/* Design tokens — 02-AGENT-DESIGN.md §2. Single source of truth for color,
   type, spacing, radius, shadow and motion across every portal. */
:root {
  /* Color */
  --color-ink: #0E3A43;
  --color-ink-700: #12464F;
  --color-ink-900: #082026;
  --color-amber: #E8A13D;
  --color-amber-600: #C97F1F;
  --color-terracotta: #B5583A;
  --color-surface: #F7F9F9;
  --color-card: #FFFFFF;
  --color-hairline: #E2E8E8;
  --color-text: #16292C;
  --color-text-muted: #5C7275;
  --color-danger: #C0392B;
  --color-danger-surface: #FBEAE8;
  --color-success: #2E7D5B;
  --color-success-surface: #E7F3EC;

  /* Type */
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;

  /* Spacing (4pt grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  /* Radius & shadow */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(14, 58, 67, 0.08);
  --shadow-md: 0 4px 16px rgba(14, 58, 67, 0.12);
  --shadow-lg: 0 12px 32px rgba(14, 58, 67, 0.18);

  /* Motion */
  --motion-fast: 150ms;
  --motion-base: 250ms;
  --motion-slow: 400ms;
}