nav {
    width: 100%;
    height: fit-content;
    padding: 2vh 15vw;
    box-sizing: border-box;
    
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav img {
    width: 8vw;
    z-index: 30;
}

nav #active {
    font-weight: bold;
}

nav .nav-row {
    display: flex;
    justify-content: center;
    align-items: center;
}

nav .dropdown {
    position: relative;
    display: inline-block;
    margin: 0 1vw;
    cursor: pointer;
}

nav .dropdown span {
    font-family: 'Inconsolata';
    font-size: 1.3vw;
    color: #333333;
    transition: 0.2s;
}

nav .dropdown-content {
    display: none;
    position: absolute;
    background-color: #FFFFFF;
    min-width: 160px;
    padding: 12px 16px;
    z-index: 1;
}

nav .dropdown-content a {
    font-family: 'Inconsolata';
    font-size: 1.3vw;
    color: #333333;
    margin: 1vh 0;
}

nav .dropdown:hover span {
    color: #AAA;
}

nav .dropdown:hover .dropdown-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

nav #book {
    cursor: pointer;
    font-family: 'Inconsolata';
    font-size: 1.3vw;
    color: #333333;
}

nav #mobile-hamburger {
    display: none;
}


nav #mobile-menu {
    display: none;
}

@media only screen and (max-width: 1024px) {
    
    nav {
        padding: 2vh 5vw;
    }

    nav img {
        width: 20vw;
    }

    nav .nav-row {
        display: none;
    }
    nav #book {
        display: none;
    }

    nav #mobile-hamburger {
        display: block;
    }
    
    #mobile-hamburger {
        display: inline-block;
        cursor: pointer;
        position: relative;
        width: 6vw;
        height: 2.7vh;
        z-index: 30;
    }
    
    #mobile-hamburger #box-1, #mobile-hamburger #box-2,  #mobile-hamburger #box-3,  #mobile-hamburger #box-4 {
        width: 6vw;
        height: 0.5vh;
        background-color: #333;
        transition: 0.4s;
        border-radius: 5px;
    }
    
    #mobile-hamburger #box-1 {
        position: absolute;
        top: 0;
        left: 0;
    }
    
    #mobile-hamburger #box-2 {
        position: absolute;
        top: 1.1vh;
        left: 0;
    }
    
    #mobile-hamburger #box-3 {
        position: absolute;
        top: 1.1vh;
        left: 0;
    }
    
    #mobile-hamburger #box-4 {
        position: absolute;
        top: 2.2vh;
        left: 0;
    }
    
    .open #box-1 {
        opacity: 0;
        -webkit-transform: scale( 0.5 ) translateX( 0 );
        transform: scale( 0.5 ) translateX( 0 );
    }

    .open #box-2 {
        -webkit-transform: rotate( -45deg );
        transform: rotate( -45deg );
    }

    .open #box-3 {
        -webkit-transform: rotate( 45deg );
        transform: rotate( 45deg );
    }

    .open #box-4 {
        opacity: 0;
        -webkit-transform: scale( 0.5 ) translateX( 0 );
        transform: scale( 0.5 ) translateX( 0 );
    }

    #mobile-menu {
        display: block !important;
        width: 100vw;
        height: 80vh;
        padding: 10vh 0;

        position: fixed;
        left: -100vw;
        top: 0;

        z-index: 20;

        background-color: #fff;

        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-content: flex-start;

        transition: 0.4s cubic-bezier( 0.77, 0.2, 0.05, 1.0 );
        overflow: auto;
    }

    .mobile-menu-open {
        left: 0 !important;
    }

    #mobile-menu ul {
        display: flex;
        flex-direction: column;
        align-items: flex-start;

        margin-top: auto;
        margin-left: 10vw;
    }

    #mobile-menu #main-list {
        margin: 0 0 0 10vw;
    }
    
    #mobile-menu ul li {
        width: 100%;
        text-align: start;
        box-sizing: border-box;
        margin: 2vh 0;
    }
    
    #mobile-menu ul li a {
        margin: 3vh 0;
    
        color: #3E4756;
        font-family: 'Inconsolata';
        font-size: 5vw;
    
        cursor: pointer;
    }

    ul li #active-mobile {
        color: #068CDD !important;
    }
}

@media screen and (orientation: landscape) {
    
    #mobile-hamburger #box-1, #mobile-hamburger #box-2,  #mobile-hamburger #box-3,  #mobile-hamburger #box-4 {
        width: 3vw;
        height: 1vh;
    }
    
    #mobile-hamburger #box-2 {
        top: 2vh;
    }
    
    #mobile-hamburger #box-3 {
        top: 2vh;
    }
    
    #mobile-hamburger #box-4 {
        top: 4vh;
    }
    
    #mobile-menu ul li {
        margin: 1vh 0;
    }
    
    #mobile-menu ul li a {
        margin: 1vh 0;
        font-size: 3vw;
    }
}