/* =========================================================
   YADO MUKU — 和モダン静的サイト
   Design tokens & base styles
   ========================================================= */

:root {
  /* Palette — washi / wood / sumi */
  --color-bg: #f7f4ee;
  --color-bg-alt: #efe9df;
  --color-text: #33302b;
  --color-text-soft: #6e675c;
  --color-accent: #6b6149;
  /* muted wood / olive */
  --color-accent-dark: #4c4534;
  --color-line: #ddd5c6;
  --color-white: #fffdf9;

  /* Typography */
  --font-serif: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --maxw: 1080px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --header-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.9;
  font-size: 16px;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.05em;
  margin: 0;
}

p {
  margin: 0 0 1.2em;
}

/* ---------- Layout helpers ---------- */
.section {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
}

.section--alt {
  background: var(--color-bg-alt);
}

.container {
  max-width: var(--maxw);
  margin-inline: auto;
}

.container--narrow {
  max-width: 760px;
}

.section-head {
  text-align: center;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-head .en {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-head h2 {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
}

/* 日本語の見出しは短いので、小さい画面でも改行させない
   （英語は長文の見出しがあるため対象外） */
html[lang="ja"] .section-head h2 {
  white-space: nowrap;
}

.lead {
  font-size: clamp(0.98rem, 2.4vw, 1.06rem);
  color: var(--color-text-soft);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.95em 2.4em;
  font-family: var(--font-sans);
  font-size: 0.86rem;
  letter-spacing: 0.16em;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

.btn:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--solid {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--solid:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), height 0.4s var(--ease);
}

.site-header.is-scrolled,
.site-header.is-solid {
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--color-line);
}

/* スクロール時・下層ページ（is-solid）はヘッダーを少しだけ縮める
   （ロゴサイズは変えず、上下の余白だけ詰める） */
.site-header.is-scrolled,
.site-header.is-solid {
  height: 58px;
}

/* ヒーロー上（トップの未スクロール時・透明ヘッダー）は暗い写真の上なので白文字に */
.site-header:not(.is-scrolled):not(.is-solid) .brand-name,
.site-header:not(.is-scrolled):not(.is-solid) .nav-links a,
.site-header:not(.is-scrolled):not(.is-solid) .lang-switch a {
  color: var(--color-white);
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.55);
}

.site-header:not(.is-scrolled):not(.is-solid) .nav-toggle span {
  background: var(--color-white);
}

/* ロゴ切り替え: 通常は通常ロゴ、ヒーロー上の透明時のみ白ロゴ。
   2枚を重ねて opacity で切り替えることで、切替時に位置がずれない（リフローしない） */
.brand .logo-white {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.brand .logo-dark {
  transition: opacity 0.4s var(--ease);
}

.site-header:not(.is-scrolled):not(.is-solid) .logo-dark {
  opacity: 0;
}

.site-header:not(.is-scrolled):not(.is-solid) .logo-white {
  opacity: 1;
}

/* モバイルのメニュー展開中は明色オーバーレイなので文字色・ハンバーガーを暗色に戻す */
.site-header:has(.nav.is-open) .brand-name,
.site-header:has(.nav.is-open) .nav-links a,
.site-header:has(.nav.is-open) .lang-switch a {
  color: var(--color-text);
  text-shadow: none;
}

.site-header:has(.nav.is-open) .nav-toggle span {
  background: var(--color-text);
}

.site-header:has(.nav.is-open) .logo-dark {
  opacity: 1;
}

.site-header:has(.nav.is-open) .logo-white {
  opacity: 0;
}

.brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.brand img {
  height: 34px;
  width: auto;
}

.brand .brand-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.22em;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
}

.nav-links {
  display: flex;
  gap: clamp(1rem, 2.2vw, 1.9rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.lang-switch a {
  color: var(--color-text-soft);
}

.lang-switch a.is-active {
  color: var(--color-accent);
  font-weight: 700;
}

.lang-switch .sep {
  color: var(--color-line);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  margin: 0 auto;
  background: var(--color-text);
  transition: transform 0.35s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  overflow: hidden;
}

/* スマホでは全画面だと縦長すぎるので高さを抑える */
@media (max-width: 640px) {
  .hero {
    min-height: 64vh;
    min-height: 64svh;
  }
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20, 17, 12, 0.35) 0%, rgba(20, 17, 12, 0.15) 40%, rgba(20, 17, 12, 0.45) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  transform: scale(1.05);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 0 var(--gutter);
}

.hero h1 {
  font-size: clamp(1.8rem, 6vw, 3.4rem);
  letter-spacing: 0.16em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
  margin-bottom: 1rem;
}

.hero .hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(0.9rem, 2.6vw, 1.15rem);
  letter-spacing: 0.18em;
  opacity: 0.95;
}

/* 日本語トップは見出し・サブを小画面でも1行に収める
   （はみ出さないよう下限を下げてフォントを縮小。英語は文が長いため対象外） */
html[lang="ja"] .hero h1,
html[lang="ja"] .hero .hero-sub {
  white-space: nowrap;
}

html[lang="ja"] .hero h1 {
  font-size: clamp(1.25rem, 6vw, 3.4rem);
}

html[lang="ja"] .hero .hero-sub {
  font-size: clamp(0.62rem, 3vw, 1.15rem);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 1;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--color-white);
  writing-mode: vertical-rl;
}

.hero-scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 44px;
  margin: 10px auto 0;
  background: var(--color-white);
  animation: scrollline 2.2s var(--ease) infinite;
  transform-origin: top;
}

@keyframes scrollline {
  0% {
    transform: scaleY(0);
  }

  40% {
    transform: scaleY(1);
  }

  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* =========================================================
   Concept
   ========================================================= */
.concept {
  text-align: center;
}

.concept .catch {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 4vw, 2rem);
  letter-spacing: 0.08em;
  margin-bottom: 2rem;
  margin-left: auto;
  margin-right: auto;
  width: max-content;
  max-width: 100%;
  text-align: center;
  line-height: 1.8;
}

html[lang="ja"] .concept .catch {
  white-space: nowrap;
}

.concept p {
  text-align: left;
}

/* =========================================================
   Rooms (overview)
   ========================================================= */
.rooms-overview .rooms-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.rooms-overview .rooms-text p {
  text-align: left;
}

/* =========================================================
   Media / placeholders
   ========================================================= */
.media {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-alt);
  border-radius: 2px;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--4x3 {
  aspect-ratio: 4 / 3;
}

.media--16x9 {
  aspect-ratio: 16 / 9;
}

.media--1x1 {
  aspect-ratio: 1 / 1;
}

/* placeholder when no photo yet */
.ph {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  background:
    repeating-linear-gradient(45deg, #ece5d8 0 12px, #e6dece 12px 24px);
  color: var(--color-text-soft);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-align: center;
}

/* =========================================================
   Spots (neighborhood)
   ========================================================= */
.spots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.4rem);
}

.spot-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.spot-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(76, 69, 52, 0.12);
}

.spot-card .media--4x3 {
  border-radius: 0;
}

.spot-card .spot-body {
  padding: 1.4rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.spot-card h3 {
  font-size: 1.12rem;
  margin-bottom: 0.5rem;
}

.spot-card .spot-meta {
  font-size: 0.78rem;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
}

.spot-card .spot-desc {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: 1.2rem;
}

.spot-card .spot-links {
  margin-top: auto;
  display: flex;
  gap: 1.2rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}

.spot-card .spot-links a {
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.spot-card .spot-links a:hover {
  border-color: var(--color-accent);
}

/* =========================================================
   Reservation
   ========================================================= */
.reservation {
  text-align: center;
}

.reservation .note {
  font-size: 0.85rem;
  color: var(--color-text-soft);
  margin-top: 1.5rem;
}

/* =========================================================
   Access
   ========================================================= */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.access-map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: 0;
  border-radius: 2px;
  filter: grayscale(0.2);
}

.access-info h3 {
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin: 1.6rem 0 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-line);
}

.access-info h3:first-child {
  margin-top: 0;
}

.access-info ul {
  margin: 0 0 0.8rem;
  padding-left: 1.1em;
}

.access-info li {
  margin-bottom: 0.2em;
}

.access-info .addr {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
}

/* =========================================================
   Contact form
   ========================================================= */
.contact {
  background: var(--color-bg-alt);
}

.contact-form {
  margin-top: 2.5rem;
}

.field {
  margin-bottom: 1.5rem;
}

.field label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.field label .req {
  color: #a4582f;
  margin-left: 0.3em;
  font-size: 0.7rem;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.85em 1em;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  transition: border-color 0.3s var(--ease);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* バリデーションエラーのフィールド */
.field input.is-invalid,
.field textarea.is-invalid {
  border-color: #c0392b;
  background: #fdf6f4;
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

/* honeypot — hidden from humans */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions {
  text-align: center;
  margin-top: 2rem;
}

.form-status {
  text-align: center;
  margin-top: 1.2rem;
  font-size: 0.88rem;
  min-height: 1.4em;
}

.form-status.is-error {
  color: #a4582f;
}

.form-status.is-ok {
  color: var(--color-accent);
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--color-accent-dark);
  color: #d9d2c2;
  padding: clamp(3rem, 7vw, 5rem) var(--gutter) 2rem;
  text-align: center;
}

.site-footer .f-brand {
  display: block;
  height: 44px;
  width: auto;
  margin: 0 auto 1.2rem;
}

.site-footer .f-tagline {
  font-size: 0.84rem;
  opacity: 0.8;
  margin-bottom: 2rem;
}

.social {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.social:hover {
  border-color: #d9d2c2;
}

.social svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.f-description {
  margin-top: 2.0rem;
  font-size: clamp(0.55rem, 1vw, 0.7rem);
  letter-spacing: 0.1em;
  opacity: 0.6;
}

.f-copy {
  margin-top: 1.0rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  opacity: 0.6;
}

/* =========================================================
   Sub-page (rooms detail)
   ========================================================= */
.subpage-hero {
  margin-top: var(--header-h);
  padding: clamp(3rem, 8vw, 5rem) var(--gutter) clamp(2rem, 5vw, 3rem);
  text-align: center;
  background: var(--color-bg-alt);
}

.subpage-hero h1 {
  font-size: clamp(1.6rem, 5vw, 2.6rem);
}

.subpage-hero .en {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.8rem;
}

.breadcrumb {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--color-text-soft);
  margin-top: 1.2rem;
}

.breadcrumb a {
  color: var(--color-accent);
}

/* PC: 見出しを全幅で上に置き、その下に「写真（左）｜文章（右）」 */
.room-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "title title"
    "media text";
  gap: clamp(1.2rem, 3vw, 2rem) clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.room-block h3 {
  grid-area: title;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  line-height: 1.5;
}

.room-block .room-media {
  grid-area: media;
}

.room-block .room-text {
  grid-area: text;
}

/* PCは偶数ブロックで写真↔テキストを左右反転（交互配置） */
.room-block:nth-child(even) {
  grid-template-areas:
    "title title"
    "text media";
}

/* フロア表記を小さなラベル（アイブロウ）として上に置き、タイトルを主役に。
   長いタイトルでも自然に折り返して見栄えするレイアウト */
.room-block h3 .floor {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

/* タイトル下の短いアクセント罫で、見出しと本文の境界を明確にする */
.room-block h3::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin-top: 0.9rem;
  background: var(--color-accent);
}

/* 本文は少し落ち着いた色にして、明朝の見出しとの差を明確に */
.room-block .room-text p {
  text-align: left;
  color: var(--color-text-soft);
}

.room-block .room-facts {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.room-block .room-facts li {
  padding: 0.3em 0;
  border-bottom: 1px dotted var(--color-line);
}

.floorplan {
  text-align: center;
  margin-top: 2rem;
}

.floorplan .media {
  max-width: 720px;
  margin-inline: auto;
}

/* 間取り図（1F / 2F の2枚並び） */
.floorplan-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  max-width: 880px;
  margin-inline: auto;
}

.floorplan-item {
  margin: 0;
}

.floorplan-item img {
  width: 100%;
  border: 1px solid var(--color-line);
  border-radius: 2px;
  background: var(--color-white);
}

.floorplan-item figcaption {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-text-soft);
}

@media (max-width: 600px) {
  .floorplan-grid {
    grid-template-columns: 1fr;
  }
}

/* 設備・アメニティのフォトギャラリー */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: clamp(0.8rem, 2vw, 1.2rem);
  margin-top: clamp(2rem, 5vw, 3rem);
}

.back-link {
  text-align: center;
  margin-top: 1rem;
}

/* =========================================================
   Reveal on scroll
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-scroll::after {
    animation: none;
  }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 820px) {

  .rooms-overview .rooms-grid,
  .access-grid,
  .room-block {
    grid-template-columns: 1fr;
  }

  /* スマホでは写真ギャラリーを2列に（アメニティ下・ギャラリー） */
  .photo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* スマホ: 見出し → 写真 → 文章 の縦並び（奇数・偶数とも） */
  .room-block,
  .room-block:nth-child(even) {
    grid-template-areas:
      "title"
      "media"
      "text";
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2.2rem;
    background: rgba(247, 244, 238, 0.98);
    backdrop-filter: blur(6px);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
  }

  .nav.is-open {
    transform: none;
  }

  .nav-links {
    flex-direction: column;
    text-align: center;
    gap: 1.6rem;
  }

  .nav-links a {
    font-size: 1rem;
  }
}