:root {
  /* Colors */
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-sidebar: #111827;
  --color-primary: #3b5ccc;
  --color-primary-hover: #314ca6;
  --color-primary-soft: #eef1fb;
  --color-text: #1a1d26;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;

  /* Typography */
  --font-family: Inter, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Spacing */
  --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;

  /* Components */
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 6px;
  --radius-full: 9999px;

  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-elevated: 0 4px 12px rgba(0,0,0,0.08);

  --transition: 150ms ease;

  /* Layout */
  --sidebar-width: 240px;
  --topbar-height: 72px;
}

@media (prefers-color-scheme: dark) {
  /* Ready for future dark mode implementation */
}