:root {
  --background: #f3f4f6;
  --surface: #ffffff;
  --tile: #e8eaed;
  --ink: #15171a;
  --muted: #5b616a;
  --faint: #8a9099;
  --accent: #0b7a5c;
  --accent-ink: #ffffff;
  --focus: #2f6fdb;
  --danger: #c2372b;
  --radius: 10px;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --background: #101113;
    --surface: #18191c;
    --tile: #2a2c30;
    --ink: #ececee;
    --muted: #a3a8b0;
    --faint: #737982;
    --accent: #3fc79c;
    --accent-ink: #06261c;
    --focus: #7aa7ff;
    --danger: #ff7a6b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.45;
}

a { color: inherit; }

svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.top {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 24px 8px;
  max-width: 1440px;
  margin: 0 auto;
  user-select: none;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  white-space: nowrap;
}

.summary {
  margin: 0;
  color: var(--muted);
  flex: 1;
  min-width: 0;
}

.summary strong { color: var(--accent); font-weight: 600; white-space: nowrap; }

.dataset-link {
  margin-left: auto;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

.dataset-link:hover { color: var(--ink); }

.browse, .detail {
  max-width: 1440px;
  margin: 0 auto;
  padding: 8px 24px 24px;
}

.filters {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0 16px;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--background);
  user-select: none;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 420px;
  height: 40px;
  padding: 0 12px;
  background: var(--surface);
  border-radius: var(--radius);
  color: var(--faint);
}

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
}

.search:focus-within { outline: 2px solid var(--focus); outline-offset: 0; }

select {
  height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  max-width: 220px;
}

.count {
  color: var(--faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 12px;
}

.tile a {
  display: block;
  text-decoration: none;
  border-radius: var(--radius);
  user-select: none;
}

.tile .thumb {
  width: 100%;
  aspect-ratio: 1;
  background-color: var(--tile);
  background-size: 1000% 1000%;
  background-repeat: no-repeat;
  border-radius: var(--radius);
  transition: transform 160ms cubic-bezier(0.2, 0, 0, 1);
}

@media (hover: hover) {
  .tile a:hover .thumb { transform: scale(1.03); }
}

.tile-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px 2px 0;
  font-size: 12px;
}

.tile-name {
  font-family: var(--mono);
  overflow-wrap: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tile-size {
  color: var(--faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sentinel { height: 1px; }

.empty { color: var(--muted); padding: 48px 0; text-align: center; }

.back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 10px 8px 4px;
  margin-bottom: 8px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 8px;
  user-select: none;
}

.back:hover { color: var(--ink); background: var(--tile); }

.detail-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 24px;
  align-items: start;
}

.stage {
  position: relative;
  aspect-ratio: 4 / 3;
  max-height: calc(100vh - 140px);
  width: 100%;
  border-radius: 14px;
  background: radial-gradient(ellipse at 50% 40%, var(--surface), var(--tile));
  overflow: hidden;
}

.stage canvas { display: block; width: 100%; height: 100%; touch-action: none; }

.stage-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

.stage-status.failed { color: var(--danger); }

.stage-hint {
  position: absolute;
  left: 16px;
  bottom: 12px;
  margin: 0;
  font-size: 12px;
  color: var(--faint);
  pointer-events: none;
  user-select: none;
}

.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--faint);
  border-top-color: transparent;
  animation: spin 800ms linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; }
  .tile .thumb { transition: none; }
}

.facts { user-select: none; }

.asset-name {
  margin: 0;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 500;
  overflow-wrap: break-word;
  user-select: text;
}

.asset-category { margin: 4px 0 20px; color: var(--muted); }

.ratio {
  display: flex;
  flex-direction: column;
  padding: 16px;
  margin-bottom: 16px;
  background: var(--surface);
  border-radius: var(--radius);
}

.ratio-value {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.ratio-label { color: var(--muted); }

.stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 16px;
  margin: 0 0 20px;
  padding: 16px;
  background: var(--surface);
  border-radius: var(--radius);
}

.stats dt { color: var(--muted); }

.stats dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.stats .before { color: var(--faint); }

.actions { display: flex; flex-direction: column; gap: 8px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: var(--radius);
  background: var(--tile);
  color: var(--ink);
  font: inherit;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
}

.button:hover { filter: brightness(0.96); }

.button.primary { background: var(--accent); color: var(--accent-ink); }

.source-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
}

.credit {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
  color: var(--faint);
  font-size: 13px;
}

@media (max-width: 860px) {
  .detail-body { grid-template-columns: 1fr; }
  .stage { aspect-ratio: 1; }
}

@media (max-width: 600px) {
  .top { flex-wrap: wrap; padding: 16px 16px 4px; gap: 4px 12px; }
  .summary { order: 3; flex-basis: 100%; }
  .browse, .detail { padding: 8px 16px 16px; }
  .filters { flex-wrap: wrap; gap: 8px; }
  .search { flex: 1 1 100%; }
  select { flex: 1; max-width: none; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
  .credit { padding: 16px; }
}

.parts {
  margin: 0 0 20px;
  padding: 12px 16px 16px;
  background: var(--surface);
  border-radius: var(--radius);
}

.parts-head { display: flex; align-items: center; gap: 4px; margin-bottom: 8px; }

.parts-head h2 { flex: 1; margin: 0; font-size: 15px; font-weight: 600; }

.quiet {
  height: 30px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.quiet:hover { color: var(--ink); background: var(--tile); }

.part-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 320px;
  margin: 0 -4px;
  padding: 0 8px 0 4px;
  overflow-y: auto;
  scrollbar-gutter: stable;
  list-style: none;
}

.part label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
  font-size: 13px;
}

.part output { color: var(--muted); font-variant-numeric: tabular-nums; }

.part input { width: 100%; margin: 0; accent-color: var(--accent); }

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 14px;
  border: 0;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  white-space: nowrap;
  cursor: pointer;
}

.toggle svg { width: 16px; height: 16px; color: var(--muted); }

.toggle:hover { filter: brightness(0.97); }

.toggle[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.toggle[aria-pressed="true"] svg { color: var(--accent-ink); }