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8px;height:100%;padding:0;background:#ffd38ab3;cursor:ew-resize}.loop-band{position:absolute;top:0;bottom:0;z-index:6;pointer-events:none;background:#ffd38a0b;border-inline:1px solid rgba(255,211,138,.3)}.timeline-body{position:relative}.track-header{position:sticky;left:0;z-index:12;flex:0 0 var(--label-width);width:var(--label-width);min-width:0;display:flex;align-items:center;gap:var(--space-1);padding:0 var(--space-2) 0 0;background:var(--surface);border-right:1px solid var(--line);box-shadow:inset 3px 0 0 var(--track-color)}.track-header-open{flex:1 1 auto;display:flex;align-items:center;gap:var(--space-2);min-width:0;height:100%;padding:0 var(--space-1) 0 var(--space-3);color:var(--ink-soft);font-size:var(--text-sm);font-weight:560;text-align:left}.track-header-open:hover{color:var(--ink)}.track-header-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mix-toggles{flex:0 0 auto;display:inline-flex;gap:2px}.mix-toggle{width:22px;height:22px;padding:0;border-radius:var(--radius-sm);background:#ffeccd0f;color:var(--dim);font-size:10.5px;font-weight:700;transition:background var(--ease),color var(--ease)}.mix-toggle:hover{background:var(--hover-strong);color:var(--ink)}.mix-toggle.is-mute.is-on{background:var(--mute);color:var(--on-note)}.mix-toggle.is-solo.is-on{background:var(--solo);color:var(--on-note)}.mix-toggle.is-remove{display:inline-grid;place-items:center}.mix-toggle.is-remove:hover:not(:disabled){color:var(--danger);background:#ff6e6e1f}.track-lane{display:flex;border-bottom:1px solid var(--line)}.track-lane-notes{position:relative;height:100%;cursor:pointer;transition:background var(--ease)}.track-lane-notes:hover{background:#ffeccd08}.track-lane-canvas{position:sticky;left:var(--label-width);display:block;height:46px;pointer-events:none}.track-lane.is-silent .track-lane-canvas{opacity:.28}.track-lane.is-silent .track-header-open{color:var(--dim)}.track-lane-empty{position:sticky;left:calc(var(--label-width) + var(--space-3));display:inline-block;padding-top:14px;color:var(--dim);font-size:var(--text-xs)}.track-active{border-bottom:1px solid var(--line)}.track-active-head{position:sticky;left:0;z-index:13;display:flex;align-items:center;gap:var(--space-3);width:fit-content;padding-right:var(--space-3);border-top-right-radius:var(--radius-sm);background:var(--surface);box-shadow:inset 3px 0 0 var(--track-color)}.instrument-pick{display:inline-flex;align-items:center;gap:var(--space-2);height:100%;padding:0 var(--space-2) 0 var(--space-3);color:var(--ink);font-size:var(--text-md);font-weight:620;white-space:nowrap}.instrument-pick:hover{background:var(--hover)}.instrument-pick span{max-width:220px;overflow:hidden;text-overflow:ellipsis}.track-facts{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--dim);font-size:var(--text-xs);white-space:nowrap}.active-volume{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}.active-volume input{width:84px;accent-color:var(--track-color)}.track-minimize{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:var(--radius-sm);color:var(--dim);transform:rotate(180deg)}.track-minimize:hover{background:var(--hover);color:var(--ink)}.add-track-row{display:flex;align-items:center}.add-track-button{position:sticky;left:0;display:inline-flex;align-items:center;gap:6px;height:100%;width:var(--label-width);padding:0 var(--space-3);color:var(--muted);font-size:var(--text-sm);font-weight:560}.add-track-button:hover{background:var(--hover);color:var(--ink)}.piano-roll{position:relative;display:flex;align-items:flex-start}.roll-labels{position:sticky;left:0;z-index:12;flex:0 0 var(--label-width);background:var(--surface);border-right:1px solid var(--line);box-shadow:inset 3px 0 0 var(--track-color)}.roll-label{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);width:100%;padding:0 var(--space-3);cursor:pointer;transition:background var(--ease)}.roll-label:hover{background:var(--hover)}.roll-label.group-alt,.roll-row-bg.group-alt{background-color:#ffeccd05}.roll-pad-number{color:var(--dim);font-family:var(--mono);font-size:10px}.roll-note-name{min-width:34px;color:var(--ink-soft);font-size:var(--text-sm);font-weight:580;text-align:right}.roll-label.is-tonic .roll-note-name{color:var(--accent)}.roll-grid{position:relative;flex:0 0 auto;overflow:hidden;touch-action:none}.roll-grid.tool-draw{cursor:crosshair}.roll-grid.tool-select{cursor:default}.roll-row-bg{position:absolute;left:0;right:0;pointer-events:none;border-bottom:1px solid rgba(255,236,205,.035)}.roll-row-bg.is-tonic{background-color:#ffd38a09}.roll-note{position:absolute;z-index:3;display:flex;align-items:center;overflow:hidden;border-radius:999px;background:var(--track-color);color:var(--on-note);cursor:grab;touch-action:none;user-select:none;transition:filter var(--ease),box-shadow var(--ease)}.roll-note.is-shot{justify-content:center}.roll-note.is-held{border-radius:7px;padding-left:7px}.roll-note:hover{filter:brightness(1.14)}.roll-note:active{cursor:grabbing}.roll-note.is-selected{z-index:4;opacity:1!important;box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--ink)}.roll-grid.is-compact .roll-note{padding:0;border-radius:3px}.roll-note-label{font-size:10px;font-weight:700;pointer-events:none}.note-resize{position:absolute;top:0;right:0;bottom:0;width:9px;background:#17131f38;cursor:ew-resize;opacity:0;transition:opacity var(--ease)}.roll-note:hover .note-resize,.roll-note.is-selected .note-resize{opacity:1}.roll-ghost{position:absolute;top:0;left:0;z-index:2;display:none;border-radius:999px;box-shadow:inset 0 0 0 1.5px var(--track-color);background:color-mix(in srgb,var(--track-color) 20%,transparent);color:var(--ink);font-size:10px;font-weight:700;text-align:center;pointer-events:none}.marquee{position:absolute;z-index:5;border:1px solid var(--accent);border-radius:3px;background:#ffd38a1a;pointer-events:none}.roll-empty{position:absolute;top:50%;left:200px;z-index:1;display:flex;flex-direction:column;gap:2px;padding:var(--space-3) var(--space-4);transform:translateY(-50%);border-radius:var(--radius-md);background:var(--surface);color:var(--muted);font-size:var(--text-sm);pointer-events:none}.roll-empty strong{color:var(--ink-soft);font-size:15px;font-weight:620}.playhead-line{position:absolute;top:0;bottom:0;left:0;z-index:8;width:1.5px;background:var(--accent);pointer-events:none;will-change:transform}.selection-bar{position:absolute;z-index:40;left:50%;bottom:var(--space-3);display:flex;align-items:center;gap:var(--space-2);max-width:calc(100% - 24px);padding:var(--space-1) var(--space-2) var(--space-1) var(--space-3);overflow-x:auto;scrollbar-width:none;transform:translate(-50%);border-radius:var(--radius-md);background:var(--panel-strong);box-shadow:0 0 0 1px var(--line-strong),var(--shadow);animation:rise .14s ease-out}@keyframes rise{0%{opacity:0;transform:translate(-50%,6px)}}.selection-bar strong{flex:0 0 auto;color:var(--accent);font-size:var(--text-sm);font-weight:620}.selection-actions{display:flex;align-items:center;gap:2px}.selection-actions button{display:inline-flex;align-items:center;gap:5px;height:32px;padding:0 var(--space-2);border-radius:var(--radius-sm);color:var(--ink-soft);font-size:var(--text-sm);white-space:nowrap}.selection-actions button:hover{background:var(--hover)}.selection-actions .danger-text{color:var(--danger)}.selection-divider{width:1px;height:18px;margin:0 var(--space-1);background:var(--line)}.velocity-control{display:inline-flex;align-items:center;gap:6px;padding:0 var(--space-1);color:var(--muted);font-size:var(--text-sm)}.velocity-control input{width:70px;accent-color:var(--accent)}.key-panel{flex:0 0 296px;display:flex;flex-direction:column;gap:var(--space-3);min-height:0;padding:var(--space-3);overflow-y:auto;border-radius:var(--radius-lg);background:var(--surface)}.key-panel-head{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.key-panel-head strong{display:block;font-size:var(--text-md);font-weight:620}.key-panel-head span{color:var(--dim);font-size:var(--text-xs)}.step-toggle{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 var(--space-2);border-radius:var(--radius-sm);background:#ffeccd0f;color:var(--muted);font-size:var(--text-sm);font-weight:560}.step-toggle span{color:inherit;font-size:inherit}.step-toggle:hover{background:var(--hover-strong)}.step-toggle.is-on{background:var(--mute);color:var(--on-note)}.key-grid{display:grid;gap:6px}.key-pad{position:relative;display:grid;place-items:center;aspect-ratio:1;min-width:0;overflow:hidden;border-radius:var(--radius-md);background:#ffeccd12;color:var(--ink-soft);font-size:var(--text-sm);font-weight:620;transition:background var(--ease),transform 80ms ease;touch-action:none;user-select:none}.key-pad:hover{background:color-mix(in srgb,var(--track-color) 26%,transparent);color:var(--ink)}.key-pad:active{background:var(--track-color);color:var(--on-note);transform:scale(.95)}.key-pad.is-tonic{box-shadow:inset 0 0 0 1.5px color-mix(in srgb,var(--track-color) 65%,transparent)}.key-pad-name{max-width:100%;padding:0 2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.key-pad kbd{position:absolute;right:5px;bottom:3px;min-width:0;padding:0;border:0;background:none;box-shadow:none;color:var(--dim);font-family:var(--mono);font-size:9px}.key-panel-hint{color:var(--dim);font-size:var(--text-sm);line-height:1.45}.hint-list{display:grid;gap:5px;margin:auto 0 0;padding-top:var(--space-3);border-top:1px solid var(--line);font-size:var(--text-xs)}.hint-list div{display:flex;justify-content:space-between;gap:var(--space-2)}.hint-list dt{color:var(--ink-soft)}.hint-list dd{margin:0;color:var(--dim)}.hint-list kbd{min-width:0;padding:0 4px;border:0;border-radius:4px;box-shadow:none;background:#ffeccd17;font-family:var(--mono);font-size:10px}.status-bar{flex:0 0 auto;display:flex;align-items:center;gap:var(--space-4);height:46px;padding:0 22px var(--space-2)}.pointer-readout{flex:0 0 auto;display:inline-flex;align-items:baseline;gap:var(--space-3);width:196px;overflow:hidden;color:var(--muted);font-size:var(--text-xs);white-space:nowrap}.pointer-readout b{color:var(--ink);font-family:var(--mono);font-weight:500}.pointer-readout.is-idle{color:var(--dim);text-overflow:ellipsis}.overview{position:relative;flex:1 1 auto;min-width:0;height:30px;overflow:hidden;border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;touch-action:none}.overview canvas{display:block;width:100%}.overview-window{position:absolute;top:0;bottom:0;min-width:6px;border-radius:var(--radius-sm);background:#ffeccd1a;box-shadow:inset 0 0 0 1px #ffeccd52;pointer-events:none}.overview-cursor{position:absolute;top:0;bottom:0;width:1.5px;background:var(--accent);pointer-events:none}@media(max-width:1240px){.key-panel{flex-basis:248px}.track-facts,.tool-toggle span,.icon-text-button span{display:none}}@media(prefers-reduced-motion:reduce){.selection-bar{animation:none}}