body {
            font-family: Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .container {
            background-color: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
            text-align: center;
            max-width: 600px;
        }
        h1 {
            color: #667eea;
            margin-bottom: 20px;
        }
        .welcome-message {
            font-size: 18px;
            color: #333;
            margin: 20px 0;
            padding: 15px;
            background-color: #f0f0f0;
            border-radius: 5px;
        }
        .user-name {
            font-weight: bold;
            color: #667eea;
            font-size: 22px;
        }
        .logout-link {
            display: inline-block;
            margin-top: 30px;
            padding: 12px 30px;
            background-color: #e74c3c;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            font-weight: bold;
            transition: background-color 0.3s;
        }
        .logout-link:hover {
            background-color: #c0392b;
        }
        .admin-badge {
            background-color: #667eea;
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 20px;
            font-size: 14px;
        }