body {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f4f4f9;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            color: #333;
        }

        .container {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            max-width: 500px;
        }

        .icon {
            font-size: 50px;
            margin-bottom: 20px;
        }

        h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            color: #2c3e50;
        }

        p {
            font-size: 1.1rem;
            line-height: 1.6;
            color: #7f8c8d;
        }

        .loader {
            border: 4px solid #f3f3f3;
            border-top: 4px solid #3498db;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 2s linear infinite;
            margin: 20px auto;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .footer {
            margin-top: 30px;
            font-size: 0.9rem;
            color: #bdc3c7;
        }