feat(back-end front-end): shop improvements

2026-03-13 16:16:49 +01:00
parent fcdede2dd6
commit 00af9a9701
39 changed files with 1886 additions and 299 deletions
--- a/backend/src/main/java/com/printcalculator/controller/OptionsController.java
+++ b/backend/src/main/java/com/printcalculator/controller/OptionsController.java
@@ -94,6 +94,10 @@ public class OptionsController {
                                    v.getId(),
                                    v.getVariantDisplayName(),
                                    v.getColorName(),
+                                    v.getColorLabelIt(),
+                                    v.getColorLabelEn(),
+                                    v.getColorLabelDe(),
+                                    v.getColorLabelFr(),
                                    resolveHexColor(v),
                                    v.getFinishType() != null ? v.getFinishType() : "GLOSSY",
                                    v.getStockSpools() != null ? v.getStockSpools().doubleValue() : 0d,
--- a/backend/src/main/java/com/printcalculator/dto/AdminFilamentVariantDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminFilamentVariantDto.java
@@ -12,6 +12,10 @@ public class AdminFilamentVariantDto {
    private String materialTechnicalTypeLabel;
    private String variantDisplayName;
    private String colorName;
+    private String colorLabelIt;
+    private String colorLabelEn;
+    private String colorLabelDe;
+    private String colorLabelFr;
    private String colorHex;
    private String finishType;
    private String brand;
@@ -89,6 +93,38 @@ public class AdminFilamentVariantDto {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminShopCategoryDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminShopCategoryDto.java
@@ -10,9 +10,25 @@ public class AdminShopCategoryDto {
    private String parentCategoryName;
    private String slug;
    private String name;
+    private String nameIt;
+    private String nameEn;
+    private String nameDe;
+    private String nameFr;
    private String description;
+    private String descriptionIt;
+    private String descriptionEn;
+    private String descriptionDe;
+    private String descriptionFr;
    private String seoTitle;
+    private String seoTitleIt;
+    private String seoTitleEn;
+    private String seoTitleDe;
+    private String seoTitleFr;
    private String seoDescription;
+    private String seoDescriptionIt;
+    private String seoDescriptionEn;
+    private String seoDescriptionDe;
+    private String seoDescriptionFr;
    private String ogTitle;
    private String ogDescription;
    private Boolean indexable;
@@ -69,6 +85,38 @@ public class AdminShopCategoryDto {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -77,6 +125,38 @@ public class AdminShopCategoryDto {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
@@ -85,6 +165,38 @@ public class AdminShopCategoryDto {
        this.seoTitle = seoTitle;
    }

+    public String getSeoTitleIt() {
+        return seoTitleIt;
+    }
+
+    public void setSeoTitleIt(String seoTitleIt) {
+        this.seoTitleIt = seoTitleIt;
+    }
+
+    public String getSeoTitleEn() {
+        return seoTitleEn;
+    }
+
+    public void setSeoTitleEn(String seoTitleEn) {
+        this.seoTitleEn = seoTitleEn;
+    }
+
+    public String getSeoTitleDe() {
+        return seoTitleDe;
+    }
+
+    public void setSeoTitleDe(String seoTitleDe) {
+        this.seoTitleDe = seoTitleDe;
+    }
+
+    public String getSeoTitleFr() {
+        return seoTitleFr;
+    }
+
+    public void setSeoTitleFr(String seoTitleFr) {
+        this.seoTitleFr = seoTitleFr;
+    }
+
    public String getSeoDescription() {
        return seoDescription;
    }
@@ -93,6 +205,38 @@ public class AdminShopCategoryDto {
        this.seoDescription = seoDescription;
    }

+    public String getSeoDescriptionIt() {
+        return seoDescriptionIt;
+    }
+
+    public void setSeoDescriptionIt(String seoDescriptionIt) {
+        this.seoDescriptionIt = seoDescriptionIt;
+    }
+
+    public String getSeoDescriptionEn() {
+        return seoDescriptionEn;
+    }
+
+    public void setSeoDescriptionEn(String seoDescriptionEn) {
+        this.seoDescriptionEn = seoDescriptionEn;
+    }
+
+    public String getSeoDescriptionDe() {
+        return seoDescriptionDe;
+    }
+
+    public void setSeoDescriptionDe(String seoDescriptionDe) {
+        this.seoDescriptionDe = seoDescriptionDe;
+    }
+
+    public String getSeoDescriptionFr() {
+        return seoDescriptionFr;
+    }
+
+    public void setSeoDescriptionFr(String seoDescriptionFr) {
+        this.seoDescriptionFr = seoDescriptionFr;
+    }
+
    public String getOgTitle() {
        return ogTitle;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminShopProductVariantDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminShopProductVariantDto.java
@@ -9,6 +9,10 @@ public class AdminShopProductVariantDto {
    private String sku;
    private String variantLabel;
    private String colorName;
+    private String colorLabelIt;
+    private String colorLabelEn;
+    private String colorLabelDe;
+    private String colorLabelFr;
    private String colorHex;
    private String internalMaterialCode;
    private BigDecimal priceChf;
@@ -50,6 +54,38 @@ public class AdminShopProductVariantDto {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminUpsertFilamentVariantRequest.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminUpsertFilamentVariantRequest.java
@@ -6,6 +6,10 @@ public class AdminUpsertFilamentVariantRequest {
    private Long materialTypeId;
    private String variantDisplayName;
    private String colorName;
+    private String colorLabelIt;
+    private String colorLabelEn;
+    private String colorLabelDe;
+    private String colorLabelFr;
    private String colorHex;
    private String finishType;
    private String brand;
@@ -40,6 +44,38 @@ public class AdminUpsertFilamentVariantRequest {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopCategoryRequest.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopCategoryRequest.java
@@ -6,9 +6,25 @@ public class AdminUpsertShopCategoryRequest {
    private UUID parentCategoryId;
    private String slug;
    private String name;
+    private String nameIt;
+    private String nameEn;
+    private String nameDe;
+    private String nameFr;
    private String description;
+    private String descriptionIt;
+    private String descriptionEn;
+    private String descriptionDe;
+    private String descriptionFr;
    private String seoTitle;
+    private String seoTitleIt;
+    private String seoTitleEn;
+    private String seoTitleDe;
+    private String seoTitleFr;
    private String seoDescription;
+    private String seoDescriptionIt;
+    private String seoDescriptionEn;
+    private String seoDescriptionDe;
+    private String seoDescriptionFr;
    private String ogTitle;
    private String ogDescription;
    private Boolean indexable;
@@ -39,6 +55,38 @@ public class AdminUpsertShopCategoryRequest {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -47,6 +95,38 @@ public class AdminUpsertShopCategoryRequest {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
@@ -55,6 +135,38 @@ public class AdminUpsertShopCategoryRequest {
        this.seoTitle = seoTitle;
    }

+    public String getSeoTitleIt() {
+        return seoTitleIt;
+    }
+
+    public void setSeoTitleIt(String seoTitleIt) {
+        this.seoTitleIt = seoTitleIt;
+    }
+
+    public String getSeoTitleEn() {
+        return seoTitleEn;
+    }
+
+    public void setSeoTitleEn(String seoTitleEn) {
+        this.seoTitleEn = seoTitleEn;
+    }
+
+    public String getSeoTitleDe() {
+        return seoTitleDe;
+    }
+
+    public void setSeoTitleDe(String seoTitleDe) {
+        this.seoTitleDe = seoTitleDe;
+    }
+
+    public String getSeoTitleFr() {
+        return seoTitleFr;
+    }
+
+    public void setSeoTitleFr(String seoTitleFr) {
+        this.seoTitleFr = seoTitleFr;
+    }
+
    public String getSeoDescription() {
        return seoDescription;
    }
@@ -63,6 +175,38 @@ public class AdminUpsertShopCategoryRequest {
        this.seoDescription = seoDescription;
    }

+    public String getSeoDescriptionIt() {
+        return seoDescriptionIt;
+    }
+
+    public void setSeoDescriptionIt(String seoDescriptionIt) {
+        this.seoDescriptionIt = seoDescriptionIt;
+    }
+
+    public String getSeoDescriptionEn() {
+        return seoDescriptionEn;
+    }
+
+    public void setSeoDescriptionEn(String seoDescriptionEn) {
+        this.seoDescriptionEn = seoDescriptionEn;
+    }
+
+    public String getSeoDescriptionDe() {
+        return seoDescriptionDe;
+    }
+
+    public void setSeoDescriptionDe(String seoDescriptionDe) {
+        this.seoDescriptionDe = seoDescriptionDe;
+    }
+
+    public String getSeoDescriptionFr() {
+        return seoDescriptionFr;
+    }
+
+    public void setSeoDescriptionFr(String seoDescriptionFr) {
+        this.seoDescriptionFr = seoDescriptionFr;
+    }
+
    public String getOgTitle() {
        return ogTitle;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopProductVariantRequest.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopProductVariantRequest.java
@@ -8,6 +8,10 @@ public class AdminUpsertShopProductVariantRequest {
    private String sku;
    private String variantLabel;
    private String colorName;
+    private String colorLabelIt;
+    private String colorLabelEn;
+    private String colorLabelDe;
+    private String colorLabelFr;
    private String colorHex;
    private String internalMaterialCode;
    private BigDecimal priceChf;
@@ -47,6 +51,38 @@ public class AdminUpsertShopProductVariantRequest {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
--- a/backend/src/main/java/com/printcalculator/dto/OptionsResponse.java
+++ b/backend/src/main/java/com/printcalculator/dto/OptionsResponse.java
@@ -15,6 +15,10 @@ public record OptionsResponse(
            Long id,
            String name,
            String colorName,
+            String colorLabelIt,
+            String colorLabelEn,
+            String colorLabelDe,
+            String colorLabelFr,
            String hexColor,
            String finishType,
            Double stockSpools,
--- a/backend/src/main/java/com/printcalculator/dto/OrderItemDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/OrderItemDto.java
@@ -17,9 +17,17 @@ public class OrderItemDto {
    private String shopProductName;
    private String shopVariantLabel;
    private String shopVariantColorName;
+    private String shopVariantColorLabelIt;
+    private String shopVariantColorLabelEn;
+    private String shopVariantColorLabelDe;
+    private String shopVariantColorLabelFr;
    private String shopVariantColorHex;
    private String filamentVariantDisplayName;
    private String filamentColorName;
+    private String filamentColorLabelIt;
+    private String filamentColorLabelEn;
+    private String filamentColorLabelDe;
+    private String filamentColorLabelFr;
    private String filamentColorHex;
    private String quality;
    private BigDecimal nozzleDiameterMm;
@@ -73,6 +81,18 @@ public class OrderItemDto {
    public String getShopVariantColorName() { return shopVariantColorName; }
    public void setShopVariantColorName(String shopVariantColorName) { this.shopVariantColorName = shopVariantColorName; }

+    public String getShopVariantColorLabelIt() { return shopVariantColorLabelIt; }
+    public void setShopVariantColorLabelIt(String shopVariantColorLabelIt) { this.shopVariantColorLabelIt = shopVariantColorLabelIt; }
+
+    public String getShopVariantColorLabelEn() { return shopVariantColorLabelEn; }
+    public void setShopVariantColorLabelEn(String shopVariantColorLabelEn) { this.shopVariantColorLabelEn = shopVariantColorLabelEn; }
+
+    public String getShopVariantColorLabelDe() { return shopVariantColorLabelDe; }
+    public void setShopVariantColorLabelDe(String shopVariantColorLabelDe) { this.shopVariantColorLabelDe = shopVariantColorLabelDe; }
+
+    public String getShopVariantColorLabelFr() { return shopVariantColorLabelFr; }
+    public void setShopVariantColorLabelFr(String shopVariantColorLabelFr) { this.shopVariantColorLabelFr = shopVariantColorLabelFr; }
+
    public String getShopVariantColorHex() { return shopVariantColorHex; }
    public void setShopVariantColorHex(String shopVariantColorHex) { this.shopVariantColorHex = shopVariantColorHex; }

@@ -82,6 +102,18 @@ public class OrderItemDto {
    public String getFilamentColorName() { return filamentColorName; }
    public void setFilamentColorName(String filamentColorName) { this.filamentColorName = filamentColorName; }

+    public String getFilamentColorLabelIt() { return filamentColorLabelIt; }
+    public void setFilamentColorLabelIt(String filamentColorLabelIt) { this.filamentColorLabelIt = filamentColorLabelIt; }
+
+    public String getFilamentColorLabelEn() { return filamentColorLabelEn; }
+    public void setFilamentColorLabelEn(String filamentColorLabelEn) { this.filamentColorLabelEn = filamentColorLabelEn; }
+
+    public String getFilamentColorLabelDe() { return filamentColorLabelDe; }
+    public void setFilamentColorLabelDe(String filamentColorLabelDe) { this.filamentColorLabelDe = filamentColorLabelDe; }
+
+    public String getFilamentColorLabelFr() { return filamentColorLabelFr; }
+    public void setFilamentColorLabelFr(String filamentColorLabelFr) { this.filamentColorLabelFr = filamentColorLabelFr; }
+
    public String getFilamentColorHex() { return filamentColorHex; }
    public void setFilamentColorHex(String filamentColorHex) { this.filamentColorHex = filamentColorHex; }

--- a/backend/src/main/java/com/printcalculator/dto/ShopProductVariantOptionDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/ShopProductVariantOptionDto.java
@@ -8,6 +8,7 @@ public record ShopProductVariantOptionDto(
        String sku,
        String variantLabel,
        String colorName,
+        String colorLabel,
        String colorHex,
        BigDecimal priceChf,
        Boolean isDefault
--- a/backend/src/main/java/com/printcalculator/entity/FilamentVariant.java
+++ b/backend/src/main/java/com/printcalculator/entity/FilamentVariant.java
@@ -24,6 +24,18 @@ public class FilamentVariant {
    @Column(name = "color_name", nullable = false, length = Integer.MAX_VALUE)
    private String colorName;

+    @Column(name = "color_label_it", length = Integer.MAX_VALUE)
+    private String colorLabelIt;
+
+    @Column(name = "color_label_en", length = Integer.MAX_VALUE)
+    private String colorLabelEn;
+
+    @Column(name = "color_label_de", length = Integer.MAX_VALUE)
+    private String colorLabelDe;
+
+    @Column(name = "color_label_fr", length = Integer.MAX_VALUE)
+    private String colorLabelFr;
+
    @Column(name = "color_hex", length = Integer.MAX_VALUE)
    private String colorHex;

@@ -93,6 +105,38 @@ public class FilamentVariant {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
@@ -173,4 +217,60 @@ public class FilamentVariant {
        this.createdAt = createdAt;
    }

+    public String getColorLabelForLanguage(String language) {
+        return resolveLocalizedValue(
+                language,
+                colorName,
+                colorLabelIt,
+                colorLabelEn,
+                colorLabelDe,
+                colorLabelFr
+        );
+    }
+
+    private String resolveLocalizedValue(String language,
+                                         String fallback,
+                                         String valueIt,
+                                         String valueEn,
+                                         String valueDe,
+                                         String valueFr) {
+        String normalizedLanguage = normalizeLanguage(language);
+        String preferred = switch (normalizedLanguage) {
+            case "it" -> valueIt;
+            case "en" -> valueEn;
+            case "de" -> valueDe;
+            case "fr" -> valueFr;
+            default -> null;
+        };
+        String resolved = firstNonBlank(preferred, fallback);
+        if (resolved != null) {
+            return resolved;
+        }
+        return firstNonBlank(valueIt, valueEn, valueDe, valueFr);
+    }
+
+    private String normalizeLanguage(String language) {
+        if (language == null) {
+            return "";
+        }
+        String normalized = language.trim().toLowerCase();
+        int separatorIndex = normalized.indexOf('-');
+        if (separatorIndex > 0) {
+            normalized = normalized.substring(0, separatorIndex);
+        }
+        return normalized;
+    }
+
+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
+
 }
--- a/backend/src/main/java/com/printcalculator/entity/ShopCategory.java
+++ b/backend/src/main/java/com/printcalculator/entity/ShopCategory.java
@@ -15,6 +15,7 @@ import jakarta.persistence.Table;
 import org.hibernate.annotations.ColumnDefault;

 import java.time.OffsetDateTime;
+import java.util.List;
 import java.util.UUID;

@Entity
@@ -23,6 +24,8 @@ import java.util.UUID;
        @Index(name = "ix_shop_category_active_sort", columnList = "is_active, sort_order")
 })
 public class ShopCategory {
+    public static final List<String> SUPPORTED_LANGUAGES = List.of("it", "en", "de", "fr");
+
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "shop_category_id", nullable = false)
@@ -38,15 +41,63 @@ public class ShopCategory {
    @Column(name = "name", nullable = false, length = Integer.MAX_VALUE)
    private String name;

+    @Column(name = "name_it", length = Integer.MAX_VALUE)
+    private String nameIt;
+
+    @Column(name = "name_en", length = Integer.MAX_VALUE)
+    private String nameEn;
+
+    @Column(name = "name_de", length = Integer.MAX_VALUE)
+    private String nameDe;
+
+    @Column(name = "name_fr", length = Integer.MAX_VALUE)
+    private String nameFr;
+
    @Column(name = "description", length = Integer.MAX_VALUE)
    private String description;

+    @Column(name = "description_it", length = Integer.MAX_VALUE)
+    private String descriptionIt;
+
+    @Column(name = "description_en", length = Integer.MAX_VALUE)
+    private String descriptionEn;
+
+    @Column(name = "description_de", length = Integer.MAX_VALUE)
+    private String descriptionDe;
+
+    @Column(name = "description_fr", length = Integer.MAX_VALUE)
+    private String descriptionFr;
+
    @Column(name = "seo_title", length = Integer.MAX_VALUE)
    private String seoTitle;

+    @Column(name = "seo_title_it", length = Integer.MAX_VALUE)
+    private String seoTitleIt;
+
+    @Column(name = "seo_title_en", length = Integer.MAX_VALUE)
+    private String seoTitleEn;
+
+    @Column(name = "seo_title_de", length = Integer.MAX_VALUE)
+    private String seoTitleDe;
+
+    @Column(name = "seo_title_fr", length = Integer.MAX_VALUE)
+    private String seoTitleFr;
+
    @Column(name = "seo_description", length = Integer.MAX_VALUE)
    private String seoDescription;

+    @Column(name = "seo_description_it", length = Integer.MAX_VALUE)
+    private String seoDescriptionIt;
+
+    @Column(name = "seo_description_en", length = Integer.MAX_VALUE)
+    private String seoDescriptionEn;
+
+    @Column(name = "seo_description_de", length = Integer.MAX_VALUE)
+    private String seoDescriptionDe;
+
+    @Column(name = "seo_description_fr", length = Integer.MAX_VALUE)
+    private String seoDescriptionFr;
+
    @Column(name = "og_title", length = Integer.MAX_VALUE)
    private String ogTitle;

@@ -139,6 +190,38 @@ public class ShopCategory {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -147,6 +230,38 @@ public class ShopCategory {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
@@ -155,6 +270,38 @@ public class ShopCategory {
        this.seoTitle = seoTitle;
    }

+    public String getSeoTitleIt() {
+        return seoTitleIt;
+    }
+
+    public void setSeoTitleIt(String seoTitleIt) {
+        this.seoTitleIt = seoTitleIt;
+    }
+
+    public String getSeoTitleEn() {
+        return seoTitleEn;
+    }
+
+    public void setSeoTitleEn(String seoTitleEn) {
+        this.seoTitleEn = seoTitleEn;
+    }
+
+    public String getSeoTitleDe() {
+        return seoTitleDe;
+    }
+
+    public void setSeoTitleDe(String seoTitleDe) {
+        this.seoTitleDe = seoTitleDe;
+    }
+
+    public String getSeoTitleFr() {
+        return seoTitleFr;
+    }
+
+    public void setSeoTitleFr(String seoTitleFr) {
+        this.seoTitleFr = seoTitleFr;
+    }
+
    public String getSeoDescription() {
        return seoDescription;
    }
@@ -163,6 +310,38 @@ public class ShopCategory {
        this.seoDescription = seoDescription;
    }

+    public String getSeoDescriptionIt() {
+        return seoDescriptionIt;
+    }
+
+    public void setSeoDescriptionIt(String seoDescriptionIt) {
+        this.seoDescriptionIt = seoDescriptionIt;
+    }
+
+    public String getSeoDescriptionEn() {
+        return seoDescriptionEn;
+    }
+
+    public void setSeoDescriptionEn(String seoDescriptionEn) {
+        this.seoDescriptionEn = seoDescriptionEn;
+    }
+
+    public String getSeoDescriptionDe() {
+        return seoDescriptionDe;
+    }
+
+    public void setSeoDescriptionDe(String seoDescriptionDe) {
+        this.seoDescriptionDe = seoDescriptionDe;
+    }
+
+    public String getSeoDescriptionFr() {
+        return seoDescriptionFr;
+    }
+
+    public void setSeoDescriptionFr(String seoDescriptionFr) {
+        this.seoDescriptionFr = seoDescriptionFr;
+    }
+
    public String getOgTitle() {
        return ogTitle;
    }
@@ -218,4 +397,109 @@ public class ShopCategory {
    public void setUpdatedAt(OffsetDateTime updatedAt) {
        this.updatedAt = updatedAt;
    }
+
+    public String getNameForLanguage(String language) {
+        return resolveLocalizedValue(language, name, nameIt, nameEn, nameDe, nameFr);
+    }
+
+    public void setNameForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> nameIt = value;
+            case "en" -> nameEn = value;
+            case "de" -> nameDe = value;
+            case "fr" -> nameFr = value;
+            default -> {
+            }
+        }
+    }
+
+    public String getDescriptionForLanguage(String language) {
+        return resolveLocalizedValue(language, description, descriptionIt, descriptionEn, descriptionDe, descriptionFr);
+    }
+
+    public void setDescriptionForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> descriptionIt = value;
+            case "en" -> descriptionEn = value;
+            case "de" -> descriptionDe = value;
+            case "fr" -> descriptionFr = value;
+            default -> {
+            }
+        }
+    }
+
+    public String getSeoTitleForLanguage(String language) {
+        return resolveLocalizedValue(language, seoTitle, seoTitleIt, seoTitleEn, seoTitleDe, seoTitleFr);
+    }
+
+    public void setSeoTitleForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> seoTitleIt = value;
+            case "en" -> seoTitleEn = value;
+            case "de" -> seoTitleDe = value;
+            case "fr" -> seoTitleFr = value;
+            default -> {
+            }
+        }
+    }
+
+    public String getSeoDescriptionForLanguage(String language) {
+        return resolveLocalizedValue(language, seoDescription, seoDescriptionIt, seoDescriptionEn, seoDescriptionDe, seoDescriptionFr);
+    }
+
+    public void setSeoDescriptionForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> seoDescriptionIt = value;
+            case "en" -> seoDescriptionEn = value;
+            case "de" -> seoDescriptionDe = value;
+            case "fr" -> seoDescriptionFr = value;
+            default -> {
+            }
+        }
+    }
+
+    private String resolveLocalizedValue(String language,
+                                         String fallback,
+                                         String valueIt,
+                                         String valueEn,
+                                         String valueDe,
+                                         String valueFr) {
+        String normalizedLanguage = normalizeLanguage(language);
+        String preferred = switch (normalizedLanguage) {
+            case "it" -> valueIt;
+            case "en" -> valueEn;
+            case "de" -> valueDe;
+            case "fr" -> valueFr;
+            default -> null;
+        };
+        String resolved = firstNonBlank(preferred, fallback);
+        if (resolved != null) {
+            return resolved;
+        }
+        return firstNonBlank(valueIt, valueEn, valueDe, valueFr);
+    }
+
+    private String normalizeLanguage(String language) {
+        if (language == null) {
+            return "";
+        }
+        String normalized = language.trim().toLowerCase();
+        int separatorIndex = normalized.indexOf('-');
+        if (separatorIndex > 0) {
+            normalized = normalized.substring(0, separatorIndex);
+        }
+        return normalized;
+    }
+
+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
 }
--- a/backend/src/main/java/com/printcalculator/entity/ShopProductVariant.java
+++ b/backend/src/main/java/com/printcalculator/entity/ShopProductVariant.java
@@ -42,6 +42,18 @@ public class ShopProductVariant {
    @Column(name = "color_name", nullable = false, length = Integer.MAX_VALUE)
    private String colorName;

+    @Column(name = "color_label_it", length = Integer.MAX_VALUE)
+    private String colorLabelIt;
+
+    @Column(name = "color_label_en", length = Integer.MAX_VALUE)
+    private String colorLabelEn;
+
+    @Column(name = "color_label_de", length = Integer.MAX_VALUE)
+    private String colorLabelDe;
+
+    @Column(name = "color_label_fr", length = Integer.MAX_VALUE)
+    private String colorLabelFr;
+
    @Column(name = "color_hex", length = Integer.MAX_VALUE)
    private String colorHex;

@@ -152,6 +164,38 @@ public class ShopProductVariant {
        this.colorName = colorName;
    }

+    public String getColorLabelIt() {
+        return colorLabelIt;
+    }
+
+    public void setColorLabelIt(String colorLabelIt) {
+        this.colorLabelIt = colorLabelIt;
+    }
+
+    public String getColorLabelEn() {
+        return colorLabelEn;
+    }
+
+    public void setColorLabelEn(String colorLabelEn) {
+        this.colorLabelEn = colorLabelEn;
+    }
+
+    public String getColorLabelDe() {
+        return colorLabelDe;
+    }
+
+    public void setColorLabelDe(String colorLabelDe) {
+        this.colorLabelDe = colorLabelDe;
+    }
+
+    public String getColorLabelFr() {
+        return colorLabelFr;
+    }
+
+    public void setColorLabelFr(String colorLabelFr) {
+        this.colorLabelFr = colorLabelFr;
+    }
+
    public String getColorHex() {
        return colorHex;
    }
@@ -215,4 +259,60 @@ public class ShopProductVariant {
    public void setUpdatedAt(OffsetDateTime updatedAt) {
        this.updatedAt = updatedAt;
    }
+
+    public String getColorLabelForLanguage(String language) {
+        return resolveLocalizedValue(
+                language,
+                colorName,
+                colorLabelIt,
+                colorLabelEn,
+                colorLabelDe,
+                colorLabelFr
+        );
+    }
+
+    private String resolveLocalizedValue(String language,
+                                         String fallback,
+                                         String valueIt,
+                                         String valueEn,
+                                         String valueDe,
+                                         String valueFr) {
+        String normalizedLanguage = normalizeLanguage(language);
+        String preferred = switch (normalizedLanguage) {
+            case "it" -> valueIt;
+            case "en" -> valueEn;
+            case "de" -> valueDe;
+            case "fr" -> valueFr;
+            default -> null;
+        };
+        String resolved = firstNonBlank(preferred, fallback);
+        if (resolved != null) {
+            return resolved;
+        }
+        return firstNonBlank(valueIt, valueEn, valueDe, valueFr);
+    }
+
+    private String normalizeLanguage(String language) {
+        if (language == null) {
+            return "";
+        }
+        String normalized = language.trim().toLowerCase();
+        int separatorIndex = normalized.indexOf('-');
+        if (separatorIndex > 0) {
+            normalized = normalized.substring(0, separatorIndex);
+        }
+        return normalized;
+    }
+
+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
 }
--- a/backend/src/main/java/com/printcalculator/service/admin/AdminFilamentControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/admin/AdminFilamentControllerService.java
@@ -161,10 +161,21 @@ public class AdminFilamentControllerService {
        String normalizedColorHex = normalizeAndValidateColorHex(payload.getColorHex());
        String normalizedFinishType = normalizeAndValidateFinishType(payload.getFinishType(), payload.getIsMatte());
        String normalizedBrand = normalizeOptional(payload.getBrand());
+        String fallbackColorLabel = firstNonBlank(
+                normalizeOptional(payload.getColorLabelIt()),
+                normalizeOptional(payload.getColorLabelEn()),
+                normalizeOptional(payload.getColorLabelDe()),
+                normalizeOptional(payload.getColorLabelFr()),
+                normalizedColorName
+        );

        variant.setFilamentMaterialType(material);
        variant.setVariantDisplayName(normalizedDisplayName);
        variant.setColorName(normalizedColorName);
+        variant.setColorLabelIt(firstNonBlank(normalizeOptional(payload.getColorLabelIt()), fallbackColorLabel));
+        variant.setColorLabelEn(firstNonBlank(normalizeOptional(payload.getColorLabelEn()), fallbackColorLabel));
+        variant.setColorLabelDe(firstNonBlank(normalizeOptional(payload.getColorLabelDe()), fallbackColorLabel));
+        variant.setColorLabelFr(firstNonBlank(normalizeOptional(payload.getColorLabelFr()), fallbackColorLabel));
        variant.setColorHex(normalizedColorHex);
        variant.setFinishType(normalizedFinishType);
        variant.setBrand(normalizedBrand);
@@ -226,6 +237,18 @@ public class AdminFilamentControllerService {
        return normalized.isBlank() ? null : normalized;
    }

+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
+
    private FilamentMaterialType validateAndResolveMaterial(AdminUpsertFilamentVariantRequest payload) {
        if (payload == null || payload.getMaterialTypeId() == null) {
            throw new ResponseStatusException(BAD_REQUEST, "Material type id is required");
@@ -306,6 +329,10 @@ public class AdminFilamentControllerService {

        dto.setVariantDisplayName(variant.getVariantDisplayName());
        dto.setColorName(variant.getColorName());
+        dto.setColorLabelIt(variant.getColorLabelIt());
+        dto.setColorLabelEn(variant.getColorLabelEn());
+        dto.setColorLabelDe(variant.getColorLabelDe());
+        dto.setColorLabelFr(variant.getColorLabelFr());
        dto.setColorHex(variant.getColorHex());
        dto.setFinishType(variant.getFinishType());
        dto.setBrand(variant.getBrand());
--- a/backend/src/main/java/com/printcalculator/service/admin/AdminShopCategoryControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/admin/AdminShopCategoryControllerService.java
@@ -67,13 +67,13 @@ public class AdminShopCategoryControllerService {
    @Transactional
    public AdminShopCategoryDto createCategory(AdminUpsertShopCategoryRequest payload) {
        ensurePayload(payload);
-        String normalizedName = normalizeRequiredName(payload.getName());
-        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), normalizedName);
+        LocalizedCategoryContent localizedContent = normalizeLocalizedCategoryContent(payload);
+        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), localizedContent.defaultName());
        ensureSlugAvailable(normalizedSlug, null);

        ShopCategory category = new ShopCategory();
        category.setCreatedAt(OffsetDateTime.now());
-        applyPayload(category, payload, normalizedName, normalizedSlug, null);
+        applyPayload(category, payload, localizedContent, normalizedSlug, null);

        ShopCategory saved = shopCategoryRepository.save(category);
        return getCategory(saved.getId());
@@ -86,11 +86,11 @@ public class AdminShopCategoryControllerService {
        ShopCategory category = shopCategoryRepository.findById(categoryId)
                .orElseThrow(() -> new ResponseStatusException(NOT_FOUND, "Shop category not found"));

-        String normalizedName = normalizeRequiredName(payload.getName());
-        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), normalizedName);
+        LocalizedCategoryContent localizedContent = normalizeLocalizedCategoryContent(payload);
+        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), localizedContent.defaultName());
        ensureSlugAvailable(normalizedSlug, category.getId());

-        applyPayload(category, payload, normalizedName, normalizedSlug, category.getId());
+        applyPayload(category, payload, localizedContent, normalizedSlug, category.getId());
        ShopCategory saved = shopCategoryRepository.save(category);
        return getCategory(saved.getId());
    }
@@ -112,17 +112,33 @@ public class AdminShopCategoryControllerService {

    private void applyPayload(ShopCategory category,
                              AdminUpsertShopCategoryRequest payload,
-                              String normalizedName,
+                              LocalizedCategoryContent localizedContent,
                              String normalizedSlug,
                              UUID currentCategoryId) {
        ShopCategory parentCategory = resolveParentCategory(payload.getParentCategoryId(), currentCategoryId);

        category.setParentCategory(parentCategory);
        category.setSlug(normalizedSlug);
-        category.setName(normalizedName);
-        category.setDescription(normalizeOptional(payload.getDescription()));
-        category.setSeoTitle(normalizeOptional(payload.getSeoTitle()));
-        category.setSeoDescription(normalizeOptional(payload.getSeoDescription()));
+        category.setName(localizedContent.defaultName());
+        category.setNameIt(localizedContent.names().get("it"));
+        category.setNameEn(localizedContent.names().get("en"));
+        category.setNameDe(localizedContent.names().get("de"));
+        category.setNameFr(localizedContent.names().get("fr"));
+        category.setDescription(localizedContent.defaultDescription());
+        category.setDescriptionIt(localizedContent.descriptions().get("it"));
+        category.setDescriptionEn(localizedContent.descriptions().get("en"));
+        category.setDescriptionDe(localizedContent.descriptions().get("de"));
+        category.setDescriptionFr(localizedContent.descriptions().get("fr"));
+        category.setSeoTitle(localizedContent.defaultSeoTitle());
+        category.setSeoTitleIt(localizedContent.seoTitles().get("it"));
+        category.setSeoTitleEn(localizedContent.seoTitles().get("en"));
+        category.setSeoTitleDe(localizedContent.seoTitles().get("de"));
+        category.setSeoTitleFr(localizedContent.seoTitles().get("fr"));
+        category.setSeoDescription(localizedContent.defaultSeoDescription());
+        category.setSeoDescriptionIt(localizedContent.seoDescriptions().get("it"));
+        category.setSeoDescriptionEn(localizedContent.seoDescriptions().get("en"));
+        category.setSeoDescriptionDe(localizedContent.seoDescriptions().get("de"));
+        category.setSeoDescriptionFr(localizedContent.seoDescriptions().get("fr"));
        category.setOgTitle(normalizeOptional(payload.getOgTitle()));
        category.setOgDescription(normalizeOptional(payload.getOgDescription()));
        category.setIndexable(payload.getIndexable() == null || payload.getIndexable());
@@ -161,14 +177,6 @@ public class AdminShopCategoryControllerService {
        }
    }

-    private String normalizeRequiredName(String name) {
-        String normalized = normalizeOptional(name);
-        if (normalized == null) {
-            throw new ResponseStatusException(BAD_REQUEST, "Category name is required");
-        }
-        return normalized;
-    }
-
    private String normalizeAndValidateSlug(String slug, String fallbackName) {
        String source = normalizeOptional(slug);
        if (source == null) {
@@ -203,6 +211,103 @@ public class AdminShopCategoryControllerService {
        return normalized.isBlank() ? null : normalized;
    }

+    private String normalizeRequired(String value, String message) {
+        String normalized = normalizeOptional(value);
+        if (normalized == null) {
+            throw new ResponseStatusException(BAD_REQUEST, message);
+        }
+        return normalized;
+    }
+
+    private LocalizedCategoryContent normalizeLocalizedCategoryContent(AdminUpsertShopCategoryRequest payload) {
+        String legacyName = normalizeOptional(payload.getName());
+        String fallbackName = firstNonBlank(
+                legacyName,
+                normalizeOptional(payload.getNameIt()),
+                normalizeOptional(payload.getNameEn()),
+                normalizeOptional(payload.getNameDe()),
+                normalizeOptional(payload.getNameFr())
+        );
+        if (fallbackName == null) {
+            throw new ResponseStatusException(BAD_REQUEST, "Category name is required");
+        }
+
+        Map<String, String> names = new LinkedHashMap<>();
+        names.put("it", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameIt()), fallbackName), "Italian category name is required"));
+        names.put("en", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameEn()), fallbackName), "English category name is required"));
+        names.put("de", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameDe()), fallbackName), "German category name is required"));
+        names.put("fr", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameFr()), fallbackName), "French category name is required"));
+
+        String fallbackDescription = firstNonBlank(
+                normalizeOptional(payload.getDescription()),
+                normalizeOptional(payload.getDescriptionIt()),
+                normalizeOptional(payload.getDescriptionEn()),
+                normalizeOptional(payload.getDescriptionDe()),
+                normalizeOptional(payload.getDescriptionFr())
+        );
+        Map<String, String> descriptions = new LinkedHashMap<>();
+        descriptions.put("it", firstNonBlank(normalizeOptional(payload.getDescriptionIt()), fallbackDescription));
+        descriptions.put("en", firstNonBlank(normalizeOptional(payload.getDescriptionEn()), fallbackDescription));
+        descriptions.put("de", firstNonBlank(normalizeOptional(payload.getDescriptionDe()), fallbackDescription));
+        descriptions.put("fr", firstNonBlank(normalizeOptional(payload.getDescriptionFr()), fallbackDescription));
+
+        String fallbackSeoTitle = firstNonBlank(
+                normalizeOptional(payload.getSeoTitle()),
+                normalizeOptional(payload.getSeoTitleIt()),
+                normalizeOptional(payload.getSeoTitleEn()),
+                normalizeOptional(payload.getSeoTitleDe()),
+                normalizeOptional(payload.getSeoTitleFr())
+        );
+        Map<String, String> seoTitles = new LinkedHashMap<>();
+        seoTitles.put("it", firstNonBlank(normalizeOptional(payload.getSeoTitleIt()), fallbackSeoTitle));
+        seoTitles.put("en", firstNonBlank(normalizeOptional(payload.getSeoTitleEn()), fallbackSeoTitle));
+        seoTitles.put("de", firstNonBlank(normalizeOptional(payload.getSeoTitleDe()), fallbackSeoTitle));
+        seoTitles.put("fr", firstNonBlank(normalizeOptional(payload.getSeoTitleFr()), fallbackSeoTitle));
+
+        String fallbackSeoDescription = firstNonBlank(
+                normalizeOptional(payload.getSeoDescription()),
+                normalizeOptional(payload.getSeoDescriptionIt()),
+                normalizeOptional(payload.getSeoDescriptionEn()),
+                normalizeOptional(payload.getSeoDescriptionDe()),
+                normalizeOptional(payload.getSeoDescriptionFr())
+        );
+        Map<String, String> seoDescriptions = new LinkedHashMap<>();
+        seoDescriptions.put("it", validateSeoDescriptionLength(firstNonBlank(normalizeOptional(payload.getSeoDescriptionIt()), fallbackSeoDescription), "Italian"));
+        seoDescriptions.put("en", validateSeoDescriptionLength(firstNonBlank(normalizeOptional(payload.getSeoDescriptionEn()), fallbackSeoDescription), "English"));
+        seoDescriptions.put("de", validateSeoDescriptionLength(firstNonBlank(normalizeOptional(payload.getSeoDescriptionDe()), fallbackSeoDescription), "German"));
+        seoDescriptions.put("fr", validateSeoDescriptionLength(firstNonBlank(normalizeOptional(payload.getSeoDescriptionFr()), fallbackSeoDescription), "French"));
+
+        return new LocalizedCategoryContent(
+                names.get("it"),
+                firstNonBlank(descriptions.get("it"), fallbackDescription),
+                firstNonBlank(seoTitles.get("it"), fallbackSeoTitle),
+                firstNonBlank(seoDescriptions.get("it"), fallbackSeoDescription),
+                names,
+                descriptions,
+                seoTitles,
+                seoDescriptions
+        );
+    }
+
+    private String validateSeoDescriptionLength(String value, String languageLabel) {
+        if (value != null && value.length() > 160) {
+            throw new ResponseStatusException(BAD_REQUEST, languageLabel + " SEO description must be at most 160 characters");
+        }
+        return value;
+    }
+
+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
+
    private CategoryContext buildContext() {
        List<ShopCategory> categories = shopCategoryRepository.findAllByOrderBySortOrderAscNameAsc();
        List<ShopProduct> products = shopProductRepository.findAll();
@@ -278,9 +383,25 @@ public class AdminShopCategoryControllerService {
        dto.setParentCategoryName(category.getParentCategory() != null ? category.getParentCategory().getName() : null);
        dto.setSlug(category.getSlug());
        dto.setName(category.getName());
+        dto.setNameIt(category.getNameIt());
+        dto.setNameEn(category.getNameEn());
+        dto.setNameDe(category.getNameDe());
+        dto.setNameFr(category.getNameFr());
        dto.setDescription(category.getDescription());
+        dto.setDescriptionIt(category.getDescriptionIt());
+        dto.setDescriptionEn(category.getDescriptionEn());
+        dto.setDescriptionDe(category.getDescriptionDe());
+        dto.setDescriptionFr(category.getDescriptionFr());
        dto.setSeoTitle(category.getSeoTitle());
+        dto.setSeoTitleIt(category.getSeoTitleIt());
+        dto.setSeoTitleEn(category.getSeoTitleEn());
+        dto.setSeoTitleDe(category.getSeoTitleDe());
+        dto.setSeoTitleFr(category.getSeoTitleFr());
        dto.setSeoDescription(category.getSeoDescription());
+        dto.setSeoDescriptionIt(category.getSeoDescriptionIt());
+        dto.setSeoDescriptionEn(category.getSeoDescriptionEn());
+        dto.setSeoDescriptionDe(category.getSeoDescriptionDe());
+        dto.setSeoDescriptionFr(category.getSeoDescriptionFr());
        dto.setOgTitle(category.getOgTitle());
        dto.setOgDescription(category.getOgDescription());
        dto.setIndexable(category.getIndexable());
@@ -331,4 +452,16 @@ public class AdminShopCategoryControllerService {
            Map<UUID, Integer> descendantProductCounts
    ) {
    }
+
+    private record LocalizedCategoryContent(
+            String defaultName,
+            String defaultDescription,
+            String defaultSeoTitle,
+            String defaultSeoDescription,
+            Map<String, String> names,
+            Map<String, String> descriptions,
+            Map<String, String> seoTitles,
+            Map<String, String> seoDescriptions
+    ) {
+    }
 }
--- a/backend/src/main/java/com/printcalculator/service/admin/AdminShopProductControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/admin/AdminShopProductControllerService.java
@@ -353,6 +353,13 @@ public class AdminShopProductControllerService {
        String normalizedColorName = normalizeRequired(payload.getColorName(), "Variant colorName is required");
        String normalizedVariantLabel = normalizeOptional(payload.getVariantLabel());
        String normalizedSku = normalizeOptional(payload.getSku());
+        String fallbackColorLabel = firstNonBlank(
+                normalizeOptional(payload.getColorLabelIt()),
+                normalizeOptional(payload.getColorLabelEn()),
+                normalizeOptional(payload.getColorLabelDe()),
+                normalizeOptional(payload.getColorLabelFr()),
+                normalizedColorName
+        );
        String normalizedMaterialCode = normalizeRequired(
                payload.getInternalMaterialCode(),
                "Variant internalMaterialCode is required"
@@ -380,6 +387,10 @@ public class AdminShopProductControllerService {
        variant.setSku(normalizedSku);
        variant.setVariantLabel(normalizedVariantLabel != null ? normalizedVariantLabel : normalizedColorName);
        variant.setColorName(normalizedColorName);
+        variant.setColorLabelIt(firstNonBlank(normalizeOptional(payload.getColorLabelIt()), fallbackColorLabel));
+        variant.setColorLabelEn(firstNonBlank(normalizeOptional(payload.getColorLabelEn()), fallbackColorLabel));
+        variant.setColorLabelDe(firstNonBlank(normalizeOptional(payload.getColorLabelDe()), fallbackColorLabel));
+        variant.setColorLabelFr(firstNonBlank(normalizeOptional(payload.getColorLabelFr()), fallbackColorLabel));
        variant.setColorHex(normalizeColorHex(payload.getColorHex()));
        variant.setInternalMaterialCode(normalizedMaterialCode);
        variant.setPriceChf(price);
@@ -531,6 +542,10 @@ public class AdminShopProductControllerService {
        dto.setSku(variant.getSku());
        dto.setVariantLabel(variant.getVariantLabel());
        dto.setColorName(variant.getColorName());
+        dto.setColorLabelIt(variant.getColorLabelIt());
+        dto.setColorLabelEn(variant.getColorLabelEn());
+        dto.setColorLabelDe(variant.getColorLabelDe());
+        dto.setColorLabelFr(variant.getColorLabelFr());
        dto.setColorHex(variant.getColorHex());
        dto.setInternalMaterialCode(variant.getInternalMaterialCode());
        dto.setPriceChf(variant.getPriceChf());
--- a/backend/src/main/java/com/printcalculator/service/order/AdminOrderControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/order/AdminOrderControllerService.java
@@ -280,11 +280,19 @@ public class AdminOrderControllerService {
            itemDto.setShopProductName(item.getShopProductName());
            itemDto.setShopVariantLabel(item.getShopVariantLabel());
            itemDto.setShopVariantColorName(item.getShopVariantColorName());
+            itemDto.setShopVariantColorLabelIt(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelIt() : null);
+            itemDto.setShopVariantColorLabelEn(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelEn() : null);
+            itemDto.setShopVariantColorLabelDe(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelDe() : null);
+            itemDto.setShopVariantColorLabelFr(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelFr() : null);
            itemDto.setShopVariantColorHex(item.getShopVariantColorHex());
            if (item.getFilamentVariant() != null) {
                itemDto.setFilamentVariantId(item.getFilamentVariant().getId());
                itemDto.setFilamentVariantDisplayName(item.getFilamentVariant().getVariantDisplayName());
                itemDto.setFilamentColorName(item.getFilamentVariant().getColorName());
+                itemDto.setFilamentColorLabelIt(item.getFilamentVariant().getColorLabelIt());
+                itemDto.setFilamentColorLabelEn(item.getFilamentVariant().getColorLabelEn());
+                itemDto.setFilamentColorLabelDe(item.getFilamentVariant().getColorLabelDe());
+                itemDto.setFilamentColorLabelFr(item.getFilamentVariant().getColorLabelFr());
                itemDto.setFilamentColorHex(item.getFilamentVariant().getColorHex());
            }
            itemDto.setQuality(item.getQuality());
--- a/backend/src/main/java/com/printcalculator/service/order/OrderControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/order/OrderControllerService.java
@@ -334,11 +334,19 @@ public class OrderControllerService {
            itemDto.setShopProductName(item.getShopProductName());
            itemDto.setShopVariantLabel(item.getShopVariantLabel());
            itemDto.setShopVariantColorName(item.getShopVariantColorName());
+            itemDto.setShopVariantColorLabelIt(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelIt() : null);
+            itemDto.setShopVariantColorLabelEn(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelEn() : null);
+            itemDto.setShopVariantColorLabelDe(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelDe() : null);
+            itemDto.setShopVariantColorLabelFr(item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelFr() : null);
            itemDto.setShopVariantColorHex(item.getShopVariantColorHex());
            if (item.getFilamentVariant() != null) {
                itemDto.setFilamentVariantId(item.getFilamentVariant().getId());
                itemDto.setFilamentVariantDisplayName(item.getFilamentVariant().getVariantDisplayName());
                itemDto.setFilamentColorName(item.getFilamentVariant().getColorName());
+                itemDto.setFilamentColorLabelIt(item.getFilamentVariant().getColorLabelIt());
+                itemDto.setFilamentColorLabelEn(item.getFilamentVariant().getColorLabelEn());
+                itemDto.setFilamentColorLabelDe(item.getFilamentVariant().getColorLabelDe());
+                itemDto.setFilamentColorLabelFr(item.getFilamentVariant().getColorLabelFr());
                itemDto.setFilamentColorHex(item.getFilamentVariant().getColorHex());
            }
            itemDto.setQuality(item.getQuality());
--- a/backend/src/main/java/com/printcalculator/service/quote/QuoteSessionResponseAssembler.java
+++ b/backend/src/main/java/com/printcalculator/service/quote/QuoteSessionResponseAssembler.java
@@ -81,7 +81,15 @@ public class QuoteSessionResponseAssembler {
        dto.put("shopProductName", item.getShopProductName());
        dto.put("shopVariantLabel", item.getShopVariantLabel());
        dto.put("shopVariantColorName", item.getShopVariantColorName());
+        dto.put("shopVariantColorLabelIt", item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelIt() : null);
+        dto.put("shopVariantColorLabelEn", item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelEn() : null);
+        dto.put("shopVariantColorLabelDe", item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelDe() : null);
+        dto.put("shopVariantColorLabelFr", item.getShopProductVariant() != null ? item.getShopProductVariant().getColorLabelFr() : null);
        dto.put("shopVariantColorHex", item.getShopVariantColorHex());
+        dto.put("filamentColorLabelIt", item.getFilamentVariant() != null ? item.getFilamentVariant().getColorLabelIt() : null);
+        dto.put("filamentColorLabelEn", item.getFilamentVariant() != null ? item.getFilamentVariant().getColorLabelEn() : null);
+        dto.put("filamentColorLabelDe", item.getFilamentVariant() != null ? item.getFilamentVariant().getColorLabelDe() : null);
+        dto.put("filamentColorLabelFr", item.getFilamentVariant() != null ? item.getFilamentVariant().getColorLabelFr() : null);
        dto.put("materialCode", item.getMaterialCode());
        dto.put("quality", item.getQuality());
        dto.put("nozzleDiameterMm", item.getNozzleDiameterMm());
--- a/backend/src/main/java/com/printcalculator/service/shop/PublicShopCatalogService.java
+++ b/backend/src/main/java/com/printcalculator/service/shop/PublicShopCatalogService.java
@@ -71,7 +71,7 @@ public class PublicShopCatalogService {

    public List<ShopCategoryTreeDto> getCategories(String language) {
        CategoryContext categoryContext = loadCategoryContext(language);
-        return buildCategoryTree(null, categoryContext);
+        return buildCategoryTree(null, categoryContext, language);
    }

    public ShopCategoryDetailDto getCategory(String slug, String language) {
@@ -83,7 +83,7 @@ public class PublicShopCatalogService {
            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Category not found");
        }

-        return buildCategoryDetail(category, categoryContext);
+        return buildCategoryDetail(category, categoryContext, language);
    }

    public ShopProductCatalogResponseDto getProductCatalog(String categorySlug, Boolean featuredOnly, String language) {
@@ -114,7 +114,7 @@ public class PublicShopCatalogService {
                .toList();

        ShopCategoryDetailDto selectedCategoryDetail = selectedCategory != null
-                ? buildCategoryDetail(selectedCategory, categoryContext)
+                ? buildCategoryDetail(selectedCategory, categoryContext, language)
                : null;

        return new ShopProductCatalogResponseDto(
@@ -316,53 +316,63 @@ public class PublicShopCatalogService {
        return total;
    }

-    private List<ShopCategoryTreeDto> buildCategoryTree(UUID parentId, CategoryContext categoryContext) {
+    private List<ShopCategoryTreeDto> buildCategoryTree(UUID parentId,
+                                                        CategoryContext categoryContext,
+                                                        String language) {
        return categoryContext.childrenByParentId().getOrDefault(parentId, List.of()).stream()
                .map(category -> new ShopCategoryTreeDto(
                        category.getId(),
                        category.getParentCategory() != null ? category.getParentCategory().getId() : null,
                        category.getSlug(),
-                        category.getName(),
-                        category.getDescription(),
-                        category.getSeoTitle(),
-                        category.getSeoDescription(),
+                        category.getNameForLanguage(language),
+                        category.getDescriptionForLanguage(language),
+                        category.getSeoTitleForLanguage(language),
+                        category.getSeoDescriptionForLanguage(language),
                        category.getOgTitle(),
                        category.getOgDescription(),
                        category.getIndexable(),
                        category.getSortOrder(),
                        categoryContext.descendantProductCounts().getOrDefault(category.getId(), 0),
                        selectPrimaryMedia(categoryContext.categoryMediaBySlug().get(categoryMediaUsageKey(category))),
-                        buildCategoryTree(category.getId(), categoryContext)
+                        buildCategoryTree(category.getId(), categoryContext, language)
                ))
                .toList();
    }

-    private ShopCategoryDetailDto buildCategoryDetail(ShopCategory category, CategoryContext categoryContext) {
+    private ShopCategoryDetailDto buildCategoryDetail(ShopCategory category,
+                                                      CategoryContext categoryContext,
+                                                      String language) {
        List<PublicMediaUsageDto> images = categoryContext.categoryMediaBySlug().getOrDefault(categoryMediaUsageKey(category), List.of());
+        String localizedSeoTitle = category.getSeoTitleForLanguage(language);
+        String localizedSeoDescription = category.getSeoDescriptionForLanguage(language);
        return new ShopCategoryDetailDto(
                category.getId(),
                category.getSlug(),
-                category.getName(),
-                category.getDescription(),
-                category.getSeoTitle(),
-                category.getSeoDescription(),
+                category.getNameForLanguage(language),
+                category.getDescriptionForLanguage(language),
+                localizedSeoTitle,
+                localizedSeoDescription,
                category.getOgTitle(),
                category.getOgDescription(),
                category.getIndexable(),
                category.getSortOrder(),
                categoryContext.descendantProductCounts().getOrDefault(category.getId(), 0),
-                buildCategoryBreadcrumbs(category),
+                buildCategoryBreadcrumbs(category, language),
                selectPrimaryMedia(images),
                images,
-                buildCategoryTree(category.getId(), categoryContext)
+                buildCategoryTree(category.getId(), categoryContext, language)
        );
    }

-    private List<ShopCategoryRefDto> buildCategoryBreadcrumbs(ShopCategory category) {
+    private List<ShopCategoryRefDto> buildCategoryBreadcrumbs(ShopCategory category, String language) {
        List<ShopCategoryRefDto> breadcrumbs = new ArrayList<>();
        ShopCategory current = category;
        while (current != null) {
-            breadcrumbs.add(new ShopCategoryRefDto(current.getId(), current.getSlug(), current.getName()));
+            breadcrumbs.add(new ShopCategoryRefDto(
+                    current.getId(),
+                    current.getSlug(),
+                    current.getNameForLanguage(language)
+            ));
            current = current.getParentCategory();
        }
        java.util.Collections.reverse(breadcrumbs);
@@ -399,11 +409,11 @@ public class PublicShopCatalogService {
                new ShopCategoryRefDto(
                        entry.product().getCategory().getId(),
                        entry.product().getCategory().getSlug(),
-                        entry.product().getCategory().getName()
+                        entry.product().getCategory().getNameForLanguage(language)
                ),
                resolvePriceFrom(entry.variants()),
                resolvePriceTo(entry.variants()),
-                toVariantDto(entry.defaultVariant(), entry.defaultVariant(), variantColorHexByMaterialAndColor),
+                toVariantDto(entry.defaultVariant(), entry.defaultVariant(), variantColorHexByMaterialAndColor, language),
                selectPrimaryMedia(images),
                toProductModelDto(entry)
        );
@@ -432,14 +442,14 @@ public class PublicShopCatalogService {
                new ShopCategoryRefDto(
                        entry.product().getCategory().getId(),
                        entry.product().getCategory().getSlug(),
-                        entry.product().getCategory().getName()
+                        entry.product().getCategory().getNameForLanguage(language)
                ),
-                buildCategoryBreadcrumbs(entry.product().getCategory()),
+                buildCategoryBreadcrumbs(entry.product().getCategory(), language),
                resolvePriceFrom(entry.variants()),
                resolvePriceTo(entry.variants()),
-                toVariantDto(entry.defaultVariant(), entry.defaultVariant(), variantColorHexByMaterialAndColor),
+                toVariantDto(entry.defaultVariant(), entry.defaultVariant(), variantColorHexByMaterialAndColor, language),
                entry.variants().stream()
-                        .map(variant -> toVariantDto(variant, entry.defaultVariant(), variantColorHexByMaterialAndColor))
+                        .map(variant -> toVariantDto(variant, entry.defaultVariant(), variantColorHexByMaterialAndColor, language))
                        .toList(),
                selectPrimaryMedia(images),
                images,
@@ -449,7 +459,8 @@ public class PublicShopCatalogService {

    private ShopProductVariantOptionDto toVariantDto(ShopProductVariant variant,
                                                     ShopProductVariant defaultVariant,
-                                                     Map<String, String> variantColorHexByMaterialAndColor) {
+                                                     Map<String, String> variantColorHexByMaterialAndColor,
+                                                     String language) {
        if (variant == null) {
            return null;
        }
@@ -463,6 +474,7 @@ public class PublicShopCatalogService {
                variant.getSku(),
                variant.getVariantLabel(),
                variant.getColorName(),
+                variant.getColorLabelForLanguage(language),
                colorHex,
                variant.getPriceChf(),
                defaultVariant != null && Objects.equals(defaultVariant.getId(), variant.getId())