/* ==========================================================================
   Shantha Jeeva Jyothi (SJJ) - Documentary Gallery Styles
   Responsive photo grid, filter buttons, and accessible modal lightbox
   ========================================================================== */

/* Filter Navigation */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  align-items: center;
}

.filter-btn {
  background-color: var(--color-surface);
  border: 1px solid var(--color-neutral-300);
  color: var(--color-neutral-800);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--color-neutral-100);
  border-color: var(--color-neutral-600);
}

.filter-btn.active {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #FFFFFF;
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.gallery-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--border-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
}

.gallery-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.gallery-thumb-container {
  position: relative;
  height: 220px;
  background-color: var(--color-neutral-200);
  overflow: hidden;
}

.gallery-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.gallery-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: rgba(26, 51, 38, 0.9);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 2px;
  backdrop-filter: blur(2px);
}

.gallery-live-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: var(--color-accent-warm);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
}

.gallery-info {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.gallery-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-2);
}

.gallery-item-title {
  font-family: var(--font-serif);
  font-size: var(--text-md);
  color: var(--color-primary-dark);
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

.gallery-item-caption {
  font-size: var(--text-xs);
  color: var(--color-neutral-600);
  line-height: 1.5;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Accessible Modal Lightbox
   -------------------------------------------------------------------------- */
.lightbox-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(17, 34, 25, 0.92);
  z-index: 1000;
  padding: var(--space-4);
  overflow-y: auto;
  align-items: center;
  justify-content: center;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  background-color: #FFFFFF;
  border-radius: var(--border-radius);
  max-width: 960px;
  width: 100%;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  position: relative;
  display: flex;
  flex-direction: column;
}

.lightbox-img-wrapper {
  background-color: #0F1A14;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
  max-height: 65vh;
}

.lightbox-main-img {
  max-width: 100%;
  max-height: 65vh;
  object-fit: contain;
}

.lightbox-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: rgba(0, 0, 0, 0.6);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  z-index: 10;
  transition: background-color var(--transition-fast);
}

.lightbox-close-btn:hover {
  background-color: #000000;
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0, 0, 0, 0.5);
  color: #FFFFFF;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 22px;
  z-index: 10;
  transition: background-color var(--transition-fast);
}

.lightbox-nav-btn:hover {
  background-color: rgba(0, 0, 0, 0.85);
}

.lightbox-prev-btn {
  left: 12px;
}

.lightbox-next-btn {
  right: 12px;
}

.lightbox-details {
  padding: var(--space-6);
  background-color: #FFFFFF;
}

.lightbox-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-2);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.lightbox-title {
  font-size: var(--text-xl);
  color: var(--color-primary-dark);
  line-height: 1.25;
}

.lightbox-meta-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent-warm);
  background-color: var(--color-neutral-100);
  border: 1px solid var(--color-neutral-300);
  padding: 4px 10px;
  border-radius: 12px;
  white-space: nowrap;
}

.lightbox-full-caption {
  font-size: var(--text-sm);
  color: var(--color-neutral-800);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.lightbox-footer-notes {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-neutral-600);
  border-top: 1px solid var(--color-neutral-200);
  padding-top: var(--space-3);
}

/* Responsive adjustments */
@media (max-width: 960px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .lightbox-nav-btn {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }
}