/**
 * USINE - Galerie photo et lecteur video
 * Grille de photos, lightbox avec swipe, lecteur video responsive.
 */

/* === Grille de galerie === */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-sm);
  padding: var(--space-md);
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.gallery-item:hover {
  transform: scale(1.02);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-item__count {
  position: absolute;
  bottom: var(--space-xs);
  right: var(--space-xs);
  background: var(--color-bg-overlay);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
}

/* === Lightbox (plein ecran) === */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  padding-top: calc(var(--space-md) + var(--safe-area-top));
  color: var(--color-text-inverse);
}

.lightbox__counter {
  font-size: var(--font-size-sm);
  /* WCAG 1.4.3 : contraste minimum 4.5:1 - 0.92 sur fond sombre = ratio suffisant */
  color: rgba(255, 255, 255, 0.92);
}

.lightbox__close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.1);
}

.lightbox__close:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Zone d'image swipeable */
.lightbox__viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: pan-y pinch-zoom;
}

.lightbox__image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

/* Navigation */
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.lightbox__nav:hover {
  background: rgba(0, 0, 0, 0.7);
}

.lightbox__nav:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.lightbox__nav--prev { left: var(--space-md); }
.lightbox__nav--next { right: var(--space-md); }

.lightbox__caption {
  padding: var(--space-md);
  padding-bottom: calc(var(--space-md) + var(--safe-area-bottom));
  text-align: center;
  /* WCAG 1.4.3 : contraste minimum 4.5:1 */
  color: rgba(255, 255, 255, 0.92);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

/* Indicateurs de position (dots) */
.lightbox__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
}

.lightbox__dot {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.lightbox__dot.is-active {
  background: var(--color-secondary);
}

/* === Lecteur video === */
.video-player {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--space-md);
}

.video-player video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.video-player__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.video-player__overlay.is-playing {
  opacity: 0;
  pointer-events: none;
}

.video-player__play-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  color: var(--color-primary-dark);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
}