.mobile-menu ul li.has-submenu > a.submenu-toggle {
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    cursor: pointer; 
}

.mobile-menu ul li.has-submenu .arrow-down {
    font-size: 0.7em; 
    margin-left: 8px; 
    transition: transform 0.3s ease; 
    display: inline-block; 
}

.mobile-menu ul li.has-submenu > a.submenu-toggle.open .arrow-down {
    transform: rotate(180deg);
}

.mobile-menu ul .submenu {
    list-style: none; 
    padding-left: 0; 
    margin: 0;
    background-color: #f8f8f8; 
    
    max-height: 0;
    opacity: 0;
    visibility: hidden; 
    overflow: hidden;
    
    transition: max-height 0.35s ease-out, 
                opacity 0.3s ease-out, 
                visibility 0s linear 0.35s; /
}

.mobile-menu ul .submenu.open {
    opacity: 1;
    visibility: visible;
    transition: max-height 0.35s ease-out, 
                opacity 0.3s ease-out, 
                visibility 0s linear 0s;
}

.mobile-menu ul .submenu li a {
    padding: 12px 25px 12px 40px; 
    font-size: 0.95em; 
    color: #444; 
    border-bottom: 1px solid #f0f0f0; 
    display: block;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease; 
}

.mobile-menu ul .submenu li:last-child > a {
    border-bottom: none; 
}

.mobile-menu ul .submenu li a:hover {
    background-color: #e9e9e9;
    color: #000;
}

@media (max-width: 480px) {
    .mobile-menu ul .submenu li a {
        padding: 10px 20px 10px 35px; 
        font-size: 0.95em; 
    }
}