#qr-scanner-container {
        max-width: 600px;
        margin: 0 auto;
        padding: 20px;
        text-align: center;
    }
    
    #camera-controls {
        margin-bottom: 20px;
    }
    
    .qr-btn {
        background-color: #0073aa;
        color: white;
        border: none;
        padding: 10px 20px;
        margin: 5px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 16px;
    }
    
    .qr-btn:hover {
        background-color: #005a87;
    }
    
    #camera-select {
        padding: 8px;
        margin: 5px;
        border-radius: 5px;
        border: 1px solid #ccc;
    }
    
    #qr-video {
        border: 2px solid #0073aa;
        border-radius: 10px;
        max-width: 100%;
    }
    
    #qr-result {
        margin-top: 20px;
        padding: 20px;
        border-radius: 10px;
        min-height: 100px;
    }
    
    .result-valid {
        background-color: #d4edda;
        border: 2px solid #c3e6cb;
        color: #155724;
        font-family: Arial, sans-serif;
        font-size: 36px;
        text-align: center;
    }
    
    .result-error {
        background-color: #dc3545;
        border: 2px solid #c82333;
        color: #ffffff;
        font-family: Arial, sans-serif;
        font-size: 36px;
        text-align: center;
    }
    
    .user-info {
        font-size: 24px;
        margin: 10px 0;
    }
    
    .visits-info {
        font-size: 20px;
        margin: 10px 0;
    }
    
    .prize-message {
        color: #0066cc;
        font-size: 24px;
        font-weight: bold;
        text-transform: uppercase;
        margin: 20px 0;
    }
    
    .prize-notification {
        font-size: 18px;
        margin: 20px 0;
    }
    
    #loading {
        text-align: center;
        font-size: 18px;
        color: #666;
    }