.topheader {

    /* ejex  ejey difuminado color */
    box-shadow: 0 4px 5px rgb(181, 155, 235);
    background-color: aliceblue;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;

}

.topnav {

    display: flex;
    justify-content: space-between;
    padding: 10px;
    max-width: 1100px;
    margin: 0 auto;


}

.logo {

    display: flex;
    align-items: center;
    justify-content: flex-start;
    font-weight: 500;
    font-size: 20px;
    gap: 3px;


}


.logotype {
    display: flex;
    justify-content: center;
    font-size: 20px;
    padding-left: 20px;
    color: purple;
    font-weight: bold;
}

.lang{

    width: 30px;
    padding: 0;
    
    border-radius: 50%;  

}

.selected-lang{
    box-shadow: 0 3px 15px cyan;
}

/*MENU*/
.menu {

    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;

}

.menu li {
    padding: 0 15px;

}

.menu a {

    font-size: 18px;
    font-weight: 500;
    line-height: 50px;
    text-transform: uppercase;
    position: relative;

}

.menu a::after {

    content: "";
    /* obligatorio*/
    background-color: rgb(52, 210, 213);
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    height: 4px;
    opacity: 0;
    transition: opacity 0.3s;

}

.menu a.selected::after,
.menu a:hover::after {
    opacity: 0.8;
}

.menu a:hover {
    color: blueviolet;
}


.open-menu,
.close-menu {

    display: none;
}




@media (max-width: 990px) {

    .menu {
        
        flex-direction: column;
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        align-items: center;
        background-color: rgb(113, 98, 213);
        height: 100%;
        overflow-y: auto;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s;

    }

    .menu li {
        padding: 0;
    }

    .menu a {
        color: aliceblue;
        line-height: 70px;
        font-size: 25px;


    }

    .open-menu,
    .close-menu {

        display: block;
        border: none;
        background: none;
        cursor: pointer;

    }

    .close-menu {

        align-self: flex-end;
        padding: 20px 15px;
    }

    .menu_opened {

        opacity: 1;
        pointer-events: all;
    }

    .open-menu:focus:not(:focus-visible),
    .close-menu:focus:not(:focus-visible) {
        outline: none;
    }

    .menu a::after {
        content: none;

    }

    .menu a:hover,
    .menu a.selected {
        color: aqua;
    }

}