/* Shared chart tokens. Categorical slots follow the validated dataviz reference
   palette (light and dark stepped separately, never auto-flipped), checked against
   these chart surfaces: #fcfcfb light, #172036 dark. Page and ink colours match
   the project page in site/. */
@font-face {
  font-family: 'Schibsted Grotesk'; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url(../fonts/schibsted-grotesk-latin.woff2) format('woff2');
}
@font-face {
  font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap;
  src: url(../fonts/ibm-plex-mono-400-latin.woff2) format('woff2');
}
:root {
  color-scheme: light;
  --surface-0: #f4f6f5;
  --surface-1: #fcfcfb;
  --text-primary: #14203a;
  --text-secondary: #4b566d;
  --text-muted: #6f7a8f;
  --rule: #d4dcdf;
  --link: #1b48c9;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100;
  --s5: #e87ba4; --s6: #008300; --s7: #4a3aa7; --s8: #e34948;
  --node: #55544e;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --surface-0: #0f1626;
    --surface-1: #172036;
    --text-primary: #e6ebf3;
    --text-secondary: #a3aec3;
    --text-muted: #8390a8;
    --rule: #273252;
    --link: #8eaeff;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500;
    --s5: #d55181; --s6: #008300; --s7: #9085e9; --s8: #e66767;
    --node: #a3aec3;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--surface-0);
  color: var(--text-primary);
  font: 14px/1.5 'Schibsted Grotesk', system-ui, sans-serif;
}
code { font-family: 'IBM Plex Mono', ui-monospace, Menlo, monospace; font-size: 0.92em; }
.masthead {
  max-width: 1480px; margin: 0 auto; padding: 22px 28px 0;
  display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 12px;
}
.masthead .wordmark { font-weight: 800; font-size: 17px; color: var(--text-primary); text-decoration: none; letter-spacing: -0.01em; }
.masthead nav { display: flex; gap: 22px; }
.masthead nav a { color: var(--text-secondary); text-decoration: none; font-size: 15px; }
.masthead nav a:hover { color: var(--text-primary); text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.viz-root {
  max-width: 1480px;
  margin: 24px auto;
  padding: 24px 28px 28px;
  background: var(--surface-1);
  border: 1px solid var(--rule);
  border-radius: 12px;
}
header h1 { margin: 0 0 6px; font-size: 30px; line-height: 1.1; font-weight: 800; letter-spacing: -0.02em; }
header .sub { margin: 0; color: var(--text-secondary); max-width: 900px; }
nav.pages { display: flex; gap: 6px; margin: 0 0 16px; flex-wrap: wrap; }
nav.pages a {
  color: var(--text-secondary); text-decoration: none; font-size: 13px;
  padding: 4px 10px; border: 1px solid var(--rule); border-radius: 999px;
}
nav.pages a[aria-current="page"] { color: var(--text-primary); border-color: var(--text-muted); font-weight: 600; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 16px 0 8px; }
.legend button, .legend span.key {
  display: inline-flex; align-items: center; gap: 7px;
  font: inherit; font-size: 13px; color: var(--text-primary);
  background: none; border: 1px solid transparent; border-radius: 6px;
  padding: 3px 8px 3px 4px; cursor: pointer;
}
.legend span.key { cursor: default; }
.legend button:hover { border-color: var(--rule); }
.legend button[aria-pressed="false"] { opacity: .38; }
.legend .swatch { width: 12px; height: 12px; border-radius: 3px; flex: none; }
.legend .hint { color: var(--text-muted); font-size: 12px; align-self: center; }

.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { fill: var(--text-primary); font-size: 12px; }
.chart text.muted { fill: var(--text-muted); }
.chart text.col-head {
  fill: var(--text-muted); font-size: 11px; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
}

.tip {
  position: fixed; z-index: 10; pointer-events: none;
  max-width: 360px; padding: 8px 10px;
  background: var(--surface-1); color: var(--text-primary);
  border: 1px solid var(--rule); border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,.14);
  font-size: 12.5px;
}
.tip b { font-weight: 600; }
.tip .k { color: var(--text-muted); }
.tip code, .notes code, td code { font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.tip .row { display: flex; align-items: center; gap: 6px; }

details { margin-top: 18px; }
details summary { cursor: pointer; color: var(--text-secondary); }
table { border-collapse: collapse; margin-top: 10px; font-size: 12.5px; width: 100%; }
th, td { text-align: left; padding: 5px 10px 5px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--text-muted); font-weight: 600; }
.notes { margin-top: 14px; color: var(--text-secondary); font-size: 12.5px; }
.notes li { margin: 3px 0; }
.chart text.halo { paint-order: stroke; stroke: var(--surface-1); stroke-width: 3px; stroke-linejoin: round; }

/* single-page layout */
section.diagram { padding-top: 26px; margin-top: 26px; border-top: 1px solid var(--rule); }
section.diagram:first-of-type { border-top: 0; margin-top: 8px; padding-top: 8px; }
section.diagram h2.title { margin: 0 0 4px; font-size: 18px; font-weight: 600; }
.side-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
.panel { border-left: 1px solid var(--rule); padding-left: 18px; min-height: 300px; }
.panel h2 { font-size: 15px; margin: 4px 0 2px; }
.panel .crumbs { color: var(--text-muted); font-size: 12px; }
.panel ol, .panel ul { padding-left: 18px; margin: 8px 0; }
.panel li { margin: 4px 0; }
.panel .kind, .panel dt { font-size: 11px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--text-muted); }
.panel dl { margin: 8px 0; }
.panel dd { margin: 2px 0 8px; }
.chart circle, .chart path.arc { cursor: pointer; }
@media (max-width: 1000px) { .side-wrap { grid-template-columns: 1fr; } .panel { border: 0; padding: 0; } }