header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100vw;
    z-index: 1000;
    text-transform: uppercase;
    background: var(--app-header-bg);
    color: var(--app-header-link);
}

header a,
header li,
header a:visited {
    color: var(--app-header-link);
    margin: 0px 8px;
    font-weight: 900;
}

header a:hover,
header li:hover {
    color: var(--app-header-link2);
    cursor: pointer;
}

/* header a {
    text-decoration: none;
} */

header li {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    letter-spacing: 2px;
}

.header-drop {
    position: relative;
    margin: 0px 8px;
    font-weight: 900;
    padding: 12px;
}

.header-drop-content {
    display: flex;
    flex-direction: column;
    position: absolute;
    width: fit-content;
    height: 0;
    transition: all 0.2s ease-in;
    overflow: hidden;
}

.header-drop:hover .header-drop-content {
    height: fit-content;
    border: 1px solid var(--app-header-link);
    background: var(--app-header-bg);
    padding: 8px;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    border-bottom: 1px var(--app-header-link) solid;
    width: 100%;
}

.main-nav a {
    position: relative;
    padding: 12px;
}

.main-nav a::after {
    content: "";
    position: absolute;
    height: 3px;
    width: 100%;
    top: 80%;
    left: 0;
    z-index: 200;
    background-color: var(--app-header-link2);
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

.main-nav a:hover::after {
    opacity: 1;
}

/* burger */
#link {
    display: none;
    height: 30px;
    width: 30px;
    position: relative;
}

.burger-envelop {
    position: absolute;
    top: -45%;
    left: -50%;
    transform: translateX(15%);
    aspect-ratio: 1/1;
    height: 45px;
    background-color: var(--app-color-light);
    padding: 8px;
    border-radius: 50%;
    border: 3px solid var(--app-header-link2);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 0;
}

@media screen and (max-width: 770px) {
    #link {
        display: block;
        position: relative;
        position: absolute;
        right: 30px;
        top: 25px;
        z-index: 500;
    }



    .main-nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        overflow: hidden;
        width: 0;
        top: 0;
        padding-top: 45px;
        height: fit-content;
        right: 0;
        background-color: var(--app-header-bg);
        transform: translateX(110%);
        border-top: 1px var(--app-header-link) solid;
    }

    li {
        text-align: center;
    }

    #link.open+ul {
        width: 100%;
        transform: translateX(0);
    }

    .header-drop {
        display: block;
        position: relative;
        height: fit-content;
    }

    .header-drop-content {
        display: none;
        height: fit-content;
        width: 100%;
        text-align: center;
        border: none;
        position: relative;
        margin-top: var(--app-size-1);
        background: var(--app-header-bg);
    }

    .header-drop:hover .header-drop-content {
        display: block;
    }

    .header-drop-content a {
        display: block;
    }
}