feat(frontend e back-end): termini e condizioni

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

@@ -81,6 +81,21 @@
             </div>
           </div>
 
+          <div class="legal-consent">
+            <label>
+              <input type="checkbox" formControlName="acceptLegal">
+              <span>
+                {{ 'LEGAL.CONSENT.LABEL_PREFIX' | translate }}
+                <a href="/terms" target="_blank" rel="noopener">{{ 'LEGAL.CONSENT.TERMS_LINK' | translate }}</a>
+                {{ 'LEGAL.CONSENT.AND' | translate }}
+                <a href="/privacy" target="_blank" rel="noopener">{{ 'LEGAL.CONSENT.PRIVACY_LINK' | translate }}</a>.
+              </span>
+            </label>
+            <div class="consent-error" *ngIf="form.get('acceptLegal')?.invalid && form.get('acceptLegal')?.touched">
+              {{ 'LEGAL.CONSENT.REQUIRED_ERROR' | translate }}
+            </div>
+          </div>
+
           <div class="actions">
             <app-button 
               type="button" 

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

@@ -43,6 +43,34 @@
   margin-top: 1.5rem;
 }
 
+.legal-consent {
+  margin-top: 1rem;
+
+  label {
+    display: flex;
+    align-items: flex-start;
+    gap: 0.6rem;
+    font-size: 0.95rem;
+    color: var(--color-text-main);
+    line-height: 1.4;
+  }
+
+  input[type='checkbox'] {
+    margin-top: 0.2rem;
+  }
+
+  a {
+    color: var(--color-brand);
+    text-decoration: underline;
+  }
+}
+
+.consent-error {
+  margin-top: 0.4rem;
+  color: var(--color-error);
+  font-size: 0.85rem;
+}
+
 // Summary Styles
 .summary-content {
   display: flex;

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

@@ -30,7 +30,8 @@ export class UserDetailsComponent {
       phone: ['', Validators.required],
       address: ['', Validators.required],
       zip: ['', Validators.required],
-      city: ['', Validators.required]
+      city: ['', Validators.required],
+      acceptLegal: [false, Validators.requiredTrue]
     });
   }