/* Showcase — carrusel infinito horizontal con proximity scaling. */

.showcase {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow: hidden;
  background: transparent;
  padding: clamp(1rem, 2.5vh, 2rem) 0 clamp(1.5rem, 3vh, 2.5rem);
}

/* Carrusel viewport.
   overflow-x: clip / overflow-y: visible: el track se recorta horizontalmente
   pero las sombras pueden extenderse verticalmente. `clip` evita crear un
   nuevo scroll context, necesario para que overflow-y: visible funcione. */
.showcase__carousel {
  position: relative;
  width: 100%;
  min-height: clamp(440px, 50vw, 720px);
  display: flex;
  align-items: center;
  overflow-x: clip;
  overflow-y: visible;

  -webkit-mask-image: linear-gradient(
    90deg, transparent 0, #000 5%, #000 95%, transparent 100%
  );
          mask-image: linear-gradient(
    90deg, transparent 0, #000 5%, #000 95%, transparent 100%
  );
  transition: -webkit-mask-image 300ms var(--ease-soft),
              mask-image 300ms var(--ease-soft);
}

.showcase__carousel:has(.showcase__card.is-expanded) {
  -webkit-mask-image: none;
          mask-image: none;
}

.showcase__track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  will-change: transform;
}

/* Card outer: state-scale (hover, expanded) con overshoot. Su transform
   sobrevive cuando el inner cambia su proximity-scale cada frame. */
.showcase__card {
  flex: 0 0 auto;
  width: clamp(300px, 32vw, 560px);
  aspect-ratio: 16 / 9;
  cursor: pointer;
  position: relative;
  border-radius: 18px;

  --state-scale: 1;
  transform: scale(var(--state-scale));
  transition: transform 480ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.showcase__card:hover {
  --state-scale: 1.06;
}

.showcase__card.is-expanded {
  --state-scale: 1.65;
  cursor: zoom-out;
  z-index: 200 !important;
}

.showcase__card:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 6px;
}

/* Card inner: proximity-scale (snap, sin transición). JS lo actualiza
   cada frame según la distancia al centro del viewport. */
.showcase__card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface-2);

  --proximity-scale: 1;
  --proximity: 0;
  transform: scale(var(--proximity-scale));
  transform-origin: center center;
  box-shadow:
    0 calc(6px + var(--proximity) * 18px) calc(16px + var(--proximity) * 32px)
    rgba(0, 0, 0, calc(0.16 + var(--proximity) * 0.18));
}

.showcase__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  user-select: none;
}

/* Glow sutil cuando la card está cerca del centro */
.showcase__card-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, calc(var(--proximity) * 0.22)),
    inset 0 calc(var(--proximity) * 24px) calc(var(--proximity) * 60px) -10px
      rgba(255, 255, 255, calc(var(--proximity) * 0.12));
}

/* Cuando hay una expandida, las demás se atenúan */
.showcase__track:has(.showcase__card.is-expanded) .showcase__card:not(.is-expanded) .showcase__card-inner {
  opacity: 0.32;
  filter: blur(3px);
  transition: opacity 320ms var(--ease-soft), filter 320ms var(--ease-soft);
}

/* Responsive */
@media (max-width: 880px) {
  .showcase__card {
    width: clamp(240px, 70vw, 360px);
  }
  .showcase__card.is-expanded {
    --state-scale: 1.18;
  }
  .showcase__carousel {
    min-height: clamp(360px, 60vw, 520px);
  }
}

@media (max-width: 480px) {
  .showcase__track { gap: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .showcase__card { transition: none; }
}