/* ============================================================
   Luxia — Shisha Lounge Shinsaibashi
   黒大理石 × ゴールド × セリフ体（Instagram の世界観を踏襲）
   ============================================================ */

:root {
  --bg: #0b0b0d;
  --bg-2: #121215;
  --bg-3: #1a1a1f;
  --ink: #ece7dc;
  --ink-2: #b9b2a4;
  --ink-3: #8b8579;
  --gold: #c9a45c;
  --gold-2: #e6cf95;
  --gold-3: #8d6f34;
  --line: rgba(201, 164, 92, 0.22);
  --line-2: rgba(236, 231, 220, 0.08);
  --serif-en: "Cormorant Garamond", "Times New Roman", serif;
  --serif-jp: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --max: 1120px;
  --max-narrow: 760px;
  --pad: clamp(20px, 5vw, 48px);
  --header-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif-jp);
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 500; }
dl, dt, dd, ul { margin: 0; padding: 0; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- marble texture ---------- */
.marble {
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 60% 40% at 20% 30%, rgba(255,255,255,0.05), transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 70%, rgba(255,255,255,0.04), transparent 60%),
    radial-gradient(ellipse 30% 30% at 60% 20%, rgba(201,164,92,0.05), transparent 60%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='600' height='600'><filter id='n'><feTurbulence type='fractalNoise' stitchTiles='stitch' baseFrequency='0.004 0.012' numOctaves='4' seed='7'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.16 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-blend-mode: screen;
}

/* ---------- a11y ---------- */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px;
  background: var(--gold); color: #17120a; border-radius: 2px; font-size: 0.9rem;
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--gold-2); outline-offset: 3px; }
.btn:focus-visible { outline-offset: 4px; }

/* ---------- layout ---------- */
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }
.container.narrow { max-width: var(--max-narrow); }
.section { padding: clamp(72px, 12vw, 140px) 0; position: relative; }
.section + .section::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(240px, 50%); height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-3), transparent);
}
.section-head { text-align: center; margin-bottom: clamp(40px, 6vw, 72px); }
.eyebrow {
  font-family: var(--serif-en); font-style: italic; font-weight: 400;
  color: var(--gold); letter-spacing: 0.18em; font-size: 1.05rem; margin-bottom: 14px;
}
.heading {
  font-size: clamp(1.5rem, 3.4vw, 2.2rem); line-height: 1.6; letter-spacing: 0.08em;
  color: var(--ink);
}
.sub { color: var(--ink-2); margin-top: 16px; font-size: 0.95rem; }
.lead { font-size: 1.02rem; color: var(--ink-2); line-height: 2.3; }
.sp { display: none; }
@media (max-width: 640px) {
  .sp { display: inline; } .pc { display: none; }
  .lead br { display: none; }
  .lead { text-align: left; }
  .hero-sub { font-size: 0.85rem; letter-spacing: 0.04em; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 52px; padding: 12px 30px;
  font-family: var(--serif-jp); font-size: 0.95rem; letter-spacing: 0.14em;
  border: 1px solid var(--gold); border-radius: 2px;
  transition: background .3s, color .3s, border-color .3s, transform .3s;
}
.btn-gold { background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, var(--gold-3)); color: #17120a; border-color: transparent; }
.btn-gold:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn-ghost { color: var(--gold-2); background: rgba(201,164,92,0.04); }
.btn-ghost:hover { background: rgba(201,164,92,0.12); }
.btn-lg { min-height: 72px; padding: 14px 40px; min-width: 260px; }
.btn-label { font-size: 1.05rem; }
.btn-sub { font-size: 0.72rem; letter-spacing: 0.1em; opacity: 0.8; margin-top: 2px; }

/* ---------- header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--pad);
  background: linear-gradient(180deg, rgba(11,11,13,0.85), rgba(11,11,13,0));
  transition: background .4s, backdrop-filter .4s;
}
.site-header.scrolled { background: rgba(11,11,13,0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-2); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark, .hero-mark {
  font-family: var(--serif-en); font-style: italic; font-weight: 300;
  color: var(--gold-2); line-height: 1;
}
.brand-mark { font-size: 1.7rem; }
.brand-name { font-family: var(--serif-en); font-size: 1.35rem; letter-spacing: 0.22em; color: var(--ink); }
.nav { display: flex; align-items: center; gap: clamp(14px, 2.2vw, 30px); }
.nav a { font-family: var(--serif-en); font-size: 1rem; letter-spacing: 0.14em; color: var(--ink-2); transition: color .3s; }
.nav a:hover { color: var(--gold-2); }
.nav .nav-cta { font-family: var(--serif-jp); font-size: 0.82rem; padding: 8px 16px; border: 1px solid var(--gold); color: var(--gold-2); border-radius: 2px; }
.nav-toggle { display: none; width: 44px; height: 44px; position: relative; }
.nav-toggle span { position: absolute; left: 10px; right: 10px; height: 1px; background: var(--gold-2); transition: transform .3s, top .3s; }
.nav-toggle span:nth-child(1) { top: 17px; } .nav-toggle span:nth-child(2) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 22px; transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: var(--header-h) 0 0 0; z-index: 40;
    flex-direction: column; justify-content: center; gap: 28px;
    background: rgba(11,11,13,0.96); backdrop-filter: blur(12px);
    opacity: 0; visibility: hidden; pointer-events: none; overflow-y: auto; padding: 24px 0;
    transition: opacity .3s, visibility 0s linear .3s;
  }
  .nav.open { opacity: 1; visibility: visible; pointer-events: auto; transition: opacity .3s, visibility 0s; }
  .nav a { font-size: 1.3rem; }
  .nav .nav-cta { font-size: 0.95rem; padding: 12px 28px; margin-top: 12px; }
}

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: grid; place-items: center;
  text-align: center; padding: calc(var(--header-h) + 40px) var(--pad) 80px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 70% 50% at 50% 20%, rgba(201,164,92,0.10), transparent 65%),
    radial-gradient(ellipse 60% 45% at 15% 80%, rgba(255,255,255,0.05), transparent 60%),
    radial-gradient(ellipse 50% 45% at 85% 60%, rgba(255,255,255,0.04), transparent 60%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='900' height='900'><filter id='n'><feTurbulence type='fractalNoise' stitchTiles='stitch' baseFrequency='0.003 0.009' numOctaves='5' seed='3'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.20 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-blend-mode: screen;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,11,13,0.2) 0%, rgba(11,11,13,0) 40%, rgba(11,11,13,0.9) 100%);
}
.hero-inner { position: relative; z-index: 1; max-width: 780px; }
.hero-kicker { font-family: var(--serif-en); font-style: italic; color: var(--gold); letter-spacing: 0.3em; font-size: 0.95rem; }
.hero-logo { display: flex; flex-direction: column; align-items: center; margin: 18px 0 26px; }
.hero-mark { font-size: clamp(4rem, 12vw, 7.5rem); margin-bottom: -0.25em;
  background: linear-gradient(180deg, var(--gold-2), var(--gold) 60%, var(--gold-3));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-name { font-family: var(--serif-en); font-weight: 300; font-size: clamp(2.6rem, 8vw, 5rem); letter-spacing: 0.3em; padding-left: 0.3em; color: var(--ink); }
.hero-copy { font-size: clamp(1.25rem, 3.2vw, 1.75rem); letter-spacing: 0.32em; padding-left: 0.32em; color: var(--ink); }
.hero-sub { margin-top: 10px; color: var(--ink-2); font-size: 0.95rem; letter-spacing: 0.12em; }
.hero-facts {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 40px;
  margin: 40px auto 0; padding-top: 28px; border-top: 1px solid var(--line);
  max-width: 640px;
}
.hero-facts dt { font-family: var(--serif-en); font-size: 0.78rem; letter-spacing: 0.26em; color: var(--gold); }
.hero-facts dd { font-size: 0.95rem; color: var(--ink); }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-rating { display: inline-flex; align-items: center; gap: 10px; margin-top: 30px; font-size: 0.85rem; color: var(--ink-2); letter-spacing: 0.08em; }
.hero-rating .arrow { color: var(--gold); font-family: var(--serif-en); transition: transform .3s; }
.hero-rating:hover .arrow { transform: translateX(4px); }
.hero-rating:hover { color: var(--gold-2); }
.hero-scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); width: 44px; height: 56px; overflow: hidden; z-index: 1; display: flex; justify-content: center; }
.hero-scroll span { display: block; width: 1px; height: 100%; background: linear-gradient(180deg, transparent, var(--gold)); animation: drop 2.2s ease-in-out infinite; }
@keyframes drop { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }

/* ---------- concept ---------- */
.concept { text-align: center; }
.concept .heading { margin-bottom: 32px; }
.concept-points {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  margin-top: 48px; background: var(--line-2); border: 1px solid var(--line-2);
}
.concept-points li { background: var(--bg); padding: 22px 18px; font-size: 0.9rem; color: var(--ink-2); line-height: 1.8; }
.concept-points li span { display: block; color: var(--gold-2); font-size: 1rem; letter-spacing: 0.14em; margin-bottom: 4px; }
@media (min-width: 720px) { .concept-points { grid-template-columns: repeat(4, 1fr); } }

/* ---------- rooms ---------- */
.rooms { background: var(--bg-2); }
.room-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 820px) { .room-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; } }
.room { border: 1px solid var(--line-2); background: var(--bg); }
.room-photo { aspect-ratio: 4 / 5; }
.room-body { padding: 26px 24px 30px; }
.room-type { font-family: var(--serif-en); font-style: italic; color: var(--gold); letter-spacing: 0.16em; font-size: 0.95rem; }
.room-name { font-family: var(--serif-en); font-size: 2rem; font-weight: 400; letter-spacing: 0.1em; line-height: 1.2; margin: 6px 0 14px; }
.room-name span { font-family: var(--serif-jp); font-size: 0.95rem; color: var(--ink-2); letter-spacing: 0.3em; margin-left: 10px; }
.room-desc { font-size: 0.9rem; color: var(--ink-2); line-height: 2; }
.room-spec { margin-top: 18px; border-top: 1px solid var(--line-2); padding-top: 14px; display: grid; gap: 6px; }
.room-spec div { display: grid; grid-template-columns: 5.5em 1fr; font-size: 0.85rem; }
.room-spec dt { color: var(--gold); letter-spacing: 0.1em; }
.room-spec dd { color: var(--ink-2); }
.room-note { text-align: center; margin-top: 40px; color: var(--ink-3); font-size: 0.85rem; letter-spacing: 0.1em; }

/* ---------- placeholder photo ---------- */
.ph {
  position: relative; overflow: hidden;
  background-color: var(--bg-3);
  background-image:
    radial-gradient(ellipse 60% 50% at 30% 30%, rgba(255,255,255,0.06), transparent 60%),
    radial-gradient(ellipse 50% 60% at 75% 75%, rgba(201,164,92,0.06), transparent 60%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='500' height='500'><filter id='n'><feTurbulence type='fractalNoise' stitchTiles='stitch' baseFrequency='0.005 0.014' numOctaves='4' seed='11'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.18 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-blend-mode: screen;
}
.ph::after {
  content: attr(data-label);
  position: absolute; inset: auto 0 0 0; padding: 10px 14px;
  font-family: var(--serif-jp); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--ink-3);
  background: linear-gradient(180deg, transparent, rgba(11,11,13,0.7));
}
.ph::before {
  content: ""; position: absolute; inset: 14px; border: 1px solid var(--line);
}
/* 本番写真を入れたら <img> を中に置き、.ph を外す（README 参照） */
.ph img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* ---------- system ---------- */
.price-table { border-top: 1px solid var(--line); }
.price-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 20px;
  padding: 20px 6px; border-bottom: 1px solid var(--line-2);
}
.price-name { font-size: 1rem; letter-spacing: 0.1em; flex: 1 1 auto; min-width: 8em; }
.price-name small { display: block; font-size: 0.75rem; color: var(--ink-3); letter-spacing: 0.08em; margin-top: 2px; }
.price-val { font-family: var(--serif-en); font-size: 1.5rem; color: var(--gold-2); white-space: nowrap; flex: 0 0 auto; }
@media (max-width: 640px) { .price-val { font-size: 1.2rem; } }
.system-notes { margin-top: 32px; display: grid; gap: 8px; font-size: 0.88rem; color: var(--ink-2); }
.system-notes li { padding-left: 1.2em; position: relative; }
.system-notes li::before { content: "—"; position: absolute; left: 0; color: var(--gold-3); }

/* ---------- menu ---------- */
.menu { background: var(--bg-2); }
.menu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 640px) { .menu-grid { grid-template-columns: 1fr; gap: 24px; } }
.menu-item { border: 1px solid var(--line-2); background: var(--bg); }
.menu-photo { aspect-ratio: 1 / 1; }
.menu-body { padding: 18px 20px 20px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.menu-body h3 { font-size: 1rem; font-weight: 500; letter-spacing: 0.1em; }
.menu-body h3 .en { display: block; font-family: var(--serif-en); font-style: italic; font-weight: 400; font-size: 0.85rem; color: var(--ink-3); letter-spacing: 0.08em; }
.menu-body .price { font-family: var(--serif-en); font-size: 1.25rem; color: var(--gold-2); white-space: nowrap; }
.menu-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 44px; }

/* ---------- faq ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line-2); }
.faq-list summary {
  list-style: none; cursor: pointer; padding: 20px 44px 20px 6px; position: relative;
  font-size: 0.98rem; letter-spacing: 0.06em; transition: color .3s;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  font-family: var(--serif-en); font-size: 1.5rem; color: var(--gold); transition: transform .3s;
}
.faq-list details[open] summary { color: var(--gold-2); }
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list details p { padding: 0 6px 22px; font-size: 0.9rem; color: var(--ink-2); line-height: 2; }

/* ---------- access ---------- */
.access { background: var(--bg-2); }
.access-grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 900px) { .access-grid { grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; } }
.access-info dl { display: grid; gap: 14px; border-top: 1px solid var(--line); padding-top: 22px; margin-bottom: 28px; }
.access-info dl div { display: grid; grid-template-columns: 6em 1fr; gap: 12px; font-size: 0.92rem; padding-bottom: 14px; border-bottom: 1px solid var(--line-2); }
.access-info dt { color: var(--gold); letter-spacing: 0.14em; }
.access-info dd { color: var(--ink-2); line-height: 1.9; }
.access-info dd a { color: var(--ink); border-bottom: 1px solid var(--gold-3); }
.access-map { border: 1px solid var(--line-2); aspect-ratio: 4 / 3; background: var(--bg-3); }
.access-map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(1) invert(0.92) contrast(0.9) brightness(0.9); }

/* ---------- reserve ---------- */
.reserve { text-align: center; overflow: hidden; }
.reserve .heading { font-size: clamp(1.35rem, 3vw, 1.9rem); }
.reserve-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(201,164,92,0.14), transparent 65%),
    radial-gradient(ellipse 60% 40% at 20% 20%, rgba(255,255,255,0.04), transparent 60%);
}
.reserve .container { position: relative; z-index: 1; }
.reserve-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 44px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line-2); padding: 48px 0 32px; text-align: center; color: var(--ink-3); font-size: 0.8rem; letter-spacing: 0.08em; }
.footer-brand { font-family: var(--serif-en); font-size: 1.4rem; letter-spacing: 0.2em; color: var(--ink); display: flex; align-items: center; justify-content: center; gap: 8px; }
.footer-brand small { font-style: italic; font-size: 0.8rem; color: var(--gold); letter-spacing: 0.14em; margin-left: 6px; }
.footer-addr { margin-top: 14px; }
.footer-links { margin-top: 18px; display: flex; justify-content: center; flex-wrap: wrap; gap: 12px 22px; }
.footer-links a { font-family: var(--serif-en); font-size: 0.95rem; letter-spacing: 0.14em; color: var(--ink-2); }
.footer-links a:hover { color: var(--gold-2); }
.footer-note { margin-top: 18px; }
.copyright { margin-top: 24px; font-family: var(--serif-en); letter-spacing: 0.16em; }

/* ---------- reveal ---------- */
/* JS 有効時のみ非表示から始める（無効時はそのまま見える） */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .9s ease, transform .9s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll span { animation: none; }
  html { scroll-behavior: auto; }
  .btn, .nav a, .nav, .nav-toggle span, .hero-rating .arrow, .faq-list summary, .faq-list summary::after, .site-header { transition: none; }
  .btn:hover { transform: none; }
}

/* ---------- TODO マーカー（公開前に body.draft を外す） ---------- */
body.draft [data-todo] { outline: 1px dashed rgba(230, 120, 120, 0.7); outline-offset: 3px; }
body.draft [data-todo]::after {
  content: " 要確認"; font-size: 0.65rem; color: #e07878; letter-spacing: 0.1em; vertical-align: super;
}

/* ---------- 撮影用 static モード ---------- */
body.static .reveal, .js body.static .reveal { opacity: 1; transform: none; transition: none; }
body.static .hero { min-height: 900px; }
body.static .hero-scroll span { animation: none; }