:root {
  /* Color system */
  --color-bg: #0b1220;
  --color-surface: #111827;
  --color-surface-elevated: #1f2937;
  --color-text: #e5e7eb;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  --color-accent: #22c55e;
  --color-info: #06b6d4;
  --color-warning: #f59e0b;
  --color-danger: #f87171;

  /* Typography */
  --font-family-sans: "Avenir Next", "Nunito", "Inter", "SF Pro Text", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --font-family-mono: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* Radius */
  --radius-card: 14px;
  --radius-control: 12px;
  --radius-chip: 9999px;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);

  /* Sizing */
  --touch-target-min: 44px;

  /* Focus */
  --focus-ring: 0 0 0 3px rgba(34, 197, 94, 0.35);
}