.section-navbar {
    width: 100%;
    max-width: 180px;
    margin: auto;
    height: 60px;
    position: fixed;
    bottom: 3%;
    right: 0;
    z-index: 5;
    transition: all 550ms ease-in-out;
}

.toogle-btn-menu {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin: auto;
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    border: none;
    background: none;
    background-color: rgba(121, 85, 72, 1);
    color: #fff;
    cursor: pointer;
    text-transform: uppercase;
    outline-style: none !important;
    z-index: 2;
    box-shadow: 2px 2px 4px rgba(0, 0, 0, .5);
}

.toogle-btn-menu.opened, .toogle-btn-menu.closed {
    background-position: center;
    background-repeat: no-repeat;
    background-size: 20px;
}

.toogle-btn-menu.closed {
    background-image: url(../images/icons/bars.svg);
}

.toogle-btn-menu.opened {
    background-image: url(../images/icons/closed.svg);
}

.nav-menu {
    width: 26.5em;
    height: 23em;
    margin: auto;
    position: absolute;
    right: 0;
    bottom: -50%;
    left: 0;
    background: transparent;
    opacity: 0;
    -webkit-transition: all .3s ease;
    -moz-transition: all .3s ease;
    transition: all .3s ease;
    -webkit-transform: scale(0.1);
    -moz-transform: scale(0.1);
    -ms-transform: scale(0.1);
    transform: scale(0.1);
    pointer-events: none;
    overflow: hidden;
    z-index: 1;
}

.nav-menu.open-nav {
    border-radius: 50%;
    opacity: 1;
    -webkit-transition: all .3s ease;
    -moz-transition: all .3s ease;
    transition: all .3s ease;
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    pointer-events: auto;
}

.items-menu {
    list-style: none;
}

/* para evitar espaço extra de âncoras de ser clicável */

.items-menu::after {
    content: ".";
    display: block;
    font-size: 2em;
    width: 6.2em;
    height: 6.2em;
    position: absolute;
    left: 50%;
    margin-left: -3.1em;
    top: 50%;
    margin-top: -3.1em;
    border-radius: 50%;
    z-index: 1;
    color: transparent;
}

.item-menu {
    width: 10em;
    height: 10em;
    margin-left: -1.1em;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    overflow: hidden;
    font-size: 1.5em;
    -webkit-transition: all .3s ease;
    -moz-transition: all .3s ease;
    transition: all .3s ease;
    -webkit-transform: rotate(76deg) skew(60deg);
    -moz-transform: rotate(76deg) skew(60deg);
    -ms-transform: rotate(76deg) skew(60deg);
    transform: rotate(76deg) skew(60deg);
    -webkit-transform-origin: 100% 100%;
    -moz-transform-origin: 100% 100%;
    transform-origin: 100% 100%;
    /* pointer-events: none; */
    z-index: 3;
}
.mask-item-menu{
    width: 100%;
    height: 100%;
    margin: auto;
    position: absolute;
    top:0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 5;
    cursor: pointer;
}

.nav-menu.open-nav .item-menu {
    -webkit-transition: all .3s ease .3s;
    -moz-transition: all .3s ease .3s;
    transition: all .3s ease .3s;
}

.nav-menu.open-nav .item-menu:first-child {
    -webkit-transform: rotate(-20deg) skew(60deg);
    -moz-transform: rotate(-20deg) skew(60deg);
    -ms-transform: rotate(-20deg) skew(60deg);
    transform: rotate(11deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(2) {
    -webkit-transform: rotate(12deg) skew(60deg);
    -moz-transform: rotate(12deg) skew(60deg);
    -ms-transform: rotate(12deg) skew(60deg);
    transform: rotate(43deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(3) {
    -webkit-transform: rotate(44deg) skew(60deg);
    -moz-transform: rotate(44deg) skew(60deg);
    -ms-transform: rotate(44deg) skew(60deg);
    transform: rotate(75deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(4) {
    -webkit-transform: rotate(76deg) skew(60deg);
    -moz-transform: rotate(76deg) skew(60deg);
    -ms-transform: rotate(76deg) skew(60deg);
    transform: rotate(107deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(5) {
    -webkit-transform: rotate(108deg) skew(60deg);
    -moz-transform: rotate(108deg) skew(60deg);
    -ms-transform: rotate(108deg) skew(60deg);
    transform: rotate(139deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(6) {
    -webkit-transform: rotate(140deg) skew(60deg);
    -moz-transform: rotate(140deg) skew(60deg);
    -ms-transform: rotate(140deg) skew(60deg);
    transform: rotate(140deg) skew(60deg);
}

.nav-menu.open-nav .item-menu:nth-child(7) {
    -webkit-transform: rotate(172deg) skew(60deg);
    -moz-transform: rotate(172deg) skew(60deg);
    -ms-transform: rotate(172deg) skew(60deg);
    transform: rotate(172deg) skew(60deg);
}

.item-menu-link {
    position: absolute;
    right: -7.25em;
    bottom: -7.25em;
    display: block;
    width: 14.5em;
    height: 14.5em;
    border-radius: 50%;
    text-align: center;
    text-decoration: none;
    font-size: 1.2em;
    line-height: 2;
    color: #fff;
    background: #32b6a4;
    background: -webkit-radial-gradient(transparent 35%, #32b6a4 35%);
    background: -moz-radial-gradient(transparent 35%, #32b6a4 35%);
    background: radial-gradient(transparent 35%, #32b6a4 35%);
    -webkit-transform: skew(-60deg) rotate(-75deg) scale(1);
    -moz-transform: skew(-60deg) rotate(-75deg) scale(1);
    -ms-transform: skew(-60deg) rotate(-75deg) scale(1);
    transform: skew(-60deg) rotate(-75deg) scale(1);
    /* -webkit-backface-visibility: hidden;
    backface-visibility: hidden; */
    /* pointer-events: auto; */
}

.txt-menu {
    position: relative;
    top: 1.8em;
    display: block;
    font-size: .4em;
    font-weight: 700;
    text-transform: uppercase;
}

.mask-item-menu:hover + .item-menu-link,
.mask-item-menu:hover + .item-menu-link:active,
.mask-item-menu:hover + .item-menu-link:focus {
    background: -webkit-radial-gradient(transparent 35%, rgba(50, 182, 164, .75) 35%);
    background: -moz-radial-gradient(transparent 35%, rgba(50, 182, 164, .75) 35%);
    background: radial-gradient(transparent 35%, rgba(50, 182, 164, .75) 35%);
    color: #fff;
    text-decoration: none;
}
.item-menu-link:hover{
    color: #fff;
    text-decoration: none;
}

.item-menu-link:focus {
    position: fixed;
    /* Corrigir o erro de deslocamento em navegadores webkit ao usar a tecla tab */
}

@media only screen and (max-width: 480px) {
    .nav-menu {
        font-size: .65em;
        height: 21em;
        bottom: -27%;
        left: -2%;
    }
    .toogle-btn-menu {
        font-size: 1em;
        width: 50px;
        height: 50px;
    }
    .section-navbar {
        max-width: 80px;
    }
}