@import "tailwindcss";
@import "tw-animate-css";

@custom-variant dark (&:is(.dark *));

/* ============================================================
   EvalEval Coalition — Design Tokens (paper-aligned).
   Source of truth: extracted from evaleval/evaleval.github.io.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  /* Surfaces — warm off-whites */
  --bg: #ffffff;
  --bg-warm: #faf9f6;
  --bg-subtle: #f5f4f1;
  --bg-surface: #eeece8;

  /* Foreground — near-black with warm undertone */
  --fg: #1a1916;
  --fg-muted: #5c5a55;
  --fg-subtle: #9c9a95;

  /* Borders */
  --border-soft: #e8e6e1;
  --border-strong: #c8c6c0;

  /* Accent — brand blue */
  --accent: #5bacd1;
  --accent-hover: #4a9bb8;
  --accent-fg: #ffffff;

  /* Chrome */
  --nav-bg: rgba(255, 255, 254, 0.95);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.07);

  /* Tracking */
  --tracking-wide: 0.025em;
  --tracking-widest: 0.15em;
  --tracking-tight: -0.03em;

  /* shadcn/ui mapping — kept so existing components keep working */
  --background: var(--bg);
  --foreground: var(--fg);
  --card: var(--bg);
  --card-foreground: var(--fg);
  --popover: var(--bg);
  --popover-foreground: var(--fg);
  --primary: var(--fg);
  --primary-foreground: var(--bg);
  --secondary: var(--bg-surface);
  --secondary-foreground: var(--fg);
  --muted: var(--bg-subtle);
  --muted-foreground: var(--fg-muted);
  --accent-bg: var(--bg-surface);
  --accent-foreground: var(--fg);
  --destructive: #b1422f;
  --destructive-foreground: #ffffff;
  --border: var(--border-soft);
  --input: var(--border-strong);
  --ring: var(--accent);
  --chart-1: var(--accent);
  --chart-2: #22c55e;
  --chart-3: #eab308;
  --chart-4: #f97316;
  --chart-5: #ef4444;
  --radius: 0.25rem;
  --sidebar: var(--bg-warm);
  --sidebar-foreground: var(--fg);
  --sidebar-primary: var(--fg);
  --sidebar-primary-foreground: var(--bg);
  --sidebar-accent: var(--bg-surface);
  --sidebar-accent-foreground: var(--fg);
  --sidebar-border: var(--border-soft);
  --sidebar-ring: var(--accent);

  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-heading: var(--font-sans);
}

.dark {
  --bg: #111110;
  --bg-warm: #141412;
  --bg-subtle: #1a1916;
  --bg-surface: #252420;
  --fg: #f0ede8;
  --fg-muted: #a09d97;
  --fg-subtle: #5c5a55;
  --border-soft: #2e2c28;
  --border-strong: #484540;
  --accent: #7dc3e0;
  --accent-hover: #9dd3ec;
  --accent-fg: #111110;
  --nav-bg: rgba(17, 17, 16, 0.96);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.5);

  --background: var(--bg);
  --foreground: var(--fg);
  --card: var(--bg);
  --card-foreground: var(--fg);
  --popover: var(--bg);
  --popover-foreground: var(--fg);
  --primary: var(--fg);
  --primary-foreground: var(--bg);
  --secondary: var(--bg-surface);
  --secondary-foreground: var(--fg);
  --muted: var(--bg-subtle);
  --muted-foreground: var(--fg-muted);
  --accent-bg: var(--bg-surface);
  --accent-foreground: var(--fg);
  --border: var(--border-soft);
  --input: var(--border-strong);
  --ring: var(--accent);
  --sidebar: var(--bg-warm);
  --sidebar-foreground: var(--fg);
  --sidebar-primary: var(--fg);
  --sidebar-primary-foreground: var(--bg);
  --sidebar-accent: var(--bg-surface);
  --sidebar-accent-foreground: var(--fg);
  --sidebar-border: var(--border-soft);
  --sidebar-ring: var(--accent);
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent-bg);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);
  --color-chart-1: var(--chart-1);
  --color-chart-2: var(--chart-2);
  --color-chart-3: var(--chart-3);
  --color-chart-4: var(--chart-4);
  --color-chart-5: var(--chart-5);
  --radius-sm: calc(var(--radius) - 1px);
  --radius-md: var(--radius);
  --radius-lg: calc(var(--radius) + 2px);
  --radius-xl: calc(var(--radius) + 6px);
  --color-sidebar: var(--sidebar);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-ring: var(--sidebar-ring);
  --font-heading: var(--font-heading);
  --font-sans: var(--font-sans);
  --font-mono: var(--font-mono);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  body {
    @apply bg-background text-foreground antialiased;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.5;
  }
  ::selection {
    background-color: var(--accent);
    color: var(--accent-fg);
  }
}

/* ============================================================
   Design-system component classes
   (named to match the EvalEval prototype so future components
   can be ported verbatim where it makes sense)
   ============================================================ */

@layer components {

  /* Kicker — the ubiquitous mono uppercase label */
  .kicker {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-subtle);
    font-weight: 400;
  }
  .kicker-fg { color: var(--fg); }
  .kicker-accent { color: var(--accent); }

  /* Topbar */
  .ec-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--nav-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-soft);
  }
  .ec-topbar-inner {
    max-width: 96rem;
    margin: 0 auto;
    height: 64px;
    padding: 0 32px;
    display: flex;
    align-items: center;
    gap: 32px;
  }
  .ec-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--fg);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: -0.01em;
  }
  .ec-brand:hover { color: var(--fg); }
  .ec-brand-mark {
    width: 28px;
    height: 28px;
    background: var(--accent);
    display: grid;
    place-items: center;
    color: white;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 0.02em;
    border-radius: 2px;
  }
  .ec-brand-sub {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-subtle);
    padding-left: 12px;
    margin-left: 4px;
    border-left: 1px solid var(--border-soft);
  }

  .ec-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
  }
  .ec-nav-links a {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg-muted);
    padding: 8px 12px;
    transition: color 0.2s ease;
    position: relative;
  }
  .ec-nav-links a:hover { color: var(--fg); }
  .ec-nav-links a.active { color: var(--fg); }
  .ec-nav-links a.active::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 2px;
    height: 1.5px;
    background: var(--accent);
  }

  .ec-mode-toggle {
    display: inline-flex;
    align-items: center;
    padding: 3px;
    border: 1px solid var(--border-soft);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: var(--bg);
  }
  .ec-mode-toggle button {
    background: transparent;
    border: 0;
    padding: 6px 14px;
    color: var(--fg-muted);
    font-family: inherit;
    font-size: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .ec-mode-toggle button.on {
    background: var(--fg);
    color: var(--bg);
  }
  .ec-mode-toggle button:not(.on):hover { color: var(--fg); }
  .ec-mode-toggle-label {
    display: inline-flex;
    align-items: center;
    padding: 0 10px 0 6px;
    color: var(--fg-subtle);
  }

  .ec-icon-btn {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    background: transparent;
    border: 1px solid var(--border-soft);
    color: var(--fg-muted);
    transition: all 0.2s ease;
    cursor: pointer;
  }
  .ec-icon-btn:hover {
    color: var(--fg);
    border-color: var(--border-strong);
  }

  /* Reader-mode banner — non-sticky so it scrolls away with the hero */
  .mode-banner {
    position: relative;
    z-index: 1;
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg-warm);
  }
  .mode-banner.mode-policy {
    background: var(--fg);
    border-bottom-color: var(--fg);
  }
  .mode-banner-inner {
    max-width: 96rem;
    margin: 0 auto;
    padding: 8px 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
  }
  .mode-banner-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--fg);
    padding: 3px 9px;
    border: 1px solid var(--fg);
    background: var(--bg);
  }
  .mode-banner.mode-policy .mode-banner-tag {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg);
  }
  .mode-banner-text { color: var(--fg-muted); line-height: 1.4; }
  .mode-banner.mode-policy .mode-banner-text { color: rgba(240, 237, 232, 0.78); }
  .mode-banner-dot { color: var(--fg-subtle); }
  .mode-banner.mode-policy .mode-banner-dot { color: rgba(240, 237, 232, 0.4); }
  .mode-banner-spacer { flex: 1; }
  .mode-banner-meta {
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg-subtle);
  }
  .mode-banner.mode-policy .mode-banner-meta { color: rgba(240, 237, 232, 0.5); }

  /* Buttons (squared / mono caps — primary product CTA) */
  .btn-ec {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 600;
    border: 1.5px solid var(--fg);
    background: var(--fg);
    color: var(--bg);
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .btn-ec:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
  }
  .btn-ec.outline {
    background: transparent;
    color: var(--fg);
    border-color: var(--border-strong);
  }
  .btn-ec.outline:hover {
    background: var(--bg-surface);
    color: var(--fg);
    border-color: var(--border-strong);
  }
  .btn-ec.ghost {
    background: transparent;
    border-color: transparent;
    color: var(--fg-muted);
  }
  .btn-ec.ghost:hover {
    background: var(--bg-surface);
    color: var(--fg);
  }

  /* Home hero */
  .home-hero {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 64px;
    align-items: start;
    margin-bottom: 80px;
  }
  .home-hero-h1 {
    font-size: clamp(48px, 5.6vw, 76px);
    line-height: 1.02;
    letter-spacing: -0.035em;
    font-weight: 700;
    color: var(--fg);
    margin: 14px 0 24px;
  }
  .accent-em {
    font-style: italic;
    color: var(--accent);
    font-weight: 700;
  }
  .home-hero-lede {
    font-size: 18px;
    line-height: 1.6;
    color: var(--fg-muted);
    margin: 0 0 32px;
    max-width: 560px;
  }
  .home-hero-lede strong { color: var(--fg); font-weight: 600; }

  /* Corpus card */
  .corpus-meta {
    border: 1px solid var(--border-soft);
    background: var(--bg-warm);
    padding: 28px;
  }
  .corpus-meta .kicker {
    display: block;
    margin-bottom: 20px;
  }
  .corpus-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 32px;
  }
  .corpus-stat-n {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 30px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--fg);
    line-height: 1;
  }
  .corpus-stat-l {
    font-size: 13px;
    font-weight: 600;
    color: var(--fg);
    margin-top: 6px;
  }
  .corpus-stat-sub {
    font-size: 11px;
    margin-top: 2px;
    line-height: 1.4;
    color: var(--fg-subtle);
  }

  /* Hierarchy strip */
  .hierarchy-strip {
    border-top: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    padding: 32px 0;
    margin-bottom: 80px;
  }
  .hierarchy-strip .kicker {
    display: block;
    margin-bottom: 18px;
  }
  .hierarchy-row {
    display: flex;
    align-items: stretch;
    gap: 8px;
    margin-bottom: 14px;
  }
  .hierarchy-node {
    flex: 1;
    border: 1px solid var(--border-soft);
    background: var(--bg);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
  }
  .hier-num {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.2em;
    color: var(--accent);
    font-weight: 600;
  }
  .hier-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--fg);
  }
  .hier-count {
    font-family: var(--font-mono);
    font-size: 18px;
    font-variant-numeric: tabular-nums;
    color: var(--fg);
    margin-top: 4px;
  }
  .hier-ex {
    font-size: 11px;
    margin-top: 2px;
    color: var(--fg-subtle);
  }
  .hier-arrow {
    color: var(--fg-subtle);
    align-self: center;
    font-family: var(--font-mono);
    font-size: 14px;
  }
  .hierarchy-note {
    font-size: 12px;
    color: var(--fg-muted);
    font-style: italic;
    margin: 12px 0 0;
  }

  /* Section head */
  .section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--fg);
    padding-bottom: 8px;
    margin-bottom: 24px;
  }
  .section-head h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--fg);
  }

  /* Signals section header */
  .signals-section {
    border-top: 1px solid var(--fg);
    padding-top: 36px;
    margin-bottom: 96px;
  }
  .signals-h2 {
    font-size: 38px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 700;
    margin: 8px 0 12px;
    color: var(--fg);
  }
  .signals-lede {
    font-size: 15px;
    color: var(--fg-muted);
    line-height: 1.65;
    max-width: 720px;
    margin: 0 0 36px;
  }
  .signals-lede em { color: var(--fg); font-style: normal; font-weight: 600; }

  /* Signals grid (corpus rollup) */
  .signals-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--border-soft);
    border-left: 1px solid var(--border-soft);
  }
  .sig-tile {
    border-right: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg);
    transition: background 0.2s ease;
  }
  .sig-tile:hover { background: var(--bg-warm); }
  .sig-tile-head {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .sig-tile-name {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg);
    font-weight: 600;
  }
  .sig-tile-stat {
    display: flex;
    align-items: baseline;
    gap: 4px;
  }
  .sig-tile-num {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 56px;
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--fg);
  }
  .sig-tile-unit {
    font-family: var(--font-mono);
    font-size: 22px;
    color: var(--fg-muted);
  }
  .sig-tile-headline {
    font-size: 13px;
    line-height: 1.5;
    color: var(--fg);
    margin: 0;
  }
  .sig-tile-detail {
    font-size: 11.5px;
    line-height: 1.5;
    margin: 0;
    color: var(--fg-subtle);
  }
  .sig-tile-asks {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px dashed var(--border-soft);
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .sig-tile-asks-text {
    font-size: 12px;
    font-style: italic;
    color: var(--fg-muted);
    line-height: 1.45;
  }

  /* Signal glyph (R / C / P / X) */
  .sig-glyph {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 600;
    flex-shrink: 0;
    border: 1.5px solid currentColor;
  }
  .sig-glyph span {
    line-height: 1;
    transform: translateY(-1px);
  }
  .sig-reproducibility { color: oklch(0.55 0.13 240); }
  .sig-completeness { color: oklch(0.55 0.13 165); }
  .sig-provenance { color: oklch(0.55 0.13 50); }
  .sig-comparability { color: oklch(0.55 0.13 320); }
  .dark .sig-reproducibility { color: oklch(0.78 0.13 240); }
  .dark .sig-completeness { color: oklch(0.78 0.13 165); }
  .dark .sig-provenance { color: oklch(0.78 0.13 50); }
  .dark .sig-comparability { color: oklch(0.78 0.13 320); }

  /* Family card grid */
  .fam-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--border-soft);
    border-left: 1px solid var(--border-soft);
  }
  .fam-card {
    border-right: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg);
    padding: 24px;
    cursor: pointer;
    transition: background 0.2s ease;
  }
  .fam-card:hover { background: var(--bg-warm); }
  .fam-card-kind {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--fg-subtle);
    text-transform: uppercase;
  }
  .fam-card-counts {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--fg-subtle);
  }
  .fam-card-name {
    font-size: 22px;
    margin: 0 0 6px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--fg);
  }
  .fam-card-org {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
    color: var(--fg-subtle);
  }
  .fam-card-summary {
    font-size: 13px;
    color: var(--fg-muted);
    line-height: 1.6;
    margin: 0;
  }

  /* Micro-meta link (top-right of section heads) */
  .micro-meta-link {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-muted);
    transition: color 0.2s ease;
  }
  .micro-meta-link:hover { color: var(--accent); }

  /* Page shell — applied to every page <main> */
  .ec-page {
    flex: 1;
    max-width: 96rem;
    margin: 0 auto;
    padding: 48px 32px 96px;
    width: 100%;
  }

  /* Page header — used by every non-home page */
  .ec-page-h1 {
    font-size: clamp(36px, 4.4vw, 52px);
    line-height: 1.04;
    letter-spacing: -0.03em;
    font-weight: 700;
    color: var(--fg);
    margin: 8px 0 12px;
  }
  .ec-page-lede {
    font-size: 16px;
    line-height: 1.65;
    color: var(--fg-muted);
    max-width: 720px;
    margin: 0 0 28px;
  }
  .ec-page-lede strong { color: var(--fg); font-weight: 600; }
  .ec-page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 1px solid var(--border-soft);
    padding-top: 16px;
    margin-top: 4px;
  }
  .ec-page-meta-item {
    border: 1px solid var(--border-soft);
    background: var(--bg);
    padding: 6px 10px;
    display: flex;
    align-items: baseline;
    gap: 8px;
  }
  .ec-page-meta-item-l {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--fg-subtle);
  }
  .ec-page-meta-item-v {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--fg);
  }

  /* Breadcrumb */
  .ec-crumb {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-muted);
    transition: color 0.2s ease;
  }
  .ec-crumb:hover { color: var(--fg); }

  /* Hairline table */
  .ec-htable {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
  }
  .ec-htable th,
  .ec-htable td {
    text-align: left;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-soft);
    vertical-align: middle;
  }
  .ec-htable th {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg-subtle);
    font-weight: 500;
    border-bottom: 1px solid var(--fg);
    padding-top: 10px;
    padding-bottom: 10px;
    background: var(--bg);
  }
  .ec-htable tbody tr {
    transition: background 0.2s ease;
  }
  .ec-htable tbody tr:hover { background: var(--bg-warm); }
  .ec-htable td.num,
  .ec-htable th.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
  }

  /* Hairline data list (definition-style) */
  .ec-datalist {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0;
    font-size: 14px;
  }
  .ec-datalist dt {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg-subtle);
    padding: 10px 24px 10px 0;
    border-bottom: 1px solid var(--border-soft);
    white-space: nowrap;
    align-self: center;
  }
  .ec-datalist dd {
    margin: 0;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-soft);
    color: var(--fg);
  }

  /* Hairline card */
  .ec-card {
    border: 1px solid var(--border-soft);
    background: var(--bg);
    padding: 24px;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
  }
  .ec-card.hover-lift:hover {
    box-shadow: var(--shadow-card);
    border-color: var(--border-strong);
  }
  .ec-card.warm { background: var(--bg-warm); }

  /* Squared select / input — replaces shadcn pills on the chrome layer */
  .ec-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-strong);
    background: var(--bg);
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--fg);
    border-radius: 0;
    transition: border-color 0.2s ease;
  }
  .ec-input:focus {
    outline: none;
    border-color: var(--fg);
  }
  .ec-select {
    padding: 9px 12px;
    border: 1px solid var(--border-soft);
    background: var(--bg);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg);
    border-radius: 0;
    cursor: pointer;
  }

  /* Tag — hairline pill (slightly rounded for legibility) */
  .ec-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    background: var(--bg-surface);
    color: var(--fg-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 500;
    border-radius: 2px;
  }
  .ec-tag.outline {
    background: transparent;
    border: 1px solid var(--border-soft);
  }
  .ec-tag.accent {
    background: var(--accent);
    color: white;
  }

  /* Filter pill row (mono-caps, square corners) */
  .ec-pill {
    padding: 6px 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: transparent;
    color: var(--fg-muted);
    border: 1px solid var(--border-soft);
    border-radius: 0;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .ec-pill:hover { color: var(--fg); border-color: var(--border-strong); }
  .ec-pill.on {
    background: var(--fg);
    color: var(--bg);
    border-color: var(--fg);
  }

  /* Coverage matrix legend */
  .ec-legend {
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-subtle);
    flex-wrap: wrap;
  }
  .ec-legend-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 6px;
    vertical-align: middle;
  }

  /* Mobile responsive */
  @media (max-width: 1100px) {
    .home-hero { grid-template-columns: 1fr; gap: 48px; }
    .signals-grid { grid-template-columns: repeat(2, 1fr); }
    .fam-grid { grid-template-columns: repeat(2, 1fr); }
    .corpus-grid { grid-template-columns: repeat(3, 1fr); }
    .hierarchy-row { flex-wrap: wrap; }
    .hier-arrow { display: none; }
  }
  @media (max-width: 860px) {
    .ec-topbar-inner { flex-wrap: wrap; gap: 12px; padding: 10px 16px; height: auto; }
    .ec-brand-sub { display: none; }
    .ec-nav-links {
      margin-left: 0;
      order: 3;
      width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      flex-wrap: nowrap;
    }
    .ec-nav-links a { padding: 6px 8px; font-size: 11px; white-space: nowrap; }
    .ec-mode-toggle button { padding: 5px 9px; font-size: 10px; }
    .mode-banner { top: 0; position: relative; }
    .mode-banner-inner {
      padding: 8px 16px;
      flex-wrap: wrap;
      gap: 6px 10px;
    }
    .mode-banner-text { flex-basis: 100%; font-size: 11px; line-height: 1.45; }
    .mode-banner-meta { font-size: 9px; }
    .home-hero-h1 { font-size: clamp(34px, 9vw, 48px); margin: 10px 0 16px; }
    .home-hero-lede { font-size: 15px; margin-bottom: 22px; }
    .corpus-meta { padding: 18px; }
    .corpus-stat-n { font-size: 24px; }
    .signals-h2 { font-size: 28px; }
    .sig-tile { padding: 16px; }
    .sig-tile-num { font-size: 40px; }
    .sig-tile-unit { font-size: 18px; }
    .fam-card { padding: 18px; }
    .fam-card-name { font-size: 18px; }
    .hierarchy-row { flex-direction: column; gap: 6px; }
  }
  @media (max-width: 720px) {
    .signals-grid { grid-template-columns: 1fr; }
    .fam-grid { grid-template-columns: 1fr; }
    .corpus-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 480px) {
    .corpus-grid { grid-template-columns: 1fr; }
    .home-hero-h1 { font-size: 32px; }
  }
}

/* ============================================================
   Motion (preserved from prior implementation — used widely)
   ============================================================ */

@keyframes academic-fade-up {
  from { opacity: 0; transform: translate3d(0, 14px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
@keyframes academic-fade-soft {
  from { opacity: 0; transform: translate3d(0, 8px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@layer utilities {
  .motion-academic-enter {
    opacity: 0;
    transform: translate3d(0, 14px, 0);
    animation: academic-fade-up 560ms var(--ease-out-quint) both;
    animation-delay: var(--enter-delay, 0ms);
  }
  .motion-academic-enter-soft {
    opacity: 0;
    transform: translate3d(0, 8px, 0);
    animation: academic-fade-soft 420ms var(--ease-out-quart) both;
    animation-delay: var(--enter-delay, 0ms);
  }
  .motion-academic-surface {
    transition:
      transform 220ms var(--ease-out-quart),
      box-shadow 220ms var(--ease-out-quart),
      border-color 220ms var(--ease-out-quart),
      background-color 220ms var(--ease-out-quart);
    will-change: transform;
  }
  .motion-academic-hover {
    transition:
      transform 220ms var(--ease-out-quart),
      box-shadow 220ms var(--ease-out-quart),
      border-color 220ms var(--ease-out-quart),
      background-color 220ms var(--ease-out-quart),
      color 220ms var(--ease-out-quart);
  }
  .motion-academic-button {
    transition:
      transform 180ms var(--ease-out-quart),
      background-color 180ms var(--ease-out-quart),
      border-color 180ms var(--ease-out-quart),
      color 180ms var(--ease-out-quart),
      opacity 180ms var(--ease-out-quart),
      box-shadow 180ms var(--ease-out-quart);
  }
  .motion-academic-progress {
    transition: width 420ms var(--ease-out-quint);
  }
  @media (hover: hover) and (pointer: fine) {
    .motion-academic-hover:hover { transform: translate3d(0, -2px, 0); }
    .motion-academic-button:hover { transform: translate3d(0, -1px, 0); }
  }
}

/* Two-handle range slider — both inputs sit overlaid on a shared track.
   The track-level <input> is pointer-events:none so only the thumbs respond
   to clicks, otherwise clicking the track would warp the wrong handle. We
   give the thumbs a generous 18×18 hit area for stable dragging, and skip
   any width/transform transitions so the fill bar tracks the cursor 1:1
   instead of lagging 300ms behind every move (the prior cause of the
   "jumpy" feel). */
/* ============================================================
   Param-range picker (themed)
   - Dual-handle dual-input slider, snap to fixed bucket ticks
   - Hairline rail with labelled bucket marks above the rail
   - Square outline thumbs (matches the editorial sharp-corner language)
   - Mono numerals in the read-out, kicker label on the left
   - Variants: default (A), inline (B), promo (C)
   ============================================================ */

.pr-slider {
  display: grid;
  grid-template-columns: 180px 1fr minmax(130px, auto);
  gap: 24px;
  align-items: center;
}
.pr-slider-track-only {
  grid-template-columns: 1fr minmax(130px, auto);
  gap: 18px;
}
.pr-slider.inline {
  grid-template-columns: max-content 1fr max-content;
  gap: 18px;
}
.pr-readout-cell {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  justify-self: end;
}
.pr-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  line-height: 1.45;
}
.pr-label strong {
  display: block;
  color: var(--fg);
  font-weight: 600;
  margin-bottom: 2px;
}
.pr-label.inline-label {
  white-space: nowrap;
}
.pr-label.inline-label strong {
  display: inline;
  margin: 0;
}

.pr-track-wrap {
  position: relative;
  height: 56px;
  user-select: none;
  min-width: 0;
}
.pr-ticks {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--fg-subtle);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}
.pr-tick {
  position: absolute;
  top: 0;
  width: 1px;
  text-align: center;
}
.pr-tick::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 18px;
  width: 1px;
  height: 6px;
  background: var(--border-strong);
  transform: translateX(-50%);
}
.pr-tick.on::after {
  background: var(--fg);
}
.pr-tick > span {
  display: inline-block;
  white-space: nowrap;
}

.pr-rail {
  position: absolute;
  left: 0;
  right: 0;
  top: 36px;
  height: 2px;
  background: var(--border-strong);
}
.pr-fill {
  position: absolute;
  top: 36px;
  height: 2px;
  background: var(--fg);
  transition: left 0.08s linear, width 0.08s linear;
}
.pr-microticks {
  position: absolute;
  left: 0;
  right: 0;
  top: 36px;
  height: 2px;
  pointer-events: none;
}
.pr-microticks > span {
  position: absolute;
  top: -2px;
  width: 1px;
  height: 6px;
  background: var(--border-soft);
  transform: translateX(-50%);
}

.pr-readout {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg);
  text-align: right;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-bottom: 1.5px solid var(--fg);
  background: var(--bg);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.pr-readout .arrow {
  color: var(--fg-subtle);
  margin: 0 4px;
}
.pr-readout.inline {
  border: 0;
  padding: 0;
  font-weight: 600;
  text-align: left;
  background: transparent;
}

.pr-reset {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 2px 4px;
  white-space: nowrap;
  transition: color var(--transition);
}
.pr-reset:hover {
  color: var(--accent);
}

/* Inline toggle: "Show models without a reported size". Sits next to the
   readout, matches the editorial sharp-corner vocabulary. */
.pr-unknown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 2px 4px;
  white-space: nowrap;
  transition: color var(--transition);
}
.pr-unknown-toggle.on {
  color: var(--fg);
}
.pr-unknown-toggle:hover {
  color: var(--accent);
}
.pr-unknown-toggle-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  font-size: 10px;
  line-height: 1;
}
.pr-unknown-toggle.on .pr-unknown-toggle-box {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* Variant C: warm-bg, left-accent, "narrow the matrix" framing */
.pr-promo {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(420px, 2fr) auto;
  gap: 28px;
  align-items: center;
  padding: 16px 20px;
  border: 1px solid var(--border);
  background: var(--bg-warm);
  border-left: 2px solid var(--accent);
}
.pr-promo .pr-promo-head {
  line-height: 1.5;
  min-width: 0;
}
.pr-promo .pr-promo-head .kicker {
  display: block;
  margin-bottom: 4px;
}
.pr-promo .pr-promo-head p {
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
}
@media (max-width: 900px) {
  .pr-promo {
    grid-template-columns: 1fr;
  }
  .pr-slider {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .pr-slider.inline {
    grid-template-columns: max-content 1fr max-content;
  }
}

/* Native range inputs sit above the visual rail to provide drag + a11y.
   We hide the runnable-track and style only the thumb. The two inputs
   overlap perfectly (same min/max/step) and only the thumbs are clickable
   so the user can grab either handle without warping the wrong one. */
.param-range-input {
  appearance: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 31px;
  width: 100%;
  height: 14px;
  background: transparent;
  pointer-events: none;
  margin: 0;
  padding: 0;
}
.param-range-input::-webkit-slider-runnable-track {
  height: 14px;
  background: transparent;
  border: 0;
}
.param-range-input::-webkit-slider-thumb {
  appearance: none;
  pointer-events: auto;
  height: 12px;
  width: 12px;
  border: 2px solid var(--fg);
  background: var(--bg);
  border-radius: 0;
  margin-top: 0;
  cursor: ew-resize;
  transition: background var(--transition), border-color var(--transition);
}
.param-range-input::-webkit-slider-thumb:hover {
  background: var(--fg);
}
.param-range-input::-moz-range-track {
  height: 14px;
  border: 0;
  background: transparent;
}
.param-range-input::-moz-range-thumb {
  pointer-events: auto;
  height: 12px;
  width: 12px;
  border: 2px solid var(--fg);
  background: var(--bg);
  border-radius: 0;
  cursor: ew-resize;
  transition: background var(--transition), border-color var(--transition);
}
.param-range-input::-moz-range-thumb:hover {
  background: var(--fg);
}
.param-range-input:focus-visible {
  outline: none;
}
.param-range-input:focus-visible::-webkit-slider-thumb {
  background: var(--accent);
  border-color: var(--accent);
}
.param-range-input:focus-visible::-moz-range-thumb {
  background: var(--accent);
  border-color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .motion-academic-enter,
  .motion-academic-enter-soft {
    opacity: 1;
    transform: none;
    animation: none;
  }
  .motion-academic-surface,
  .motion-academic-hover,
  .motion-academic-button,
  .motion-academic-progress {
    transition: none;
  }
}