/* ============================================================
   CVRM DEGREE COLLEGE — Gallery Page Styles
   ============================================================ */

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

.filter-btn {
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-glass-border);
  background: transparent;
  color: var(--color-gray);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(201,168,76,0.08);
}

.filter-btn.active {
  background: var(--color-gold);
  color: var(--color-bg);
}

/* Masonry Grid */
.gallery-masonry {
  columns: 3;
  column-gap: var(--space-md);
  padding: 0;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.gallery-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

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

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

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,18,0.8) 100%);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
  display: flex;
  align-items: flex-end;
  padding: var(--space-md);
}

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

.gallery-item-caption {
  color: #ffffff;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
}

/* Video Gallery */
.gallery-videos {
  padding: var(--space-3xl) 0;
}

.gallery-videos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.gallery-video-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-glass-border);
}

.gallery-video-card .video-placeholder {
  border: none;
  border-radius: 0;
}

.gallery-video-info {
  padding: var(--space-md);
}

.gallery-video-info h4 {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) ease;
  cursor: pointer;
}

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

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

.lightbox-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.5);
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) ease;
}

.lightbox-close:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.5);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) ease;
}

.lightbox-nav:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

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

/* Responsive */
@media (max-width: 1024px) {
  .gallery-masonry {
    columns: 2;
  }

  .gallery-videos-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .gallery-masonry {
    columns: 1;
  }

  .gallery-filters {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: var(--fs-caption);
  }
}