.nav-treeview .nav-link {
    font-size: 15px;
    padding-top: 5px;
    padding-bottom: 5px;
    color: #333 !important;
    font-weight: 500; 
}

.nav-treeview .nav-link.active {
    background-color: #cce5ff !important; 
    color: #004085 !important;            
    font-weight: 600;
    border-left: 4px solid #007bff;
}

.nav-treeview {
    background-color: #eef1f5 !important;
}

.nav-item i {
    margin-right: 4px;
}