body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 700px;
    width: 100%;
    text-align: center;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

input,
textarea {
    width: calc(100% - 22px);
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

textarea {
    height: 100px;
    resize: vertical;
}

button {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.result {
    margin-top: 20px;
    font-size: 18px;
}

.color-red {
    color: red
}

.color-green {
    color: green
}

.copyright {
    font-size: 12px;
    color: #aaa;
    margin-top: 20px;
}

#fileInput {
    display: block;
    margin-top: 10px;
}