/* Gallery index (list of tiles) */
.gallery-index .gallery-grid {
  list-style: none;
  padding: 0;
  margin: var(--s-5) 0;
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.gallery-tile { list-style: none; margin: 0; }
.gallery-tile a {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-1);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.gallery-tile a:hover { border-color: var(--border-strong); }
.gallery-tile-img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background-size: cover;
  background-position: center;
}
.gallery-tile-body { padding: var(--s-3) var(--s-4); }
.gallery-tile-title {
  display: block;
  font-weight: 500;
  color: var(--text);
  margin-bottom: var(--s-1);
}
.gallery-tile-meta {
  display: block;
  font-size: var(--fs-caption);
  color: var(--text-muted);
}

/* Individual album: CSS-grid justified layout */
.gallery-page .gallery-header { margin-bottom: var(--s-4); }
.gallery-meta {
  color: var(--text-muted);
  font-size: var(--fs-caption);
  margin: 0;
}
.gallery-intro {
  margin: var(--s-4) 0 var(--s-5);
  color: var(--text-muted);
  max-width: 64ch;
}

.gallery {
  list-style: none;
  padding: 0;
  margin: var(--s-5) 0 var(--s-6);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  grid-auto-rows: 200px;
  gap: 10px;
}
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--surface-1);
  list-style: none;
  margin: 0;
}
.gallery-item--wide { grid-column: span 2; }
.gallery-item--tall { grid-row: span 2; }
.gallery-trigger {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
  outline: none;
}
.gallery-thumb {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background-size: cover;
  background-position: center;
  transition: transform var(--dur-slow) var(--ease);
}
.gallery-trigger:hover .gallery-thumb,
.gallery-trigger:focus-visible .gallery-thumb { transform: scale(1.03); }
.gallery-exif {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--s-2) var(--s-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: #fff;
  background: linear-gradient(to top, rgba(0,0,0,0.75), rgba(0,0,0,0) 100%);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease);
  pointer-events: none;
}
.gallery-trigger:hover .gallery-exif,
.gallery-trigger:focus-visible .gallery-exif { opacity: 1; }
.gallery-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius-lg);
}

/* Lightbox (dialog element) */
.lightbox {
  padding: 0;
  border: none;
  background: rgba(0,0,0,0.85);
  color: #fff;
  max-width: none;
  max-height: none;
  width: 100vw;
  height: 100vh;
}
[data-theme="parchment"] .lightbox { background: rgba(40, 30, 15, 0.85); }
.lightbox::backdrop { background: rgba(0,0,0,0); }
.lightbox-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: var(--s-5);
  gap: var(--s-3);
  box-sizing: border-box;
}
.lightbox-img {
  max-width: 92vw;
  max-height: 80vh;
  border-radius: var(--radius-lg);
  background: #0e0e0e;
  display: block;
}
.lightbox-caption {
  color: #e3e2e0;
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: center;
  max-width: 92vw;
}
.lightbox-caption a {
  color: #e3e2e0;
  text-decoration: underline;
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  font-family: inherit;
  line-height: 1;
}
.lightbox-close { top: var(--s-4); right: var(--s-4); }
.lightbox-prev { left: var(--s-4); top: 50%; transform: translateY(-50%); }
.lightbox-next { right: var(--s-4); top: 50%; transform: translateY(-50%); }
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.2); }
.lightbox-close:focus-visible, .lightbox-prev:focus-visible, .lightbox-next:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Gallery back link */
.gallery-back { margin-top: var(--s-5); }
.gallery-back a { color: var(--text-muted); text-decoration: none; }
.gallery-back a:hover { color: var(--text); text-decoration: underline; }

@media (max-width: 640px) {
  .gallery {
    grid-auto-rows: 140px;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px;
  }
  .gallery-item--wide { grid-column: span 2; }
  .gallery-item--tall { grid-row: span 2; }
  .lightbox-inner { padding: var(--s-3); }
  .lightbox-img { max-width: 96vw; max-height: 70vh; }
  .lightbox-prev { left: var(--s-2); }
  .lightbox-next { right: var(--s-2); }
}