.menu-item {
    position: relative;
    display: inline-block;
}

.menu-item::before {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--main-color);
    border-radius: 50px;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.25s linear;
}

.menu-item:hover::before {
    transform: scaleX(1);
    transform-origin: bottom left;
}