/* RESET */
body {
    background: #eee;
    font-family: Arial;
}

/* MENU */
.menu {
    list-style: none;
    display: flex;
    justify-content: center;
    margin-top: 50px;
}

/* ITEM */
.menu-item {
    position: relative;
    padding: 15px 30px;
    background: linear-gradient(to bottom, #1e3cff, #0000cc);
    color: white;
    border-right: 2px solid white;
    cursor: pointer;
    transition: 0.3s;
}

/* hover */
.menu-item:hover {
    background: oldlace;
    color: black;
    transform: scale(1.05);
}

/* active */
.menu-item.active {
    background: oldlace;
    color: black;
}

/* SUB MENU */
.sub-menu {
    list-style: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 220px;

    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;

    transition: 0.3s ease;
}

/* show dropdown */
.menu-item:hover .sub-menu {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* sub item */
.sub-menu li {
    background: linear-gradient(to bottom, #1e3cff, #0000cc);
    padding: 12px;
    border-bottom: 1px solid white;
    color: white;
    transition: 0.3s;
}

/* hover sub */
.sub-menu li:hover {
    background: oldlace;
    color: black;
    padding-left: 20px;
}

/* item nổi bật */
.sub-menu .highlight {
    background: oldlace;
    color: black;
    font-weight: bold;
}