:root {
  /* Primary palette - brand blues anchored at #00AEEF */
  --color-primary-50: #e6f7fd;
  --color-primary-100: #b8e8fb;
  --color-primary-200: #7fd5f8;
  --color-primary-300: #47c4f3;
  --color-primary-400: #1ab9f1;
  --color-primary-500: #00aeef;
  --color-primary-600: #0099d4;
  --color-primary-700: #0277bd;
  --color-primary-800: #025fa0;
  --color-primary-900: #014880;
  --color-primary-950: #012d4f;

  /* Secondary - brand orange for CTAs and highlights */
  --color-secondary-50: #fff4e6;
  --color-secondary-100: #fde4bc;
  --color-secondary-200: #fbd093;
  --color-secondary-300: #f9bc68;
  --color-secondary-400: #f8a84a;
  --color-secondary-500: #f79232;
  --color-secondary-600: #e07a1a;
  --color-secondary-700: #c46310;

  /* Neutrals - anchored at brand gray #565656 */
  --color-neutral-50: #f7f7f7;
  --color-neutral-100: #eeeeee;
  --color-neutral-200: #e0e0e0;
  --color-neutral-300: #cccccc;
  --color-neutral-400: #9e9e9e;
  --color-neutral-500: #757575;
  --color-neutral-600: #565656;
  --color-neutral-700: #424242;
  --color-neutral-800: #2d2d2d;
  --color-neutral-900: #1a1a1a;

  /* Brand accent colors */
  --color-accent-purple: #691b99;
  --color-accent-lime: #b3c635;
  --color-brand-blue-mid: #2482b2;

  /* Semantic colors */
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-error: #dc2626;

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

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

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

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-padding: var(--space-6);

  /* Borders */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}