/* Danas Tutor — one screen, three modes.
 *
 * The rules this sheet keeps (design/Parts.dc.html):
 *   1. One accent. Mint means "now" and nothing else.
 *   2. No cards: regions are divided by a 1 px hairline, never boxed.
 *   3. Chrome earns its place — a 52 px bar, a 52 px rail, one transport.
 *   4. A control that changes while you play is on screen; one that is set
 *      once lives in the palette.
 *   5. Information is drawn on the thing it describes.
 */

@font-face {
  font-family: "Bravura";
  src: url("vendor/fonts/Bravura.woff2") format("woff2");
  font-display: block;
}

:root {
  --ground: #0E1214;         /* the screen */
  --keybed: #0A0D0E;         /* under the keys */
  --hairline: #1E2629;
  --ink: #E9EEF0;
  --quiet: #96A3A8;
  --now: #46D7A1;            /* the only accent */
  --now-dim: #24705a;
  --wrong: #E9B44C;
  --missed: #F08079;
  --left-hand: #5C9CE0;

  --serif: "InstrumentSerif", Georgia, "Times New Roman", serif;
  --sans: "InstrumentSans", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrainsMono", Consolas, "Cascadia Mono", monospace;

  --bar: 52px; --rail: 52px; --panel-w: 392px;
  --ribbon: 46px; --tape: 74px; --keys: 182px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--ground); color: var(--ink);
  font: 13.5px/1.45 var(--sans); -webkit-font-smoothing: antialiased; }
.mono, input.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
.spacer { flex: 1; }
.quiet { color: var(--quiet); }
.noscript { padding: 2em; }
::selection { background: var(--now); color: var(--keybed); }

button, select, input, textarea { font: inherit; color: var(--ink); background: transparent;
  border: 1px solid var(--hairline); border-radius: 7px; padding: 5px 10px; }
button { cursor: pointer; }
button:hover, select:hover { border-color: var(--quiet); }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--now); outline-offset: 1px; }
button.primary { background: var(--now); border-color: var(--now); color: var(--keybed); font-weight: 600; }
button.link { border: none; padding: 0; color: var(--now); text-decoration: underline; }
select { background: var(--ground); }
input[type=number] { -moz-appearance: textfield; }
input[type=number]::-webkit-inner-spin-button { opacity: 0.35; }
input.bar { width: 52px; text-align: center; padding: 4px 2px; }
input.bpm { width: 54px; text-align: center; padding: 4px 2px; }
label { white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }

.app { height: 100%; height: 100dvh; display: flex; flex-direction: column; }

/* ------------------------------------------------------------------ bar */
.bar { height: var(--bar); flex: none; display: flex; align-items: center; gap: 12px;
  padding: 0 14px; border-bottom: 1px solid var(--hairline); }
.brand { font-family: var(--serif); font-size: 19px; letter-spacing: 0.2px; }
.bar-mode { font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--quiet); }
.bar-btn { border: none; color: var(--quiet); padding: 6px 8px; border-radius: 7px; }
.bar-btn:hover { color: var(--ink); background: #141a1c; }
.kbd-btn { font-family: var(--mono); font-size: 12px; border: 1px solid var(--hairline); }
.listen { gap: 7px; font-size: 13px; color: var(--quiet); cursor: pointer; padding: 5px 10px;
  border: 1px solid var(--hairline); border-radius: 999px; }
.listen:has(input:checked) { color: var(--now); border-color: var(--now-dim); background: #0d1a17; }
.listen input { accent-color: var(--now); margin: 0; }
.bar-btn.update { color: var(--keybed); background: var(--now); border-radius: 999px; font-weight: 600;
  padding: 6px 12px; font-size: 12px; }
.bar-btn.update:hover { background: var(--ink); }
.build { font-family: var(--mono); font-size: 10.5px; color: #5d6a6e; }
#build-line { font-size: 11px; }

.heard { font-family: var(--mono); font-size: 15px; color: var(--now); min-width: 92px; text-align: right; }
.heard small { color: var(--quiet); margin-left: 5px; font-size: 11px; }

/* ----------------------------------------------------------------- body */
.body { flex: 1; display: grid; grid-template-columns: var(--rail) minmax(0, 1fr) var(--panel-w);
  min-height: 0; }
.body:has(.panel[hidden]) { grid-template-columns: var(--rail) minmax(0, 1fr); }

.rail { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 0;
  border-right: 1px solid var(--hairline); }
.rail-btn { border: none; width: 44px; padding: 7px 0; border-radius: 8px; color: var(--quiet);
  display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: 9.5px; letter-spacing: 0.3px; }
.rail-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round; }
.rail-btn:hover { color: var(--ink); background: #141a1c; }
.rail-btn.on { color: var(--now); background: #0d1a17; }

/* ---------------------------------------------------------------- stage */
/* A column, not a grid: a band that is switched off simply disappears. */
.stage { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.head, .ribbon, .tape-box, .keybed { flex: none; }
.ribbon { height: var(--ribbon); }
.tape-box { height: var(--tape); }
.keybed { height: var(--keys); }

.head { position: relative; padding: 14px 24px 10px; }
.title { font-family: var(--serif); font-size: 30px; line-height: 1.1; border: none; padding: 0;
  color: var(--ink); text-align: left; }
.title:hover { color: var(--now); }
.title::after { content: "⌄"; font-family: var(--sans); font-size: 15px; color: var(--quiet); margin-left: 9px; vertical-align: 3px; }
.meta { font-size: 10.5px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--quiet); margin-top: 5px; }
.meta b { color: var(--ink); font-weight: 500; letter-spacing: 1.2px; }
.menu { position: absolute; z-index: 20; top: 56px; left: 22px; min-width: 300px; padding: 5px;
  background: #0c1113; border: 1px solid var(--hairline); border-radius: 12px; box-shadow: 0 18px 40px rgba(0,0,0,0.55); }
.menu button { display: block; width: 100%; text-align: left; border: none; border-radius: 8px; padding: 7px 10px; }
.menu button:hover { background: #141a1c; }
.menu button.on { color: var(--now); }
.menu .lv { color: var(--quiet); font-size: 11.5px; margin-left: 8px; }

.staff-box { position: relative; flex: 1; min-height: 0; border-top: 1px solid var(--hairline); }
.score-scroll { position: absolute; inset: 0; overflow: auto; }
.trace-box { position: absolute; inset: 0; }
.trace-box > canvas { position: absolute; inset: 0; display: block; }

/* Tuner ribbon: all that is left of a second app. */
.ribbon { display: flex; align-items: center; gap: 14px; padding: 0 24px;
  border-top: 1px solid var(--hairline); background: #0b0f11; }
.r-note { font-family: var(--mono); font-weight: 500; font-size: 17px; color: var(--now); min-width: 46px; }
.r-hz, .r-cents, .r-clarity { font-size: 11.5px; color: var(--quiet); }
.r-cents { min-width: 46px; }
.r-label { font-size: 9.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--quiet); }
.r-meter-box { position: relative; width: 240px; height: 26px; }
.r-spark-box { position: relative; flex: 1; min-width: 60px; height: 26px; }
.r-meter-box > canvas, .r-spark-box > canvas { position: absolute; inset: 0; display: block; }

/* The note lane, as a tape on the staff's own x-axis. */
.tape-box { position: relative; border-top: 1px solid var(--hairline); }
.tape-box > canvas { position: absolute; inset: 0; display: block; }

.keybed { position: relative; background: var(--keybed); border-top: 1px solid var(--hairline); }
.keys-box { position: absolute; inset: 0; }
.keys-box > canvas { position: absolute; inset: 0; display: block; }

/* One floating transport, over the keybed. */
.transport { position: absolute; z-index: 5; left: 50%; transform: translateX(-50%); top: -22px;
  display: flex; align-items: center; gap: 12px; padding: 6px 14px;
  background: rgba(12, 17, 19, 0.92); border: 1px solid var(--hairline); border-radius: 26px;
  box-shadow: 0 10px 28px rgba(0,0,0,0.5); backdrop-filter: blur(6px); }
.transport .play { width: 34px; height: 34px; padding: 0; border-radius: 999px; background: var(--now);
  border: none; display: grid; place-items: center; }
.transport .play svg { width: 15px; height: 15px; fill: var(--keybed); stroke: none; }
.transport .play.playing svg { width: 13px; height: 13px; }
.pos { font-size: 12px; color: var(--ink); min-width: 96px; }
.t-group { display: inline-flex; align-items: center; gap: 7px; }
.t-note { font-family: "Bravura"; font-size: 15px; color: var(--quiet); }
.transport input[type=range] { width: 92px; accent-color: var(--now); }
.t-btn { border: 1px solid var(--hairline); border-radius: 8px; padding: 5px 7px; color: var(--quiet);
  display: grid; place-items: center; }
.t-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round; }
.t-btn.on { color: var(--now); border-color: var(--now-dim); background: #0d1a17; }
.seg { display: inline-flex; border: 1px solid var(--hairline); border-radius: 8px; overflow: hidden; }
.seg button { border: none; border-radius: 0; padding: 5px 11px; font-size: 12px; color: var(--quiet); }
.seg button + button { border-left: 1px solid var(--hairline); }
.seg button.on { color: var(--now); background: #0d1a17; }
.dash { color: var(--quiet); }

/* ---------------------------------------------------------------- panel */
.panel { border-left: 1px solid var(--hairline); min-height: 0; display: flex; flex-direction: column; }
.pane { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 10px; padding: 16px 18px; overflow: auto; }
.pane .row { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.sub { font-size: 10px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--quiet); }
.hint { margin: 0; color: var(--quiet); font-size: 12.5px; }
.hint b { color: var(--ink); font-weight: 500; }
.scroll { flex: 1; min-height: 60px; overflow: auto; }

.info h2 { font-family: var(--serif); font-size: 21px; margin: 0 0 3px; font-weight: 400; }
.info h3 { font-size: 10px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--quiet);
  margin: 16px 0 5px; font-weight: 500; }
.info p { margin: 0 0 8px; }
.info ul { margin: 0; padding-left: 17px; }
.info li { margin-bottom: 4px; }
.info .warn { color: var(--wrong); }
.hand-R { color: var(--now); } .hand-L { color: var(--left-hand); }

/* The three passes of a run: done, now, still to come. */
.passes { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--hairline); }
.passes li { display: flex; align-items: baseline; gap: 9px; padding: 7px 0;
  border-bottom: 1px solid var(--hairline); color: var(--quiet); }
.passes .n { font-family: var(--mono); font-size: 11px; width: 14px; }
.passes .name { color: var(--ink); }
.passes .say { font-size: 12px; }
.passes .mark { margin-left: auto; font-family: var(--mono); font-size: 12px; }
.passes li.done .mark { color: var(--now); }
.passes li.now { color: var(--ink); }
.passes li.now .name { color: var(--now); font-weight: 600; }
.passes li.todo .name { color: var(--quiet); }

.result { border-bottom: 1px solid var(--hairline); padding-bottom: 12px; }
.compare { display: flex; gap: 22px; }
.compare > div { flex: 1; }
.compare .score { font-size: 34px; }
.compare .cap { font-size: 10px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--quiet); }
.result .big { display: flex; align-items: baseline; gap: 11px; }
.result .score { font-family: var(--serif); font-size: 46px; line-height: 1; color: var(--now); }
.result .stars { font-size: 15px; color: var(--now); letter-spacing: 3px; }
.result .of { color: var(--quiet); font-size: 12px; }
.result .line { margin-top: 8px; font-size: 12.5px; }
.result .verdict { margin-top: 6px; color: var(--quiet); font-size: 12.5px; }
.result table { width: 100%; border-collapse: collapse; margin-top: 9px; font-size: 12px; }
.result td { padding: 2px 0; border-top: 1px solid var(--hairline); }
.result td.n { color: var(--missed); font-family: var(--mono); }
.result td.w { color: var(--wrong); font-family: var(--mono); }
.result .bars { display: flex; gap: 3px; margin-top: 9px; }
.result .barcell { flex: 1; height: 5px; background: var(--hairline); border-radius: 2px; }
.result .barcell i { display: block; height: 100%; background: var(--now); border-radius: 2px; }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th { text-align: left; font-weight: 500; color: var(--quiet); font-size: 10px; letter-spacing: 1.2px;
  text-transform: uppercase; padding: 0 6px 5px 0; position: sticky; top: 0; background: var(--ground); }
td { padding: 4px 6px 4px 0; border-top: 1px solid var(--hairline); font-family: var(--mono); font-size: 11.5px; }
#attempts tr.best td { color: var(--now); }
#ear-log td.sharp { color: var(--wrong); } #ear-log td.flat { color: var(--left-hand); }

#span { width: 84px; text-align: left; padding-left: 8px; }

#feature-list h4 { font-size: 10px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--quiet);
  margin: 14px 0 5px; font-weight: 500; }
#feature-list label { display: flex; align-items: flex-start; gap: 8px; white-space: normal;
  padding: 3px 0; font-size: 12.5px; }
#feature-list input { accent-color: var(--now); margin-top: 2px; }
#feature-list label.locked { opacity: 0.45; }

.status { height: 24px; flex: none; display: flex; align-items: center; padding: 0 16px;
  border-top: 1px solid var(--hairline); color: var(--quiet); font-size: 11.5px; }

/* ------------------------------------------------------------- overlays */
.overlay { position: fixed; inset: 0; z-index: 60; background: rgba(6, 9, 10, 0.72);
  display: grid; place-items: start center; padding: 12vh 16px 16px; }
.palette { width: min(640px, 100%); background: #0c1113; border: 1px solid var(--hairline);
  border-radius: 12px; box-shadow: 0 24px 60px rgba(0,0,0,0.6); overflow: hidden; }
.palette input { width: 100%; border: none; border-bottom: 1px solid var(--hairline); border-radius: 0;
  padding: 14px 16px; font-size: 15px; }
.palette-list { max-height: 52vh; overflow: auto; padding: 6px; }
.palette-item { display: flex; align-items: center; gap: 10px; width: 100%; border: none; border-radius: 8px;
  padding: 8px 10px; text-align: left; }
.palette-item .where { font-size: 10px; letter-spacing: 1.3px; text-transform: uppercase; color: var(--quiet); min-width: 74px; }
.palette-item .kbd { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--quiet); }
.palette-item.sel, .palette-item:hover { background: #141a1c; }
.palette-item.sel { color: var(--now); }
.palette-empty { padding: 14px 16px; color: var(--quiet); }

.sheet { width: min(1000px, 100%); height: 76vh; display: flex; flex-direction: column;
  background: #0c1113; border: 1px solid var(--hairline); border-radius: 12px; overflow: hidden; }
.sheet-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--hairline); }
/* On a phone these heads run out of room. A button that keeps its words on
 * one line and drops to a second row stays legible; one squeezed into a
 * three-line column does not. */
.sheet-head, .dialog-head { flex-wrap: wrap; row-gap: 6px; }
.sheet-head button, .dialog-head button { white-space: nowrap; }
#script { flex: 1; border: none; border-radius: 0; background: #080c0d; resize: none; padding: 12px 14px;
  font: 12.5px/1.5 var(--mono); white-space: pre; }
.report { height: 112px; margin: 0; overflow: auto; padding: 8px 14px; border-top: 1px solid var(--hairline);
  font: 11.5px/1.4 var(--mono); white-space: pre-wrap; color: var(--quiet); }
.report .warn { color: var(--wrong); } .report .err { color: var(--missed); }
.kbd { font-family: var(--mono); font-size: 11px; color: var(--quiet); }

.diag-body { padding: 12px 16px 16px; overflow: auto; max-height: calc(80vh - 52px); }
.meter-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.level { flex: 1; height: 10px; border-radius: 5px; background: #141a1c; overflow: hidden; }
.level i { display: block; height: 100%; width: 0; background: var(--now); transition: width 0.08s linear; }
#diag-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
#diag-table td { padding: 4px 8px 4px 0; border-top: 1px solid var(--hairline); vertical-align: top; }
#diag-table td:first-child { color: var(--quiet); width: 42%; }
#diag-table td.bad { color: var(--missed); }
#diag-table td.good { color: var(--now); }

dialog { background: #0c1113; color: var(--ink); border: 1px solid var(--hairline); border-radius: 12px;
  width: min(880px, 92vw); height: 80vh; padding: 0; }
dialog::backdrop { background: rgba(6, 9, 10, 0.72); }
.dialog-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px;
  border-bottom: 1px solid var(--hairline); }
#help-text { margin: 0; padding: 14px; overflow: auto; height: calc(100% - 46px);
  font: 12.5px/1.55 var(--mono); white-space: pre-wrap; }

/* ------------------------------------------------------------ score SVG */
.score { display: block; }
.score .bg { fill: transparent; }
.score .staff { stroke: #2b373b; stroke-width: 0.1; }
.score .bar { stroke: #6e7d82; stroke-width: 0.14; }
.score .bar.thick { stroke-width: 0.45; }
.score .brace { stroke: #6e7d82; stroke-width: 0.35; }
.score .ledger { stroke: #6e7d82; stroke-width: 0.12; }
.score .music { font-family: "Bravura"; font-size: 4px; fill: var(--ink); }
.score .stem line { stroke: var(--ink); stroke-width: 0.13; stroke-linecap: round; }
.score .stem .music { fill: var(--ink); }
.score .tie { fill: var(--ink); stroke: var(--ink); stroke-width: 0.08; }
.score .label { font-family: var(--sans); fill: var(--ink); }
.score .label.bold { font-weight: 600; } .score .label.italic { font-style: italic; }
.score .label.small { fill: var(--quiet); }
.score .finger { font-family: var(--mono); fill: var(--quiet); font-size: 1.3px; }
.score .finger.written { fill: var(--ink); font-weight: 500; }
.score .note.on .head { fill: var(--now); }
.score.dim-R .note.hand-R .head, .score.dim-R .finger.hand-R,
.score.dim-L .note.hand-L .head, .score.dim-L .finger.hand-L { fill: #3a4548; }
.score .note.miss .head { fill: var(--missed) !important; }
.score .note.wrong .head { fill: var(--wrong) !important; }
.score .cursor { stroke: var(--now); stroke-width: 0.16; }
.score .measure-hit { fill: transparent; cursor: pointer; }
.score .measure-hit:hover { fill: rgba(70, 215, 161, 0.05); }

/* --------------------------------------------------------------- splash */
.splash { position: fixed; inset: 0; z-index: 80; background: #000; display: flex;
  align-items: center; justify-content: center; }
.splash > * { position: absolute; width: min(720px, 96vw); left: 50%; transform: translateX(-50%); }
.splash-photo { top: 50%; margin-top: -295px; height: 470px;
  background: #000 url("assets/tutor_splash.jpg") center 42% / cover no-repeat; }
.splash-photo::after { content: ""; position: absolute; inset: auto 0 0 0; height: 110px;
  background: linear-gradient(transparent, #000); }
.splash-version { top: 50%; margin-top: -280px; text-align: right; padding-right: 16px;
  color: var(--quiet); font-size: 11.5px; text-shadow: 0 0 6px #000; font-family: var(--mono); }
.splash-version b { display: block; color: #fff; font-size: 13px; }
.splash-version span { display: block; }
.splash-band { top: 50%; margin-top: 170px; padding: 0 30px; color: var(--quiet); }
.splash-band h1 { font-family: var(--serif); font-weight: 400; margin: 0 0 7px; color: #fff; font-size: 36px; }
.splash-band p { margin: 0 0 15px; font-size: 13px; }
.splash-progress { height: 3px; background: #1a1f21; border-radius: 2px; overflow: hidden; }
.splash-progress div { height: 100%; width: 0; background: var(--now); transition: width 0.3s; }
.splash-foot { display: flex; justify-content: space-between; margin-top: 9px; font-size: 11px; color: #5d6a6e; }
.splash.ready { cursor: pointer; }
.splash.ready #splash-status { color: var(--now); }
@media (max-height: 640px) {
  .splash-photo { height: 300px; margin-top: -240px; }
  .splash-band { margin-top: 70px; } .splash-version { margin-top: -230px; }
}

/* ------------------------------------------------------- narrow screens */
@media (max-width: 1100px) {
  :root { --panel-w: 320px; }
  .title { font-size: 25px; }
}

/* Under 900 px the panel stops taking a column and slides over the stage. */
@media (max-width: 900px) {
  .body { grid-template-columns: var(--rail) minmax(0, 1fr); }
  .panel { position: fixed; z-index: 30; right: 0; top: var(--bar); bottom: 24px; width: min(380px, 86vw);
    background: var(--ground); box-shadow: -18px 0 40px rgba(0,0,0,0.5); }
  .app:not([data-panel="open"]) .panel { display: none; }
  .transport { gap: 8px; padding: 5px 10px; }
  .pos { min-width: 74px; }
}

/* ------------------------------------------------------------- touch */
/* A finger needs 40 px; a mouse does not. */
@media (pointer: coarse) {
  .rail-btn, .bar-btn, .t-btn, .seg button, .menu button, .palette-item { min-height: 40px; }
  .t-btn, .bar-btn { min-width: 40px; }
  .transport .play { width: 42px; height: 42px; }
  canvas, .score, .keybed { touch-action: manipulation; }
  .rail, .bar, .transport { user-select: none; -webkit-user-select: none; }
}

/* ---------------------------------------------------------- phone: tall */
@media (max-width: 640px) {
  :root { --bar: 48px; --rail: 0px; --ribbon: 42px; --tape: 52px; --keys: 188px; }

  .bar { gap: 8px; padding: 0 10px 0 12px; }
  .brand { display: none; }
  .bar-mode { font-size: 10px; letter-spacing: 1.2px; }
  .listen span { display: none; }              /* the tick is the label */
  .listen { padding: 8px 10px; }
  .heard { font-size: 13px; min-width: 66px; }

  /* The rail becomes a bottom bar, where a thumb reaches it. */
  .body { grid-template-columns: minmax(0, 1fr); padding-bottom: calc(56px + env(safe-area-inset-bottom)); }
  .rail { position: fixed; z-index: 40; left: 0; right: 0; bottom: 0;
    flex-direction: row; justify-content: space-around; align-items: center;
    height: calc(56px + env(safe-area-inset-bottom)); padding: 0 4px env(safe-area-inset-bottom);
    border-right: none; border-top: 1px solid var(--hairline); background: #0b0f11; }
  .rail .spacer { display: none; }
  .rail-btn { width: auto; flex: 1; max-width: 96px; padding: 6px 0; font-size: 10px; }

  /* The panel is a sheet over the stage, above the bottom rail. */
  .panel { top: auto; bottom: calc(56px + env(safe-area-inset-bottom)); right: 0; left: 0;
    width: 100%; max-height: 62vh; border-left: none; border-top: 1px solid var(--hairline);
    border-radius: 14px 14px 0 0; box-shadow: 0 -18px 40px rgba(0,0,0,0.55); }
  .panel::before { content: ""; display: block; width: 36px; height: 4px; margin: 8px auto 0;
    border-radius: 2px; background: var(--hairline); }
  .pane { padding: 10px 14px 14px; }

  .head { padding: 10px 14px 8px; }
  .title { font-size: 21px; }
  .title::after { font-size: 12px; margin-left: 6px; }
  .meta { font-size: 9.5px; letter-spacing: 1px; margin-top: 3px; }
  .menu { left: 12px; right: 12px; min-width: 0; top: 46px; }

  .ribbon { gap: 8px; padding: 0 12px; }
  .r-meter-box { width: 96px; }
  .r-hz, .r-label, .r-spark-box { display: none; }

  /* No room to float over the keys: the transport takes its own row above
     them, and scrolls sideways when its seven controls do not fit. */
  .keybed { display: flex; flex-direction: column; background: none; border-top: none; }
  .keys-box { position: relative; flex: 1; min-height: 0; border-top: 1px solid var(--hairline);
    background: var(--keybed); }
  .transport { position: static; transform: none; flex: none; margin: 0 8px 5px; gap: 8px;
    padding: 5px 8px; justify-content: flex-start; overflow-x: auto; scrollbar-width: none;
    border-radius: 22px; }
  .transport::-webkit-scrollbar { display: none; }
  .transport > * { flex: none; }
  .pos { min-width: 0; font-size: 11px; }
  .transport input[type=range] { width: 64px; }
  input.bpm { width: 46px; }
  input.bar { width: 42px; }

  .status { display: none; }                   /* the panel and bar carry the news */
  .overlay { padding: 8vh 10px 10px; }
  .sheet { height: 82vh; }
  .splash-photo { height: 320px; margin-top: -250px; }
  .splash-band { margin-top: 80px; padding: 0 18px; }
  .splash-band h1 { font-size: 27px; }
}

/* ------------------------------------------------------- phone: on its side */
@media (max-height: 520px) and (orientation: landscape) {
  :root { --bar: 42px; --rail: 46px; --ribbon: 38px; --tape: 48px; --keys: 104px; }

  .brand { display: none; }
  .rail-btn span { display: none; }            /* icons only; the bar names the mode */
  .rail-btn svg { width: 19px; height: 19px; }
  .rail-btn { width: 40px; padding: 9px 0; }

  .head { padding: 6px 14px 4px; }
  .title { font-size: 17px; }
  .meta { display: none; }                     /* the lesson panel has it all */
  .menu { top: 34px; }

  .panel { top: var(--bar); bottom: 0; width: min(330px, 60vw); }
  .pane { padding: 10px 14px; }
  .transport { top: -18px; padding: 4px 10px; gap: 8px; }
  .transport .play { width: 30px; height: 30px; }
  .status { display: none; }
  .splash-photo { height: 210px; margin-top: -170px; }
  .splash-band { margin-top: 40px; }
  .splash-band h1 { font-size: 22px; }
  .splash-band p { margin-bottom: 8px; font-size: 12px; }
}

/* ---------------------------------------------------------------- print */
@media print {
  body { background: #fff; }
  .app, .splash, .overlay, dialog { display: none !important; }
  #print { display: block; }
  .print-page { break-after: page; padding: 0; }
  .print-page:last-child { break-after: auto; }
  .score.print .staff, .score.print .ledger { stroke: #555; }
  .score.print .bar, .score.print .brace, .score.print .stem line { stroke: #000; }
  .score.print .tie { fill: #000; stroke: #000; }
  .score.print .music, .score.print .label, .score.print .finger, .score.print .stem .music {
    fill: #000; stroke: none; }
  .score.print .label.small { fill: #444; }
  .handout { font: 11pt/1.45 var(--sans); color: #000; margin-top: 14pt; }
  .handout h3 { font-size: 10pt; letter-spacing: 1.2px; text-transform: uppercase; color: #444;
    margin: 12pt 0 4pt; }
  .handout p { margin: 0 0 5pt; }
}
#print { display: none; }