:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel-border: #2a3441;
  --surface: #0f1620;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #4cc2ff;
  --warn: #d29922;
  --bad: #f85149;
  /* role kinds — dataviz reference palette, dark steps (validated on --surface) */
  --k-pathway: #3987e5;
  --k-special: #d95926;
  --k-grade: #199e70;
  --spec: #c9d1d9;
  --edge: #3a4656;
}

* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
}
header, main, footer { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 32px; }
footer { margin: 40px auto 48px; color: var(--muted); font-size: 0.85rem; }
a { color: var(--accent); }
h1 { margin: 0 0 8px; font-size: 1.85rem; }
.subtitle { color: var(--muted); max-width: 95ch; }
.repo-link { margin: 6px 0 0; font-size: 0.85rem; }
.repo-link a { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); text-decoration: none; }
.repo-link a:hover { color: var(--accent); }
.repo-link svg { display: block; }
code { color: var(--accent); background: var(--surface); padding: 0 4px; border-radius: 4px; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }

.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 0; }
.tabs a {
  text-decoration: none; color: var(--muted); padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--panel-border); font-size: 0.92rem; font-weight: 600;
}
.tabs a:hover { color: var(--text); }
.tabs a.active { color: var(--bg); background: var(--accent); border-color: var(--accent); }

.status { margin: 14px 0 0; padding: 10px 14px; border-radius: 8px; background: var(--panel); color: var(--muted); font-size: 0.9rem; }
.status--warn { border-left: 3px solid var(--warn); color: #e6d8b8; }
.status--bad { border-left: 3px solid var(--bad); color: #ffc9c4; }

main { margin-top: 20px; }
.panel { background: var(--panel); border: 1px solid var(--panel-border); border-radius: 12px; padding: 20px; }
.panel h3 { margin: 22px 0 8px; font-size: 1rem; }
.note {
  margin: 12px 0 0; padding: 10px 14px; max-width: 95ch;
  border-left: 3px solid var(--warn); border-radius: 0 8px 8px 0; background: #1f1a10; color: #e6d8b8;
}

.controls { display: flex; flex-wrap: wrap; gap: 12px 18px; align-items: flex-end; margin: 0 0 12px; }
.field { margin: 0; max-width: 100%; min-width: 0; }
.field.grow { flex: 1; min-width: 220px; }
.field label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 6px; }
input[type="search"], select {
  width: 100%; background: var(--surface); border: 1px solid var(--panel-border); color: var(--text);
  border-radius: 8px; padding: 8px 10px; font-size: 0.95rem; font-family: inherit;
}
select { width: auto; max-width: 100%; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 0.88rem; cursor: pointer; }
.check input { accent-color: var(--accent); }
.btn {
  background: var(--surface); color: var(--text); border: 1px solid var(--panel-border); border-radius: 8px;
  padding: 7px 12px; font: inherit; font-size: 0.88rem; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }

/* index cards */
.group-h { margin: 22px 0 10px !important; font-size: 1.02rem; }
.scards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.scard {
  display: flex; flex-direction: column; gap: 2px; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--panel-border); border-radius: 10px; padding: 11px 13px;
  transition: border-color .15s;
}
.scard:hover, .scard:focus-visible { border-color: var(--accent); }
.scard-codes { display: flex; gap: 4px; }
.code { font-size: 0.72rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent); border: 1px solid var(--panel-border); border-radius: 5px; padding: 0 5px; }
.code--retired { color: var(--muted); text-decoration: line-through; }
.scard-title { font-weight: 650; }
.scard-sub { color: var(--muted); font-size: 0.8rem; }
.scard-why { color: var(--warn); font-size: 0.76rem; }

/* factsheet */
.crumbs { margin: 0 0 6px; font-size: 0.86rem; color: var(--muted); }
.fs-title { margin: 0; font-size: 1.6rem; display: flex; align-items: center; gap: 8px; }
.fs-codes { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.badge { font-size: 0.8rem; border: 1px solid var(--panel-border); border-radius: 999px; padding: 2px 10px; color: var(--muted); }
.badge b { color: var(--accent); font-variant-numeric: tabular-nums; }
.badge--retired { opacity: .7; }
.badge--tfc { color: var(--text); }
.fs-summary { font-size: 1.04rem; max-width: 80ch; margin: 14px 0 0; }
.fs-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px 32px; }
@media (max-width: 860px) { .fs-grid { grid-template-columns: 1fr; } }

.tbl { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.tbl th { text-align: left; color: var(--muted); font-weight: 600; font-size: 0.78rem; border-bottom: 1px solid var(--panel-border); padding: 5px 8px; }
.tbl td { border-bottom: 1px solid #222b37; padding: 6px 8px; vertical-align: top; }
.tbl .num { font-variant-numeric: tabular-nums; color: var(--accent); font-weight: 600; white-space: nowrap; }
.tbl tr.retired td { color: var(--muted); }
#ctable, #gtable { overflow-x: auto; }

.dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; font-size: 0.9rem; }
.dl dt { color: var(--muted); }
.dl dd { margin: 0; }

.lbl { margin: 14px 0 6px; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.ladder { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.84rem; text-decoration: none; color: var(--text);
  border: 1px solid var(--panel-border); border-radius: 999px; padding: 2px 10px 2px 8px; background: var(--surface);
}
.chip:hover { border-color: var(--accent); }
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--muted); }
.chip--pathway::before { background: var(--k-pathway); }
.chip--special-interest::before { background: var(--k-special); transform: rotate(45deg); }
.chip--grade::before { background: var(--k-grade); border-radius: 50% 50% 0 0; }
.ladder .chip { padding: 1px 9px 1px 7px; }
.conns { margin: 0; padding-left: 18px; }
.conns li { margin: 4px 0; }
.edit { margin-top: 20px; }

/* svg marks shared by ego + main graph */
.n-spec { fill: var(--spec); stroke: var(--surface); stroke-width: 2; }
.n-self { fill: var(--accent); stroke: var(--surface); stroke-width: 3; }
.n-focus { fill: var(--accent); }
.n-role { stroke: var(--surface); stroke-width: 2; }
.n--pathway { fill: var(--k-pathway); }
.n--special-interest { fill: var(--k-special); }
.n--grade { fill: var(--k-grade); }
.e { stroke: var(--edge); stroke-width: 1; }
.e--core { stroke: #56657a; stroke-width: 1.5; }
.e--lit { stroke: var(--accent); stroke-width: 1.6; }
.e--dim { stroke: #1e2731; }
.e--hub { stroke: #2a3441; }

/* training pathways as shaded regions: one group per pathway, faded as a whole
   so a pathway's own circles/links don't stack, while two overlapping pathways do */
.region { fill: var(--k-pathway); stroke: var(--k-pathway); stroke-linecap: round; opacity: .16; cursor: pointer; transition: opacity .15s; }
.region:hover { opacity: .26; }
.region--on { opacity: .34; }
.region--dim { opacity: .05; }
.region-lbl { font-size: 11px; font-weight: 700; letter-spacing: .05em; fill: #8cbcf2; pointer-events: none; }
.region-lbl.dim { opacity: .25; }
.region .region-bridge { stroke-width: 4; stroke-dasharray: 2 9; fill: none; }
.region-swatch { fill: var(--k-pathway); opacity: .45; }

.ego { margin-top: 10px; }
.ego-svg { width: 100%; height: auto; background: var(--surface); border-radius: 10px; display: block; }
.ego-svg text { font-size: 10px; fill: var(--muted); }
.ego-svg .lbl-rr { fill: var(--text); font-weight: 600; paint-order: stroke; stroke: var(--surface); stroke-width: 3px; }
.ego-svg a:hover text { fill: var(--accent); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 8px 0 0; font-size: 0.8rem; color: var(--muted); }
.lg-item { display: inline-flex; align-items: center; gap: 5px; }

/* graph */
.graph-wrap { display: flex; flex-direction: column; gap: 14px; margin-top: 10px; }
.graph-box { width: 100%; }
.graph {
  width: 100%; height: auto; background: var(--surface); border-radius: 10px;
  touch-action: none; cursor: grab; user-select: none; display: block;
}
.graph:active { cursor: grabbing; }
.graph .node { cursor: pointer; outline: none; }
.graph .node.dim { opacity: .18; }
.graph .node:focus-visible .n-spec, .graph .node:focus-visible .n-role { stroke: var(--accent); }
.graph .hit { fill: transparent; }
.graph text { pointer-events: none; paint-order: stroke; stroke: var(--surface); stroke-width: 3px; stroke-linejoin: round; }
.lbl-s { font-size: 11px; fill: var(--muted); }
.lbl-r { font-size: 12px; font-weight: 600; fill: var(--text); }
.gside { background: var(--surface); border-radius: 10px; padding: 12px 14px; font-size: 0.88rem; columns: 2 280px; column-gap: 28px; }
.gside > * { break-inside: avoid; }
.gside .lbl:first-child { margin-top: 0; }
.side-title { margin: 0 0 4px !important; font-size: 1.05rem !important; }
.side-list, .rank { margin: 0; padding-left: 26px; max-height: 420px; overflow: auto; }
.side-list li, .rank li { margin: 2px 0; }
.table-view { margin-top: 14px; }
.table-view summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }

.tip {
  position: fixed; z-index: 10; pointer-events: none; max-width: 280px;
  background: #0b1016; border: 1px solid var(--panel-border); border-radius: 8px; padding: 8px 10px;
  font-size: 0.82rem; color: var(--text); box-shadow: 0 6px 20px rgba(0,0,0,.4);
}

/* code index */
.seg { display: inline-flex; border: 1px solid var(--panel-border); border-radius: 8px; overflow: hidden; }
.seg-b { background: var(--surface); color: var(--muted); border: 0; padding: 8px 12px; font: inherit; font-size: 0.86rem; cursor: pointer; }
.seg-b[aria-selected="true"] { background: var(--accent); color: var(--bg); font-weight: 600; }

.prose { max-width: 90ch; }
.prose h2 { margin-top: 0; }
.prose li { margin-bottom: 6px; }
.yaml { background: var(--surface); border: 1px solid var(--panel-border); border-radius: 8px; padding: 12px 14px; overflow-x: auto; font-size: 0.82rem; color: #c9d1d9; }

/* how a treatment function is linked to its factsheet */
.basis { display: inline-block; font-size: 0.72rem; font-weight: 600; border-radius: 999px; padding: 0 8px; border: 1px solid var(--panel-border); white-space: nowrap; cursor: help; }
.basis--code-match { color: var(--muted); }
.basis--curated { color: #e6d8b8; border-color: #6b5a2e; background: #1f1a10; }

/* code tree */
.tree-filters { display: flex; flex-direction: column; gap: 10px; margin: 12px 0 8px; }
.frow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.frow input[type="search"] { flex: 1; min-width: 220px; width: auto; }
.flbl { font-size: 0.8rem; font-weight: 700; min-width: 170px; }
.fchip {
  font: inherit; font-size: 0.84rem; cursor: pointer; color: var(--muted); background: var(--surface);
  border: 1px solid var(--panel-border); border-radius: 999px; padding: 3px 12px;
}
.fchip:hover { color: var(--text); border-color: var(--accent); }
.fchip[aria-pressed="true"] { color: var(--bg); background: var(--accent); border-color: var(--accent); font-weight: 600; }
.check:has(input:disabled) { opacity: .5; cursor: not-allowed; }

.tree, .tree ul { list-style: none; margin: 0; padding: 0; }
.tree ul { margin-left: 14px; padding-left: 14px; border-left: 1px solid var(--panel-border); }
.tree li { position: relative; }
.tree ul > li::before { content: ""; position: absolute; left: -14px; top: 15px; width: 12px; border-top: 1px solid var(--panel-border); }
.tree ul > li.t-leaf--curated::before { border-top: 1px dashed #b08a3e; }
.tree summary { cursor: pointer; list-style: none; }
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before { content: "▸"; display: inline-block; width: 14px; color: var(--muted); transition: transform .12s; }
.tree details[open] > summary::before { transform: rotate(90deg); }
.t-head { font-weight: 700; font-size: 1.02rem; padding: 6px 0; }
.t-node { padding: 4px 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 6px; }
.t-branch--empty > .t-node { padding-left: 14px; }
.t-title { font-weight: 600; }
.t-also { color: var(--muted); font-size: 0.78rem; }
.t-count { color: var(--muted); font-size: 0.78rem; font-weight: 400; }
.t-go { font-size: 0.78rem; margin-left: auto; text-decoration: none; }
.t-leaf { padding: 3px 0; font-size: 0.9rem; }
.t-leaf--none { padding-left: 2px; }
.t-svc { color: var(--muted); font-size: 0.74rem; }
.code--tfc { color: var(--text); }
.t-leaf--curated .code--tfc { border-style: dashed; border-color: #6b5a2e; }
@media (max-width: 600px) { .flbl { min-width: 100%; } .t-go { margin-left: 0; } }