body.dark-mode {
    background-color: #121212;
    color: #ffffff;
}

body.dark-mode .navbar, 
body.dark-mode .footer {
    background-color: #1e1e1e !important;
    color: #ffffff;
}

body.dark-mode .card {
    background-color: #2a2a2a;
    color: #ffffff;
}

body.dark-mode .card .title,
body.dark-mode .card .subtitle {
    color: #ffffff !important;
}