nav {
    --backcolor: #3a3a3a;
    --button-color: #444444;
    
    --backcolor: #336bca;
    --button-color: #3f78da;

    --backcolor-options: #cacaca;
    --backcolor-selected-option: #3f78da;

    --height-top-bar: 10vh;
}

/* BARRA NAVEGACION SUPERIOR */
.topBar {
    margin: 0;
    padding: 0;
    
    z-index: 100;
    /* position: fixed; */
    
    background-color: var(--backcolor);
    width: 100vw;
    height: var(--height-top-bar);

    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topBar > * {
    box-sizing: border-box;
    height: 100%;
}

.topBar > picture {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1em;
}

.topBar > ul {
    padding: 0em;
    width: 30%;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    list-style: none;
}

/* No hay botones implementados aun */
.topBar > ul > li > button {
    width: 2.5em;
    height: 2.5em;
    border-radius: 100%;

    outline: none;
    border: none;

    background-color: var(--button-color);
    color: white;
}


/* BARRA NAVEGACION INFERIOR */
.opciones {
    background-color: var(--backcolor-options);
    margin: 0;
    padding: 0;
    
    box-sizing: border-box;
    width: 5vw;
    height: 90vh;

    display: flex;
    flex-direction: column;
    /* justify-content: center; */
    align-items: center;
    z-index: 10;
}

.opciones > li {
    list-style: none;
    margin-top: 1em;
    width: 100%;
}

.opciones > li > button {
    /* border-radius: 100%; */
    height: 4em;
    width: 100%;
    padding-top: 0.8em;
    border: none;
    outline: none;
    color: white;
    text-align: center;
    font-size: 11px;
    background-color: var(--backcolor-options);

    display: flex;
    flex-direction: column;
    align-items: center;
}

.option-button--selected {
    background: var(--backcolor-selected-option) !important;
}

.opciones > li > button > i {
    font-size: 16px;
}   


/* EVENTOS DE LOS BOTONES */

.topBar > ul > li > button:hover,
.opciones > li > button:hover {
    transform: scale(1.1);
}

.topBar > ul > li > button:active,
.opciones > li > button:active {
    filter: brightness(1.1);
}