/* MR4 — Gallery Page Styles */

.gallery-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.gallery-filter {
  padding: 0.5rem 1.25rem;
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-600);
  background: var(--color-bg-alt);
  border: 2px solid transparent;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.gallery-filter:hover {
  color: var(--color-amber);
  border-color: var(--color-amber);
}

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

.gallery-grid {
  columns: 3;
  column-gap: var(--space-md);
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition-base);
}

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

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

.gallery-item__image {
  width: 100%;
  display: block;
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.gallery-item__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: var(--color-white);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.gallery-item__title {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.gallery-item__category {
  font-size: var(--font-size-xs);
  color: var(--color-amber);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 5000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.lightbox__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  z-index: 5001;
  padding: var(--space-sm);
}

.lightbox__image {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  padding: var(--space-md);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.3);
}

.lightbox__prev { left: var(--space-lg); }
.lightbox__next { right: var(--space-lg); }

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

@media (max-width: 1024px) {
  .gallery-grid {
    columns: 2;
  }
}

@media (max-width: 600px) {
  .gallery-grid {
    columns: 1;
  }
}