:root {
  /* Primary */
  --color-primary: #4361EE;
  --color-primary-light: #7B8FF5;
  --color-primary-dark: #3A56D4;

  /* Feedback */
  --color-correct: #2DC653;
  --color-correct-bg: #E8F9ED;
  --color-wrong: #EF476F;
  --color-wrong-bg: #FDE8ED;

  /* Neutrals */
  --color-bg: #F8F9FA;
  --color-surface: #FFFFFF;
  --color-text: #1A1A2E;
  --color-text-light: #6C757D;
  --color-border: #E0E0E0;

  /* Accent */
  --color-accent: #FFC107;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-question: clamp(1.25rem, 4vw, 1.75rem);
  --font-size-answer: clamp(1rem, 3vw, 1.25rem);
  --font-size-small: 0.875rem;
  --font-size-xs: 0.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Layout */
  --max-width: 600px;
  --border-radius: 12px;
  --border-radius-sm: 8px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}