/* 006 湯宿 月白 ― 色はここだけ触れば差し替わる */
:root {
  --c-bg: #f5f1ea;
  --c-dark: #1c1a17;
  --c-main: #2f2b25;
  --c-accent: #a88a5c;
  --c-accent-text: #7a5f38;
  --c-text: #374151;
  --c-sub: #4b5563;
  --c-line: #e2d9cb;
  --font: "Noto Sans JP", sans-serif;
  --font-ja: "Shippori Mincho B1", serif;
  --font-en: "Marcellus", serif;
  --ease: cubic-bezier(.65, 0, .35, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 2; letter-spacing: .04em; color: var(--c-text); background: var(--c-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; font-weight: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dd, li { word-break: auto-phrase; }

/* 縦書きの見出し */
.vtitle { writing-mode: vertical-rl; font-family: var(--font-ja); font-weight: 700; font-size: clamp(28px, 4vw, 44px); line-height: 1.7; letter-spacing: .14em; color: var(--c-main); }
.vtitle--light { color: #fff; }
.en-label { font-family: var(--font-en); font-size: 16px; letter-spacing: .3em; text-transform: uppercase; color: var(--c-accent-text); margin-bottom: 16px; }
.en-label--light { color: var(--c-accent); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 28px; text-decoration: none; letter-spacing: .14em; transition: background-color .4s, color .4s; white-space: nowrap; }
.btn--gold { background: var(--c-accent); color: var(--c-dark); }
.btn--gold:hover { background: #c4a678; }
.btn--line { border: 1px solid currentColor; }
.btn--lg { min-height: 64px; padding: 0 48px; font-size: 17px; }

/* ヘッダー（最初は墨色の画面の上。スクロールで和紙色に） */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; color: #fff; transition: background-color .5s, color .5s; }
.header.is-scrolled { background: rgba(245, 241, 234, .95); color: var(--c-main); }
.header__inner { display: flex; align-items: center; gap: 24px; height: 72px; padding: 0 20px; max-width: 1440px; margin: 0 auto; }
.logo { display: flex; align-items: baseline; gap: 12px; text-decoration: none; min-height: 48px; align-items: center; }
.logo__ja { font-family: var(--font-ja); font-weight: 700; font-size: 21px; letter-spacing: .2em; }
.logo__en { font-family: var(--font-en); font-size: 15px; letter-spacing: .3em; }
.logo, .logo__ja { white-space: nowrap; flex: none; }
@media (max-width: 599px) { .logo__en { display: none; } .logo__ja { font-size: 19px; letter-spacing: .14em; } }
.gnav { display: none; }
.header__btn { margin-left: auto; flex: none; }
@media (min-width: 1080px) {
  .header__inner { height: 88px; padding: 0 48px; }
  .gnav { display: flex; gap: 32px; margin-left: auto; }
  .gnav a { display: flex; align-items: center; min-height: 44px; text-decoration: none; font-size: 15px; letter-spacing: .14em; }
  .header__btn { margin-left: 0; }
}

/* スマホのメニュー（JSが無くても開閉できる details 要素） */
.spmenu { flex: none; }
.spmenu summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; padding: 0 10px; }
.spmenu summary::-webkit-details-marker { display: none; }
.spmenu__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.spmenu__bar, .spmenu__bar::before, .spmenu__bar::after { display: block; width: 20px; height: 1.5px; background: currentColor; position: relative; }
.spmenu__bar::before, .spmenu__bar::after { content: ""; position: absolute; left: 0; }
.spmenu__bar::before { top: -7px; } .spmenu__bar::after { top: 7px; }
.spmenu[open] .spmenu__bar { background: transparent; }
.spmenu[open] .spmenu__bar::before { top: 0; transform: rotate(45deg); }
.spmenu[open] .spmenu__bar::after { top: 0; transform: rotate(-45deg); }
.spmenu__nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--c-bg); padding: 8px 20px 24px; display: flex; flex-direction: column; box-shadow: 0 16px 32px rgba(0, 0, 0, .15); }
.spmenu__nav a { display: flex; align-items: center; min-height: 52px; color: var(--c-main); text-decoration: none; font-family: var(--font-ja); border-bottom: 1px solid var(--c-line); }
@media (min-width: 1080px) { .spmenu { display: none; } }

/* ===== 演出①：メインビジュアル ===== */
.hero { background: var(--c-dark); }
.hero__stage { position: relative; height: 100vh; min-height: 560px; overflow: hidden; }
.hero__window { position: absolute; inset: 0; }
.hero__window img { width: 100%; height: 100%; object-fit: cover; }
.hero__window::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20, 18, 15, 0) 40%, rgba(20, 18, 15, .55) 100%); }
.hero__title {
  position: absolute; z-index: 2; top: 50%; right: max(24px, 8vw); transform: translateY(-50%);
  writing-mode: vertical-rl; font-family: var(--font-ja); font-weight: 500; color: #fff;
  font-size: clamp(30px, 4.6vw, 60px); line-height: 1.9; letter-spacing: .2em; text-shadow: 0 2px 20px rgba(0, 0, 0, .35);
}
.hero__title span { display: block; }
.hero__title span + span { margin-top: 3em; }
.hero__intro { display: none; }
.hero__scroll { position: absolute; z-index: 2; left: 50%; bottom: 24px; transform: translateX(-50%); font-family: var(--font-en); font-size: 15px; letter-spacing: .3em; color: #fff; }
.hero__scroll::after { content: ""; display: block; width: 1px; height: 40px; margin: 8px auto 0; background: linear-gradient(#fff, transparent); }
/* 動く版：最初は小さな丸窓（JSが付ける .is-motion のときだけ） */
.is-motion .hero__intro {
  display: block; position: absolute; z-index: 1; left: 50%; top: calc(50% + 26vmin + 32px); transform: translateX(-50%);
  font-family: var(--font-ja); font-size: 17px; letter-spacing: .4em; color: #e9e1d3; white-space: nowrap;
}

/* ===== ごあいさつ（写真が次の区切りにはみ出して重なる） ===== */
.about { position: relative; z-index: 2; padding: 112px 20px 0; }
.about__inner { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr; gap: 24px 32px; }
.about__body p + p { margin-top: 20px; }
.about__photo { grid-column: 1 / -1; margin: 48px 0 -96px; overflow: hidden; }
.about__photo img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
@media (min-width: 900px) {
  .about { padding-top: 160px; }
  .about__inner { grid-template-columns: auto minmax(0, 420px) 1fr; gap: 64px; align-items: start; }
  .about__body { padding-top: 80px; }
  .about__photo { grid-column: 3; margin: 0 -48px -200px 0; }
  .about__photo img { aspect-ratio: 4 / 5; }
}

/* ===== 演出②：月白の一日 ===== */
.day { background: var(--c-dark); color: #e9e1d3; padding-top: 96px; }
.scene { position: relative; min-height: 90vh; display: grid; align-items: end; overflow: hidden; }
.scene img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.scene::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20, 18, 15, .1) 30%, rgba(20, 18, 15, .78) 100%); }
.scene__text { position: relative; z-index: 1; padding: 48px 20px; display: grid; grid-template-columns: auto 1fr; gap: 8px 28px; align-items: end; max-width: 760px; }
.scene__time { grid-column: 1 / -1; font-family: var(--font-en); font-size: 18px; letter-spacing: .3em; color: var(--c-accent); }
.scene__time span { font-family: var(--font-ja); margin-left: 16px; letter-spacing: .1em; }
.scene__text .vtitle { grid-row: 2; font-size: clamp(26px, 3.6vw, 40px); }
.scene__text p:last-child { grid-row: 2; font-size: 16px; color: #f2ece2; max-width: 22em; }
.day__meter { display: none; }
@media (min-width: 900px) {
  .day { padding-top: 200px; }
  .scene__text { padding: 80px 8vw; }
}
/* 動く版：画面に重ねて置き、スクロールで入れ替える */
.is-motion .day { padding-top: 200px; }
.is-motion .day__inner { position: relative; height: 100vh; overflow: hidden; }
.is-motion .scene { position: absolute; inset: 0; min-height: 0; }
.is-motion .scene + .scene { visibility: hidden; }
.is-motion .day__meter { display: flex; flex-direction: column; gap: 18px; position: absolute; z-index: 3; right: 24px; top: 50%; transform: translateY(-50%); font-family: var(--font-ja); font-size: 16px; }
.is-motion .day__meter li { display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, .55); transition: color .4s; }
.is-motion .day__meter li::before { content: ""; width: 24px; height: 1px; background: currentColor; transition: width .4s; }
.is-motion .day__meter li.is-on { color: #fff; }
.is-motion .day__meter li.is-on::before { width: 48px; }

/* ===== 演出③：お部屋 ===== */
.rooms { background: var(--c-bg); padding: 112px 0; overflow: hidden; }
.rooms__head { display: grid; grid-template-columns: auto 1fr; gap: 0 24px; align-items: end; padding: 0 20px; margin-bottom: 40px; }
.rooms__head .en-label { grid-column: 1 / -1; }
.rooms__lead { font-size: 16px; }
.rooms__viewport { overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; padding-bottom: 12px; }
.rooms__track { display: flex; gap: 20px; padding: 0 20px; width: max-content; }
.room { width: 82vw; max-width: 560px; scroll-snap-align: center; background: #fff; }
.room img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.room__body { padding: 24px; }
.room__no { font-family: var(--font-en); font-size: 32px; color: var(--c-accent-text); line-height: 1; }
.room h3 { font-family: var(--font-ja); font-weight: 700; font-size: 22px; color: var(--c-main); margin: 12px 0 8px; }
.room__price { margin-top: 12px; font-size: 15px; color: var(--c-sub); }
.room--end { display: grid; place-content: center; gap: 24px; text-align: center; background: transparent; border: 1px solid var(--c-line); font-family: var(--font-ja); font-size: 20px; color: var(--c-main); min-height: 320px; padding: 32px; }
@media (min-width: 1080px) {
  .rooms { padding: 160px 0; }
  .rooms__head { padding: 0 8vw; margin-bottom: 64px; }
  .room { width: 44vw; max-width: 640px; }
  .rooms__track { padding: 0 8vw; gap: 48px; }
}
.is-motion-pc .rooms__viewport { overflow: visible; scroll-snap-type: none; }

/* ===== お食事（大きな写真に文字の板が重なる） ===== */
.meal { position: relative; padding: 0 0 112px; }
.meal__photo { overflow: hidden; }
.meal__photo img { width: 100%; height: 70vh; min-height: 360px; object-fit: cover; }
.meal__card { position: relative; background: var(--c-bg); margin: -80px 20px 0; padding: 40px 28px; }
.meal__title { font-family: var(--font-ja); font-weight: 700; font-size: clamp(26px, 3.6vw, 40px); line-height: 1.6; color: var(--c-main); margin-bottom: 20px; letter-spacing: .1em; }
@media (min-width: 900px) {
  .meal { padding-bottom: 160px; }
  .meal__photo { width: 78%; margin-left: auto; }
  .meal__photo img { height: 80vh; }
  .meal__card { position: absolute; left: 8vw; bottom: 96px; width: min(480px, 40vw); margin: 0; padding: 56px 48px; box-shadow: 0 30px 60px rgba(28, 26, 23, .12); }
}

/* ===== ご予約 ===== */
.reserve { position: relative; background: var(--c-dark); color: #f2ece2; padding: 120px 20px; text-align: center; overflow: hidden; }
.reserve__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.reserve::before { content: ""; position: absolute; inset: 0; z-index: 1; background: rgba(20, 18, 15, .72); }
.reserve__inner { position: relative; z-index: 2; max-width: 880px; margin: 0 auto; }
.reserve__title { font-family: var(--font-ja); font-weight: 700; font-size: clamp(28px, 4vw, 44px); color: #fff; letter-spacing: .3em; margin-bottom: 40px; }
.plans { display: grid; gap: 16px; margin-bottom: 40px; text-align: left; }
.plan { border: 1px solid rgba(255, 255, 255, .3); padding: 24px; }
.plan h3 { font-family: var(--font-ja); font-weight: 700; font-size: 20px; color: #fff; margin-bottom: 4px; }
.plan__price { margin-top: 8px; color: var(--c-accent); }
.reserve__tel { margin-top: 24px; font-size: 15px; }
@media (min-width: 768px) { .plans { grid-template-columns: 1fr 1fr; gap: 24px; } }

/* ===== アクセス ===== */
.access { padding: 112px 20px; }
.access__inner { max-width: 960px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: start; }
.info { margin: 0; }
.info div { display: grid; gap: 4px; padding: 16px 0; border-bottom: 1px solid var(--c-line); }
.info dt { font-family: var(--font-ja); font-weight: 700; color: var(--c-main); }
.info dd { margin: 0; }
@media (min-width: 768px) { .info div { grid-template-columns: 9em 1fr; gap: 24px; } .access__inner { gap: 80px; } }

/* ===== フッター ===== */
.footer { background: var(--c-dark); color: #e9e1d3; padding: 72px 20px 32px; text-align: center; font-size: 15px; }
.footer__logo { font-family: var(--font-ja); font-weight: 700; font-size: 26px; letter-spacing: .3em; color: #fff; }
.footer__nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 24px; margin: 24px 0; }
.footer__nav a { display: flex; align-items: center; min-height: 44px; text-decoration: none; }
.footer__fiction { margin-top: 24px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}