:root {
  --space-0: 0;
  --space-1: 0.125rem;
  --space-2: 0.25rem;
  --space-3: 0.5rem;
  --space-4: 0.75rem;
  --space-5: 1rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 3rem;
  --space-9: 4rem;

  --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: 2rem;
  --text-4xl: 2.5rem;

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

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-xl: 8px;

  --width-xs: 320px;
  --width-sm: 400px;
  --width-md: 600px;
  --width-lg: 800px;
  --width-xl: 1000px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-focus: 0 0 0 2px var(--accent-muted);

  --transition-fast: 0.1s ease;
  --transition-normal: 0.15s ease;
  --transition-slow: 0.25s ease;

  --bg-primary: #ffffff;
  --bg-secondary: #f8f8fa;
  --bg-tertiary: #f0f0f2;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-input-disabled: #f8f8fa;

  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --text-inverse: #ffffff;

  --border-color: #e5e5e5;
  --border-light: #f0f0f0;
  --border-dark: #cccccc;

  --accent: #2c00ff;
  --accent-hover: #1a00a3;
  --accent-muted: rgba(44, 0, 255, 0.08);
  --accent-light: #4d33ff;

  --secondary: #ff2400;
  --secondary-hover: #cc1d00;
  --secondary-muted: rgba(255, 36, 0, 0.08);

  --success-bg: #dfd;
  --success-border: #8c8;
  --success-text: #060;

  --error-bg: #fee;
  --error-border: #fcc;
  --error-text: #c00;

  --warning-bg: #ffd;
  --warning-border: #d4a03c;
  --warning-text: #856404;

  --border-color-light: var(--border-dark);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #141414;
    --bg-input: #1a1a1a;
    --bg-input-disabled: #141414;

    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --text-inverse: #0a0a0a;

    --border-color: #2a2a2a;
    --border-light: #222222;
    --border-dark: #333333;

    --accent: #7b6bff;
    --accent-hover: #9588ff;
    --accent-muted: rgba(123, 107, 255, 0.2);
    --accent-light: #9588ff;

    --secondary: #ff6b5b;
    --secondary-hover: #ff8577;
    --secondary-muted: rgba(255, 107, 91, 0.2);

    --success-bg: #1a3d1a;
    --success-border: #2d5a2d;
    --success-text: #7bc67b;

    --error-bg: #3d1a1a;
    --error-border: #5a2d2d;
    --error-text: #ff7b7b;

    --warning-bg: #3d3d1a;
    --warning-border: #5a5a2d;
    --warning-text: #c6c67b;
  }
}