/* ============================================
   Traditional House West Ikebukuro — Styles
   和洋折衷・大正ロマン
   Deep Crimson × Parchment × Antique Gold
   ============================================ */

:root {
  --bg:          #f5ede0;   /* 羊皮紙 ivory parchment */
  --bg-soft:     #ede3d0;   /* 深めの羊皮紙 */
  --ink:         #1e1210;   /* 温かみのある黒 */
  --ink-soft:    #5a3d35;   /* 深みのある茶 */
  --muted:       #8c7060;   /* タウープ */
  --line:        #d4bea8;   /* 古びたゴールドベージュ */
  --accent:      #8b2535;   /* 深紅 deep crimson */
  --accent-dark: #6b1520;   /* より深い深紅 */
  --accent-gold: #a07840;   /* アンティークゴールド */
  --dark:        #140d0d;   /* 深みのある黒 */
  --white:       #ffffff;
  --max:         1240px;
  --transition:  0.3s ease;
  --font-body:   "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-serif:  "Playfair Display", "Hiragino Mincho ProN", serif;
}

html[lang="ko"] body { font-family: "Noto Sans KR", var(--font-body); }
html[lang="zh"] body { font-family: "Noto Sans TC", var(--font-body); }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(245, 237, 224, 0.93);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: all var(--transition);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}

/* 家紋風の漢字アイコン */
.brand-kamon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  font-family: "Hiragino Mincho ProN", "Noto Serif JP", serif;
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0;
  flex-shrink: 0;
  transition: all var(--transition);
}

.brand:hover .brand-kamon {
  background: var(--accent);
  color: var(--white);
}

.brand-text { white-space: nowrap; }

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 400;
  text-transform: uppercase;
}

.nav a {
  color: var(--ink-soft);
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--accent);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 2px;
  letter-spacing: 0.1em;
  display: inline-block;
  white-space: nowrap;
  flex: 0 0 auto;
  min-width: 64px;
  text-align: center;
  line-height: 1.4;
}

.nav-cta:hover { background: var(--accent-dark) !important; }

.lang-switcher {
  display: flex;
  gap: 4px;
  font-size: 11px;
}

.lang-switcher button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 6px 10px;
  cursor: pointer;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: all var(--transition);
  white-space: nowrap;
  flex: 0 0 auto;
  min-width: 44px;
  line-height: 1.4;
}

.lang-switcher button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-switcher button.active {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: #1e0e0e; /* 写真がない場合の深紅黒フォールバック */
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.6s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
  animation: heroZoom 8s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1.06); }
  to   { transform: scale(1.00); }
}

/* 大正ロマン風オーバーレイ — 暖色寄りのグラデーション */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 8, 8, 0.30) 0%,
    rgba(20, 8, 8, 0.55) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
  animation: fadeUp 1.4s ease-out;
}

.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.5em;
  font-weight: 400;
  margin-bottom: 24px;
  opacity: 0.85;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(44px, 7.5vw, 90px);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 13px;
  letter-spacing: 0.3em;
  font-weight: 300;
  opacity: 0.92;
}

/* ヒーロードット */
.hero-dots {
  position: absolute;
  bottom: 96px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 12px;
}

.hero-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  border: 1px solid rgba(255,255,255,0.55);
  cursor: pointer;
  padding: 0;
  transition: all 0.4s ease;
}

.hero-dot:hover { background: rgba(255,255,255,0.65); transform: scale(1.15); }
.hero-dot.active { background: var(--white); border-color: var(--white); width: 28px; border-radius: 5px; }

/* スクロールインジケーター */
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 24px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.55);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.hero-scroll span {
  width: 2px;
  height: 8px;
  background: var(--white);
  border-radius: 1px;
  animation: scrollDot 2s infinite;
}

@keyframes scrollDot {
  0%,100% { opacity:1; transform:translateY(0); }
  50%      { opacity:0; transform:translateY(12px); }
}

@keyframes fadeUp {
  from { opacity:0; transform:translateY(24px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ============================================
   Sections — 共通
   ============================================ */
.section { padding: 120px 0; }

/* 大正装飾：eyebrow にアクセントライン */
.eyebrow {
  display: inline-block;
  font-size: 15px;
  letter-spacing: 0.45em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
  position: relative;
}

.eyebrow::after {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background: var(--accent);
  margin-top: 8px;
  opacity: 0.6;
}

.eyebrow-light { color: rgba(184, 138, 90, 0.95); }
.eyebrow-light::after { background: rgba(184,138,90,0.6); }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.5vw, 50px);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 32px;
  letter-spacing: 0.01em;
}

.section-title-light { color: var(--white); }

/* 中国語表示時は、句読点が日本語フォントに落ちて余白が広く出てしまう問題を回避するため、
   中国語向けのフォント（Noto Sans TC/SC・PingFang）を欧文フォントの直後に置く。 */
html[lang="zh"] .section-title,
html[lang="zh"] .lead,
html[lang="zh"] .about-note,
html[lang="zh"] .review-text,
html[lang="zh"] .review-translation,
html[lang="zh"] .hero-title,
html[lang="zh"] .hero-eyebrow,
html[lang="zh"] .hero-sub {
  font-family: "Playfair Display", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Hiragino Mincho ProN", serif;
}
html[lang="zh-CN"] .section-title,
html[lang="zh-CN"] .lead,
html[lang="zh-CN"] .about-note,
html[lang="zh-CN"] .review-text,
html[lang="zh-CN"] .review-translation,
html[lang="zh-CN"] .hero-title,
html[lang="zh-CN"] .hero-eyebrow,
html[lang="zh-CN"] .hero-sub {
  font-family: "Playfair Display", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Mincho ProN", serif;
}

.lead {
  font-size: 17px;
  font-weight: 300;
  line-height: 1.95;
  color: var(--ink-soft);
  max-width: 720px;
}

/* About: 「大正ロマン」注釈（日本語以外でのみ表示）。
   翻訳辞書で空文字をセットされた言語（=日本語）では :empty で非表示。 */
.about-note {
  display: block;
  max-width: 720px;
  margin-top: 28px;
  padding: 18px 22px;
  border-left: 2px solid var(--accent);
  background: rgba(184, 138, 90, 0.06);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
  font-weight: 300;
}
.about-note strong {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.about-note:empty { display: none; }

.section-about { padding-top: 140px; }

/* ============================================
   Highlights
   ============================================ */
.section-highlights { background: var(--bg-soft); }

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.card {
  background: var(--white);
  padding: 40px 28px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  transition: all var(--transition);
  position: relative;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(139, 37, 53, 0.07);
}

.card-num {
  font-family: var(--font-serif);
  font-size: 30px;
  color: var(--accent);
  font-weight: 400;
  font-style: italic;
  margin-bottom: 16px;
  opacity: 0.8;
}

.card h3 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--ink);
}

.card p {
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-soft);
  line-height: 1.85;
}

/* ============================================
   Gallery
   ============================================ */
.gallery-categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 56px;
}

.cat-card {
  position: relative;
  aspect-ratio: 4 / 3;
  border: none;
  padding: 0;
  margin: 0;
  background: var(--bg-soft);
  cursor: pointer;
  overflow: hidden;
  font-family: inherit;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 48px rgba(139, 37, 53, 0.12);
}

.cat-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.cat-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,8,8,0) 45%, rgba(20,8,8,0.7) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px 30px;
  color: var(--white);
}

.cat-card-name {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 5px;
}

.cat-card-more {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.8;
  transition: transform 0.3s ease;
}

.cat-card:hover .cat-card-more {
  transform: translateX(4px);
  opacity: 1;
}

/* モーダルギャラリー */
.gallery-detail {
  position: fixed;
  inset: 0;
  background: rgba(20, 8, 8, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 500;
  overflow-y: auto;
  padding: 40px 16px;
  animation: galleryModalFade 0.25s ease-out;
}
.gallery-detail[hidden] { display: none; }

@keyframes galleryModalFade {
  from { opacity:0; }
  to   { opacity:1; }
}

.gallery-detail-panel {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--bg);
  border-radius: 4px;
  padding: 28px 32px 36px;
  box-shadow: 0 30px 80px rgba(20,8,8,0.5);
}

body.gallery-modal-open { overflow: hidden; }

.gallery-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.gallery-back {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 9px 18px;
  font-size: 12px;
  letter-spacing: 0.05em;
  border-radius: 2px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.3s ease;
}

.gallery-back:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-soft);
}

.gallery-detail-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  margin: 0;
  text-align: right;
  color: var(--ink);
}

.gallery-hero {
  position: relative;
  width: 100%;
  background: var(--bg-soft);
  border-radius: 2px;
  margin-bottom: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.gallery-hero-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  cursor: zoom-in;
  transition: opacity 0.25s ease;
}
.gallery-hero-img:hover { opacity: 0.9; }

.gallery-hero-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(245,237,224,0.88);
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(20,8,8,0.18);
  transition: all 0.2s ease;
  padding: 0;
  z-index: 2;
}
.gallery-hero-nav:hover { background: var(--white); transform: translateY(-50%) scale(1.08); }
.gallery-hero-prev { left: 14px; }
.gallery-hero-next { right: 14px; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 110px;
  gap: 8px;
}

.g-item {
  overflow: hidden;
  cursor: pointer;
  position: relative;
  background: var(--bg-soft);
  border: 2px solid transparent;
  border-radius: 2px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.g-item:hover { transform: translateY(-2px); }
.g-item.is-active { border-color: var(--accent); }

.g-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.g-item:hover img { transform: scale(1.05); }
.g-item.g-hidden  { display: none; }
.g-item.g-tall    { grid-row: span 2; }

.gallery-empty {
  display: none;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  padding: 60px 20px;
  font-weight: 300;
}
.gallery-empty.visible { display: block; }

@media (max-width: 720px) {
  .gallery-hero-nav { width:40px; height:40px; font-size:24px; }
  .gallery-hero-prev { left:8px; }
  .gallery-hero-next { right:8px; }
  .gallery-categories { grid-template-columns: 1fr; gap: 14px; }
  .cat-card-name  { font-size: 22px; }
  .cat-card-overlay { padding: 20px 22px; }
  .gallery-detail-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .gallery-detail-title  { text-align: left; font-size: 20px; }
}

/* ============================================
   Reviews
   ============================================ */
.section-reviews { padding-bottom: 100px; }

.reviews-hint {
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-top: 24px;
  font-weight: 300;
}

.reviews-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  padding: 40px max(32px, calc((100vw - var(--max)) / 2 + 32px)) 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  -webkit-overflow-scrolling: touch;
  cursor: grab;
}
.reviews-track:active { cursor: grabbing; }
.reviews-track::-webkit-scrollbar { height: 6px; }
.reviews-track::-webkit-scrollbar-track { background: transparent; }
.reviews-track::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }

.reviews-carousel { position: relative; }
.review-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--accent);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transition: background 0.2s ease, color 0.2s ease;
}
.review-nav:hover { background: var(--accent); color: var(--white); }
.review-nav-prev { left: 16px; }
.review-nav-next { right: 16px; }
@media (max-width: 720px) {
  .review-nav { width: 38px; height: 38px; font-size: 18px; }
  .review-nav-prev { left: 4px; }
  .review-nav-next { right: 4px; }
}

.review-card {
  flex: 0 0 380px;
  scroll-snap-align: start;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.review-card:hover {
  box-shadow: 0 16px 32px rgba(139,37,53,0.07);
  transform: translateY(-2px);
}

.review-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.review-rating {
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 500;
}

.review-source {
  font-size: 11px;
  letter-spacing: 0.05em;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 2px;
}
.review-source-airbnb  { background: #fff0f0; color: #c43a4d; }
.review-source-booking { background: #eaf3ff; color: #1c5eb5; }

.review-meta {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
  font-weight: 400;
}

.review-text {
  font-size: 14px;
  font-weight: 300;
  color: var(--ink);
  line-height: 1.85;
  flex: 1;
}

.review-divider { height: 1px; background: var(--line); margin: 16px 0; }

.review-translation {
  font-size: 13px;
  font-weight: 300;
  color: var(--ink-soft);
  line-height: 1.85;
}

.review-translation-label {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 500;
  margin-right: 8px;
  padding: 2px 8px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  vertical-align: 1px;
}

@media (max-width: 720px) {
  .review-card   { flex: 0 0 86vw; padding: 24px 20px; }
  .reviews-track { padding: 32px 20px 24px; gap: 14px; }
}

/* ============================================
   Details
   ============================================ */
.section-details { background: var(--bg-soft); }

.spec-list {
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.spec-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  gap: 24px;
}

.spec-row dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
}

.spec-row dd {
  font-size: 15px;
  font-weight: 300;
  color: var(--ink);
}

/* ============================================
   Access
   ============================================ */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 56px;
  align-items: stretch;
}

.access-info { display: flex; flex-direction: column; }

.access-address-label {
  font-size: 13px;
  letter-spacing: 0.38em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.access-address {
  font-size: 21px;
  font-weight: 400;
  margin-bottom: 4px;
  font-family: var(--font-body);
}

.access-address-en {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 30px;
  letter-spacing: 0.02em;
}

.access-list {
  list-style: none;
  border-top: 1px solid var(--line);
}

.access-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.access-list li span  { color: var(--ink-soft); font-weight: 300; }
.access-list li strong { color: var(--ink); font-weight: 500; white-space: nowrap; padding-left: 14px; }

.access-subhead {
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}
.access-list + .access-subhead { margin-top: 28px; }

.access-map {
  min-height: 380px;
  background: var(--bg-soft);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
}
.access-map iframe { width: 100%; height: 100%; }

/* ============================================
   Booking
   ============================================ */
.section-book {
  background: var(--dark);
  color: var(--white);
  text-align: center;
}

.book-lead {
  font-size: 16px;
  font-weight: 300;
  color: rgba(255,255,255,0.72);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.9;
}

.book-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}

/* Airbnbのみの場合：中央寄せ */
.book-buttons.book-single {
  grid-template-columns: 1fr;
  max-width: 400px;
}

.book-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 28px 32px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.04);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.book-btn:hover {
  background: rgba(139,37,53,0.25);
  border-color: rgba(139,37,53,0.6);
  transform: translateY(-2px);
}

.book-btn-label {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: rgba(184,138,90,0.95);
  font-weight: 500;
  margin-bottom: 8px;
}

.book-btn-name {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 4px;
}

.book-btn-arrow {
  position: absolute;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition);
}
.book-btn:hover .book-btn-arrow {
  color: var(--white);
  transform: translateY(-50%) translateX(4px);
}

.book-rating {
  margin-top: 28px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.5);
  font-weight: 300;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #0e0808;
  color: rgba(255,255,255,0.55);
  padding: 60px 0 40px;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--white);
  margin-bottom: 12px;
}

.footer-kamon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  font-family: "Hiragino Mincho ProN", serif;
  font-size: 13px;
  color: var(--accent);
}

.footer-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

.footer-address {
  font-size: 13px;
  margin-bottom: 20px;
}

.footer-copy {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
}

/* ============================================
   Lightbox
   ============================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(14, 8, 8, 0.96);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox.active { display: flex; }

.lb-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

.lb-close, .lb-prev, .lb-next {
  position: absolute;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover {
  background: rgba(139,37,53,0.4);
  border-color: rgba(139,37,53,0.8);
}
.lb-close { top: 24px; right: 24px; }
.lb-prev  { left: 24px;  top: 50%; transform: translateY(-50%); }
.lb-next  { right: 24px; top: 50%; transform: translateY(-50%); }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid {
    grid-template-columns: repeat(5, 1fr);
    grid-auto-rows: 95px;
  }
  .access-grid { grid-template-columns: 1fr; gap: 40px; }
  .nav { display: none; }
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .header-inner { padding: 10px 20px; gap: 12px; }
  .brand-kamon { width: 36px; height: 36px; font-size: 13px; }
  .brand-logo { width: 38px; height: 38px; }
  .brand-text { display: none; }
  .lang-switcher button { padding: 5px 8px; font-size: 10px; }
  .section { padding: 80px 0; }
  .grid-4 { grid-template-columns: 1fr; }
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 75px;
    gap: 6px;
  }
  .g-item.g-tall { grid-row: span 1; }
  .spec-row { grid-template-columns: 1fr; gap: 6px; padding: 16px 0; }
  .book-buttons.book-single { max-width: 100%; }
  .hero { min-height: 540px; }
  .hero-title { font-size: 48px; }
  .book-btn { padding: 24px 28px; }
}