body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8a8a8; }

#error-container { display: none; padding: 20px; background: #fee2e2; color: #991b1b; border-bottom: 2px solid #ef4444; }