body {
            margin: 0;
            padding: 0;
            font-family: "Cairo", sans-serif;
            background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #fff;
        }

        .container {
            text-align: center;
            width: 90%;
            max-width: 500px;
        }

        .box {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(10px);
            padding: 40px 30px;
            border-radius: 15px;
            box-shadow: 0 0 25px rgba(0,0,0,0.4);
        }

        h1 {
            margin-bottom: 10px;
            font-size: 28px;
        }

        p {
            opacity: 0.8;
            margin-bottom: 30px;
        }

        /* Progress bar */
        .progress {
            width: 100%;
            height: 10px;
            background: rgba(255,255,255,0.1);
            border-radius: 50px;
            overflow: hidden;
        }

        .progress-bar {
            height: 100%;
            width: 0%;
            background: #00c6ff;
            border-radius: 50px;
            transition: width 0.3s ease;
        }

        .percent {
            margin-top: 10px;
            font-size: 14px;
            opacity: 0.7;
        }

        button {
            margin-top: 25px;
            padding: 10px 25px;
            border: none;
            border-radius: 8px;
            background: #00c6ff;
            color: #fff;
            cursor: pointer;
            font-size: 14px;
            transition: 0.3s;
        }

        button:hover {
            background: #0094cc;
        }

        /* Loader animation */
        .loader {
            margin: 20px auto;
            border: 4px solid rgba(255,255,255,0.1);
            border-top: 4px solid #00c6ff;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
        }

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