* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #fafafa 0%, #f1f1f1 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .register-container {
            max-width: 500px;
            width: 100%;
            background: white;
            border: 1px solid #e0e0e0;
            padding: 30px;
        }
        
        .register-header {
            text-align: center;
            margin-bottom: 25px;
        }
        
        .register-header h1 {
            font-size: 28px;
            color: #2c3e50;
            margin-bottom: 5px;
        }
        
        .register-header p {
            color: #7f8c8d;
            font-size: 13px;
        }
        
        .security-info {
            background: #f8f9fa;
            padding: 10px 15px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: #2c3e50;
        }
        
        .alert {
            padding: 12px 15px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
        }
        
        .alert-error {
            background: #f8d7da;
            color: #721c24;
            border-left: 3px solid #e74c3c;
        }
        
        .alert-success {
            background: #d4edda;
            color: #155724;
            border-left: 3px solid #27ae60;
        }
        
        .form-group {
            margin-bottom: 18px;
        }
        
        .form-group label {
            display: block;
            font-size: 12px;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 5px;
        }
        
        .form-group label .required {
            color: #e74c3c;
        }
        
        .form-group label .optional {
            color: #7f8c8d;
            font-weight: normal;
            font-size: 10px;
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-with-icon i:first-child {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
            font-size: 14px;
        }
        
        .form-control {
            width: 100%;
            padding: 10px 12px 10px 38px;
            border: 1px solid #e0e0e0;
            font-size: 14px;
            transition: all 0.2s;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #ff6b35;
        }
        
        .password-toggle {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            cursor: pointer;
            color: #7f8c8d;
        }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 15px;
        }
        
        .checkbox-group input {
            width: 16px;
            height: 16px;
            cursor: pointer;
            accent-color: #ff6b35;
        }
        
        .checkbox-group label {
            font-size: 12px;
            color: #2c3e50;
        }
        
        .checkbox-group a {
            color: #ff6b35;
            text-decoration: none;
        }
        
        .btn {
            width: 100%;
            padding: 12px;
            background: #ff6b35;
            color: white;
            border: none;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }
        
        .btn:hover {
            background: #e55a2a;
        }
        
        .login-link {
            text-align: center;
            margin-top: 20px;
            font-size: 13px;
            color: #7f8c8d;
        }
        
        .login-link a {
            color: #ff6b35;
            text-decoration: none;
            font-weight: 500;
        }
        
        .loading {
            display: none;
            text-align: center;
            margin-top: 20px;
        }
        
        .loading-spinner {
            width: 30px;
            height: 30px;
            border: 3px solid #e0e0e0;
            border-top-color: #ff6b35;
            border-radius: 50%;
            margin: 0 auto 10px;
            animation: spin 0.8s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        small {
            display: block;
            margin-top: 5px;
            font-size: 11px;
            color: #7f8c8d;
        }
        
        hr {
            margin: 20px 0;
            border: none;
            border-top: 1px solid #e0e0e0;
        }
        
        .password-hint {
            background: #fff3cd;
            padding: 8px 12px;
            margin-top: 8px;
            font-size: 11px;
            color: #856404;
        }
        
        @media (max-width: 480px) {
            .register-container {
                padding: 20px;
            }
        }