body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    padding: 20px;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 30px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    min-height: 100vh; /* ❗️buat container penuh tinggi layar */
}

h1 {
    text-align: center;
    margin-bottom: 30px;
}

form {
    text-align: center;
    margin-bottom: 20px;
}

input[type="text"] {
    width: 60%;
    padding: 10px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    margin-left: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

#live-output {
    background-color: #000;
    color: #0f0;
    padding: 15px;
    white-space: pre-wrap;
    border: 1px solid #ccc;
    margin-top: 10px;
}