:root{color-scheme:light;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
/* Layout: a sticky "session" transport bar; tune entry on the left, the lead-sheet chart and the band mixer on the right; one column on phones. */
:root{
  --bg:#EBEFE8; --surface:#F7F9F4; --sunk:#E1E7DF; --ink:#16221D; --muted:#56665D; --line:#C6D0C7;
  --accent:#1D6A51; --accent-ink:#F3FAF6; --gorse:#C99212; --gorse-soft:#F4E3AE; --danger:#A33A2D;
  --display:'Uncial Antiqua', 'Book Antiqua', Georgia, serif;
  --body:'Alegreya Sans', 'Segoe UI', system-ui, sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --r:10px;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0E1512; --surface:#16201B; --sunk:#0A100D; --ink:#E1E9E3; --muted:#91A198; --line:#2A3932;
  --accent:#5BBD97; --accent-ink:#08130E; --gorse:#E8BD4A; --gorse-soft:#3A3116; --danger:#E57C6D; color-scheme:dark } }
:root[data-theme="dark"]{
  --bg:#0E1512; --surface:#16201B; --sunk:#0A100D; --ink:#E1E9E3; --muted:#91A198; --line:#2A3932;
  --accent:#5BBD97; --accent-ink:#08130E; --gorse:#E8BD4A; --gorse-soft:#3A3116; --danger:#E57C6D; color-scheme:dark }

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.45}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
.wrap{max-width:1240px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h2{font-family:var(--display);font-weight:400;font-size:1.45rem;margin:0;letter-spacing:.01em;text-wrap:balance}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* transport */
.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--surface);border-bottom:1px solid var(--line)}
.top-inner{display:flex;align-items:center;gap:14px 24px;flex-wrap:wrap;padding-block:10px}
.brand{display:flex;align-items:baseline;gap:8px;margin-right:auto}
.mark{font-family:var(--display);font-size:2rem;line-height:1;color:var(--accent)}
.brand .sub{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700}
.transport{display:flex;align-items:center;gap:12px 20px;flex-wrap:wrap}
.play{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:1.05rem;padding:10px 22px 10px 18px;cursor:pointer;min-width:118px;justify-content:center}
.play:hover{filter:brightness(1.08)}
.play svg{width:16px;height:16px;fill:currentColor}
.pos{min-width:150px}
.pos-main{font-weight:700;font-size:.95rem;font-variant-numeric:tabular-nums;white-space:nowrap}
.beats{display:flex;gap:6px;margin-top:5px;height:12px;align-items:center}
.beats i{width:9px;height:9px;border-radius:50%;background:var(--line);transition:background .06s}
.beats i.down{width:12px;height:12px}
.beats i.on{background:var(--gorse)}
.tempo{display:flex;align-items:center;gap:8px}
.tempo label{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.tempo input{width:150px;accent-color:var(--accent)}
.tempo output{font-family:var(--mono);font-size:.95rem;min-width:3.6em;font-variant-numeric:tabular-nums}
.chk{display:inline-flex;align-items:center;gap:6px;font-size:.95rem;cursor:pointer;user-select:none}
.chk input{accent-color:var(--accent);width:17px;height:17px}

/* main grid */
main.grid{display:grid;grid-template-columns:minmax(0,410px) minmax(0,1fr);gap:28px;padding-block:24px 48px;align-items:start}
.right,.left{display:grid;gap:28px;min-width:0;align-content:start}
.mini{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:3px 4px;font-size:.9rem}
.help p{margin:0 0 8px}
.beatex{display:grid;gap:4px;padding:8px 10px;background:var(--sunk);border-radius:7px}
.beatex span{display:flex;gap:10px;flex-wrap:wrap}
.beatex em{font-style:normal;color:var(--muted)}
.chk select{cursor:pointer}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;min-width:0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}

/* tabs */

.fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:grid;gap:4px;min-width:0}
.field.full{grid-column:1/-1}
.field>label,.lbl{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.field input[type=text],.field input[type=number],.field select,textarea{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:7px 9px;min-width:0}
.field input[type=range]{accent-color:var(--accent);width:100%}
.keyrow{display:grid;grid-template-columns:5em 1fr;gap:6px}
textarea{font-family:var(--mono);font-size:.92rem;line-height:1.6;min-height:230px;resize:vertical;white-space:pre;overflow-x:auto}
.help{font-size:.9rem;color:var(--muted);margin:10px 0 0}
.help code{font-family:var(--mono);font-size:.85em;background:var(--sunk);padding:0 4px;border-radius:4px;color:var(--ink)}
.err{color:var(--danger);font-size:.92rem;margin:8px 0 0;white-space:pre-line}
.err:empty{display:none}

/* sheet music */
.btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:7px 14px;cursor:pointer;font-weight:700}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn:disabled{opacity:.5;cursor:default}
.status{font-size:.95rem;margin:10px 0 0;min-height:1.4em}

/* chart */
.chart-head{display:flex;justify-content:space-between;align-items:baseline;gap:6px 16px;flex-wrap:wrap;margin-bottom:14px}
.chart-head h2{font-size:1.8rem}
.meta{margin:0;color:var(--muted);font-weight:500}
.chart{display:grid;gap:16px}
.part{display:grid;grid-template-columns:2.4rem minmax(0,1fr);gap:10px;align-items:start}
.part.nolabel{grid-template-columns:minmax(0,1fr)}
.part.nolabel .plabel{display:none}
.plabel{font-family:var(--display);font-size:1.5rem;line-height:1;padding-top:12px;color:var(--accent);text-align:center}
.plabel small{display:block;font-family:var(--body);font-size:.72rem;color:var(--muted);font-weight:700;margin-top:4px;letter-spacing:.04em}
.bars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-left:3px double var(--ink)}
.barcell{position:relative;border:0;border-right:1.5px solid var(--ink);border-bottom:1px solid var(--line);background:transparent;min-height:56px;padding:8px 8px 6px;display:flex;align-items:center;gap:4px;cursor:pointer;text-align:left;min-width:0}
.barcell:hover{background:var(--sunk)}
.barcell .num{position:absolute;top:3px;left:6px;font-size:.66rem;color:var(--muted);font-variant-numeric:tabular-nums}
.slot{flex:1;font-weight:800;font-size:1.12rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-top:6px}
.slot.cont{color:var(--muted);font-weight:400}
.slot.rest{color:var(--muted);font-size:.85rem;font-weight:500}
.barcell.start::after{content:"";position:absolute;left:-1px;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--accent)}
.barcell.volta{box-shadow:inset 0 2px 0 var(--ink)}
.barcell.volta-start{box-shadow:inset 2px 2px 0 var(--ink)}
.barcell.volta .num{font-weight:800;color:var(--ink);font-size:.72rem}
.barcell.now{background:var(--gorse-soft)}
.barcell.now .slot{color:var(--ink)}
.hint{color:var(--muted);font-size:.9rem;margin:12px 0 0}
.empty{color:var(--muted);padding:24px;border:1px dashed var(--line);border-radius:var(--r);text-align:center}

/* band */
.tracks{display:grid;gap:0}
.track{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1.3fr) minmax(0,.8fr) auto;gap:10px 14px;align-items:center;padding:11px 0;border-top:1px solid var(--line)}
.track:first-child{border-top:0}
.track.off .t-name,.track.off select,.track.off input{opacity:.45}
.t-name{display:flex;align-items:center;gap:10px;min-width:0}
.led{width:10px;height:10px;border-radius:50%;background:var(--line);flex:none;transition:background .12s}
.led.hit{background:var(--gorse);transition:none}
.t-label{font-weight:800;display:block;line-height:1.15}
.t-desc{font-size:.82rem;color:var(--muted);display:block}
.track select{background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:5px 6px;width:100%;min-width:0}
.slider{display:grid;gap:0}
.slider span{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700}
.slider input{width:100%;accent-color:var(--accent)}
.t-btns{display:flex;gap:4px}
.tb{border:1px solid var(--line);background:var(--bg);border-radius:6px;padding:4px 8px;font-size:.82rem;font-weight:800;cursor:pointer;min-width:34px}
.tb[aria-pressed="true"].t-mute{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.tb[aria-pressed="true"].t-solo{background:var(--gorse);border-color:var(--gorse);color:#1b1505}
.tb.t-del{color:var(--muted)}
.tb.t-del:hover{color:var(--danger);border-color:var(--danger)}
.addrow{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.addrow select{background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:6px 8px}
.addrow .spacer{flex:1}
.linkbtn{border:0;background:none;color:var(--muted);text-decoration:underline;cursor:pointer;padding:4px}

@media (max-width:960px){
  main.grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  body{font-size:16px}
  .tempo input{width:110px}
  .brand{margin-right:0;width:100%}
  .track{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .t-name{grid-column:1/2}
  .track select{grid-column:2/3}
  .t-btns{grid-column:2/3;justify-content:flex-end}
  .bars{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fields{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* instrument sounds */
.sounds-box{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.sounds-box summary{cursor:pointer;font-weight:800;padding:4px 0}
.sounds-box[open] summary{margin-bottom:6px}
.snd{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) auto;gap:6px 14px;align-items:center;padding:9px 6px;border-top:1px solid var(--line);border-radius:6px}
.snd.over{background:var(--sunk);outline:1.5px dashed var(--accent)}
.snd select{background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:5px 6px;width:100%;min-width:0}
.snd label.tb{display:inline-flex;align-items:center}
.s-msg{grid-column:1/-1;margin:0;font-size:.85rem;color:var(--muted)}
.s-msg:empty{display:none}
@media (max-width:640px){ .snd{grid-template-columns:minmax(0,1fr) minmax(0,1fr)} .snd .t-btns{grid-column:1/-1} }

/* tune library */
.lib-count{font-size:.9rem}
.lib-tools{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.lib-tools .lib-book{grid-column:1/-1;font-weight:700}
.lib-tools input,.lib-tools select{background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:7px 9px;min-width:0}
.lib-list{list-style:none;margin:10px 0 0;padding:0;max-height:300px;overflow-y:auto;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
.lib-list li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;align-items:baseline;padding:8px 11px;border-top:1px solid var(--line);cursor:pointer}
.lib-list li:first-child{border-top:0}
.lib-list li:hover{background:var(--sunk)}
.lib-list li[aria-selected="true"]{background:var(--gorse-soft);box-shadow:inset 3px 0 0 var(--gorse)}
.lib-list .lt{font-weight:800;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lib-list .lm{font-size:.82rem;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.lib-list .ls{grid-column:1/-1;font-size:.78rem;color:var(--muted)}
.lib-list .empty-li{cursor:default;color:var(--muted);display:block}
.lib-list .empty-li:hover{background:transparent}
.lib-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:12px}
.lib-actions .spacer{flex:1}
.lib-actions label.btn{display:inline-block}
.btn.danger{background:var(--danger);border-color:var(--danger);color:var(--surface)}
.btn.danger-quiet:hover{border-color:var(--danger);color:var(--danger)}
.lib-confirm{margin-top:12px;padding:10px 12px;border:1px solid var(--danger);border-radius:8px}
.lib-confirm p{margin:0}
.lib-confirm .lib-actions{margin-top:8px}
.status{font-size:.92rem;margin:10px 0 0;color:var(--muted)}
.status:empty{display:none}
.note{margin:8px 0 0;border-left:3px solid var(--gorse);background:var(--gorse-soft);padding:8px 12px;border-radius:0 8px 8px 0;font-size:.92rem}