:root {
  --bg: #0f1216;
  --bg-raised: #171b21;
  --bg-card: #1c2129;
  --border: #2a3038;
  --text: #e8eaed;
  --text-dim: #9aa2ad;
  --accent: #6bb0e8;
  --accent-2: #e8c05f;
  --radius: 10px;
  --maxw: 1200px;
}

* { box-sizing: border-box; }

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

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: 0.2px;
}

a { color: inherit; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 14px 28px;
  background: rgba(15, 18, 22, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-nav .brand {
  font-family: Georgia, serif;
  font-size: 1.15rem;
  font-weight: 700;
  margin-right: auto;
  white-space: nowrap;
}
.site-nav .brand span { color: var(--accent); }

.site-nav a.navlink {
  font-size: 0.92rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
}
.site-nav a.navlink:hover, .site-nav a.navlink.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.btn-surprise {
  background: linear-gradient(135deg, var(--accent), #8f6bE8);
  color: #0f1216;
  border: none;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
}
.btn-surprise:hover { filter: brightness(1.08); }

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 24px 80px;
}

.page-header {
  margin-bottom: 22px;
}
.page-header h1 {
  font-size: 2rem;
  margin: 0 0 6px;
}
.page-header p {
  color: var(--text-dim);
  max-width: 68ch;
  line-height: 1.5;
  margin: 0;
}

/* controls bar */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 22px;
  padding: 14px 16px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.controls label {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.controls select, .controls input[type="text"] {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 0.85rem;
}
.controls .checklabel {
  flex-direction: row;
  align-items: center;
  gap: 6px;
}
.controls .count {
  margin-left: auto;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* card grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}

.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s ease, border-color 0.12s ease;
  position: relative;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.card .thumb-wrap {
  background: #f7f6f2;
  aspect-ratio: 216 / 188;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.card .meta {
  padding: 8px 10px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
.card .cat-badge {
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  white-space: nowrap;
}
.card .verified-star {
  color: var(--accent-2);
  font-size: 0.75rem;
  title: "human-verified";
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}
.btn-load-more {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 22px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-load-more:hover { border-color: var(--accent); }

/* category chips row */
.cat-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.cat-chip {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  text-decoration: none;
  color: var(--text);
  min-width: 130px;
}
.cat-chip:hover { border-color: var(--accent); }
.cat-chip .n { font-size: 0.72rem; color: var(--text-dim); }
.cat-chip .dot {
  width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 6px;
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 22px 24px 40px;
  color: var(--text-dim);
  font-size: 0.82rem;
  text-align: center;
}
.site-footer a { color: var(--text-dim); text-decoration: underline; }

/* phase map */
#phase-map-wrap {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  overflow: auto;
}
#phase-map-svg { display: block; }
.pm-point {
  cursor: pointer;
}
.pm-point image {
  transition: opacity 0.1s ease;
}
.pm-axis-label {
  fill: var(--text-dim);
  font-size: 12px;
}
.pm-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.78rem;
  color: var(--text);
  display: none;
  z-index: 20;
}

/* detail page */
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  gap: 24px;
  align-items: start;
}
@media (max-width: 860px) {
  .detail-layout { grid-template-columns: 1fr; }
}
#viewer-wrap {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  position: relative;
  overflow: hidden;
}
#viewer-wrap canvas { display: block; width: 100%; height: 100%; }
.viewer-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  left: 10px;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}
.viewer-controls button {
  background: rgba(23,27,33,0.85);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  cursor: pointer;
}
.viewer-controls button.active { border-color: var(--accent); color: var(--accent); }
.viewer-hint {
  position: absolute;
  bottom: 10px;
  left: 12px;
  font-size: 0.72rem;
  color: var(--text-dim);
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.panel-box {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.panel-box h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}
.gauge-row {
  margin-bottom: 12px;
}
.gauge-row:last-child { margin-bottom: 0; }
.gauge-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.gauge-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
.gauge-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
}

.recipe-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
}
.recipe-row:last-child { border-bottom: none; }
.recipe-row .k { color: var(--text-dim); }

.breadcrumbs {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.breadcrumbs a { text-decoration: none; color: var(--text-dim); }
.breadcrumbs a:hover { color: var(--accent); }

.surprise-banner {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 18px;
}

.nav-buttons-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.nav-buttons-row a, .nav-buttons-row button {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.82rem;
  cursor: pointer;
}
.nav-buttons-row a:hover, .nav-buttons-row button:hover { border-color: var(--accent); }

.science-body {
  max-width: 72ch;
  line-height: 1.7;
  color: var(--text);
}
.science-body h2 { margin-top: 2em; }
.science-body p { color: #c7ccd3; }
.citation-box {
  margin-top: 28px;
  padding: 14px 18px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--text-dim);
}

.loading-note {
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 40px 0;
  text-align: center;
}