/* Shared gallery primitives */

.gallery-section-title {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--txt-md-plus);
  font-weight: var(--txt-w-medium);
  color: var(--text-muted, var(--clr-muted));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1.5rem 0 0.6rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border, var(--clr-border));
}

.gallery-grid {
  --gallery-gap: 0.6rem;
  --gallery-tile-h: clamp(120px, 16vw, 188px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  grid-auto-rows: var(--gallery-tile-h);
  grid-auto-flow: dense;
  gap: var(--gallery-gap);
  margin-bottom: 1rem;
}

.gallery-panel-grid {
  --gallery-gap: 0.5rem;
  --gallery-tile-h: clamp(112px, 13vw, 172px);
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--gallery-gap);
  margin-bottom: 0;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius, 8px);
  border: 1px solid var(--border, var(--clr-border));
  cursor: pointer;
  height: 100%;
  min-height: 0;
  background: var(--bg-tertiary, var(--clr-chart-bg));
  transition: border-color 0.2s, box-shadow 0.2s;
}

.gallery-item--wide {
  grid-column: span 2;
}

.gallery-item--tall {
  grid-row: span 2;
}

.gallery-item:hover {
  border-color: var(--accent, var(--clr-primary));
  box-shadow: 0 0 0 1px var(--accent, var(--clr-primary));
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s, opacity 0.2s;
  opacity: 0.85;
}

.gallery-item:hover img {
  transform: scale(1.05);
  opacity: 1;
}

.gallery-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.4rem 0.6rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  opacity: 0;
  transition: opacity 0.2s;
}

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

.gallery-item-overlay span {
  font-size: var(--txt-xs);
  color: #fff;
  line-height: var(--txt-lh-tight);
}

.lightbox {
  display: none;
  position: fixed;
  z-index: 2000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.74);
  backdrop-filter: blur(2px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  cursor: pointer;
}

.lightbox.active {
  display: flex;
}

.lightbox-stage {
  position: relative;
}

.lightbox-close:hover,
.lightbox-nav:hover {
  color: var(--text-primary, var(--clr-text));
}

.lightbox-content {
  display: block;
  transition: opacity 0.18s ease;
}

.lightbox.is-loading .lightbox-content {
  opacity: 0;
  transition: none;
}

.lightbox-caption {
  text-align: center;
  color: rgba(245, 249, 255, 0.96);
  font-size: var(--txt-md);
  margin-top: 0.8rem;
  max-width: 600px;
  line-height: var(--txt-lh-body);
  padding: 0 0.5rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.62);
}

.lightbox-caption small {
  color: rgba(219, 229, 243, 0.95);
  font-size: var(--txt-xs);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2001;
}

.lightbox-prev {
  left: 10px;
}

.lightbox-next {
  right: 10px;
}

.lightbox-counter {
  position: static;
  margin-top: 0.35rem;
  color: rgba(210, 223, 240, 0.95);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--txt-xs);
  letter-spacing: 0.05em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.58);
}

@media screen and (max-width: 768px) {
  .gallery-grid {
    --gallery-gap: 0.4rem;
    --gallery-tile-h: clamp(96px, 30vw, 138px);
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--gallery-gap);
  }

  .gallery-panel-grid {
    --gallery-gap: 0.4rem;
    --gallery-tile-h: clamp(92px, 28vw, 128px);
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .lightbox-nav {
    width: 30px;
    height: 30px;
  }

  .lightbox-next {
    right: 6px;
  }

  .lightbox-prev {
    left: 6px;
  }

  .gallery-item--wide {
    grid-column: span 1;
    height: var(--gallery-tile-h);
  }

  .gallery-item--tall {
    grid-row: span 2;
  }
}

@media screen and (max-width: 400px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.3rem;
  }

  .gallery-panel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item--tall {
    grid-row: span 1;
  }
}