body {
    background:#121212;
    color:#eee;
    font-family:Arial,sans-serif;
    margin:0;
    padding:20px;
}

.container {
    max-width:800px;
    margin:auto;
    background:#1e1e1e;
    border-radius:12px;
    padding:20px;
    box-shadow:0 0 20px rgba(0,255,200,0.3);
}

textarea {
    width:100%;
    padding:12px;
    margin-bottom:10px;
    border-radius:8px;
    border:none;
    background:#2b2b2b;
    color:#fff;
    font-family:monospace;
    font-size:14px;
    resize:vertical;
}

button {
    padding:10px 22px;
    border:none;
    border-radius:6px;
    background:#39e09b;
    color:#000;
    font-weight:bold;
    cursor:pointer;
    margin-bottom:10px;
    font-size:14px;
}

button:hover {
    background:#2ac28f;
}