/* ── DecisionCompute Design Tokens ──────────────────────────────────
   Single source of truth for colors, typography, spacing, and effects.
   Import this file BEFORE any component stylesheet.
   ──────────────────────────────────────────────────────────────────── */

:root {
  /* Brand */
  --color-ink: #1f1f23;
  --color-ink-light: #3a3a40;
  --color-muted: #64748b;
  --color-subtle: #94a3b8;

  /* Surface */
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: rgba(31, 31, 35, 0.10);
  --color-border-strong: rgba(31, 31, 35, 0.20);

  /* Accent — single brand color */
  --color-accent: #1f1f23;
  --color-accent-hover: #3a3a40;
  --color-accent-text: #ffffff;

  /* Feedback */
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #2563eb;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-lg: 18px;
  --text-xl: 22px;
  --text-2xl: 28px;
  --text-3xl: 36px;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-black: 800;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(31, 31, 35, 0.06);
  --shadow-md: 0 4px 16px rgba(31, 31, 35, 0.08);
  --shadow-lg: 0 12px 40px rgba(31, 31, 35, 0.12);
  --shadow-xl: 0 24px 80px rgba(31, 31, 35, 0.14);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}