/* main.css */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f5f5;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            line-height: 1.6;
        }
        
        .container {
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            width: 100%;
            overflow: hidden;
        }
        
        .header {
            background: #ffffff;
            color: #212529;
            padding: 30px;
            text-align: center;
            border-bottom: 1px solid #e9ecef;
            transition: background-color 0.3s ease;
        }

        .header.dark-mode {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
        }

        .header.dark-mode .client-name,
        .header.dark-mode .page-subtitle {
            color: #ffffff;
        }

        .client-logo {
            width: 100%;
            max-width: 300px; /* Maximum width for banner logos */
            height: auto;
            min-height: 60px;
            max-height: 120px;
            margin: 0 auto 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        /* Square/Portrait logo style */
        .client-logo.logo-square {
            width: 120px;
            height: 120px;
            background: #ffffff;
            border: 1px solid #e0e0e0;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        /* Banner/Landscape logo style */
        .client-logo.logo-banner {
            width: 100%;
            max-width: 280px;
            height: auto;
            min-height: 50px;
            max-height: 80px;
            background: transparent;
            border: none;
            padding: 10px 20px;
            box-shadow: none;
        }

        /* Landscape logo (not quite banner, not quite square) */
        .client-logo.logo-landscape {
            width: 100%;
            max-width: 200px;
            height: auto;
            min-height: 60px;
            max-height: 100px;
            background: #ffffff;
            border: 1px solid #e9ecef;
            border-radius: 8px;
            padding: 15px 25px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
        }

        /* Dark background for light logos */
        .client-logo.needs-dark-bg {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            border-color: #34495e;
            padding: 25px;
        }

        .client-logo img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .client-logo img.loaded {
            opacity: 1;
        }

        .client-name {
            font-size: 24px;
            font-weight: 600;
            color: #212529;
            margin-bottom: 5px;
            transition: color 0.3s ease;
        }

        .page-subtitle {
            font-size: 14px;
            color: #6c757d;
            transition: color 0.3s ease;
        }
        
        .content {
            padding: 40px 30px;
        }
        
        .email-display {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            text-align: center;
            font-size: 16px;
            color: #495057;
        }
        
        .email-display strong {
            color: #212529;
            font-weight: 600;
        }
        
        h1 {
            color: #212529;
            font-size: 28px;
            margin-bottom: 15px;
        }
        
        .intro-text {
            color: #6c757d;
            margin-bottom: 30px;
            font-size: 15px;
        }
        
        .option-card {
            border: 2px solid #e9ecef;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 15px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        
        .option-card:hover {
            border-color: #4285f4;
            background: #f8f9fa;
        }
        
        .option-card.selected {
            border-color: #4285f4;
            background: #f8f9fa;
        }
        
        .option-card input[type="radio"] {
            margin-right: 12px;
            width: 18px;
            height: 18px;
            cursor: pointer;
        }
        
        .option-card label {
            cursor: pointer;
            display: flex;
            align-items: start;
        }
        
        .option-content {
            flex: 1;
        }
        
        .option-title {
            font-size: 16px;
            font-weight: 600;
            color: #212529;
            margin-bottom: 5px;
        }
        
        .option-description {
            font-size: 14px;
            color: #6c757d;
        }
        
        .feedback-section {
            margin: 30px 0;
        }
        
        .feedback-section label {
            display: block;
            font-weight: 600;
            color: #495057;
            margin-bottom: 8px;
            font-size: 14px;
        }
        
        .feedback-section textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            font-family: inherit;
            font-size: 14px;
            resize: vertical;
            min-height: 80px;
            transition: border-color 0.2s;
        }
        
        .feedback-section textarea:focus {
            outline: none;
            border-color: #4285f4;
        }
        
        .button-group {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }
        
        button {
            flex: 1;
            padding: 14px 24px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
            border: none;
        }
        
        .btn-primary {
            background: #4285f4;
            color: white;
        }
        
        .btn-primary:hover {
            background: #3367d6;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }
        
        .btn-secondary {
            background: #e9ecef;
            color: #495057;
        }
        
        .btn-secondary:hover {
            background: #dee2e6;
        }
        
        .footer {
            background: #f8f9fa;
            padding: 20px 30px;
            text-align: center;
            font-size: 13px;
            color: #6c757d;
        }
        
        .footer a {
            color: #4285f4;
            text-decoration: none;
        }
        
        .footer a:hover {
            text-decoration: underline;
        }
        
        @media (max-width: 600px) {
            .content {
                padding: 30px 20px;
            }
            
            h1 {
                font-size: 24px;
            }
            
            .button-group {
                flex-direction: column;
            }
        }