body {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: auto;
    background-color: white;
    color: black;
}

input {
    margin: 3px;
    padding: 3px;
    border: 1px solid #aaa;
    border-radius: 3px;
}

section {
    border: 1px solid #ccc;
    padding: 10px;
    margin: 10px 0;
}

button {
    margin: 3px;
    padding: 5px 8px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

.footer {
    text-align: center;
    font-size: 14px;
    color: black;
    box-sizing: border-box;
    padding: 10px 0;
    width: 100%;
    margin-top: 20px;

}

.footer p,a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
}

.footer a:hover {
    text-decoration: none;
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #121212;
        color: #eee;
    }
    input {
        background-color: #1e1e1e;
        color: #eee;
        border: 1px solid #555;
    }
    button {
        background-color: #333;
        color: #eee;
    }
    button:hover {
        background-color: #444;
    }
    section {
        border-color: #555;
    }
}

@media (max-width: 600px) {
    body {
        padding: 8px;
    }
    section {
        padding: 12px;
        margin: 10px 0;
    }
    input {
        font-size: 16px;
        padding: 10px;
    }
    button {
        font-size: 18px;
        padding: 12px;
    }
}