:root {
  --radius: 14px;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, monospace;
  --serif: "Iowan Old Style", "Apple Garamond", Georgia, serif;

  /* Default to dark; data-theme on <html> overrides */
  --bg: #0b1020;
  --bg-2: #11172d;
  --panel: #161e3b;
  --panel-2: #1d264a;
  --border: #2a3460;
  --ink: #e6ecff;
  --ink-dim: #aeb6d4;
  --ink-faint: #7884a8;
  --accent: #6cd4ff;
  --accent-2: #ff6cb1;
  --accent-3: #ffd166;
  --good: #6dd896;
  --warn: #ffb86b;
  --bad: #ff7b8b;
  --gradient: linear-gradient(135deg, #6cd4ff 0%, #ff6cb1 100%);
  --shadow-1: 0 4px 14px rgba(0,0,0,.25);
  --shadow-2: 0 10px 32px rgba(0,0,0,.4);

  /* Brand colors stay for the gradient hero */
  --brand-cyan: #6cd4ff;
  --brand-pink: #ff6cb1;
  --brand-amber: #ffd166;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7fb;
  --bg-2: #ffffff;
  --panel: #ffffff;
  --panel-2: #eef1fb;
  --border: #d6dbef;
  --ink: #0f1535;
  --ink-dim: #475371;
  --ink-faint: #7c87a3;

  /* Deeper accents that read well on white */
  --accent: #0e7490;     /* cyan-700 */
  --accent-2: #be185d;   /* pink-700 */
  --accent-3: #b45309;   /* amber-700 */
  --good: #15803d;       /* emerald-700 */
  --warn: #c2410c;       /* orange-700 */
  --bad: #be123c;        /* rose-700 */
  --gradient: linear-gradient(135deg, #0e7490 0%, #be185d 100%);
  --shadow-1: 0 2px 8px rgba(15,21,53,.07);
  --shadow-2: 0 8px 24px rgba(15,21,53,.10);
}

/* Visualizations always stay dark — the SVG fills are tuned for dark backgrounds. */
html[data-theme="light"] .viz-frame {
  background: #11172d;
  border-color: #2a3460;
  color: #e6ecff;
}
html[data-theme="light"] .viz-counter {
  background: #161e3b;
  border-color: #2a3460;
}
html[data-theme="light"] .viz-counter .label { color: #7884a8; }
html[data-theme="light"] .viz-counter .value { color: #ff7b8b; }
html[data-theme="light"] .viz-counter .value.calm { color: #6dd896; }
html[data-theme="light"] .viz-controls label {
  background: #161e3b; border-color: #2a3460; color: #aeb6d4;
}
html[data-theme="light"] .viz-controls label.active {
  background: #6cd4ff; color: #0b1020; border-color: #6cd4ff;
}
html[data-theme="light"] .viz-controls .legend { color: #7884a8; }
html[data-theme="light"] .viz-controls input[type="checkbox"] { accent-color: #6cd4ff; }

/* Hero gradient overlay — softer in light mode */
html[data-theme="light"] .hero::before {
  background: radial-gradient(800px 300px at 30% 10%, rgba(14,116,144,.08) 0, transparent 60%),
              radial-gradient(700px 280px at 80% 0%, rgba(190,24,93,.06) 0, transparent 60%);
}
html[data-theme="light"] #heroDna { opacity: .25; }

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============= TOPBAR ============= */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,16,32,.85);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
html[data-theme="light"] .topbar { background: rgba(255,255,255,.9); }

/* Theme toggle */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--ink-dim); cursor: pointer;
  font-size: 16px; line-height: 1;
  transition: background .15s, color .15s, transform .15s;
  user-select: none;
}
.theme-toggle:hover { color: var(--ink); background: var(--panel-2); }
.theme-toggle:active { transform: scale(.94); }
.topbar-inner {
  max-width: 1280px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 24px;
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-weight: 700; font-size: 18px;
  color: var(--ink);
}
.brand .mark {
  display: inline-block; width: 14px; height: 14px;
  border-radius: 4px;
  background: var(--gradient);
}
.brand .sub { font-weight: 400; font-size: 13px; color: var(--ink-faint); }

.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a {
  color: var(--ink-dim); padding: 8px 12px; border-radius: 8px;
  font-size: 14px; font-weight: 500;
}
.nav a:hover { color: var(--ink); background: var(--panel-2); text-decoration: none; }
.nav a.active { color: var(--ink); background: var(--panel-2); }

.search-box {
  position: relative;
}
.search-box input {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--ink); border-radius: 10px; padding: 8px 12px 8px 32px;
  width: 260px; font-size: 13px;
  outline: none;
}
.search-box input:focus { border-color: var(--accent); }
.search-box .icon { position: absolute; left: 10px; top: 9px; color: var(--ink-faint); }
.search-results {
  position: absolute; right: 0; top: 100%; margin-top: 6px;
  width: 380px; max-height: 480px; overflow-y: auto;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 6px; display: none; z-index: 60;
  box-shadow: var(--shadow-2);
}
.search-results.active { display: block; }
.search-results .result {
  padding: 8px 10px; border-radius: 6px; cursor: pointer;
  display: block; color: var(--ink);
}
.search-results .result:hover { background: var(--panel-2); text-decoration: none; }
.search-results .result .label { font-size: 11px; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; }
.search-results .result .title { font-weight: 600; font-size: 14px; margin-top: 2px; }
.search-results .result .snippet { font-size: 12px; color: var(--ink-dim); margin-top: 3px; }

/* ============= LAYOUT ============= */
.container { max-width: 1280px; margin: 0 auto; padding: 32px 24px 80px; }
.container.narrow { max-width: 880px; }

h1 { font-size: 32px; line-height: 1.15; font-weight: 700; margin: 0 0 12px; letter-spacing: -.02em; }
h2 { font-size: 22px; line-height: 1.25; font-weight: 700; margin: 32px 0 14px; }
h3 { font-size: 17px; line-height: 1.3; font-weight: 600; margin: 22px 0 10px; }
.subtitle { color: var(--ink-dim); font-size: 16px; margin: 0 0 24px; max-width: 700px; }

.grid { display: grid; gap: 20px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px;
}
.card.hover { transition: transform .15s, border-color .15s; cursor: pointer; }
.card.hover:hover { transform: translateY(-2px); border-color: var(--accent); }

.kbd {
  font-family: var(--mono); font-size: 12px;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 6px;
}

.tag {
  display: inline-block; font-size: 11px; padding: 3px 10px;
  border-radius: 999px; font-weight: 600;
  background: var(--panel-2); color: var(--ink-dim);
  border: 1px solid var(--border);
  margin: 2px 4px 2px 0;
}
.tag.pharmacokinetic { background: rgba(239,68,68,.15); color: #ff7b8b; border-color: rgba(239,68,68,.3); }
.tag.electrolyte-gate { background: rgba(108,212,255,.15); color: var(--accent); border-color: rgba(108,212,255,.3); }
.tag.neurotransmitter-builder { background: rgba(255,209,102,.15); color: var(--accent-3); border-color: rgba(255,209,102,.3); }
.tag.antidepressant-response { background: rgba(255,108,177,.15); color: var(--accent-2); border-color: rgba(255,108,177,.3); }
.tag.executive-function { background: rgba(109,216,150,.15); color: var(--good); border-color: rgba(109,216,150,.3); }
.tag.addiction { background: rgba(255,184,107,.15); color: var(--warn); border-color: rgba(255,184,107,.3); }
.tag.arousal-anxiety { background: rgba(168,108,255,.15); color: #a86cff; border-color: rgba(168,108,255,.3); }
.tag.hormonal { background: rgba(255,108,177,.15); color: var(--accent-2); border-color: rgba(255,108,177,.3); }
.tag.vascular { background: rgba(255,123,139,.15); color: #ff7b8b; border-color: rgba(255,123,139,.3); }
.tag.gut-detox { background: rgba(255,184,107,.15); color: var(--warn); border-color: rgba(255,184,107,.3); }
.tag.nutrient { background: rgba(255,209,102,.15); color: var(--accent-3); border-color: rgba(255,209,102,.3); }
.tag.antioxidant { background: rgba(109,216,150,.15); color: var(--good); border-color: rgba(109,216,150,.3); }
.tag.immune { background: rgba(168,108,255,.15); color: #a86cff; border-color: rgba(168,108,255,.3); }
.tag.inflammation { background: rgba(239,68,68,.15); color: #ff7b8b; border-color: rgba(239,68,68,.3); }
.tag.endocannabinoid { background: rgba(108,212,255,.15); color: var(--accent); border-color: rgba(108,212,255,.3); }
.tag.transporter { background: rgba(168,108,255,.15); color: #a86cff; border-color: rgba(168,108,255,.3); }

/* ============= HERO ============= */
.hero {
  position: relative; padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(800px 300px at 30% 10%, rgba(108,212,255,.15) 0, transparent 60%),
              radial-gradient(700px 280px at 80% 0%, rgba(255,108,177,.12) 0, transparent 60%);
  z-index: -1;
}
.hero h1 { font-size: 44px; line-height: 1.1; max-width: 800px; }
.hero .subtitle { font-size: 18px; max-width: 660px; }

/* ============= TABLES ============= */
table.data {
  width: 100%; border-collapse: collapse; font-size: 14px;
  background: var(--panel); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border);
}
table.data th, table.data td {
  text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.data thead th {
  background: var(--panel-2); font-size: 12px; text-transform: uppercase;
  letter-spacing: .05em; color: var(--ink-dim); font-weight: 600;
}
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: var(--panel-2); }

/* ============= PILL FILTER ============= */
.pill-filter { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.pill {
  padding: 6px 12px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--ink-dim); font-size: 13px; cursor: pointer;
  user-select: none;
}
.pill:hover { background: var(--panel-2); color: var(--ink); }
.pill.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ============= GENE CARD ============= */
.gene-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; transition: border-color .15s;
}
.gene-card:hover { border-color: var(--accent); }
.gene-card .symbol {
  font-family: var(--mono); font-size: 22px; font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.gene-card .full-name { font-size: 12px; color: var(--ink-dim); margin-top: -4px; }
.gene-card .function { font-size: 14px; color: var(--ink-dim); margin: 12px 0 8px; }
.gene-card .alleles { margin-top: 8px; }
.gene-card .allele { font-size: 13px; padding: 8px 0; border-top: 1px dashed var(--border); }
.gene-card .allele:first-child { border-top: none; }
.gene-card .allele .name { font-family: var(--mono); font-weight: 700; color: var(--ink); }
.gene-card .allele .effect { color: var(--ink-dim); display: block; margin-top: 2px; }

.gene-card details { margin-top: 12px; }
.gene-card summary {
  cursor: pointer; font-size: 13px; color: var(--accent); padding: 4px 0;
  user-select: none;
}
.gene-card .interventions { margin-top: 8px; padding-left: 18px; font-size: 13px; color: var(--ink-dim); }
.gene-card .interventions li { margin: 4px 0; }
.gene-card .clinical-notes {
  margin-top: 8px; font-size: 13px; color: var(--ink-dim);
  padding: 10px; background: var(--panel-2); border-radius: 8px;
  border-left: 3px solid var(--accent-3);
}

/* ============= CASE CARD ============= */
.case-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.case-card .title-row { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.case-card .title-row h3 { margin: 0; font-size: 20px; }
.case-card .meta { color: var(--ink-faint); font-size: 12px; }
.case-card .summary { font-style: italic; color: var(--ink-dim); margin: 8px 0 14px; }
.case-card section { margin: 18px 0; }
.case-card h4 { font-size: 13px; text-transform: uppercase; color: var(--ink-faint); letter-spacing: .07em; margin: 0 0 8px; font-weight: 600; }
.case-card ul { padding-left: 18px; margin: 0; font-size: 14px; color: var(--ink-dim); }
.case-card ul li { margin: 4px 0; }
.case-card .snp-row { display: flex; align-items: baseline; gap: 8px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.case-card .snp-row:last-child { border-bottom: none; }
.case-card .snp-row .gene { font-family: var(--mono); font-weight: 700; color: var(--ink); min-width: 130px; }
.case-card .snp-row .note { color: var(--ink-dim); font-size: 13px; }
.case-card .plan-row { padding: 6px 0; border-bottom: 1px dashed var(--border); }
.case-card .plan-row:last-child { border-bottom: none; }
.case-card .plan-row .intervention { font-weight: 600; color: var(--ink); font-size: 14px; }
.case-card .plan-row .dose { color: var(--accent); font-size: 12px; font-family: var(--mono); margin-left: 8px; }
.case-card .plan-row .rationale { color: var(--ink-dim); font-size: 13px; margin-top: 2px; }
.case-card .outcome {
  background: linear-gradient(135deg, rgba(109,216,150,.1), rgba(108,212,255,.1));
  border: 1px solid rgba(109,216,150,.3); border-left: 3px solid var(--good);
  padding: 14px 16px; border-radius: 8px; font-size: 14px;
}

/* ============= PATHWAY VIZ ============= */
.pathway-svg { width: 100%; height: auto; background: var(--bg-2); border-radius: var(--radius); border: 1px solid var(--border); }
.pathway-node rect, .pathway-node circle { stroke: var(--border); }
.pathway-node text { font-size: 11px; fill: var(--ink); font-family: -apple-system, sans-serif; }
.pathway-edge { stroke: var(--ink-faint); fill: none; }
.pathway-edge-label { font-size: 10px; fill: var(--accent); font-family: var(--mono); }

/* ============= BIG NUMBER STAT ============= */
.stat { padding: 18px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
.stat .value { font-size: 28px; font-weight: 700; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .label { font-size: 13px; color: var(--ink-dim); margin-top: 4px; }

/* ============= CYP CHART ============= */
.cyp-bar { display: flex; align-items: center; gap: 10px; margin: 8px 0; }
.cyp-bar .name { font-family: var(--mono); font-weight: 700; min-width: 90px; }
.cyp-bar .track { flex: 1; height: 24px; background: var(--panel-2); border-radius: 6px; overflow: hidden; position: relative; }
.cyp-bar .fill { height: 100%; border-radius: 6px; }
.cyp-bar .pct { font-size: 12px; color: var(--ink-dim); min-width: 50px; text-align: right; font-family: var(--mono); }

/* ============= DRUG TABLE ============= */
.drug-row { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.drug-row:last-child { border-bottom: none; }
.drug-row .drug { font-weight: 600; color: var(--ink); }
.drug-row .class { font-size: 12px; color: var(--ink-faint); margin-left: 6px; }
.drug-row .note { font-size: 12px; color: var(--ink-dim); margin-top: 2px; }

/* ============= SEARCH HIGHLIGHT ============= */
mark { background: var(--accent-3); color: #1a1300; padding: 0 2px; border-radius: 2px; }

/* ============= UTIL ============= */
.text-dim { color: var(--ink-dim); }
.text-faint { color: var(--ink-faint); }
.text-good { color: var(--good); }
.text-warn { color: var(--warn); }
.text-bad { color: var(--bad); }
.font-mono { font-family: var(--mono); }
.center { text-align: center; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* ============= FOOTER ============= */
.footer {
  border-top: 1px solid var(--border); margin-top: 64px; padding: 32px 0;
  color: var(--ink-faint); font-size: 13px;
}
.footer .container { padding-top: 0; padding-bottom: 0; }

/* ============= PRINT (for reference cards) ============= */
@media print {
  body { background: white; color: black; }
  .topbar, .footer, .pill-filter { display: none; }
  .card, .gene-card, .case-card { box-shadow: none; border: 1px solid #888; break-inside: avoid; page-break-inside: avoid; }
  .container { max-width: 100%; padding: 16px; }
}

/* ============= MERMAID OVERRIDE ============= */
.mermaid svg { max-width: 100%; }

/* Animate flow through Mermaid edges */
.mermaid svg .edgePath path,
.mermaid svg .flowchart-link {
  stroke-dasharray: 8 6;
  animation: flow-dash 1.6s linear infinite;
}
@keyframes flow-dash {
  to { stroke-dashoffset: -28; }
}
.mermaid svg .edgePath path.dashed {
  animation: flow-dash 2.4s linear infinite reverse;
}
.mermaid svg g.node rect,
.mermaid svg g.node polygon,
.mermaid svg g.node circle,
.mermaid svg g.node ellipse {
  transition: filter .3s, transform .3s;
  transform-box: fill-box;
  transform-origin: center;
}
.mermaid svg g.node:hover rect,
.mermaid svg g.node:hover circle,
.mermaid svg g.node:hover polygon,
.mermaid svg g.node:hover ellipse {
  filter: drop-shadow(0 0 12px var(--accent));
}

/* ============= ANIMATED CUSTOM SVG ============= */

/* Flowing arrow path */
.flow-path {
  stroke-dasharray: 6 5;
  animation: flow-dash 1.4s linear infinite;
}
.flow-path.fast { animation-duration: .8s; }
.flow-path.slow { animation-duration: 3s; }
.flow-path.frozen { animation-play-state: paused; }

/* Pulsing node */
.pulse-node {
  animation: node-pulse 2s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes node-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.06); opacity: .92; }
}
.pulse-node.urgent { animation-duration: .9s; }
.pulse-node.danger { animation-duration: .7s; filter: drop-shadow(0 0 6px var(--bad)); }
.pulse-node.calm { animation-duration: 4s; filter: drop-shadow(0 0 6px var(--good)); }

/* Particle traveling along a path (uses SVG <animateMotion>) */

/* Loop counter + interactive controls */
.viz-frame {
  position: relative; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px; overflow: hidden;
}
.viz-frame svg { display: block; width: 100%; height: auto; }
.viz-controls {
  display: flex; gap: 10px; flex-wrap: wrap;
  padding: 12px 0 4px; align-items: center;
}
.viz-controls label {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--ink-dim); cursor: pointer;
  background: var(--panel); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 999px;
  user-select: none;
}
.viz-controls label.active { background: var(--accent); color: #0b1020; border-color: var(--accent); font-weight: 600; }
.viz-controls input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }
.viz-controls .legend { font-size: 12px; color: var(--ink-faint); margin-left: auto; }
.viz-counters {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr));
  gap: 8px; margin-top: 12px;
}
.viz-counter {
  background: var(--panel); border: 1px solid var(--border);
  padding: 10px 12px; border-radius: 8px;
}
.viz-counter .label { font-size: 11px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .06em; }
.viz-counter .value { font-family: var(--mono); font-size: 22px; font-weight: 700; color: var(--bad); transition: color .3s; }
.viz-counter .value.calm { color: var(--good); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .mermaid svg .edgePath path,
  .mermaid svg .flowchart-link,
  .flow-path, .pulse-node {
    animation: none !important;
  }
}

/* ============= GLOSSARY TOOLTIPS ============= */
.gloss {
  border-bottom: 1px dotted var(--accent);
  cursor: help;
  text-decoration: none;
}
.glossary-tooltip {
  position: absolute;
  z-index: 100;
  max-width: 360px;
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.5;
  box-shadow: var(--shadow-2);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .15s, transform .15s;
  pointer-events: auto;
}
.glossary-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}
.glossary-tooltip .t-term {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 4px;
}
.glossary-tooltip .t-exp {
  color: var(--ink-faint);
  font-weight: 400;
  font-size: 12px;
  margin-left: 6px;
}
.glossary-tooltip .t-def {
  color: var(--ink-dim);
}
