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

header {
    background: #1f4e79;
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
}

header img {
    height: 60px;
    margin-right: 15px;
}

main {
    max-width: 900px;
    margin: 30px auto;
    background: white;
    padding: 30px;
    border-radius: 6px;
}

label {
    font-weight: bold;
}

textarea {
    width: 100%;
    height: 150px;
    padding: 10px;
    margin: 15px 0;
    font-size: 15px;
}

button {
    width: 100%;
    padding: 12px;
    background: #1f4e79;
    color: white;
    border: none;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #163b5c;
}

.result {
    margin-top: 30px;
}

.result pre {
    background: #f9f9f9;
    padding: 20px;
    white-space: pre-wrap;
    font-size: 14px;
    line-height: 1.6;
}

footer {
    text-align: center;
    padding: 15px;
    background: #eaeaea;
    font-size: 13px;
}