/* リセット & ベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: "Yu Gothic", "Hiragino Sans", sans-serif;
    background: #000;
    color: #fff;
    overflow-x: hidden;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}


main {
    flex: 1;
}

/* 背景画像 */
.hero {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    z-index: -1;
    background: #000; 
}

.hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 左ナビ（全ページ共通） */
.side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 220px;
    height: 100%;
    padding-top: 50px;
    padding-left: 40px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    background: rgba(0, 0, 0, .65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-right: 1px solid rgba(255, 255, 255, .15);
    z-index: 20;
}

.side-nav a {
    position: relative;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    letter-spacing: 3px;
    padding-left: 18px;
    transition: .3s;
}

.side-nav a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: #fff;
}

.side-nav a:hover {
    color: #d6e8ff;
    transform: translateX(10px);
}

/* 各コンテンツページ共通 */
.page {
    position: relative;
    z-index: 10; 
    margin-left: 280px; 
    margin-right: 80px;
    margin-bottom: 60px;
    padding: 50px 40px 40px 40px;
    text-shadow: 0 0 4px #000, 0 0 12px #000;
}

/* TOPページのテキスト専用 */
.top-page h1 {
    font-family: "Times New Roman", "Yu Mincho", serif;
    font-weight: 400;
    font-size: clamp(2rem, 6vw, 6rem);
    line-height: 1.3;
}

/* STORYページ専用 */
.story-content {
    margin-top: 30px;
    line-height: 2;
    letter-spacing: 1px;
}

/* 登場人物画像*/
.chara-img {
    width: 100%;
    max-width: 200px;
    height: auto;
    display: block;
    margin-top: 20px;
}

/* 怪異画像レイアウト */
.anomaly-list {
    display: flex;
    justify-content: flex-start;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.anomaly-item {
    width: 280px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.anomaly-item .chara-img {
    width: 100%;
    height: auto;
    display: block;
    max-width: none;
}

.kaii-info h3 {
    font-size: 20px;
    margin-bottom: 8px;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 5px;
}

.kaii-info p {
    font-size: 14px;
    line-height: 1.6;
    color: #ccc;
}

/* =====================================
   フッター
===================================== */
.site-footer {
    position: relative;
    z-index: 10;
    margin-left: 220px;
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding: 20px 0;
    text-align: center;
}

.site-footer p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

/* =====================================
   レスポンシブ（画面縮小時）
===================================== */
@media (max-width: 768px) {
    .side-nav {
        width: 170px;
        padding: 15px 0;
    }

    .side-nav a {
        font-size: 16px;
    }

    .page {
        margin-left: 200px; 
        margin-right: 20px;
        margin-top: 40px;
        padding: 20px;
    }

    .top-page h1 {
        font-size: 2.4rem;
    }

    .site-footer {
        margin-left: 200px;
        margin-right: 20px;
        padding-bottom: 20px;
    }
}