header {
    transition: background-color 0.3s, padding 0.3s;
}

header.scrolled {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 10px 0;
}

footer {
    background: linear-gradient(135deg, #1f1f1f, #343a40);
    color: #ffffff;
    padding: 20px 0;
}

footer a {
    color: #ffffff;
    text-decoration: underline;
}

footer a:hover {
    color: #d4d4d4;
    text-decoration: none;
}

footer p {
    margin: 0;
    font-size: 0.9rem;
}