:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #e5e7eb;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
}

[data-theme="dark"] {
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --accent: #60a5fa;
  --accent-hover: #3b82f6;
  --border: #374151;
}

[data-theme="custom"] {
  --bg-primary: var(--custom-bg-primary, #ffffff);
  --bg-secondary: var(--custom-bg-secondary, #f3f4f6);
  --text-primary: var(--custom-text-primary, #111827);
  --accent: var(--custom-accent, #3b82f6);
}