body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    margin: 0;
    color: #222;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

h1 {
    margin-top: 0;
}

label {
    display: block;
    margin-top: 18px;
    margin-bottom: 8px;
    font-weight: bold;
}

textarea {
    width: 100%;
    min-height: 180px;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    resize: vertical;
    font-size: 14px;
    box-sizing: border-box;
}

button {
    margin-top: 18px;
    padding: 12px 18px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

#status {
    margin-top: 16px;
    font-weight: bold;
}

#output {
    margin-top: 18px;
    white-space: pre-wrap;
    background: #f8f8f8;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #ddd;
}