:root {
  color-scheme: dark;
  /* Obsidian Dark (Default) — exact tokens from AuraModels.swift */
  --bg-top: #1C2536;
  --bg-mid: #141B29;
  --bg-bottom: #0E131D;
  --card-bg: rgba(255, 255, 255, 0.045);
  --card-bg-hover: rgba(255, 255, 255, 0.075);
  --card-border: rgba(255, 255, 255, 0.10);
  --text-title: #E5EDF8;
  --text-subtitle: #94A3B8;
  --text-muted: rgba(148, 163, 184, 0.78);
  --node-interior: #131B29;

  /* 5-Color Neon Spectrum */
  --cyan: #56D8FF;
  --violet: #B77BFF;
  --amber: #FFB340;
  --emerald: #34D399;
  --magenta: #FF6B8B;
}

[data-theme="light"] {
  color-scheme: light;
  /* Alabaster Light — exact tokens from AuraModels.swift */
  --bg-top: #F7F5F0;
  --bg-mid: #EEEAE1;
  --bg-bottom: #E4E0D6;
  --card-bg: rgba(0, 0, 0, 0.04);
  --card-bg-hover: rgba(0, 0, 0, 0.065);
  --card-border: rgba(0, 0, 0, 0.10);
  --text-title: #18181B;
  --text-subtitle: #475569;
  --text-muted: rgba(71, 85, 105, 0.80);
  --node-interior: #F8F6F0;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  min-height: 100%;
  background-color: var(--bg-top);
}

body {
  min-height: 100dvh;
  background: transparent;
  color: var(--text-title);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  transition: color 0.28s ease;
}

/* Fixed full-bleed gradient layer (avoids iOS Safari background-attachment: fixed bug) */
body::before {
  content: "";
  position: fixed;
  top: -120px;
  right: 0;
  bottom: -120px;
  left: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 50%, var(--bg-bottom) 100%);
}

#harmonic-rain-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: max(16px, env(safe-area-inset-top)) 22px max(48px, env(safe-area-inset-bottom));
}

/* Top Navigation Bar (mirrors MenuFlowTemplateView) */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 4px;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-subtitle);
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.pill-btn:hover {
  background: var(--card-bg-hover);
  color: var(--text-title);
}

.pill-btn.icon-only {
  width: 40px;
  padding: 0;
  justify-content: center;
}

/* Editorial Header with 5 Neon Spectrum Dots */
.editorial-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 86px;
  padding-bottom: 24px;
}

.spectrum-dots {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 8px;
}

.spectrum-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.spectrum-dot[data-color="cyan"]    { background: var(--cyan);    box-shadow: 0 0 8px rgba(86, 216, 255, 0.8); }
.spectrum-dot[data-color="violet"]  { background: var(--violet);  box-shadow: 0 0 8px rgba(183, 123, 255, 0.8); }
.spectrum-dot[data-color="amber"]   { background: var(--amber);   box-shadow: 0 0 8px rgba(255, 179, 64, 0.8); }
.spectrum-dot[data-color="emerald"] { background: var(--emerald); box-shadow: 0 0 8px rgba(52, 211, 153, 0.8); }
.spectrum-dot[data-color="magenta"] { background: var(--magenta); box-shadow: 0 0 8px rgba(255, 107, 139, 0.8); }

.editorial-title {
  font-size: 31px;
  font-weight: 300;
  letter-spacing: 9px;
  padding-left: 9px;
  color: var(--text-title);
  line-height: 1.2;
}

.editorial-subtitle {
  margin-top: 6px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2.2px;
  padding-left: 2.2px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 14px;
}

.card-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.accent-cyan    { color: var(--cyan); }
.accent-violet  { color: var(--violet); }
.accent-amber   { color: var(--amber); }
.accent-emerald { color: var(--emerald); }
.accent-magenta { color: var(--magenta); }

.card h2 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 8px;
}

.card h3 {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-title);
  margin: 16px 0 6px;
}

.card p, .card li {
  font-size: 14px;
  color: var(--text-subtitle);
}

.card p + p {
  margin-top: 10px;
}

.card ul, .card ol {
  margin: 8px 0 0 18px;
}

.card li + li {
  margin-top: 6px;
}

.card a {
  color: var(--cyan);
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

[data-theme="light"] .card a {
  color: #0284C7;
}

/* Grid Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.feature-grid .card {
  margin-bottom: 0;
  padding: 16px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 12px;
  background: var(--cyan);
  color: #0B111C;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-title);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.cta-secondary:hover {
  background: var(--card-bg-hover);
}

/* Meta bar on legal pages */
.meta-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
  padding: 0 4px;
}

.meta-grid strong {
  color: var(--text-subtitle);
  font-weight: 600;
}

/* Footer */
.site-footer {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--card-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--text-subtitle);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text-title);
  text-decoration: underline;
}

@media (max-width: 560px) {
  .editorial-header {
    padding-top: 64px;
  }
  .editorial-title {
    font-size: 27px;
    letter-spacing: 7px;
    padding-left: 7px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* Interactive Gameplay Demo Card */
.demo-card {
  padding: 20px;
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.demo-telemetry {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-subtitle);
  text-align: center;
  margin-bottom: 14px;
  min-height: 18px;
  transition: color 0.2s ease;
}

.demo-telemetry.error {
  color: #FF2A55;
}

.demo-telemetry.solved {
  color: var(--emerald);
}

.demo-board-wrap {
  position: relative;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.demo-grid-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(circle at center, #000 58%, transparent 100%);
  mask-image: radial-gradient(circle at center, #000 58%, transparent 100%);
}

.demo-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.demo-cells {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
}

.demo-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.demo-cell-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.30);
  pointer-events: none;
}

[data-theme="light"] .demo-cell-dot {
  background: rgba(38, 51, 77, 0.26);
}

.demo-beacon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--node-interior);
  border: 2.5px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12.5px;
  font-weight: 700;
  z-index: 2;
  pointer-events: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.demo-star {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #FFFFFF;
  z-index: 2;
  pointer-events: none;
  transition: transform 0.2s ease;
}

.demo-star.absorbed {
  transform: scale(1.25);
}

.demo-violation {
  position: absolute;
  inset: 3px;
  border-radius: 8px;
  border: 1.5px solid #FF2A55;
  background: rgba(255, 42, 85, 0.14);
  pointer-events: none;
  z-index: 1;
}

.demo-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.demo-btn {
  height: 32px;
  padding: 0 13px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-subtitle);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.demo-btn:hover {
  background: var(--card-bg-hover);
  color: var(--text-title);
}