.topheader {
    box-shadow: 0 4px 5px var(--navbar-shallow-color);
    position: fixed;
    background-color: var(--theme-color);
    left: 0;
    top: 0;
    width: 100%;
    z-index: 100;
}

.topnav {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    max-width: 980px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 18px;
    font-weight: 500;
    color: var(--primary-color);
}


/*menu*/

.menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu li {
    padding: 0 15px;
}

.menu a {
    color: var(--text-color);
    font-size: 18px;
    font-weight: 500;
    line-height: 50px;
    text-transform: uppercase;
    position: relative;
}

.menu a::after {
    content: "";
    background-color: var(--secundary-color);
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    height: 4px;
    opacity: 0;
    transition: opacity 0.3s;
}

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

.menu a:hover {
    color: var(--primary-color);
}

.open-menu,
.close-menu {
    display: none;
}


/*menu mobile*/

@media(max-width:950px) {
    .menu {
        flex-direction: column;
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        align-items: center;
        background-color: var(--menu-mobile-background-color);
        height: 100%;
        overflow-y: auto;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s;
    }
    .menu li {
        padding: 0;
    }
    .menu a {
        color: var(--text-color-inverse);
        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.selecccion {
        color: var(--secundary-color);
    }
}