Merge branch 'fix/zoom_block' of https://gitea.quo.ar/tbianchini/shopit-front into fix/zoom_block

src/app/core/layout/store-layout/store-header/store-header.component.html

@@ -152,9 +152,9 @@
     </div>
   </div>
 
-  @if (displayCategories()) {
-    <div class="store-layout__categories d-none d-md-block">
-      <div class="container-xl px-3 px-md-4">
+  <div class="store-layout__categories d-none d-md-block">
+    <div class="container-xl h-100 px-3 px-md-4 d-flex align-items-center">
+      @if (displayCategories()) {
         <div class="store-layout__category-menu">
           <button
             type="button"
@@ -175,7 +175,18 @@
             (categorySelect)="onCategorySelect($event)"
           />
         </div>
-      </div>
+      }
+
+      @if (checkoutRemainingTime(); as remainingTime) {
+        <div
+          class="store-layout__checkout-timer ms-auto d-none d-md-flex align-items-baseline gap-3"
+          role="timer"
+          aria-label="Tiempo restante de compra"
+        >
+          <span class="store-layout__checkout-timer-label">Tiempo restante de compra:</span>
+          <span class="store-layout__checkout-timer-value">{{ remainingTime }}</span>
+        </div>
+      }
     </div>
-  }
+  </div>
 </header>

src/app/core/layout/store-layout/store-header/store-header.component.scss

@@ -10,6 +10,26 @@
   border-bottom: 1px solid var(--border-color);
 }
 
+.store-layout__categories {
+  height: 3.5rem;
+}
+
+.store-layout__checkout-timer {
+  color: var(--tenant-primary);
+  font-weight: 700;
+  white-space: nowrap;
+}
+
+.store-layout__checkout-timer-label {
+  font-size: 13px;
+}
+
+.store-layout__checkout-timer-value {
+  font-size: 20px;
+  line-height: 1;
+  font-variant-numeric: tabular-nums;
+}
+
 .store-layout__brand-slot {
   min-width: 150px;
 }

src/app/core/layout/store-layout/store-header/store-header.component.ts

@@ -1,4 +1,13 @@
-import { Component, ElementRef, HostListener, inject, input, output, signal } from '@angular/core';
+import {
+  Component,
+  computed,
+  ElementRef,
+  HostListener,
+  inject,
+  input,
+  output,
+  signal,
+} from '@angular/core';
 import { Router, RouterLink } from '@angular/router';
 import { AuthUser } from '../../../services/auth/auth.interfaces';
 import { CartIconComponent } from '../../../../shared/components/cart-icon/cart-icon.component';
@@ -40,6 +49,7 @@ export class StoreHeaderComponent {
   readonly displaySeachBar = input(true);
   readonly displayCart = input(true);
   readonly cartDisabled = input(false);
+  readonly checkoutRemainingSeconds = input<number | null>(null);
   readonly cartClick = output<void>();
   readonly ticketsClick = output<void>();
   readonly loginClick = output<void>();
@@ -53,6 +63,18 @@ export class StoreHeaderComponent {
   protected readonly minSearchLength = 3;
   protected readonly showSearchError = signal(false);
   protected readonly searchControl = new FormControl('', { nonNullable: true });
+  protected readonly checkoutRemainingTime = computed(() => {
+    const remainingSeconds = this.checkoutRemainingSeconds();
+
+    if (remainingSeconds === null) {
+      return null;
+    }
+
+    const minutes = Math.floor(remainingSeconds / 60);
+    const seconds = remainingSeconds % 60;
+
+    return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
+  });
 
   protected onCartClick(): void {
     if (this.cartDisabled()) {

src/app/core/layout/store-layout/store-layout.component.html

@@ -13,6 +13,7 @@
     [displaySeachBar]="tenant()?.display_seach_bar ?? true"
     [displayCart]="displayCart()"
     [cartDisabled]="isCheckoutRoute()"
+    [checkoutRemainingSeconds]="checkoutRemainingSeconds()"
     (cartClick)="onCartClick()"
     (ticketsClick)="onTicketsClick()"
     (loginClick)="onLoginClick()"

src/app/core/layout/store-layout/store-layout.component.scss

@@ -1,5 +1,7 @@
 :host {
   display: flex;
+  width: 100%;
+  min-width: 0;
   min-height: 100dvh;
   background: #f5f5f5;
   color: #202020;
@@ -7,6 +9,8 @@
 
 .store-layout {
   position: relative;
+  width: 100%;
+  min-width: 0;
 }
 
 .store-layout__cart-overlay {

src/app/core/layout/store-layout/store-layout.component.spec.ts

@@ -24,6 +24,7 @@ import { AuthUser } from '../../services/auth/auth.interfaces';
 import { StoreLayoutComponent } from './store-layout.component';
 import { StoreHeaderComponent } from './store-header/store-header.component';
 import { CheckoutService } from '../../services/checkout.service';
+import { CheckoutCountdownService } from '../../services/checkout-countdown.service';
 import { TenantUrlSerializer } from '../../services/tenant-url.serializer';
 
 const tenant: Tenant = {
@@ -150,6 +151,7 @@ describe('StoreLayoutComponent', () => {
   let tenantState = signal<Tenant | null>(tenant);
   let cartState = signal<Cart | null>(null);
   let authUserState = signal<AuthUser | null>(null);
+  let checkoutRemainingSecondsState = signal<number | null>(null);
   let checkoutServiceStub: { startCheckout: ReturnType<typeof vi.fn> };
   let queryParamMapState: BehaviorSubject<ParamMap>;
 
@@ -157,6 +159,7 @@ describe('StoreLayoutComponent', () => {
     tenantState = signal<Tenant | null>(tenant);
     cartState = signal<Cart | null>(null);
     authUserState = signal<AuthUser | null>(null);
+    checkoutRemainingSecondsState = signal<number | null>(null);
     queryParamMapState = new BehaviorSubject(convertToParamMap({}));
     const isAuthenticatedState = signal(false);
     checkoutServiceStub = {
@@ -215,6 +218,12 @@ describe('StoreLayoutComponent', () => {
           provide: CheckoutService,
           useValue: checkoutServiceStub,
         },
+        {
+          provide: CheckoutCountdownService,
+          useValue: {
+            remainingSeconds: checkoutRemainingSecondsState.asReadonly(),
+          },
+        },
       ],
     }).compileComponents();
   });
@@ -271,6 +280,22 @@ describe('StoreLayoutComponent', () => {
     expect(element.querySelector('.store-layout__cart-overlay')).toBeNull();
   });
 
+  it('shows the synchronized countdown in the header whenever one is active', () => {
+    checkoutRemainingSecondsState.set(587);
+
+    const fixture = TestBed.createComponent(StoreLayoutComponent);
+    fixture.detectChanges();
+
+    const element = fixture.nativeElement as HTMLElement;
+
+    expect(element.querySelector('.store-layout__checkout-timer-label')?.textContent).toContain(
+      'Tiempo restante de compra:',
+    );
+    expect(element.querySelector('.store-layout__checkout-timer-value')?.textContent?.trim()).toBe(
+      '09:47',
+    );
+  });
+
   it('hides the configured header elements when the tenant disables them', () => {
     tenantState.set({
       ...tenant,

src/app/core/layout/store-layout/store-layout.component.ts

@@ -24,6 +24,7 @@ import {
 } from '../../services/checkout.service';
 import { ToastService } from '../../services/toast.service';
 import { Category } from '../../services/tenant.interface';
+import { CheckoutCountdownService } from '../../services/checkout-countdown.service';
 
 @Component({
   selector: 'app-store-layout',
@@ -42,6 +43,7 @@ export class StoreLayoutComponent implements OnInit {
   private readonly cartService = inject(CartService);
   private readonly authService = inject(AuthService);
   private readonly checkoutService = inject(CheckoutService);
+  private readonly checkoutCountdownService = inject(CheckoutCountdownService);
   private readonly toastService = inject(ToastService);
   private readonly router = inject(Router);
   private readonly route = inject(ActivatedRoute);
@@ -49,6 +51,7 @@ export class StoreLayoutComponent implements OnInit {
 
   protected readonly isCartOpen = signal(false);
   protected readonly isCheckoutRoute = signal(this.isCheckoutUrl(this.router.url));
+  protected readonly checkoutRemainingSeconds = this.checkoutCountdownService.remainingSeconds;
   protected readonly isCreatingPurchase = signal(false);
   protected readonly displayCart = computed(() => this.tenant()?.display_cart ?? true);
   protected readonly cartEditingPolicy = computed(() => this.tenant()?.cart_editing_policy ?? null);
@@ -287,7 +290,7 @@ export class StoreLayoutComponent implements OnInit {
       this.toastService.danger(message);
 
       if (error instanceof HttpErrorResponse && isExpiredStockReservationResponse(error.error)) {
-        this.cartService.loadCart().subscribe({
+        this.cartService.loadCart(true).subscribe({
           error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
         });
       }

src/app/core/services/cart/cart.service.spec.ts

@@ -83,6 +83,20 @@ describe('CartService', () => {
     req.flush({ data: mockCart });
   });
 
+  it('refreshes catalog availability only after the expired cart has been reloaded', () => {
+    const availabilityChanged = vi.fn();
+    catalogAvailabilityService.availabilityChanged$.subscribe(availabilityChanged);
+
+    service.loadCart(true).subscribe();
+
+    expect(availabilityChanged).not.toHaveBeenCalled();
+    const req = httpMock.expectOne('http://api.test/tenants/acme/cart');
+    req.flush({ data: mockCart });
+
+    expect(service.cart()).toEqual(mockCart);
+    expect(availabilityChanged).toHaveBeenCalledOnce();
+  });
+
   it('propagates a custom loading mode to the request context', () => {
     service.withCustomLoading().loadCart().subscribe();
 

src/app/core/services/cart/cart.service.ts

@@ -34,14 +34,19 @@ export class CartService extends BaseApiService {
     });
   }
 
-  loadCart(): Observable<Cart> {
+  loadCart(refreshCatalogAvailability = false): Observable<Cart> {
     return this.http
       .get<ApiResponse<Cart>>(`${this.tenantApiUrl}/cart`, {
         withCredentials: true,
       })
       .pipe(
         map((response) => response.data),
-        tap((cart) => this.cartState.set(cart)),
+        tap((cart) => {
+          this.cartState.set(cart);
+          if (refreshCatalogAvailability) {
+            this.catalogAvailabilityService.notifyAvailabilityChanged();
+          }
+        }),
       );
   }
 

src/app/core/services/catalog/catalog.service.ts

@@ -14,7 +14,6 @@ import {
   CatalogItemDetail,
   CatalogVariantOptionsResponse,
   CategoryItemsResponse,
-  Product,
 } from './catalog.interface';
 
 type HttpParamValue = string | number | boolean | readonly (string | number | boolean)[];
@@ -33,12 +32,6 @@ export class CatalogService extends BaseApiService {
     return this.tenantService.getTenantApiUrl();
   }
 
-  getProductos(params?: ApiPaginationQueryParams): Observable<ApiPaginatedResponse<Product[]>> {
-    return this.http.get<ApiPaginatedResponse<Product[]>>(`${this.tenantApiUrl}/productos`, {
-      params: this.buildHttpParams(params),
-    });
-  }
-
   getCatalog(): Observable<CatalogFeaturedGroup[]> {
     return this.http.get<CatalogFeaturedGroup[]>(`${this.tenantApiUrl}/catalog`);
   }

src/app/core/services/checkout-countdown.service.spec.ts

@@ -0,0 +1,69 @@
+import { TestBed } from '@angular/core/testing';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { CheckoutCountdownService } from './checkout-countdown.service';
+
+describe('CheckoutCountdownService', () => {
+  let service: CheckoutCountdownService;
+
+  beforeEach(() => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date('2026-08-27T12:00:00.000Z'));
+    TestBed.configureTestingModule({ providers: [CheckoutCountdownService] });
+    service = TestBed.inject(CheckoutCountdownService);
+  });
+
+  afterEach(() => {
+    service.clear();
+    vi.useRealTimers();
+  });
+
+  it('counts down from the checkout server timing without depending on the client clock', () => {
+    service.synchronize({
+      expires_at: '2026-08-27T15:10:00.000Z',
+      expires_in_seconds: 600,
+      server_time: '2026-08-27T15:00:00.000Z',
+    });
+
+    expect(service.remainingSeconds()).toBe(600);
+
+    vi.advanceTimersByTime(1_000);
+
+    expect(service.remainingSeconds()).toBe(599);
+  });
+
+  it('recalculates against the deadline after a delayed browser interval', () => {
+    service.synchronize({
+      expires_at: null,
+      expires_in_seconds: 10,
+      server_time: '2026-08-27T15:00:00.000Z',
+    });
+
+    vi.setSystemTime(new Date('2026-08-27T12:00:07.000Z'));
+    vi.advanceTimersByTime(1_000);
+
+    expect(service.remainingSeconds()).toBe(2);
+  });
+
+  it('clears the countdown when checkout has no expiration', () => {
+    service.synchronize({
+      expires_at: null,
+      expires_in_seconds: null,
+      server_time: '2026-08-27T15:00:00.000Z',
+    });
+
+    expect(service.remainingSeconds()).toBeNull();
+  });
+
+  it('keeps the active countdown when a partial checkout response omits timing fields', () => {
+    service.synchronize({
+      expires_at: null,
+      expires_in_seconds: 10,
+      server_time: '2026-08-27T15:00:00.000Z',
+    });
+
+    service.synchronize({});
+
+    expect(service.remainingSeconds()).toBe(10);
+  });
+});

src/app/core/services/checkout-countdown.service.ts

@@ -0,0 +1,97 @@
+import { Injectable, OnDestroy, signal } from '@angular/core';
+
+export interface CheckoutTiming {
+  expires_at: string | null;
+  expires_in_seconds: number | null;
+  server_time: string;
+}
+
+@Injectable({
+  providedIn: 'root',
+})
+export class CheckoutCountdownService implements OnDestroy {
+  private readonly remainingSecondsState = signal<number | null>(null);
+  private deadlineMs: number | null = null;
+  private intervalId: ReturnType<typeof setInterval> | null = null;
+
+  readonly remainingSeconds = this.remainingSecondsState.asReadonly();
+
+  synchronize(timing: Partial<CheckoutTiming>): void {
+    const remainingSeconds = this.resolveRemainingSeconds(timing);
+
+    if (remainingSeconds === undefined) {
+      return;
+    }
+
+    if (remainingSeconds === null) {
+      this.clear();
+      return;
+    }
+
+    this.stopInterval();
+    this.deadlineMs = Date.now() + remainingSeconds * 1_000;
+    this.updateRemainingSeconds();
+
+    if (remainingSeconds > 0) {
+      this.intervalId = setInterval(() => this.updateRemainingSeconds(), 1_000);
+    }
+  }
+
+  clear(): void {
+    this.stopInterval();
+    this.deadlineMs = null;
+    this.remainingSecondsState.set(null);
+  }
+
+  ngOnDestroy(): void {
+    this.clear();
+  }
+
+  private resolveRemainingSeconds(timing: Partial<CheckoutTiming>): number | null | undefined {
+    if (timing.expires_at === null && timing.expires_in_seconds === null) {
+      return null;
+    }
+
+    const expiresAt =
+      typeof timing.expires_at === 'string' ? Date.parse(timing.expires_at) : Number.NaN;
+    const serverTime =
+      typeof timing.server_time === 'string' ? Date.parse(timing.server_time) : Number.NaN;
+
+    if (Number.isFinite(expiresAt) && Number.isFinite(serverTime)) {
+      return Math.max(0, Math.ceil((expiresAt - serverTime) / 1_000));
+    }
+
+    if (
+      typeof timing.expires_in_seconds === 'number' &&
+      Number.isFinite(timing.expires_in_seconds)
+    ) {
+      return Math.max(0, Math.ceil(timing.expires_in_seconds));
+    }
+
+    if (Number.isFinite(expiresAt)) {
+      return Math.max(0, Math.ceil((expiresAt - Date.now()) / 1_000));
+    }
+
+    return undefined;
+  }
+
+  private updateRemainingSeconds(): void {
+    if (this.deadlineMs === null) {
+      return;
+    }
+
+    const remainingSeconds = Math.max(0, Math.ceil((this.deadlineMs - Date.now()) / 1_000));
+    this.remainingSecondsState.set(remainingSeconds);
+
+    if (remainingSeconds === 0) {
+      this.stopInterval();
+    }
+  }
+
+  private stopInterval(): void {
+    if (this.intervalId !== null) {
+      clearInterval(this.intervalId);
+      this.intervalId = null;
+    }
+  }
+}

src/app/core/services/checkout.service.spec.ts

@@ -1,9 +1,10 @@
 import { provideHttpClient } from '@angular/common/http';
 import { HttpTestingController, provideHttpClientTesting } from '@angular/common/http/testing';
 import { TestBed } from '@angular/core/testing';
-import { afterEach, beforeEach, describe, expect, it } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { environment } from '../../../environments/environment';
+import { CatalogAvailabilityService } from './catalog/catalog-availability.service';
 import { CheckoutService } from './checkout.service';
 
 describe('CheckoutService', () => {
@@ -38,4 +39,59 @@ describe('CheckoutService', () => {
 
     await expect(purchasePromise).resolves.toMatchObject({ id: 55 });
   });
+
+  it('refreshes catalog availability when starting checkout fails', async () => {
+    const catalogAvailabilityService = TestBed.inject(CatalogAvailabilityService);
+    const notifyAvailabilityChanged = vi.spyOn(
+      catalogAvailabilityService,
+      'notifyAvailabilityChanged',
+    );
+    const purchasePromise = service.startCheckout('desfile', { cart_id: 12 });
+    const request = httpMock.expectOne(`${environment.url}tenants/desfile/compras/start-checkout`);
+
+    request.flush(
+      { message: 'No hay stock disponible.' },
+      { status: 422, statusText: 'Unprocessable Entity' },
+    );
+
+    await expect(purchasePromise).rejects.toBeTruthy();
+    expect(notifyAvailabilityChanged).toHaveBeenCalledOnce();
+  });
+
+  it('waits for the expired cart refresh before refreshing catalog availability', async () => {
+    const catalogAvailabilityService = TestBed.inject(CatalogAvailabilityService);
+    const notifyAvailabilityChanged = vi.spyOn(
+      catalogAvailabilityService,
+      'notifyAvailabilityChanged',
+    );
+    const purchasePromise = service.startCheckout('desfile', { cart_id: 12 });
+    const request = httpMock.expectOne(`${environment.url}tenants/desfile/compras/start-checkout`);
+
+    request.flush(
+      {
+        code: 'stock_reservation.expired',
+        message: 'La reserva de stock venció.',
+      },
+      { status: 422, statusText: 'Unprocessable Entity' },
+    );
+
+    await expect(purchasePromise).rejects.toBeTruthy();
+    expect(notifyAvailabilityChanged).not.toHaveBeenCalled();
+  });
+
+  it('preserves checkout timing fields when completing a purchase', async () => {
+    const purchasePromise = service.completePurchase('desfile', 55);
+    const request = httpMock.expectOne(`${environment.url}tenants/desfile/compras/55/complete`);
+    const response = {
+      status: 'pending_payment',
+      expires_at: '2026-08-26T20:00:00.000Z',
+      expires_in_seconds: 900,
+      server_time: '2026-08-26T19:45:00.000Z',
+    };
+
+    expect(request.request.method).toBe('POST');
+    request.flush({ data: response });
+
+    await expect(purchasePromise).resolves.toEqual(response);
+  });
 });

src/app/core/services/checkout.service.ts

@@ -1,10 +1,11 @@
-import { Injectable } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
 import { firstValueFrom } from 'rxjs';
 
 import { environment } from '../../../environments/environment';
 import { ApiPaginatedResponse } from './api-paginated-response.interface';
 import { ApiPaginationQueryParams } from './api-pagination-query-params.interface';
 import { BaseApiService } from './base-api.service';
+import { CatalogAvailabilityService } from './catalog/catalog-availability.service';
 
 export interface UpdatePurchaseCustomerPayload {
   dni: string;
@@ -70,6 +71,32 @@ export type StartCheckoutPayload =
 
 export interface PurchaseStatusResponse {
   status: string | null;
+  expires_at: string | null;
+  expires_in_seconds: number | null;
+  server_time: string;
+  payment_verification?: PurchasePaymentVerificationResponse;
+}
+
+export type PurchasePaymentCandidateReason =
+  | 'ambiguous_exact_match'
+  | 'exact_dni_near_amount'
+  | 'exact_amount_near_dni';
+
+export interface PurchasePaymentCandidatePrimaryResponse {
+  reason: PurchasePaymentCandidateReason;
+  dni_distance: number | null;
+  payment_amount: string;
+  purchase_amount: string;
+  amount_difference: string;
+  confidence: 'exact' | 'high' | 'medium';
+  detected_at: string | null;
+}
+
+export interface PurchasePaymentVerificationResponse {
+  status: 'pending' | 'candidate';
+  candidate_count: number;
+  primary: PurchasePaymentCandidatePrimaryResponse | null;
+  reasons: PurchasePaymentCandidateReason[];
 }
 
 export interface PurchaseSummaryResponse extends PurchaseStatusResponse {
@@ -106,7 +133,6 @@ export interface PurchaseDetailResponse extends PurchaseStatusResponse {
   user_id: number;
   created_at: string | null;
   payment_method: string | null;
-  expires_at: string | null;
   dni: string | null;
   transfer_payer_dni: string | null;
   telefono: string | null;
@@ -124,24 +150,34 @@ export interface PurchaseDetailResponse extends PurchaseStatusResponse {
   providedIn: 'root',
 })
 export class CheckoutService extends BaseApiService {
+  private readonly catalogAvailabilityService = inject(CatalogAvailabilityService);
+
   async startCheckout(
     tenantCode: string,
     payload: StartCheckoutPayload,
   ): Promise<PurchaseDetailResponse> {
-    const response = await firstValueFrom(
-      this.http.post<{ data?: PurchaseDetailResponse } | PurchaseDetailResponse>(
-        `${environment.url}tenants/${tenantCode}/compras/start-checkout`,
-        payload,
-      ),
-    );
+    try {
+      const response = await firstValueFrom(
+        this.http.post<{ data?: PurchaseDetailResponse } | PurchaseDetailResponse>(
+          `${environment.url}tenants/${tenantCode}/compras/start-checkout`,
+          payload,
+        ),
+      );
 
-    const purchase = this.extractResponseData<PurchaseDetailResponse>(response);
+      const purchase = this.extractResponseData<PurchaseDetailResponse>(response);
 
-    if (!purchase?.id) {
-      throw new Error('Error al crear la compra.');
+      if (!purchase?.id) {
+        throw new Error('Error al crear la compra.');
+      }
+
+      return purchase;
+    } catch (error) {
+      const responseBody = (error as { error?: unknown } | null)?.error;
+      if (!isExpiredStockReservationResponse(responseBody)) {
+        this.catalogAvailabilityService.notifyAvailabilityChanged();
+      }
+      throw error;
     }
-
-    return purchase;
   }
 
   async generatePaymentIntent(
@@ -186,25 +222,6 @@ export class CheckoutService extends BaseApiService {
     return purchase;
   }
 
-  async completePurchase(tenantCode: string, purchaseId: number): Promise<PurchaseStatusResponse> {
-    const response = await firstValueFrom(
-      this.http.post<{ data?: PurchaseStatusResponse } | PurchaseStatusResponse>(
-        `${environment.url}tenants/${tenantCode}/compras/${purchaseId}/complete`,
-        {},
-      ),
-    );
-
-    const purchase = this.extractResponseData<PurchaseStatusResponse>(response);
-
-    if (!purchase) {
-      throw new Error('Error al finalizar la compra.');
-    }
-
-    return {
-      status: purchase.status ?? null,
-    };
-  }
-
   async submitPurchaseForReview(
     tenantCode: string,
     purchaseId: number,
@@ -221,7 +238,7 @@ export class CheckoutService extends BaseApiService {
       throw new Error('Error al enviar la compra a revisi\u00f3n.');
     }
 
-    return { status: purchase.status ?? null };
+    return purchase;
   }
 
   async cancelPurchase(tenantCode: string, purchaseId: number): Promise<PurchaseStatusResponse> {
@@ -237,7 +254,7 @@ export class CheckoutService extends BaseApiService {
       throw new Error('Error al cancelar la compra.');
     }
 
-    return { status: purchase.status ?? null };
+    return purchase;
   }
 
   async getPurchases(

src/app/core/services/modal.service.spec.ts

@@ -7,6 +7,7 @@ import { firstValueFrom } from 'rxjs';
 
 import { ConfirmDeleteModalComponent } from '../../shared/components/confirm-delete-modal/confirm-delete-modal.component';
 import { ConfirmModalComponent } from '../../shared/components/confirm-modal/confirm-modal.component';
+import { ImageModalComponent } from '../../shared/components/image-modal/image-modal.component';
 import { QrModalComponent } from '../../shared/components/qr-modal/qr-modal.component';
 import { SimpleModalComponent } from '../../shared/components/simple-modal/simple-modal.component';
 import { MODAL_DATA, ModalRef, ModalService } from './modal.service';
@@ -258,6 +259,36 @@ describe('ModalService', () => {
       showCloseButton: true,
     });
   });
+
+  it('opens the image viewer fullscreen with normalized zoom limits', () => {
+    service.openImage({
+      title: 'Producto',
+      src: '/images/producto.webp',
+      alt: 'Producto visto de frente',
+      initialZoom: 8,
+      minZoom: 0,
+      maxZoom: 3,
+    });
+
+    const activeModal = service.activeModal();
+
+    expect(activeModal?.component).toBe(ImageModalComponent);
+    expect(activeModal?.config).toEqual({
+      title: 'Producto',
+      size: 'full',
+      presentation: 'fullscreen-media',
+      data: {
+        src: '/images/producto.webp',
+        alt: 'Producto visto de frente',
+        initialZoom: 3,
+        minZoom: 0.1,
+        maxZoom: 3,
+      },
+      closeOnBackdrop: true,
+      closeOnEscape: true,
+      showCloseButton: true,
+    });
+  });
 });
 
 @Component({

src/app/core/services/modal.service.ts

@@ -2,16 +2,19 @@ import { InjectionToken, Injectable, Type, signal } from '@angular/core';
 import { Observable, Subject, map } from 'rxjs';
 import { ConfirmDeleteModalComponent } from '../../shared/components/confirm-delete-modal/confirm-delete-modal.component';
 import { ConfirmModalComponent } from '../../shared/components/confirm-modal/confirm-modal.component';
+import { ImageModalComponent } from '../../shared/components/image-modal/image-modal.component';
 import { QrModalComponent } from '../../shared/components/qr-modal/qr-modal.component';
 import { SimpleModalComponent } from '../../shared/components/simple-modal/simple-modal.component';
 
 export type ModalSize = 'qr' | 'sm' | 'md' | 'lg' | 'xl' | 'full';
-export type ModalDismissReason = 'backdrop' | 'escape' | 'programmatic' | 'replaced';
+export type ModalDismissReason = 'backdrop' | 'escape' | 'programmatic' | 'replaced' | 'swipe';
+export type ModalPresentation = 'dialog' | 'fullscreen-media';
 
 export interface ModalConfig<TData = unknown> {
   title?: string;
   data?: TData;
   size?: ModalSize;
+  presentation?: ModalPresentation;
   closeOnBackdrop?: boolean;
   closeOnEscape?: boolean;
   showCloseButton?: boolean;
@@ -62,6 +65,25 @@ export interface QrModalConfig extends Omit<ModalConfig<QrModalData>, 'data' | '
   ticket: string;
 }
 
+export interface ImageModalData {
+  src: string;
+  alt: string;
+  initialZoom: number;
+  minZoom: number;
+  maxZoom: number;
+}
+
+export interface ImageModalConfig extends Omit<
+  ModalConfig<ImageModalData>,
+  'data' | 'presentation' | 'size'
+> {
+  src: string;
+  alt: string;
+  initialZoom?: number;
+  minZoom?: number;
+  maxZoom?: number;
+}
+
 export interface ActiveModalState<TResult = unknown, TData = unknown> {
   component: Type<unknown>;
   config: NormalizedModalConfig<TData>;
@@ -195,6 +217,33 @@ export class ModalService {
     });
   }
 
+  openImage(config: ImageModalConfig): Observable<void> {
+    return this.openImageRef(config).afterClosed$.pipe(map(() => undefined));
+  }
+
+  openImageRef(config: ImageModalConfig): ModalRef<void> {
+    const { src, alt, initialZoom = 1, minZoom = 1, maxZoom = 4, ...modalConfig } = config;
+    const normalizedMinZoom = Math.max(0.1, minZoom);
+    const normalizedMaxZoom = Math.max(normalizedMinZoom, maxZoom);
+    const normalizedInitialZoom = Math.min(
+      normalizedMaxZoom,
+      Math.max(normalizedMinZoom, initialZoom),
+    );
+
+    return this.open(ImageModalComponent, {
+      ...modalConfig,
+      size: 'full',
+      presentation: 'fullscreen-media',
+      data: {
+        src,
+        alt,
+        initialZoom: normalizedInitialZoom,
+        minZoom: normalizedMinZoom,
+        maxZoom: normalizedMaxZoom,
+      },
+    });
+  }
+
   private close<TResult>(ref: ModalRef<TResult>, result?: TResult): void {
     if (this.activeModalState()?.ref !== ref) {
       return;

src/app/features/componentes-test/pages/reutilizables-test-page/reutilizables-test-page.component.html

@@ -83,6 +83,9 @@
               Abrir modal ancho
             </app-button>
             <app-button (click)="openSimpleModal()"> Abrir simple modal </app-button>
+            <app-button variant="secondary" (click)="openImageModal()">
+              Abrir visor de imagen
+            </app-button>
           </div>
           <div class="modal-showcase__result" data-testid="modal-last-result">
             {{ lastModalResult }}

src/app/features/componentes-test/pages/reutilizables-test-page/reutilizables-test-page.component.spec.ts

@@ -51,6 +51,7 @@ function createModalServiceStub() {
     open: vi.fn(),
     openConfirm: vi.fn().mockReturnValue(of(true)),
     openConfirmDelete: vi.fn().mockReturnValue(of(false)),
+    openImage: vi.fn().mockReturnValue(of(undefined)),
   };
 }
 
@@ -281,6 +282,9 @@ describe('ReutilizablesTestPageComponent', () => {
     const deleteButton = buttons.find((button) =>
       button.textContent?.includes('Abrir confirm delete'),
     ) as HTMLButtonElement;
+    const imageButton = buttons.find((button) =>
+      button.textContent?.includes('Abrir visor de imagen'),
+    ) as HTMLButtonElement;
 
     expect(element.querySelector('[data-testid="modal-last-result"]')?.textContent).toContain(
       'Todavia no se abrio ningun modal.',
@@ -290,6 +294,8 @@ describe('ReutilizablesTestPageComponent', () => {
     fixture.detectChanges();
     deleteButton.click();
     fixture.detectChanges();
+    imageButton.click();
+    fixture.detectChanges();
 
     expect(modalServiceStub.openConfirm).toHaveBeenCalledWith({
       title: 'Confirmar accion',
@@ -302,6 +308,11 @@ describe('ReutilizablesTestPageComponent', () => {
         'Esta accion eliminara el producto del catalogo. Podras volver a crearlo manualmente.',
       confirmLabel: 'Eliminar',
     });
+    expect(modalServiceStub.openImage).toHaveBeenCalledWith({
+      title: 'Mochila urbana roja',
+      src: '/images/carousel-mochila-roja.webp',
+      alt: 'Mochila urbana roja vista de frente',
+    });
     expect(element.querySelector('[data-testid="modal-last-result"]')?.textContent).toContain(
       'Resultado: false',
     );

src/app/features/componentes-test/pages/reutilizables-test-page/reutilizables-test-page.component.ts

@@ -493,6 +493,14 @@ export class ReutilizablesTestPageComponent {
       });
   }
 
+  protected openImageModal(): void {
+    this.modalService.openImage({
+      title: 'Mochila urbana roja',
+      src: '/images/carousel-mochila-roja.webp',
+      alt: 'Mochila urbana roja vista de frente',
+    });
+  }
+
   private openConfirmModal(config: Parameters<ModalService['openConfirm']>[0]): void {
     this.modalService.openConfirm(config).subscribe((confirmed) => {
       this.lastModalResult = `Resultado: ${confirmed}`;

src/app/features/store/pages/category-items-page/category-items-page.component.ts

@@ -180,7 +180,7 @@ export class CategoryItemsPageComponent {
       this.toastService.danger(message);
 
       if (error instanceof HttpErrorResponse && isExpiredStockReservationResponse(error.error)) {
-        this.cartService.loadCart().subscribe({
+        this.cartService.loadCart(true).subscribe({
           error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
         });
       }

src/app/features/store/pages/checkout-page/checkout-page.component.html

@@ -34,6 +34,7 @@
             [qrPaymentAmount]="cartTotal()"
             [whatsappUrl]="whatsappUrl()"
             [transferValidationStatus]="transferValidationStatus()"
+            [transferVerificationErrorTitle]="transferVerificationErrorTitle()"
             (paymentMethodChange)="selectPaymentMethod($event)"
             (copyTransferValue)="copyTransferValue($event.field, $event.value)"
             (cancelStep)="onCancel()"
@@ -46,6 +47,17 @@
     </div>
 
     <div class="checkout-page__cart-col">
+      @if (checkoutRemainingTime(); as remainingTime) {
+        <div
+          class="checkout-page__mobile-countdown d-flex d-md-none align-items-baseline justify-content-center gap-3"
+          role="timer"
+          aria-label="Tiempo restante de compra"
+        >
+          <span class="checkout-page__mobile-countdown-label">Tiempo restante de compra:</span>
+          <span class="checkout-page__mobile-countdown-value">{{ remainingTime }}</span>
+        </div>
+      }
+
       <app-cart
         title="COMPRA"
         [items]="mappedCartItems()"

src/app/features/store/pages/checkout-page/checkout-page.component.scss

@@ -28,6 +28,24 @@
     display: flex;
     flex-direction: column;
   }
+
+  &__mobile-countdown {
+    flex: 0 0 auto;
+    margin-bottom: 1.5rem;
+    color: var(--tenant-primary);
+    font-weight: 700;
+    white-space: nowrap;
+  }
+
+  &__mobile-countdown-label {
+    font-size: 13px;
+  }
+
+  &__mobile-countdown-value {
+    font-size: 20px;
+    line-height: 1;
+    font-variant-numeric: tabular-nums;
+  }
 }
 
 .checkout-page__loading {

src/app/features/store/pages/checkout-page/checkout-page.component.spec.ts

@@ -14,6 +14,7 @@ import { TenantService } from '../../../../core/services/tenant.service';
 import { ToastService } from '../../../../core/services/toast.service';
 import { CartService } from '../../../../core/services/cart/cart.service';
 import { CartEditingPolicy } from '../../../../core/services/tenant.interface';
+import { CheckoutCountdownService } from '../../../../core/services/checkout-countdown.service';
 import { CheckoutPageComponent } from './checkout-page.component';
 
 describe('CheckoutPageComponent payment validation', () => {
@@ -129,6 +130,93 @@ describe('CheckoutPageComponent payment validation', () => {
     return { fixture, component: fixture.componentInstance as any };
   }
 
+  it('does not expose an active countdown until the purchase timing is loaded', async () => {
+    const countdown = TestBed.inject(CheckoutCountdownService);
+    countdown.synchronize({
+      expires_at: null,
+      expires_in_seconds: 600,
+      server_time: new Date().toISOString(),
+    });
+    checkoutServiceStub.getPurchase.mockResolvedValue({
+      id: 25,
+      status: 'created',
+      expires_at: '2026-08-27T15:10:00.000Z',
+      expires_in_seconds: 600,
+      server_time: '2026-08-27T15:00:00.000Z',
+      items: [],
+      subtotal: '0.00',
+      total: '0.00',
+    });
+    routeParamMap = convertToParamMap({ id: 25 });
+
+    const { component } = createComponent();
+
+    expect(component.checkoutRemainingTime()).toBeNull();
+
+    await Promise.resolve();
+
+    expect(countdown.remainingSeconds()).toBe(600);
+    expect(component.checkoutRemainingTime()).toBe('10:00');
+  });
+
+  it('checks the purchase when the countdown expires and redirects to the expired status', async () => {
+    const countdown = TestBed.inject(CheckoutCountdownService);
+    checkoutServiceStub.getPurchase.mockResolvedValue({ status: 'expired' });
+    const { fixture, component } = createComponent();
+    component.createdPurchase.set({
+      id: 25,
+      status: 'created',
+      expires_at: new Date(Date.now() + 1_000).toISOString(),
+      expires_in_seconds: 1,
+      server_time: new Date().toISOString(),
+      items: [],
+      subtotal: '0.00',
+      total: '0.00',
+    });
+    countdown.synchronize(component.createdPurchase());
+    fixture.detectChanges();
+
+    await vi.advanceTimersByTimeAsync(1_000);
+    fixture.detectChanges();
+    await Promise.resolve();
+
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledOnce();
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledWith('tenant-test', 25);
+    expect(routerStub.navigate).toHaveBeenCalledWith(['/checkout/status', 25], {
+      queryParams: { status: 'expired' },
+    });
+  });
+
+  it('checks the purchase only once when the expired countdown remains at zero', async () => {
+    const countdown = TestBed.inject(CheckoutCountdownService);
+    checkoutServiceStub.getPurchase.mockResolvedValue({
+      status: 'pending_payment',
+      expires_at: new Date(Date.now() - 1_000).toISOString(),
+      expires_in_seconds: 0,
+      server_time: new Date().toISOString(),
+    });
+    const { fixture, component } = createComponent();
+    component.createdPurchase.set({
+      id: 25,
+      status: 'pending_payment',
+      expires_at: new Date(Date.now() - 1_000).toISOString(),
+      expires_in_seconds: 0,
+      server_time: new Date().toISOString(),
+      items: [],
+      subtotal: '0.00',
+      total: '0.00',
+    });
+    countdown.synchronize(component.createdPurchase());
+    fixture.detectChanges();
+
+    await Promise.resolve();
+    fixture.detectChanges();
+    await vi.advanceTimersByTimeAsync(5_000);
+
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledOnce();
+    expect(routerStub.navigate).not.toHaveBeenCalled();
+  });
+
   it('polls QR after five seconds and navigates only when payment is paid', async () => {
     checkoutServiceStub.getPurchase
       .mockResolvedValueOnce({ status: 'pending_payment' })
@@ -195,7 +283,7 @@ describe('CheckoutPageComponent payment validation', () => {
     expect(checkoutServiceStub.getPurchase).not.toHaveBeenCalled();
   });
 
-  it('polls a transfer every three seconds up to four attempts', async () => {
+  it('polls a transfer every three seconds for one minute', async () => {
     checkoutServiceStub.getPurchase.mockResolvedValue({ status: 'pending_payment' });
     const { component } = createComponent();
     component.selectedPaymentMethod.set('transfer');
@@ -205,14 +293,12 @@ describe('CheckoutPageComponent payment validation', () => {
     expect(checkoutServiceStub.submitPurchaseForReview).toHaveBeenCalledWith('tenant-test', 25);
     expect(checkoutServiceStub.getPurchase).not.toHaveBeenCalled();
 
-    for (let attempt = 1; attempt <= 3; attempt += 1) {
-      await vi.advanceTimersByTimeAsync(3_000);
-      expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(attempt);
-      expect(component.transferValidationStatus()).toBe('checking');
-    }
+    await vi.advanceTimersByTimeAsync(57_000);
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(19);
+    expect(component.transferValidationStatus()).toBe('checking');
 
     await vi.advanceTimersByTimeAsync(3_000);
-    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(4);
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(20);
     expect(checkoutServiceStub.getPurchase).toHaveBeenLastCalledWith('tenant-test', 25);
     expect(component.transferValidationStatus()).toBe('error');
     expect(routerStub.navigate).not.toHaveBeenCalled();
@@ -256,13 +342,43 @@ describe('CheckoutPageComponent payment validation', () => {
     component.selectedPaymentMethod.set('transfer');
 
     await component.onComplete();
-    await vi.advanceTimersByTimeAsync(12_000);
+    await vi.advanceTimersByTimeAsync(60_000);
 
-    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(4);
+    expect(checkoutServiceStub.getPurchase).toHaveBeenCalledTimes(20);
     expect(component.transferValidationStatus()).toBe('error');
     expect(routerStub.navigate).not.toHaveBeenCalled();
   });
 
+  it('uses the primary candidate reason when transfer polling times out', async () => {
+    checkoutServiceStub.getPurchase.mockResolvedValue({
+      status: 'in_review',
+      payment_verification: {
+        status: 'candidate',
+        candidate_count: 1,
+        primary: {
+          reason: 'exact_amount_near_dni',
+          dni_distance: 1,
+          payment_amount: '300000.00',
+          purchase_amount: '300000.00',
+          amount_difference: '0.00',
+          confidence: 'medium',
+          detected_at: '2026-08-27T18:00:00-03:00',
+        },
+        reasons: ['exact_amount_near_dni'],
+      },
+    });
+    const { component } = createComponent();
+    component.selectedPaymentMethod.set('transfer');
+
+    await component.onComplete();
+    await vi.advanceTimersByTimeAsync(60_000);
+
+    expect(component.transferValidationStatus()).toBe('error');
+    expect(component.transferVerificationErrorTitle()).toBe(
+      'El DNI no corresponde con el de la transferencia',
+    );
+  });
+
   it('does not poll when submitting a transfer for review fails', async () => {
     vi.spyOn(console, 'error').mockImplementation(() => undefined);
     checkoutServiceStub.submitPurchaseForReview.mockRejectedValue(new Error('network error'));

src/app/features/store/pages/checkout-page/checkout-page.component.ts

@@ -2,6 +2,7 @@ import {
   ChangeDetectionStrategy,
   Component,
   computed,
+  effect,
   inject,
   OnDestroy,
   OnInit,
@@ -16,8 +17,10 @@ import { firstValueFrom, startWith } from 'rxjs';
 import { TenantService } from '../../../../core/services/tenant.service';
 import {
   CheckoutService,
+  PurchasePaymentCandidateReason,
   PurchaseDetailItemResponse,
   PurchaseDetailResponse,
+  PurchaseStatusResponse,
 } from '../../../../core/services/checkout.service';
 import { AuthService } from '../../../../core/services/auth/auth.service';
 import { GlobalLoadingService } from '../../../../core/services/global-loading/global-loading.service';
@@ -28,6 +31,7 @@ import { StepComponent } from '../../../../shared/components/stepper/step.compon
 import { StepperComponent } from '../../../../shared/components/stepper/stepper.component';
 import { CheckoutDataStepComponent } from './checkout-data-step.component';
 import { CheckoutPaymentStepComponent } from './checkout-payment-step.component';
+import { CheckoutCountdownService } from '../../../../core/services/checkout-countdown.service';
 import {
   CheckoutForm,
   PaymentMethod,
@@ -64,6 +68,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   private readonly router = inject(Router);
   private readonly tenantService = inject(TenantService);
   private readonly checkoutService = inject(CheckoutService);
+  private readonly checkoutCountdownService = inject(CheckoutCountdownService);
   private readonly authService = inject(AuthService);
   private readonly globalLoadingService = inject(GlobalLoadingService);
   private readonly toastService = inject(ToastService);
@@ -71,7 +76,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   private readonly qrPollingIntervalMs = 5_000;
   private readonly qrPollingMaxAttempts = 120;
   private readonly transferPollingIntervalMs = 3_000;
-  private readonly transferPollingMaxAttempts = 209;
+  private readonly transferPollingMaxAttempts = 20;
 
   private qrPollingTimeoutId: ReturnType<typeof setTimeout> | null = null;
   private qrPollingAttempts = 0;
@@ -82,6 +87,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   private paymentMethodRequestId = 0;
   private navigationStarted = false;
   private cancelPurchasePromise: Promise<boolean> | null = null;
+  private expirationCheckPurchaseId: number | null = null;
 
   @ViewChild(StepperComponent) stepper!: StepperComponent;
 
@@ -95,6 +101,27 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   protected readonly createdPurchase = signal<PurchaseDetailResponse | null>(null);
   protected readonly isLoadingPurchase = signal(true);
   protected readonly checkoutStepIndex = signal(0);
+  protected readonly checkoutRemainingTime = computed(() => {
+    const purchase = this.createdPurchase();
+
+    if (
+      !purchase ||
+      (typeof purchase.expires_at !== 'string' && typeof purchase.expires_in_seconds !== 'number')
+    ) {
+      return null;
+    }
+
+    const remainingSeconds = this.checkoutCountdownService.remainingSeconds();
+
+    if (remainingSeconds === null) {
+      return null;
+    }
+
+    const minutes = Math.floor(remainingSeconds / 60);
+    const seconds = remainingSeconds % 60;
+
+    return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
+  });
   protected readonly cartSubtotal = computed(() => {
     const purchase = this.createdPurchase();
     return purchase ? parseFloat(purchase.subtotal) : 0;
@@ -135,6 +162,14 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   protected readonly qrPaymentStatus = signal<QrPaymentStatus>('idle');
   protected readonly isCheckingQrPayment = signal(false);
   protected readonly transferValidationStatus = signal<TransferValidationStatus>('idle');
+  private readonly transferPrimaryCandidateReason = signal<PurchasePaymentCandidateReason | null>(
+    null,
+  );
+  protected readonly transferVerificationErrorTitle = computed(() =>
+    this.transferPrimaryCandidateReason() === 'exact_amount_near_dni'
+      ? 'El DNI no corresponde con el de la transferencia'
+      : null,
+  );
   protected readonly whatsappUrl = computed(
     () =>
       this.tenantService
@@ -143,6 +178,28 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
   );
 
   constructor() {
+    effect(() => {
+      const remainingSeconds = this.checkoutCountdownService.remainingSeconds();
+      const purchaseId = this.createdPurchaseId() ?? this.createdPurchase()?.id ?? null;
+
+      if (remainingSeconds !== null && remainingSeconds > 0) {
+        this.expirationCheckPurchaseId = null;
+        return;
+      }
+
+      if (
+        remainingSeconds !== 0 ||
+        purchaseId === null ||
+        this.navigationStarted ||
+        this.expirationCheckPurchaseId === purchaseId
+      ) {
+        return;
+      }
+
+      this.expirationCheckPurchaseId = purchaseId;
+      void this.checkPurchaseAfterCountdownExpiration(purchaseId);
+    });
+
     this.form.statusChanges
       .pipe(startWith(this.form.status))
       .subscribe(() => this.isStep1Valid.set(this.form.valid));
@@ -228,6 +285,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
         nombre_apellido: formValue.nombre,
       });
       this.createdPurchase.set(purchase);
+      this.checkoutCountdownService.synchronize(purchase);
 
       this.stepper.next();
 
@@ -281,6 +339,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
     const tenant = this.tenantService.tenant();
     const purchaseId = this.createdPurchaseId();
     if (!tenant || !purchaseId) {
+      this.checkoutCountdownService.clear();
       return true;
     }
 
@@ -291,6 +350,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
       await firstValueFrom(this.cartService.loadCart());
       this.createdPurchaseId.set(null);
       this.createdPurchase.set(null);
+      this.checkoutCountdownService.clear();
 
       this.navigationStarted = true;
       return true;
@@ -299,11 +359,12 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
 
       if (this.isStockReservationExpiredError(error)) {
         this.showRequestError(error, 'La reserva de stock venció.');
-        this.cartService.loadCart().subscribe({
+        this.cartService.loadCart(true).subscribe({
           error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
         });
         this.createdPurchaseId.set(null);
         this.createdPurchase.set(null);
+        this.checkoutCountdownService.clear();
         this.navigationStarted = true;
         return true;
       }
@@ -382,6 +443,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
     this.transferDni.set(dni);
     this.stopTransferPolling();
     this.transferValidationStatus.set('idle');
+    this.transferPrimaryCandidateReason.set(null);
     this.isGeneratingIntent.set(true);
     try {
       const response = await this.checkoutService
@@ -438,6 +500,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
     this.stopTransferPolling();
     this.hasSubmittedTransfer.set(true);
     this.transferValidationStatus.set('checking');
+    this.transferPrimaryCandidateReason.set(null);
     this.transferPollingAttempts = 0;
 
     const runId = this.transferPollingRunId;
@@ -451,6 +514,9 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
         return;
       }
 
+      this.checkoutCountdownService.synchronize(purchase);
+      this.captureTransferCandidateReason(purchase);
+
       if (purchase.status === 'paid') {
         this.navigateToPurchaseStatus(purchaseId);
         return;
@@ -500,6 +566,9 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
         return;
       }
 
+      this.checkoutCountdownService.synchronize(purchase);
+      this.captureTransferCandidateReason(purchase);
+
       if (purchase.status === 'paid') {
         this.navigateToPurchaseStatus(purchaseId);
         return;
@@ -530,6 +599,14 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
     this.scheduleTransferPoll(runId);
   }
 
+  private captureTransferCandidateReason(purchase: PurchaseStatusResponse): void {
+    const reason = purchase.payment_verification?.primary?.reason;
+
+    if (reason) {
+      this.transferPrimaryCandidateReason.set(reason);
+    }
+  }
+
   private stopTransferPolling(): void {
     this.transferPollingRunId += 1;
 
@@ -586,6 +663,8 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
         return;
       }
 
+      this.checkoutCountdownService.synchronize(purchase);
+
       if (purchase.status === 'paid') {
         this.handleConfirmedPayment(purchaseId);
         return;
@@ -659,10 +738,40 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
     this.navigationStarted = true;
     this.stopQrPolling();
     this.stopTransferPolling();
+    this.checkoutCountdownService.clear();
 
     void this.router.navigate(['/checkout/status', purchaseId]);
   }
 
+  private async checkPurchaseAfterCountdownExpiration(purchaseId: number): Promise<void> {
+    const tenant = this.tenantService.tenant();
+
+    if (!tenant || this.navigationStarted) {
+      return;
+    }
+
+    try {
+      const purchase = await this.checkoutService
+        .withCustomLoading()
+        .getPurchase(tenant.codigo, purchaseId);
+
+      if (this.navigationStarted) {
+        return;
+      }
+
+      if (purchase.status === 'expired') {
+        this.navigateToExpiredPurchaseStatus();
+        return;
+      }
+
+      this.checkoutCountdownService.synchronize(purchase);
+    } catch (error) {
+      if (this.isPurchaseExpiredError(error)) {
+        this.navigateToExpiredPurchaseStatus();
+      }
+    }
+  }
+
   private async loadPurchase(purchaseId: number): Promise<void> {
     const tenant = this.tenantService.tenant();
     if (!tenant) {
@@ -696,6 +805,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
 
       this.createdPurchaseId.set(purchase.id);
       this.createdPurchase.set(purchase);
+      this.checkoutCountdownService.synchronize(purchase);
       this.checkoutStepIndex.set(purchase.status === 'pending_payment' ? 1 : 0);
 
       if (
@@ -779,6 +889,7 @@ export class CheckoutPageComponent implements OnInit, OnDestroy {
       this.navigationStarted = true;
       this.stopQrPolling();
       this.stopTransferPolling();
+      this.checkoutCountdownService.clear();
       void this.router.navigate(['/checkout/status', purchaseId], {
         queryParams: { status: 'expired' },
       });

src/app/features/store/pages/checkout-page/checkout-payment-step.component.html

@@ -53,6 +53,7 @@
           [validationStatus]="transferValidationStatus()"
           [paymentAmount]="qrPaymentAmount()"
           [whatsappUrl]="whatsappUrl()"
+          [verificationErrorTitle]="transferVerificationErrorTitle()"
           (copyTransferValue)="requestCopy($event.field, $event.value)"
           (submitDni)="generateTransferIntent.emit($event)"
           (completePurchase)="complete.emit()"

src/app/features/store/pages/checkout-page/checkout-payment-step.component.ts

@@ -33,6 +33,7 @@ export class CheckoutPaymentStepComponent {
   readonly qrPaymentAmount = input<number>(0);
   readonly whatsappUrl = input<string | null>(null);
   readonly transferValidationStatus = input<TransferValidationStatus>('idle');
+  readonly transferVerificationErrorTitle = input<string | null>(null);
 
   readonly paymentMethodChange = output<PaymentMethod>();
   readonly copyTransferValue = output<{ field: TransferField; value: string }>();

src/app/features/store/pages/checkout-page/components/checkout-payment-transfer/checkout-payment-transfer.component.html

@@ -3,6 +3,7 @@
     <app-payment-verification-error
       [paymentAmount]="paymentAmount()"
       [whatsappUrl]="whatsappUrl()"
+      [title]="verificationErrorTitle()"
     />
   } @else {
     <div class="dni-form-container">

src/app/features/store/pages/checkout-page/components/checkout-payment-transfer/checkout-payment-transfer.component.spec.ts

@@ -47,4 +47,23 @@ describe('CheckoutPaymentTransferComponent', () => {
     expect(whatsapp).toBeDefined();
     expect(element.querySelector('.payment-verification')).toBeNull();
   });
+
+  it('shows a custom validation title for a near DNI candidate', async () => {
+    await TestBed.configureTestingModule({
+      imports: [CheckoutPaymentTransferComponent],
+    }).compileComponents();
+
+    const fixture = TestBed.createComponent(CheckoutPaymentTransferComponent);
+    fixture.componentRef.setInput('validationStatus', 'error');
+    fixture.componentRef.setInput(
+      'verificationErrorTitle',
+      'El DNI no corresponde con el de la transferencia',
+    );
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.textContent).toContain(
+      'El DNI no corresponde con el de la transferencia',
+    );
+    expect(fixture.nativeElement.textContent).not.toContain('No pudimos verificar el pago de');
+  });
 });

src/app/features/store/pages/checkout-page/components/checkout-payment-transfer/checkout-payment-transfer.component.ts

@@ -41,6 +41,7 @@ export class CheckoutPaymentTransferComponent implements OnInit {
   readonly validationStatus = input<TransferValidationStatus>('idle');
   readonly paymentAmount = input<number>(0);
   readonly whatsappUrl = input<string | null>(null);
+  readonly verificationErrorTitle = input<string | null>(null);
 
   readonly copyTransferValue = output<{ field: TransferField; value: string }>();
   readonly submitDni = output<string>();

src/app/features/store/pages/checkout-page/components/payment-verification-error/payment-verification-error.component.html

@@ -2,7 +2,7 @@
   <div class="payment-timeout__icon" aria-hidden="true">
     <i class="fa-solid fa-xmark"></i>
   </div>
-  <h4 class="payment-timeout__title">No pudimos verificar el pago de {{ formattedAmount() }}.</h4>
+  <h4 class="payment-timeout__title">{{ displayTitle() }}</h4>
   <p class="payment-timeout__message">Por favor contactate con nosotros para resolverlo.</p>
   @if (whatsappUrl()) {
     <app-button

src/app/features/store/pages/checkout-page/components/payment-verification-error/payment-verification-error.component.ts

@@ -13,6 +13,7 @@ import { ButtonComponent } from '../../../../../../shared/components/button/butt
 export class PaymentVerificationErrorComponent {
   readonly paymentAmount = input<number>(0);
   readonly whatsappUrl = input<string | null>(null);
+  readonly title = input<string | null>(null);
 
   protected readonly formattedAmount = computed(() =>
     new Intl.NumberFormat('es-AR', {
@@ -21,6 +22,9 @@ export class PaymentVerificationErrorComponent {
       maximumFractionDigits: 0,
     }).format(this.paymentAmount()),
   );
+  protected readonly displayTitle = computed(
+    () => this.title() ?? `No pudimos verificar el pago de ${this.formattedAmount()}.`,
+  );
 
   protected openWhatsApp(): void {
     const url = this.whatsappUrl();

src/app/features/store/pages/purchase-status-page/purchase-status-page.component.html

@@ -17,7 +17,9 @@
 
     <div class="status-content__section status-content__section--secondary">
       @if (ticketsRoute()) {
-        <p class="status-content__message">A continuación, vas a poder ver los tickets que debés presentar en el evento.</p>
+        <p class="status-content__message">
+          A continuación, vas a poder ver los tickets que debés presentar en el evento.
+        </p>
 
         <app-button
           type="button"
@@ -29,7 +31,9 @@
           <span>Mis tickets</span>
         </app-button>
       } @else if (whatsappUrl()) {
-        <p class="status-content__message">Comunicate con nosotros para coordinar el env&iacute;o.</p>
+        <p class="status-content__message">
+          Comunicate con nosotros para coordinar el env&iacute;o.
+        </p>
 
         <app-button
           type="button"
@@ -51,13 +55,21 @@
         <i class="fa-solid fa-clock"></i>
       </div>
       <h2 class="status-content__title">ESTAMOS VERIFICANDO TU PAGO</h2>
-      <p class="status-content__subtitle">Tu compra ya fue registrada y estamos esperando la confirmaci&oacute;n del pago.</p>
+      <p class="status-content__subtitle">
+        Tu compra ya fue registrada y estamos esperando la confirmaci&oacute;n del pago.
+      </p>
     </div>
 
     <hr class="status-content__divider" />
 
     <div class="status-content__section status-content__section--secondary">
-      <p class="status-content__message">Te avisaremos cuando el pago sea confirmado.</p>
+      @if (paymentIssueMessage()) {
+        <p class="status-content__message">
+          {{ paymentIssueMessage() }} Estamos revisando el pago.
+        </p>
+      } @else {
+        <p class="status-content__message">Te avisaremos cuando el pago sea confirmado.</p>
+      }
     </div>
   } @else if (status() === 'expired') {
     <div class="status-content__section status-content__section--primary">
@@ -65,13 +77,17 @@
         <i class="fa-solid fa-clock"></i>
       </div>
       <h2 class="status-content__title">LA COMPRA VENCI&Oacute;</h2>
-      <p class="status-content__subtitle">El plazo de pago termin&oacute; y liberamos el stock reservado.</p>
+      <p class="status-content__subtitle">
+        El plazo de pago termin&oacute; y liberamos el stock reservado.
+      </p>
     </div>
 
     <hr class="status-content__divider" />
 
     <div class="status-content__section status-content__section--secondary">
-      <p class="status-content__message">Pod&eacute;s volver a la tienda e iniciar una nueva compra.</p>
+      <p class="status-content__message">
+        Pod&eacute;s volver a la tienda e iniciar una nueva compra.
+      </p>
     </div>
   } @else if (status() === 'rejected') {
     <div class="status-content__section status-content__section--primary">
@@ -79,7 +95,9 @@
         <i class="fa-solid fa-triangle-exclamation"></i>
       </div>
       <h2 class="status-content__title">NO PUDIMOS CONFIRMAR EL PAGO</h2>
-      <p class="status-content__subtitle">Revis&aacute; el medio de pago o comunicate con nosotros para continuar.</p>
+      <p class="status-content__subtitle">
+        Revis&aacute; el medio de pago o comunicate con nosotros para continuar.
+      </p>
     </div>
 
     <hr class="status-content__divider" />
@@ -114,7 +132,9 @@
     <hr class="status-content__divider" />
 
     <div class="status-content__section status-content__section--secondary">
-      <p class="status-content__message">Volv&eacute; a ingresar m&aacute;s tarde. Si el problema sigue, comunicate con nosotros.</p>
+      <p class="status-content__message">
+        Volv&eacute; a ingresar m&aacute;s tarde. Si el problema sigue, comunicate con nosotros.
+      </p>
 
       @if (whatsappUrl()) {
         <div class="status-content__actions">

src/app/features/store/pages/purchase-status-page/purchase-status-page.component.spec.ts

@@ -67,9 +67,13 @@ describe('PurchaseStatusPageComponent', () => {
     TestBed.resetTestingModule();
   });
 
-  async function render(hasGeneratedTickets: boolean, forcedStatus?: string) {
+  async function render(
+    hasGeneratedTickets: boolean,
+    forcedStatus?: string,
+    purchaseResponse = purchase(hasGeneratedTickets),
+  ) {
     const checkoutService = {
-      getPurchase: vi.fn().mockResolvedValue(purchase(hasGeneratedTickets)),
+      getPurchase: vi.fn().mockResolvedValue(purchaseResponse),
       withCustomLoading() {
         return this;
       },
@@ -91,9 +95,7 @@ describe('PurchaseStatusPageComponent', () => {
           useValue: {
             snapshot: {
               paramMap: convertToParamMap({ id: '42' }),
-              queryParamMap: convertToParamMap(
-                forcedStatus ? { status: forcedStatus } : {},
-              ),
+              queryParamMap: convertToParamMap(forcedStatus ? { status: forcedStatus } : {}),
             },
           },
         },
@@ -159,6 +161,30 @@ describe('PurchaseStatusPageComponent', () => {
     expect(checkoutService.getPurchase).not.toHaveBeenCalled();
   });
 
+  it('shows the primary transfer candidate issue while the purchase is in review', async () => {
+    const { element } = await render(false, undefined, {
+      status: 'in_review',
+      payment_verification: {
+        status: 'candidate',
+        candidate_count: 2,
+        primary: {
+          reason: 'exact_dni_near_amount',
+          dni_distance: 0,
+          payment_amount: '49000.00',
+          purchase_amount: '50000.00',
+          amount_difference: '1000.00',
+          confidence: 'high',
+          detected_at: '2026-08-27T18:00:00-03:00',
+        },
+        reasons: ['exact_dni_near_amount', 'exact_amount_near_dni'],
+      },
+    } as PurchaseDetailResponse);
+
+    expect(element.textContent).toContain('Encontramos 2 transferencias posibles.');
+    expect(element.textContent).toMatch(/diferencia de \$\s*1\.000/);
+    expect(element.textContent).toContain('Estamos revisando el pago.');
+  });
+
   it('polls every five seconds while the payment is pending and shows the confirmation', async () => {
     vi.useFakeTimers();
 

src/app/features/store/pages/purchase-status-page/purchase-status-page.component.ts

@@ -13,6 +13,7 @@ import { ActivatedRoute, Router } from '@angular/router';
 
 import {
   CheckoutService,
+  PurchasePaymentVerificationResponse,
   PurchaseStatusResponse,
 } from '../../../../core/services/checkout.service';
 import { CartService } from '../../../../core/services/cart/cart.service';
@@ -48,6 +49,7 @@ export class PurchaseStatusPageComponent implements OnInit, OnDestroy {
   protected readonly isLoading = signal(true);
   protected readonly status = signal<PurchaseStatusView>('pending');
   protected readonly hasGeneratedTickets = signal(false);
+  protected readonly paymentIssueMessage = signal<string | null>(null);
   protected readonly ticketsRoute = computed(() => {
     if (!this.hasGeneratedTickets()) {
       return null;
@@ -105,6 +107,7 @@ export class PurchaseStatusPageComponent implements OnInit, OnDestroy {
       const status = this.resolveStatus(purchase);
       this.status.set(status);
       this.hasGeneratedTickets.set(purchase.has_generated_tickets === true);
+      this.paymentIssueMessage.set(this.resolvePaymentIssueMessage(purchase.payment_verification));
 
       if (status === 'approved') {
         this.cartService.clearCart();
@@ -169,6 +172,43 @@ export class PurchaseStatusPageComponent implements OnInit, OnDestroy {
     return 'pending';
   }
 
+  private resolvePaymentIssueMessage(
+    verification?: PurchasePaymentVerificationResponse,
+  ): string | null {
+    const primary = verification?.primary;
+
+    if (!primary) {
+      return null;
+    }
+
+    const primaryMessage = (() => {
+      switch (primary.reason) {
+        case 'ambiguous_exact_match':
+          return 'Encontramos una transferencia que también coincide con otra compra.';
+        case 'exact_dni_near_amount':
+          return `El DNI coincide, pero el monto transferido tiene una diferencia de ${this.formatCurrency(primary.amount_difference)}.`;
+        case 'exact_amount_near_dni':
+          return primary.dni_distance === null
+            ? 'El monto coincide, pero el DNI del pagador es diferente.'
+            : `El monto coincide, pero el DNI del pagador presenta ${primary.dni_distance} ${primary.dni_distance === 1 ? 'diferencia' : 'diferencias'} de escritura.`;
+      }
+    })();
+
+    if (verification.candidate_count > 1) {
+      return `Encontramos ${verification.candidate_count} transferencias posibles. ${primaryMessage}`;
+    }
+
+    return primaryMessage;
+  }
+
+  private formatCurrency(amount: string): string {
+    return new Intl.NumberFormat('es-AR', {
+      style: 'currency',
+      currency: 'ARS',
+      maximumFractionDigits: 2,
+    }).format(Number(amount));
+  }
+
   private isPurchaseExpiredError(error: unknown): boolean {
     if (typeof error !== 'object' || error === null || !('error' in error)) {
       return false;

src/app/features/store/pages/search-page/search-page.component.ts

@@ -212,7 +212,7 @@ export class SearchPageComponent {
       this.toastService.danger(message);
 
       if (error instanceof HttpErrorResponse && isExpiredStockReservationResponse(error.error)) {
-        this.cartService.loadCart().subscribe({
+        this.cartService.loadCart(true).subscribe({
           error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
         });
       }

src/app/features/store/pages/store-home-page/store-home-page.component.ts

@@ -224,7 +224,7 @@ export class StoreHomePageComponent implements OnInit, OnDestroy {
 
       if (error instanceof HttpErrorResponse && isExpiredStockReservationResponse(error.error)) {
         this.toastService.danger(error.error.message);
-        this.cartService.loadCart().subscribe({
+        this.cartService.loadCart(true).subscribe({
           error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
         });
         return;

src/app/shared/components/cart/cart.component.ts

@@ -330,7 +330,7 @@ export class CartComponent {
       return;
     }
 
-    this.cartService.loadCart().subscribe({
+    this.cartService.loadCart(true).subscribe({
       error: (refreshError) => console.error('Error refreshing expired cart', refreshError),
     });
   }

src/app/shared/components/image-modal/image-modal.component.html

@@ -0,0 +1,58 @@
+<div
+  class="image-modal"
+  [class.image-modal--gesturing]="gestureActive()"
+  [class.image-modal--settling]="swipeSettling()"
+  [style.transform]="swipeTransform()"
+>
+  <div
+    #viewport
+    class="image-modal__viewport"
+    [class.image-modal__viewport--zoomed]="zoom() > data.minZoom"
+    (wheel)="onWheel($event)"
+    (dblclick)="onDoubleClick($event)"
+    (pointerdown)="onPointerDown($event)"
+    (pointermove)="onPointerMove($event)"
+    (pointerup)="onPointerUp($event)"
+    (pointercancel)="onPointerUp($event)"
+  >
+    @if (!imageFailed()) {
+      <img
+        #image
+        class="image-modal__image"
+        [src]="data.src"
+        [alt]="data.alt"
+        [style.transform]="transform()"
+        decoding="async"
+        draggable="false"
+        (load)="onImageLoad()"
+        (error)="imageFailed.set(true)"
+      />
+    } @else {
+      <p class="image-modal__error" role="alert">No se pudo cargar la imagen.</p>
+    }
+  </div>
+
+  <div class="image-modal__controls" aria-label="Controles de zoom">
+    <button
+      type="button"
+      class="image-modal__control"
+      aria-label="Alejar"
+      [disabled]="zoom() <= data.minZoom"
+      (click)="zoomOut()"
+    >
+      &minus;
+    </button>
+    <button type="button" class="image-modal__zoom" aria-label="Restablecer zoom" (click)="reset()">
+      {{ zoomLabel() }}
+    </button>
+    <button
+      type="button"
+      class="image-modal__control"
+      aria-label="Acercar"
+      [disabled]="zoom() >= data.maxZoom"
+      (click)="zoomIn()"
+    >
+      &plus;
+    </button>
+  </div>
+</div>

src/app/shared/components/image-modal/image-modal.component.scss

@@ -0,0 +1,146 @@
+:host {
+  display: flex;
+  min-height: 0;
+  flex: 1;
+}
+
+.image-modal {
+  position: relative;
+  display: flex;
+  min-width: 0;
+  min-height: 0;
+  flex: 1;
+  flex-direction: column;
+  overflow: hidden;
+  background: black;
+  transform-origin: center top;
+}
+
+.image-modal--settling {
+  transition: transform 180ms ease-out;
+}
+
+.image-modal--gesturing {
+  will-change: transform;
+}
+
+.image-modal__viewport {
+  display: flex;
+  min-width: 0;
+  min-height: 0;
+  flex: 1;
+  align-items: center;
+  justify-content: center;
+  overflow: hidden;
+  cursor: zoom-in;
+  touch-action: none;
+  user-select: none;
+}
+
+.image-modal__viewport--zoomed {
+  cursor: grab;
+}
+
+.image-modal__viewport--zoomed:active {
+  cursor: grabbing;
+}
+
+.image-modal__image {
+  display: block;
+  max-width: 100%;
+  max-height: 100%;
+  object-fit: contain;
+  transform-origin: center;
+  transition: transform 120ms ease-out;
+  -webkit-user-drag: none;
+}
+
+.image-modal--gesturing .image-modal__image {
+  transition: none;
+  will-change: transform;
+}
+
+.image-modal__viewport:active .image-modal__image {
+  transition: none;
+}
+
+.image-modal__error {
+  margin: 1rem;
+  color: #ffffff;
+  text-align: center;
+}
+
+.image-modal__controls {
+  position: absolute;
+  right: 50%;
+  bottom: max(1.25rem, env(safe-area-inset-bottom));
+  z-index: 1;
+  display: flex;
+  align-items: center;
+  overflow: hidden;
+  border: 1px solid rgba(255, 255, 255, 0.25);
+  border-radius: 2rem;
+  background: rgba(20, 20, 20, 0.78);
+  box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.3);
+  transform: translateX(50%);
+  backdrop-filter: blur(0.5rem);
+}
+
+.image-modal__control,
+.image-modal__zoom {
+  display: inline-flex;
+  height: 2.75rem;
+  align-items: center;
+  justify-content: center;
+  border: 0;
+  color: #ffffff;
+  background: transparent;
+}
+
+.image-modal__control {
+  width: 2.75rem;
+  font-size: 1.5rem;
+}
+
+.image-modal__zoom {
+  min-width: 4rem;
+  padding: 0 0.5rem;
+  font-size: 0.875rem;
+  font-variant-numeric: tabular-nums;
+}
+
+.image-modal__control:hover:not(:disabled),
+.image-modal__zoom:hover {
+  background: rgba(255, 255, 255, 0.12);
+}
+
+.image-modal__control:focus-visible,
+.image-modal__zoom:focus-visible {
+  outline: 2px solid #ffffff;
+  outline-offset: -3px;
+}
+
+.image-modal__control:disabled {
+  opacity: 0.35;
+}
+
+@media (max-width: 576px) {
+  .image-modal__controls {
+    bottom: max(1rem, env(safe-area-inset-bottom));
+    background: rgba(20, 20, 20, 0.94);
+    backdrop-filter: none;
+  }
+}
+
+@media (pointer: coarse) {
+  .image-modal__controls {
+    background: rgba(20, 20, 20, 0.94);
+    backdrop-filter: none;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .image-modal__image {
+    transition: none;
+  }
+}

src/app/shared/components/image-modal/image-modal.component.spec.ts

@@ -0,0 +1,165 @@
+import '@angular/compiler';
+import { ComponentFixture, TestBed, getTestBed } from '@angular/core/testing';
+import { BrowserTestingModule, platformBrowserTesting } from '@angular/platform-browser/testing';
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { ImageModalData, MODAL_DATA, ModalRef } from '../../../core/services/modal.service';
+import { ImageModalComponent } from './image-modal.component';
+
+describe('ImageModalComponent', () => {
+  let fixture: ComponentFixture<ImageModalComponent>;
+  const modalRef = { dismiss: vi.fn() };
+  const data: ImageModalData = {
+    src: '/images/producto.webp',
+    alt: 'Vista frontal del producto',
+    initialZoom: 1,
+    minZoom: 1,
+    maxZoom: 2,
+  };
+
+  beforeAll(() => {
+    try {
+      getTestBed().initTestEnvironment(BrowserTestingModule, platformBrowserTesting());
+    } catch {
+      // Test environment may already be initialized by another setup entrypoint.
+    }
+  });
+
+  beforeEach(async () => {
+    modalRef.dismiss.mockReset();
+    await TestBed.configureTestingModule({
+      imports: [ImageModalComponent],
+      providers: [
+        { provide: MODAL_DATA, useValue: data },
+        { provide: ModalRef, useValue: modalRef },
+      ],
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(ImageModalComponent);
+    fixture.detectChanges();
+  });
+
+  afterEach(() => {
+    fixture.destroy();
+    TestBed.resetTestingModule();
+  });
+
+  it('renders the image and accessible zoom controls', () => {
+    const element = fixture.nativeElement as HTMLElement;
+    const image = element.querySelector('img') as HTMLImageElement;
+
+    expect(image.getAttribute('src')).toBe('/images/producto.webp');
+    expect(image.alt).toBe('Vista frontal del producto');
+    expect(element.querySelector('[aria-label="Acercar"]')).not.toBeNull();
+    expect(element.querySelector('[aria-label="Alejar"]')).not.toBeNull();
+  });
+
+  it('zooms with controls, respects limits, and resets', () => {
+    const element = fixture.nativeElement as HTMLElement;
+    const zoomIn = element.querySelector('[aria-label="Acercar"]') as HTMLButtonElement;
+    const zoomOut = element.querySelector('[aria-label="Alejar"]') as HTMLButtonElement;
+    const reset = element.querySelector('[aria-label="Restablecer zoom"]') as HTMLButtonElement;
+
+    zoomIn.click();
+    fixture.detectChanges();
+    expect(reset.textContent).toContain('150%');
+    expect(zoomOut.disabled).toBe(false);
+
+    zoomIn.click();
+    fixture.detectChanges();
+    expect(reset.textContent).toContain('200%');
+    expect(zoomIn.disabled).toBe(true);
+
+    reset.click();
+    fixture.detectChanges();
+    expect(reset.textContent).toContain('100%');
+    expect(zoomOut.disabled).toBe(true);
+  });
+
+  it('supports pinch zoom through touch pointer events', async () => {
+    const viewport = fixture.nativeElement.querySelector('.image-modal__viewport') as HTMLElement;
+    const zoom = fixture.nativeElement.querySelector(
+      '[aria-label="Restablecer zoom"]',
+    ) as HTMLButtonElement;
+
+    viewport.dispatchEvent(pointerEvent('pointerdown', 1, 100, 100));
+    viewport.dispatchEvent(pointerEvent('pointerdown', 2, 200, 100));
+    viewport.dispatchEvent(pointerEvent('pointermove', 2, 250, 100));
+    await renderNextFrame();
+    fixture.detectChanges();
+
+    expect(zoom.textContent).toContain('150%');
+  });
+
+  it('dismisses with a downward swipe while the image is at its base zoom', async () => {
+    const viewport = fixture.nativeElement.querySelector('.image-modal__viewport') as HTMLElement;
+    const modal = fixture.nativeElement.querySelector('.image-modal') as HTMLElement;
+
+    viewport.dispatchEvent(pointerEvent('pointerdown', 1, 150, 100));
+    viewport.dispatchEvent(pointerEvent('pointermove', 1, 155, 230));
+    await renderNextFrame();
+    fixture.detectChanges();
+
+    expect(modal.style.transform).toBe('translate3d(0, 130px, 0)');
+    expect(Number(modal.style.opacity)).toBeLessThan(1);
+
+    viewport.dispatchEvent(pointerEvent('pointerup', 1, 155, 230));
+
+    expect(modalRef.dismiss).toHaveBeenCalledWith('swipe');
+  });
+
+  it('returns smoothly to its position when the swipe is too short', async () => {
+    const viewport = fixture.nativeElement.querySelector('.image-modal__viewport') as HTMLElement;
+    const modal = fixture.nativeElement.querySelector('.image-modal') as HTMLElement;
+
+    viewport.dispatchEvent(pointerEvent('pointerdown', 1, 150, 100));
+    viewport.dispatchEvent(pointerEvent('pointermove', 1, 150, 160));
+    await renderNextFrame();
+    fixture.detectChanges();
+    expect(modal.style.transform).toBe('translate3d(0, 60px, 0)');
+
+    viewport.dispatchEvent(pointerEvent('pointerup', 1, 150, 160));
+    fixture.detectChanges();
+
+    expect(modalRef.dismiss).not.toHaveBeenCalled();
+    expect(modal.classList.contains('image-modal--settling')).toBe(true);
+    expect(modal.style.transform).toBe('translate3d(0, 0px, 0)');
+  });
+
+  it('does not dismiss with a downward gesture while the image is zoomed', () => {
+    const element = fixture.nativeElement as HTMLElement;
+    const viewport = element.querySelector('.image-modal__viewport') as HTMLElement;
+    const zoomIn = element.querySelector('[aria-label="Acercar"]') as HTMLButtonElement;
+    zoomIn.click();
+    fixture.detectChanges();
+
+    viewport.dispatchEvent(pointerEvent('pointerdown', 1, 150, 100));
+    viewport.dispatchEvent(pointerEvent('pointermove', 1, 155, 230));
+    viewport.dispatchEvent(pointerEvent('pointerup', 1, 155, 230));
+
+    expect(modalRef.dismiss).not.toHaveBeenCalled();
+  });
+
+  it('shows a fallback when the image cannot be loaded', () => {
+    const image = fixture.nativeElement.querySelector('img') as HTMLImageElement;
+    image.dispatchEvent(new Event('error'));
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.querySelector('[role="alert"]')?.textContent).toContain(
+      'No se pudo cargar la imagen',
+    );
+  });
+});
+
+function pointerEvent(type: string, pointerId: number, clientX: number, clientY: number): Event {
+  const event = new MouseEvent(type, { bubbles: true, clientX, clientY });
+  Object.defineProperties(event, {
+    pointerId: { value: pointerId },
+    pointerType: { value: 'touch' },
+  });
+  return event;
+}
+
+async function renderNextFrame(): Promise<void> {
+  await new Promise<void>((resolve) => requestAnimationFrame(() => resolve()));
+}

src/app/shared/components/image-modal/image-modal.component.ts

@@ -0,0 +1,395 @@
+import {
+  ChangeDetectionStrategy,
+  Component,
+  DestroyRef,
+  ElementRef,
+  computed,
+  inject,
+  signal,
+  viewChild,
+} from '@angular/core';
+
+import { ImageModalData, MODAL_DATA, ModalRef } from '../../../core/services/modal.service';
+
+const SWIPE_DISMISS_DISTANCE = 100;
+const SWIPE_DIRECTION_RATIO = 1.25;
+
+interface Point {
+  x: number;
+  y: number;
+}
+
+interface ViewerGeometry {
+  imageHeight: number;
+  imageWidth: number;
+  viewportHeight: number;
+  viewportLeft: number;
+  viewportTop: number;
+  viewportWidth: number;
+}
+
+@Component({
+  selector: 'app-image-modal',
+  templateUrl: './image-modal.component.html',
+  styleUrl: './image-modal.component.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ImageModalComponent {
+  protected readonly data = inject<ImageModalData>(MODAL_DATA);
+  private readonly modalRef = inject<ModalRef<void>>(ModalRef);
+  private readonly destroyRef = inject(DestroyRef);
+  private readonly viewport = viewChild.required<ElementRef<HTMLElement>>('viewport');
+  private readonly image = viewChild<ElementRef<HTMLImageElement>>('image');
+  private readonly pointers = new Map<number, Point>();
+
+  protected readonly zoom = signal(this.data.initialZoom);
+  protected readonly offsetX = signal(0);
+  protected readonly offsetY = signal(0);
+  protected readonly imageFailed = signal(false);
+  protected readonly swipeOffsetY = signal(0);
+  protected readonly swipeSettling = signal(false);
+  protected readonly gestureActive = signal(false);
+  protected readonly transform = computed(
+    () => `translate3d(${this.offsetX()}px, ${this.offsetY()}px, 0) scale(${this.zoom()})`,
+  );
+  protected readonly zoomLabel = computed(() => `${Math.round(this.zoom() * 100)}%`);
+  protected readonly swipeTransform = computed(() => `translate3d(0, ${this.swipeOffsetY()}px, 0)`);
+
+  private dragStart: Point | null = null;
+  private dragOffset: Point = { x: 0, y: 0 };
+  private pinchDistance = 0;
+  private pinchZoom = 1;
+  private pinchLocal: Point = { x: 0, y: 0 };
+  private pointerDownAt: Point | null = null;
+  private gestureMoved = false;
+  private hadMultiplePointers = false;
+  private lastTapAt = 0;
+  private swipeStart: Point | null = null;
+  private geometry: ViewerGeometry | null = null;
+  private animationFrameId: number | null = null;
+
+  constructor() {
+    this.destroyRef.onDestroy(() => this.cancelGestureFrame());
+  }
+
+  protected zoomIn(): void {
+    this.setZoomAt(Math.min(this.data.maxZoom, this.zoom() + 0.5));
+  }
+
+  protected zoomOut(): void {
+    this.setZoomAt(Math.max(this.data.minZoom, this.zoom() - 0.5));
+  }
+
+  protected reset(): void {
+    this.zoom.set(this.data.initialZoom);
+    this.offsetX.set(0);
+    this.offsetY.set(0);
+  }
+
+  protected onWheel(event: WheelEvent): void {
+    event.preventDefault();
+    const factor = event.deltaY < 0 ? 1.15 : 1 / 1.15;
+    this.setZoomAt(this.zoom() * factor, event.clientX, event.clientY);
+  }
+
+  protected onDoubleClick(event: MouseEvent): void {
+    this.toggleZoom(event.clientX, event.clientY);
+  }
+
+  protected onPointerDown(event: PointerEvent): void {
+    if (event.pointerType === 'mouse' && event.button !== 0) {
+      return;
+    }
+
+    event.preventDefault();
+    if (this.pointers.size === 0) {
+      this.refreshGeometry();
+      this.gestureActive.set(true);
+    }
+    this.viewport().nativeElement.setPointerCapture?.(event.pointerId);
+    const point = { x: event.clientX, y: event.clientY };
+    this.pointers.set(event.pointerId, point);
+    this.pointerDownAt = point;
+    this.gestureMoved = false;
+
+    if (this.pointers.size === 1) {
+      this.swipeSettling.set(false);
+      this.dragStart = point;
+      this.dragOffset = { x: this.offsetX(), y: this.offsetY() };
+      this.swipeStart =
+        event.pointerType === 'touch' && this.zoom() <= this.data.minZoom + 0.01 ? point : null;
+    } else if (this.pointers.size === 2) {
+      this.hadMultiplePointers = true;
+      this.swipeStart = null;
+      this.swipeOffsetY.set(0);
+      this.beginPinch();
+    }
+  }
+
+  protected onPointerMove(event: PointerEvent): void {
+    if (!this.pointers.has(event.pointerId)) {
+      return;
+    }
+
+    const point = { x: event.clientX, y: event.clientY };
+    this.pointers.set(event.pointerId, point);
+
+    if (this.pointerDownAt && this.distance(this.pointerDownAt, point) > 4) {
+      this.gestureMoved = true;
+    }
+
+    this.scheduleGestureFrame();
+  }
+
+  protected onPointerUp(event: PointerEvent): void {
+    const wasTouch = event.pointerType === 'touch';
+    const trackedPoint = this.pointers.get(event.pointerId);
+    const endPoint = trackedPoint ? { x: event.clientX, y: event.clientY } : null;
+    if (endPoint) {
+      this.pointers.set(event.pointerId, endPoint);
+      if (this.animationFrameId !== null) {
+        this.flushGestureFrame();
+      } else {
+        this.applyPointerMovement();
+      }
+    }
+    const shouldDismiss =
+      event.type === 'pointerup' &&
+      wasTouch &&
+      endPoint !== null &&
+      this.isSwipeDown(this.swipeStart, endPoint);
+    this.pointers.delete(event.pointerId);
+    const viewport = this.viewport().nativeElement;
+    if (viewport.hasPointerCapture?.(event.pointerId)) {
+      viewport.releasePointerCapture(event.pointerId);
+    }
+
+    if (shouldDismiss) {
+      this.resetGesture();
+      this.modalRef.dismiss('swipe');
+      return;
+    }
+
+    if (wasTouch && endPoint && !this.gestureMoved && !this.hadMultiplePointers) {
+      const now = Date.now();
+      if (now - this.lastTapAt < 300) {
+        this.toggleZoom(endPoint.x, endPoint.y);
+        this.lastTapAt = 0;
+      } else {
+        this.lastTapAt = now;
+      }
+    }
+
+    if (this.pointers.size === 1) {
+      const remaining = [...this.pointers.values()][0];
+      this.dragStart = remaining;
+      this.dragOffset = { x: this.offsetX(), y: this.offsetY() };
+    } else if (this.pointers.size === 0) {
+      this.dragStart = null;
+      this.pointerDownAt = null;
+      this.hadMultiplePointers = false;
+      this.swipeStart = null;
+      this.gestureActive.set(false);
+      if (this.swipeOffsetY() > 0) {
+        this.swipeSettling.set(true);
+        this.swipeOffsetY.set(0);
+      }
+      this.clampOffset();
+    }
+  }
+
+  protected onImageLoad(): void {
+    this.imageFailed.set(false);
+    this.refreshGeometry();
+    this.clampOffset();
+  }
+
+  private beginPinch(): void {
+    const [first, second] = [...this.pointers.values()];
+    const midpoint = this.midpoint(first, second);
+    const geometry = this.geometry ?? this.refreshGeometry();
+    if (!geometry) {
+      return;
+    }
+
+    this.pinchDistance = Math.max(1, this.distance(first, second));
+    this.pinchZoom = this.zoom();
+    this.pinchLocal = {
+      x:
+        (midpoint.x - (geometry.viewportLeft + geometry.viewportWidth / 2) - this.offsetX()) /
+        this.zoom(),
+      y:
+        (midpoint.y - (geometry.viewportTop + geometry.viewportHeight / 2) - this.offsetY()) /
+        this.zoom(),
+    };
+  }
+
+  private toggleZoom(clientX?: number, clientY?: number): void {
+    const target =
+      this.zoom() > this.data.minZoom + 0.01
+        ? this.data.minZoom
+        : Math.min(this.data.maxZoom, Math.max(2, this.data.minZoom));
+    this.setZoomAt(target, clientX, clientY);
+  }
+
+  private setZoomAt(value: number, clientX?: number, clientY?: number): void {
+    const nextZoom = this.clampZoom(value);
+    const currentZoom = this.zoom();
+    const geometry = this.refreshGeometry();
+
+    if (clientX !== undefined && clientY !== undefined && currentZoom > 0 && geometry) {
+      const pointX = clientX - (geometry.viewportLeft + geometry.viewportWidth / 2);
+      const pointY = clientY - (geometry.viewportTop + geometry.viewportHeight / 2);
+      const localX = (pointX - this.offsetX()) / currentZoom;
+      const localY = (pointY - this.offsetY()) / currentZoom;
+      this.offsetX.set(pointX - localX * nextZoom);
+      this.offsetY.set(pointY - localY * nextZoom);
+    }
+
+    this.zoom.set(nextZoom);
+    if (nextZoom <= this.data.minZoom) {
+      this.offsetX.set(0);
+      this.offsetY.set(0);
+    }
+    this.clampOffset();
+  }
+
+  private clampZoom(value: number): number {
+    return Math.min(this.data.maxZoom, Math.max(this.data.minZoom, value));
+  }
+
+  private clampOffset(): void {
+    const geometry = this.geometry;
+    if (!geometry) {
+      return;
+    }
+
+    const maxX = Math.max(0, (geometry.imageWidth * this.zoom() - geometry.viewportWidth) / 2);
+    const maxY = Math.max(0, (geometry.imageHeight * this.zoom() - geometry.viewportHeight) / 2);
+
+    this.offsetX.set(Math.min(maxX, Math.max(-maxX, this.offsetX())));
+    this.offsetY.set(Math.min(maxY, Math.max(-maxY, this.offsetY())));
+  }
+
+  private midpoint(first: Point, second: Point): Point {
+    return { x: (first.x + second.x) / 2, y: (first.y + second.y) / 2 };
+  }
+
+  private distance(first: Point, second: Point): number {
+    return Math.hypot(second.x - first.x, second.y - first.y);
+  }
+
+  private isSwipeDown(start: Point | null, end: Point): boolean {
+    if (!start || this.hadMultiplePointers || this.zoom() > this.data.minZoom + 0.01) {
+      return false;
+    }
+
+    const deltaX = Math.abs(end.x - start.x);
+    const deltaY = end.y - start.y;
+    return deltaY >= SWIPE_DISMISS_DISTANCE && deltaY >= deltaX * SWIPE_DIRECTION_RATIO;
+  }
+
+  private resetGesture(): void {
+    this.cancelGestureFrame();
+    this.pointers.clear();
+    this.dragStart = null;
+    this.pointerDownAt = null;
+    this.swipeStart = null;
+    this.hadMultiplePointers = false;
+    this.gestureActive.set(false);
+  }
+
+  private scheduleGestureFrame(): void {
+    if (this.animationFrameId !== null) {
+      return;
+    }
+
+    this.animationFrameId = requestAnimationFrame(() => {
+      this.animationFrameId = null;
+      this.applyPointerMovement();
+    });
+  }
+
+  private flushGestureFrame(): void {
+    if (this.animationFrameId === null) {
+      return;
+    }
+
+    cancelAnimationFrame(this.animationFrameId);
+    this.animationFrameId = null;
+    this.applyPointerMovement();
+  }
+
+  private cancelGestureFrame(): void {
+    if (this.animationFrameId !== null) {
+      cancelAnimationFrame(this.animationFrameId);
+      this.animationFrameId = null;
+    }
+  }
+
+  private applyPointerMovement(): void {
+    if (this.pointers.size === 2) {
+      const [first, second] = [...this.pointers.values()];
+      const geometry = this.geometry;
+      if (!geometry) {
+        return;
+      }
+
+      const distance = this.distance(first, second);
+      const midpoint = this.midpoint(first, second);
+      const nextZoom = this.clampZoom(this.pinchZoom * (distance / this.pinchDistance));
+
+      this.zoom.set(nextZoom);
+      this.offsetX.set(
+        midpoint.x -
+          (geometry.viewportLeft + geometry.viewportWidth / 2) -
+          this.pinchLocal.x * nextZoom,
+      );
+      this.offsetY.set(
+        midpoint.y -
+          (geometry.viewportTop + geometry.viewportHeight / 2) -
+          this.pinchLocal.y * nextZoom,
+      );
+      this.clampOffset();
+      return;
+    }
+
+    if (this.pointers.size !== 1) {
+      return;
+    }
+
+    const point = [...this.pointers.values()][0];
+    if (this.swipeStart) {
+      const deltaX = Math.abs(point.x - this.swipeStart.x);
+      const deltaY = point.y - this.swipeStart.y;
+      this.swipeOffsetY.set(deltaY > 0 && deltaY >= deltaX ? deltaY : 0);
+      return;
+    }
+
+    if (this.dragStart && this.zoom() > this.data.minZoom) {
+      this.offsetX.set(this.dragOffset.x + point.x - this.dragStart.x);
+      this.offsetY.set(this.dragOffset.y + point.y - this.dragStart.y);
+      this.clampOffset();
+    }
+  }
+
+  private refreshGeometry(): ViewerGeometry | null {
+    const viewport = this.viewport().nativeElement;
+    const image = this.image()?.nativeElement;
+    if (!image) {
+      this.geometry = null;
+      return null;
+    }
+
+    const rect = viewport.getBoundingClientRect();
+    this.geometry = {
+      imageHeight: image.offsetHeight,
+      imageWidth: image.offsetWidth,
+      viewportHeight: viewport.clientHeight,
+      viewportLeft: rect.left,
+      viewportTop: rect.top,
+      viewportWidth: viewport.clientWidth,
+    };
+    return this.geometry;
+  }
+}

src/app/shared/components/modal-host/modal-host.component.html

@@ -2,6 +2,7 @@
   <app-modal-shell
     [title]="modal.config.title"
     [size]="modal.config.size"
+    [presentation]="modal.config.presentation ?? 'dialog'"
     [showCloseButton]="modal.config.showCloseButton"
     (backdropClick)="onBackdropClick()"
     (closeRequested)="onCloseRequested()"

src/app/shared/components/modal-host/modal-host.component.spec.ts

@@ -51,6 +51,10 @@ describe('ModalHostComponent', () => {
   afterEach(() => {
     doc.body.style.overflow = '';
     doc.body.style.paddingRight = '';
+    doc.body.style.position = '';
+    doc.body.style.top = '';
+    doc.body.style.left = '';
+    doc.body.style.width = '';
     TestBed.resetTestingModule();
   });
 
@@ -99,6 +103,10 @@ describe('ModalHostComponent', () => {
     expect(service.activeModal()).toBeNull();
     expect(doc.body.style.overflow).toBe('');
     expect(doc.body.style.paddingRight).toBe('');
+    expect(doc.body.style.position).toBe('');
+    expect(doc.body.style.top).toBe('');
+    expect(doc.body.style.left).toBe('');
+    expect(doc.body.style.width).toBe('');
   });
 
   it('closes on backdrop click when enabled', () => {

src/app/shared/components/modal-host/modal-host.component.ts

@@ -55,11 +55,23 @@ export class ModalHostComponent {
       const body = this.document.body;
       const previousOverflow = body.style.overflow;
       const previousPaddingRight = body.style.paddingRight;
+      const previousPosition = body.style.position;
+      const previousTop = body.style.top;
+      const previousLeft = body.style.left;
+      const previousWidth = body.style.width;
       const view = this.document.defaultView;
+      const scrollX = view?.scrollX ?? 0;
+      const scrollY = view?.scrollY ?? 0;
       const scrollbarWidth = view
         ? Math.max(0, view.innerWidth - this.document.documentElement.clientWidth)
         : 0;
 
+      const activeElement = this.document.activeElement;
+
+      if (activeElement instanceof HTMLElement && activeElement !== body) {
+        activeElement.blur();
+      }
+
       if (scrollbarWidth > 0 && view) {
         const currentPaddingRight =
           Number.parseFloat(view.getComputedStyle(body).paddingRight) || 0;
@@ -68,6 +80,47 @@ export class ModalHostComponent {
 
       body.style.overflow = 'hidden';
 
+      const isIos = view
+        ? /iPad|iPhone|iPod/.test(view.navigator.userAgent) ||
+          (view.navigator.platform === 'MacIntel' && view.navigator.maxTouchPoints > 1)
+        : false;
+
+      if (isIos) {
+        body.style.position = 'fixed';
+        body.style.top = `${-scrollY}px`;
+        body.style.left = `${-scrollX}px`;
+        body.style.width = '100%';
+      }
+
+      let viewportFrame: number | undefined;
+      const viewportSyncTimers: number[] = [];
+      const syncVisualViewport = () => {
+        if (!view) {
+          return;
+        }
+
+        if (viewportFrame !== undefined) {
+          view.cancelAnimationFrame(viewportFrame);
+        }
+
+        viewportFrame = view.requestAnimationFrame(() => {
+          viewportFrame = undefined;
+          this.modalShell()?.setVisualViewport(view.visualViewport, view.scrollX, view.scrollY);
+        });
+      };
+
+      view?.visualViewport?.addEventListener('resize', syncVisualViewport);
+      view?.visualViewport?.addEventListener('scroll', syncVisualViewport);
+      view?.addEventListener('orientationchange', syncVisualViewport);
+      syncVisualViewport();
+
+      if (view) {
+        viewportSyncTimers.push(
+          view.setTimeout(syncVisualViewport, 100),
+          view.setTimeout(syncVisualViewport, 300),
+        );
+      }
+
       const onKeyDown = (event: KeyboardEvent) => {
         if (event.key !== 'Escape' || !this.activeModal()?.config.closeOnEscape) {
           return;
@@ -82,8 +135,26 @@ export class ModalHostComponent {
 
       onCleanup(() => {
         this.document.removeEventListener('keydown', onKeyDown);
+        view?.visualViewport?.removeEventListener('resize', syncVisualViewport);
+        view?.visualViewport?.removeEventListener('scroll', syncVisualViewport);
+        view?.removeEventListener('orientationchange', syncVisualViewport);
+
+        if (viewportFrame !== undefined) {
+          view?.cancelAnimationFrame(viewportFrame);
+        }
+
+        viewportSyncTimers.forEach((timer) => view?.clearTimeout(timer));
+
         body.style.overflow = previousOverflow;
         body.style.paddingRight = previousPaddingRight;
+        body.style.position = previousPosition;
+        body.style.top = previousTop;
+        body.style.left = previousLeft;
+        body.style.width = previousWidth;
+
+        if (isIos) {
+          view?.scrollTo(scrollX, scrollY);
+        }
       });
     });
   }

src/app/shared/components/modal-shell/modal-shell.component.html

@@ -1,4 +1,9 @@
-<div class="modal-shell" (click)="backdropClick.emit()">
+<div
+  #shell
+  class="modal-shell"
+  [class.modal-shell--fullscreen-media]="presentation() === 'fullscreen-media'"
+  (click)="backdropClick.emit()"
+>
   <div
     class="modal-dialog modal-dialog-centered modal-dialog-scrollable modal-shell__dialog"
     [ngClass]="dialogClass()"

src/app/shared/components/modal-shell/modal-shell.component.scss

@@ -4,7 +4,10 @@
 
 .modal-shell {
   position: fixed;
-  inset: 0;
+  top: var(--modal-viewport-top, 0);
+  left: var(--modal-viewport-left, 0);
+  width: var(--modal-viewport-width, 100vw);
+  height: var(--modal-viewport-height, 100dvh);
   z-index: 2000;
   display: flex;
   align-items: center;
@@ -109,6 +112,64 @@
   color: #303030;
 }
 
+.modal-shell--fullscreen-media {
+  padding: 1.5rem;
+  background: rgba(0, 0, 0, 0.92);
+}
+
+.modal-shell--fullscreen-media .modal-shell__dialog {
+  width: 100%;
+  max-width: 100%;
+  height: calc(100dvh - 3rem);
+}
+
+.modal-shell--fullscreen-media .modal-shell__content {
+  min-height: 0;
+  height: 100%;
+  max-height: none;
+  overflow: hidden;
+  border-radius: 0.4rem;
+  background: #111111;
+}
+
+.modal-shell--fullscreen-media .modal-shell__header {
+  position: absolute;
+  inset: 0 0 auto;
+  z-index: 2;
+  justify-content: flex-start;
+  height: 0;
+  padding: 0;
+}
+
+.modal-shell--fullscreen-media .modal-shell__title {
+  position: absolute;
+  top: max(1.25rem, env(safe-area-inset-top));
+  left: max(1.25rem, env(safe-area-inset-left));
+  width: auto;
+  max-width: calc(100% - 8rem);
+  overflow: hidden;
+  color: #ffffff;
+  font-size: 1rem;
+  line-height: 1.4;
+  text-align: left;
+  text-overflow: ellipsis;
+  text-shadow: 0 1px 3px #000000;
+  white-space: nowrap;
+}
+
+.modal-shell--fullscreen-media .modal-shell__header .btn-close {
+  top: max(1rem, env(safe-area-inset-top));
+  right: max(1rem, env(safe-area-inset-right));
+  filter: invert(1) grayscale(1) brightness(2) drop-shadow(0 1px 2px #000000);
+}
+
+.modal-shell--fullscreen-media .modal-shell__body {
+  min-height: 0;
+  padding: 0;
+  overflow: hidden;
+  color: #ffffff;
+}
+
 @media (max-width: 576px) {
   .modal-shell {
     padding: 0.75rem;
@@ -128,4 +189,18 @@
     max-height: min(100dvh - 1.5rem, 48rem);
     border-radius: 1.25rem 1.25rem 0.75rem 0.75rem;
   }
+
+  .modal-shell--fullscreen-media {
+    align-items: center;
+    padding: 0;
+  }
+
+  .modal-shell--fullscreen-media .modal-shell__dialog {
+    height: 100dvh;
+  }
+
+  .modal-shell--fullscreen-media .modal-shell__content {
+    max-height: none;
+    border-radius: 0;
+  }
 }

src/app/shared/components/modal-shell/modal-shell.component.ts

@@ -9,7 +9,7 @@ import {
   viewChild,
 } from '@angular/core';
 
-import { ModalSize } from '../../../core/services/modal.service';
+import { ModalPresentation, ModalSize } from '../../../core/services/modal.service';
 
 @Component({
   selector: 'app-modal-shell',
@@ -19,10 +19,12 @@ import { ModalSize } from '../../../core/services/modal.service';
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class ModalShellComponent {
+  private readonly shell = viewChild.required<ElementRef<HTMLElement>>('shell');
   private readonly panel = viewChild.required<ElementRef<HTMLElement>>('panel');
 
   readonly title = input<string | undefined>();
   readonly size = input<ModalSize>('md');
+  readonly presentation = input<ModalPresentation>('dialog');
   readonly showCloseButton = input(true);
 
   readonly backdropClick = output<void>();
@@ -46,6 +48,28 @@ export class ModalShellComponent {
     return this.title() ? this.titleId : null;
   }
 
+  setVisualViewport(viewport: VisualViewport | null, layoutScrollX = 0, layoutScrollY = 0): void {
+    const shell = this.shell().nativeElement;
+
+    if (!viewport) {
+      shell.style.removeProperty('--modal-viewport-top');
+      shell.style.removeProperty('--modal-viewport-left');
+      shell.style.removeProperty('--modal-viewport-width');
+      shell.style.removeProperty('--modal-viewport-height');
+      return;
+    }
+
+    // pageTop/pageLeft are a useful fallback for WebKit versions that update
+    // offsetTop/offsetLeft one frame late after dismissing a native control.
+    const top = Math.max(viewport.offsetTop, viewport.pageTop - layoutScrollY);
+    const left = Math.max(viewport.offsetLeft, viewport.pageLeft - layoutScrollX);
+
+    shell.style.setProperty('--modal-viewport-top', `${top}px`);
+    shell.style.setProperty('--modal-viewport-left', `${left}px`);
+    shell.style.setProperty('--modal-viewport-width', `${viewport.width}px`);
+    shell.style.setProperty('--modal-viewport-height', `${viewport.height}px`);
+  }
+
   focusInitialElement(): void {
     const panel = this.panel().nativeElement;
     const focusTarget = panel.querySelector<HTMLElement>(

src/app/shared/components/product-ticket-selector/product-ticket-selector.component.html

@@ -107,6 +107,17 @@
   </div>
 
   @if (imageUrl(); as image) {
-    <img class="ticket-selector__map" [src]="image" [alt]="'Plano de ubicaciones de ' + title()" />
+    <button
+      type="button"
+      class="ticket-selector__map-button"
+      aria-label="Ampliar plano de ubicaciones"
+      (click)="openImage(image)"
+    >
+      <img
+        class="ticket-selector__map"
+        [src]="image"
+        [alt]="'Plano de ubicaciones de ' + title()"
+      />
+    </button>
   }
 </article>

src/app/shared/components/product-ticket-selector/product-ticket-selector.component.scss

@@ -153,11 +153,27 @@
     margin-top: 0.75rem;
   }
 
-  &__map {
+  &__map-button {
     display: block;
     width: min(100%, 720px);
-    max-height: 680px;
     margin: 3rem auto 0;
+    padding: 0;
+    overflow: hidden;
+    border: 0;
+    border-radius: 0.4rem;
+    background: transparent;
+    cursor: zoom-in;
+
+    &:focus-visible {
+      outline: 3px solid var(--tenant-primary);
+      outline-offset: 0.25rem;
+    }
+  }
+
+  &__map {
+    display: block;
+    width: 100%;
+    max-height: 680px;
     object-fit: contain;
   }
 }
@@ -188,7 +204,7 @@
       display: none;
     }
 
-    &__map {
+    &__map-button {
       margin-top: 2rem;
     }
   }

src/app/shared/components/product-ticket-selector/product-ticket-selector.component.spec.ts

@@ -104,6 +104,10 @@ describe('ProductTicketSelectorComponent', () => {
     };
     catalogService.withoutLoading.mockReturnValue(catalogService);
     cartService.withoutLoading.mockReturnValue(cartService);
+    const modalService = {
+      openConfirmDelete: vi.fn().mockReturnValue(of(true)),
+      openImage: vi.fn(),
+    };
 
     await TestBed.configureTestingModule({
       imports: [ProductTicketSelectorComponent],
@@ -112,7 +116,7 @@ describe('ProductTicketSelectorComponent', () => {
         { provide: CartService, useValue: cartService },
         {
           provide: ModalService,
-          useValue: { openConfirmDelete: vi.fn().mockReturnValue(of(true)) },
+          useValue: modalService,
         },
         { provide: ToastService, useValue: { danger: toastDanger } },
       ],
@@ -125,7 +129,7 @@ describe('ProductTicketSelectorComponent', () => {
     await fixture.whenStable();
     fixture.detectChanges();
 
-    return { fixture, getVariantOptions, cartService, toastDanger };
+    return { fixture, getVariantOptions, cartService, toastDanger, modalService };
   }
 
   it('loads one map, recalculates the cascade locally and reserves only after the last select', async () => {
@@ -226,6 +230,25 @@ describe('ProductTicketSelectorComponent', () => {
     ]);
   });
 
+  it('opens the zoomable image modal when the seating map is clicked', async () => {
+    const { fixture, modalService } = await createComponent({
+      maps: [mapResponse([variant(401, 'general', 'A', '1', '1')])],
+    });
+    fixture.componentRef.setInput('imageUrl', '/images/plano.png');
+    fixture.detectChanges();
+
+    const button = fixture.nativeElement.querySelector(
+      'button[aria-label="Ampliar plano de ubicaciones"]',
+    ) as HTMLButtonElement;
+    button.click();
+
+    expect(modalService.openImage).toHaveBeenCalledWith({
+      title: 'Entrada',
+      src: '/images/plano.png',
+      alt: 'Plano de ubicaciones de Entrada',
+    });
+  });
+
   it('clears only the seat after a stock conflict when the row still has alternatives', async () => {
     const failed = variant(401, 'general', 'A', '1', '1');
     const alternative = variant(402, 'general', 'A', '1', '2');

src/app/shared/components/product-ticket-selector/product-ticket-selector.component.ts

@@ -154,6 +154,14 @@ export class ProductTicketSelectorComponent {
     if (this.hasSelection() && variantIds.length > 0) this.buy.emit(variantIds);
   }
 
+  protected openImage(src: string): void {
+    this.modalService.openImage({
+      title: this.title(),
+      src,
+      alt: `Plano de ubicaciones de ${this.title()}`,
+    });
+  }
+
   protected addRow(): void {
     if (!this.canAddRow()) return;
     const row = this.createRow(this.nextRowId++);

src/app/shared/components/product-vertical-with-cart-card/product-vertical-with-cart-card.component.scss

@@ -17,7 +17,7 @@
   height: 100%;
   box-sizing: border-box;
   padding: 30px 20px;
-  overflow: hidden;
+  overflow: visible;
   background-color: #ffffff;
   border: 1px solid var(--border-color);
   border-radius: 7px;

src/index.html

@@ -1,13 +1,16 @@
 <!doctype html>
 <html lang="es">
-<head>
-  <meta charset="utf-8">
-  <title>ShopitFront</title>
-  <base href="/">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'/%3E">
-</head>
-<body>
-  <app-root></app-root>
-</body>
+  <head>
+    <meta charset="utf-8" />
+    <title>ShopitFront</title>
+    <base href="/" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover"
+    />
+    <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'/%3E" />
+  </head>
+  <body>
+    <app-root></app-root>
+  </body>
 </html>

src/styles.scss

@@ -6,6 +6,15 @@
 
 @import '../node_modules/bootstrap/scss/bootstrap';
 
+html,
+body,
+app-root {
+  width: 100%;
+  min-height: 100%;
+  margin: 0;
+  background: #f5f5f5;
+}
+
 :root,
 app-root {
   --border-color: #dddddd;