/* Navbar Desktop */
.nav-item {
    position: relative;
}

.submenu {
    display: none; 
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #2d3748;
    border: 1px solid #ddd;
    z-index: 50;
    padding: 0.5rem;
    min-width: 200px;
    border-radius: 0.25rem;
}

/* Exibe o submenu ao passar o mouse no item "Sistemas" no desktop */
@media (min-width: 768px) {
    .nav-item:hover > .submenu {
        display: block;
    }
}