.menu-item {
    position: relative;
}

.menu-item .sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 10px 0;
}

.menu-item:hover .sub-menu {
    display: block;
}

.sub-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sub-menu-level-2 {
    position: relative;
    padding: 8px 15px;
}

.sub-menu-level-2:hover {
    background-color: #f5f5f5;
}

.sub-menu-level-2 .sub-nav-menu {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background: white;
    min-width: 200px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
}

.sub-menu-level-2:hover > .sub-nav-menu {
    display: block;
}

.sub-nav-link {
    color: #333;
    text-decoration: none;
    display: block;
    padding: 8px 15px;
    transition: color 0.3s;
}

.sub-nav-link:hover {
    color: #007bff;
}