/* ==========================================
   Variables & Reset (Theme: Chic & Dark Gold)
========================================== */
:root {
  --gold: #d4af37;
  --gold-light: #f3e5ab;
  --gold-dark: #aa820a;
  --bg-main: #0c0d0e;
  --bg-card: #141618;
  --bg-elevated: #1c1e22;
  --border: rgba(212, 175, 55, 0.2);
  --border-light: rgba(255, 255, 255, 0.08);
  --text-main: #f5f5f7;
  --text-muted: #9ba1a6;
  --radius: 12px;
  --radius-lg: 20px;
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.8;
  letter-spacing: 0.03em;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 64px 0; }

.section-badge {
  font-family: 'Cinzel', serif;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-align: center;
  margin-bottom: 8px;
}

.section-heading {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.45rem;
  font-weight: 700;
  text-align: center;
  color: #fff;
  margin-bottom: 36px;
  line-height: 1.4;
}

/* ==========================================
   Buttons
========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  text-align: center;
}

.btn-gold {
  background: linear-gradient(135deg, #e6c86e 0%, #c99e28 100%);
  color: #0c0d0e;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.35);
  font-weight: 700;
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(212, 175, 55, 0.5); }

.btn-hero {
  width: 100%;
  padding: 18px;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.btn-cta {
  width: 100%;
  padding: 18px;
  font-size: 1.05rem;
  margin: 20px 0 12px;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(212, 175, 55, 0.35); }
  50% { box-shadow: 0 8px 30px rgba(212, 175, 55, 0.65); transform: scale(1.01); }
}
.pulse { animation: pulse 2.8s ease-in-out infinite; }

/* ==========================================
   Header
========================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(12, 13, 14, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: #fff;
}

.tag-limited {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 9999px;
}

/* ==========================================
   Hero
========================================== */
.hero {
  position: relative;
  padding: 64px 0 72px;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(212, 175, 55, 0.12) 0%, transparent 65%);
  border-bottom: 1px solid var(--border-light);
}

.hero-subtag {
  font-family: 'Cinzel', serif;
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 18px;
}

.hero-title {
  margin-bottom: 24px;
}

.en-title {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 6px;
}

.jp-title {
  display: block;
  font-family: 'Noto Serif JP', serif;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--gold-light);
  letter-spacing: 0.1em;
}

.hero-lead {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 32px;
}

.hero-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 8px;
  margin-bottom: 28px;
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.spec-label {
  font-family: 'Cinzel', serif;
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.15em;
}

.spec-val {
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
}

.hero-notice {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* ==========================================
   Features
========================================== */
.concept-section {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
}

.feature-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card {
  display: flex;
  gap: 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.card-num {
  font-family: 'Cinzel', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold);
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.card-body h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.02rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ==========================================
   Details
========================================== */
.detail-section {
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-light);
}

.info-table {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.info-row {
  display: flex;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.88rem;
}

.info-row:last-child { border-bottom: none; }

.info-label {
  width: 90px;
  flex-shrink: 0;
  font-weight: 700;
  color: var(--gold);
  font-size: 0.82rem;
}

.info-val {
  color: var(--text-main);
  line-height: 1.7;
}

.info-val strong { color: #fff; }
.sub-text { font-size: 0.78rem; color: var(--text-muted); }
.price-val { font-family: 'Cinzel', serif; font-size: 1.4rem; font-weight: 700; color: var(--gold-light); }
.price-tax { font-size: 0.8rem; color: var(--text-muted); margin-left: 4px; }

/* ==========================================
   Reservation CTA
========================================== */
.reserve-section {
  background: radial-gradient(circle at center, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
}

.reserve-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  text-align: center;
}

.reserve-badge {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 10px;
}

.reserve-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.reserve-lead {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.reserve-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================
   Footer
========================================== */
.footer {
  background: #080809;
  border-top: 1px solid var(--border-light);
  padding: 32px 0;
  text-align: center;
}

.footer-brand {
  font-family: 'Cinzel', serif;
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.footer-copy {
  font-size: 0.72rem;
  color: #555;
}

/* ==========================================
   自動終了オーバーレイ
========================================== */
.expired-overlay {
  position: fixed;
  inset: 0;
  background: rgba(12, 13, 14, 0.96);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.expired-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  max-width: 420px;
}

.expired-icon { font-size: 3rem; margin-bottom: 16px; }
.expired-card h2 { font-family: 'Noto Serif JP', serif; font-size: 1.3rem; margin-bottom: 12px; color: #fff; }
.expired-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 24px; }
.btn-expired {
  display: inline-block;
  background: var(--gold);
  color: #0c0d0e;
  padding: 12px 24px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
}