.qr-container {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            margin-top: 20px;
        }
        
        .form-section {
            background: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
        }
        
        .captcha-box {
            background: #e9ecef;
            padding: 15px;
            border-radius: 5px;
            font-family: 'Courier New', monospace;
            font-size: 18px;
            font-weight: bold;
            text-align: center;
            margin: 10px 0;
        }
        
        .error-message {
            color: #dc3545;
            font-size: 0.875em;
            margin-top: 5px;
        }
        
        .success-message {
            color: #198754;
            font-size: 0.875em;
            margin-top: 5px;
        }
        
        #qrcode canvas {
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        
        .vcard-preview {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 5px;
            padding: 15px;
            font-family: 'Courier New', monospace;
            font-size: 12px;
            white-space: pre-wrap;
            margin-top: 15px;
        }
        
        .type-selector {
            margin-bottom: 25px;
        }
        
        .type-card {
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        
        .type-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }
        
        .type-card.active {
            border-color: #0d6efd;
            background-color: #e7f1ff;
        }
        
        .hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 0;
            margin-bottom: 40px;
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: #0d6efd;
        }