:root {
  /* Primary (Teacher focused) */
  --color-primary-50: #eef4ff;
  --color-primary-100: #dce8ff;
  --color-primary-300: #8cb6ff;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;

  /* Secondary (Student / Games focused) */
  --color-secondary-50: #f3f0ff;
  --color-secondary-100: #e9e0ff;
  --color-secondary-300: #bda7ff;
  --color-secondary-500: #8b5cf6;
  --color-secondary-600: #7c3aed;

  /* Success (Correct spelling, achievements) */
  --color-success-400: #22c55e;
  --color-success-500: #16a34a;
  --color-success-600: #15803d;

  /* Warning */
  --color-warning-400: #f59e0b;
  --color-warning-500: #d97706;

  /* Danger / Error */
  --color-danger-400: #ef4444;
  --color-danger-500: #dc2626;

  /* Neutral colors */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-text: #0f172a;
  --color-text-soft: #334155;
  --color-text-muted: #64748b;
  --color-disabled: #94a3b8;

  /* Typography Sizes */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;

  /* Spacing system (4px steps) */
  --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;
  --space-16: 64px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
}