/* =========================================================
   日々 / OAK nail  —  Site Stylesheet
   アートの質感に寄せたミニマル・画像主体のデザイン
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* 石・珪化木の質感を意識したアースカラー */
  --c-bg:        #f3efe8;   /* 生成り・砂 */
  --c-bg-alt:    #ebe5da;   /* やや濃い砂 */
  --c-ink:       #2a2521;   /* 焦茶の黒 */
  --c-ink-soft:  #5c534a;   /* やわらかい墨 */
  --c-stone:     #8a7d6b;   /* 石のグレージュ */
  --c-accent:    #6f5d49;   /* 木の幹・アンバー */
  --c-line:      #d8cfc1;   /* 罫線 */
  --c-white:     #faf8f4;

  --serif: "Shippori Mincho", "Cormorant Garamond", "Times New Roman", serif;
  --sans:  "Zen Kaku Gothic New", "Helvetica Neue", "Hiragino Sans", sans-serif;

  --maxw: 1180px;
  --gut: clamp(20px, 5vw, 64px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Typography ---------- */
.serif { font-family: var(--serif); }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; line-height: 1.5; letter-spacing: .06em; }

.eyebrow {
  font-family: var(--serif);
  font-size: .72rem;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--c-stone);
  margin-bottom: 1.4em;
  display: block;
}

.section-title {
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  line-height: 1.45;
  margin-bottom: .8em;
  text-wrap: balance;
}
.lead {
  font-family: var(--serif);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--c-ink-soft);
  line-height: 2.2;
}

/* ---------- Layout helpers ---------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { padding: clamp(72px, 11vw, 150px) 0; }
.section--alt { background: var(--c-bg-alt); }
.center { text-align: center; }
.divider { width: 48px; height: 1px; background: var(--c-stone); margin: 2.4em auto; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gut);
  transition: background .5s var(--ease), padding .5s var(--ease), box-shadow .5s var(--ease);
}
.site-header.scrolled {
  background: rgba(243,239,232,.92);
  backdrop-filter: blur(10px);
  padding: 14px var(--gut);
  box-shadow: 0 1px 0 var(--c-line);
}
.brand { font-family: var(--serif); font-size: 1.5rem; letter-spacing: .26em; color: var(--c-white); transition: color .5s var(--ease); }
.brand small { display:block; font-size:.52rem; letter-spacing:.5em; margin-top:.2em; opacity:.8; }
.site-header.scrolled .brand { color: var(--c-ink); }

.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 38px); }
.nav a {
  font-size: .82rem; letter-spacing: .18em; color: var(--c-white);
  transition: color .5s var(--ease), opacity .3s; position: relative; opacity:.92;
}
.site-header.scrolled .nav a { color: var(--c-ink); }
/* 予約ボタンはスクロール後も白文字を保つ（茶色背景に濃文字で読みにくくなるのを防ぐ） */
.nav a.btn--solid,
.site-header.scrolled .nav a.btn--solid { color: var(--c-white); }
.nav a.btn--solid:hover,
.site-header.scrolled .nav a.btn--solid:hover { color: var(--c-white) !important; }
.nav a:not(.btn)::after {
  content:""; position:absolute; left:0; bottom:-6px; width:0; height:1px;
  background: currentColor; transition: width .4s var(--ease);
}
.nav a:not(.btn):hover::after { width:100%; }

.btn {
  border: 1px solid currentColor; padding: .7em 1.7em; border-radius: 999px;
  font-size: .78rem; letter-spacing: .2em; transition: all .4s var(--ease); white-space:nowrap;
}
.btn:hover { background: var(--c-ink); color: var(--c-white) !important; border-color: var(--c-ink); }
.btn--solid { background: var(--c-accent); color: var(--c-white); border-color: var(--c-accent); }
.btn--solid:hover { background: var(--c-ink); border-color: var(--c-ink); }
.btn--lg { padding: 1em 2.6em; font-size: .82rem; }

/* mobile nav */
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; z-index:120; }
.nav-toggle span { width:26px; height:1.5px; background: var(--c-white); transition: all .4s var(--ease); }
.site-header.scrolled .nav-toggle span { background: var(--c-ink); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: grid; place-items: center; text-align: center; color: var(--c-white); overflow:hidden; }
.hero__media { position:absolute; inset:0; }
.hero__media::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(20,17,14,.42), rgba(20,17,14,.28) 40%, rgba(20,17,14,.55)); }
.hero__inner { position: relative; z-index:2; padding: 0 var(--gut); max-width: 760px; }
.hero h1 { font-size: clamp(1.4rem, 7.2vw, 5.2rem); letter-spacing: .08em; line-height:1.35; white-space: nowrap; position: relative; left: 50%; transform: translateX(-50%); width: max-content; max-width: 96vw; padding-left: .08em; }
.hero__sub { font-family: var(--serif); margin-top: 1.4em; font-size: clamp(.95rem,1.7vw,1.15rem); letter-spacing:.22em; opacity:.95; }
.hero__jp { margin-top: 2.2em; font-size:.9rem; letter-spacing:.18em; line-height:2.4; opacity:.9; }
.scroll-cue { position:absolute; bottom:34px; left:50%; transform:translateX(-50%); z-index:2; font-size:.6rem; letter-spacing:.4em; color:var(--c-white); opacity:.8; }
.scroll-cue::after { content:""; display:block; width:1px; height:46px; margin:12px auto 0; background:var(--c-white); animation: cue 2.4s var(--ease) infinite; transform-origin:top; }
@keyframes cue { 0%{transform:scaleY(0);opacity:0} 40%{transform:scaleY(1);opacity:.9} 100%{transform:scaleY(0) translateY(46px);opacity:0} }

/* page hero (sub pages) */
.page-hero { position:relative; min-height: 58svh; display:grid; place-items:center; text-align:center; color:var(--c-white); overflow:hidden; }
.page-hero__media { position:absolute; inset:0; }
.page-hero__media::after { content:""; position:absolute; inset:0; background: rgba(20,17,14,.45); }
.page-hero__inner { position:relative; z-index:2; padding: 90px var(--gut) 0; }
.page-hero h1 { font-size: clamp(2rem,5vw,3.4rem); letter-spacing:.18em; }
.page-hero .eyebrow { color: rgba(250,248,244,.8); }

/* ---------- Image placeholder system ---------- */
/* 画像未設定時のテクスチャ。実画像を images/ に入れると自動で差し替わります */
.ph {
  position: relative; overflow: hidden; background: var(--c-bg-alt);
  background-image:
    radial-gradient(120% 90% at 20% 10%, rgba(138,125,107,.30), transparent 55%),
    radial-gradient(120% 100% at 90% 80%, rgba(111,93,73,.32), transparent 55%),
    linear-gradient(135deg, #cdbfa9 0%, #b3a288 38%, #8a7d6b 70%, #6f5d49 100%);
}
.ph::after {
  content: attr(data-label);
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--serif); font-size: .74rem; letter-spacing: .28em;
  color: rgba(255,255,255,.82); text-align:center; padding: 1.5em;
  text-shadow: 0 1px 6px rgba(0,0,0,.25);
}
.ph img { width:100%; height:100%; object-fit: cover; }
/* 標準は高さautoで、各画像のaspect-ratio（4:3・1:1など）どおりに切り抜き */
img.ph-img { display:block; width:100%; height:auto; object-fit:cover; }
/* 全面背景の画像（ヒーロー・ページヘッダー・帯）は親いっぱいに伸ばす */
.hero__media img.ph-img, .page-hero__media img.ph-img, .band__media img.ph-img { height:100%; }

/* aspect ratio boxes */
.ar-1 { aspect-ratio: 1/1; }
.ar-43 { aspect-ratio: 4/3; }
.ar-34 { aspect-ratio: 3/4; }
.ar-169 { aspect-ratio: 16/9; }
.ar-tall { aspect-ratio: 3/4.4; }

/* ---------- Intro / split blocks ---------- */
.split { display:grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 80px); align-items:center; }
.split--reverse .split__media { order: 2; }
.split__media { border-radius: 2px; }
.split__body p + p { margin-top: 1.4em; }

/* ---------- Gallery grid ---------- */
.gallery-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap: clamp(8px, 1.4vw, 18px); }
.gallery-grid .ph, .gallery-grid figure { border-radius:2px; overflow:hidden; }
.gallery-grid figure { position:relative; }
.gallery-grid .cap { position:absolute; left:0; bottom:0; right:0; padding:.8em 1em; font-size:.7rem; letter-spacing:.2em; color:#fff; background:linear-gradient(transparent, rgba(0,0,0,.55)); opacity:0; transition:opacity .4s var(--ease); }
.gallery-grid figure:hover .cap { opacity:1; }
.gallery-grid img, .gallery-grid .ph { transition: transform 1.1s var(--ease); }
.gallery-grid figure:hover img, .gallery-grid figure:hover .ph { transform: scale(1.05); }

.mosaic { display:grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 1fr; gap: clamp(8px,1.2vw,16px); }
.mosaic > * { overflow:hidden; border-radius:2px; }
.mosaic .span2 { grid-column: span 2; }
.mosaic .row2 { grid-row: span 2; }

/* ---------- Concept band ---------- */
.band { position:relative; color:var(--c-white); text-align:center; padding: clamp(90px,14vw,180px) var(--gut); overflow:hidden; }
.band__media { position:absolute; inset:0; }
.band__media::after { content:""; position:absolute; inset:0; background:rgba(20,17,14,.5); }
.band__inner { position:relative; z-index:2; max-width:720px; margin-inline:auto; }
/* 画像なしの無地バンド（石を思わせる落ち着いたダークグラデーション） */
/* 高級感のある無地バンド：上部に柔らかな照り＋深めの暖色グラデ＋内側ゴールド枠 */
.band--solid {
  background:
    radial-gradient(120% 150% at 50% -20%, rgba(255,249,238,.16), transparent 58%),
    linear-gradient(135deg, #6f6150 0%, #574a3a 55%, #45392c 125%);
}
.band--solid .eyebrow { color: rgba(208,189,156,.92) !important; }
.band--solid .lead { color: rgba(252,249,242,.96); }
.band .lead { color: rgba(250,248,244,.94); }

/* ---------- Menu ---------- */
.menu-list { max-width: 760px; margin-inline:auto; }
.menu-item {
  display:flex; align-items:baseline; justify-content:space-between; gap:1.5em;
  padding: 1.7em 0; border-bottom: 1px solid var(--c-line);
}
.menu-item:first-child { border-top: 1px solid var(--c-line); }
.menu-item__name { font-family:var(--serif); font-size:1.06rem; letter-spacing:.06em; }
.menu-item__name .tag { display:inline-block; font-family:var(--sans); font-size:.6rem; letter-spacing:.16em; background:var(--c-accent); color:#fff; padding:.25em .7em; border-radius:999px; margin-left:.8em; vertical-align:middle; }
.menu-item__desc { font-size:.8rem; color:var(--c-ink-soft); margin-top:.5em; max-width: 44ch; }
.menu-item__price { font-family:var(--serif); font-size:1.15rem; white-space:nowrap; color:var(--c-accent); }
.menu-note { font-size:.78rem; color:var(--c-stone); margin-top:2em; text-align:center; line-height:2; }

/* ---------- Info / access ---------- */
.info-table { width:100%; border-collapse:collapse; }
.info-table th, .info-table td { text-align:left; padding:1.2em 0; border-bottom:1px solid var(--c-line); vertical-align:top; font-size:.88rem; }
.info-table th { width: 9em; font-family:var(--serif); font-weight:500; color:var(--c-ink-soft); letter-spacing:.1em; }
.map-frame { width:100%; aspect-ratio:16/10; border:0; border-radius:2px; filter: grayscale(.25) contrast(.95); }

/* ---------- Reservation ---------- */
.reserve-grid { display:grid; grid-template-columns: 1fr 1fr; gap: clamp(28px,5vw,72px); }
.card {
  background: var(--c-white); border:1px solid var(--c-line); border-radius:3px;
  padding: clamp(28px,4vw,52px); height:100%;
}
.card h3 { font-size:1.3rem; margin-bottom:.6em; }
.card p.note { font-size:.84rem; color:var(--c-ink-soft); margin-bottom:1.8em; }

.field { margin-bottom:1.4em; }
.field label { display:block; font-size:.74rem; letter-spacing:.14em; color:var(--c-ink-soft); margin-bottom:.6em; }
.field label .req { color:var(--c-accent); margin-left:.3em; }
.field input, .field select, .field textarea {
  width:100%; font-family:var(--sans); font-size:.92rem; color:var(--c-ink);
  background: var(--c-bg); border:1px solid var(--c-line); border-radius:2px;
  padding:.85em 1em; transition:border-color .3s; letter-spacing:.04em;
}
.field input:focus, .field select:focus, .field textarea:focus { outline:none; border-color:var(--c-accent); }
.field textarea { resize:vertical; min-height:120px; }
.form-msg { font-size:.82rem; margin-top:1em; padding:.9em 1.1em; border-radius:2px; display:none; }
.form-msg.ok { display:block; background:#e7eee2; color:#3a5a32; }
.form-msg.ng { display:block; background:#f3e3e0; color:#8a3f33; }
button:disabled { opacity:.6; cursor:default; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-ink); color: rgba(250,248,244,.82); padding: clamp(56px,8vw,90px) 0 40px; }
.footer-grid { display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap: clamp(28px,5vw,60px); margin-bottom:3.5em; }
.site-footer .brand { color:var(--c-white); }
.site-footer h4 { font-size:.72rem; letter-spacing:.3em; text-transform:uppercase; color:var(--c-stone); margin-bottom:1.4em; }
.site-footer a { font-size:.86rem; opacity:.85; transition:opacity .3s; }
.site-footer a:hover { opacity:1; }
.footer-links li { margin-bottom:.9em; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.12); padding-top:2em; display:flex; justify-content:space-between; flex-wrap:wrap; gap:1em; font-size:.7rem; letter-spacing:.16em; color:var(--c-stone); }

/* ---------- Reveal animation ---------- */
.reveal { opacity:0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.in { opacity:1; transform:none; }
.reveal.d1 { transition-delay:.12s; } .reveal.d2 { transition-delay:.24s; } .reveal.d3 { transition-delay:.36s; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav { position:fixed; inset:0; flex-direction:column; justify-content:center; gap:30px;
         background: rgba(26,22,18,.97); transform: translateX(100%); transition: transform .5s var(--ease); }
  .nav.open { transform:none; }
  .nav a, .site-header.scrolled .nav a { color:var(--c-white); font-size:1.05rem; letter-spacing:.24em; }
  .nav-toggle { display:flex; }
  .nav-toggle.open span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2){ opacity:0; }
  .nav-toggle.open span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }
  .nav-toggle.open span, .site-header.scrolled .nav-toggle.open span { background:var(--c-white); }
  .split, .reserve-grid { grid-template-columns: 1fr; }
  .split--reverse .split__media { order:0; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .mosaic { grid-template-columns: repeat(2,1fr); }
  .mosaic .span2 { grid-column: span 2; }
}
@media (max-width: 600px) {
  /* スマホのファーストビューをすっきり：説明文は隠してコピーに集中 */
  .hero__jp { display:none; }
  .hero__inner { padding-bottom: 2em; }
}
@media (max-width: 480px) {
  .menu-item { flex-direction:column; gap:.4em; }
  .info-table th { width:6.5em; }
}