/* ==========================================================================
   Executive Shell — portfolio standard v1 (tokens only, for pages not on the shell)
   Header + badge row + KPI strip + guided tour overlay + footer.
   Six category palettes selected by data-theme on <html> (default: midnight).
   Dark is the default; each palette has a light variant that the header's
   sun/moon toggle enables (data-scheme="light" on <html>, remembered in
   localStorage). Only colour changes between palettes — type, spacing and
   structure are fixed.
   Every token pair is checked for WCAG AA by contrast-check (mjs/py).
   Zero dependencies.
   ========================================================================== */

/* --- palettes ------------------------------------------------------------- */
/* --primary / --secondary are the palette's two hues; --accent / --accent-2 are
   what components use. data-accent="secondary" on <html> swaps them. */
:root,
[data-theme="midnight"] {
  --bg: #0b1220;
  --panel: #111a2e;
  --panel-2: #16223a;
  --border: #22304d;
  --text: #e6edf3;
  --muted: #9da9c0;
  --primary: #58a6ff;
  --secondary: #d4a95a;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #f85149;
  --on-accent: #0b1220;
  --chart-1: #58a6ff;
  --chart-2: #d4a95a;
  --chart-3: #3fb950;
  --chart-4: #f85149;
  --chart-5: #d2a8ff;
  --chart-6: #ffa657;
  --chart-7: #79c0ff;
  --chart-8: #f2cc60;
}
[data-theme="signal"] {
  --bg: #0f172a;
  --panel: #16213b;
  --panel-2: #1c2a4a;
  --border: #2a3a5f;
  --text: #e5e9f2;
  --muted: #94a3b8;
  --primary: #818cf8;
  --secondary: #2dd4bf;
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #fb7185;
  --on-accent: #0f172a;
  --chart-1: #818cf8;
  --chart-2: #2dd4bf;
  --chart-3: #f472b6;
  --chart-4: #fbbf24;
  --chart-5: #60a5fa;
  --chart-6: #a3e635;
  --chart-7: #fb923c;
  --chart-8: #c4b5fd;
}
[data-theme="graphite"] {
  --bg: #0b0f14;
  --panel: #131a22;
  --panel-2: #1a232e;
  --border: #2a3542;
  --text: #e6e9ee;
  --muted: #98a2b3;
  --primary: #f59e0b;
  --secondary: #a3e635;
  --ok: #a3e635;
  --warn: #f59e0b;
  --danger: #f87171;
  --on-accent: #0b0f14;
  --chart-1: #f59e0b;
  --chart-2: #a3e635;
  --chart-3: #f87171;
  --chart-4: #38bdf8;
  --chart-5: #c084fc;
  --chart-6: #fb923c;
  --chart-7: #34d399;
  --chart-8: #f9a8d4;
}
[data-theme="ember"] {
  --bg: #1a1614;
  --panel: #231e1b;
  --panel-2: #2c2622;
  --border: #3d352f;
  --text: #f1ebe4;
  --muted: #b0a397;
  --primary: #e0b356;
  --secondary: #f4845f;
  --ok: #7cc47f;
  --warn: #e0b356;
  --danger: #f26b6b;
  --on-accent: #1a1614;
  --chart-1: #e0b356;
  --chart-2: #f4845f;
  --chart-3: #7cc47f;
  --chart-4: #6bb1e0;
  --chart-5: #c9a2e6;
  --chart-6: #f2d16b;
  --chart-7: #f9a8d4;
  --chart-8: #9be7ff;
}
[data-theme="plum"] {
  --bg: #1a1024;
  --panel: #241733;
  --panel-2: #2e1f42;
  --border: #433059;
  --text: #f0e9f7;
  --muted: #b3a3c7;
  --primary: #c084fc;
  --secondary: #6ee7b7;
  --ok: #6ee7b7;
  --warn: #fbbf24;
  --danger: #fb7185;
  --on-accent: #1a1024;
  --chart-1: #c084fc;
  --chart-2: #6ee7b7;
  --chart-3: #f9a8d4;
  --chart-4: #fbbf24;
  --chart-5: #7dd3fc;
  --chart-6: #fda4af;
  --chart-7: #fde68a;
  --chart-8: #86efac;
}
[data-theme="forest"] {
  --bg: #0d1b16;
  --panel: #14261f;
  --panel-2: #1b3128;
  --border: #2c463b;
  --text: #e7f0ea;
  --muted: #9fb3a7;
  --primary: #a3e635;
  --secondary: #7dd3fc;
  --ok: #4ade80;
  --warn: #facc15;
  --danger: #f87171;
  --on-accent: #0d1b16;
  --chart-1: #a3e635;
  --chart-2: #7dd3fc;
  --chart-3: #f472b6;
  --chart-4: #facc15;
  --chart-5: #fb923c;
  --chart-6: #c4b5fd;
  --chart-7: #fde68a;
  --chart-8: #f9a8d4;
}
/* Light variants: opt-in through the header toggle (data-scheme="light" on <html>, persisted). */
[data-scheme="light"],
[data-scheme="light"][data-theme="midnight"] {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel-2: #eaf0f8;
  --border: #c9d4e3;
  --text: #0b1220;
  --muted: #4a5568;
  --primary: #1d4ed8;
  --secondary: #7a5a20;
  --ok: #166534;
  --warn: #92400e;
  --danger: #b91c1c;
  --on-accent: #ffffff;
  --chart-1: #1d4ed8;
  --chart-2: #7a5a20;
  --chart-3: #15803d;
  --chart-4: #b91c1c;
  --chart-5: #6d28d9;
  --chart-6: #c2410c;
  --chart-7: #0e7490;
  --chart-8: #a16207;
}
[data-scheme="light"][data-theme="signal"] {
  --bg: #f8fafc;
  --panel: #ffffff;
  --panel-2: #eef2ff;
  --border: #cbd5e1;
  --text: #0f172a;
  --muted: #475569;
  --primary: #4f46e5;
  --secondary: #0f766e;
  --ok: #166534;
  --warn: #a34a03;
  --danger: #be123c;
  --on-accent: #ffffff;
  --chart-1: #4f46e5;
  --chart-2: #0f766e;
  --chart-3: #be185d;
  --chart-4: #b45309;
  --chart-5: #1d4ed8;
  --chart-6: #4d7c0f;
  --chart-7: #c2410c;
  --chart-8: #6d28d9;
}
[data-scheme="light"][data-theme="graphite"] {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #eef1f5;
  --border: #cfd6df;
  --text: #0b0f14;
  --muted: #4b5563;
  --primary: #9a4507;
  --secondary: #3f6212;
  --ok: #3f6212;
  --warn: #9a4507;
  --danger: #b91c1c;
  --on-accent: #ffffff;
  --chart-1: #9a4507;
  --chart-2: #3f6212;
  --chart-3: #b91c1c;
  --chart-4: #0369a1;
  --chart-5: #7e22ce;
  --chart-6: #c2410c;
  --chart-7: #047857;
  --chart-8: #9d174d;
}
[data-scheme="light"][data-theme="ember"] {
  --bg: #faf6f1;
  --panel: #ffffff;
  --panel-2: #f3ece3;
  --border: #d9cfc3;
  --text: #1a1614;
  --muted: #5b514a;
  --primary: #8b5e00;
  --secondary: #b3401d;
  --ok: #2f6f3a;
  --warn: #8b5e00;
  --danger: #b3261e;
  --on-accent: #ffffff;
  --chart-1: #8b5e00;
  --chart-2: #b3401d;
  --chart-3: #2f6f3a;
  --chart-4: #1f5f8b;
  --chart-5: #6b3fa0;
  --chart-6: #7a6400;
  --chart-7: #9d174d;
  --chart-8: #0e7490;
}
[data-scheme="light"][data-theme="plum"] {
  --bg: #faf7fd;
  --panel: #ffffff;
  --panel-2: #f1eafa;
  --border: #d6c9e6;
  --text: #1a1024;
  --muted: #5b4b6e;
  --primary: #7e22ce;
  --secondary: #047857;
  --ok: #047857;
  --warn: #a34a03;
  --danger: #be123c;
  --on-accent: #ffffff;
  --chart-1: #7e22ce;
  --chart-2: #047857;
  --chart-3: #be185d;
  --chart-4: #b45309;
  --chart-5: #0369a1;
  --chart-6: #9f1239;
  --chart-7: #a16207;
  --chart-8: #15803d;
}
[data-scheme="light"][data-theme="forest"] {
  --bg: #f5faf7;
  --panel: #ffffff;
  --panel-2: #e9f3ed;
  --border: #c9dccf;
  --text: #0d1b16;
  --muted: #4a5d53;
  --primary: #3f6212;
  --secondary: #0369a1;
  --ok: #166534;
  --warn: #854d0e;
  --danger: #b91c1c;
  --on-accent: #ffffff;
  --chart-1: #3f6212;
  --chart-2: #0369a1;
  --chart-3: #be185d;
  --chart-4: #a16207;
  --chart-5: #c2410c;
  --chart-6: #6d28d9;
  --chart-7: #a16207;
  --chart-8: #9d174d;
}
/* --- derived tokens (never edit per repo) --------------------------------- */
:root {
  --accent: var(--primary);
  --accent-2: var(--secondary);
  --accent-hover: color-mix(in srgb, var(--accent) 82%, var(--text));
  --accent-glow: color-mix(in srgb, var(--accent) 45%, transparent);
  --header-fade: color-mix(in srgb, var(--panel) 94%, transparent);
  --backdrop: color-mix(in srgb, var(--bg) 72%, transparent);
  --btn-hover: color-mix(in srgb, var(--panel-2) 80%, var(--accent));
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.55);

  --radius: 10px;
  --radius-sm: 6px;
  --gutter: 16px;
  --shell-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --shell-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --shell-speed: 180ms;
  --shell-z-tour: 9000;
}

[data-accent="secondary"] {
  --accent: var(--secondary);
  --accent-2: var(--primary);
}

[data-scheme="light"] {
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.18);
}