/* =========================================
   【編集ポイント】 サイト全体のカラー設定
   ここを変更するだけでサイト全体の配色が変わります
   ========================================= */
:root {
    --bg-color: #ffffff;       /* 背景色（ピュアホワイト） */
    --text-main: #2c3e50;      /* メインの文字色（ブルーグレー） */
    --text-sub: #576574;       /* サブの文字色（薄いブルーグレー） */
    --accent-color: #c8d6e5;   /* 境界線などの枠線カラー */
    --gold-accent: #0984e3;    /* アクセントカラー（リンクや強調箇所） */
}

/* =========================================
   基本設定 (全デバイス共通 - 編集不要)
   ========================================= */
html {
    scroll-behavior: smooth;
    height: auto;
    min-height: 100%;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 2.2;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    height: auto;
    min-height: 100vh;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.4s ease;
}

/* セクションのタイトル装飾 */
.section-header {
    margin-bottom: 4rem;
    text-align: left;
}
.section-title-en {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    color: var(--gold-accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}
.section-title-ja {
    font-size: 2rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin: 0;
    color: var(--text-main);
}

/* アニメーション用の初期非表示設定 */
.js-enabled .sidebar,
.js-enabled .main-content,
.js-enabled .nav-item,
.js-enabled .course-item,
.js-enabled .room-item,
.js-enabled .sake-item,
.js-enabled .manager-profile {
    opacity: 0;
}

/* 画像拡大モーダル用のスタイル */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}
.modal-content {
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
}
.modal-image-wrapper {
    flex: 1;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}
.modal-img {
    max-width: 100%;
    max-height: 60vh;
    object-fit: contain;
}
.modal-details {
    text-align: center;
    color: var(--text-main);
}
.close-btn {
    position: absolute;
    top: -2rem;
    right: 0;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 2rem;
    cursor: pointer;
    z-index: 2001;
}

/* =========================================
   【PC用レイアウト】 画面幅: 1025px 以上
   以下はPC表示専用のスタイルです
   ========================================= */
@media (min-width: 1025px) {
    .sp-only {
        display: none !important;
    }

    .layout-wrapper {
        display: flex;
        min-height: 100vh;
    }

    /* 左側固定サイドバー */
    .sidebar {
        width: 280px;
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        padding: 2rem 1.5rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        border-right: 1px solid var(--accent-color);
        z-index: 50;
        background-color: var(--bg-color);
        overflow-y: auto;
        scrollbar-width: none;
    }
    .sidebar::-webkit-scrollbar {
        display: none;
    }

    .main-content {
        margin-left: 280px;
        width: calc(100% - 280px);
        padding: 0;
    }

    .sidebar-header {
        margin-bottom: 1.5rem;
        text-align: center;
        width: 100%;
        flex-shrink: 0;
    }
    .site-logo {
        width: 100%;
        max-width: 150px;
        height: auto;
        display: block;
        margin: 0 auto 1rem;
    }
    .site-title {
        font-size: 2rem;
        margin: 0 0 1rem;
        line-height: 1.2;
    }
    .sidebar-nav {
        margin: 0;
        width: 100%;
        display: flex;
        align-items: flex-start;
        justify-content: center;
        flex-shrink: 1;
        min-height: 0;
    }
    .nav-list {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
        align-items: center;
        width: 100%;
    }
    .nav-item {
        width: 90%;
    }
    .js-enabled .nav-item {
        transform: translateY(20px);
    }
    .nav-item a {
        display: block;
        width: 100%;
        text-align: center;
        padding: 0.8rem 0;
        font-size: 0.95rem;
        letter-spacing: 0.15em;
        color: var(--text-sub);
        border: 1px solid var(--accent-color);
        position: relative;
        transition: all 0.4s ease;
        background-color: transparent;
    }
    .nav-item a:hover,
    .nav-item a.active {
        color: var(--gold-accent);
        border-color: var(--gold-accent);
        background-color: rgba(9, 132, 227, 0.08); 
    }
    .sidebar-footer {
        margin-top: auto;
        text-align: center;
        padding-top: 1.5rem;
        padding-bottom: 1rem;
        width: 100%;
        flex-shrink: 0;
    }

    /* 各セクション共通余白 */
    section {
        padding: 6rem 4rem;
        border-bottom: 1px solid var(--accent-color);
        min-height: 80vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    /* メインビジュアル (Hero Slider) */
    #hero-slider-section {
        padding: 0;
        border-bottom: 1px solid var(--accent-color);
        min-height: 100vh;
        position: relative;
        overflow: hidden;
        background-color: var(--bg-color);
    }
    .slider-container {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
    .slide-item {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        transition: opacity 2.5s ease-in-out;
        z-index: 1;
        background-color: var(--bg-color);
    }
    .slide-item.active {
        opacity: 1;
        z-index: 2;
    }
    .slide-item picture,
    .slide-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }
    .slide-item img {
        transform: scale(1.05);
        transition: transform 10s ease;
        filter: brightness(0.6); /* 画像を少し暗くして文字を読みやすく */
    }
    .slide-item.active img {
        transform: scale(1.1);
    }
    .hero-text-overlay {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 10;
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        pointer-events: none;
    }
    .hero-text {
        color: #fff;
        font-family: 'Noto Sans JP', sans-serif;
        font-size: 3rem;
        font-weight: 500;
        letter-spacing: 0.3em;
        text-shadow: 0 4px 20px rgba(0,0,0,0.8);
        white-space: nowrap;
        opacity: 0;
        transform: translateY(10px) scale(0.98);
        transition: opacity 2.5s ease-out, transform 2.5s ease-out;
        transition-delay: 0.5s;
    }
    .slide-item.active .hero-text {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    /* スクロールを促す縦線アニメーション */
    .scroll-indicator {
        position: absolute;
        bottom: 2rem;
        right: 4rem;
        z-index: 10;
        color: #fff;
        font-family: 'Inter', sans-serif;
        font-size: 0.8rem;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        writing-mode: vertical-rl;
        text-orientation: mixed;
        opacity: 0.7;
        display: flex;
        align-items: center;
        gap: 1rem;
    }
    .scroll-indicator::after {
        content: '';
        display: block;
        width: 1px;
        height: 60px;
        background-color: #fff;
        animation: scrollDown 2s infinite;
    }
    @keyframes scrollDown {
        0% { transform: scaleY(0); transform-origin: top; }
        50% { transform: scaleY(1); transform-origin: top; }
        51% { transform: scaleY(1); transform-origin: bottom; }
        100% { transform: scaleY(0); transform-origin: bottom; }
    }

    /* Concept セクション */
    #concept {
        position: relative;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }
    #concept .section-header {
        margin-bottom: 2rem;
        margin-left: 0;
        text-align: center;
        height: auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    #concept .section-title-en {
        margin-bottom: 0.5rem;
        margin-left: 0;
    }
    #concept .section-title-ja {
        font-size: 2.2rem;
        letter-spacing: 0.2em;
        line-height: 1.8;
        color: var(--text-main);
    }
    #concept .concept-text {
        font-family: 'Noto Sans JP', sans-serif;
        font-size: 1.15rem;
        line-height: 2.6;
        letter-spacing: 0.15em;
        color: var(--text-main);
        height: auto;
        width: 100%;
        max-width: 800px;
        margin: 0;
    }
    #concept .concept-text p {
        margin: 0 0 1.5rem 0;
        text-align: center;
    }

    /* Menu / Service セクション */
    .course-list {
        display: grid;
        grid-template-columns: 1fr;
        gap: 6rem;
        max-width: 960px;
    }
    .course-item { cursor: default; }
    .course-image-container {
        width: 100%;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background-color: #f0f8ff; 
        position: relative;
        margin-bottom: 2rem;
    }
    .course-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.8s ease;
        filter: brightness(0.95);
    }
    .course-item:hover .course-img {
        transform: scale(1.05);
        filter: brightness(1.0);
    }
    .course-info { text-align: left; }
    .course-title {
        font-size: 1.8rem;
        font-weight: 500;
        margin-bottom: 0.5rem;
        letter-spacing: 0.1em;
        display: block;
    }
    .course-price {
        font-family: 'Inter', sans-serif;
        font-size: 1.1rem;
        color: var(--gold-accent);
        display: block;
        margin-bottom: 1.5rem;
        letter-spacing: 0.05em;
    }
    .course-desc {
        font-size: 1rem;
        color: var(--text-sub);
        line-height: 2;
        text-align: justify;
    }

    /* Gallery セクション */
    .room-list {
        display: flex;
        flex-direction: column;
        gap: 6rem;
    }
    .room-item {
        display: flex;
        align-items: center;
        gap: 4rem;
    }
    .room-item:nth-child(even) {
        flex-direction: row-reverse; /* 交互に画像を配置 */
    }
    .room-image-wrapper {
        flex: 1;
        aspect-ratio: 4 / 3;
        overflow: hidden;
        background-color: #f0f8ff;
        position: relative;
        cursor: pointer;
    }
    .room-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.8s ease, filter 0.5s ease;
        filter: brightness(0.95);
    }
    .room-image-wrapper:hover .room-img {
        transform: scale(1.05);
        filter: brightness(1.05);
    }
    /* 画像ホバー時の＋アイコン */
    .room-image-wrapper::after {
        content: '+';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0);
        color: #fff;
        font-size: 2rem;
        font-weight: 300;
        background-color: rgba(0,0,0,0.3);
        width: 60px;
        height: 60px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        border: 1px solid rgba(255,255,255,0.5);
        transition: transform 0.3s ease;
        pointer-events: none;
    }
    .room-image-wrapper:hover::after {
        transform: translate(-50%, -50%) scale(1);
    }
    .room-info {
        flex: 1;
        text-align: left;
    }
    .room-title {
        font-size: 1.6rem;
        font-weight: 500;
        margin-bottom: 1rem;
        letter-spacing: 0.1em;
        display: block;
        border-bottom: 1px solid var(--accent-color);
        padding-bottom: 0.5rem;
        display: inline-block;
        min-width: 150px;
    }
    .room-capacity {
        font-size: 0.95rem;
        color: var(--gold-accent);
        display: block;
        margin-bottom: 1rem;
        font-family: 'Inter', sans-serif;
        letter-spacing: 0.05em;
    }
    .room-desc {
        font-size: 0.95rem;
        color: var(--text-sub);
        line-height: 2;
        text-align: justify;
    }

    /* Products / Items セクション */
    .sake-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr); /* 2列表示 */
        gap: 4rem;
    }
    .sake-item { cursor: default; }
    .sake-image-wrapper {
        width: 100%;
        aspect-ratio: 1 / 1; /* 正方形 */
        overflow: hidden;
        background-color: #f0f8ff;
        margin-bottom: 1.5rem;
        position: relative;
    }
    .sake-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.8s ease;
    }
    .sake-item:hover .sake-img {
        transform: scale(1.05);
        filter: brightness(1.05);
    }
    .sake-info { text-align: center; }
    .sake-title {
        font-size: 1.2rem;
        font-weight: 500;
        margin-bottom: 0.5rem;
        display: block;
        letter-spacing: 0.1em;
    }
    .sake-meta {
        font-size: 0.85rem;
        color: var(--text-sub);
        letter-spacing: 0.05em;
    }

    /* Profile / Manager セクション */
    .manager-profile {
        display: flex;
        align-items: center;
        gap: 4rem;
    }
    .manager-image-wrapper {
        flex: 1;
        width: 100%;
        height: auto;
        overflow: hidden;
        background-color: #f0f8ff;
        position: relative;
    }
    .manager-img {
        width: 100%;
        height: auto;
        display: block;
        transition: transform 0.8s ease, filter 0.5s ease;
        filter: brightness(0.95);
    }
    .manager-info {
        flex: 1;
        text-align: left;
    }
    .manager-name {
        font-size: 1.6rem;
        font-weight: 500;
        margin-bottom: 1rem;
        letter-spacing: 0.1em;
        display: block;
        border-bottom: 1px solid var(--accent-color);
        padding-bottom: 0.5rem;
        display: inline-block;
        min-width: 150px;
    }
    .manager-desc {
        font-size: 0.95rem;
        color: var(--text-sub);
        line-height: 2;
        text-align: justify;
        writing-mode: horizontal-tb;
    }

    /* Information セクション */
    .info-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: start;
    }
    .info-dl {
        display: grid;
        grid-template-columns: auto 1fr;
        gap: 1.5rem 2rem;
    }
    .info-dt {
        color: var(--text-sub);
        font-size: 1.05rem;
        font-weight: 500;
    }
    .info-dd {
        margin: 0;
        font-size: 1.15rem;
        line-height: 1.8;
    }
}


/* =========================================
   【タブレット用レイアウト】 画面幅: 769px 〜 1024px
   以下はタブレット表示専用のスタイルです
   ========================================= */
@media (min-width: 769px) and (max-width: 1024px) {
    .pc-only {
        display: none !important;
    }
    .sidebar {
        display: none;
    }
    .layout-wrapper {
        display: block;
    }
    .main-content {
        width: 100%;
        margin: 0;
        padding-bottom: 0;
    }

    section {
        padding: 4rem 2rem;
        min-height: auto;
        border-bottom: 1px solid var(--accent-color);
    }

    #hero-slider-section {
        padding: 0;
        border-bottom: 1px solid var(--accent-color);
        min-height: 50vh;
        height: 50vh;
        position: relative;
        overflow: hidden;
        background-color: var(--bg-color);
    }
    .slider-container {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
    .slide-item {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        transition: opacity 2.5s ease-in-out;
    }
    .slide-item.active { opacity: 1; z-index: 2; }
    .slide-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transform: scale(1.05);
        transition: transform 10s ease;
        filter: brightness(0.6);
    }
    .slide-item.active img { transform: scale(1.1); }
    .hero-text-overlay {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 10;
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .hero-text {
        color: #fff;
        font-family: 'Noto Sans JP', sans-serif;
        font-size: 2.4rem; 
        font-weight: 500;
        letter-spacing: 0.3em;
        text-shadow: 0 4px 20px rgba(0,0,0,0.8);
        white-space: nowrap;
        opacity: 0;
        transform: translateY(10px) scale(0.98);
        transition: opacity 2.5s ease-out, transform 2.5s ease-out;
        transition-delay: 0.5s;
    }
    .slide-item.active .hero-text { opacity: 1; transform: translateY(0) scale(1); }
    .scroll-indicator {
        position: absolute;
        bottom: 2rem;
        right: 2rem; 
        z-index: 10;
        color: #fff;
        font-size: 0.8rem;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        writing-mode: vertical-rl;
        display: flex;
        align-items: center;
        gap: 1rem;
    }
    .scroll-indicator::after {
        content: '';
        width: 1px;
        height: 60px;
        background-color: #fff;
        animation: scrollDown 2s infinite;
    }

    #concept {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 4rem 2rem;
    }
    #concept .section-header {
        margin: 0 0 3rem 0;
        text-align: center;
        height: auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: 100%;
    }
    #concept .section-title-en {
        margin-left: 0;
        margin-bottom: 0.2rem;
        font-size: 1rem;
    }
    #concept .section-title-ja {
        font-size: 3rem;
        line-height: 1.3;
        margin: 0;
        color: var(--text-main); 
    }
    #concept .concept-text {
        height: auto;
        max-height: none;
        width: 100%;
        max-width: none;
        margin: 0 auto;
        font-size: 1.5rem;
        text-align: center;
        color: var(--text-main);
    }
    #concept .concept-text p {
        margin: 0 0 0.5rem 0;
        text-align: center;
    }

    .course-list {
        display: grid;
        grid-template-columns: 1fr;
        gap: 6rem;
    }
    .course-image-container {
        width: 100%;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background-color: #f0f8ff;
        margin-bottom: 2rem;
    }
    .course-img { width: 100%; height: 100%; object-fit: cover; }
    .course-title { 
        font-size: 2.2rem; 
        font-weight: 500; 
        display: block; 
        margin-bottom: 0.5rem; 
    }
    .course-price { 
        font-size: 1.4rem; 
        color: var(--gold-accent); 
        display: block; 
        margin-bottom: 1.5rem; 
    }
    .course-desc { 
        font-size: 1.2rem; 
        color: var(--text-sub); 
        line-height: 2; 
    }

    .room-list {
        display: flex;
        flex-direction: column;
        gap: 6rem;
    }
    .room-item {
        display: flex;
        align-items: center;
        gap: 2rem; 
    }
    .room-item:nth-child(even) { flex-direction: row-reverse; }
    .room-image-wrapper {
        flex: 1;
        aspect-ratio: 4 / 3;
        position: relative;
        overflow: hidden;
        background-color: #f0f8ff;
    }
    .room-img { width: 100%; height: 100%; object-fit: cover; }
    .room-info { flex: 1; text-align: left; }
    .room-title { 
        font-size: 2rem; 
        border-bottom: 1px solid var(--accent-color); 
        padding-bottom: 0.5rem; 
        display: inline-block; 
        margin-bottom: 1rem; 
    }
    .room-capacity { 
        font-size: 1.2rem; 
        color: var(--gold-accent); 
        margin-bottom: 1rem; 
        display: block; 
    }
    .room-desc { 
        font-size: 1.2rem; 
        color: var(--text-sub); 
        line-height: 2; 
    }
    @media (max-width: 900px) {
        .room-item, .room-item:nth-child(even) {
            flex-direction: column !important;
            gap: 1.5rem;
        }
        .room-image-wrapper { width: 100%; aspect-ratio: 3/2; }
        .room-info { width: 100%; }
    }

    .sake-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 4rem;
    }
    .sake-image-wrapper { width: 100%; aspect-ratio: 1/1; margin-bottom: 1.5rem; background-color: #f0f8ff; }
    .sake-img { width: 100%; height: 100%; object-fit: cover; }
    .sake-info { text-align: center; }
    .sake-title { 
        font-size: 1.6rem; 
        margin-bottom: 0.5rem; 
        display: block; 
    }
    .sake-meta {
        font-size: 1.1rem; 
        color: var(--text-sub);
        letter-spacing: 0.05em;
    }

    #manager { padding: 3rem 2rem; }
    .manager-profile {
        display: flex;
        flex-direction: column !important;
        gap: 1.5rem;
    }
    .manager-image-wrapper { width: 100%; height: auto; background-color: #f0f8ff; }
    .manager-img { width: 100%; height: auto; }
    .manager-info { width: 100%; text-align: left; }
    .manager-name { 
        font-size: 1.8rem; 
        border-bottom: 1px solid var(--accent-color); 
        padding-bottom: 0.5rem; 
        display: inline-block; 
        margin-bottom: 1rem; 
    }
    .manager-desc { 
        font-size: 1.2rem; 
        color: var(--text-sub); 
        line-height: 2; 
    }

    #info { padding: 1.5rem 2rem; }
    .info-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: start;
    }
    .info-dl { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem 2rem; }
    .info-dt { 
        font-weight: 500; 
        color: var(--text-sub); 
        font-size: 1.2rem; 
    }
    .info-dd { 
        font-size: 1.3rem; 
    }

    #sp-menu {
        padding: 3rem 1.5rem 4rem !important;
        text-align: center;
    }
    .sp-nav-wrapper { width: 100%; }
    .nav-list { display: flex; flex-direction: column; gap: 0.8rem; align-items: center; }
    .nav-item { width: 100%; max-width: 300px; opacity: 1; }
    .nav-item a {
        display: block; width: 100%; text-align: center; padding: 0.8rem 0;
        border: 1px solid var(--accent-color); color: var(--text-sub);
    }
}


/* =========================================
   【スマートフォン用レイアウト】 画面幅: 768px 以下
   以下はスマホ表示専用のスタイルです
   ========================================= */
@media (max-width: 768px) {
    .pc-only {
        display: none !important;
    }
    .sidebar {
        display: none;
    }
    .layout-wrapper {
        display: block;
    }
    .main-content {
        width: 100%;
        margin: 0;
        padding-bottom: 0;
    }

    section {
        padding: 4rem 1.5rem;
        min-height: auto;
        border-bottom: 1px solid var(--accent-color);
    }

    #hero-slider-section {
        padding: 0;
        border-bottom: 1px solid var(--accent-color);
        min-height: auto;
        height: auto;
        width: 100%;
        aspect-ratio: 1 / 1;
        position: relative;
        overflow: hidden;
        background-color: var(--bg-color);
    }
    .slider-container {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
    .slide-item {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        transition: opacity 2.5s ease-in-out;
    }
    .slide-item.active { opacity: 1; z-index: 2; }
    .slide-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transform: scale(1.05);
        transition: transform 10s ease;
        filter: brightness(0.6);
    }
    .slide-item.active img { transform: scale(1.1); }
    .hero-text-overlay {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 10;
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .hero-text {
        color: #fff;
        font-family: 'Noto Sans JP', sans-serif;
        font-size: 1.3rem; 
        letter-spacing: 0.1em;
        text-shadow: 0 4px 20px rgba(0,0,0,0.8);
        white-space: normal;
        text-align: center;
        width: 90%;
        opacity: 0;
        transform: translateY(10px) scale(0.98);
        transition: opacity 2.5s ease-out, transform 2.5s ease-out;
        transition-delay: 0.5s;
    }
    .slide-item.active .hero-text { opacity: 1; transform: translateY(0) scale(1); }
    .scroll-indicator {
        position: absolute;
        bottom: 2rem;
        right: 1.5rem;
        z-index: 10;
        color: #fff;
        font-size: 0.8rem;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        writing-mode: vertical-rl;
        display: flex;
        align-items: center;
        gap: 1rem;
    }
    .scroll-indicator::after {
        content: '';
        width: 1px;
        height: 60px;
        background-color: #fff;
        animation: scrollDown 2s infinite;
    }

    #concept {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 4rem 1.5rem;
    }
    #concept .section-header {
        margin: 0 0 1.5rem 0;
        text-align: center;
        height: auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: 100%;
    }
    #concept .section-title-en {
        margin-left: 0;
        margin-bottom: 0.2rem;
        font-size: 1rem;
    }
    #concept .section-title-ja {
        font-size: 1.5rem;
        line-height: 1.3;
        margin: 0;
        color: var(--text-main);
    }
    #concept .concept-text {
        height: auto;
        width: 100%;
        margin: 0 auto;
        font-size: 1rem;
        text-align: center;
        color: var(--text-main);
    }
    #concept .concept-text p {
        margin: 0 0 1rem 0;
        text-align: center;
    }

    .course-list {
        display: grid;
        grid-template-columns: 1fr;
        gap: 4rem; 
    }
    .course-image-container {
        width: 100%;
        aspect-ratio: 16 / 9;
        margin-bottom: 2rem;
        background-color: #f0f8ff;
    }
    .course-img { width: 100%; height: 100%; object-fit: cover; }
    .course-title { font-size: 1.5rem; font-weight: 500; display: block; margin-bottom: 0.5rem; }
    .course-price { font-size: 1.1rem; color: var(--gold-accent); display: block; margin-bottom: 1.5rem; }
    .course-desc { font-size: 1rem; color: var(--text-sub); line-height: 2; }

    .room-list {
        display: flex;
        flex-direction: column;
        gap: 4rem;
    }
    .room-item,
    .room-item:nth-child(even) {
        flex-direction: column !important;
        gap: 1.5rem;
    }
    .room-image-wrapper {
        width: 100%;
        aspect-ratio: 3 / 2;
        position: relative;
        background-color: #f0f8ff;
    }
    .room-img { width: 100%; height: 100%; object-fit: cover; }
    .room-info { width: 100%; text-align: left; }
    .room-title { font-size: 1.4rem; border-bottom: 1px solid var(--accent-color); padding-bottom: 0.5rem; display: block; margin-bottom: 1rem; }
    .room-capacity { color: var(--gold-accent); margin-bottom: 1rem; display: block; }
    .room-desc { font-size: 0.95rem; color: var(--text-sub); line-height: 2; }

    /* 横スクロール対応 (アイテム一覧) */
    .sake-list {
        display: flex;
        gap: 1.5rem;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding: 0 10% 2rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .sake-list::-webkit-scrollbar { display: none; }
    .sake-item {
        flex: 0 0 80%;
        scroll-snap-align: center;
    }
    .sake-image-wrapper { width: 100%; aspect-ratio: 1/1; margin-bottom: 1.5rem; background-color: #f0f8ff; }
    .sake-img { width: 100%; height: 100%; object-fit: cover; }
    .sake-info { text-align: center; }
    .sake-title { font-size: 1.2rem; margin-bottom: 0.5rem; display: block; }

    #manager { padding: 3rem 1.5rem; }
    .manager-profile {
        display: flex;
        flex-direction: column !important;
        gap: 1.5rem;
    }
    .manager-image-wrapper { width: 100%; height: auto; background-color: #f0f8ff; }
    .manager-img { width: 100%; height: auto; }
    .manager-info { width: 100%; text-align: left; }
    .manager-name { font-size: 1.4rem; border-bottom: 1px solid var(--accent-color); padding-bottom: 0.5rem; display: block; margin-bottom: 1rem; }
    .manager-desc { font-size: 0.95rem; color: var(--text-sub); line-height: 2; }

    #info { padding: 1.5rem 1.5rem; }
    .info-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2rem;
        align-items: start;
    }
    .info-dl { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem 2rem; }
    .info-dt { font-weight: 500; color: var(--text-sub); }
    .info-dd { font-size: 1.15rem; }

    #sp-menu {
        padding: 3rem 1.5rem 4rem !important;
        text-align: center;
    }
    .sp-nav-wrapper { width: 100%; }
    .nav-list { display: flex; flex-direction: column; gap: 0.8rem; align-items: center; }
    .nav-item { width: 100%; max-width: 300px; opacity: 1; }
    .nav-item a {
        display: block; width: 100%; text-align: center; padding: 0.8rem 0;
        border: 1px solid var(--accent-color); color: var(--text-sub);
    }
}