:root {
  --bg: #14100c;
  --bg2: #1d1813;
  --gold: #d4af6a;
  --gold-soft: #e8d6a8;
  --text: #f2ece0;
  --muted: #b6ab97;
  --line: rgba(212, 175, 106, 0.25);
}

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

body {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }

/* ---- Header ---- */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 16, 12, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { color: var(--gold); font-size: 1.2rem; letter-spacing: 0.15em; }
.nav ul { display: flex; gap: 22px; list-style: none; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.85rem; transition: color .2s; }
.nav a:hover { color: var(--gold-soft); }

/* hamburger (mobile menu button) */
.menu-btn {
  display: none; background: none; border: 0; cursor: pointer;
  width: 44px; height: 44px; padding: 10px; -webkit-tap-highlight-color: transparent;
}
.menu-btn span {
  display: block; height: 2px; background: var(--gold); border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.menu-btn span + span { margin-top: 6px; }
.menu-btn.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 640px) {
  .menu-btn { display: block; }
  .nav ul {
    position: fixed; inset: 64px 0 auto 0;
    flex-direction: column; gap: 0;
    background: rgba(20, 16, 12, 0.97);
    border-bottom: 1px solid var(--line);
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease;
  }
  .nav ul.open { max-height: 340px; }
  .nav ul li { border-top: 1px solid var(--line); }
  .nav ul a { display: block; padding: 16px 24px; font-size: 1rem; }
}

/* ---- Hero ---- */
.hero {
  position: relative; height: 78vh; min-height: 460px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: linear-gradient(rgba(10,8,5,0.55), rgba(10,8,5,0.75)),
              url("../img/top.png") center/cover;
}
.hero .en { color: var(--gold); letter-spacing: 0.5em; font-size: 0.8rem; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.2rem, 7vw, 4rem); letter-spacing: 0.12em; font-weight: 400; }
.hero .sub { color: var(--gold-soft); margin-top: 18px; font-size: 1rem; }

/* ---- Reservation notice (distinctive banner) ---- */
.reserve {
  background: var(--gold);
  color: #1a140d;
  text-align: center;
  padding: 22px 20px;
}
.reserve p { margin: 0; font-size: 1.05rem; font-weight: 700; letter-spacing: 0.06em; }
.reserve .lead { font-size: 0.85rem; font-weight: 400; letter-spacing: 0.15em; margin-bottom: 6px; }
.reserve a {
  display: inline-block; margin-top: 12px; padding: 10px 26px;
  background: #1a140d; color: var(--gold-soft); text-decoration: none;
  border-radius: 999px; font-size: 1.05rem; letter-spacing: 0.08em; min-height: 44px;
}
.reserve a:hover { background: #000; }

/* ---- Section base ---- */
section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title .en { display: block; color: var(--gold); letter-spacing: 0.4em; font-size: 0.75rem; margin-bottom: 10px; }
.section-title h2 { font-size: 1.8rem; font-weight: 400; letter-spacing: 0.1em; }
.alt { background: var(--bg2); }

/* ---- Concept ---- */
.concept p { text-align: center; max-width: 640px; margin: 0 auto; color: var(--muted); }

/* ---- System / Price ---- */
.price-list { max-width: 560px; margin: 0 auto; }
.price-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 16px 4px; border-bottom: 1px dashed var(--line);
}
.price-row .label { color: var(--text); }
.price-row .val { color: var(--gold-soft); white-space: nowrap; }
.price-note { text-align: center; color: var(--muted); font-size: 0.8rem; margin-top: 20px; }

/* ---- Gallery ---- */
.gallery {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.gallery div { aspect-ratio: 4/3; border-radius: 6px; overflow: hidden; }

/* ---- Access ---- */
.access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 720px) { .access-grid { grid-template-columns: 1fr; } }
.info-row { display: flex; padding: 12px 0; border-bottom: 1px solid var(--line); }
.info-row dt { width: 110px; color: var(--gold); font-size: 0.85rem; flex-shrink: 0; }
.info-row dd { color: var(--muted); }
.info-row dd a { color: var(--gold-soft); text-decoration: none; }
.map-embed {
  aspect-ratio: 4/3; border-radius: 6px; overflow: hidden; border: 1px solid var(--line);
}
.map-embed iframe { width: 100%; height: 100%; border: 0; }

/* ---- Share buttons ---- */
.share {
  text-align: center; padding: 48px 20px;
  border-top: 1px solid var(--line);
}
.share p { color: var(--muted); font-size: 0.8rem; letter-spacing: 0.2em; margin-bottom: 18px; }
.share-btns { display: flex; justify-content: center; gap: 16px; }
.share-btns a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 50%;
  color: #fff; text-decoration: none; transition: transform .2s, opacity .2s;
  -webkit-tap-highlight-color: transparent;
}
.share-btns a:hover { transform: translateY(-3px); opacity: 0.9; }
.share-btns .fb { background: #1877f2; }
.share-btns .tw { background: #000; }
.share-btns svg { width: 24px; height: 24px; fill: currentColor; }

/* ---- Footer ---- */
footer { background: #0d0a07; text-align: center; padding: 40px 0 96px; color: var(--muted); font-size: 0.8rem; }
footer .brand { display: block; margin-bottom: 12px; }

/* ---- Fixed action bar (mobile) ---- */
.action-bar { display: none; }
@media (max-width: 640px) {
  .action-bar {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60;
    border-top: 1px solid var(--line);
  }
  .action-bar a {
    flex: 1; text-align: center; padding: 16px 0; font-size: 0.95rem;
    text-decoration: none; letter-spacing: 0.1em; min-height: 56px;
    display: flex; align-items: center; justify-content: center;
  }
  .action-bar .call { background: var(--gold); color: #1a140d; font-weight: 700; }
  .action-bar .map  { background: var(--bg2); color: var(--gold-soft); }
}

/* ---- Mobile spacing & layout ---- */
@media (max-width: 640px) {
  body { line-height: 1.7; }
  .hero { height: 70vh; min-height: 400px; }
  section { padding: 56px 0; }
  .section-title { margin-bottom: 32px; }
  .gallery { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .info-row dt { width: 84px; font-size: 0.8rem; }
}