/**
 * A2S — page Réalisations (galerie photos)
 */

.gallery-filters {
  padding-block: var(--space-8);
  border-block: 1px solid var(--color-border);
  background-color: var(--color-bg-dark-elevated);
}

.gallery-filters__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

.gallery-filters .filter-btn {
  padding: var(--space-2) var(--space-5);
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-white);
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast), color var(--transition-fast);
}

.gallery-filters .filter-btn:hover {
  border-color: rgba(25, 180, 184, 0.5);
  color: var(--color-teal);
}

.gallery-filters .filter-btn.is-active {
  background-color: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
}

.gallery {
  padding-block: var(--space-16) var(--space-24);
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.gallery__item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-dark);
  cursor: pointer;
  padding: 0;
  appearance: none;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.gallery__item:hover img,
.gallery__item:focus-visible img {
  transform: scale(1.04);
}

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

.gallery__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-4);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
  font-size: var(--text-xs);
  color: var(--color-white);
  text-align: left;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gallery__item:hover .gallery__caption,
.gallery__item:focus-visible .gallery__caption {
  opacity: 1;
}

.gallery__empty {
  text-align: center;
  padding: var(--space-16);
  color: var(--color-text-muted);
}

.gallery__empty[hidden] {
  display: none;
}

/* Aperçu (page À propos) */
.gallery-preview {
  padding-block: var(--space-16);
}

.gallery-preview__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.gallery-preview__item {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.gallery-preview__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.gallery-preview__item:hover img {
  transform: scale(1.03);
}

.gallery-preview__cta {
  margin-top: var(--space-8);
  text-align: center;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background-color: rgba(0, 0, 0, 0.92);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox__img {
  max-width: min(90vw, 1100px);
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox__caption {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  max-width: 90vw;
  text-align: center;
  color: var(--color-white);
  font-size: var(--text-sm);
}

.lightbox__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-bg-dark);
  color: var(--color-white);
  font-size: var(--text-xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .gallery-preview__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .gallery-preview__grid {
    grid-template-columns: 1fr;
  }

  .gallery__grid {
    grid-template-columns: 1fr;
  }
}