/* P3V2 の演出。pattern.css（P3 本線契約）のあとに読む。契約は spec/p3-v2.md */

/* --- ホーム: 背景の補間とセクションの scale --- */
html[data-mood="on"] body { background: var(--home-bg, var(--bg)); }

html[data-motion="on"] .reveal {
  transform: translateY(14px) scale(var(--sec-scale, 1));
  transform-origin: center top;
}
html[data-motion="on"] .reveal.is-visible { transform: scale(var(--sec-scale, 1)); }

/* --- TOP の探すセクション: 左は fixed で完全固定の切り替え見出し1本、右だけがスクロールする --- */
.splitflow {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 3.4fr);
  gap: clamp(32px, 4vw, 64px);
  align-items: start;
  width: min(1600px, calc(100% - clamp(40px, 4vw, 64px) * 2));
  margin-top: calc(var(--space-section) * 0.73);
}
/* 左カラムは fixed。ページスクロールで Y は動かない。左端・幅・垂直中央の線は JS が1列目とヘッダーを実測して :root の CSS 変数に載せる */
.splitflow-side {
  position: fixed;
  top: var(--split-midy, 50vh);
  left: calc(var(--split-left, 0px) + var(--split-width, 320px) * 0.2);
  width: calc(var(--split-width, 320px) * 0.8);
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0s;
}
.splitflow-side.is-hidden {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}
.splitflow-side a { pointer-events: auto; }
.splitflow-item {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}
.splitflow-item.is-on {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.28s ease .12s, visibility 0s;
}
.splitflow-body { min-width: 0; grid-column: 2; }
.splitflow-sec:first-child { margin-top: 0; }
.splitflow-sec-head { display: none; }
/* デスクトップは1セクション=1画面。地図・カルーセルは画面の垂直中央に収める（高さは min-height のみ。モバイルは通常フロー） */
@media (min-width: 901px) {
  .splitflow-sec {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

/* 上下スクロールは縦の円（立体）。perspective は親の .splitflow-body が持つ（900px、perspective-origin は JS がビューポート中央へ追従させる）。値は rAF（bindHomeMood）が毎フレーム --sec-rx / --sec-tz / --sec-scale / --sec-op に連続値で載せる（中央 |d| < 0.28 は d² 圧縮で正面に吸い込む）。transform / opacity に transition は付けない（段打ちになる）。preserve-3d で正面のセクションが必ず手前に描かれる。モバイルは通常フロー */
@media (min-width: 901px) {
  html[data-motion="on"] .splitflow-body { position: relative; perspective: 900px; transform-style: preserve-3d; }
  html[data-motion="on"] .splitflow-sec.reveal,
  html[data-motion="on"] .splitflow-sec.reveal.is-visible {
    transform: rotateX(var(--sec-rx, 0deg)) translateZ(var(--sec-tz, 0px)) scale(var(--sec-scale, 1));
    opacity: var(--sec-op, 1);
    transition: none;
  }
}
.split-title { font-size: calc(var(--fs-h2) * 1.08); letter-spacing: .12em; margin-bottom: 20px; }

/* 左見出しの切り替えはクロスフェード＋字の据わり（跳ねない）。静止状態は常に最終形 */
html[data-motion="on"] .splitflow-item .split-title {
  letter-spacing: .3em;
  transform: translateY(-.1em);
  transition:
    letter-spacing 0.35s cubic-bezier(.22,.61,.21,1) .12s,
    transform 0.35s cubic-bezier(.22,.61,.21,1) .12s;
}
html[data-motion="on"] .splitflow-item.is-on .split-title { letter-spacing: .12em; transform: none; }
html[data-motion="on"] .splitflow-item .more { opacity: 0; transition: opacity 0.28s ease 0.08s; }
html[data-motion="on"] .splitflow-item.is-on .more { opacity: 1; }

/* モバイルのセクション頭（900px 以下でだけ出す）も同じ据わり */
html[data-motion="on"] .splitflow-sec-head .split-title {
  opacity: 0;
  letter-spacing: .3em;
  transform: translateY(-.1em);
  transition:
    opacity 0.35s ease .12s,
    letter-spacing 0.35s cubic-bezier(.22,.61,.21,1) .12s,
    transform 0.35s cubic-bezier(.22,.61,.21,1) .12s;
}
html[data-motion="on"] .splitflow-sec.is-visible .splitflow-sec-head .split-title { opacity: 1; letter-spacing: .12em; transform: none; }
html[data-motion="on"] .splitflow-sec-head .more { opacity: 0; transition: opacity 0.28s ease 0.08s; }
html[data-motion="on"] .splitflow-sec.is-visible .splitflow-sec-head .more { opacity: 1; }

/* --- TOP の About: 文は左レーン・画像は右レーンの垂直中央に fixed（HERO を抜けてから探す手前まで）。モバイル・JS 無しは通常フロー --- */
@media (min-width: 901px) {
  html[data-motion="on"] .home-about-zone { min-height: 100vh; margin-top: var(--space-section); }
  /* 箱は2カラム: 左=文（左レーンの既存座標）、右=画像（探すの右レーンと同じ幅）。左レーン左端から右レーン右端までまたぐ */
  html[data-motion="on"] .home-about {
    position: fixed;
    top: var(--split-midy, 50vh);
    left: var(--split-left, 64px);
    width: calc(var(--split-width, 320px) + var(--split-gap, 48px) + var(--split-right-w, 56vw));
    transform: translateY(-50%);
    margin: 0;
    display: grid;
    grid-template-columns: var(--split-width, 320px) minmax(0, 1fr);
    gap: var(--split-gap, 48px);
    align-items: center;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s ease, visibility 0s linear 0.22s;
  }
  html[data-motion="on"] .home-about.is-on {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.28s ease .12s, visibility 0s;
  }
  /* 字の据わりは splitflow-item と同じ。跳ねない */
  html[data-motion="on"] .home-about h2 {
    letter-spacing: .3em;
    transform: translateY(-.1em);
    transition:
      letter-spacing 0.35s cubic-bezier(.22,.61,.21,1) .12s,
      transform 0.35s cubic-bezier(.22,.61,.21,1) .12s;
  }
  html[data-motion="on"] .home-about.is-on h2 { letter-spacing: .12em; transform: none; }
  html[data-motion="on"] .home-about-text { padding-left: calc(var(--split-width, 320px) * 0.2); }
  html[data-motion="on"] .home-about .home-about-fig {
    aspect-ratio: 4 / 3;
    max-height: 72vh;
    width: 86%;
    justify-self: end;
    opacity: 0;
    transition: opacity 0.28s ease 0.08s;
  }
  html[data-motion="on"] .home-about.is-on .home-about-fig { opacity: 1; }
}

/* --- 円形カルーセル: カードは円周上に並び、中央の1件だけが translateZ(+80px) でカメラに吸い込まれる（円の中心は列の下、perspective は .carousel）。左右は円周＋奥（Z マイナス）で小さく薄い。位置は JS が --cx/--cy/--cz（translateZ の px）/--czi（z-index）/--cr/--cs/--co で渡す。送りは transform・opacity ともに 0.52 秒 cubic-bezier(.45,0,.12,1)（ずれ禁止）。padding-top は中央カードの Z 拡大分の逃がし --- */
.carousel { position: relative; overflow: hidden; padding: 24px 0 20px; perspective: 1000px; }
.carousel-track { position: relative; height: var(--caro-h, 420px); transform-style: preserve-3d; }
.carousel-track > * {
  position: absolute;
  left: 50%;
  top: 0;
  width: var(--caro-w, 300px);
  margin-left: calc(var(--caro-w, 300px) / -2);
  transform: translate3d(var(--cx, 0px), var(--cy, 0px), var(--cz, 0px)) rotate(var(--cr, 0deg)) scale(var(--cs, .8));
  opacity: var(--co, 0);
  z-index: var(--czi, 0);
  transition: transform 0.52s cubic-bezier(.45, 0, .12, 1), opacity 0.52s cubic-bezier(.45, 0, .12, 1);
}
[data-carousel="projects"] { --caro-w: min(400px, 58vw); }
[data-carousel="materials"] { --caro-w: min(280px, 60vw); }
[data-carousel="lkd"] { --caro-w: min(230px, 52vw); }

/* --- 地図の地方ズーム（TOP） --- */
.jp-zoom .jp-stage { padding: clamp(16px, 3vh, 32px) 16px 14px; }
.jp-zoom-layer {
  transform-box: view-box;
  transform-origin: 0 0;
  transition: transform .9s cubic-bezier(.22,.61,.21,1);
}
.jp-zoom .jp-map path { vector-effect: non-scaling-stroke; cursor: pointer; }
.jp-districts { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; margin-top: 14px; }
.jp-district {
  border: 0;
  background: none;
  padding: 6px 2px;
  min-height: 44px;
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color .5s ease, border-color .5s ease;
}
.jp-district:hover, .jp-district:focus-visible { color: var(--ink); }
.jp-district.is-on { color: var(--ink); border-bottom-color: var(--ink); }
.jp-zoombar {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 16px;
  margin: 12px 0 0;
  min-height: 44px;
  visibility: hidden;
  opacity: 0;
  transition: opacity .5s ease;
}
.jp-zoombar.is-on { visibility: visible; opacity: 1; }
.jp-back {
  border: 0;
  background: none;
  padding: 6px 2px;
  min-height: 44px;
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--ink);
  cursor: pointer;
  border-bottom: 1px solid var(--ink);
}
.jp-zoomname { color: var(--muted); font-size: .8125rem; letter-spacing: .08em; }

@media (max-width: 900px) {
  .splitflow { grid-template-columns: 1fr; gap: 28px; width: min(var(--max), calc(100% - var(--pad) * 2)); }
  .splitflow-side { display: none; }
  .splitflow-body { grid-column: 1; }
  .splitflow-sec-head { display: block; margin-bottom: 24px; }
}

/* --- ホバーはゆっくり（0.7〜1.1 秒）。跳ねない --- */
@media (hover: hover) and (pointer: fine) {
  .header-nav a::after { transition: transform .8s cubic-bezier(.22,.61,.21,1); }
  .logo { transition: letter-spacing .8s cubic-bezier(.22,.61,.21,1); }
  .card-photo img,
  .home-about-fig img,
  .tile img,
  .lkd-card img { transition: transform 1s cubic-bezier(.22,.61,.21,1); }
  .lkd-card .lkd-kanji { transition: letter-spacing .8s cubic-bezier(.22,.61,.21,1); }
}

/* --- 素材と実例のトーン --- */
.tone-projects .page-hero img { opacity: .62; }
.tone-projects .card-photo { aspect-ratio: 16 / 10; }
.tone-projects .card-meta { padding-top: 8px; }
.tone-projects .card-meta h3 { font-size: calc(var(--fs-h2) * 0.67); }
.tone-projects .kicker { font-size: .6875rem; }

.tone-materials .page-hero img { opacity: .4; }
.tone-materials .card { background: var(--paper); }
.tone-materials .card-meta { padding: 12px 14px 16px; }
.tone-materials .card-meta h3 { letter-spacing: .1em; }
.tone-materials .tags { margin-top: 10px; }

/* --- 地域から探すの整え --- */
.jp-wrap { gap: clamp(36px, 5vw, 72px); margin-top: 48px; }
.jp-side { padding-top: 24px; }
.jp-side .label { font-size: var(--fs-small); letter-spacing: .12em; color: var(--muted); }
.jp-legend { margin-top: 24px; }
.jp-areas { margin-top: 20px; gap: 12px 20px; }
.jp-area { padding-bottom: 4px; }
.region-sub { margin-top: 64px; }
.region-back { margin-bottom: 28px; }

@media (max-width: 900px) {
  .jp-wrap { gap: 28px; margin-top: 32px; }
  .jp-stage { padding: 20px 12px 12px; }
  .jp-mapbox { width: 100%; }
  .region-sub { margin-top: 48px; }
}

/* --- 素材詳細のコラム --- */
.columns {
  width: min(var(--max), calc(100% - var(--pad) * 2));
  margin: calc(var(--space-section) * 0.83) auto 0;
}
.column-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  border-bottom: 1px solid var(--line);
}
.column-tabs button {
  border: 0;
  background: none;
  padding: 10px 2px;
  min-height: 44px;
  font-family: var(--serif);
  font-size: calc(var(--fs-h2) * 0.92);
  letter-spacing: .08em;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
  transition: color .5s ease, border-color .5s ease;
}
.column-tabs button.is-on { color: var(--ink); border-bottom-color: var(--ink); }

.column-panel {
  max-width: 880px;
  margin: 0 auto;
  padding-top: 56px;
  line-height: 2;
}
.column-panel > p { margin-bottom: 1.2em; }
.column-lead { font-family: var(--serif); font-size: 1.125rem; line-height: 1.9; margin-bottom: 1.6em; }
.column-place { color: var(--muted); font-size: .8125rem; letter-spacing: .1em; margin-bottom: 2em; }
.column-fig { margin: 2.4em 0; overflow: hidden; }
.column-fig img { aspect-ratio: 3 / 2; background: var(--paper); }
.column-spec { margin-top: 2.4em; border-top: 1px solid var(--line); }
.column-spec > div { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.column-spec dt { color: var(--muted); font-size: .75rem; letter-spacing: .08em; padding-top: 3px; }
.column-spec dd { margin: 0; font-size: .875rem; }

/* コラムの据わり。静止状態は常に最終形 */
html[data-motion="on"] .column-panel .column-lead,
html[data-motion="on"] .column-panel .column-place {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .75s ease .2s, transform .75s cubic-bezier(.22,.61,.21,1) .2s;
}
html[data-motion="on"] .column-panel.is-visible .column-lead,
html[data-motion="on"] .column-panel.is-visible .column-place { opacity: 1; transform: none; }

html[data-motion="on"] .column-fig {
  opacity: 0;
  transform: translateY(16px);
  box-shadow: 0 18px 40px rgba(43, 38, 32, .14);
  transition:
    opacity 1.1s ease .1s,
    transform 1.1s cubic-bezier(.22,.61,.21,1) .1s,
    box-shadow 1.5s ease .1s;
}
html[data-motion="on"] .column-fig img {
  transform: scale(1.04);
  filter: saturate(.78) brightness(1.03);
  transition:
    transform 2.2s cubic-bezier(.22,.61,.21,1) .1s,
    filter 1.8s ease .1s;
}
html[data-motion="on"] .column-fig.is-visible {
  opacity: 1;
  transform: none;
  box-shadow: 0 0 0 rgba(43, 38, 32, 0);
}
html[data-motion="on"] .column-fig.is-visible img { transform: none; filter: none; }

html[data-motion="on"] .column-panel > p:not(.column-lead):not(.column-place) {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity .7s ease var(--pd, 0ms),
    transform .7s cubic-bezier(.22,.61,.21,1) var(--pd, 0ms);
}
html[data-motion="on"] .column-panel > p.is-visible { opacity: 1; transform: none; }

html[data-motion="on"] .column-spec {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .7s ease .1s, transform .7s cubic-bezier(.22,.61,.21,1) .1s;
}
html[data-motion="on"] .column-spec.is-visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .column-panel { padding-top: 40px; }
  .column-fig { margin: 1.8em 0; }
}