body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e5e7eb;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    width: 600px;
    background: #020617;
    padding: 20px;
    border-radius: 8px;
}

h1 {
    text-align: center;
    margin-bottom: 16px;
}

textarea {
    width: 100%;
    height: 200px;
    background: #020617;
    color: #e5e7eb;
    border: 1px solid #334155;
    border-radius: 4px;
    padding: 10px;
    resize: vertical;
}

button {
    margin-top: 12px;
    width: 100%;
    padding: 10px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

pre {
    margin-top: 16px;
    background: #020617;
    border: 1px solid #334155;
    padding: 10px;
    border-radius: 4px;
    white-space: pre-wrap;
}

pre.success {
    border: 1px solid #22c55e;
    color: #4ade80;
}

pre.error {
    border: 1px solid #ef4444;
    color: #f87171;
}