:root {
  /* Brand colors */
  --color-primary: #0F2A43;
  --color-primary-hover: #1B4B73;
  --color-secondary: #156F77;
  --color-secondary-hover: #11616A;
  --color-accent: #C9A227;

  /* Status colors (workflow / approval states) */
  --color-success: #2F9E58;
  --color-warning: #D9A441;
  --color-danger: #C0392B;
  --color-info: #2E86C1;

  /* Neutral scale */
  --color-neutral-50: #F7F8FA;
  --color-neutral-100: #EDEFF2;
  --color-neutral-200: #DCE0E5;
  --color-neutral-300: #C2C8D0;
  --color-neutral-400: #9AA3AF;
  --color-neutral-500: #6B7480;
  --color-neutral-600: #4A525E;
  --color-neutral-700: #2E3540;
  --color-neutral-800: #1A1F27;
  --color-neutral-900: #12161C;

  /* Semantic aliases */
  --color-bg: var(--color-neutral-50);
  --color-surface: #FFFFFF;
  --color-text: var(--color-neutral-800);
  --color-text-muted: var(--color-neutral-600);
  --color-border: var(--color-neutral-200);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.375rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2.25rem;
  --font-size-4xl: 3rem;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(15, 42, 67, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 42, 67, 0.10);
  --shadow-lg: 0 12px 32px rgba(15, 42, 67, 0.14);
}