:root {
  /* Brand */
  --color-primary-50: #F4F1FF;
  --color-primary-100: #E9E3FF;
  --color-primary-200: #D2C6FF;
  --color-primary-300: #B29BFF;
  --color-primary-400: #8D6CFF;
  --color-primary-500: #6A45EA;
  --color-primary-600: #542FD6;
  --color-primary-700: #4524B4;
  --color-primary-800: #392092;
  --color-primary-900: #301D76;

  /* Neutral */
  --color-white: #FFFFFF;
  --color-neutral-50: #FAF9FC;
  --color-neutral-100: #F6F5F9;
  --color-neutral-300: #DDD9E6;
  --color-neutral-500: #918D9C;
  --color-neutral-600: #6D6979;
  --color-neutral-800: #2B2935;
  --color-neutral-950: #12111B;

  /* Semantic */
  --color-success: #2A8F68;
  --color-warning: #C57A21;
  --color-danger: #C94B5F;
  --color-info: var(--color-primary-600);

  /* Semantic aliases */
  --color-action-primary: var(--color-primary-600);
  --color-action-primary-hover: var(--color-primary-700);
  --color-action-primary-pressed: var(--color-primary-800);
  --color-focus-ring: #D7CCFF;
  --color-surface-default: var(--color-white);
  --color-surface-soft: var(--color-neutral-100);
  --color-text-primary: var(--color-neutral-950);
  --color-text-secondary: var(--color-neutral-600);
  --color-border-default: var(--color-neutral-300);

  /* Typography */
  --font-family-sans: Inter, Arial, sans-serif;
  --font-size-caption: 0.75rem;
  --font-size-body-sm: 0.875rem;
  --font-size-body: 1rem;
  --font-size-h3: 1.5rem;
  --font-size-h2: 2rem;
  --font-size-h1: 2.5rem;
  --font-size-display: 3rem;
  --line-height-tight: 1.12;
  --line-height-body: 1.55;

  /* Spacing - 4px base */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-28: 7rem;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-control: 0.5rem;
  --radius-card: 1rem;
  --radius-section: 1.5rem;
  --radius-pill: 999px;

  /* Elevation */
  --shadow-xs: 0 2px 8px rgba(44, 30, 95, 0.06);
  --shadow-sm: 0 6px 18px rgba(44, 30, 95, 0.09);
  --shadow-md: 0 12px 34px rgba(61, 38, 142, 0.12);

  /* Motion */
  --duration-fast: 120ms;
  --duration-default: 180ms;
  --duration-slow: 240ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);

  /* Layout */
  --container-max: 1200px;
  --grid-gutter: 24px;
  --section-space: 96px;

  /* Gradient */
  --gradient-brand: linear-gradient(135deg, #512DD4 0%, #8D79F6 100%);
}