*{margin:0;padding:0;box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;transition:background-color .3s ease,color .3s ease}body.light-theme{background-color:#fff;color:#212529}body.dark-theme{background-color:#1a1a1a;color:#fff}code{font-family:Courier New,monospace}:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--primary-color: #667eea;--secondary-color: #764ba2;--success-color: #28a745;--error-color: #dc3545;--warning-color: #ffc107;--info-color: #17a2b8;--bg-white: #ffffff;--bg-light: #f8f9fa;--bg-dark: #343a40;--text-primary: #333333;--text-secondary: #666666;--text-light: #999999;--border-light: #e0e0e0;--border-primary: #667eea;--shadow-sm: 0 2px 4px rgba(0,0,0,.1);--shadow-md: 0 4px 6px rgba(0,0,0,.1);--shadow-lg: 0 10px 25px rgba(0,0,0,.1);--border-radius: 8px;--border-radius-sm: 4px;--border-radius-lg: 12px;--transition: all .3s ease}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.App{text-align:center}.card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 10px 25px #0000001a;transition:transform .3s ease,box-shadow .3s ease}.card:hover{transform:translateY(-2px);box-shadow:0 15px 35px #00000026}.section-title{font-size:1.5rem;margin-bottom:20px;color:#333;border-bottom:2px solid #f0f0f0;padding-bottom:10px}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-block}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 5px 15px #667eea4d}.btn-primary:disabled{background:#ccc;cursor:not-allowed;transform:none;box-shadow:none}.btn-secondary{background:#f8f9fa;color:#333;border:1px solid #e0e0e0}.btn-secondary:hover{background:#e9ecef}.status-indicator{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:20px;font-size:14px;font-weight:500}.status-online{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-offline{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.status-unknown{background:#fff3cd;color:#856404;border:1px solid #ffeaa7}