/* Sbor (/choir): jediný styl stránky (choir spec 9.3, web spec 4.4, balík CH-C).
   Nativní strategie: rozložení jen přes @container hl-frame (...) a atributy rámu
   .hl-frame[data-device|data-orient|data-input]; žádný @media na rozměr, žádné jednotky okna,
   žádné position: fixed, žádný top layer. Kořen .ch vyplní rám přesně, stránka se neposouvá
   (posouvá se jen rail nebo list nastavení). Výchozí pravidla = telefon na výšku. */

/* ── tokeny: 8 barev partů od fialové přes zlatou k červené (4.2), hluboké vlevo ── */
.ch {
  --ch-part-0: #B488FF; --ch-part-1: #C894D3; --ch-part-2: #DCA0A6; --ch-part-3: #EEAC78;
  --ch-part-4: #FFB84A; --ch-part-5: #FF953E; --ch-part-6: #FF7132; --ch-part-7: #FF4E26;
  --accent: var(--h2);
  --ch-line: rgba(244,239,230,0.14);
  --ch-btn: rgba(244,239,230,0.06);
  --ch-dock: #07070F;
  --ch-tr: 56px;                     /* výška řádku dopravy (Record je kulaté 56 px) */
}

/* ── kořen: mřížka přes celý rám ── */
.ch.exp {
  position: absolute; inset: 0;
  display: grid;
  grid-template-areas: "stage" "timeline" "dock";
  grid-template-rows: minmax(0, 1fr) auto auto;
  grid-template-columns: minmax(0, 1fr);
  padding: 0; border: 0; margin: 0;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  -webkit-user-select: none; user-select: none;
}
.ch button { font: inherit; color: inherit; }
.ch [hidden] { display: none !important; }

/* ── scéna ── */
.ch-stage {
  grid-area: stage; position: relative; min-width: 0; min-height: 0; overflow: hidden;
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  padding: 10px 12px;
  background: radial-gradient(90% 60% at 50% 100%, rgba(255,184,74,0.05), transparent 70%), var(--ink);
}
#chCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: crosshair; }
#chCanvas:focus-visible { outline: 2px solid var(--h2); outline-offset: -3px; border-radius: 0; }
.ch-readout, .ch-caption { position: relative; z-index: 1; pointer-events: none; max-width: calc(100% - 52px); }
.ch-readout { display: flex; flex-direction: column; gap: 2px; }
.ch-chord { font-family: var(--display); font-weight: 900; font-size: 22px; line-height: 1.05; letter-spacing: -0.01em; min-height: 1.05em; }
.ch-colour { font-size: 13px; font-style: italic; color: var(--paper-mute); min-height: 1.3em; }
.ch-caption { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--paper-dim); margin-top: 2px; }
.ch-hint {
  position: absolute; left: 50%; bottom: 52px; z-index: 1; transform: translateX(-50%);
  width: max-content; max-width: calc(100% - 24px); padding: 5px 12px; border-radius: 100px;
  background: rgba(5,5,16,0.62); text-align: center; font-size: 13px; line-height: 1.35; color: var(--paper);
  pointer-events: none; transition: opacity 0.4s;
}
.ch-hint[data-off] { opacity: 0; }
.ch-showme {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 2;
  min-height: 44px; padding: 0 22px; border-radius: 100px;
  border: 1px dashed rgba(244,239,230,0.45); background: rgba(5,5,16,0.6);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
}
.ch-card {
  position: absolute; inset: 8px; z-index: 3; overflow: auto;
  padding: 16px; border-radius: 16px;
  background: var(--ink-soft); border: 1px solid var(--ch-line);
  -webkit-user-select: text; user-select: text;
}
.ch-fatal { position: relative; z-index: 2; margin-top: 12px; }

/* pás Swell v Parts: 44 px vpravo přes celou výšku pásu tónů (4.1) */
.ch-swell {
  position: absolute; right: 0; top: 8%; bottom: 8%; width: 44px; z-index: 2;
  touch-action: none; cursor: ns-resize;
  display: flex; flex-direction: column; justify-content: space-between; align-items: center;
  padding: 4px 0; border-left: 1px solid var(--ch-line);
  background: linear-gradient(to top, rgba(244,239,230,0.02), rgba(244,239,230,0.08));
  font-family: var(--mono); font-size: 10px; color: var(--paper-dim);
}
.ch-swell-fill {
  position: absolute; left: 8px; right: 8px; bottom: 0; height: calc(var(--lvl, 0.6) * 100%);
  border-radius: 6px 6px 0 0; background: rgba(255,184,74,0.22); pointer-events: none;
}
.ch-swell-ff, .ch-swell-pp { position: relative; z-index: 1; }
.ch-swell:focus-visible { outline: 2px solid var(--h2); outline-offset: -2px; }

/* přístupné dvojče (4.3): vždy v DOM, vidět při fokusu z klávesnice nebo s Show part sliders */
.ch-a11y:not(:focus-within) {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
.ch[data-sliders] .ch-a11y, .ch-a11y:focus-within {
  position: absolute; left: 8px; right: 52px; bottom: 8px; z-index: 3;
  width: auto; height: auto; clip: auto; max-height: 62%; overflow: auto;
  display: grid; gap: 6px; padding: 10px; border-radius: 14px;
  background: rgba(12,12,26,0.92); border: 1px solid var(--ch-line);
}
.ch-a11y-part { display: flex; align-items: center; gap: 8px; }
.ch-a11y-part input { flex: 1 1 auto; min-width: 0; accent-color: var(--h2); min-height: 32px; }
.ch-a11y-hush { flex: none; min-height: 36px; padding: 0 12px; border-radius: 100px; border: 1px solid var(--ch-line); background: var(--ch-btn); font-size: 12px; white-space: nowrap; }

/* ── časová osa: stuha nahrávky nebo pás písničky (7.4, 5.3) ── */
.ch-timeline {
  grid-area: timeline; position: relative; min-width: 0;
  display: flex; align-items: center; gap: 8px;
  height: 28px; padding: 0 8px 0 12px;
  border-top: 1px solid var(--ink-rule); background: var(--ch-dock);
}
#chRibbon { flex: 1 1 auto; min-width: 0; height: 100%; display: block; }
.ch-time { flex: none; font-family: var(--mono); font-size: 11px; color: var(--paper-mute); font-variant-numeric: tabular-nums; }
.ch-takemenu { flex: none; position: static; }
.ch-takemenu > summary { list-style: none; cursor: pointer; }
.ch-takemenu > summary::-webkit-details-marker { display: none; }
.ch-takemenu-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 26px; border-radius: 100px; }
.ico.dots { width: 16px; height: 4px; background: radial-gradient(circle, currentColor 1.6px, transparent 2px) 0 50% / 6px 4px repeat-x; }
.ch-takemenu-list {
  position: absolute; right: 8px; bottom: calc(100% + 6px); z-index: 6;
  display: flex; flex-direction: column; gap: 4px; min-width: 220px; max-width: calc(100% - 16px);
  padding: 8px; border-radius: 14px; background: var(--ink-soft); border: 1px solid var(--ch-line);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.ch-item { text-align: left; min-height: 40px; padding: 0 12px; border-radius: 10px; }
.ch-item:hover { background: var(--ch-btn); }
.ch-msg { margin-top: 4px; font-size: 13px; }

/* ── dok ── */
.ch-dock {
  grid-area: dock; min-width: 0; position: relative;
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px;
  padding: 8px 12px 10px;
  border-top: 1px solid var(--ink-rule); background: var(--ch-dock);
  touch-action: manipulation;
}
.ch-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
.ch-tab {
  min-height: 44px; border-radius: 10px; border: 1px solid var(--ch-line); background: transparent;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--paper-mute);
}
.ch-tab[aria-selected="true"] { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.ch-surface { min-width: 0; }
.ch-surface > [data-for] { display: none; }
.ch[data-tab="chords"] .ch-surface > [data-for="chords"],
.ch[data-tab="parts"] .ch-surface > [data-for="parts"],
.ch[data-tab="song"] .ch-surface > [data-for="song"] { display: grid; }

/* pady: 7 v řadě, pod 368 px rámu 4 + 3 (5.1) */
.ch-pads { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.ch-pad {
  position: relative; height: 60px; padding: 4px 2px; min-width: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  border-radius: 12px; border: 1px solid var(--ch-line); background: var(--ch-btn);
  touch-action: manipulation; -webkit-touch-callout: none;
}
.ch-pad[aria-pressed="true"] { border-color: var(--h2); background: rgba(255,184,74,0.14); }
.ch-pad:active { transform: translateY(1px); }
.ch-pad-num { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; color: var(--paper-dim); }
.ch-pad-name { font-family: var(--display); font-weight: 900; font-size: 16px; line-height: 1; white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.ch-pad-full { display: none; }
.ch-pad kbd { display: none; position: absolute; right: 6px; bottom: 4px; font: 500 10px/1 var(--mono); color: var(--paper-dim); }

/* čipy partů: písmeno a znějící tón, ťuknutí vybere, dlouhý stisk ztlumí (5.2) */
.ch-chips { grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 6px; }
.ch-chip-part {
  height: 60px; min-width: 0; padding: 4px 2px; border-radius: 12px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  border: 1px solid var(--ch-line); background: var(--ch-btn);
  border-top: 3px solid var(--c, var(--paper-dim));
  touch-action: manipulation; -webkit-touch-callout: none;
}
.ch-chip-id { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.04em; }
.ch-chip-note { font-family: var(--display); font-weight: 900; font-size: 15px; color: var(--paper-mute); }
.ch-chip-part[data-sounding] .ch-chip-note { color: var(--paper); }
.ch-chip-part[aria-pressed="true"] { background: rgba(244,239,230,0.16); border-color: var(--paper-mute); border-top-color: var(--c, var(--paper)); }
.ch-chip-part[data-muted] { opacity: 0.4; }
.ch-songbar { grid-template-columns: minmax(0, 1fr); gap: 6px; min-height: 60px; align-content: center; }

/* doprava: [Hush] [Record] [Play] [More] (7.8) */
.ch-transport { display: flex; align-items: center; gap: 8px; min-height: var(--ch-tr); }
.ch-btn {
  flex: 1 1 0; min-width: 0; min-height: 44px; padding: 0 10px; border-radius: 100px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--ch-line); background: var(--ch-btn);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap;
}
.ch-btn .lbl { overflow: hidden; text-overflow: ellipsis; }
/* Play je pod počítačem jen ikonou jako Record (česky „Přehrát“ by se ořízlo); popisek zůstává pro čtečku */
#chPlay .lbl { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hl-frame[data-device="desktop"] #chPlay .lbl { position: static; width: auto; height: auto; overflow: hidden; clip: auto; }
.ch-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ch-btn[aria-expanded="true"] { background: var(--paper); color: var(--ink); }
.ch-btn .ico.play { width: 0; height: 0; border-left: 9px solid currentColor; border-top: 5.5px solid transparent; border-bottom: 5.5px solid transparent; }
.ch-btn .ico.stop { width: 10px; height: 10px; background: currentColor; border-radius: 2px; }
.ch-rec {
  flex: none; width: 56px; height: 56px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: #FF4E26; border: 3px solid rgba(244,239,230,0.18);
  box-shadow: 0 0 0 4px rgba(255,78,38,0.12);
}
.ch-rec .ico.rec { width: 18px; height: 18px; border-radius: 50%; background: var(--paper); }
.ch-rec[aria-pressed="true"] .ico.rec, .ch[data-recording] .ch-rec .ico.rec { border-radius: 4px; }
.ch[data-recording] .ch-rec { box-shadow: 0 0 0 6px rgba(255,78,38,0.3); }
.ch-quick { display: none; gap: 8px; flex-wrap: wrap; }
.ch-chip {
  min-height: 40px; padding: 0 14px; border-radius: 100px; border: 1px solid var(--ch-line); background: var(--ch-btn);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; white-space: nowrap;
}

/* ── nastavení (9.4): jeden DOM, tři umístění ── */
.ch-settings, .ch-help {
  display: none; flex-direction: column; min-width: 0; min-height: 0;
  background: #10101C; border: 1px solid var(--ch-line); z-index: 5;
  -webkit-user-select: text; user-select: text;
}
.ch[data-sheet="settings"] .ch-settings, .ch[data-sheet="help"] .ch-help { display: flex; }
.ch-set-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 10px 6px 16px; border-bottom: 1px solid var(--ink-rule); }
.ch .ch-set-title { margin: 0; font-family: var(--mono); font-weight: 500; font-size: 11px; line-height: 1.3; letter-spacing: 0.16em; text-transform: uppercase; color: var(--paper-mute); }
.ch-close { min-width: 44px; min-height: 44px; border-radius: 50%; font-size: 22px; line-height: 1; background: transparent; }
.ch-set-body { overflow: auto; overscroll-behavior: contain; padding: 4px 16px 16px; flex: 1 1 auto; min-height: 0; }
.ch-set { padding: 14px 0; border-bottom: 1px solid var(--ink-rule); display: flex; flex-direction: column; gap: 12px; }
.ch-set:last-child { border-bottom: 0; }
/* sekce Song je v nastavení jen v záložce Song (9.4) */
.ch:not([data-tab="song"]) .ch-set[data-for="song"] { display: none; }
.ch-set h3 { font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--h2); }
.ch-field { display: flex; flex-direction: column; gap: 6px; }
.ch-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--paper-dim); }
.ch-note { font-size: 12.5px; line-height: 1.45; color: var(--paper-mute); }
.ch-note:empty { display: none; }
.ch-note a { text-decoration: underline; text-underline-offset: 3px; }
.ch-seg { display: flex; flex-wrap: wrap; gap: 6px; }
.ch-toggle { align-self: flex-start; }
.ch-seg button, .ch-toggle {
  min-height: 36px; padding: 0 12px; border-radius: 100px; border: 1px solid var(--ch-line); background: var(--ch-btn);
  font-size: 13px; white-space: nowrap;
}
.ch-seg button[aria-pressed="true"], .ch-toggle[aria-pressed="true"] { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.ch-seg button[aria-disabled="true"] { opacity: 0.4; }
.ch-seg button[data-heavy] { text-decoration: line-through; }
.ch-keys { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
.ch-keys button { padding: 0 4px; font-family: var(--display); font-weight: 900; }
.ch-slider { display: flex; flex-direction: column; gap: 4px; }
.ch-slider input { width: 100%; accent-color: var(--h2); min-height: 28px; }
.ch-lock { color: var(--h1); }
/* party a rytmus (balík RX): řádek na part, jméno v barvě partu, dva výběry (zvuk, role) pod palcem */
.ch-parthead, .ch-partrow { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 6px; align-items: center; }
.ch-partrows { display: flex; flex-direction: column; gap: 6px; }
.ch-partname {
  min-width: 0; padding-left: 9px; border-left: 3px solid var(--c, var(--paper-dim));
  font-size: 13px; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ch-select {
  -webkit-appearance: none; appearance: none; width: 100%; min-width: 0; min-height: 36px; padding: 0 24px 0 12px;
  border-radius: 100px; border: 1px solid var(--ch-line); color: var(--paper); font: inherit; font-size: 13px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer;
  background-color: var(--ch-btn);
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 15px) 52%, calc(100% - 10px) 52%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.ch-select option, .ch-select optgroup { background: var(--ink); color: var(--paper); }
.ch-select:disabled { opacity: 0.35; cursor: default; }
.ch-select:focus-visible { outline: 2px solid var(--h2); outline-offset: 1px; }
.ch-partrow[data-rhythm] .ch-select[data-what="role"] { border-color: var(--h2); background-color: rgba(255,184,74,0.14); }
.ch-tempo-val { color: var(--paper-mute); letter-spacing: 0.06em; }
.ch-help .ch-set-body p { font-size: 14px; line-height: 1.5; color: var(--paper-mute); margin-top: 10px; }
.ch-help .ch-set-body h3 { margin-top: 16px; font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--h2); }
.ch-keylegend kbd { display: inline-block; min-width: 1.6em; padding: 1px 5px; margin: 1px 0; border-radius: 5px; border: 1px solid var(--ch-line); font: 500 11px/1.4 var(--mono); text-align: center; color: var(--paper); }

/* telefon na výšku: list nastavení přes scénu, dok i doprava zůstávají vidět a hrají (9.3) */
.ch[data-sheet] .ch-settings, .ch[data-sheet] .ch-help {
  grid-row: 1 / 3; grid-column: 1; align-self: end; height: 82%;
  border-radius: 18px 18px 0 0; border-bottom: 0;
  box-shadow: 0 -16px 40px rgba(0,0,0,0.55);
}

/* ── pod 368 px šířky rámu se pady lámou 4 + 3 (5.1) ── */
@container hl-frame (max-width: 367px) {
  .ch-pads { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .ch-pad { height: 52px; }
  .ch-btn { letter-spacing: 0.06em; padding: 0 6px; }
}
/* od 480 px šířky rámu celé jméno akordu na padu (E♭maj7), pod tím jen základ (E♭, Fm) */
@container hl-frame (min-width: 480px) {
  .ch-pad-full { display: inline; }
  .ch-pad-short { display: none; }
}

/* ── telefon na šířku: scéna vlevo, dok jako pravý sloupec 232 px (9.3) ── */
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch.exp {
  grid-template-areas: "stage dock" "timeline dock";
  grid-template-rows: minmax(0, 1fr) auto;
  grid-template-columns: minmax(0, 1fr) 232px;
}
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-dock {
  border-top: 0; border-left: 1px solid var(--ink-rule);
  align-content: space-between; gap: 6px; padding: 8px 10px 10px; overflow: hidden;
}
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-pads { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-pad,
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-chip-part { height: 46px; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-chips { grid-auto-flow: row; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-pad .ch-pad-full { display: none; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-pad .ch-pad-short { display: inline; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-transport { --ch-tr: 52px; gap: 6px; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-rec { width: 48px; height: 48px; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-btn { padding: 0 4px; letter-spacing: 0.04em; font-size: 10px; }

.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-tab { font-size: 10px; letter-spacing: 0.06em; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch-hint { bottom: 40px; }
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch[data-sheet] .ch-settings,
.hl-frame[data-device="mobile"][data-orient="landscape"] .ch[data-sheet] .ch-help {
  grid-row: 1 / 3; grid-column: 1; align-self: stretch; justify-self: end; height: auto;
  width: min(340px, 100%); border-radius: 0; border-top: 0; border-bottom: 0;
}

/* ── tablet: scéna nad dvousloupcovým dokem, 6 rychlých čipů, šuplík 360 px (9.3) ── */
.hl-frame[data-device="tablet"] .ch-dock {
  grid-template-areas: "tabs transport" "surface transport" "quick quick";
  grid-template-columns: minmax(0, 1fr) clamp(240px, 30cqw, 300px); gap: 10px 16px; padding: 12px 18px 12px;
}
.hl-frame[data-device="tablet"] .ch-tabs { grid-area: tabs; max-width: 440px; }
.hl-frame[data-device="tablet"] .ch-surface { grid-area: surface; }
.hl-frame[data-device="tablet"] .ch-transport { grid-area: transport; align-self: end; --ch-tr: 72px; display: grid; grid-template-columns: 1fr auto 1fr; grid-template-rows: auto auto; gap: 8px; }
.hl-frame[data-device="tablet"] .ch-transport .ch-rec { grid-row: 1 / 3; grid-column: 2; width: 72px; height: 72px; }
.hl-frame[data-device="tablet"] .ch-quick { grid-area: quick; display: flex; }
.hl-frame[data-device="tablet"] .ch-pad, .hl-frame[data-device="tablet"] .ch-chip-part { height: 72px; }
.hl-frame[data-device="tablet"] .ch-pad-name { font-size: 14px; letter-spacing: -0.02em; }
.hl-frame[data-device="tablet"] .ch-chord { font-size: 30px; }
.hl-frame[data-device="tablet"] .ch-timeline { height: 40px; }
.hl-frame[data-device="tablet"] .ch[data-sheet] .ch-settings,
.hl-frame[data-device="tablet"] .ch[data-sheet] .ch-help {
  grid-row: 1 / 3; grid-column: 1; align-self: stretch; justify-self: end; height: auto;
  width: min(360px, 100%); border-radius: 0; border-top: 0; border-bottom: 0;
}

/* ── počítač: scéna a dok vlevo, rail nastavení vpravo pořád otevřený, More skryté (9.3) ── */
.hl-frame[data-device="desktop"] .ch.exp {
  grid-template-areas: "stage rail" "timeline rail" "dock rail";
  grid-template-rows: minmax(0, 1fr) auto auto;
  grid-template-columns: minmax(0, 1fr) clamp(300px, 26cqw, 360px);
}
.hl-frame[data-device="desktop"] .ch-settings {
  display: flex; grid-area: rail; border: 0; border-left: 1px solid var(--ink-rule); background: var(--ink-soft);
}
.hl-frame[data-device="desktop"] .ch-settings .ch-close { display: none; }
.hl-frame[data-device="desktop"] .ch-dock {
  grid-template-areas: "tabs transport" "surface transport";
  grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 8px 18px; padding: 10px 18px 12px;
}
.hl-frame[data-device="desktop"] .ch-tabs { grid-area: tabs; max-width: 380px; }
.hl-frame[data-device="desktop"] .ch-tab { min-height: 34px; }
.hl-frame[data-device="desktop"] .ch-surface { grid-area: surface; }
.hl-frame[data-device="desktop"] .ch-transport { grid-area: transport; --ch-tr: 72px; }
.hl-frame[data-device="desktop"] .ch-transport .ch-btn { flex: none; min-width: 92px; min-height: 48px; }
.hl-frame[data-device="desktop"] .ch-transport .ch-rec { width: 72px; height: 72px; }
.hl-frame[data-device="desktop"] #chMore { display: none; }
.hl-frame[data-device="desktop"] .ch-pad, .hl-frame[data-device="desktop"] .ch-chip-part { height: 72px; }
.hl-frame[data-device="desktop"] .ch-pad-name { font-size: 20px; }
.hl-frame[data-device="desktop"] .ch-chord { font-size: 34px; }
.hl-frame[data-device="desktop"] .ch-colour { font-size: 14px; }
.hl-frame[data-device="desktop"] .ch-timeline { height: 56px; }
.hl-frame[data-device="desktop"][data-input="mouse"] .ch-pad kbd { display: block; }
.hl-frame[data-device="desktop"] .ch[data-sheet="help"] .ch-help {
  grid-row: 1 / 3; grid-column: 1; align-self: stretch; justify-self: end; height: auto;
  width: min(440px, 100%); border-radius: 0; border-top: 0; border-bottom: 0;
}

/* ── dotyk: cíle aspoň 44 x 44 px v každém rozložení (9.3), i na desktopovém rozložení iPadu ── */
.hl-frame[data-input="touch"] .ch button,
.hl-frame[data-input="touch"] .ch summary,
.hl-frame[data-input="touch"] .ch [role="slider"] { min-height: 44px; min-width: 44px; }
.hl-frame[data-input="touch"] .ch-takemenu-btn { height: 44px; }
.hl-frame[data-input="touch"] .ch-pad kbd { display: none; }
.hl-frame[data-input="touch"] .ch-seg button, .hl-frame[data-input="touch"] .ch-toggle { min-height: 44px; }
/* výběry na dotyku: 44 px a písmo 16 px (iOS jinak při ťuknutí přibližuje stránku) */
.hl-frame[data-input="touch"] .ch-select { min-height: 44px; font-size: 16px; }

/* ── pohyb jen na přání (mediální dotaz na preferenci zůstává mediální) ── */
@media (prefers-reduced-motion: reduce) {
  .ch-hint { transition: none; }
  .ch-pad:active { transform: none; }
}
@media (hover: hover) {
  .ch-pad:hover, .ch-chip-part:hover, .ch-btn:hover, .ch-seg button:hover, .ch-chip:hover { border-color: rgba(244,239,230,0.4); }
}