feat(carousel): enhance carousel layout and control positioning for improved responsiveness

src/app/shared/components/carousel/carousel.component.html

@@ -1,5 +1,9 @@
 <section class="carousel" role="region" [attr.aria-label]="ariaLabel()">
-  <div class="carousel__frame" [style.width.px]="viewportWidth()">
+  <div
+    class="carousel__frame"
+    [class.carousel__frame--with-controls]="hasMultipleItems()"
+    [style.width.px]="frameWidth()"
+  >
     <div
       #viewport
       class="carousel__viewport"

src/app/shared/components/carousel/carousel.component.scss

@@ -8,11 +8,23 @@
 
   &__frame {
     position: relative;
+    display: grid;
+    grid-template-columns: minmax(0, 1fr);
+    align-items: center;
     width: 100%;
     margin-inline: auto;
+
+    &--with-controls {
+      grid-template-columns: 3rem minmax(0, 1fr) 3rem;
+
+      .carousel__viewport {
+        grid-column: 2;
+      }
+    }
   }
 
   &__viewport {
+    grid-row: 1;
     width: 100%;
     overflow-x: auto;
     overscroll-behavior-inline: contain;
@@ -70,19 +82,25 @@
   }
 
   &__control {
-    position: absolute;
+    grid-row: 1;
-    top: 50%;
+    justify-self: center;
     display: grid;
     width: 2.25rem;
     height: 2.25rem;
     padding: 0;
-    color: #fff;
+    color: var(--color-primary, #6376f3);
     cursor: pointer;
-    background: rgb(0 0 0 / 55%);
+    background: transparent;
     border: 0;
-    border-radius: 50%;
     place-items: center;
-    transform: translateY(-50%);
+    transition:
+      color 150ms ease,
+      transform 150ms ease;
+
+    &:hover:not(:disabled) {
+      color: color-mix(in srgb, var(--color-primary, #6376f3) 78%, #000);
+      transform: scale(1.12);
+    }
 
     &:disabled {
       cursor: default;
@@ -96,11 +114,11 @@
     }
 
     &--previous {
-      left: 0.5rem;
+      grid-column: 1;
     }
 
     &--next {
-      right: 0.5rem;
+      grid-column: 3;
     }
   }
 }

src/app/shared/components/carousel/carousel.component.spec.ts

@@ -117,7 +117,7 @@ describe('CarouselComponent', () => {
 
     const frame = fixture.nativeElement.querySelector('.carousel__frame') as HTMLElement;
 
-    expect(frame.style.width).toBe('632px');
+    expect(frame.style.width).toBe('512px');
   });
 
   it('mantiene preparadas las páginas adyacentes y rota al terminar la transición', () => {
@@ -129,7 +129,7 @@ describe('CarouselComponent', () => {
 
     Object.defineProperty(host, 'clientWidth', {
       configurable: true,
-      value: 250,
+      value: 366,
     });
     firstItem.getBoundingClientRect = vi.fn(
       () =>

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

@@ -39,6 +39,8 @@ interface CarouselPage<T> {
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class CarouselComponent<T> implements AfterViewInit {
+  private static readonly CONTROL_SLOT_WIDTH = 48;
+
   private readonly destroyRef = inject(DestroyRef);
   private readonly platformId = inject(PLATFORM_ID);
   private readonly host = inject<ElementRef<HTMLElement>>(ElementRef);
@@ -62,6 +64,13 @@ export class CarouselComponent<T> implements AfterViewInit {
   protected readonly currentPage = signal(0);
   protected readonly transitionDirection = signal<-1 | 0 | 1>(0);
   protected readonly hasMultipleItems = computed(() => this.items().length > 1);
+  protected readonly frameWidth = computed(() => {
+    const viewportWidth = this.viewportWidth();
+
+    return viewportWidth === null
+      ? null
+      : viewportWidth + (this.hasMultipleItems() ? CarouselComponent.CONTROL_SLOT_WIDTH * 2 : 0);
+  });
   protected readonly resolvedGap = computed(() => Math.max(this.gap(), 0));
   protected readonly pageCount = computed(() =>
     Math.max(1, Math.ceil(this.items().length / this.itemsPerPage())),
@@ -219,8 +228,12 @@ export class CarouselComponent<T> implements AfterViewInit {
     const viewport = this.viewport().nativeElement;
     const firstItem = viewport.querySelector<HTMLElement>('.carousel__item');
     const availableWidth = this.host.nativeElement.clientWidth;
+    const availableViewportWidth = Math.max(
+      availableWidth - (this.hasMultipleItems() ? CarouselComponent.CONTROL_SLOT_WIDTH * 2 : 0),
+      0,
+    );
 
-    if (!firstItem || availableWidth <= 0) {
+    if (!firstItem || availableViewportWidth <= 0) {
       this.viewportWidth.set(null);
       this.refreshNavigation();
       return;
@@ -235,7 +248,10 @@ export class CarouselComponent<T> implements AfterViewInit {
     }
 
     const gap = this.resolvedGap();
-    const fittingItems = Math.max(1, Math.floor((availableWidth + gap) / (itemWidth + gap)));
+    const fittingItems = Math.max(
+      1,
+      Math.floor((availableViewportWidth + gap) / (itemWidth + gap)),
+    );
     const visibleItems = Math.min(fittingItems, this.items().length);
     const fittedWidth = visibleItems * itemWidth + Math.max(visibleItems - 1, 0) * gap;
 
@@ -245,7 +261,7 @@ export class CarouselComponent<T> implements AfterViewInit {
       this.transitionDirection.set(0);
     }
 
-    this.viewportWidth.set(Math.min(Math.ceil(fittedWidth), availableWidth));
+    this.viewportWidth.set(Math.min(Math.ceil(fittedWidth), availableViewportWidth));
     if (this.circular()) {
       const hasOverflow = this.items().length > fittingItems;
       this.hasOverflow.set(hasOverflow);