/* Shared colors and type for the explorer and model pages. */
:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --surface: #faf8f3;
  --surface-2: #ece8de;
  --line: #ddd7c9;
  --line-strong: #b9b1a0;
  --ink-rule: #1d1b17;
  --text: #1d1b17;
  --text-2: #4a463d;
  --muted: #6b665a;
  --accent: #b83a17;
  --accent-soft: #f5e6dc;
  --accent-line: #e2b39d;
  --warn: #8a5a00;
  --warn-soft: #f6ead0;
  --shadow: 0 1px 0 rgb(29 27 23 / 0.06), 0 10px 28px rgb(29 27 23 / 0.10);
  --layer-global: #c4401c; --layer-swa: #b8860b; --layer-linear: #1479a0;
  --series-1: #c4401c; --series-2: #1479a0; --series-3: #b8860b; --series-4: #7a4fa8; --series-5: #3f7d3a; --series-6: #c2477f; --series-off: #e8d3c6;
  --nd: #c9c2b2;
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Cambria Math", "STIX Two Math", "Noto Sans Math", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #171611; --surface: #1d1c16; --surface-2: #26241d; --line: #34322a; --line-strong: #4f4b40; --ink-rule: #e9e4d6;
    --text: #ece7d9; --text-2: #c0b9a8; --muted: #959080; --accent: #ec7048; --accent-soft: #33221a; --accent-line: #6e3f2b;
    --warn: #e0a64a; --warn-soft: #2f2615; --shadow: 0 1px 0 rgb(0 0 0 / 0.3), 0 10px 28px rgb(0 0 0 / 0.4);
    --layer-global: #e0603a; --layer-swa: #b88a2a; --layer-linear: #3a98bd;
    --series-1: #e0603a; --series-2: #3a98bd; --series-3: #b88a2a; --series-4: #9a7bd0; --series-5: #5a9a4e; --series-6: #d0679a; --series-off: #3d2c24;
    --nd: #4f4b40;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171611; --surface: #1d1c16; --surface-2: #26241d; --line: #34322a; --line-strong: #4f4b40; --ink-rule: #e9e4d6;
  --text: #ece7d9; --text-2: #c0b9a8; --muted: #959080; --accent: #ec7048; --accent-soft: #33221a; --accent-line: #6e3f2b;
  --warn: #e0a64a; --warn-soft: #2f2615; --shadow: 0 1px 0 rgb(0 0 0 / 0.3), 0 10px 28px rgb(0 0 0 / 0.4);
  --layer-global: #e0603a; --layer-swa: #b88a2a; --layer-linear: #3a98bd;
  --series-1: #e0603a; --series-2: #3a98bd; --series-3: #b88a2a; --series-4: #9a7bd0; --series-5: #5a9a4e; --series-6: #d0679a; --series-off: #3d2c24;
  --nd: #4f4b40;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 13.5px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }
button, select, input { font: inherit; color: inherit; }
code { font-family: var(--mono); font-size: 0.92em; }

/* ---------- header ---------- */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  flex-wrap: wrap;
  max-width: 1600px;
  margin: 0 auto;
  padding: 18px 28px 10px;
  border-bottom: 2px solid var(--ink-rule);
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand > div { display: flex; align-items: baseline; gap: 4px 18px; flex-wrap: wrap; }
.brand:hover { text-decoration: none; }
.brand:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
.brand img { display: block; flex: none; }
.brand-name {
  display: block;
  margin: 0;
  font: 400 38px/0.95 var(--display);
  letter-spacing: -0.01em;
}
.masthead p { margin: 0; color: var(--text-2); font-size: 13px; max-width: 900px; }
.meta { display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: 13px; white-space: nowrap; flex-wrap: wrap; }
.meta a { color: var(--text-2); font-weight: 500; }
.meta a:hover { color: var(--text); }
.meta a[aria-current="page"] { color: var(--text); text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 6px; }
.downloads { display: inline-flex; gap: 8px; align-items: baseline; font-family: var(--mono); font-size: 12px; }
.downloads::before { content: "data"; color: var(--muted); font-family: var(--mono); }
.meta a.github-star {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 3px;
  background: var(--text); color: var(--bg); font-weight: 600;
}
.meta a.github-star:hover { background: var(--accent); color: #fff; text-decoration: none; }
.github-star svg { width: 16px; height: 16px; }
.icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  color: var(--text-2);
}
.icon:hover { border-color: var(--text); color: var(--text); }

main { max-width: 1600px; margin: 0 auto; padding: 4px 28px 48px; }
.loading { display: none; margin: 48px auto; max-width: 1600px; min-height: calc(100vh - 280px); padding: 0 28px; color: var(--muted); }
:root[data-theme] .loading { display: block; }

.site-footer {
  max-width: 1600px;
  margin: 0 auto;
  padding: 10px 28px 40px;
  color: var(--muted);
  font-size: 12.5px;
}
.site-footer p { margin: 0; }
.site-footer .fine { font-size: 12px; }
@media (max-width: 760px) {
  .site-footer, .masthead, main { padding-left: 16px; padding-right: 16px; }
  .masthead { align-items: flex-start; }
  .brand-name { font-size: 32px; }
  .meta { gap: 6px 14px; }
}
.theme-icon::before { content: "☾"; }
:root[data-theme="dark"] .theme-icon::before { content: "☀"; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon::before { content: "☀"; }
}
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Shared page layout. */
.masthead { max-width: none; }
.model-page main, .model-page .site-footer { max-width: 1600px; margin: 0 auto; }
.model-page main:has(> .breadcrumb), .model-page main:has(> .breadcrumb) + .site-footer { max-width: 1280px; }