.nav-link {
    position: relative;
    color: #333;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #2196f3;
}

.nav-link.active {
    color: #2196f3 !important;
    font-weight: bold;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2196f3;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}