/* Submenu Styles */
.dropdown-submenu {
    position: absolute;
    left: 100%;
    top: 0;
    margin-top: 0;
    min-width: 200px;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 0.375rem;
}

.dropend:hover > .dropdown-menu {
    display: block;
}

.dropdown-item.dropdown-toggle::after {
    margin-left: auto;
}

.dropend .dropdown-toggle::after {
    transform: rotate(-90deg);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .dropdown-submenu {
        position: static;
        left: auto;
        top: auto;
        margin-top: 0.125rem;
        margin-left: 1rem;
        box-shadow: none;
        border: none;
        border-left: 2px solid #dee2e6;
    }
}