@charset "utf-8";

/*========= ナビゲーションのためのCSS ===============*/

#g-nav {
    /*position:fixed;にし、z-indexの数値を小さくして最背面へ*/
    position: fixed;
    z-index: -1;
    opacity: 0;
    /*はじめは透過0*/
    /*ナビの位置と形状*/
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: #333;
    transition: all 0.3s;
}

/*アクティブクラスがついたら透過なしにして最前面へ*/
#g-nav.panelactive {
    opacity: 1;
    z-index: 999;
}

/*ナビゲーションの縦スクロール*/
#g-nav.panelactive #g-nav-list {
    /*ナビの数が増えた場合縦スクロール*/
    position: fixed;
    z-index: 999;
    width: 100%;
    height: 100vh;
    /*表示する高さ*/
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

/*ナビゲーション*/
#g-nav ul {
    display: none;
    position: absolute;
    z-index: 999;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#g-nav.panelactive ul {
    width: 70%;
    display: block;
}

#g-nav li {
    list-style: none;
    text-align: center;
    padding: 1rem;
    color: #fff;
    font-size: 1rem
}

#g-nav li span {
    color: #666
}


@media screen and (min-width:768px) {
    #g-nav.panelactive ul {
        width: 70%;
        display: block;
    }

#g-nav li {
    font-size: 1.5rem
}

    #g-nav li:first-child,
    #g-nav li:last-child {
        width: 400px;
        margin: 0 auto;
        display: block;
        width: 100%%;
    }


    #g-nav li a:hover {
        color: #fff;
    }
}

/*========= ボタンのためのCSS ===============*/
.openbtn {
    position: fixed;
    z-index: 9999;
    /*ボタンを最前面に*/
    top: 10px;
    right: 10px;
    cursor: pointer;
    width: 50px;
    height: 50px;
}

/*×に変化*/
.openbtn span {
    display: inline-block;
    transition: all .4s;
    position: absolute;
    left: 14px;
    height: 3px;
    border-radius: 2px;
    background-color: #666;
    width: 45%;
}

.openbtn span:nth-of-type(1) {
    top: 15px;
}

.openbtn span:nth-of-type(2) {
    top: 23px;
}

.openbtn span:nth-of-type(3) {
    top: 31px;
}

.openbtn.active span:nth-of-type(1) {
    top: 18px;
    left: 18px;
    transform: translateY(6px) rotate(-45deg);
    width: 30%;
}

.openbtn.active span:nth-of-type(2) {
    opacity: 0;
}

.openbtn.active span:nth-of-type(3) {
    top: 30px;
    left: 18px;
    transform: translateY(-6px) rotate(45deg);
    width: 30%;
}