/* v2.3.0: Gallery Section (multiple layout modes) */
.gallery-section {
  background: var(--bg-alt);
}

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.gallery-filter {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 50px;
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.gallery-filter:hover {
  border-color: var(--green-300);
  color: var(--primary);
}

.gallery-filter.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ── Shared gallery item styles ─────────────────── */
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: pointer;
  content-visibility: auto;
  contain-intrinsic-size: auto 250px;
  contain: layout style paint;
}

.gallery-item.gallery-hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  will-change: auto;
}

.gallery-item:hover img {
  transform: scale(1.08);
  will-change: transform;
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-title {
  color: white;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.3;
}

.gallery-caption {
  color: rgba(255,255,255,0.8);
  font-size: 0.8125rem;
  margin-top: 2px;
}

/* ══════════════════════════════════════════════════
   LAYOUT: Grid (default)
   ══════════════════════════════════════════════════ */
.gallery-grid,
.gallery-grid.gallery-layout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.gallery-layout-grid .gallery-item {
  aspect-ratio: 4 / 3;
}

/* Column overrides for grid layout */
.gallery-layout-grid[data-columns="2"] {
  grid-template-columns: repeat(2, 1fr);
}
.gallery-layout-grid[data-columns="3"] {
  grid-template-columns: repeat(3, 1fr);
}
.gallery-layout-grid[data-columns="4"] {
  grid-template-columns: repeat(4, 1fr);
}
.gallery-layout-grid[data-columns="5"] {
  grid-template-columns: repeat(5, 1fr);
}

/* ══════════════════════════════════════════════════
   LAYOUT: Masonry
   CSS columns-based masonry (no JS needed)
   ══════════════════════════════════════════════════ */
.gallery-grid.gallery-layout-masonry {
  display: block;
  columns: 3;
  column-gap: 16px;
}

.gallery-layout-masonry .gallery-item {
  break-inside: avoid;
  margin-bottom: 16px;
  aspect-ratio: auto;
}

.gallery-layout-masonry .gallery-item img {
  height: auto;
}

/* Column overrides for masonry */
.gallery-layout-masonry[data-columns="2"] { columns: 2; }
.gallery-layout-masonry[data-columns="3"] { columns: 3; }
.gallery-layout-masonry[data-columns="4"] { columns: 4; }
.gallery-layout-masonry[data-columns="5"] { columns: 5; }

/* ══════════════════════════════════════════════════
   LAYOUT: Carousel (horizontal slider)
   ══════════════════════════════════════════════════ */
.gallery-grid.gallery-layout-carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  gap: 16px;
  padding-bottom: var(--space-sm);
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.gallery-layout-carousel::-webkit-scrollbar {
  display: none;
}

.gallery-layout-carousel .gallery-item {
  flex: 0 0 auto;
  width: 320px;
  aspect-ratio: 4 / 3;
  scroll-snap-align: start;
}

/* Carousel navigation buttons */
.gallery-carousel-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.gallery-carousel-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition);
  opacity: 1;
}

.gallery-carousel-btn.carousel-btn-dim {
  opacity: 0.3;
}

.gallery-carousel-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ══════════════════════════════════════════════════
   LAYOUT: Spotlight (1 large + thumbnails)
   ══════════════════════════════════════════════════ */
.gallery-grid.gallery-layout-spotlight {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.gallery-spotlight-main {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
}

.gallery-spotlight-main .gallery-overlay {
  opacity: 1;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
}

.gallery-spotlight-main .gallery-title {
  font-size: 1.25rem;
}

.gallery-spotlight-main .gallery-caption {
  font-size: 0.9375rem;
}

.gallery-spotlight-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.gallery-spotlight-thumb {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  border: 3px solid transparent;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.gallery-spotlight-thumb:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════════════════
   Responsive overrides
   ══════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .gallery-layout-masonry {
    columns: 2;
  }
  .gallery-layout-masonry[data-columns="4"],
  .gallery-layout-masonry[data-columns="5"] {
    columns: 2;
  }

  .gallery-layout-grid[data-columns="4"],
  .gallery-layout-grid[data-columns="5"] {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-layout-carousel .gallery-item {
    width: 260px;
  }

  .gallery-spotlight-thumbs {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}

@media (max-width: 480px) {
  .gallery-layout-masonry {
    columns: 1;
  }

  .gallery-layout-grid,
  .gallery-layout-grid[data-columns="2"],
  .gallery-layout-grid[data-columns="3"],
  .gallery-layout-grid[data-columns="4"],
  .gallery-layout-grid[data-columns="5"] {
    grid-template-columns: 1fr;
  }

  .gallery-layout-carousel .gallery-item {
    width: 85vw;
  }

  .gallery-spotlight-thumbs {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
}