:root {
  --bg: #121110;
  --ink: #ECE8E1;
  --muted: #8A8580;
  --gutter: 4px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.site-head {
  padding: 2.5rem 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  position: relative;
}

.site-head-link {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.site-head-link:hover { opacity: 0.8; }

.download-all {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: 1px solid #3a3733;
  color: var(--ink);
  font-size: 0.8rem;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s ease, opacity 0.15s ease;
}

.download-all:hover:not(:disabled) { border-color: var(--muted); }
.download-all:disabled { cursor: default; opacity: 0.6; }

@media (max-width: 560px) {
  .download-all { position: static; transform: none; }
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter) 3rem;
}

/* Masonry via CSS columns — no JS layout math, no reflow jank */
.grid {
  column-count: 2;
  column-gap: var(--gutter);
}

@media (min-width: 640px)  { .grid { column-count: 3; } }
@media (min-width: 960px)  { .grid { column-count: 4; } }
@media (min-width: 1300px) { .grid { column-count: 5; } }

.grid figure {
  margin: 0 0 var(--gutter);
  break-inside: avoid;
  overflow: hidden;
  background: #1c1a18;
}

.grid img {
  display: block;
  width: 100%;
  height: auto;
  cursor: zoom-in;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.grid img.loaded {
  opacity: 1;
}

/* Landing page: grid of gallery folders (not a masonry columns layout —
   fixed cards read better when there are only a handful of galleries) */
.grid--cards {
  column-count: unset;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px)  { .grid--cards { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px)  { .grid--cards { grid-template-columns: repeat(4, 1fr); } }

.gallery-card {
  display: block;
  text-decoration: none;
  color: var(--ink);
  break-inside: auto;
  margin: 0;
}

.gallery-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 3px;
}

.gallery-card-name {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.95rem;
  color: var(--ink);
}

.gallery-card:hover .gallery-card-name {
  color: var(--muted);
}

.empty, .error {
  text-align: center;
  color: var(--muted);
  padding: 4rem 1rem;
}

.error { color: #d98a75; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 9, 8, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.lightbox[hidden] { display: none; }

.lb-image {
  max-width: 92vw;
  max-height: 90vh;
  object-fit: contain;
}

.lb-close, .lb-prev, .lb-next {
  position: absolute;
  background: none;
  border: none;
  color: var(--ink);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.75rem;
  opacity: 0.75;
  transition: opacity 0.15s ease;
}

.lb-close:hover, .lb-prev:hover, .lb-next:hover { opacity: 1; }

.lb-close { top: 0.5rem; right: 0.75rem; font-size: 2.25rem; }
.lb-download { top: 0.5rem; right: 3.75rem; font-size: 1.3rem; }
.lb-prev  { left: 0.5rem; top: 50%; transform: translateY(-50%); }
.lb-next  { right: 0.5rem; top: 50%; transform: translateY(-50%); }

.lb-prev:disabled, .lb-next:disabled, .lb-download:disabled {
  opacity: 0.25;
  cursor: default;
}

.lb-spinner {
  position: absolute;
  width: 28px;
  height: 28px;
  border: 2px solid rgba(236, 232, 225, 0.25);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: lb-spin 0.8s linear infinite;
}

.lb-spinner[hidden] { display: none; }

@keyframes lb-spin {
  to { transform: rotate(360deg); }
}

.lb-error {
  color: #d98a75;
  font-size: 0.9rem;
  max-width: 80vw;
  text-align: center;
}

.lb-error[hidden] { display: none; }

@media (max-width: 600px) {
  .lb-prev, .lb-next { font-size: 2.5rem; padding: 1rem 0.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .grid img, .lb-close, .lb-prev, .lb-next { transition: none; }
}