@charset "UTF-8";
/* ベースのスタイル
--------------------------------------------------------- */
body {
    font-family: "Noto Serif JP", "Noto Sans JP", sans-serif;
    line-height: 1.5;
    color: #fff;
}
ul {
    list-style: none;
}
a {
    color: #fff;
    text-decoration: none;
    cursor: pointer;
}
img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}
/* 部品
--------------------------------------------------------- */
/* フォントウェイト */
.medium {
    font-weight: 500;
}
.bold {
    font-weight: 700;
}
/* フォントファミリー */
.noto-serif-jp {
    font-family: "Noto Serif JP", serif;
}
.lato {
    font-family: "Lato", sans-serif;
}
/* 大文字 */
.uppercase {
    text-transform: uppercase;
}
/* セクション */
#about, #works, #contact {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    background-color: rgb(185, 185, 185);
}
/* コンテナ */
.container {
    max-width: 65.5rem;
    margin: 0 auto;
    padding: 5rem 0 6rem;
}
@media (min-width: 768px) {
    .container {
        padding: 7.5rem 0 9rem;
    }
}
/* セクションタイトル */
.section-title {
    margin-bottom: 3.5rem;
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: .125em;
    text-align: center;
}
.section-title-en {
    z-index: 0;
    position: relative;
}
.section-title-en-bar {
    z-index: -1;
    position: absolute;
    top: .8rem;
    left: calc(50% - 5.5rem);
    display: inline-block;
    width: 11rem;
    height: .325rem;
    background-color: #000;
}
.section-title-jp {
display: block;
font-size: .75rem;
font-weight: 400;
}
@media (min-width: 768px) {
    .section-title {
        margin-bottom: 5.25rem;
        font-size: 2.25rem;
    }
    .section-title-en-bar {
        top: 1.3rem;
        left: calc(50% - 8.2rem);
        width: 16rem;
    }
    .section-title-jp {
    font-size: 1rem;
    }
}
/* セクションボタン */
.section-btn {
    position: relative;
    display: block;
    width: 16rem;
    height: 3rem;
    line-height: 3rem;
    margin: 0 auto;
    font-size: .75rem;
    border: .062rem solid #fff;
    text-align: center;
}
.section-btn::after {
    font-family: "bootstrap-icons";
    content: "\F285";
    position: absolute;
    right: 1rem;
    top: calc(50% - 1.45rem);
    transition: right .15s;
}
.section-btn:hover {
    border-color: #000;
    background-color: #000;
}
.section-btn:hover::after {
    right: .8rem;
}
@media (min-width: 768px) {
    .section-btn {
        width: 20rem;
        height: 3rem;
        line-height: 3.125rem;
        font-size: 1rem;
    }
}
/* フェードイン */
.fadein {
    opacity: 0;
}
/* ヘッダー
--------------------------------------------------------- */
#header {
    z-index: 20;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem 1rem 0;
    opacity: 0;
    /* background-color: rgba(255, 255, 255, .35); */
}
@media (min-width: 768px) {
    #header {
        padding: 1.5rem 1.5rem 0;
    }
}
/* ヘッダーロゴ */
.header-logo {
    font-size: 1.125rem;
    /* text-shadow: .25rem .25rem .25rem rgba(0, 0, 0, .35); */
}
.header-logo > a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 2rem;
    height: 2rem;
    font-weight: 700;
    border: .125rem solid #fff;
    transition: all .75s ease;
}
.header-logo > a:hover {
    text-shadow: .25rem .25rem .25rem rgba(0, 0, 0, .35);
    box-shadow: .25rem .25rem .75rem rgba(0, 0, 0, .35);
}
@media (min-width: 768px) {
    .header-logo {
        font-size: 1.5rem;
    }
    .header-logo > a {
        width: 3rem;
        height: 3rem;
    }
}
/* ヘッダーナビゲーション */
.header-nav-container {
    display: flex;
}
.header-nav-first > ul a, .header-nav-second > ul a {
    color: #fff;
}
@media (max-width: 767px) {
    .header-nav-first {
        z-index: -1;
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        padding: 8rem 0;
        background: linear-gradient(180deg, #000 0%, #000 10%, rgba(0, 0, 0, 0.5) 100%);
        box-shadow: 0rem 1rem 1.25rem 0.5rem rgba(0, 0, 0, 0.5);
        visibility: hidden;
    }
    .header-nav-first > ul {
        text-align: center;
        font-size: 1.2rem;
    }
    .header-nav-first > ul > li:not(:last-child) {
        margin-bottom: 2.5rem;
    }
    .header-nav-first > ul a:hover {
        color: gray;
    }
    
}
@media (min-width: 768px) {
    .header-nav-container {
        align-items: center;
        column-gap: 2.25rem;
    }
    .header-nav-first > ul {
        display: flex;
        column-gap: 2rem;
        font-size: 1.125rem;
    }
    .header-nav-first > ul a {
        position: relative;
        transition: opacity .25s ease-in-out;
    }
    .header-nav-first > ul a::before {
        content: "";
        position: absolute;
        inset: 105% auto auto 0;
        display: block;
        width: 100%;
        height: .125rem;
        background-color: #fff;
        scale: 0 1;
        transition: scale .25s ease-in-out;
    }
    .header-nav-first > ul a:hover::before {
        scale: 1;
    }
    .header-nav-first > ul a:hover {
        opacity: .65;
    }
}
.header-nav-second > ul {
    display: flex;
    column-gap: 1rem;
    font-size: 1.125rem;
}
.header-nav-second > ul a {
    transition: opacity .25s ease-in-out;
}
.header-nav-second > ul a:hover {
    opacity: .5;
}
@media (min-width: 768px) {
    .header-nav-second > ul {
        column-gap: 2rem;
        font-size: 1.75rem;
    }
}
/* ハンバーガーメニュー */
@media (max-width: 767px) {
    .hamburger-menu {
        right: -100%;
        visibility: hidden;
        transition: all .8s ease;
    }
    .hamburger-menu-open {
        right: 0;
        visibility: visible;
    }
}
/* ハンバーガーボタン */
#hamburger-btn {
    z-index: 30;
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    row-gap: .25rem;
    width: 2.25rem;
    height: 2.25rem;
    border: .062rem solid #fff;
    border-radius: 50%;
    transition: opacity .15s ease-in-out, border-color .3s ease-in-out;
}
#hamburger-btn:hover {
    opacity: .5;
}
.hamburger-btn-bar {
    display: inline-block;
    width: 1rem;
    height: .062rem;
    background-color: #fff;
    transition: background-color .3s ease-in-out;
}
#hamburger-btn.hamburger-btn-active {
    border-color: lightgray;
}
#hamburger-btn.hamburger-btn-active .hamburger-btn-bar {
    background-color: lightgray;
}
@media (min-width: 768px) {
    #hamburger-btn {
        display: none;
    }
}
/* メイン
--------------------------------------------------------- */
#main {
}
/* cover
--------------------------------------- */
#cover {
    position: relative;
    height: 100vh;
    background-color: gray;
}
.cover-title {
    position: absolute;
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    width: 100%;
    line-height: 1.2;
    color: #fff;
    opacity: 0;
}
.cover-title > span {
    display: block;
    text-align: center;
    font-size: clamp(2rem, 9vw, 4.5rem);
    letter-spacing: .2em;
}
.cover-title span:nth-child(3) {
    font-size: clamp(0.5rem, 2.5vw, 1.2rem);
    letter-spacing: .5em;
}
/* about
--------------------------------------- */
#about .container {
    max-width: 65.5rem;
    margin: 0 auto;
    padding: 5rem 0 6rem;
}
@media (min-width: 768px) {
    .container {
        padding: 7.5rem 0 9rem;
    }
}
/* works
--------------------------------------- */
.works-wrapper {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.works-item {
    display: block;
    width: 100%;
    width: calc((100% - 1rem) / 3);
}
@media (max-width: 767px) {
    .works-item {
        width: calc((100% - 1rem) / 2);
    }
}
@media (max-width: 480px) {
    .works-item {
        width: 100%;
    }
}
.works-item h3 {
    font-size: 1rem;
}
.works-item p {
    font-size: .75rem;
}
/* contact
--------------------------------------- */
.contact-text {
    margin-bottom: 2.5rem;
    line-height: 1.75;
    text-align: center;
    font-size: .75rem;
}
@media (min-width: 480px) {
    .contact-text br {
        display: none;
    }
}
@media (min-width: 768px) {
    .contact-text {
        margin-bottom: 3.75rem;
        font-size: 1rem;
    }
}
/* フッター
--------------------------------------------------------- */
#footer {
    padding: 2.75rem;
    background-color: #000;
}
.footer-copyright {
    display: block;
    text-align: center;
    font-size: .75rem;
    color: #fff;
}
@media (min-width: 768px) {
    #footer {
        padding: 3rem;
    }
    .footer-copyright {
        font-size: .875rem;
    }
}