Futuristic Gradient Code Block

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Futuristic Gradient Code Block</title>
    <style>
        body {
            margin: 0;
            font-family: Arial, sans-serif;
            background: linear-gradient(135deg, rgba(0, 128, 128, 0.6), rgba(128, 0, 128, 0.6));
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        .code-block {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 20px;
            width: 90%;
            max-width: 900px;
            color: #f0f0f0;
            position: relative;
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
        }
        .code-block::before {
            content: '';
            position: absolute;
            top: -25px;
            left: -25px;
            right: -25px;
            bottom: -25px;
            background: linear-gradient(135deg, rgba(0, 128, 128, 0.3), rgba(128, 0, 128, 0.3));
            filter: blur(30px);
            z-index: -1;
        }
        .code-block pre {
            margin: 0;
            padding: 0;
            font-size: 15px;
            line-height: 1.6;
            overflow-x: auto;
            background: transparent;
        }
        .code-block code {
            display: block;
            padding: 20px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #f0f0f0;
            font-family: 'Courier New', Courier, monospace;
        }
        .code-block .toolbar {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
        }
        .code-block .toolbar .icon {
            font-size: 18px;
            color: #f0f0f0;
            cursor: pointer;
            transition: color 0.3s;
        }
        .code-block .toolbar .icon:hover {
            color: #00ffcc;
        }
    </style>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css">
</head>
<body>
    <div class="code-block">
        <div class="toolbar">
            <span class="icon"><i class="fas fa-copy" title="Copy"></i></span>
            <span class="icon"><i class="fas fa-download" title="Download"></i></span>
        </div>
        <pre><code>const greet = () => {
    console.log('Hello, world!');
};
greet();</code></pre>
    </div>
    <script>
        document.querySelector('.fa-copy').addEventListener('click', () => {
            navigator.clipboard.writeText(document.querySelector('code').textContent)
                .then(() => alert('Code copied to clipboard!'))
                .catch(err => console.error('Error copying code:', err));
        });
        document.querySelector('.fa-download').addEventListener('click', () => {
            const blob = new Blob([document.querySelector('code').textContent], { type: 'text/plain' });
            const url = URL.createObjectURL(blob);
            const a = document.createElement('a');
            a.href = url;
            a.download = 'code.txt';
            a.click();
            URL.revokeObjectURL(url);
        });
    </script>
</body>
</html>

Futuristic Gradient Code Block - VexaX