/* ピアノ /piano/（pages/piano.py）。11-11 オーナー「ピアノのページも作成して」。色と書体は style.css の :root の変数だけを使う。
   頭（写真・題・数）の下に 88鍵の鍵盤（押すと鳴る。static/v2/piano.js）→ 01 楽器 → 02 アンサンブル。
   現れ方・題の1字ずつの起き上がり・鍵盤の波は CSS だけ（JS で隠してから出すと、出ていた字がいったん消える）。
   「見えたら」（.rv に .is-seen）と数の回転は static/v2/reveal.js。動きを減らす設定では止まった完成形 */

/* ------------------------------------------------------------ 頭 */
.pn-hero { position: relative; isolation: isolate; overflow: hidden; background: var(--night); color: var(--tx-photo); }
.pn-hero-img {
  position: absolute; left: -2%; top: -2%; z-index: -2; width: 104%; height: calc(100% - var(--kb-h) + 4%); max-width: none; object-fit: cover; object-position: 30% 60%;
  transform: translate3d(calc(var(--mx, 0) * -12px), calc(var(--my, 0) * -8px), 0); transition: transform 0.9s var(--ease);
}
.pn-hero { --kb-h: clamp(92px, 11vw, 150px); }
.pn-hero-shade {
  position: absolute; inset: 0 0 var(--kb-h) 0; z-index: -1;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--scrim) 84%, transparent) 0%, color-mix(in oklch, var(--scrim) 56%, transparent) 36%, color-mix(in oklch, var(--scrim) 8%, transparent) 66%, transparent 80%),
    linear-gradient(0deg, color-mix(in oklch, var(--scrim) 88%, transparent) 0%, color-mix(in oklch, var(--scrim) 30%, transparent) 34%, transparent 56%),
    linear-gradient(180deg, color-mix(in oklch, var(--scrim) 60%, transparent) 0%, transparent 22%);
}
/* 四隅の見当（旅のページの頭と同じ細い罫） */
.pn-frame i { position: absolute; z-index: 0; width: 18px; height: 18px; border: 0 solid color-mix(in oklch, var(--tx-photo) 60%, transparent); }
.pn-frame i:nth-child(1) { left: 14px; top: 14px; border-top-width: 1px; border-left-width: 1px; }
.pn-frame i:nth-child(2) { right: 14px; top: 14px; border-top-width: 1px; border-right-width: 1px; }
.pn-frame i:nth-child(3) { left: 14px; bottom: calc(var(--kb-h) + 14px); border-bottom-width: 1px; border-left-width: 1px; }
.pn-frame i:nth-child(4) { right: 14px; bottom: calc(var(--kb-h) + 14px); border-bottom-width: 1px; border-right-width: 1px; }
.pn-hero-in {
  display: grid; align-content: end; min-height: clamp(440px, calc(100svh - var(--nav-h) - var(--kb-h)), 760px);
  padding-block: clamp(36px, 5vw, 64px) clamp(30px, 3.6vw, 52px);
}
.pn-hero .crumbs { align-self: start; margin-bottom: auto; color: color-mix(in oklch, var(--tx-photo) 72%, transparent); }
.pn-hero .crumbs a { color: var(--tx-photo); }
.pn-hero-in { grid-template-rows: minmax(0, 1fr) auto auto auto; }
.pn-h1-en {
  display: block; font-family: var(--f-display); font-weight: 400; text-transform: uppercase;
  font-size: clamp(5rem, 19vw, 16rem); line-height: 0.84; letter-spacing: 0.004em;
  text-shadow: 0 2px 40px color-mix(in oklch, var(--scrim) 50%, transparent);
}
.pn-h1-en .ch { display: inline-block; transform-origin: 50% 100%; }
.pn-h1-ja { display: block; margin-top: clamp(14px, 1.8vw, 24px); font-weight: 700; font-size: clamp(1.05rem, 1.7vw, 1.4rem); letter-spacing: 0.34em; line-height: 1.3; }
.pn-lead { margin-top: 12px; max-width: 30em; font-size: clamp(0.92rem, 1.1vw, 1.02rem); line-height: 1.9; color: var(--tx-hero); word-break: auto-phrase; }
.pn-h1-ja, .pn-lead, .pn-hero .crumbs, .pn-stats { text-shadow: 0 0 2px color-mix(in oklch, var(--scrim) 80%, transparent), 0 1px 14px color-mix(in oklch, var(--scrim) 60%, transparent); }
.pn-stats { display: flex; flex-wrap: wrap; gap: 10px 0; margin-top: clamp(20px, 2.4vw, 32px); padding-top: 16px; border-top: 1px solid color-mix(in oklch, var(--tx-photo) 38%, transparent); max-width: 620px; }
.pn-stats > div { display: grid; gap: 4px; padding-right: clamp(18px, 2.6vw, 36px); margin-right: clamp(18px, 2.6vw, 36px); border-right: 1px solid color-mix(in oklch, var(--tx-photo) 26%, transparent); }
.pn-stats > div:last-child { padding-right: 0; margin-right: 0; border-right: 0; }
.pn-stats dt { font-size: 0.74rem; letter-spacing: 0.16em; color: var(--tx-hero); }
.pn-stats dd { font-family: var(--f-label); font-weight: 600; font-size: 1.02rem; letter-spacing: 0.04em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.pn-stats strong { margin-right: 4px; font-family: var(--f-display); font-weight: 400; font-size: clamp(1.7rem, 2.6vw, 2.3rem); line-height: 1; letter-spacing: 0.01em; }
.pn-stats > div:nth-child(2) strong { color: var(--red); }

/* ------------------------------------------------------------ 88鍵の鍵盤（頭の下の帯。押すと鳴り、なぞると光る） */
.pn-kb { position: relative; height: var(--kb-h); background: var(--night); border-top: 1px solid var(--line-d); }
.pn-read {
  position: absolute; right: var(--gutter); bottom: calc(100% + 12px); z-index: 1; display: flex; align-items: baseline; gap: 10px; pointer-events: none;
  padding: 4px 10px; background: var(--night); color: var(--tx-d2);
  font-family: var(--f-label); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.14em; font-variant-numeric: tabular-nums;
}
.pn-read b { min-width: 2.2em; font-family: var(--f-display); font-weight: 400; font-size: 1.25rem; letter-spacing: 0.04em; line-height: 1; color: var(--tx-d); }
.pn-read.is-on b { color: var(--red); }
.pn-keys { position: absolute; inset: 6px 0 0 0; cursor: pointer; touch-action: pan-y; -webkit-user-select: none; user-select: none; -webkit-tap-highlight-color: transparent; }
.pn-keys-w { position: absolute; inset: 0; display: flex; }
.pn-keys-w i { flex: 1 1 0; min-width: 0; background: var(--tx-d); border-right: 1px solid var(--night); border-radius: 0 0 3px 3px; transform-origin: 50% 0; transition: background 0.5s ease-out, transform 0.12s; }
.pn-keys-b i {
  position: absolute; top: 0; left: calc(var(--x) * 1%); width: calc(100% / 52 * 0.6); height: 60%; transform: translateX(-50%);
  background: var(--night); border-radius: 0 0 2px 2px; box-shadow: 0 0 0 1px var(--night); transform-origin: 50% 0; transition: background 0.5s ease-out, height 0.12s;
}
.pn-keys i.is-hover { background: color-mix(in oklch, var(--red) 55%, var(--tx-d)); transition-duration: 0.05s; }
.pn-keys-b i.is-hover { background: color-mix(in oklch, var(--red) 70%, var(--night)); }
.pn-keys i.is-on { background: var(--red); transition-duration: 0s; }
.pn-keys-w i.is-on { transform: scaleY(0.965); }
.pn-keys-b i.is-on { height: 57%; }

/* ------------------------------------------------------------ 01 楽器 */
.pn-it { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); align-items: start; }
.pn-it + .pn-it { margin-top: clamp(72px, 9vw, 128px); padding-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--line-d); }
.pn-it-main { grid-column: 1 / span 7; position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 3; background: var(--dark-2); perspective: 1000px; }
.pn-it:nth-of-type(even) .pn-it-main { grid-column: 6 / -1; grid-row: 1; }
.pn-it:nth-of-type(even) .pn-it-body { grid-column: 1 / span 4; grid-row: 1; }
.pn-it-main img { position: absolute; left: 0; top: -6%; width: 100%; height: 112%; max-width: none; object-fit: cover; transition: transform 1.1s var(--ease); }
.pn-it-main:hover img { transform: scale(1.03); }
.pn-it-main::after { content: ""; position: absolute; inset: 10px; border: 1px solid transparent; pointer-events: none; transition: inset 0.4s var(--ease), border-color 0.3s; }
.pn-it-main:hover::after, .pn-it-main:focus-visible::after { inset: 6px; border-color: color-mix(in oklch, var(--tx-photo) 46%, transparent); }
.pn-it-body { grid-column: 9 / -1; display: grid; align-content: start; }
.pn-it-no { display: flex; align-items: baseline; gap: 6px; font-family: var(--f-label); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.1em; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.pn-it-no b { font-family: var(--f-display); font-weight: 400; font-size: clamp(1.7rem, 2.6vw, 2.3rem); line-height: 1; color: transparent; -webkit-text-stroke: 1px var(--fg-2); }
.pn-it h3 { margin-top: 16px; }
.pn-it-en { display: block; font-family: var(--f-display); font-weight: 400; text-transform: uppercase; font-size: clamp(2.2rem, 3.6vw, 3.4rem); line-height: 0.94; letter-spacing: 0.006em; overflow-wrap: anywhere; }
.pn-it-ja { display: block; margin-top: 12px; font-weight: 700; font-size: 1rem; letter-spacing: 0.16em; line-height: 1.5; color: var(--fg-2); }
.pn-it-data { display: flex; margin-top: 22px; border-block: 1px solid var(--line-d); }
.pn-it-data > div { display: grid; gap: 4px; padding: 11px 18px 12px 0; margin-right: 18px; border-right: 1px solid var(--line-d); }
.pn-it-data > div:last-child { margin-right: 0; padding-right: 0; border-right: 0; }
.pn-it-data dt { font-family: var(--f-label); font-weight: 600; font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--fg-3); }
.pn-it-data dd { font-weight: 500; font-size: 0.95rem; letter-spacing: 0.06em; line-height: 1.4; font-variant-numeric: tabular-nums; }
/* 年ごとの小さな写真の組。高さをそろえて横に並べる（幅は縦横比なり）。元が小さい写真（2006年ごろ）は元の大きさより大きくしない */
.pn-set { margin-top: 26px; }
.pn-set-l { margin-bottom: 9px; font-family: var(--f-label); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.16em; color: var(--fg-3); }
.pn-set-l::before { content: ""; display: inline-block; width: 18px; height: 2px; margin-right: 10px; vertical-align: middle; background: var(--red); }
.pn-set-row { display: flex; flex-wrap: wrap; gap: 6px; }
.pn-set-row .gal-ph { position: relative; display: block; flex: none; height: clamp(96px, 9vw, 132px); aspect-ratio: var(--ar); overflow: hidden; background: var(--dark-2); }
.pn-set-row .gal-ph img, .pn-e-ph .gal-ph img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.pn-set-row .gal-ph:hover img, .pn-e-ph .gal-ph:hover img { transform: scale(1.06); }
.pn-inst .gal-ph:focus-visible, .pn-ens .gal-ph:focus-visible { outline: 2px solid var(--tx-d); outline-offset: 3px; }

/* ------------------------------------------------------------ 02 アンサンブル（新しい順の表。年・日付・会・弾いた曲・写真） */
.pn-ev { border-bottom: 1px solid var(--line-d); }
.pn-e {
  position: relative; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); align-items: start;
  padding: 22px 0 24px; border-top: 1px solid var(--line-d);
}
.pn-e.is-year { border-top-color: var(--rule-strong); }
.pn-e::before { content: ""; position: absolute; left: 0; top: -1px; width: 0; height: 1px; background: var(--red); transition: width 0.5s var(--ease); }
.pn-e:hover::before { width: 100%; }
.pn-e-year { grid-column: 1 / span 1; font-family: var(--f-display); font-weight: 400; font-size: clamp(1.5rem, 2.2vw, 2rem); line-height: 1; letter-spacing: 0.01em; color: transparent; -webkit-text-stroke: 1px var(--fg-2); }
.pn-e-date { grid-column: 2 / span 2; font-family: var(--f-label); font-weight: 600; font-size: 1.1rem; letter-spacing: 0.04em; line-height: 1.5; font-variant-numeric: tabular-nums; }
.pn-e-where { grid-column: 4 / span 2; display: grid; gap: 3px; }
.pn-e-where b { justify-self: start; padding: 1px 9px 2px; border: 1px solid var(--red); font-weight: 700; font-size: 0.86rem; letter-spacing: 0.12em; line-height: 1.5; color: var(--tx-d); }
.pn-e-where span { font-size: 0.78rem; letter-spacing: 0.04em; line-height: 1.6; color: var(--fg-3); word-break: auto-phrase; }
.pn-e-pieces { grid-column: 6 / span 4; display: grid; gap: 2px; }
.pn-e-pieces li { font-weight: 500; font-size: 1rem; letter-spacing: 0.04em; line-height: 1.75; }
.pn-e-pieces small { margin-left: 10px; padding: 0 6px 1px; border: 1px solid var(--line-d); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--fg-3); vertical-align: 0.1em; }
.pn-e-ph { grid-column: 10 / -1; display: flex; justify-content: flex-end; gap: 6px; }
.pn-e-ph .gal-ph { position: relative; display: block; flex: none; height: clamp(84px, 8vw, 116px); aspect-ratio: var(--ar); overflow: hidden; background: var(--dark-2); }

/* 鍵盤の音の作者名（ライセンスの条件の表示。小さく右寄せ） */
.pn-credit { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px 12px; margin-top: 22px; font-size: 0.76rem; letter-spacing: 0.06em; line-height: 1.7; color: var(--fg-3); }
.pn-credit a { border-bottom: 1px solid var(--line-d); transition: border-color 0.2s, color 0.2s; }
.pn-credit a:hover { color: var(--fg); border-color: var(--red); }

/* ------------------------------------------------------------ 動き（動きを減らす設定では動かさない） */
@media (prefers-reduced-motion: no-preference) {
  .pn-h1-en .ch { animation: pn-flip 0.95s var(--ease) both; animation-delay: calc(0.15s + var(--c, 0) * 70ms); }
  .pn-hero .crumbs, .pn-h1-ja, .pn-lead, .pn-stats { animation: pn-fade 0.9s ease 0.55s both; }
  .pn-hero-img { animation: pn-settle 2.6s var(--ease) both; }
  /* 鍵盤の波: 開いたとき、低い音から高い音へ赤が走る */
  .pn-keys i { animation: pn-wave 0.7s ease-out both; animation-delay: calc(0.5s + var(--k) * 11ms); }
  .pn-hero [data-n] { animation: pn-fade 0.25s ease 0.3s both; }
  /* 「見えたら」: 楽器の写真は幕が開き、文字は下から。会の行は順に */
  .rv-on .pn-it.rv:not(.is-seen) .pn-it-main { clip-path: inset(0 100% 0 0); }
  .rv-on .pn-it.rv.is-seen .pn-it-main { clip-path: inset(0 0 0 0); transition: clip-path 1.2s var(--ease); }
  .rv-on .pn-it.rv:not(.is-seen) .pn-it-body > * { opacity: 0; transform: translateY(20px); }
  .rv-on .pn-it.rv.is-seen .pn-it-body > * { transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
  .rv-on .pn-it.rv.is-seen .pn-it-body > :nth-child(1) { transition-delay: 0.2s; }
  .rv-on .pn-it.rv.is-seen .pn-it-body > :nth-child(2) { transition-delay: 0.28s; }
  .rv-on .pn-it.rv.is-seen .pn-it-body > :nth-child(3) { transition-delay: 0.36s; }
  .rv-on .pn-it.rv.is-seen .pn-it-body > :nth-child(4) { transition-delay: 0.44s; }
  .rv-on .pn-it.rv.is-seen .pn-it-body > :nth-child(5) { transition-delay: 0.52s; }
  .rv-on .pn-e.rv:not(.is-seen) > * { opacity: 0; transform: translateY(16px); }
  .rv-on .pn-e.rv.is-seen > * { transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: calc(var(--i, 0) * 60ms); }
}
@keyframes pn-flip { from { opacity: 0; transform: perspective(700px) rotateX(-92deg) translateY(0.2em); } to { opacity: 1; transform: none; } }
@keyframes pn-fade { from { opacity: 0; } }
@keyframes pn-settle { from { scale: 1.06; } to { scale: 1; } }
@keyframes pn-wave { 0% { background: var(--red); } }
/* スクロールに合わせて、大きな写真が枠の中をゆっくり動く（使えるブラウザだけ） */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .pn-it-main img { animation: pn-par linear both; animation-timeline: view(); animation-range: cover 0% cover 100%; }
  }
}
@keyframes pn-par { from { translate: 0 -4%; } to { translate: 0 4%; } }

/* ------------------------------------------------------------ 中くらいの画面 */
@media (max-width: 1080px) {
  .pn-it-main, .pn-it:nth-of-type(even) .pn-it-main { grid-column: 1 / -1; grid-row: auto; }
  .pn-it-body, .pn-it:nth-of-type(even) .pn-it-body { grid-column: 1 / -1; grid-row: auto; margin-top: 26px; }
  .pn-e-year { grid-column: 1 / span 2; }
  .pn-e-date { grid-column: 3 / span 3; }
  .pn-e-where { grid-column: 6 / -1; }
  .pn-e-pieces { grid-column: 3 / -1; margin-top: 12px; }
  .pn-e-ph { grid-column: 3 / -1; justify-content: flex-start; margin-top: 14px; }
}
/* ------------------------------------------------------------ スマホ */
@media (max-width: 760px) {
  .pn-hero { --kb-h: 84px; }
  .pn-hero-img { object-position: 22% 60%; }
  .pn-hero-shade { background: linear-gradient(0deg, color-mix(in oklch, var(--scrim) 92%, transparent) 0%, color-mix(in oklch, var(--scrim) 70%, transparent) 44%, color-mix(in oklch, var(--scrim) 22%, transparent) 72%, color-mix(in oklch, var(--scrim) 50%, transparent) 100%); }
  .pn-hero-in { min-height: min(calc(100svh - var(--nav-h) - var(--kb-h)), 600px); padding-bottom: 50px; } /* 下の 50px は鍵の読み取り（.pn-read）の帯 */
  .pn-h1-en { font-size: clamp(5rem, 31vw, 8.4rem); }
  .pn-stats { gap: 12px 0; }
  .pn-stats > div { padding-right: 14px; margin-right: 14px; }
  .pn-read { bottom: calc(100% + 8px); font-size: 0.72rem; }
  .pn-it + .pn-it { margin-top: 56px; padding-top: 0; border-top: 0; }
  .pn-it-main { margin-inline: calc(var(--gutter) * -1); aspect-ratio: 3 / 2; }
  .pn-set-row .gal-ph { height: 30vw; max-height: 132px; }
  .pn-e { padding: 18px 0 20px; }
  .pn-e-year { grid-column: 1 / span 3; font-size: 1.5rem; }
  .pn-e-date { grid-column: 4 / -1; }
  .pn-e-where { grid-column: 4 / -1; margin-top: 6px; }
  .pn-e-pieces { grid-column: 4 / -1; margin-top: 10px; }
  .pn-e-ph { grid-column: 4 / -1; margin-top: 12px; }
  .pn-e-ph .gal-ph { height: 24vw; max-height: 110px; }
  .pn-credit { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { .pn-hero-img, .pn-it-main img, .pn-keys i { transition: none; } }