.navbar {
    position: fixed;
    top: 0em;
    left: 0em;

    height: 6em;
    width: 100%;

    z-index: 99;

    display: flex;
    flex-direction: row;

    justify-content: flex-start;
    align-items: center;

    padding: 1em 0em;
}

.navbar #show-responsive {
    background-color: transparent;
    border: none;
    outline: none;
    cursor: pointer;

    display: none;
}

.navbar #hide-responsive {
    background-color: transparent;
    border: none;
    outline: none;
    cursor: pointer;
    
    display: none;
}

.navbar #main-navbar-logo {
    height: auto;
    padding: 0em 1em;
    opacity: 0; 
}

.navbar ul {
    display: flex;
    flex-direction: row;

    justify-content: space-between;
    align-items: center;

    flex-wrap: nowrap;

    margin-block-start: 0em;
    margin-block-end: 0em;
    padding: 0em;
    gap: 0em;

    opacity: 0;

    list-style: none;
}

.navbar li a:before ,
.navbar li a:after {
    position: relative;
    top: 0em;
    left: 0em;

    height: 1em;
    width: 1em;

    content: '';

    opacity: 0;

    transition: all 0.5s ease-in-out;
}

.navbar li a:before {
    float: left;

    border-left: 0.3em solid;
    border-top: 0.3em solid;

    transform: translate(0.6em, -0.5em);
}

.navbar li a:after {
    float: right;

    border-right: 0.3em solid;
    border-bottom: 0.3em solid;

    transform: translate(-0.6em, .3em);
}

.navbar li a:hover,
.navbar li a:hover:before,
.navbar li a:hover:after {
    
    opacity: 1;
}

.navbar li.link-selected a,
.navbar li.link-selected a:before,
.navbar li.link-selected a:after {
    font-weight: bolder;
    opacity: 1;
}

.navbar li a:hover:before {
    transform: translate(-0.5em, -1em);
}

.navbar li a:hover:after {
    transform: translate(0.5em, 1em);
}

@media screen and (max-width: 1366px) {
    
}

@media screen and (max-width: 768px) {
    .navbar {
        justify-content: center;
    }

    .navbar ul {
        display: none;
    }

    .navbar #show-responsive {
        display: flex;
        
        font-size: 2em;
        
        animation: animation-show-hamburger 1s forwards ease-in-out;
    }
}

@media screen and (max-width: 480px) {
    
}

.navbar.responsive {
    display: flex;
    flex-direction: column;

    justify-content: flex-start;
    align-items: center;

    height: auto;

    gap: 1em;

    animation: animation-show-responsive-navbar 1s forwards ease-in-out;
}

.navbar.responsive #show-responsive {
    display: none;
}

.navbar.responsive #hide-responsive {
    display: block;
    opacity: 0;

    font-size: 3em;
    
    animation: animation-show-close 1s forwards ease-in-out;
    animation-delay: 1s;
}

.navbar.responsive ul {
    display: flex;

    flex-direction: column;
    align-items: center;
    gap: 2em;

    padding-inline-start: 0;

    animation: move2bottom 1s forwards ease-in-out;
}

@keyframes animation-show-responsive-navbar {
    0% {
        opacity: 0;
        max-height: 0em;
    }

    100% {
        max-height: 32em;
        opacity: 1;
    }    
}
@keyframes animation-show-hamburger {
    0% {
        opacity: 0;

        transform:
            rotate(90deg);
    }
      
    100% {
        opacity: 1;
    }
}

@keyframes animation-show-close {
    0% {
        opacity: 0;
        transform:
            rotate(90deg);       
    }
      
    100% {
        opacity: 1;
    }
}