body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

textarea {
    width: 100%;
    height: 120px;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
    margin-bottom: 15px;
}

button {
    padding: 12px 20px;
    background: black;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

#response {
    margin-top: 20px;
    padding: 15px;
    background: #eef;
    border-radius: 6px;
    min-height: 50px;
}