/* ===================================
   White Snow Paws - メインスタイルシート
   ペットライフスタイルブランド
   ウッド調 × 雪国クリーン デザイン
   =================================== */

/* --- カスタムプロパティ（デザイントークン） --- */
:root {
    /* カラースキーム */
    --color-bg-main: #FAF8F5;
    --color-bg-wood: #E8DDD0;
    --color-bg-dark: #3C3228;
    --color-text-main: #2C241C;
    --color-text-sub: #7A6B5D;
    --color-accent: #4A7C59;
    --color-accent-hover: #3A6349;
    --color-accent-warm: #C4956A;
    --color-wood-light: #D4C4B0;
    --color-wood-medium: #A08060;
    --color-wood-dark: #8B6F47;
    --color-dark: #2C241C;
    --color-white: #FFFFFF;
    --color-snow: #FAF8F5;

    /* タイポグラフィ */
    --font-heading-en: 'Cinzel', serif;
    --font-heading-jp: 'YuMincho', 'Yu Mincho', 'ヒラギノ明朝 ProN', serif;
    --font-body-jp: 'Noto Serif JP', 'YuMincho', 'Yu Mincho', serif;

    /* スペーシング */
    --section-padding: 60px 20px;
    --container-max: 1200px;

    /* トランジション */
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

html {
    width: 100%;
}
body {
    overflow-x: hidden;
    width: 100%;
    overscroll-behavior-y: none;
}

body {
    font-family: var(--font-body-jp);
    color: var(--color-text-main);
    background-color: var(--color-bg-main);
    font-size: 14px;
    line-height: 1.8;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-image: url('../images/herringbone.png');
    background-repeat: repeat;
    background-size: 300px;
    opacity: 0.5;
    /* さらに濃くしました（0.3 → 0.5） */
    mix-blend-mode: multiply;
    /* 背景色に自然に馴染ませる */
    z-index: -10;
    pointer-events: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================================
   ウッドテクスチャ & 装飾パターン
   =================================== */

/* 木目グラデーション背景パターン */
.section-wood {
    background:
        repeating-linear-gradient(90deg,
            transparent,
            transparent 120px,
            rgba(139, 111, 71, 0.03) 120px,
            rgba(139, 111, 71, 0.03) 121px),
        repeating-linear-gradient(0deg,
            transparent,
            transparent 200px,
            rgba(139, 111, 71, 0.02) 200px,
            rgba(139, 111, 71, 0.02) 201px),
        linear-gradient(180deg, #E8DDD0 0%, #EDE3D7 50%, #E8DDD0 100%);
}

/* 木枠フレーム */
.wood-frame {
    border: 3px solid var(--color-wood-medium);
    border-radius: 4px;
    box-shadow:
        inset 0 0 0 1px rgba(139, 111, 71, 0.2),
        0 4px 16px rgba(44, 36, 28, 0.12),
        0 1px 3px rgba(139, 111, 71, 0.15);
    position: relative;
}

.wood-frame::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 6px;
    background: linear-gradient(135deg,
            #C4A67D 0%, #A08060 25%, #8B6F47 50%, #A08060 75%, #C4A67D 100%);
    z-index: -1;
    opacity: 0.6;
}

/* 小サイズ木枠 */
.wood-frame-sm {
    border: 2px solid var(--color-wood-medium);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(44, 36, 28, 0.1);
}

.wood-frame-sm img {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

/* 木の看板風カード */
.wood-sign {
    background:
        linear-gradient(135deg, rgba(212, 196, 176, 0.4) 0%, transparent 50%),
        linear-gradient(180deg, #FAF8F5 0%, #F5EDE3 100%);
    border: 2px solid var(--color-wood-medium);
    border-radius: 6px;
    box-shadow:
        0 4px 12px rgba(44, 36, 28, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    position: relative;
}

.wood-sign::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 10px;
    background: var(--color-wood-medium);
    border-radius: 3px 3px 0 0;
}

/* ヘリンボーンセクション区切り */
.herringbone-divider {
    width: 100%;
    height: 12px;
    background:
        repeating-linear-gradient(-45deg,
            var(--color-wood-light),
            var(--color-wood-light) 5px,
            transparent 5px,
            transparent 10px),
        repeating-linear-gradient(45deg,
            var(--color-wood-light),
            var(--color-wood-light) 5px,
            transparent 5px,
            transparent 10px);
    opacity: 0.5;
}

/* 木板風セクション区切り */
.wood-plank-divider {
    width: 100%;
    height: 16px;
    background:
        linear-gradient(180deg,
            #A08060 0%,
            #C4A67D 20%,
            #B89468 40%,
            #A08060 60%,
            #8B6F47 80%,
            #A08060 100%);
    position: relative;
    box-shadow:
        inset 0 2px 4px rgba(255, 255, 255, 0.2),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15),
        0 2px 6px rgba(44, 36, 28, 0.15);
}

.wood-plank-divider::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(90deg,
            transparent 0px,
            transparent 80px,
            rgba(0, 0, 0, 0.08) 80px,
            rgba(0, 0, 0, 0.08) 82px,
            transparent 82px,
            transparent 160px);
}

/* ===================================
   ヘッダー
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-base),
        box-shadow var(--transition-base);
    background:
        linear-gradient(180deg, rgba(44, 36, 28, 0.85) 0%, rgba(44, 36, 28, 0.7) 100%);
    backdrop-filter: blur(8px);
}

.header.scrolled {
    background:
        linear-gradient(180deg, rgba(44, 36, 28, 0.95) 0%, rgba(44, 36, 28, 0.9) 100%);
    box-shadow: 0 2px 20px rgba(44, 36, 28, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: var(--container-max);
    margin: 0 auto;
}

/* ハンバーガーメニューボタン */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-snow);
    transition: var(--transition-base);
    border-radius: 1px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ロゴ */
.logo {
    font-family: var(--font-heading-en);
    font-size: 18px;
    font-weight: 700;
    color: var(--color-snow);
    letter-spacing: 2px;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.3;
}

.logo-mark {
    font-size: 12px;
    opacity: 0.7;
    letter-spacing: 4px;
    margin-bottom: -2px;
}

/* SVGアイコン共通 */
.header-icons button svg {
    display: block;
}

.feature-icon {
    flex-shrink: 0;
}

.step-icon svg {
    stroke: var(--color-white);
}

/* ヘッダーアイコン群 */
.header-icons {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* アイコンボタン（縦並び：アイコン上・ラベル下） */
.header-icon-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 10px;
    color: var(--color-snow);
    position: relative;
    border-radius: 4px;
    transition: background var(--transition-base);
}

.header-icon-btn:hover {
    background: rgba(250, 248, 245, 0.08);
}

/* アイコン下のテキストラベル */
.header-icon-label {
    font-family: var(--font-heading-en);
    font-size: 9px;
    letter-spacing: 1px;
    color: rgba(250, 248, 245, 0.7);
    line-height: 1;
}

.cart-badge {
    position: absolute;
    top: 2px;
    right: 6px;
    background-color: var(--color-accent);
    color: white;
    font-size: 9px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body-jp);
}

/* デスクトップナビ */
.desktop-nav {
    display: none;
    border-top: 1px solid rgba(212, 196, 176, 0.2);
    background: rgba(44, 36, 28, 0.3);
}

.desktop-nav ul {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 10px 0;
    max-width: var(--container-max);
    margin: 0 auto;
}

.desktop-nav a {
    font-family: var(--font-heading-en);
    font-size: 12px;
    letter-spacing: 2px;
    color: rgba(250, 248, 245, 0.7);
    transition: color var(--transition-base);
    position: relative;
}

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-accent-warm);
    transition: width var(--transition-base);
}

.desktop-nav a:hover {
    color: var(--color-snow);
}

.desktop-nav a:hover::after {
    width: 100%;
}

/* モバイルメニュー（スライドイン） */
.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background:
        linear-gradient(180deg, #3C3228 0%, #2C241C 100%);
    z-index: 999;
    transition: left 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    padding: 80px 30px 30px;
    overflow-y: auto;
}

.mobile-menu.active {
    left: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 36, 28, 0.6);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-menu li {
    border-bottom: 1px solid rgba(160, 128, 96, 0.3);
}

.mobile-menu a {
    display: block;
    padding: 16px 0;
    font-family: var(--font-heading-en);
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--color-snow);
    transition: color var(--transition-base);
}

.mobile-menu a .menu-jp {
    display: block;
    font-family: var(--font-body-jp);
    font-size: 11px;
    color: rgba(250, 248, 245, 0.5);
    letter-spacing: 1px;
    margin-top: 2px;
}

/* ===================================
   ヒーローセクション
   =================================== */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 500px;
    max-height: 900px;
}

.hero .swiper {
    width: 100%;
    height: 100%;
}

.hero .swiper-slide {
    position: relative;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom,
            rgba(44, 36, 28, 0.2) 0%,
            rgba(44, 36, 28, 0.3) 50%,
            rgba(44, 36, 28, 0.65) 100%);
}

.hero-content {
    position: absolute;
    bottom: 20%;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--color-white);
    padding: 0 20px;
    z-index: 2;
}

.hero-copy-en {
    font-family: var(--font-heading-en);
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 12px;
    opacity: 0.9;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.hero-copy-jp {
    font-family: var(--font-heading-jp);
    font-size: 22px;
    line-height: 1.7;
    letter-spacing: 2px;
    margin-bottom: 28px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

/* ボタン（木のタグ風） */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: linear-gradient(180deg, #4A7C59 0%, #3A6349 100%);
    color: var(--color-white);
    font-family: var(--font-heading-en);
    font-size: 13px;
    letter-spacing: 3px;
    border-radius: 6px;
    transition: background var(--transition-base),
        transform var(--transition-base),
        box-shadow var(--transition-base);
    box-shadow:
        0 2px 8px rgba(74, 124, 89, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(58, 99, 73, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(180deg, #3A6349 0%, #2D5039 100%);
    transform: translateY(-2px);
    box-shadow:
        0 4px 16px rgba(74, 124, 89, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-primary .arrow {
    transition: transform var(--transition-base);
}

.btn-primary:hover .arrow {
    transform: translateX(4px);
}

/* Swiperページネーション */
.hero .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
}

.hero .swiper-pagination-bullet-active {
    background: var(--color-white);
}

/* ===================================
   お知らせバー
   =================================== */
.notice-bar {
    background:
        linear-gradient(90deg, #3C3228 0%, #4A3C30 50%, #3C3228 100%);
    color: var(--color-snow);
    overflow: hidden;
    padding: 10px 0;
    position: relative;
    border-top: 2px solid var(--color-wood-medium);
    border-bottom: 2px solid var(--color-wood-medium);
}

.notice-ticker {
    display: flex;
    animation: ticker 20s linear infinite;
    white-space: nowrap;
}

.notice-ticker span {
    font-size: 12px;
    letter-spacing: 1px;
    padding: 0 40px;
    flex-shrink: 0;
}

@keyframes ticker {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* ===================================
   セクション共通
   =================================== */
.section {
    padding: var(--section-padding);
}

.section-heading {
    text-align: center;
    margin-bottom: 48px;
}

.section-heading-en {
    font-family: var(--font-heading-en);
    font-size: 13px;
    letter-spacing: 4px;
    color: var(--color-wood-dark);
    margin-bottom: 8px;
}

.section-heading-jp {
    font-family: var(--font-heading-jp);
    font-size: 24px;
    color: var(--color-text-main);
    letter-spacing: 2px;
    /* 焼印風テキスト */
    text-shadow: 1px 1px 0 rgba(139, 111, 71, 0.15);
}

.section-heading-line {
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg,
            var(--color-wood-medium),
            var(--color-wood-dark),
            var(--color-wood-medium));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===================================
   BioThane特集セクション
   =================================== */
.biothane-feature {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.biothane-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.biothane-image {
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.biothane-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.biothane-text h3 {
    font-family: var(--font-heading-jp);
    font-size: 20px;
    color: var(--color-text-main);
    margin-bottom: 16px;
    line-height: 1.6;
}

.biothane-text p {
    font-size: 14px;
    color: var(--color-text-sub);
    line-height: 2;
    margin-bottom: 20px;
}

/* 特徴バッジ */
.feature-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: rgba(74, 124, 89, 0.08);
    border: 1px solid rgba(74, 124, 89, 0.2);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
}

.feature-badge-icon {
    font-size: 14px;
}

/* 手作りの理由 */
.handmade-reason {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--color-bg-main);
    border-radius: 8px;
    border: 1px solid var(--color-wood-light);
    box-shadow: 0 4px 12px rgba(44, 36, 28, 0.05);
}

.handmade-reason-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(160, 128, 96, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-wood-dark);
}

.handmade-reason-content {
    display: flex;
    flex-direction: column;
}

.handmade-reason-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-main);
    margin-bottom: 4px;
}

.handmade-reason-price {
    font-family: var(--font-heading-en);
    font-size: 20px;
    color: #C0392B;
    font-weight: 700;
    margin-bottom: 8px;
}

.handmade-reason-price span {
    font-family: var(--font-body-jp);
    font-size: 11px;
    color: var(--color-text-sub);
    font-weight: 400;
    margin-left: 4px;
}

.handmade-reason-text {
    font-size: 13px;
    color: var(--color-text-sub);
    line-height: 1.6;
}

/* BioThaneカルーセル */
.biothane-gallery .swiper-slide {
    width: 200px;
}

/* ===================================
   BioThane素材セクション（特性紹介）
   =================================== */

/* イントロテキスト */
.biothane-intro-text {
    font-size: 14px;
    color: var(--color-text-sub);
    line-height: 1.9;
    margin-top: 16px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 素材セクション全体 */
.biothane-material {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 2px solid var(--color-wood-light);
}

/* 特徴画像 */
.biothane-features-image {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 32px;
}

.biothane-features-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 素材説明テキスト */
.biothane-material-text {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 28px;
    background: var(--color-white);
    border-radius: 8px;
    border: 1px solid var(--color-wood-light);
    box-shadow: 0 2px 12px rgba(44, 36, 28, 0.06);
}

.biothane-material-lead {
    font-family: var(--font-heading-jp);
    font-size: 15px;
    color: var(--color-text-main);
    line-height: 1.9;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-wood-light);
}

.biothane-material-text p {
    font-size: 13px;
    color: var(--color-text-sub);
    line-height: 2;
}

.biothane-material-text strong {
    color: var(--color-accent);
    font-weight: 700;
}


.biothane-feature-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* 特性カード */
.biothane-feature-card {
    background: var(--color-white);
    border: 1px solid var(--color-wood-light);
    border-radius: 10px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: 0 2px 12px rgba(44, 36, 28, 0.06);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.biothane-feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(44, 36, 28, 0.12);
}

/* 横幅いっぱいの特性カード（カラーオーダー） */
.biothane-feature-card-wide {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
}

/* 特性カードのアイコン */
.biothane-feature-card-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 特性カードの見出し */
.biothane-feature-card h4 {
    font-family: var(--font-heading-jp);
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-main);
    line-height: 1.4;
}

/* 特性カードの説明文 */
.biothane-feature-card p {
    font-size: 12px;
    color: var(--color-text-sub);
    line-height: 1.8;
}



/* ===================================
   商品一覧セクション
   =================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.product-card {
    background: var(--color-white);
    overflow: hidden;
    transition: box-shadow var(--transition-base),
        transform var(--transition-base);
    cursor: pointer;
}

.product-card:hover {
    box-shadow: 0 8px 30px rgba(44, 36, 28, 0.15);
    transform: translateY(-4px);
}

.product-card-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    position: relative;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-card-image img {
    transform: scale(1.05);
}

/* 商品タグ */
.product-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--color-accent);
    color: white;
    font-family: var(--font-heading-en);
    font-size: 10px;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: 3px;
    z-index: 2;
}

.product-tag.new {
    background: var(--color-accent-warm);
}

.product-tag.sale {
    background: #C0392B;
}

.product-card-info {
    padding: 12px;
}

.product-card-info h4 {
    font-family: var(--font-body-jp);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 2px;
    line-height: 1.4;
}

.product-desc {
    font-size: 11px;
    color: var(--color-text-sub);
    margin-bottom: 6px;
}

.product-card-info .price {
    font-family: var(--font-heading-en);
    font-size: 16px;
    color: var(--color-text-main);
    font-weight: 600;
    margin-bottom: 8px;
}

.product-card-info .price-tax {
    font-size: 11px;
    color: var(--color-text-sub);
    font-weight: 400;
}

.price-original {
    font-size: 12px;
    color: var(--color-text-sub);
    text-decoration: line-through;
    font-weight: 400;
}

/* カラードット */
.color-dots {
    display: flex;
    gap: 6px;
}

.color-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.color-dot:hover {
    transform: scale(1.3);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

/* ===================================
   カテゴリーセクション
   =================================== */
.category-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.category-card {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 16 / 9;
    border: 2px solid var(--color-wood-medium);
}

.category-card-main {
    aspect-ratio: 16 / 9;
}

.category-card-sub {
    aspect-ratio: 4 / 3;
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.category-card:hover img {
    transform: scale(1.05);
}

.category-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
            rgba(44, 36, 28, 0.75) 0%,
            rgba(44, 36, 28, 0.15) 60%);
}

.category-card:hover::before {
    content: '';
    position: absolute;
    inset: 4px;
    border: 2px solid var(--color-wood-light);
    border-radius: 3px;
    z-index: 2;
    opacity: 0.8;
}

.category-card-text {
    position: absolute;
    bottom: 16px;
    left: 16px;
    z-index: 2;
    color: var(--color-white);
}

.category-card-text h3 {
    font-family: var(--font-heading-en);
    font-size: 18px;
    letter-spacing: 3px;
    margin-bottom: 4px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.category-card-text p {
    font-size: 12px;
    opacity: 0.85;
    letter-spacing: 1px;
}

/* Coming Soonオーバーレイ */
.category-coming-soon {
    position: absolute;
    inset: 0;
    background: rgba(44, 36, 28, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.category-coming-soon span {
    font-family: var(--font-heading-en);
    font-size: 16px;
    letter-spacing: 6px;
    color: var(--color-snow);
    padding: 10px 24px;
    border: 2px solid rgba(250, 248, 245, 0.5);
    background: rgba(44, 36, 28, 0.4);
    backdrop-filter: blur(4px);
}

/* ===================================
   ストーリーセクション（パララックス）
   =================================== */
.story-section {
    position: relative;
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.story-bg {
    position: absolute;
    top: -20%;
    left: 0;
    width: 100%;
    height: 140%;
    object-fit: cover;
    z-index: 0;
}

.story-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
            rgba(44, 36, 28, 0.35),
            rgba(44, 36, 28, 0.55));
    z-index: 1;
}

/* 木の窓枠風フレーム */
.story-frame {
    position: relative;
    z-index: 2;
    padding: 40px 30px;
    border: 4px solid rgba(160, 128, 96, 0.5);
    border-radius: 8px;
    box-shadow:
        inset 0 0 30px rgba(0, 0, 0, 0.2),
        0 0 0 8px rgba(139, 111, 71, 0.15);
    max-width: 600px;
    margin: 0 20px;
    background: rgba(44, 36, 28, 0.2);
    backdrop-filter: blur(2px);
}

.story-content {
    text-align: center;
    color: var(--color-white);
}

.story-content h2 {
    font-family: var(--font-heading-jp);
    font-size: 22px;
    line-height: 1.8;
    letter-spacing: 2px;
    margin-bottom: 12px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.story-sub {
    font-size: 13px;
    opacity: 0.85;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border: 2px solid rgba(250, 248, 245, 0.6);
    color: var(--color-white);
    font-family: var(--font-heading-en);
    font-size: 12px;
    letter-spacing: 3px;
    border-radius: 4px;
    transition: background-color var(--transition-base),
        transform var(--transition-base),
        border-color var(--transition-base);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(250, 248, 245, 0.9);
    transform: translateY(-2px);
}

/* ===================================
   オーダーの流れ
   =================================== */
.order-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

.order-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
}

.step-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, #3A6349 100%);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    position: relative;
    box-shadow: 0 3px 10px rgba(74, 124, 89, 0.3);
}

.step-icon::after {
    content: '';
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 32px;
    background: linear-gradient(to bottom, var(--color-wood-medium), transparent);
}

.order-step:last-child .step-icon::after {
    display: none;
}

.step-content h4 {
    font-family: var(--font-heading-en);
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.step-content h3 {
    font-family: var(--font-heading-jp);
    font-size: 18px;
    margin-bottom: 6px;
}

.step-content p {
    font-size: 13px;
    color: var(--color-text-sub);
    line-height: 1.8;
}

/* ===================================
   お客様の声 / ギャラリー
   =================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
}

.gallery-item {
    background: var(--color-white);
    overflow: hidden;
    transition: transform var(--transition-base),
        box-shadow var(--transition-base);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(44, 36, 28, 0.12);
}

.gallery-item-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.gallery-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item-text {
    padding: 16px;
}

.gallery-item-text p {
    font-size: 13px;
    color: var(--color-text-sub);
    line-height: 1.8;
    font-style: italic;
}

.gallery-item-text .reviewer {
    font-size: 12px;
    color: var(--color-text-sub);
    margin-top: 8px;
    font-style: normal;
    opacity: 0.7;
    display: block;
}

/* ===================================
   Instagramフィード
   =================================== */
.insta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-bottom: 32px;
}

.insta-item {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid rgba(160, 128, 96, 0.2);
}

.insta-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.insta-item:hover img {
    transform: scale(1.08);
}

.insta-item-overlay {
    position: absolute;
    inset: 0;
    background: rgba(44, 36, 28, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    color: white;
    font-size: 14px;
    gap: 4px;
}

.insta-item:hover .insta-item-overlay {
    opacity: 1;
}

.insta-handle {
    text-align: center;
    font-family: var(--font-heading-en);
    font-size: 14px;
    color: var(--color-wood-dark);
    letter-spacing: 1px;
    margin-bottom: 24px;
}

/* ===================================
   フッター
   =================================== */
.footer {
    background:
        repeating-linear-gradient(90deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.02) 100px,
            rgba(255, 255, 255, 0.02) 101px),
        linear-gradient(180deg, #2C241C 0%, #1E1812 100%);
    color: rgba(250, 248, 245, 0.8);
    padding: 48px 20px 24px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            #8B6F47 0%, #A08060 25%, #C4A67D 50%, #A08060 75%, #8B6F47 100%);
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-logo {
    text-align: center;
    margin-bottom: 36px;
}

.footer-logo .logo {
    color: var(--color-snow);
    font-size: 22px;
}

.footer-logo .logo-mark {
    font-size: 10px;
    opacity: 0.5;
}

.footer-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 36px;
}

.footer-column h4 {
    font-family: var(--font-heading-en);
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--color-wood-light);
    margin-bottom: 12px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-column a {
    font-size: 12px;
    color: rgba(250, 248, 245, 0.5);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--color-snow);
}

.footer-social {
    display: flex;
    gap: 16px;
    margin-top: 4px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(160, 128, 96, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: border-color var(--transition-base),
        background-color var(--transition-base);
}

.footer-social a:hover {
    border-color: var(--color-accent-warm);
    background-color: rgba(196, 149, 106, 0.15);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(160, 128, 96, 0.2);
    font-size: 11px;
    color: rgba(250, 248, 245, 0.3);
    letter-spacing: 1px;
}

/* ===================================
   スマホ用ボトムメニューバー
   =================================== */
.mobile-bottom-nav {
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
    margin: 0;
    padding: 0;
    background: var(--color-white);
    box-shadow: 0 -2px 10px rgba(44, 36, 28, 0.1);
    z-index: 1000;
    /* 重なり順を強化 */
    border-top: 1px solid var(--color-wood-light);
    padding-bottom: env(safe-area-inset-bottom);

    /* 固定表示の安定化策 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    will-change: transform;
}

.mobile-bottom-nav ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.mobile-bottom-nav li {
    flex: 1;
}

.mobile-bottom-nav a,
.mobile-bottom-nav button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-text-sub);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 9px;
    font-family: var(--font-heading-en);
    letter-spacing: 0.5px;
    gap: 4px;
    transition: color var(--transition-base);
}

.mobile-bottom-nav a:hover,
.mobile-bottom-nav button:hover {
    color: var(--color-accent);
}

.cart-badge-bottom {
    position: absolute;
    top: 6px;
    right: calc(50% - 14px);
    background-color: var(--color-accent);
    color: white;
    font-size: 9px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body-jp);
}

/* はみ出し防止の追加措置 */
* {
    box-sizing: border-box;
    max-width: 100%;
}

img,
video,
canvas,
svg {
    max-width: 100%;
    height: auto;
}


/* ===================================
   フェードアップアニメーション
   =================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* スタガー効果 */
.stagger-1 {
    transition-delay: 0.1s;
}

.stagger-2 {
    transition-delay: 0.2s;
}

.stagger-3 {
    transition-delay: 0.3s;
}

.stagger-4 {
    transition-delay: 0.4s;
}

/* ===================================
   テキスト中央揃えユーティリティ
   =================================== */
.text-center {
    text-align: center;
}

.mt-32 {
    margin-top: 32px;
}

/* ===================================
   レスポンシブ（タブレット 768px~）
   =================================== */
@media (min-width: 768px) {
    :root {
        --section-padding: 80px 40px;
    }

    body {
        font-size: 15px;
    }

    .hamburger {
        display: none;
    }

    .desktop-nav {
        display: block;
    }

    .header-inner {
        padding: 16px 40px;
    }

    .logo {
        font-size: 22px;
    }

    .hero-copy-jp {
        font-size: 30px;
    }

    .hero-copy-en {
        font-size: 15px;
    }

    .section-heading-jp {
        font-size: 28px;
    }

    /* BioThane特集 */
    .biothane-main {
        flex-direction: row;
        align-items: center;
    }

    .biothane-image {
        flex: 1;
        min-width: 0;
    }

    .biothane-text {
        flex: 1;
        min-width: 0;
    }

    /* 商品グリッド */
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    /* カテゴリ */
    .category-main {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 16px;
    }

    .category-card-main {
        aspect-ratio: auto;
        grid-row: 1 / 1;
    }

    .category-card-text h3 {
        font-size: 22px;
    }

    /* ギャラリー */
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* インスタ */
    .insta-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 6px;
    }

    /* フッター */
    .footer-columns {
        grid-template-columns: repeat(3, 1fr);
    }

    .mobile-bottom-nav {
        display: none;
    }

    /* オーダーステップ */
    .order-steps {
        flex-direction: row;
        max-width: 100%;
        gap: 24px;
    }

    .order-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
        flex: 1;
    }

    .step-icon::after {
        top: 50%;
        left: 60px;
        transform: translateY(-50%);
        width: calc(100% + 24px);
        height: 2px;
        background: linear-gradient(to right, var(--color-wood-medium), transparent);
    }

    /* ストーリーフレーム */
    .story-frame {
        padding: 50px 60px;
    }
}

/* ===================================
   レスポンシブ（デスクトップ 1024px~）
   =================================== */
@media (min-width: 1024px) {
    :root {
        --section-padding: 100px 40px;
    }

    body {
        font-size: 16px;
    }

    .logo {
        font-size: 24px;
    }

    .hero-copy-jp {
        font-size: 36px;
    }

    .section-heading-jp {
        font-size: 32px;
    }

    .category-card-text h3 {
        font-size: 26px;
    }

    .biothane-text h3 {
        font-size: 24px;
    }

    .biothane-gallery .swiper-slide {
        width: 260px;
    }

    .story-section {
        height: 70vh;
    }

    .story-content h2 {
        font-size: 28px;
    }

    .product-card-info h4 {
        font-size: 14px;
    }
}

/* ===================================
   追加デザイン & フローティングCTA
   =================================== */

/* 焼印風テキスト効果 */
.wood-burn {
    color: #4A3C30;
    text-shadow:
        0.5px 0.5px 0px rgba(255, 255, 255, 0.1),
        -0.5px -0.5px 1px rgba(0, 0, 0, 0.5);
    background: linear-gradient(180deg, #4A3C30 0%, #2C241C 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* フフローティングCTA（モバイル用） */
.floating-cta {
    position: fixed;
    bottom: 80px;
    /* ボトムナビの上 */
    right: 20px;
    z-index: 900;
    transform: translateY(100px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275),
        opacity 0.3s ease,
        visibility 0.3s ease;
}

.floating-cta.visible {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.floating-cta .btn-primary {
    padding: 12px 24px;
    box-shadow: 0 8px 24px rgba(44, 36, 28, 0.3);
    border-radius: 50px;
    /* 丸みを強調 */
}

@media (min-width: 768px) {
    .floating-cta {
        display: none;
    }
}

/* よりリアルな木目表現の強化 */
.section-wood::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('../images/textures/wood_overlay.png');
    /* あれば */
    opacity: 0.05;
    pointer-events: none;
}

/* カートバッジの微調整 */
.cart-badge-bottom {
    position: absolute;
    top: 5px;
    right: 50%;
    transform: translateX(12px);
    background-color: var(--color-accent);
    color: white;
    font-size: 10px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===================================
   パスワード保護（限定公開）
   =================================== */
body.is-locked {
    overflow: hidden;
}

.lock-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background:
        radial-gradient(circle at center, rgba(44, 36, 28, 0.9) 0%, rgba(20, 15, 10, 1) 100%),
        url('../images/herringbone.png');
    background-blend-mode: multiply;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.lock-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.lock-card {
    background: var(--color-bg-main);
    padding: 40px 30px;
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.lock-header {
    margin-bottom: 24px;
}

.lock-header h1 {
    font-family: var(--font-heading-en);
    font-size: 24px;
    margin-top: 8px;
}

.lock-msg {
    font-size: 13px;
    color: var(--color-text-sub);
    margin-bottom: 32px;
    line-height: 1.6;
}

.lock-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lock-form input {
    padding: 14px;
    border: 2px solid var(--color-wood-light);
    border-radius: 4px;
    background: var(--color-white);
    font-size: 16px;
    text-align: center;
    transition: border-color var(--transition-base);
}

.lock-form input:focus {
    border-color: var(--color-wood-medium);
    outline: none;
}

.lock-error {
    color: #C0392B;
    font-size: 12px;
    margin-top: 16px;
    display: none;
}

.lock-error.visible {
    display: block;
    animation: shake 0.4s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

/* フッターボトム（コピーライト行）リンク */
.footer-bottom a {
    color: rgba(250, 248, 245, 0.45);
    font-size: 11px;
    letter-spacing: 1px;
    text-decoration: none;
    transition: color var(--transition-base);
    margin-right: 20px;
}

.footer-bottom a:hover {
    color: rgba(250, 248, 245, 0.8);
}
/* ===================================
   カートに入れるボタン（商品カード用）
   =================================== */
.btn-add-cart {
    display: block;
    width: 100%;
    margin-top: 12px;
    padding: 10px 16px;
    background: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    font-family: var(--font-body-jp);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 4px;
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.btn-add-cart:hover {
    background: var(--color-accent);
    color: var(--color-snow);
    transform: translateY(-1px);
}

/* 商品カードの画像をa要素にした場合 */
.product-card-image {
    display: block;
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
}

.product-card-info h4 a {
    color: var(--color-text-main);
    text-decoration: none;
    transition: color var(--transition-base);
}

.product-card-info h4 a:hover {
    color: var(--color-accent);
}

/* カートバッジのhide/show（0件のときは非表示） */
.cart-badge,
.cart-badge-bottom {
    display: none;
}

/* mt-32 ユーティリティ */
.mt-32 {
    margin-top: 32px;
}

/* ===================================
   サブページ共通ヘッダー（scrolled状態）
   =================================== */
.header.scrolled .desktop-nav a {
    color: var(--color-text-main);
}

/* ===================================
   スマホ: ヒーロー広角表示
   =================================== */
@media (max-width: 767px) {
    .hero {
        height: 110vw;
        min-height: 320px;
        max-height: 520px;
    }
}