/* ════════════════════════════════════════
   GALERÍA — cinta horizontal automática (js/gallery.js)
════════════════════════════════════════ */

.gallery {
  background-color: var(--color-surface-alt);
  overflow: hidden;
}

.gallery__header {
  margin-bottom: var(--space-md);
}

.gallery__header .section-title {
  margin-bottom: 0;
  text-align: left;
}

/* ── Cinta (se mueve sola; solo se detiene fuera de pantalla o con el lightbox abierto) ── */
.gallery__viewport {
  overflow: hidden;
}

.gallery__track {
  display: flex;
  gap: var(--space-sm);
  width: max-content;
  padding-block: var(--space-xs);
  animation: galeriaCinta var(--galeria-duracion, 70s) linear infinite;
}

/* La lista va duplicada (clones aria-hidden): -50% deja la cinta en el mismo punto */
@keyframes galeriaCinta {
  to { transform: translateX(calc(-50% - var(--space-sm) / 2)); }
}

.gallery__viewport.is-pausado .gallery__track,
.gallery__viewport.is-fuera .gallery__track {
  animation-play-state: paused;
}

/* ── Item ── */
.gallery__item {
  position: relative;
  display: block;
  flex-shrink: 0;
  width: clamp(240px, 70vw, 380px);
  aspect-ratio: 4 / 3;
  padding: 0;
  overflow: hidden;
  border: none;
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  cursor: zoom-in;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
}

.gallery__item:hover img,
.gallery__item:focus-visible img {
  transform: scale(1.05);
}

.gallery__item:focus-visible {
  outline-offset: -4px;
  outline-color: var(--color-surface);
}

.gallery__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-on-dark);
  background-color: var(--color-overlay-clear);
  transition: background-color var(--transition-base);
}

.gallery__item:hover .gallery__overlay,
.gallery__item:focus-visible .gallery__overlay {
  background-color: var(--color-overlay-soft);
}

.gallery__overlay svg {
  opacity: 0;
  transform: scale(0.75);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.gallery__item:hover .gallery__overlay svg,
.gallery__item:focus-visible .gallery__overlay svg {
  opacity: 1;
  transform: scale(1);
}

/* Sin movimiento: fila con scroll manual y snap (sin clones) */
@media (prefers-reduced-motion: reduce) {
  .gallery__viewport {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-inline: var(--container-padding);
  }

  .gallery__track {
    animation: none;
  }

  .gallery__item {
    scroll-snap-align: start;
  }
}

/* ── Video del recorrido (carga solo al darle play) ── */
.gallery__video {
  max-width: 960px;
  margin-top: var(--space-lg);
}

.gallery__video video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover; /* el póster es 4:3: que cubra el cuadro sin bandas */
  border-radius: var(--radius-lg);
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.gallery__video figcaption {
  margin-top: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

/* ════════════════════════════════════════
   LIGHTBOX
════════════════════════════════════════ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background-color: var(--color-backdrop);
}

.lightbox__figure {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.lightbox__caption {
  font-size: var(--text-sm);
  color: var(--color-text-on-dark-muted);
  text-align: center;
}

/* ── Controles ── */
.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: fixed;
  z-index: 2;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-on-dark-border);
  background-color: var(--color-on-dark-hover);
  color: var(--color-text-on-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background-color: var(--color-on-dark-line);
  border-color: var(--color-text-on-dark);
}

.lightbox :focus-visible {
  outline-color: var(--color-text-on-dark);
}

.lightbox__close {
  top: 16px;
  right: 16px;
}

.lightbox__prev {
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__next {
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__prev:disabled,
.lightbox__next:disabled {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}

@media (min-width: 768px) {
  .lightbox__prev { left: 24px; }
  .lightbox__next { right: 24px; }
}