/* VisionX (SignalScope UZ pipeline) write-up. Plain report layout. Colors follow the system theme unless the toggle pins one. */
:root {
  color-scheme: light dark;
  --bg: #fbfaf7;
  --fg: #1d1c1a;
  --soft: #55534e;
  --faint: #8a8781;
  --rule: #e2dfd8;
  --code-bg: #f0ede6;
  --link: #1f63b8;
  --mark: #fff1c2;
  --accent: #c2531f;
  --tile: #f3f1ec;
  --body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --ui: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171716; --fg: #ecebe6; --soft: #bdbab2; --faint: #8f8c85; --rule: #34332f;
    --code-bg: #25241f; --link: #7fb2f0; --mark: #4a3f14; --accent: #f08a5d; --tile: #21201d;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171716; --fg: #ecebe6; --soft: #bdbab2; --faint: #8f8c85; --rule: #34332f;
  --code-bg: #25241f; --link: #7fb2f0; --mark: #4a3f14; --accent: #f08a5d; --tile: #21201d;
}
:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }
html { scroll-padding-top: 64px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 18px/1.65 var(--body); }
html[data-lang="uz"] [lang="en"]:not(html), html[data-lang="en"] [lang="uz"]:not(html) { display: none !important; }

a { color: var(--link); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--bg); padding: 6px 10px; z-index: 99; }

.top {
  position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--rule);
  font: 15px/1.4 var(--ui);
}
.top-in { max-width: 1040px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 16px; align-items: center; }
.top b { white-space: nowrap; }
.top nav { flex: 1; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.top nav a { color: var(--soft); text-decoration: none; margin-right: 14px; }
.top nav a:hover, .top nav a[aria-current="true"] { color: var(--fg); text-decoration: underline; }
.top button {
  font: 14px var(--ui); background: none; color: var(--fg); border: 1px solid var(--rule); border-radius: 4px;
  padding: 3px 9px; cursor: pointer; min-height: 30px;
}

main { max-width: 1040px; margin: 0 auto; padding: 0 16px 40px; }
.text { max-width: 700px; }
section { padding: 36px 0 12px; }
.later { content-visibility: auto; contain-intrinsic-size: auto none auto 1000px; }
h1 { font: 700 2.4rem/1.15 var(--ui); letter-spacing: -0.01em; margin: 40px 0 6px; }
h2 { font: 700 1.5rem/1.3 var(--ui); margin: 12px 0 10px; }
h3 { font: 600 1.1rem/1.3 var(--ui); margin: 26px 0 6px; }
p, li { color: var(--fg); }
.sub { color: var(--soft); font-size: 1.1rem; margin-top: 0; }
.byline { font: 14px var(--ui); color: var(--faint); }
.big { font: 600 1.05rem var(--ui); }
.big mark { background: var(--mark); color: inherit; padding: 0 3px; }
small, .note { color: var(--soft); font-size: 0.9em; }
code, .mono { font-family: var(--mono); font-size: 0.85em; }
code { background: var(--code-bg); padding: 1px 4px; border-radius: 3px; }
pre.flow { font: 14px/1.5 var(--mono); background: var(--code-bg); padding: 12px 14px; overflow-x: auto; border-radius: 4px; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 8px 0; }

figure.fig { margin: 22px 0 30px; }
figure.fig .plot { width: 100%; min-height: 360px; }
figure.fig .plot img { width: 100%; height: auto; }
figure.fig figcaption { font: 15px/1.55 var(--ui); color: var(--soft); max-width: 760px; margin-top: 6px; }
figure.fig figcaption b { color: var(--fg); }

table { border-collapse: collapse; font: 15px/1.45 var(--ui); margin: 12px 0; }
th, td { text-align: left; padding: 6px 14px 6px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--soft); }
td.n { font-family: var(--mono); font-size: 14px; white-space: nowrap; }
.wide { overflow-x: auto; }

ul.notes, ol.notes { padding-left: 1.2em; }
ol.notes li { margin: 0 0 12px; }
ol.notes .why { display: block; font: 14px/1.5 var(--ui); color: var(--soft); }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
svg.er { width: 100%; max-width: 480px; height: auto; }
svg.er rect { fill: none; stroke: var(--soft); }
svg.er text { fill: var(--fg); font: 13px var(--mono); }
svg.er .d { fill: var(--faint); }
svg.er line, svg.er path { stroke: var(--soft); fill: none; }

footer { max-width: 1040px; margin: 0 auto; padding: 18px 16px 40px; border-top: 1px solid var(--rule); font: 14px var(--ui); color: var(--faint); }

/* overview hero + KPI tiles */
.hero { padding-top: 8px; }
.eyebrow { font: 600 13px/1.4 var(--ui); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin: 36px 0 0; }
.hero h1 { margin-top: 8px; }
.team-badge { display: inline-block; margin: 2px 0 10px; padding: 3px 10px; border: 1px solid var(--accent); border-radius: 6px;
  font: 600 13px/1.6 var(--ui); letter-spacing: .06em; text-transform: uppercase; color: var(--soft); }
.team-badge b { color: var(--accent); font: 700 15px/1.6 var(--mono); letter-spacing: .04em; margin-left: 6px; }
.top .tid { font-weight: 400; color: var(--soft); font-family: var(--mono); font-size: 13px; }
.hero .dash { color: var(--faint); font-weight: 400; }
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 22px 0 14px; }
.kpi { background: var(--tile); border: 1px solid var(--rule); border-radius: 8px; padding: 12px 14px; }
.kpi dt { font: 13px/1.3 var(--ui); color: var(--soft); }
.kpi dd { margin: 4px 0 0; font: 700 1.6rem/1.2 var(--ui); font-variant-numeric: tabular-nums; }
.kpi.accent dd { color: var(--accent); }
.kpis.small .kpi dd { font-size: 1.3rem; }
.kpi dd.muted, .kpis.small .kpi dd.muted { font: 600 1rem/1.4 var(--ui); color: var(--soft); padding-top: 6px; }
.result { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 22px 0 0; }
.r-main { display: flex; flex-direction: column; border: 2px solid var(--accent); border-radius: 10px; padding: 14px 18px; }
.r-label { font: 600 13px/1.3 var(--ui); letter-spacing: .05em; text-transform: uppercase; color: var(--soft); }
.r-model, .r-auc { font: 700 2.3rem/1.15 var(--ui); margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.r-auc { color: var(--accent); }
.r-sub { font: 14px/1.4 var(--ui); color: var(--soft); }
tr.total td { border-top: 2px solid var(--rule); }

/* numbered section headings */
h2 .num {
  display: inline-block; min-width: 1.7em; margin-right: 10px; padding: 0 6px; border-radius: 5px;
  background: var(--fg); color: var(--bg); font-size: 0.8em; text-align: center; vertical-align: 2px;
}

/* chart blocks: title, takeaway, figure */
.chart { margin-top: 30px; }
.chart > h3 { margin-bottom: 4px; }
.chart .lead { max-width: 760px; margin: 0 0 4px; font: 600 1rem/1.5 var(--ui); }
.chart figure.fig { margin-top: 8px; }

details.more { margin: 26px 0 8px; border: 1px solid var(--rule); border-radius: 8px; padding: 4px 16px; }
details.more > summary { cursor: pointer; font: 600 15px/2.4 var(--ui); color: var(--link); }
details.more[open] > summary { border-bottom: 1px solid var(--rule); margin-bottom: 4px; }

ol.notes .q { display: block; font-family: var(--ui); }

/* feature-engineering pipeline */
ol.flowline { list-style: none; padding: 0; margin: 18px 0; display: flex; gap: 0; flex-wrap: wrap; font-family: var(--ui); }
ol.flowline li { flex: 1 1 150px; position: relative; background: var(--tile); border: 1px solid var(--rule); border-radius: 8px;
  padding: 10px 12px; margin: 0 22px 10px 0; font-size: 15px; }
ol.flowline li b { display: block; }
ol.flowline li small { display: block; color: var(--soft); font-size: 13px; }
ol.flowline li:not(:last-child)::after { content: "→"; position: absolute; right: -18px; top: 50%; transform: translateY(-50%); color: var(--faint); }
ol.flowline li:last-child { border-color: var(--accent); margin-right: 0; }

ul.models li { margin-bottom: 4px; }
.callout { border-left: 3px solid var(--accent); background: var(--tile); padding: 10px 14px; border-radius: 0 6px 6px 0; font: 15px/1.55 var(--ui); }

@media (max-width: 760px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi dd { font-size: 1.3rem; }
  .result { grid-template-columns: 1fr; }
  .r-model, .r-auc { font-size: 1.9rem; }
  ol.flowline { flex-direction: column; }
  ol.flowline li { margin-right: 0; margin-bottom: 18px; }
  ol.flowline li:not(:last-child)::after { content: "↓"; right: auto; left: 50%; top: auto; bottom: -19px; transform: none; }
  body { font-size: 17px; }
  .two { grid-template-columns: 1fr; }
  h1 { font-size: 1.9rem; margin-top: 24px; }
  .top-in { flex-wrap: wrap; gap: 8px 12px; }
  .top nav { order: 3; flex-basis: 100%; }
  figure.fig .plot { min-height: 300px; }
}