/* ─────────────────────────────────────────────────────────────────────────
   CBC Prototype — design tokens
   Same system as the review deck, scoped for the live app shell.
   ───────────────────────────────────────────────────────────────────────── */

:root {
  /* Surfaces */
  --paper:       #f5f3ec;
  --paper-2:     #ecebe3;
  --paper-3:     #e3e0d2;
  --paper-edge:  #d7d3c5;
  --ink:         #0e1013;
  --ink-2:       #1a1d22;
  --ink-3:       #24282f;
  --ink-soft:    #3a3d43;
  --muted:       #6b6f76;
  --muted-2:     #9aa0a8;
  --rule:        #cbc7b9;
  --rule-soft:   #e0ddd0;
  --rule-dark:   #1f232a;
  --rule-dark-soft: #15181d;

  /* Direction triad — non-negotiable */
  --rd: oklch(48% 0.13 245);
  --dd: oklch(55% 0.17 55);
  --td: oklch(50% 0.09 185);
  --rd-soft: oklch(48% 0.13 245 / 0.08);
  --dd-soft: oklch(55% 0.17 55 / 0.08);
  --td-soft: oklch(50% 0.09 185 / 0.08);

  /* Accents + status */
  --accent:      oklch(58% 0.18 45);
  --accent-hot:  oklch(52% 0.20 40);
  --accent-soft: oklch(58% 0.18 45 / 0.10);
  --ok:          oklch(55% 0.13 150);
  --warn:        oklch(65% 0.15 80);
  --err:         oklch(52% 0.18 25);
  --ok-soft:     oklch(55% 0.13 150 / 0.10);
  --warn-soft:   oklch(65% 0.15 80 / 0.10);
  --err-soft:    oklch(52% 0.18 25 / 0.10);

  /* Type */
  --serif: "IBM Plex Serif", "Source Serif 4", Georgia, serif;
  --sans:  "IBM Plex Sans", -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Density — flipped by the Tweaks panel */
  --row-h: 44px;
  --pad-x: 22px;
  --pad-y: 18px;
  --gap-md: 16px;
  --font-body: 14px;
  --font-num-lg: 36px;

  --shadow-overlay: 0 14px 38px -10px rgba(14, 16, 19, 0.18),
                    0 4px 8px -4px rgba(14, 16, 19, 0.12);
}

[data-density="dense"] {
  --row-h: 36px;
  --pad-x: 16px;
  --pad-y: 12px;
  --gap-md: 12px;
  --font-body: 13px;
  --font-num-lg: 30px;
}

* { box-sizing: border-box; }

html, body, #root {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: var(--font-body);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
input:focus, select:focus, textarea:focus, button:focus { outline: none; }
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 1px;
}
button:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 2px;
}

/* Make all numerics tabular by default — engineering tables benefit */
.mono, .num, table, .tabular {
  font-variant-numeric: tabular-nums;
}

/* Subtle scrollbar — workstation feel */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: color-mix(in oklch, var(--ink) 18%, transparent);
  border-radius: 0;
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in oklch, var(--ink) 32%, transparent);
}