:root{
  color-scheme:light;
  --navy:#14213d;--navy-2:#1f3158;--teal:#00a896;--teal-dark:#007f73;
  --paper:#fff;--bg:#eef3f8;--ink:#17233a;--muted:#66758d;--line:#d8e1eb;
  --selection:#ffb703;--selection-strong:#fb8500;--danger:#c43f4b;--shadow:0 14px 40px rgba(20,33,61,.16);
  --tap:54px;--console-height:194px;--score-scale:1;
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
body{overflow:hidden}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(0,168,150,.34);outline-offset:2px}
[hidden]{display:none!important}.app-shell{height:100vh;display:grid;grid-template-rows:68px 58px 1fr}.topbar{display:flex;align-items:center;gap:10px;padding:0 max(12px,env(safe-area-inset-left));background:linear-gradient(135deg,var(--navy),#101827);color:#fff;box-shadow:0 4px 18px rgba(9,17,32,.22);z-index:30}.icon-button{width:var(--tap);height:var(--tap);display:grid;place-items:center;border:0;border-radius:14px;background:transparent;color:inherit;font-size:25px;font-weight:800}.icon-button:hover{background:rgba(255,255,255,.1)}.icon-button:active{transform:scale(.96)}.icon-button.dark{color:var(--ink)}
.brand-block{min-width:0;flex:1}.brand-block strong{display:block;font-size:20px;letter-spacing:-.02em}.brand-block span{display:block;color:#aab7cc;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.engine-pill{height:34px;padding:0 11px;border:1px solid rgba(255,255,255,.15);border-radius:999px;display:flex;align-items:center;gap:8px;font-size:12px;color:#d9e4f3;background:rgba(255,255,255,.07)}.engine-light{width:9px;height:9px;border-radius:50%;background:#f3b33d;box-shadow:0 0 0 4px rgba(243,179,61,.13)}.engine-pill.ready .engine-light{background:#2dd4bf;box-shadow:0 0 0 4px rgba(45,212,191,.13)}.engine-pill.error .engine-light{background:#ef6b73;box-shadow:0 0 0 4px rgba(239,107,115,.13)}
.actionbar{display:flex;align-items:center;gap:7px;padding:7px 12px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none;z-index:20}.actionbar::-webkit-scrollbar{display:none}.tool{height:43px;min-width:46px;padding:0 13px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font-weight:800;white-space:nowrap;box-shadow:0 2px 5px rgba(20,33,61,.04)}.tool:hover{border-color:#aebdcd;background:#f9fbfd}.signature-control{height:43px;display:flex;align-items:center;gap:7px;padding:0 8px 0 11px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--muted);font-size:11px;font-weight:850;white-space:nowrap}.signature-control select{height:31px;min-width:64px;border:0;border-radius:8px;background:#eef3f8;color:var(--ink);padding:0 7px;font-weight:900}.tool.active{background:var(--teal);border-color:var(--teal);color:#fff}.tool.transpose{font-size:17px}.tool:disabled{opacity:.4;cursor:default}.separator{width:1px;height:30px;background:var(--line);flex:none}
.workspace{min-height:0;display:grid;grid-template-rows:auto 1fr;padding-bottom:var(--console-height)}.score-summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 18px 10px;max-width:1500px;width:100%;margin:auto}.score-summary h1{margin:0;font-size:21px}.score-summary p{margin:3px 0 0;color:var(--muted);font-size:13px}.selection-summary{padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:12px;box-shadow:0 3px 12px rgba(20,33,61,.05)}
.score-viewport{position:relative;min-height:0;overflow:auto;padding:4px 14px 38px;scroll-behavior:auto;touch-action:pan-x pan-y;background:#dfe6ee;overscroll-behavior:contain}
.score{width:960px;min-width:960px;margin:0 auto 24px;background:var(--paper);padding:18px 20px 30px;display:block;transform-origin:top left;box-shadow:0 12px 34px rgba(20,33,61,.12);border:1px solid #d7dee7}.score-system{display:flex;align-items:flex-start;width:920px;min-height:206px;margin:0;break-inside:avoid}.score-system+.score-system{margin-top:12px}
.measure-card{position:relative;flex:0 0 auto;background:var(--paper);border:0;border-radius:0;box-shadow:none;overflow:hidden;min-width:0;contain:layout style paint;content-visibility:auto;contain-intrinsic-size:auto 270px}
.measure-card.active-measure::before{content:"";position:absolute;z-index:5;left:0;top:22px;bottom:18px;width:3px;border-radius:3px;background:var(--teal)}
.measure-number{position:absolute;left:8px;top:5px;z-index:4;color:#d14d45;font-weight:900;font-size:11px;background:transparent;border:0;min-width:0;height:auto}
.measure-card svg{display:block;width:100%;min-width:0;height:auto}
.measure-scroll{overflow:hidden}
.measure-card text{user-select:none}
.score-paper{fill:#fff}
.cell-hit{fill:transparent;stroke:transparent;stroke-width:1.5;cursor:crosshair;pointer-events:all}
.cell-hit:hover{fill:rgba(0,168,150,.07);stroke:rgba(0,168,150,.42)}
.cell-hit.selected{fill:rgba(0,168,150,.13);stroke:rgba(0,127,115,.66);stroke-width:2}
.cell-hit.primary{fill:rgba(255,183,3,.18);stroke:var(--selection-strong);stroke-width:2.7}
.note-token{pointer-events:none}
.note-halo{fill:transparent;stroke:transparent;stroke-width:0}
.cell-hit.selected + .note-token .note-halo{stroke:var(--teal);stroke-width:5}
.cell-hit.primary + .note-token .note-halo{stroke:var(--selection-strong);stroke-width:7}
.note-head{fill:#fff;stroke:#263246;stroke-width:1.8}.note-head.filled{fill:#263246}
.note-stem,.note-flag{fill:none;stroke:#263246;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.note-dot{fill:#263246}.ledger-line{stroke:#263246;stroke-width:1.1}.accidental{font-size:15px;fill:#263246;text-anchor:middle}
.tab-note-bg{fill:#fff}.cell-hit.selected + .note-token .tab-note-bg{fill:#dff8f4}.cell-hit.primary + .note-token .tab-note-bg{fill:#fff0cf}
.note-label{font-size:13px;font-weight:850;fill:#162033;text-anchor:middle;dominant-baseline:middle}
.tab-line,.staff-line{stroke:#5c6674;stroke-width:.85;shape-rendering:crispEdges}.bar-line{stroke:#263246;stroke-width:1.7;shape-rendering:crispEdges}
.clef{font-size:49px;font-family:"Bravura","Noto Music",serif;fill:#172033}.percussion-clef{font-size:39px;font-family:"Bravura","Noto Music",serif;fill:#172033}.tab-label{font-size:16px;font-weight:900;fill:#4f5e72}.tempo-label{font-size:11px;font-weight:800;fill:#263246}.time-signature{font-size:19px;font-weight:900;fill:#172033;text-anchor:middle}
.effect-label{font-size:8px;font-weight:800;fill:#59677b;text-anchor:middle}
.drum-note{fill:#263246;stroke:#263246;stroke-width:1.8}.drum-note.x{fill:none;stroke-width:2.2}.drum-selection{fill:none;stroke:transparent;stroke-width:0}.cell-hit.selected + .drum-token .drum-selection{stroke:var(--teal);stroke-width:4}.cell-hit.primary + .drum-token .drum-selection{stroke:var(--selection-strong);stroke-width:6}
.selection-marquee{position:fixed;z-index:80;border:2px solid var(--teal);background:rgba(0,168,150,.12);pointer-events:none;border-radius:3px;box-shadow:0 0 0 1px rgba(255,255,255,.8) inset}

.bottom-console{position:fixed;left:0;right:0;bottom:0;z-index:28;background:#101827;padding:11px max(12px,env(safe-area-inset-right)) calc(11px + env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));box-shadow:0 -6px 20px rgba(13,20,34,.20)}.console-inner{max-width:1160px;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px}.input-panel-title{color:#9cabc1;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}.number-pad{display:grid;grid-template-columns:repeat(11,minmax(45px,1fr));gap:7px}.pad-key,.drum-key{height:58px;border:0;border-radius:13px;background:#f1f5f9;color:#1d2a40;font-weight:900;font-size:19px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.1)}.pad-key:hover,.drum-key:hover{background:#fff}.pad-key.delete{color:var(--danger);font-size:16px}.drum-pad{display:grid;grid-template-columns:repeat(5,minmax(75px,1fr));gap:7px}.drum-key{height:58px;font-size:11px;line-height:1.15;padding:5px}.drum-key strong{display:block;font-size:15px}.drum-key.active{background:#c9fbf2;color:#006b61;outline:2px solid var(--teal)}
.dpad{display:grid;grid-template:52px 52px 52px/58px 58px 58px;gap:6px}.dpad-button{border:0;border-radius:13px;background:#eef2f6;color:#25334a;font-size:25px;font-weight:900;box-shadow:inset 0 -3px 0 rgba(0,0,0,.1)}.dpad-button:hover{background:#fff}.dpad-button.up{grid-area:1/2}.dpad-button.left{grid-area:2/1}.dpad-button.center{grid-area:2/2;background:var(--teal);color:#fff;font-size:27px}.dpad-button.right{grid-area:2/3}.dpad-button.down{grid-area:3/2}
.overlay{position:fixed;inset:0;z-index:50;background:rgba(4,11,24,.58)}.drawer{position:fixed;z-index:51;inset:0 auto 0 0;width:min(410px,92vw);background:#0d1422;color:#fff;transform:translateX(-103%);transition:transform .24s cubic-bezier(.2,.8,.2,1);box-shadow:24px 0 60px rgba(0,0,0,.28)}.drawer.open{transform:none}.drawer-header{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 14px 0 20px;border-bottom:1px solid rgba(255,255,255,.1)}.drawer-header strong{font-size:21px}.drawer-tabs{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid rgba(255,255,255,.1)}.drawer-tab{height:53px;border:0;background:transparent;color:#9ba9be;font-weight:800}.drawer-tab.active{color:#fff;border-bottom:3px solid var(--teal)}.drawer-panel{height:calc(100% - 125px);display:none;overflow:auto;padding:12px}.drawer-panel.active{display:block}.drawer-action{width:100%;min-height:66px;display:grid;grid-template-columns:42px 1fr;align-items:center;gap:10px;border:0;border-radius:14px;background:transparent;color:#fff;text-align:left;padding:10px 12px}.drawer-action:hover{background:rgba(255,255,255,.08)}.drawer-action>span{font-size:23px;text-align:center}.drawer-action strong{display:block;font-size:16px}.drawer-action small{display:block;color:#8f9db1;margin-top:3px}.offline-note{margin:18px 8px;padding:14px;border-radius:13px;background:rgba(0,168,150,.11);border:1px solid rgba(0,168,150,.3);color:#bcefe8;font-size:12px;line-height:1.5}.track-card{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:9px;padding:11px;margin-bottom:9px;border:1px solid rgba(255,255,255,.1);border-radius:15px;background:rgba(255,255,255,.05)}.track-card.active{border-color:var(--teal);background:rgba(0,168,150,.13)}.track-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.09);font-size:21px}.track-info button{display:block;width:100%;border:0;background:transparent;color:#fff;text-align:left;padding:0;font-weight:800}.track-info small{display:block;color:#95a3b7;margin-top:3px}.track-remove{width:39px;height:39px;border:0;border-radius:10px;background:rgba(255,255,255,.08);color:#fff}.track-add-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}.track-add-row button{height:50px;border:0;border-radius:13px;background:var(--teal);color:#fff;font-weight:800}
.bottom-sheet{position:fixed;left:50%;bottom:0;z-index:61;width:min(820px,100%);max-height:min(78vh,760px);overflow:auto;transform:translate(-50%,105%);transition:transform .24s;background:#fff;border-radius:25px 25px 0 0;box-shadow:0 -20px 60px rgba(0,0,0,.24);padding:10px 17px calc(20px + env(safe-area-inset-bottom))}.bottom-sheet.open{transform:translate(-50%,0)}.sheet-handle{width:52px;height:5px;border-radius:5px;background:#c9d1db;margin:2px auto 10px}.sheet-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.sheet-heading h2{margin:2px 0 2px;font-size:20px}.sheet-heading p{margin:0;color:var(--muted);font-size:12px}.effect-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin-top:15px}.effect-chip{min-height:73px;border:1px solid var(--line);border-radius:15px;background:#f7f9fc;color:var(--ink);font-weight:800;padding:7px}.effect-chip strong{display:block;font-size:20px}.effect-chip small{display:block;color:var(--muted);margin-top:4px;font-size:10px}.effect-chip.active{background:#d7faf3;border-color:var(--teal);color:var(--teal-dark)}
.modal-backdrop{position:fixed;inset:0;z-index:70;display:grid;place-items:center;padding:18px;background:rgba(4,11,24,.58)}.modal-card{width:min(520px,100%);background:#fff;border-radius:22px;padding:20px;box-shadow:var(--shadow)}.modal-card h2{margin:0 0 16px}.modal-card label{display:grid;gap:6px;color:var(--muted);font-size:12px;font-weight:800;margin-bottom:12px}.modal-card input,.modal-card select{height:48px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}.modal-actions button{height:48px;padding:0 18px;border:0;border-radius:12px;font-weight:800}.modal-actions .secondary{background:#edf2f7;color:var(--ink)}.modal-actions .primary{background:var(--teal);color:#fff}.toast{position:fixed;z-index:100;left:50%;bottom:calc(var(--console-height) + 18px);transform:translate(-50%,18px);opacity:0;pointer-events:none;padding:11px 15px;border-radius:12px;background:#111827;color:#fff;box-shadow:var(--shadow);font-size:13px;transition:.18s;max-width:min(600px,90vw);text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}#alphaTabHost{position:fixed;left:-5000px;top:0;width:900px;height:500px;opacity:.001;pointer-events:none}
@media(max-width:900px){:root{--console-height:218px}.engine-pill{display:none}.number-pad{grid-template-columns:repeat(6,1fr)}.pad-key{height:51px}.effect-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){:root{--tap:48px;--console-height:253px}.app-shell{grid-template-rows:62px 55px 1fr}.topbar{padding:0 8px}.brand-block strong{font-size:18px}.brand-block span{font-size:11px}.topbar #stopButton{display:none}.actionbar{padding:6px 8px}.tool{height:41px}.score-summary{padding:10px 10px 8px}.score-summary h1{font-size:18px}.selection-summary{display:none}.score-viewport{padding:2px 7px 25px}.score{padding:12px 14px 22px;border-left:0;border-right:0}.console-inner{grid-template-columns:1fr auto;gap:8px}.number-pad{grid-template-columns:repeat(4,1fr);gap:6px}.pad-key{height:49px}.drum-pad{grid-template-columns:repeat(3,1fr);max-height:162px;overflow:auto}.drum-key{height:48px}.dpad{grid-template:48px 48px 48px/51px 51px 51px;gap:5px}.effect-grid{grid-template-columns:repeat(3,1fr)}.form-row{grid-template-columns:1fr}}
@media(min-width:1200px){.bottom-console{left:50%;right:auto;width:min(1180px,calc(100% - 28px));transform:translateX(-50%);bottom:10px;border-radius:22px;padding:12px 15px}.workspace{padding-bottom:calc(var(--console-height) + 8px)}}
.notation-hit{fill:transparent;stroke:transparent;pointer-events:all;cursor:pointer}
.beam-line{stroke:#263246;stroke-width:4.5;stroke-linecap:butt}