body.dark-mode {
    background-color: #121212;
    color: #e6e6e6;
}

.dark-mode .navbar {
    background-color: #1f2a38 !important;
}

.dark-mode .btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.dark-mode .nav-link {
    color: #ddd !important;
}

html, body, .navbar, .btn, .nav-link {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}