* {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    font-family: Noto Sans JP,sans-serif;
    background: #0a0a0a;
    color: #fff;
    overflow-x: hidden
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background: #000000bf;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    z-index: 1000;
    backdrop-filter: blur(6px)
}

#topLink {
    display: flex;
    align-items: center;
    height: 100%
}

header img {
    height: 40px;
    cursor: pointer
}

nav {
    display: flex;
    align-items: center;
    gap: 20px
}

nav a {
    color: #fff;
    text-decoration: none;
    font-size: .95rem;
    letter-spacing: .03em
}

section {
    scroll-margin-top: 80px
}

.hero {
    position: relative;
    /* 高さを100vhに固定して、中身の動きでセクションが伸び縮みしないようにする */
    height: 100svh; 
    min-height: 100svh;
    background: url(images/other/back.png) center/cover no-repeat;
    display: flex;
    flex-direction: column; /* 縦並びに固定 */
    align-items: center;
    justify-content: flex-start; /* 上端合わせにしてmargin-topで制御 */
    padding: 0;
    overflow: hidden; /* はみ出しによるガタつきを防止 */
    transition: background-image 1.2s ease-in-out;
}

.hero-corner-logos {
    position: absolute;
    top: 90px;
    left: 40px;
    display: flex;
    gap: 15px;
    z-index: 10
}

.hero-corner-logos img {
    height: 80px;
    width: auto
}

.hero-content {
    width: 100%;
    max-width: 1100px;
    text-align: center;
    /* ▼ 以下を追加：親要素(hero)の中で高さいっぱいに広がるようにする */
    display: flex;
    flex-direction: column;
    flex: 1; 
}

/* ベースのスタイル */
.main-logo-container {
    display: flex;
    flex-direction: column;
    align-items: center; 
    width: 100%;
    max-width: 1200px; 
    transition: opacity 0.6s ease-in-out;
    z-index: 5;
    
    /* JSから渡された変数を読み込む（JSが動く前はデフォルト値を使用） */
    margin-top: var(--dynamic-mt, min(55vh, 550px));
}

@media(max-width: 560px) {
    /* 既存のヘッダーなどのスタイルはそのまま維持 */

    .main-logo-container {
        /* ▼ スマホでも確実な上下中央配置 */
        margin-top: auto;
        margin-bottom: auto;
    }

    .logo {
        /* ▼ スマホ用にさらに調整 */
        width: min(350px, 80vw, 40svh);
    }
    
    .release-date {
        /* ▼ スマホでは文字も少し小さめにすると、よりはみ出しにくいです */
        font-size: 1.2rem; 
    }
}

.logo {
    display: block;
    width: min(500px, 92vw);
    flex-shrink: 0;
}

.release-date {
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.1em;
    margin-top: 15px; /* ロゴとの隙間 */
    color: #fff;
    text-shadow: 0 0 10px rgba(0,0,0,0.8);
}

/* 起動時にロゴごと消えるように設定 */
.main-logo-container.is-hidden {
    opacity: 0;
}

.release {
    margin-top: 10px;
    font-size: clamp(1.25rem,2.6vw,2.5rem);
    opacity: .95
}

.store-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 48px 16px;
    background: #252333
}

.store-btn {
    width: min(220px,42vw);
    transition: transform .3s ease;
    cursor: pointer
}

.store-btn:hover {
    transform: scale(1.05)
}

.section {
    padding: 90px 10%;
    text-align: center
}

body.has-scroll-reveal .reveal-on-scroll {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity .55s ease,transform .55s ease;
    will-change: opacity,transform
}

body.has-scroll-reveal .reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0)
}

.section h2 {
    font-family: "Noto Serif JP",serif;
    margin-bottom: 30px;
    letter-spacing: .06em
}

.character-selector {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px
}

.character-selector button {
    padding: 6px 12px;
    border: 1px solid #fff;
    background: transparent;
    color: #fff;
    cursor: pointer;
    transition: .3s
}

.character-selector button.active {
    background: color-mix(in srgb,var(--c-color),#000 40%);
    border-color: var(--c-color);
    color: #fff
}

.character-selector button:hover:not(.active) {
    background: #ffffff1a
}

.character-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap
}

.character-image img,.character-text h3,.character-text p {
    transition: opacity .25s ease,transform .25s ease;
    will-change: opacity,transform
}

.character-display.is-switching-out .character-image img,.character-display.is-switching-out .character-text h3,.character-display.is-switching-out .character-text p {
    opacity: 0;
    transform: translateY(10px)
}

.character-display.is-switching-in .character-image img,.character-display.is-switching-in .character-text h3,.character-display.is-switching-in .character-text p {
    opacity: 0;
    transform: translateY(-6px)
}

.character-image img {
    width: min(400px,85vw);
    border-radius: 10px;
    cursor: pointer
}

.character-text {
    width: min(420px,92vw);
    text-align: left
}

.character-text h3 {
    font-size: clamp(1.7rem,5vw,2.2rem);
    letter-spacing: .15em;
    margin-bottom: 10px;
    position: relative
}

.character-text h3:after {
    content: "";
    display: block;
    width: 60%;
    height: 2px;
    margin-top: 8px;
    background: linear-gradient(to right,var(--char-color),transparent)
}

.character-text p {
    white-space: pre-line;
    line-height: 1.8
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
    gap: 20px
}

.gallery img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: center;
    cursor: pointer;
    transition: .3s;
    border-radius: 6px
}

.gallery img:hover {
    transform: scale(1.03);
    opacity: .85
}

.modal {
    position: fixed;
    inset: 0;
    background: #000000e6;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px
}

.modal img {
    max-width: 100%;
    max-height: 100%;
    transition: opacity .2s ease,transform .2s ease;
    will-change: opacity,transform
}

.modal.active {
    display: flex
}

.modal img.is-fading-out {
    opacity: 0;
    transform: scale(.985)
}

.modal img.is-fading-in {
    opacity: 0;
    transform: scale(1.015)
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    z-index: 2100;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 999px;
    background: #0000008c;
    color: #fff;
    font-size: 1.7rem;
    line-height: 1;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: background-color .2s ease,transform .2s ease
}

.modal-close:hover {
    background: #ffffff29;
    transform: scale(1.04)
}

.prev,.next {
    position: absolute;
    top: 50%;
    z-index: 2050;
    transform: translateY(-50%);
    font-size: clamp(2rem,6vw,3rem);
    color: #fff;
    cursor: pointer;
    user-select: none;
    padding: 20px
}

.prev {
    left: 12px
}

.next {
    right: 12px
}

footer {
    text-align: center;
    padding: 40px 20px;
    opacity: .5
}

@media(max-width: 900px) {
    header {
        padding:0 16px
    }

    nav {
        gap: 14px
    }

    nav a {
        font-size: .85rem
    }

    .hero-corner-logos {
        top: 84px;
        left: 16px
    }

    .hero-corner-logos img {
        height: 44px
    }

    .main-logo-container {
        /* ▼ 固定で押し下げるのをやめ、上下中央に自動配置する */
        margin-top: auto;
        margin-bottom: auto;
    }

    .logo {
        /* ▼ 画面の高さ（svh）も計算に入れ、縦が狭い場合は安全に縮ませる */
        width: min(450px, 85vw, 50svh); 
    }

    /*.logo {
        margin-top: min(38vh,320px)
    }*/

    .section {
        padding: 76px 6%
    }
}

@media(max-width: 560px) {
    header {
        height:62px
    }

    header img {
        height: 30px
    }

    nav {
        gap: 10px
    }

    nav a {
        font-size: .78rem
    }

    .hero {
        padding-top: 70px
    }

    .hero-corner-logos {
        top: 72px;
        gap: 10px
    }

    .hero-corner-logos img {
        height: 24px
    }

    .main-logo-container {
        /* ▼ スマホでも確実な上下中央配置 */
        margin-top: auto;
        margin-bottom: auto;
    }

    .logo {
        /* ▼ スマホ用にさらに調整 */
        width: min(350px, 80vw, 40svh);
    }
    
    .release-date {
        /* ▼ スマホでは文字も少し小さめにすると、よりはみ出しにくいです */
        font-size: 1.2rem; 
    }

    /*.logo {
        margin-top: min(34vh,230px)
    }*/

    .character-text {
        text-align: center
    }

    .character-text h3:after {
        margin-left: auto;
        margin-right: auto
    }

    .prev,.next {
        padding: 10px
    }

    .modal-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 1.45rem
    }
}

@media(prefers-reduced-motion:reduce) {
    .modal img {
        transition: none
    }

    body.has-scroll-reveal .reveal-on-scroll {
        opacity: 1;
        transform: none;
        transition: none
    }

    .character-image img,.character-text h3,.character-text p {
        transition: none
    }
}