/* ============================================================
   tokens.css — design system for Person Sections Analyzer
   Implements the palette rules from:
   • atmos.style "Create the best UI color palette"
   • IxDF "UI Color Palette — best practices"

   Rules honoured here:
   1. Base families  — primary (indigo), semantic (success / warning /
      danger / info) and neutrals; nothing else.
   2. Numbered shades 100 → 900 (100 = lightest) so shades can be added
      later without renaming (no adjectives like "light/darker").
   3. Neutrals are NOT pure grey — they are tinted with the primary hue
      (hue ≈ 255, chroma ≈ .02) for a coherent "enterprise" feel; pure
      #000/#fff are avoided (IxDF rule), screens stay easy on the eyes.
   4. 60-30-10 dominance — ~60% neutral surfaces (--bg/--surface),
      ~30% mid neutrals + text, ~10% primary accent (actions).
   5. WCAG AA contrast — body text ≥ 4.5:1, UI components ≥ 3:1;
      status colors never rely on color alone (label text inside pills).
   ============================================================ */
:root {
  color-scheme: dark;

  /* ---------- neutral (blue-tinted grey, hue 255) ---------- */
  --neutral-50:  #f0f6fc;
  --neutral-100: #e6edf3;
  --neutral-200: #cfd8e3;
  --neutral-300: #a8b3c1;
  --neutral-400: #8b949e;
  --neutral-500: #6e7681;
  --neutral-600: #4d5561;
  --neutral-700: #2f3742;
  --neutral-800: #21262d;
  --neutral-900: #161b22;
  --neutral-950: #0d1117;

  /* ---------- primary (indigo, hue ~262) ---------- */
  --primary-100: #e0e7ff;
  --primary-200: #c7d2fe;
  --primary-300: #a5b4fc;
  --primary-400: #818cf8;
  --primary-500: #6366f1;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --primary-800: #3730a3;
  --primary-900: #312e81;

  /* ---------- success (green, hue 152) ---------- */
  --success-100: #d1fae5;
  --success-300: #6ee7b7;
  --success-400: #34d399;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;

  /* ---------- warning (amber) ---------- */
  --warning-100: #fef3c7;
  --warning-300: #fcd34d;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;

  /* ---------- danger (red) ---------- */
  --danger-100: #fee2e2;
  --danger-300: #fca5a5;
  --danger-400: #f87171;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --danger-700: #b91c1c;

  /* ---------- info (sky) ---------- */
  --info-300: #7dd3fc;
  --info-400: #38bdf8;
  --info-500: #0ea5e9;

  /* ---------- semantic aliases (60-30-10 mapping) ---------- */
  --bg:            var(--neutral-950);   /* 60% — dominant */
  --surface:       var(--neutral-900);   /*      panels / cards   */
  --surface-2:     var(--neutral-800);   /*      raised controls  */
  --border:        var(--neutral-700);
  --border-strong: var(--neutral-600);
  --text:          var(--neutral-100);   /* 30% — secondary mass  */
  --text-muted:    var(--neutral-400);
  --text-faint:    var(--neutral-500);
  --accent:        var(--primary-500);   /* 10% — primary actions */
  --accent-strong: var(--primary-600);
  --accent-soft:   var(--primary-800);
  --on-accent:     #ffffff;
  --success:       var(--success-500);
  --warning:       var(--warning-500);
  --danger:        var(--danger-500);
  --info:          var(--info-500);

  /* ---------- shape / space / type scale ---------- */
  --r-sm: 6px;  --r-md: 10px;  --r-lg: 14px;  --r-full: 999px;
  --s-1: 4px;   --s-2: 8px;    --s-3: 12px;   --s-4: 16px;
  --s-5: 24px;  --s-6: 32px;
  --fs-xs: 11px;  --fs-sm: 12.5px;  --fs-md: 14px;
  --fs-lg: 16px;  --fs-xl: clamp(17px, 1.4vw, 20px);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Consolas, monospace;
  --shadow-1: 0 1px 2px rgb(0 0 0 / .35), 0 6px 16px rgb(0 0 0 / .22);
  --focus-ring: 0 0 0 3px color-mix(in srgb, var(--primary-400) 45%, transparent);
}

/* ================= primitives ================= */

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-md);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--info-400); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--primary-600); color: var(--on-accent); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--neutral-700); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--neutral-600); }
::-webkit-scrollbar-track { background: transparent; }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--r-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ---------- buttons (consistent interactive elements) ---------- */
.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-1);
  min-height: 34px;
  padding: 6px 12px;
  font: inherit;
  font-size: var(--fs-md);
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--border); border-color: var(--border-strong); }
.btn:active { background: var(--neutral-700); }
.btn:disabled { opacity: .45; cursor: default; pointer-events: none; }

.btn.primary {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--on-accent);
  font-weight: 600;
}
.btn.primary:hover { background: var(--accent); border-color: var(--accent); }

.btn.danger {
  background: color-mix(in srgb, var(--danger-600) 18%, var(--surface-2));
  border-color: color-mix(in srgb, var(--danger-500) 45%, var(--border));
  color: var(--danger-300);
}
.btn.danger:hover { border-color: var(--danger-500); color: var(--danger-200, var(--danger-100)); }

.btn.ghost { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn.ghost:hover { color: var(--text); border-color: var(--border); }

.btn.small { min-height: 28px; padding: 3px 9px; font-size: var(--fs-sm); }
.btn.lg    { min-height: 40px; padding: 8px 18px; font-weight: 600; }

/* ---------- pills / chips (status never color-only: text inside) ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  font-size: var(--fs-xs);
  border-radius: var(--r-full);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
  font-family: var(--mono);
}
.pill.success { background: color-mix(in srgb, var(--success-500) 14%, var(--surface));
                border-color: color-mix(in srgb, var(--success-500) 42%, var(--border));
                color: var(--success-300); }
.pill.warning { background: color-mix(in srgb, var(--warning-500) 14%, var(--surface));
                border-color: color-mix(in srgb, var(--warning-500) 42%, var(--border));
                color: var(--warning-300); }
.pill.danger  { background: color-mix(in srgb, var(--danger-500) 14%, var(--surface));
                border-color: color-mix(in srgb, var(--danger-500) 42%, var(--border));
                color: var(--danger-300); }
.pill.info    { background: color-mix(in srgb, var(--info-500) 14%, var(--surface));
                border-color: color-mix(in srgb, var(--info-500) 42%, var(--border));
                color: var(--info-300); }
.pill.strong  { color: var(--text); font-weight: 600; }

.badge { font-size: var(--fs-sm); color: var(--text-muted); }
.sp    { flex: 1; }

/* ---------- cards ---------- */
.card {
  background: color-mix(in srgb, var(--neutral-950) 55%, var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--s-3);
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s, transform .05s;
}
.card:hover { border-color: var(--border-strong); }
.card:active { transform: translateY(1px); }
.card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-1);
}
.card .t { font-family: var(--mono); font-size: var(--fs-sm); color: var(--text); }
.card .s { font-size: var(--fs-sm);  color: var(--text-muted); margin: 5px 0 0; }
.card .row { display: flex; flex-wrap: wrap; gap: var(--s-1); margin-top: var(--s-2); }

/* ---------- progress bar ---------- */
.bar {
  height: 6px;
  background: var(--surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
  position: relative;
}
.bar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-600), var(--success-500));
  transition: width .3s;
}