@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');

/* ---------------------------------------------------------------------------
   Tokens. Dark-first: the bare :root values ARE the dark palette. A system
   light preference overrides them unless an explicit [data-theme] is set,
   and an explicit [data-theme] always wins over everything. See theme.js.
--------------------------------------------------------------------------- */
:root {
  --bg: #020617;
  --surface: #0e1223;
  --surface-2: #171c30;
  --surface-3: #222a42;
  --text: #f8fafc;
  --muted: #94a3b8;
  --muted-2: #64748b;
  --line: #2a3350;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.14);
  --bad: #f87171;
  --bad-soft: rgba(248, 113, 113, 0.14);
  --warn: #f59e0b;
  --warn-soft: rgba(245, 158, 11, 0.14);
  --blue: #60a5fa;
  --blue-soft: rgba(96, 165, 250, 0.14);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --mono: "Fira Code", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f4f6fb;
    --surface: #ffffff;
    --surface-2: #eef1f8;
    --surface-3: #e2e8f4;
    --text: #0f172a;
    --muted: #59627a;
    --muted-2: #7c8598;
    --line: #dbe1ee;
    --accent: #16a34a;
    --accent-soft: rgba(22, 163, 74, 0.1);
    --bad: #dc2626;
    --bad-soft: rgba(220, 38, 38, 0.1);
    --warn: #b45309;
    --warn-soft: rgba(180, 83, 9, 0.1);
    --blue: #2563eb;
    --blue-soft: rgba(37, 99, 235, 0.1);
    --shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
    color-scheme: light;
  }
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --surface-3: #e2e8f4;
  --text: #0f172a;
  --muted: #59627a;
  --muted-2: #7c8598;
  --line: #dbe1ee;
  --accent: #16a34a;
  --accent-soft: rgba(22, 163, 74, 0.1);
  --bad: #dc2626;
  --bad-soft: rgba(220, 38, 38, 0.1);
  --warn: #b45309;
  --warn-soft: rgba(180, 83, 9, 0.1);
  --blue: #2563eb;
  --blue-soft: rgba(37, 99, 235, 0.1);
  --shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #020617;
  --surface: #0e1223;
  --surface-2: #171c30;
  --surface-3: #222a42;
  --text: #f8fafc;
  --muted: #94a3b8;
  --muted-2: #64748b;
  --line: #2a3350;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.14);
  --bad: #f87171;
  --bad-soft: rgba(248, 113, 113, 0.14);
  --warn: #f59e0b;
  --warn-soft: rgba(245, 158, 11, 0.14);
  --blue: #60a5fa;
  --blue-soft: rgba(96, 165, 250, 0.14);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  /* Giving html its own explicit background avoids the CSS root-background-propagation rule
     (when html has no background, body's background paints the canvas instead, as a special
     case) -- with this, body's background is a normal box-model background like any other
     element, which is what makes it recompute promptly on a dynamic [data-theme] change. */
  background-color: var(--bg);
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font: 15.5px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  transition: background-color 150ms ease, color 150ms ease;
  overflow-x: hidden;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.mono { font-family: var(--mono); font-size: 0.94em; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------------------------------------------------------------------------
   Top bar: brand + page nav + theme toggle. Sticky, shared by both pages.
--------------------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  max-width: 1080px;
  margin: 0 auto;
  /* Flex items default to min-width: auto, which lets a nowrap child (the nav) refuse to
     shrink below its own unwrapped content width and push the whole bar past the viewport
     at narrow widths. min-width: 0 here lets the browser's own overflow-x: auto on .topnav
     do its job instead of silently widening this container. */
  min-width: 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16px;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  display: inline-flex; align-items: center; justify-content: center;
  color: #06120a;
  font-size: 14px;
}
.topnav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
  min-width: 0; /* the actual fix: let this flex item shrink below its nowrap content's
                   width so overflow-x: auto handles it internally instead of the whole
                   topbar pushing past the viewport */
  overflow-x: auto;
}
.topnav a {
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.topnav a:hover { color: var(--text); text-decoration: none; background: var(--surface-2); }
.topnav a[aria-current="page"] { color: var(--text); background: var(--surface-2); }

.theme-toggle {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--surface-2); }
.theme-toggle svg { width: 16px; height: 16px; }

/* ---------------------------------------------------------------------------
   Hero
--------------------------------------------------------------------------- */
.hero { padding: 40px 0 28px; }
.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--accent);
}
h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.lede { margin: 0 0 24px; font-size: 16px; color: var(--muted); max-width: 66ch; }
.cross-link { margin-top: 14px; color: var(--muted); font-size: 13.5px; }

.answer {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.answer-label {
  margin: 0 0 6px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.answer-body { margin: 0; font-size: 16.5px; line-height: 1.55; }
.answer-body strong { color: var(--accent); }

main { padding: 8px 0 56px; }
section { margin: 44px 0; }
section.section-first { margin-top: 0; }

h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
h3 { font-size: 15.5px; font-weight: 700; margin: 20px 0 8px; }
p { max-width: 70ch; color: var(--text); }
.section-intro { color: var(--muted); margin: 10px 0 16px; max-width: 70ch; font-size: 14.5px; }
.note { color: var(--muted); font-size: 13.5px; }

/* ---------------------------------------------------------------------------
   Stat grid / cards
--------------------------------------------------------------------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin: 16px 0;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.card .k { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.card .v { font-size: 19px; font-weight: 700; font-family: var(--mono); margin-top: 5px; }

.stat-empty { color: var(--muted); font-style: italic; font-size: 13.5px; }

/* ---------------------------------------------------------------------------
   Finding cards (price / volatility / calibration, at-a-glance)
--------------------------------------------------------------------------- */
.finding-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.finding-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--muted-2);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.finding-card.good { border-left-color: var(--accent); }
.finding-card.bad { border-left-color: var(--bad); }
.finding-card .finding-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.finding-card .finding-headline {
  font-size: 20px;
  font-weight: 800;
  font-family: var(--mono);
  margin: 6px 0 4px;
}
.finding-card.good .finding-headline { color: var(--accent); }
.finding-card.bad .finding-headline { color: var(--bad); }
.finding-card .finding-note { font-size: 13px; color: var(--muted); line-height: 1.5; }

/* ---------------------------------------------------------------------------
   Tables
--------------------------------------------------------------------------- */
.tablewrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: var(--radius-sm); }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { padding: 9px 12px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-weight: 700; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
     background: var(--surface-2); position: sticky; top: 0; }
th:first-child, td:first-child { text-align: left; font-family: var(--mono); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }
td.num { font-family: var(--mono); }
td.pos, .pos { color: var(--accent); }
td.neg, .neg { color: var(--bad); }
tfoot td { font-weight: 700; border-top: 2px solid var(--line); border-bottom: none; }

/* ---------------------------------------------------------------------------
   Badges
--------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
  vertical-align: middle;
}
.badge-live { color: var(--accent); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); }
.badge-backtest { color: var(--muted); background: var(--surface-2); border: 1px solid var(--line); }
.badge-model { background: var(--surface-3); color: var(--text); border: 1px solid var(--line); }
.badge-good { color: var(--accent); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); }
.badge-bad { color: var(--bad); background: var(--bad-soft); border: 1px solid color-mix(in srgb, var(--bad) 45%, transparent); }

/* ---------------------------------------------------------------------------
   Muted / secondary panel (backtest section)
--------------------------------------------------------------------------- */
.muted-panel {
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 6px;
}
.muted-panel h2 { border-bottom-color: transparent; }
.muted-panel .grid .card { background: var(--surface-2); }

/* ---------------------------------------------------------------------------
   Ticker cards (open predictions, grouped)
--------------------------------------------------------------------------- */
.ticker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.ticker-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px 16px;
  transition: border-color 150ms ease, transform 150ms ease;
}
.ticker-card:hover { border-color: var(--muted-2); }
.ticker-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 2px;
}
.ticker-symbol { font-family: var(--mono); font-weight: 700; font-size: 16px; }
.ticker-days { font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.ticker-target { font-size: 11.5px; color: var(--muted-2); margin-bottom: 10px; }

.range-row { display: flex; align-items: center; gap: 8px; margin: 7px 0; }
.range-label {
  width: 74px;
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.range-track {
  position: relative;
  flex: 1;
  height: 20px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}
.range-fill {
  position: absolute;
  top: 3px;
  bottom: 3px;
  border-radius: 999px;
  opacity: 0.85;
}
.range-point {
  position: absolute;
  top: 1px;
  bottom: 1px;
  width: 2px;
  background: var(--text);
}
.range-values {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  margin-top: 2px;
}
.range-abstained {
  font-size: 11.5px;
  color: var(--muted);
  font-style: italic;
  padding: 3px 0;
}

/* ---------------------------------------------------------------------------
   Calibration rows (nominal vs actual coverage, before/after)
--------------------------------------------------------------------------- */
.calib-block { margin: 18px 0 28px; }
.calib-block:last-child { margin-bottom: 0; }
.calib-block-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 8px;
}
.calib-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin: 10px 0; }
.calib-tag {
  width: 56px;
  flex-shrink: 0;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--muted);
}
.calib-track {
  position: relative;
  flex: 1 1 120px;
  height: 28px;
  background: var(--surface-2);
  border-radius: 6px;
  min-width: 0;
}
.calib-band {
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--accent-soft);
  border-radius: 6px;
}
.calib-nominal {
  position: absolute;
  top: -5px;
  bottom: -5px;
  width: 2px;
  background: var(--text);
  opacity: 0.55;
}
.calib-dot {
  position: absolute;
  top: 50%;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--surface);
  transform: translate(-50%, -50%);
}
.calib-dot.before { background: var(--muted-2); }
.calib-dot.after { background: var(--accent); }
.calib-readout {
  flex: 1 1 180px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-align: left;
}
.calib-readout strong { color: var(--text); font-size: 13px; }
.calib-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}
.calib-legend span { display: inline-flex; align-items: center; gap: 6px; }
.calib-legend .swatch { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }

/* ---------------------------------------------------------------------------
   Chart controls / legend
--------------------------------------------------------------------------- */
.chart-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: 14px 0;
}
.chart-controls label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.chart-controls select {
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  min-height: 38px;
  cursor: pointer;
}

.chart {
  margin: 16px 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  /* An <svg> with only a viewBox (no explicit width/height) can report its viewBox size as
     its LAYOUT-intrinsic width for scrollWidth/overflow purposes even while it PAINTS
     correctly at width:100% below — a real cross-browser quirk, not a false positive. This
     clips that phantom width at the container instead of letting it silently widen the page. */
  overflow-x: hidden;
}
.chart svg { width: 100%; height: auto; display: block; }

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 10px 0 2px;
  font-size: 12.5px;
  color: var(--muted);
}
.chart-legend span { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend .swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; flex-shrink: 0; }

/* sparkline inline in tables/cards */
.spark { display: block; }

/* ---------------------------------------------------------------------------
   Tabs (How it works, etc.)
--------------------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
  overflow-x: auto;
}
.tab-btn {
  appearance: none;
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  font-size: 13.5px;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.hiw-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 14px;
}
.hiw-block h3 { margin-top: 0; }
.hiw-block p { color: var(--muted); font-size: 14px; }
.hiw-block p strong { color: var(--text); }

/* ---------------------------------------------------------------------------
   Callouts / code
--------------------------------------------------------------------------- */
.callout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 16px 0;
  font-size: 15px;
}
.disclaimer ul { max-width: 70ch; padding-left: 20px; }
.disclaimer li { margin-bottom: 8px; color: var(--muted); }
.disclaimer li strong { color: var(--text); }

.code {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
}

footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 40px;
  color: var(--muted);
  font-size: 13px;
}