/* TraitMech site styles. Minimal, content-first. */
:root {
  --fg: #1a1a1a;
  --muted: #5b6470;
  --border: #E0E0E4;
  --bg: #fafafa;
  --card-bg: #fff;
  --accent: #C5474B;
  --accent-soft: #F7CDCD;
  --code-bg: #f4f6f8;
}
* { box-sizing: border-box; }
html { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
       color: var(--fg); background: var(--bg); line-height: 1.5; }
body { margin: 0; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 1rem 1.5rem; }

.site-header { background: #fff; border-bottom: 1px solid var(--border); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1.5rem; }
.brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--fg); }
.site-header nav a { margin-left: 1.25rem; text-decoration: none; color: var(--muted); }
.site-header nav a:hover { color: var(--accent); }

.site-footer { border-top: 1px solid var(--border); margin-top: 4rem; padding: 1.5rem 0; color: var(--muted); font-size: 0.9rem; }
.site-footer a { color: var(--muted); }
.site-footer .fam { margin: 0.2em 0; }
.site-footer .fam strong { color: var(--fg); }

a { color: var(--accent); }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; font-size: 0.9em; }

.hero h1 { font-size: 2.5rem; margin: 0.5rem 0; }
.hero .tagline { color: var(--muted); margin-bottom: 1.5rem; }
.hero .counts span { display: inline-block; margin-right: 1.5rem; color: var(--muted); }
.hero .counts strong { color: var(--fg); font-size: 1.2rem; }
.hero-cta { margin-top: 1.5rem; }
.cta-link {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 500;
}
.cta-link:hover { filter: brightness(0.93); }

/* Landing hero — pastel gray→red gradient banner with stat strip. */
.hero {
  background: linear-gradient(135deg, #E6E6EA, #F7CDCD);
}
.landing-hero {
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3rem 1.5rem 2.5rem;
  margin: 1.5rem 0 2rem;
}
.landing-hero h1 { font-size: 2.7rem; letter-spacing: -0.02em; }
.landing-hero .tagline { max-width: 660px; margin: 0 auto; font-size: 1.15rem; }
.stats { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; margin-top: 1.75rem; }
.stat { background: rgba(255,255,255,0.6); border: 1px solid var(--border); border-radius: 12px; padding: 0.75rem 1.4rem; min-width: 120px; }
.stat b { display: block; font-size: 1.7rem; line-height: 1.1; }
.stat span { font-size: 0.74rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* Landing 3-card grid. */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.4rem; }
.landing-card { border-radius: 16px; padding: 1.75rem; box-shadow: 0 1px 3px rgba(0,0,0,0.05); transition: transform 0.15s ease, box-shadow 0.15s ease; }
.landing-card:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(0,0,0,0.10); }
.landing-card .ic { font-size: 2.1rem; }
.landing-card h2 { margin: 0.45em 0 0.35em; font-size: 1.25rem; color: var(--fg); }
.landing-card p { margin: 0 0 1.2em; color: var(--muted); font-size: 0.95rem; }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 0.5em 1.15em; border-radius: 999px; font-size: 0.9rem; font-weight: 600; text-decoration: none; }
.btn:hover { filter: brightness(0.93); text-decoration: none; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: 1rem 1.25rem; }
.card h2, .card h3 { margin-top: 0; }
.card h2 { font-size: 1.05rem; color: var(--muted); }
.cat-tile { text-decoration: none; color: var(--fg); transition: border-color 0.15s; }
.cat-tile:hover { border-color: var(--accent); }
.cat-tile h3 { color: var(--accent); }
.cat-tile .big { font-size: 2rem; font-weight: 700; margin: 0.25rem 0; }

.trait-header h1 { margin: 0.25rem 0; }
.curie { color: var(--muted); font-size: 0.95rem; margin-top: 0; }
.definition { font-size: 1.05rem; margin-top: 1rem; }
.breadcrumb { color: var(--muted); margin: 0; font-size: 0.9rem; }
.breadcrumb a { text-decoration: none; }
.breadcrumb span { margin: 0 0.4em; }

.kg-context .match-method { font-size: 0.95rem; }
.kg-context .no-match { color: var(--muted); font-size: 0.9rem; font-style: italic; }
.kg-context ul { margin-bottom: 0.5rem; }
.dim-preview { color: var(--muted); font-family: monospace; font-size: 0.8em; }

dl { margin: 0; }
dt { color: var(--muted); font-size: 0.85rem; margin-top: 0.5rem; }
dd { margin: 0.1rem 0 0 0; }
.meta { color: var(--muted); font-size: 0.85rem; }

.synonyms li { margin: 0.2rem 0; }
.xrefs { list-style: none; padding: 0; }
.xrefs li { display: inline-block; margin-right: 0.5rem; }

.changes { margin: 0.25rem 0 0 0; color: var(--muted); font-size: 0.9rem; }

table.trait-list { width: 100%; border-collapse: collapse; margin-top: 1rem; }
table.trait-list th, table.trait-list td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
table.trait-list th { background: var(--accent-soft); color: var(--muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
table.trait-list tr:hover { background: var(--accent-soft); }

.no-page { color: var(--muted); pointer-events: none; }

/* Two-column layout used on per-trait pages — main article on the left,
   sticky source/metadata rail on the right. Stacks on narrow viewports. */
.layout-2col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 850px) {
  .layout-2col { grid-template-columns: 1fr; }
}
.rail {
  position: sticky;
  top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.9rem;
}
.rail .card { padding: 0.85rem 1rem; }
.rail .card h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.5rem 0;
  color: var(--muted);
}
.rail-path { margin: 0 0 0.5rem 0; word-break: break-all; }
.rail-path code { background: var(--code-bg); font-size: 0.78rem; }
.rail-links { list-style: none; padding: 0; margin: 0; }
.rail-links li { margin: 0.25rem 0; }
.rail-links a {
  display: block;
  padding: 0.4rem 0.6rem;
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  border-radius: 4px;
  font-weight: 500;
  transition: background 0.12s;
}
.rail-links a:hover { background: var(--accent); color: #fff; }
.rail-meta { font-size: 0.85rem; }
.rail-meta dt { margin-top: 0.4rem; }
.rail-meta dd { margin-left: 0; }
.source-card { border-color: var(--accent); }

/* Deep-research output card: scrolling preformatted markdown so the
   research narrative doesn't dominate the page or overflow horizontally. */
.research-card pre.research-md {
  max-height: 480px;
  overflow: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  background: var(--code-bg);
  padding: 0.75rem 1rem;
  border-radius: 4px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 0.92rem;
  line-height: 1.55;
  margin: 0.5rem 0 0 0;
}
.research-card { border-left: 4px solid var(--accent); }

/* DisMech-style causal pathographs on trait pages */
.causal-graphs { margin: 1.25rem 0; }
.causal-graph-card { margin-bottom: 1rem; }
.graph-warning {
  background: #fff7ed;
  border: 1px solid #fdba74;
  border-radius: 6px;
  color: #9a3412;
  margin: 0.75rem 0;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
}
.graph-warning strong { display: block; margin-bottom: 0.35rem; }
.graph-warning ul { margin: 0.35rem 0 0 1rem; padding: 0; }
.pathograph-container {
  position: relative;
  overflow: hidden;
  margin: 1rem 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.pathograph-container svg {
  display: block;
  width: 100%;
  cursor: grab;
}
.pathograph-container svg:active { cursor: grabbing; }
.pathograph-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem 0.9rem;
  background: #f4f6f8;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
}
.pathograph-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  user-select: none;
}
.pathograph-legend-item.dimmed { opacity: 0.38; }
.pathograph-legend-item input { margin: 0; accent-color: var(--accent); }
.pathograph-legend-swatch {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}
.pathograph-tooltip {
  position: absolute;
  z-index: 20;
  max-width: 320px;
  padding: 0.55rem 0.7rem;
  background: rgba(26, 28, 31, 0.94);
  color: #fff;
  border-radius: 5px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  font-size: 0.78rem;
  line-height: 1.45;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.14s;
}
.pathograph-tooltip .tt-title { font-weight: 650; margin-bottom: 0.2rem; }
.pathograph-tooltip .tt-type {
  color: #cbd5e1;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
}
.pathograph-tooltip .tt-desc { color: #e5e7eb; margin-bottom: 0.35rem; }
.pathograph-tooltip .tt-meta { color: #cbd5e1; font-size: 0.72rem; }
.pathograph-tooltip .tt-meta span { display: block; }
.edge-evidence {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}
.edge-evidence h3 {
  margin: 0 0 0.5rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.edge-evidence > ul {
  display: grid;
  gap: 0.65rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.edge-evidence > ul > li {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 0.7rem 0.85rem;
}
.edge-evidence ul ul { margin: 0.4rem 0 0 1.1rem; padding: 0; }
.edge-evidence li li { margin: 0.25rem 0; }
.edge-predicate {
  color: var(--muted);
  display: inline-block;
  margin: 0 0.35rem;
}
.evidence-snippet {
  display: block;
  margin-top: 0.2rem;
  color: var(--muted);
  font-style: italic;
}

/* UMAP page */
.umap-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.umap-controls label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; color: var(--muted); }
.umap-controls select, .umap-controls input[type="search"] {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
}
#umap-plot { background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem; }
#umap-plot circle:hover { stroke: #1a1c1f; stroke-width: 1.5; }
.umap-tooltip {
  position: absolute;
  display: none;
  background: rgba(26, 28, 31, 0.94);
  color: #fff;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  font-size: 0.85rem;
  pointer-events: none;
  z-index: 10;
}
.umap-tooltip .muted { color: #b8c2cc; font-size: 0.78rem; }

/* Per-trait nearest-neighbors */
.nn-list { list-style: none; padding: 0; margin: 0; }
.nn-list li { padding: 0.3rem 0; border-bottom: 1px dashed var(--border); }
.nn-list li:last-child { border-bottom: none; }
.nn-list .sim { color: var(--muted); font-family: monospace; font-size: 0.78rem; margin-left: 0.4em; }
.nn-list .nn-cat { display: inline-block; font-size: 0.72rem; color: var(--muted); padding: 0.1em 0.4em; border-radius: 3px; background: var(--accent-soft); margin-right: 0.3em; }