-          emissiveIntensity: 0
+          specular: 0x111111,
+          shininess: 200 
         });
         
         this.currentMesh = new THREE.Mesh(geometry, material);
-        this.applyColorStyle(this.color);
         
         // Center geometry
         geometry.computeBoundingBox();
@@ -167,10 +140,9 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
         
         // Calculate distance towards camera (z-axis)
         let cameraZ = Math.abs(maxDim / 2 / Math.tan(fov / 2));
-        cameraZ *= 1.72;
+        cameraZ *= 1.5; // Tighter zoom (reduced from 2.5)
         
-        this.camera.position.set(cameraZ * 0.65, cameraZ * 0.95, cameraZ * 1.1);
-        this.camera.lookAt(0, 0, 0);
+        this.camera.position.z = cameraZ;
         this.camera.updateProjectionMatrix();
         this.controls.update();
         
@@ -185,63 +157,9 @@ export class StlViewerComponent implements OnInit, OnDestroy, OnChanges {
 
   private animate() {
     this.animationId = requestAnimationFrame(() => this.animate());
-    
-    if (this.currentMesh && this.autoRotate) {
-      this.currentMesh.rotation.z += 0.0025;
-    }
-
     if (this.controls) this.controls.update();
     if (this.renderer && this.scene && this.camera) {
         this.renderer.render(this.scene, this.camera);
     }
   }
-
-  private clearCurrentMesh() {
-    if (!this.currentMesh) {
-      return;
-    }
-
-    this.scene.remove(this.currentMesh);
-    this.currentMesh.geometry.dispose();
-
-    const meshMaterial = this.currentMesh.material;
-    if (Array.isArray(meshMaterial)) {
-      meshMaterial.forEach((m) => m.dispose());
-    } else {
-      meshMaterial.dispose();
-    }
-
-    this.currentMesh = null;
-  }
-
-  private applyColorStyle(color: string) {
-    if (!this.currentMesh) {
-      return;
-    }
-
-    const darkColor = this.isDarkColor(color);
-    const meshMaterial = this.currentMesh.material;
-
-    if (meshMaterial instanceof THREE.MeshStandardMaterial) {
-      meshMaterial.color.set(color);
-      if (darkColor) {
-        meshMaterial.emissive.set(0x2a2f36);
-        meshMaterial.emissiveIntensity = 0.28;
-        meshMaterial.roughness = 0.5;
-        meshMaterial.metalness = 0.03;
-      } else {
-        meshMaterial.emissive.set(0x000000);
-        meshMaterial.emissiveIntensity = 0;
-        meshMaterial.roughness = 0.42;
-        meshMaterial.metalness = 0.05;
-      }
-      meshMaterial.needsUpdate = true;
-    }
-  }
-
-  private isDarkColor(color: string): boolean {
-    const c = new THREE.Color(color);
-    const luminance = 0.2126 * c.r + 0.7152 * c.g + 0.0722 * c.b;
-    return luminance < 0.22;
-  }
 }

frontend/src/assets/i18n/en.json

@@ -40,7 +40,7 @@
     "CTA_START": "Start Now",
     "BUSINESS": "Business",
     "PRIVATE": "Private",
-    "MODE_EASY": "Quick",
+    "MODE_EASY": "Easy Print",
     "MODE_ADVANCED": "Advanced",
     "UPLOAD_LABEL": "Drag your 3D file here",
     "UPLOAD_SUB": "Supports STL, 3MF, STEP, OBJ up to 50MB",
@@ -61,6 +61,9 @@
     "ORDER": "Order Now",
     "CONSULT": "Request Consultation",
     "ERROR_GENERIC": "An error occurred while calculating the quote.",
+    "ERROR_UPLOAD_FAILED": "File upload failed. Please try again.",
+    "ERROR_VIRUS_DETECTED": "File removed (virus detected)",
+    "ERROR_SLICING_FAILED": "Slicing error (complex geometry?)",
     "NEW_QUOTE": "Calculate New Quote",
     "ORDER_SUCCESS_TITLE": "Order Submitted Successfully",
     "ORDER_SUCCESS_DESC": "We have received your order details. You will receive a confirmation email shortly with the payment details.",
@@ -155,6 +158,16 @@
     "CONTACT_INFO": "Contact Information",
     "BILLING_ADDR": "Billing Address",
     "SHIPPING_ADDR": "Shipping Address",
+    "SHIPPING_SAME": "Shipping address same as billing",
+    "ORDER_SUMMARY": "Order Summary",
+    "SUBTOTAL": "Subtotal",
+    "SETUP_FEE": "Setup Fee",
+    "SHIPPING": "Shipping",
+    "TOTAL": "Total",
+    "PLACE_ORDER": "Place Order",
+    "PROCESSING": "Processing...",
+    "PRIVATE": "Private",
+    "COMPANY": "Company",
     "FIRST_NAME": "First Name",
     "LAST_NAME": "Last Name",
     "EMAIL": "Email",
@@ -164,29 +177,17 @@
     "ADDRESS_2": "Address Line 2 (Optional)",
     "ZIP": "ZIP Code",
     "CITY": "City",
-    "COUNTRY": "Country",
-    "SHIPPING_SAME": "Shipping address same as billing",
-    "PLACE_ORDER": "Place Order",
-    "PROCESSING": "Processing...",
-    "SUMMARY_TITLE": "Order Summary",
-    "SUBTOTAL": "Subtotal",
-    "SETUP_FEE": "Setup Fee",
-    "TOTAL": "Total",
-    "QTY": "Qty",
-    "SHIPPING": "Shipping"
+    "COUNTRY": "Country"
   },
   "PAYMENT": {
     "TITLE": "Payment",
     "METHOD": "Payment Method",
     "TWINT_TITLE": "Pay with TWINT",
     "TWINT_DESC": "Scan the code with your TWINT app",
-    "TWINT_OPEN": "Open directly in TWINT",
-    "TWINT_LINK": "Open payment link",
     "BANK_TITLE": "Bank Transfer",
     "BANK_OWNER": "Owner",
     "BANK_IBAN": "IBAN",
     "BANK_REF": "Reference",
-    "BILLING_INFO_HINT": "Add the same information used in billing.",
     "DOWNLOAD_QR": "Download QR-Invoice (PDF)",
     "CONFIRM": "Confirm Order",
     "SUMMARY_TITLE": "Order Summary",
@@ -195,15 +196,5 @@
     "SETUP_FEE": "Setup Fee",
     "TOTAL": "Total",
     "LOADING": "Loading order details..."
-  },
-  "ORDER_CONFIRMED": {
-    "TITLE": "Order Confirmed",
-    "SUBTITLE": "Payment received. Your order is now being processed.",
-    "STATUS": "Processing",
-    "HEADING": "We are preparing your order",
-    "ORDER_REF": "Order reference",
-    "PROCESSING_TEXT": "As soon as payment is confirmed, your order will move to production.",
-    "EMAIL_TEXT": "We will send you an email update with status and next steps.",
-    "BACK_HOME": "Back to Home"
   }
 }

frontend/src/assets/i18n/it.json

@@ -11,59 +11,13 @@
     "TERMS": "Termini & Condizioni",
     "CONTACT": "Contattaci"
   },
-  "HOME": {
-    "HERO_EYEBROW": "Stampa 3D tecnica per aziende, freelance e maker",
-    "HERO_TITLE": "Prezzo e tempi in pochi secondi.<br>Dal file 3D al pezzo finito.",
-    "HERO_LEAD": "Il calcolatore più avanzato per le tue stampe 3D: precisione assoluta e zero sorprese.",
-    "HERO_SUBTITLE": "Realizziamo pezzi unici e produzioni in serie. Se hai il file, il preventivo è istantaneo. Se devi ancora crearlo, il nostro team di design lo progetterà per te.",
-    "BTN_CALCULATE": "Calcola Preventivo",
-    "BTN_SHOP": "Vai allo shop",
-    "BTN_CONTACT": "Parla con noi",
-    "SEC_CALC_TITLE": "Preventivo immediato in pochi secondi",
-    "SEC_CALC_SUBTITLE": "Nessuna registrazione necessaria. Non salviamo il tuo file fino al momento dell'ordine e la stima è effettuata tramite vero slicing.",
-    "SEC_CALC_LIST_1": "Formati supportati: STL, 3MF, STEP, OBJ",
-    "SEC_CALC_LIST_2": "Qualità: bozza, standard, alta definizione",
-    "CARD_CALC_EYEBROW": "Calcolo automatico",
-    "CARD_CALC_TITLE": "Prezzo e tempi in un click",
-    "CARD_CALC_TAG": "Senza registrazione",
-    "CARD_CALC_STEP_1": "Carica il file 3D",
-    "CARD_CALC_STEP_2": "Scegli materiale e qualità",
-    "CARD_CALC_STEP_3": "Ricevi subito costo e tempo",
-    "BTN_OPEN_CALC": "Apri calcolatore",
-    "SEC_CAP_TITLE": "Cosa puoi ottenere",
-    "SEC_CAP_SUBTITLE": "Produzione su misura per prototipi, piccole serie e pezzi personalizzati.",
-    "CAP_1_TITLE": "Prototipazione veloce",
-    "CAP_1_TEXT": "Dal file digitale al modello fisico in 24/48 ore. Verifica ergonomia, incastri e funzionamento prima dello stampo definitivo.",
-    "CAP_2_TITLE": "Pezzi personalizzati",
-    "CAP_2_TEXT": "Componenti unici impossibili da trovare in commercio. Riproduciamo parti rotte o creiamo adattamenti su misura.",
-    "CAP_3_TITLE": "Piccole serie",
-    "CAP_3_TEXT": "Produzione ponte o serie limitate (10-500 pezzi) con qualità ripetibile. Ideale per validazione di mercato.",
-    "CAP_4_TITLE": "Consulenza e CAD",
-    "CAP_4_TEXT": "Non hai il file 3D? Ti aiutiamo a progettarlo, ottimizzarlo per la stampa e scegliere il materiale giusto.",
-    "SEC_SHOP_TITLE": "Shop di soluzioni tecniche pronte",
-    "SEC_SHOP_TEXT": "Prodotti selezionati, testati in laboratorio e pronti all'uso. Risolvono problemi reali con funzionalità concrete.",
-    "SEC_SHOP_LIST_1": "Accessori funzionali per officine e laboratori",
-    "SEC_SHOP_LIST_2": "Ricambi e componenti difficili da reperire",
-    "SEC_SHOP_LIST_3": "Supporti e organizzatori per migliorare i flussi di lavoro",
-    "BTN_DISCOVER": "Scopri i prodotti",
-    "BTN_REQ_SOLUTION": "Richiedi una soluzione",
-    "CARD_SHOP_1_TITLE": "Best seller tecnici",
-    "CARD_SHOP_1_TEXT": "Soluzioni provate sul campo e già pronte alla spedizione.",
-    "CARD_SHOP_2_TITLE": "Kit pronti all'uso",
-    "CARD_SHOP_2_TEXT": "Componenti compatibili e facili da montare senza sorprese.",
-    "CARD_SHOP_3_TITLE": "Su richiesta",
-    "CARD_SHOP_3_TEXT": "Non trovi quello che serve? Lo progettiamo e lo produciamo per te.",
-    "SEC_ABOUT_TITLE": "Su di noi",
-    "SEC_ABOUT_TEXT": "3D fab è un laboratorio tecnico di stampa 3D. Seguiamo progetti dalla consulenza iniziale alla produzione, con tempi chiari e supporto diretto.",
-    "FOUNDERS_PHOTO": "Foto Founders"
-  },
   "CALC": {
     "TITLE": "Calcola Preventivo 3D",
     "SUBTITLE": "Carica il tuo file 3D (STL, 3MF, STEP...) e ricevi una stima immediata di costi e tempi di stampa.",
     "CTA_START": "Inizia Ora",
     "BUSINESS": "Aziende",
     "PRIVATE": "Privati",
-    "MODE_EASY": "Base",
+    "MODE_EASY": "Stampa Facile",
     "MODE_ADVANCED": "Avanzata",
     "UPLOAD_LABEL": "Trascina il tuo file 3D qui",
     "UPLOAD_SUB": "Supportiamo STL, 3MF, STEP, OBJ fino a 50MB",
@@ -86,6 +40,9 @@
     "ORDER": "Ordina Ora",
     "CONSULT": "Richiedi Consulenza",
     "ERROR_GENERIC": "Si è verificato un errore durante il calcolo del preventivo.",
+    "ERROR_UPLOAD_FAILED": "Caricamento file fallito. Riprova.",
+    "ERROR_VIRUS_DETECTED": "File rimosso (virus rilevato)",
+    "ERROR_SLICING_FAILED": "Errore slicing (geometria complessa?)",
     "NEW_QUOTE": "Calcola Nuovo Preventivo",
     "ORDER_SUCCESS_TITLE": "Ordine Inviato con Successo",
     "ORDER_SUCCESS_DESC": "Abbiamo ricevuto i dettagli del tuo ordine. Riceverai a breve una email di conferma con i dettagli per il pagamento.",
@@ -93,53 +50,13 @@
     "BENEFITS_1": "Preventivo automatico con costo e tempo immediati",
     "BENEFITS_2": "Materiali selezionati e qualità controllata",
     "BENEFITS_3": "Consulenza CAD se il file ha bisogno di modifiche",
-    "ERR_FILE_REQUIRED": "Il file è obbligatorio.",
-    "ANALYZING_TITLE": "Analisi in corso...",
-    "ANALYZING_TEXT": "Stiamo analizzando la geometria e calcolando il percorso utensile.",
-    "QTY_SHORT": "QTÀ",
-    "COLOR_LABEL": "COLORE",
-    "ADD_FILES": "Aggiungi file",
-    "UPLOADING": "Caricamento...",
-    "PROCESSING": "Elaborazione...",
-    "NOTES_PLACEHOLDER": "Istruzioni specifiche...",
-    "SETUP_NOTE": "* Include {{cost}} Costo di Setup"
-  },
-  "QUOTE": {
-    "PROCEED_ORDER": "Procedi con l'ordine",
-    "CONSULT": "Richiedi Consulenza",
-    "TOTAL": "Totale"
-  },
-  "USER_DETAILS": {
-    "TITLE": "I tuoi dati",
-    "NAME": "Nome",
-    "NAME_PLACEHOLDER": "Il tuo nome",
-    "SURNAME": "Cognome",
-    "SURNAME_PLACEHOLDER": "Il tuo cognome",
-    "EMAIL": "Email",
-    "EMAIL_PLACEHOLDER": "tua@email.com",
-    "PHONE": "Telefono",
-    "PHONE_PLACEHOLDER": "+41 ...",
-    "ADDRESS": "Indirizzo",
-    "ADDRESS_PLACEHOLDER": "Via e numero",
-    "ZIP": "CAP",
-    "ZIP_PLACEHOLDER": "0000",
-    "CITY": "Città",
-    "CITY_PLACEHOLDER": "Città",
-    "SUBMIT": "Procedi",
-    "SUMMARY_TITLE": "Riepilogo"
-  },
-  "COMMON": {
-    "REQUIRED": "Campo obbligatorio",
-    "INVALID_EMAIL": "Email non valida",
-    "BACK": "Indietro",
-    "OPTIONAL": "(Opzionale)"
+    "ERR_FILE_REQUIRED": "Il file è obbligatorio."
   },
   "SHOP": {
     "TITLE": "Soluzioni tecniche",
     "SUBTITLE": "Prodotti pronti che risolvono problemi pratici",
     "ADD_CART": "Aggiungi al Carrello",
-    "BACK": "Torna allo Shop",
-    "NOT_FOUND": "Prodotto non trovato."
+    "BACK": "Torna allo Shop"
   },
   "ABOUT": {
     "TITLE": "Chi Siamo",
@@ -212,10 +129,7 @@
     "ERR_MAX_FILES": "Limite massimo di 15 file raggiunto.",
     "SUCCESS_TITLE": "Messaggio Inviato con Successo",
     "SUCCESS_DESC": "Grazie per averci contattato. Abbiamo ricevuto il tuo messaggio e ti invieremo una email di riepilogo a breve.",
-    "SEND_ANOTHER": "Invia un altro messaggio",
-    "HERO_SUBTITLE": "Siamo qui per aiutarti. Compila il modulo sottostante per qualsiasi richiesta.",
-    "FILE_TYPE_PDF": "PDF",
-    "FILE_TYPE_3D": "3D"
+    "SEND_ANOTHER": "Invia un altro messaggio"
   },
   "CHECKOUT": {
     "TITLE": "Checkout",
@@ -223,41 +137,36 @@
     "CONTACT_INFO": "Informazioni di Contatto",
     "BILLING_ADDR": "Indirizzo di Fatturazione",
     "SHIPPING_ADDR": "Indirizzo di Spedizione",
+    "SHIPPING_SAME": "Indirizzo di spedizione uguale a quello di fatturazione",
+    "ORDER_SUMMARY": "Riepilogo Ordine",
+    "SUBTOTAL": "Subtotale",
+    "SETUP_FEE": "Costo Setup",
+    "SHIPPING": "Spedizione",
+    "TOTAL": "Totale",
+    "PLACE_ORDER": "Conferma Ordine",
+    "PROCESSING": "Elaborazione...",
+    "PRIVATE": "Privato",
+    "COMPANY": "Azienda",
     "FIRST_NAME": "Nome",
     "LAST_NAME": "Cognome",
     "EMAIL": "Email",
     "PHONE": "Telefono",
     "COMPANY_NAME": "Nome Azienda",
-    "ADDRESS_1": "Indirizzo (Via e numero)",
-    "ADDRESS_2": "Informazioni aggiuntive (opzionale)",
+    "ADDRESS_1": "Indirizzo riga 1",
+    "ADDRESS_2": "Indirizzo riga 2 (Opzionale)",
     "ZIP": "CAP",
     "CITY": "Città",
-    "COUNTRY": "Paese",
-    "SHIPPING_SAME": "L'indirizzo di spedizione è lo stesso di quello di fatturazione",
-    "PLACE_ORDER": "Invia Ordine",
-    "PROCESSING": "Elaborazione...",
-    "SUMMARY_TITLE": "Riepilogo Ordine",
-    "SUBTOTAL": "Subtotale",
-    "SETUP_FEE": "Costo di Avvio",
-    "TOTAL": "Totale",
-    "QTY": "Qtà",
-    "SHIPPING": "Spedizione",
-    "INVALID_EMAIL": "Email non valida",
-    "COMPANY_OPTIONAL": "Nome Azienda (Opzionale)",
-    "REF_PERSON_OPTIONAL": "Persona di Riferimento (Opzionale)"
+    "COUNTRY": "Paese"
   },
   "PAYMENT": {
     "TITLE": "Pagamento",
     "METHOD": "Metodo di Pagamento",
     "TWINT_TITLE": "Paga con TWINT",
     "TWINT_DESC": "Inquadra il codice con l'app TWINT",
-    "TWINT_OPEN": "Apri direttamente in TWINT",
-    "TWINT_LINK": "Apri link di pagamento",
     "BANK_TITLE": "Bonifico Bancario",
     "BANK_OWNER": "Titolare",
     "BANK_IBAN": "IBAN",
     "BANK_REF": "Riferimento",
-    "BILLING_INFO_HINT": "Aggiungi le informazioni uguali a quelle della fatturazione.",
     "DOWNLOAD_QR": "Scarica QR-Fattura (PDF)",
     "CONFIRM": "Conferma Ordine",
     "SUMMARY_TITLE": "Riepilogo Ordine",
@@ -265,18 +174,6 @@
     "SHIPPING": "Spedizione",
     "SETUP_FEE": "Costo Setup",
     "TOTAL": "Totale",
-    "LOADING": "Caricamento dettagli ordine...",
-    "METHOD_TWINT": "TWINT",
-    "METHOD_BANK": "Fattura QR / Bonifico"
-  },
-  "ORDER_CONFIRMED": {
-    "TITLE": "Ordine Confermato",
-    "SUBTITLE": "Pagamento registrato. Il tuo ordine è ora in elaborazione.",
-    "STATUS": "In elaborazione",
-    "HEADING": "Stiamo preparando il tuo ordine",
-    "ORDER_REF": "Riferimento ordine",
-    "PROCESSING_TEXT": "Non appena confermiamo il pagamento, il tuo ordine passerà in produzione.",
-    "EMAIL_TEXT": "Ti invieremo una email con aggiornamento stato e prossimi step.",
-    "BACK_HOME": "Torna alla Home"
+    "LOADING": "Caricamento dettagli ordine..."
   }
 }