<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>File Not Supported</title>

<style>
    body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        background: #0b0b0b;
        color: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        text-align: center;
    }

    .container {
        max-width: 320px;
        padding: 20px;
        display: none; /* hidden initially */
    }

    .icon {
        width: 80px;
        height: 80px;
        margin-bottom: 20px;
        opacity: 0.85;
    }

    h1 {
        font-size: 20px;
        font-weight: 600;
        margin-bottom: 10px;
    }

    p {
        font-size: 14px;
        color: #aaa;
        line-height: 1.5;
        margin-bottom: 30px;
    }

    .button {
        display: inline-block;
        background: linear-gradient(90deg, #4da3ff, #2d6cff);
        color: #fff;
        padding: 14px 24px;
        border-radius: 25px;
        font-weight: 600;
        font-size: 16px;
        text-decoration: none;
    }

    /* Loader */
    .loader {
        width: 60px;
        height: 60px;
        border: 5px solid rgba(77, 163, 255, 0.2);
        border-top: 5px solid #4da3ff;
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
</style>
</head>

<body>

<!-- Loader -->
<div id="loading" class="loader"></div>

<!-- Main Content -->
<div id="content" class="container">
    <img class="icon" src="https://cdn-icons-png.flaticon.com/128/607/607674.png" alt="Document icon">

    <h1>This file can’t be viewed on this device.</h1>

    <p>
        This file is optimized for desktop viewing.
        Open it on your computer to view the full experience.
    </p>

</div>

<script>
    // Simulate loading
    setTimeout(() => {
        document.getElementById("loading").style.display = "none";
        document.getElementById("content").style.display = "block";
    }, 2000); // 2 seconds
</script>

</body>
</html>