:root {
  --font-family: 'Vazirmatn', 'Segoe UI', Tahoma, sans-serif;
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --background-color: #f8fafc;
  --surface-color: #ffffff;
  --text-color: #0f172a;
  --text-secondary: #475569;
  --border-color: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --background-color: #0f172a;
  --surface-color: #1e293b;
  --text-color: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: #334155;
}