.nav-link {
    position: relative;
    color: #6b7280; 
    transition: color 0.3s;
    text-decoration: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #2563eb; 
    transition: width 0.3s ease-in-out;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: #2563eb;
}


.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: #2563eb;
    font-weight: 700;
}