/* Visual system shared with the static figures (src/mathgeom/report/style.py): palette validated for
   colour-vision deficiency; ≤ 3 categorical hues per plot; trained = blue, random-init twin = grey. */
:root {
  color-scheme: light;
  --ord: #86b6ef,#6da7ec,#5598e7,#3987e5,#2a78d6,#256abf,#1c5cab,#184f95,#104281,#0d366b;  /* = style.py SEQ[3:] */
  --surface: #fcfcfb; --page: #f9f9f7; --ink: #0b0b0b; --ink2: #52514e; --muted: #898781;
  --grid: #e1e0d9; --axis: #c3c2b7; --ring: rgba(11, 11, 11, 0.10);
  --blue: #2a78d6; --orange: #eb6834; --aqua: #1baf7a; --twin: #a3a29b; --red: #e34948; --mid: #f0efec;
  --seq-lo: #cde2fb; --seq-hi: #0d366b; --accent-wash: rgba(42, 120, 214, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --surface: #1a1a19; --page: #0d0d0d; --ink: #f0efec; --ink2: #c3c2b7; --muted: #898781;
    --grid: #2c2c2a; --axis: #383835; --ring: rgba(255, 255, 255, 0.10);
    --blue: #3987e5; --orange: #d95926; --aqua: #199e70; --twin: #6f6e69; --red: #e66767; --mid: #383835;
    --seq-lo: #184f95; --seq-hi: #cde2fb; --accent-wash: rgba(57, 135, 229, 0.12);
    --ord: #184f95,#256abf,#3987e5,#6da7ec,#9ec5f4,#cde2fb;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface: #1a1a19; --page: #0d0d0d; --ink: #f0efec; --ink2: #c3c2b7; --muted: #898781;
  --grid: #2c2c2a; --axis: #383835; --ring: rgba(255, 255, 255, 0.10);
  --blue: #3987e5; --orange: #d95926; --aqua: #199e70; --twin: #6f6e69; --red: #e66767; --mid: #383835;
  --seq-lo: #184f95; --seq-hi: #cde2fb; --accent-wash: rgba(57, 135, 229, 0.12);
    --ord: #184f95,#256abf,#3987e5,#6da7ec,#9ec5f4,#cde2fb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--blue); }
code { font-size: 0.88em; background: var(--surface); border: 1px solid var(--ring); border-radius: 4px; padding: 0 4px; }

/* layout: a reading column with wider figures (Distill-style) */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.prose { max-width: 720px; margin: 0 auto; position: relative; }
header.hero { padding: 48px 0 8px; }
header.hero h1 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.01em; }
.byline { color: var(--ink2); font-size: 0.92rem; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.tldr { background: var(--surface); border: 1px solid var(--ring); border-radius: 12px; padding: 16px 20px; margin: 24px 0; }
.tldr h2 { margin: 0 0 6px; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink2); }
.tldr ul { margin: 0; padding-left: 20px; }
h2.section { font-size: 1.5rem; margin: 56px 0 8px; padding-top: 12px; border-top: 1px solid var(--grid); }
h2.section .num { color: var(--muted); font-weight: 500; margin-right: 8px; }
.kicker { color: var(--ink2); }

/* sticky control bar (one filter row above everything it scopes) */
.controls {
  position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--page) 92%, transparent);
  backdrop-filter: blur(6px); border-bottom: 1px solid var(--grid); padding: 10px 0;
}
.controls .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; font-size: 0.88rem; }
.controls label { color: var(--ink2); display: inline-flex; align-items: center; gap: 6px; }
select, button, input[type="search"] {
  font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--axis);
  border-radius: 8px; padding: 4px 10px;
}
button { cursor: pointer; }
button:hover { background: var(--accent-wash); }
button[aria-pressed="true"] { border-color: var(--blue); color: var(--blue); background: var(--accent-wash); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
input[type="range"] { width: min(260px, 40vw); accent-color: var(--blue); }
.layer-readout { font-variant-numeric: tabular-nums; color: var(--ink); min-width: 9.5em; }
.toc { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 0.85rem; margin-left: auto; }
.toc a { color: var(--ink2); text-decoration: none; }
.toc a:hover { color: var(--blue); }

/* figures */
figure.fig { margin: 28px 0 36px; background: var(--surface); border: 1px solid var(--ring); border-radius: 14px; padding: 16px 18px 10px; }
.fig-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-bottom: 4px; }
.fig-num { color: var(--muted); font-size: 0.82rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.fig-title { font-weight: 650; font-size: 1.05rem; flex: 1 1 380px; }
.fig-tools { display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.82rem; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0; font-size: 0.82rem; }
.view-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 4px 0 6px; font-size: 0.82rem; }
.view-row label { display: inline-flex; align-items: center; gap: 4px; color: var(--ink2); }
.under { display: grid; grid-template-columns: minmax(220px, 340px) 1fr; gap: 12px; align-items: center; margin-top: 6px; }
.scree { min-height: 150px; }
.pin-note { font-size: 0.84rem; margin-top: 6px; }
@media (max-width: 640px) { .under { grid-template-columns: 1fr; } }
.panels { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.panels.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.panel { min-height: 300px; }
.panel.tall { min-height: 420px; }
.panel.short { min-height: 230px; }
figcaption { color: var(--ink2); font-size: 0.9rem; margin-top: 8px; display: grid; gap: 4px; }
figcaption b { color: var(--ink); }
figcaption .caveat::before { content: "Caveat. "; font-weight: 600; color: var(--ink); }
figcaption .read::before { content: "How to read. "; font-weight: 600; color: var(--ink); }
.table-view { display: none; overflow-x: auto; margin-top: 8px; }
.table-view.open { display: block; }
table { border-collapse: collapse; width: 100%; font-size: 0.84rem; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--grid); vertical-align: top; }
th { color: var(--ink2); font-weight: 600; }
td.num, th.num { font-variant-numeric: tabular-nums; text-align: right; }
.scorecard td.cell { white-space: nowrap; font-variant-numeric: tabular-nums; }
.scorecard tr:hover td { background: var(--accent-wash); }
.legend-note { font-size: 0.8rem; color: var(--ink2); margin-top: 6px; }

/* stat tiles (a number that *is* the chart) */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin: 18px 0; }
.tile { background: var(--surface); border: 1px solid var(--ring); border-radius: 12px; padding: 12px 14px; }
.tile .v { font-size: 1.7rem; font-weight: 650; line-height: 1.1; }
.tile .k { color: var(--ink2); font-size: 0.82rem; margin-top: 4px; }
.tile .t { color: var(--muted); font-size: 0.78rem; }

/* sidenotes: margin notes on wide screens, inline boxes on narrow ones */
.sidenote { font-size: 0.82rem; color: var(--ink2); }
@media (min-width: 1500px) {
  .sidenote { position: absolute; right: -250px; width: 220px; margin-top: -2.2em; border-left: 2px solid var(--grid); padding-left: 10px; }
}
@media (max-width: 1499px) {
  .sidenote { display: block; border-left: 2px solid var(--grid); padding-left: 10px; margin: 6px 0 12px; }
}

/* concept card / analogy results */
.card { border: 1px solid var(--ring); border-radius: 10px; padding: 10px 12px; font-size: 0.86rem; background: var(--page); }
.card h4 { margin: 0 0 4px; font-size: 0.95rem; }
.nn { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.nn ol { margin: 4px 0 0; padding-left: 18px; }
.rank-row { display: grid; grid-template-columns: 13em 1fr 3em; align-items: center; gap: 8px; font-size: 0.82rem; }
.rank-bar { height: 8px; border-radius: 4px; background: var(--twin); }
.rank-bar.trained { background: var(--blue); }
.rank-row.target { font-weight: 650; }
.muted { color: var(--muted); }
footer { color: var(--ink2); font-size: 0.85rem; padding: 40px 0 60px; border-top: 1px solid var(--grid); margin-top: 60px; }
@media (max-width: 640px) { body { font-size: 15px; } figure.fig { padding: 12px 10px 8px; } .panel.tall { min-height: 340px; } }

/* how the axiom test works: step text (fixed height, so the panels do not jump between steps) and the step-1 table */
.how-text { font-size: 0.9rem; color: var(--ink2); margin: 4px 0 8px; min-height: 6.4em; }
.how-text b { color: var(--ink); }
.how-card { min-height: 420px; overflow-x: auto; }
.how-card table { font-size: 0.8rem; }
.how-card th, .how-card td { padding: 3px 6px; }
.how-card .sel { background: var(--accent-wash); color: var(--blue); font-weight: 600; }
.how-card p { margin: 8px 0 0; }
a.figref { white-space: nowrap; }

/* pinned item's row in a table view; the no-WebGL note */
tr.pinned td { background: var(--accent-wash); font-weight: 600; }
.gl-note { font-size: 0.8rem; color: var(--orange); }