/* ============================================
   Gallery page
   ============================================ */

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-12);
}

.filter-btn {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 0.7rem 1.5rem;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-pill);
  background: var(--color-white);
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  font-weight: 600;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* Masonry-like grid using CSS columns for variable heights */
.gallery-grid {
  columns: 3 280px;
  column-gap: var(--space-4);
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--space-4);
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  display: block;
  background: var(--color-gray-100);
  transition: transform var(--duration) var(--ease),
              box-shadow var(--duration) var(--ease);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--duration-slow) var(--ease);
}

.gallery-item:hover img { transform: scale(1.05); }

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(13,13,13,0.7) 100%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-5);
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}

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

.gallery-item-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-white);
  padding: 0.4rem 0.8rem;
  background: rgba(200, 16, 46, 0.85);
  border-radius: var(--radius-sm);
}

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

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 13, 0.95);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.lightbox.is-open {
  display: flex;
  animation: fadeIn 280ms var(--ease);
}

.lightbox-img {
  max-width: 92%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  animation: scaleIn 320ms var(--ease);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  font-size: 1.5rem;
  border: 1px solid rgba(255,255,255,0.2);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.lightbox-close {
  top: var(--space-6);
  right: var(--space-6);
}

.lightbox-prev { left: var(--space-6); }
.lightbox-next { right: var(--space-6); }

@media (max-width: 768px) {
  .lightbox-prev, .lightbox-next { width: 44px; height: 44px; }
}