/* ===========================
   基本設定
=========================== */

body{

    margin:0;
    background:#000;
    color:#fff;
    font-family:"Yu Mincho",serif;

}

html{

    scroll-behavior:smooth;

}

/* ===========================
   背景
=========================== */

.background{

    position:fixed;

    top:0;
    left:0;

    width:100%;
    height:100svh;

    background:url("images/background.jpg") center center / cover no-repeat;

    filter:brightness(.33);

    z-index:-1;

}

/* ===========================
   全体
=========================== */

.container{

    position:relative;

    width:92%;
    max-width:1500px;

    margin:auto;

    padding:70px 0 100px;

}

/* ===========================
   左上TOPボタン
   （ABOUTと共通）
=========================== */

.top-button{

    position:absolute;

    top:40px;
    left:40px;

    padding:10px 24px;

    border:1px solid rgba(255,255,255,.25);
    border-radius:30px;

    color:#fff;
    text-decoration:none;

    transition:.35s;

}

.top-button:hover{

    color:#ffd8ea;
    border-color:#ffd8ea;

    box-shadow:0 0 18px rgba(255,180,220,.25);

}

/* ===========================
   タイトル
=========================== */

h1{

    margin:0;

    text-align:center;

    font-size:60px;

    font-weight:normal;

    letter-spacing:.35em;

}

.subtitle{

    text-align:center;

    margin:-15px 0 25px;

    font-size:18px;

    color:rgba(255,255,255,.65);

    letter-spacing:.2em;

}

/* ===========================
   タイトル飾り
=========================== */

.title-decoration{

    display:flex;

    justify-content:center;

    align-items:center;

    gap:20px;

    margin-bottom:60px;

}

.title-decoration::before,
.title-decoration::after{

    content:"";

    width:400px;

    height:1px;

    background:rgba(255,255,255,.25);

}

.title-decoration span{

    color:white;

    font-size:22px;

}

/* ===========================
   レイアウト
=========================== */

.layout{

    display:grid;

    grid-template-columns:170px 1fr;

    gap:90px;

    align-items:start;

}

/* ===========================
   左メニュー
=========================== */

.side-menu{

    position:sticky;

    top:70px;

    display:flex;

    flex-direction:column;

    height:calc(100vh - 70px);

}

.side-menu a{

    display:block;

    color:rgba(255,255,255,.72);

    text-decoration:none;

    letter-spacing:.18em;

    font-size:18px;

    margin-bottom:26px;

    text-align:center;

    transition:.35s;

}

.side-menu a::after{

    content:"";

    display:block;

    width:70px;

    height:1px;

    margin:12px auto 0;

    background:linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,.25),
        transparent
    );

    transition:.35s;

}

.side-menu a:hover{

    color:#ffd8ea;

    transform:translateX(6px);

}

.side-menu a:hover::after{

    width:100px;

    background:linear-gradient(
        90deg,
        transparent,
        #ffd8ea,
        transparent
    );

}

/* ===========================
   右側
=========================== */

.content{

    max-width:1000px;

}

section{

    position:relative;

    padding-bottom:20px;

    margin-bottom:90px;

}

section:not(:last-of-type)::after{

    content:"";

    display:block;

    width:70%;

    height:1px;

    margin:35px auto 0;

    background:linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,.25),
        transparent
    );

}

section h2{

    text-align:center;

    font-size:38px;

    font-weight:normal;

    letter-spacing:.18em;

    margin-bottom:20px;

}

.section-text{

    text-align:center;

    color:rgba(255,255,255,.78);

    line-height:2.3;

    font-size:17px;

    margin-bottom:40px;

}
/* ===========================
   オープニング
=========================== */

.hero{

    margin-bottom:50px;

}

/* ===========================
   動画2列
=========================== */

.movie-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:30px;

}

/* ===========================
   ガラスカード
=========================== */

.movie-card,
.info-card{

    background:rgba(255,255,255,.08);

    border:1px solid rgba(255,255,255,.15);

    backdrop-filter:blur(10px);

    border-radius:18px;

    padding:30px;

    text-align:center;

    box-shadow:0 0 25px rgba(255,255,255,.08);

    transition:.35s;

}

.movie-card:hover,
.info-card:hover{

    transform:translateY(-5px);

    border-color:#ffd8ea;

    box-shadow:0 0 30px rgba(255,210,230,.25);

}

.movie-card h3,
.info-card h3{

    margin:0 0 18px;

    font-size:28px;

    font-weight:normal;

    letter-spacing:.08em;

    line-height:1.6;

}

/* ===========================
   YouTube
=========================== */

.movie-card iframe{

    width:100%;

    aspect-ratio:16 / 9;

    border:none;

    border-radius:12px;

}

/* ===========================
   Shorts
=========================== */

.short-title{

    margin:65px 0 30px;

    text-align:center;

    font-size:28px;

    font-weight:normal;

    letter-spacing:.15em;

}

/* ===========================
   MUSIC
=========================== */

.info-card{

    margin-bottom:35px;

}

.info-card p{

    margin:0;

    line-height:2.2;

    color:rgba(255,255,255,.80);

}

/* ===========================
   スタンプ
=========================== */

.stamp{

    display:block;

    width:100%;

    max-width:480px;

    margin:25px auto;

    border-radius:14px;

    border:1px solid rgba(255,255,255,.15);

    transition:.35s;

}

.stamp:hover{

    transform:scale(1.02);

    box-shadow:0 0 30px rgba(255,210,230,.25);

}

/* ===========================
   ボタン
=========================== */

.link-button,
.back{

    display:table;

    margin:70px auto 0;

    padding:12px 34px;

    border:1px solid rgba(255,255,255,.25);

    border-radius:30px;

    color:#fff;

    text-decoration:none;

    transition:.35s;

}

.back:hover{

    color:#ffd8ea;

    border-color:#ffd8ea;

    box-shadow:0 0 20px rgba(255,180,220,.3);

}

.back{

    margin:55px auto 0;

}

.menu-top{

    margin-top:auto !important;

}
/* ===========================
   ギャラリー
=========================== */

/* イベントCG */

.event-gallery{

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:24px;

    margin-top:35px;

}

.event-gallery img{

    width:100%;

    aspect-ratio:16 / 9;

    object-fit:cover;

    border-radius:14px;

    border:1px solid rgba(255,255,255,.12);

    cursor:pointer;

    transition:.35s;

    box-shadow:0 0 20px rgba(0,0,0,.25);

}

.event-gallery img:hover{

    transform:scale(1.03);

    box-shadow:0 0 30px rgba(255,210,230,.25);

}

/* 背景・メインビジュアル */

.gallery-card{

    display:flex;

    justify-content:center;

    margin-top:35px;

}

.gallery-card img{

    width:100%;

    max-width:650px;

    border-radius:14px;

    border:1px solid rgba(255,255,255,.12);

    cursor:pointer;

    transition:.35s;

    box-shadow:0 0 20px rgba(0,0,0,.25);

}

.gallery-card img:hover{

    transform:scale(1.02);

    box-shadow:0 0 30px rgba(255,210,230,.25);

}

/* Coming Soon */

.coming-card{

    aspect-ratio:16 / 9;

    display:flex;

    justify-content:center;

    align-items:center;

    font-size:22px;

    letter-spacing:.15em;

    color:rgba(255,255,255,.7);

    border:1px dashed rgba(255,255,255,.25);

    border-radius:14px;

    background:rgba(255,255,255,.04);

    backdrop-filter:blur(6px);

}

/* ===========================
   画像拡大
=========================== */

#image-viewer{

    display:none;

    position:fixed;

    inset:0;

    justify-content:center;

    align-items:center;

    background:rgba(0,0,0,.88);

    cursor:pointer;

    z-index:9999;

    opacity:0;

    transition:opacity .35s ease;

}

#viewer-image{

    max-width:90vw;

    max-height:90vh;

    object-fit:contain;

    border-radius:12px;

    box-shadow:0 0 40px rgba(255,220,235,.35);

    transform:scale(.95);

    opacity:0;

    transition:
        transform .35s ease,
        opacity .35s ease;

}

/* 閉じる */

#close-button{

    position:fixed;

    top:40px;
    right:40px;

    width:56px;
    height:56px;

    display:flex;
    justify-content:center;
    align-items:center;

    font-size:42px;
    line-height:1;

    color:#fff;

    cursor:pointer;
    user-select:none;

    border:1px solid rgba(255,255,255,.25);
    border-radius:50%;

    background:rgba(0,0,0,.35);
    backdrop-filter:blur(8px);

    transition:.3s;

    z-index:10001;

}

#close-button:hover{

    color:#ffd8ea;

    border-color:#ffd8ea;

    background:rgba(255,210,230,.12);

    transform:scale(1.08);

    box-shadow:0 0 18px rgba(255,180,220,.3);

}
/* ===========================
   スマホ最適化（ABOUT準拠）
=========================== */

@media(max-width:900px){

    .container{

        width:92%;
        padding:45px 0 70px;

    }

    /* 上部TOPボタンは非表示 */

    .top-button{

        display:none;

    }

    /* レイアウト */

    .layout{

        display:block;

    }

    /* 左メニュー非表示 */

    .side-menu{

        display:none;

    }

    .content{

        max-width:100%;

    }

    /* タイトル */

    h1{

        font-size:34px;
        letter-spacing:.18em;

    }

    .subtitle{

        margin:-8px 0 20px;
        font-size:13px;
        letter-spacing:.12em;

    }

    .title-decoration{

        margin-bottom:35px;

    }

    .title-decoration::before,
    .title-decoration::after{

        width:120px;

    }

    /* セクション */

    section{

        margin-bottom:70px;

    }

    section h2{

        font-size:28px;
        margin-bottom:22px;

    }

    .section-text{

        font-size:14px;
        line-height:2.15;

        text-align:justify;
        text-justify:inter-ideograph;

        letter-spacing:.02em;

        margin-bottom:28px;

    }

    /* 動画 */

    .movie-grid{

        grid-template-columns:1fr;

        gap:18px;

    }

    .movie-card,
    .info-card{

        padding:18px;

    }

    .movie-card h3,
    .info-card h3{

        font-size:18px;

        margin-bottom:12px;

    }

    .short-title{

        font-size:22px;

        margin:45px 0 22px;

    }

    iframe{

        width:100%;

    }

/* イベントCG */

.event-gallery{

    grid-template-columns:repeat(2,1fr);

    gap:14px;

}

/* Coming SoonもCGと同じサイズ */

.coming-card{

    width:100%;

    aspect-ratio:16 / 9;

    display:flex;

    justify-content:center;

    align-items:center;

    font-size:16px;

    box-sizing:border-box;

}

    /* スタンプ */

    .stamp{

        max-width:260px;

    }

    /* 閉じるボタン */

    #close-button{

        top:85px;
        right:10px;
        font-size:36px;

    }

    /* 下部TOP */

    .back{

        margin-top:45px;

        padding:12px 34px;

        border:1px solid rgba(255,255,255,.25);

        border-radius:30px;

    }

}
/* ===========================
   左上TOPボタン
=========================== */

.container{
    position:relative;
}

.top-button{

    position:fixed;

    top:40px;
    left:40px;

    padding:10px 24px;

    border:1px solid rgba(255,255,255,.25);
    border-radius:30px;

    color:#fff;
    text-decoration:none;

    transition:.35s;

    z-index:100;

}

.top-button:hover{

    color:#ffd8ea;
    border-color:#ffd8ea;

    box-shadow:0 0 18px rgba(255,180,220,.25);

}