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

:root {
  --gold: #c9a84c;
  --gold-light: #e8d49e;
  --gold-dark: #8b6914;
  --black: #0a0a0a;
  --dark: #111111;
  --dark2: #1a1a1a;
  --dark3: #242424;
  --white: #faf8f3;
  --text-muted: rgba(250,248,243,0.55);
  --serif: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --sans: 'Noto Sans JP', sans-serif;
  --num: 'Noto Sans JP', 'Cormorant Garamond', sans-serif;
}

/* 数字を等高数字（Lining Figures）に強制 */
* { font-variant-numeric: lining-nums; font-feature-settings: "lnum" 1; }

html, body {
  overflow-x: hidden;
  max-width: 100vw;
}
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 300;
  width: 100%;
}

/* ===== HEADER ===== */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, transparent 100%);
  transition: background 0.4s;
}
header.scrolled {
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(201,168,76,0.2);
}
.logo-area img {
  height: 44px;
  filter: brightness(1.1);
}
nav { display: flex; gap: 32px; }
nav a {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--gold-light);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.3s;
}
nav a:hover { color: var(--gold); }
.header-reserve {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--black);
  background: var(--gold);
  padding: 10px 24px;
  text-decoration: none;
  text-transform: uppercase;
  transition: background 0.3s;
}
.header-reserve:hover { background: var(--gold-light); }

/* ===== HERO ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-swiper {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
.hero-swiper .swiper-slide {
  overflow: hidden;
}
.hero-swiper .swiper-slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 6s ease;
}
.hero-swiper .swiper-slide-active img {
  transform: scale(1.0);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0,0,0,0.72) 0%,
    rgba(0,0,0,0.4) 50%,
    rgba(10,8,0,0.65) 100%
  );
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 100px 24px 0;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-label {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-top: 80px; /* ナビゲーションバーの高さ分ずらす */
  margin-bottom: 28px;
  display: block;
  animation: fadeUp 1.2s ease 0.3s both;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(26px, 5vw, 3rem); /* 最大フォントサイズを3rem（約48px）程度に縮小 */
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 32px;
  animation: fadeUp 1.2s ease 0.6s both;
  overflow-wrap: anywhere;
  word-break: keep-all;
}
.hero-title em {
  font-style: italic;
  color: var(--gold-light);
}
.hero-divider {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 0 auto 28px;
  animation: fadeUp 1.2s ease 0.8s both;
}
.hero-sub {
  font-size: 14px;
  line-height: 2;
  letter-spacing: 0.08em;
  color: rgba(250,248,243,0.8);
  margin-bottom: 48px;
  animation: fadeUp 1.2s ease 1.0s both;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 16px 40px;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.4s;
  animation: fadeUp 1.2s ease 1.2s both;
}
.hero-cta:hover {
  background: var(--gold);
  color: var(--black);
}
.hero-cta::after {
  content: '→';
  transition: transform 0.3s;
}
.hero-cta:hover::after { transform: translateX(4px); }

.hero-scroll {
  position: relative; /* 絶対配置から相対配置へ変更 */
  bottom: auto;
  left: auto;
  transform: none;
  margin-top: 48px; /* 下部テキストやCTAボタンとの間に十分な余白を設定 */
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.6;
}
.hero-scroll span {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-light);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: top; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== SECTION COMMON ===== */
section { padding: 120px 0; }
.section-inner { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.section-label {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.4;
  margin-bottom: 24px;
}
.gold-line {
  width: 48px;
  height: 1px;
  background: var(--gold);
  margin-bottom: 40px;
}

/* ===== CONCEPT ===== */
.concept {
  background: var(--dark);
}
.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.concept-text p {
  font-size: 15px;
  line-height: 2.4;
  color: rgba(250,248,243,0.75);
  margin-bottom: 24px;
}
.concept-image {
  position: relative;
}
.concept-image img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.concept-image::before {
  content: '';
  position: absolute;
  top: -20px; left: -20px;
  right: 20px; bottom: 20px;
  border: 1px solid rgba(201,168,76,0.3);
  z-index: -1;
}
.concept-badges {
  display: flex;
  gap: 24px;
  margin-top: 40px;
}
.concept-badge {
  text-align: center;
}
.concept-badge .num {
  font-family: var(--num);
  font-size: 40px;
  font-weight: 400;
  color: var(--gold);
  line-height: 1;
  letter-spacing: -0.01em;
}
.concept-badge .unit {
  font-size: 12px;
  color: var(--gold-light);
}
.concept-badge .label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-top: 4px;
}
.badge-divider {
  width: 1px;
  background: rgba(201,168,76,0.3);
}

/* ===== MENU / PLAN ===== */
.menu { background: var(--dark2); }
.menu-header { text-align: center; margin-bottom: 72px; }
.menu-header .gold-line { margin: 0 auto 40px; }
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.plan-card {
  background: var(--dark3);
  padding: 48px 36px;
  border-top: 2px solid transparent;
  transition: border-color 0.4s, transform 0.4s;
  position: relative;
  overflow: hidden;
}
.plan-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}
.plan-card:hover { border-top-color: var(--gold); transform: translateY(-4px); }
.plan-card:hover::after { opacity: 1; }

/* コースカード画像の高さ・位置揃え用の共通定義 */
.plan-image-wrap {
  margin-top: 24px;
}
.plan-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* PCビュー（769px以上）のみ、カードをFlexbox化して画像を最下部に揃える */
@media (min-width: 769px) {
  .plan-card {
    display: flex;
    flex-direction: column;
  }
  .plan-image-wrap {
    margin-top: auto;
    padding-top: 24px; /* テキストとの間に適切なマージンを確保 */
  }
}

.plan-card.featured {
  background: linear-gradient(135deg, #1e1a0e 0%, #242015 100%);
  border-top-color: var(--gold);
}
.plan-card.featured::before {
  content: 'PREMIUM';
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--serif);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--black);
  background: var(--gold);
  padding: 4px 12px;
}
.plan-tag {
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}
.plan-name {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  line-height: 1.5;
}
.plan-condition {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.plan-price {
  font-family: var(--num);
  font-size: 36px;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.plan-price span { font-family: var(--sans); font-size: 13px; color: var(--text-muted); font-weight: 300; }
.plan-items {
  margin-top: 24px;
  list-style: none;
}
.plan-items li {
  font-size: 12px;
  color: rgba(250,248,243,0.65);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.plan-items li::before {
  content: '—';
  color: var(--gold);
  flex-shrink: 0;
}

/* ===== SEATS ===== */
.seats { background: var(--dark); }
.seats-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 64px;
}
.seat-block {
  background: var(--dark3);
  padding: 56px 48px;
}
.seat-type {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}
.seat-name {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 300;
  margin-bottom: 12px;
}
.seat-cap {
  font-family: var(--num);
  font-size: 52px;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
  letter-spacing: -0.02em;
}
.seat-cap sub {
  font-size: 18px;
  color: var(--text-muted);
  vertical-align: middle;
}
.seat-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 16px;
}
.seats-total {
  background: linear-gradient(135deg, rgba(201,168,76,0.12), rgba(201,168,76,0.04));
  border: 1px solid rgba(201,168,76,0.25);
  padding: 32px 48px;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.seats-total-text {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--gold-light);
}
.seats-total-num {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== GALLERY ===== */
.gallery { background: var(--dark2); padding: 80px 0; overflow: hidden; }
.gallery-label-wrap { text-align: center; margin-bottom: 48px; }
.gallery-swiper { overflow: hidden; }
.gallery-swiper .swiper-slide {
  width: 380px;
}
.gallery-swiper .swiper-slide img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}

/* ===== INFO ===== */
.info { background: var(--dark); }
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.info-table { border-collapse: collapse; width: 100%; }
.info-table tr { border-bottom: 1px solid rgba(255,255,255,0.06); }
.info-table th {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-align: left;
  padding: 16px 0;
  width: 130px;
  font-weight: 400;
  text-transform: uppercase;
}
.info-table td {
  font-size: 13px;
  color: rgba(250,248,243,0.75);
  padding: 16px 0;
  line-height: 1.7;
}
.map-area {
  background: var(--dark3);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.map-placeholder {
  text-align: center;
  color: var(--text-muted);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.2em;
}

/* ===== CAUTION / ACCORDION ===== */
.caution { background: var(--dark2); }
.accordion-item {
  border-bottom: 1px solid rgba(201,168,76,0.15);
}
.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--white);
}
.accordion-trigger-text {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.06em;
  text-align: left;
}
.accordion-icon {
  width: 24px;
  height: 24px;
  border: 1px solid rgba(201,168,76,0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 16px;
  flex-shrink: 0;
  transition: transform 0.3s;
}
.accordion-trigger.open .accordion-icon { transform: rotate(45deg); }
.accordion-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease, padding 0.3s;
}
.accordion-body.open { max-height: 400px; }
.accordion-body-inner {
  padding: 0 0 28px;
}
.accordion-body-inner p, .accordion-body-inner li {
  font-size: 13px;
  color: rgba(250,248,243,0.65);
  line-height: 2;
}
.accordion-body-inner ul { padding-left: 0; list-style: none; }
.accordion-body-inner li::before { content: '・'; color: var(--gold); }

/* ===== FOOTER ===== */
footer {
  background: var(--black);
  border-top: 1px solid rgba(201,168,76,0.15);
  padding: 64px 48px 32px;
  text-align: center;
}
.footer-logo img { height: 40px; margin-bottom: 24px; opacity: 0.8; }
.footer-address {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 40px;
}
.footer-tel {
  font-family: var(--num);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin-bottom: 8px;
}
.footer-hours {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  margin-bottom: 48px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ===== FLOATING CTA ===== */
.floating-cta {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 200;
  background: var(--gold);
  color: var(--black);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 40px rgba(201,168,76,0.35);
  transition: all 0.3s;
}
.floating-cta:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 50px rgba(201,168,76,0.45);
}
.floating-cta::before {
  content: 'RESERVE';
  font-size: 8px;
  display: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  header { padding: 20px 24px; }
  nav { display: none; }
  .hero-content { padding-top: 60px; }
  .section-inner { padding: 0 24px; overflow: hidden; }
  section { padding: 80px 0; }
  .concept-grid, .info-grid { grid-template-columns: 1fr; gap: 40px; }
  .plan-grid { grid-template-columns: 1fr; }
  .seats-layout { grid-template-columns: 1fr; }
  .floating-cta { bottom: 20px; right: 16px; padding: 14px 24px; font-size: 12px; max-width: calc(100vw - 32px); box-sizing: border-box; }
}

/* ===== SMARTPHONE RESPONSIVE (768px or less) ===== */
@media (max-width: 768px) {
  .hero-label {
    margin-top: 50px; /* スマホではナビの高さが低くなるため、余白を微調整 */
    margin-bottom: 20px;
  }
  .hero-title {
    font-size: 1.75rem !important; /* スマホ画面で綺麗に収まるサイズに制限 */
    line-height: 1.5;
    margin-bottom: 24px;
  }
  .hero-sub {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 32px;
  }
  .hero-scroll {
    margin-top: 32px; /* スマホでは余白を少し小さく調整 */
  }
}