header {
    width: 100%;
    margin: 0 auto;
    max-width: 580px;
    height: 72px;
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 99999;
    transition: all 1.5s;
}

header.off {
    width: 72px;
    transition: all 1.5s;
    /* transition: all .8s; */
}


header .header_inner {
    display: flex;
    /* align-items: center;
    justify-content: space-between; */
    width: 100%;
    max-width: 580px;
    height: 100%;
    border-radius: 72px;
    padding: 0 20px 0 36px;
    background-color: var(--black);
    transition: all 1s;
}

header .header_inner h1 a img {
    width: 58px;
}


header .sns_wrap {
    display: flex;
    height: 100%;
    position: absolute;
    top: 0;
    left: calc(100% + 20px);
    opacity: 1;
    transition: all .8s;
    transition-delay: 1s;
}

header.off .sns_wrap {
    opacity: 0;
}

header .sns_wrap li {
    width: 72px;
    height: 100%;
    opacity: 1;
}

header .sns_wrap li:first-child {
    margin-right: 20px;
}

header .sns_wrap li a {
    width: 100%;
    height: 100%;
    border-radius: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--black);
}


/* 애니메이션 적용 전 */
header .header_inner h1 {
    display: flex;
    position: absolute;
    left: 36px;
    top: 50%;
    transform: translateY(-50%);
    transition: all 1s;
    transition-delay: all .5s, opacity 0;
}

header.off .header_inner h1 {
    left: 50%;
    transform: translate(-50%, -50%);
}

header .header_inner .lang_btn {
    background-color: #fff;
    font-size: 12px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #222;
    position: absolute;
    top: 50%;
    left: calc(100% - 40px);
    transform: translate(-50%, -50%);
    transition: all 1s, opacity .5s;
    opacity: 1;
    transition-delay: all .5s, opacity 0;
}

header.off .header_inner .lang_btn {
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
}

header .header_inner nav {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 1s;
    opacity: 1;
}

header.off .header_inner nav {
    opacity: 0;
    transition: opacity .5s;
}

@media screen and (max-width: 1200px) {
    header {
        height: 60px;
        max-width: 500px;
    }

    header .header_inner {
        padding: 0 12px 0 36px;
        max-width: 500px;
    }

    header .sns_wrap li {
        width: 60px;
    }

    header .sns_wrap li a {
        padding: 17px;
    }

    header .sns_wrap li img {
        width: 100%;
    }
}

@media screen and (max-width: 840px) {
    header {
        height: 50px;
        max-width: 400px;
    }

    header.off {
        width: 80px;
    }

    header .header_inner {
        padding: 0 8px 0 20px;
        max-width: 400px;
    }

    header .header_inner .lang_btn {
        width: 35px;
        height: 35px;
        left: calc(100% - 24px);
    }

    header .header_inner h1 {
        left: 18px;
    }

    header .sns_wrap {
        left: calc(100% + 10px);
    }

    header .sns_wrap li {
        width: 50px;

    }

    header .sns_wrap li:first-child {
        margin-right: 10px;
    }

    header .sns_wrap li a {
        padding: 12px;
    }

    header .sns_wrap li img {
        width: 100%;
    }
}

@media screen and (max-width: 750px) {
    header {
        display: flex;
        max-width: none;
        justify-content: center;
        padding: 0 10px;
    }

    header .header_inner {
        position: relative;
        margin-right: 10px;
    }

    header.off .sns_wrap {
        position: absolute;
    }

    header .sns_wrap {
        position: static;
    }
}

@media screen and (max-width:540px) {
    header .header_inner h1 a img {
        width: 45px;
    }

    header .header_inner nav a {
        font-size: 14px;
    }
}