:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg-page: #0b0f14;--bg-page-grad-top: rgba(18, 24, 32, .98);--text-main: #e5edf7;--text-subtle: #93a4b7;--panel-bg: rgba(14, 20, 28, .92);--panel-border: #1f2b38;--control-bg: #121b26;--control-border: #2a3a4d;--control-text: #dbeafe;--score-ink: #e1e1e1;--staff-ink: #6f6f6f;background:var(--bg-page);color:var(--text-main)}:root[data-theme=light]{color-scheme:light;--bg-page: #f1f5f9;--bg-page-grad-top: rgba(244, 248, 252, .95);--text-main: #0f172a;--text-subtle: #475569;--panel-bg: rgba(255, 255, 255, .95);--panel-border: #cbd5e1;--control-bg: #f8fafc;--control-border: #94a3b8;--control-text: #0f172a;--score-ink: #111827;--staff-ink: #111827;--light-active-bg: #dbeafe;--light-active-border: #60a5fa;--light-active-text: 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svg{fill:currentColor}.songRank{color:var(--text-subtle);text-align:right;font-variant-numeric:tabular-nums}.songCover{display:grid;width:48px;height:48px;place-items:center;overflow:hidden;border:1px solid #343a44;border-radius:6px;background:#121821;color:#7dd3fc}:root[data-theme=light] .songCover{border-color:#cbd5e1;background:#f8fafc;color:#0284c7}.songCover img{width:100%;height:100%;object-fit:cover}.songText{min-width:0}.songText strong,.songText span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.songText strong{font-size:15px}.songText span{margin-top:2px;color:var(--text-subtle);font-size:14px}.songListEmpty,.localSongPanel{display:grid;place-items:center;color:var(--text-subtle)}.localSongPanel{flex:1 1 auto;min-height:0;gap:12px;padding:34px 24px 40px;text-align:center}.localZipButton{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 18px;border:1px solid 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11px);width:2px;height:68px;background:var(--score-ink);z-index:2}.noteHead{position:absolute;top:75px;left:calc(50% - 17px);width:32px;height:21px;border-radius:999px;background:var(--score-ink);transform:rotate(-16deg);transform-origin:center;z-index:2}.practiceNote.active .noteStem,.practiceNote.active .noteHead{background:#60a5fa}.handLabel{display:grid;width:38px;height:38px;place-items:center;align-self:end;border-radius:999px;color:#fff;font-size:24px;font-weight:780;line-height:1}.handLabel.rightHand{background:#ef2f24}.handLabel.leftHand{background:#3478f6}.practiceNote.active .handLabel{box-shadow:0 0 0 3px #60a5fa57}.practiceControls{display:grid;grid-template-columns:42px minmax(180px,1fr) minmax(92px,120px) minmax(150px,190px) auto;gap:12px;align-items:end;margin-top:22px}.metronomePlay.active{border-color:#38bdf8;background:#103247;color:#f8fafc}.bpmControl{display:grid;grid-template-columns:42px minmax(0,1fr) 42px;gap:8px;align-items:center}.bpmControl 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button.active{border-color:#38bdf8;background:#103247;color:#f8fafc}.audioModeBar button.active{border-color:#22c55e;background:#103321;color:#f8fafc}.layoutSwitch button.active{border-color:#a78bfa;background:#241948;color:#f8fafc}.iconToggleButton.audioToggle.active{border-color:#22c55e;background:#103321;color:#f8fafc}.iconToggleButton.colorToggle.active{border-color:#a78bfa;background:#241948;color:#f8fafc}.iconToggleButton.colorToggle.active>svg{color:#67e8f9}.iconToggleButton.calibrationToggle.active,.iconToggleButton.fullscreenToggle.active{border-color:#38bdf8;background:#103247;color:#f8fafc}.calibrationPanel{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.calibrationPanel label{display:grid;gap:5px;color:var(--muted);font-size:.78rem;font-weight:700}.calibrationPanel input{min-width:0;height:38px;border:1px solid var(--control-border);border-radius:8px;background:var(--control-bg);color:var(--control-text);padding:0 10px;font:inherit}.calibrationPanel button{grid-column:1 / -1;min-height:38px;border:1px solid #38bdf8;border-radius:8px;background:#103247;color:#f8fafc;cursor:pointer;font-weight:800}.calibrationPointActions{grid-column:1 / -1;display:grid;gap:8px}.calibrationStatus{grid-column:1 / -1;display:grid;gap:4px;color:var(--muted);font-size:.78rem;font-weight:700}.calibrationStatus strong{color:var(--text)}.audioToggleDrumIcon{transform:translate(-4px,4px)}.iconBadge{position:absolute;right:5px;top:5px;color:#f87171}.noteColorDots{position:absolute;right:7px;bottom:8px;display:flex;gap:2px}.noteColorDots span{width:4px;height:4px;border-radius:999px}.noteColorDots span:nth-child(1){background:#f97316}.noteColorDots span:nth-child(2){background:#ef4444}:root[data-theme=light] .difficultyBar button.active,:root[data-theme=light] .audioModeBar button.active,:root[data-theme=light] .layoutSwitch button.active,:root[data-theme=light] .iconToggleButton.active{border-color:var(--light-active-border);background:var(--light-active-bg);color:var(--light-active-text)}:root[data-theme=light] .iconToggleButton.audioToggle.active{border-color:#22c55e;background:#dcfce7;color:#14532d}:root[data-theme=light] .iconToggleButton.colorToggle.active{border-color:#a78bfa;background:#ede9fe;color:#4c1d95}:root[data-theme=light] .iconToggleButton.colorToggle.active>svg{color:#0284c7}.emptyState,.notationEmpty{color:#8190a3;font-size:14px}.emptyState{margin-top:14px}.transport{display:grid;grid-template-columns:42px minmax(0,1fr);gap:10px;align-items:center;margin-top:14px}.fullscreenTransport .transport{grid-template-columns:42px minmax(180px,1fr) auto;margin-top:0}.iconButton{display:grid;width:42px;height:42px;place-items:center}.iconButton:disabled,.timeline:disabled{cursor:not-allowed;opacity:.48}.playToggle.active{border-color:#38bdf8;background:#103247;color:#f8fafc;box-shadow:0 0 0 1px 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132px)}.fullscreenControlBar{position:fixed;right:0;bottom:0;left:0;z-index:10;display:grid;grid-template-columns:auto minmax(260px,1fr);gap:14px;align-items:center;min-height:76px;padding:12px 24px;border-top:1px solid var(--panel-border);background:#202228}.fullscreenControlToggles{min-width:0}.fullscreenCalibration{grid-column:1 / -1;max-width:440px}.notationScroller svg{display:block}.playhead{position:absolute;top:0;left:0;z-index:3;width:2px;height:124px;background:#38bdf8;box-shadow:0 0 14px #38bdf88c;pointer-events:none}.notationEmpty{display:grid;min-height:520px;place-items:center;padding:24px}.errorBanner{margin-bottom:14px;padding:10px 12px;border:1px solid #7f1d1d;border-radius:8px;background:#2b1114;color:#fecaca}.topBarActions{display:inline-flex;align-items:center;gap:8px}.homeMenu{position:relative}.themeToggle,.homeToggle{width:42px;min-width:42px;height:42px}.homeMenuPanel{position:absolute;top:calc(100% + 8px);right:0;z-index:12;display:grid;min-width:156px;padding:6px;border:1px solid var(--panel-border);border-radius:8px;background:var(--panel-bg);box-shadow:0 16px 42px #00000057}.homeMenuPanel button{min-height:38px;border:0;border-radius:6px;background:transparent;color:var(--text-main);text-align:left;padding:0 10px;cursor:pointer}.homeMenuPanel button:hover,.homeMenuPanel button:focus-visible{background:var(--control-bg);outline:none}.homeMenuPanel button.active{background:#103247;color:#f8fafc}:root[data-theme=light] .rudimentList button.active,:root[data-theme=light] .metronomePlay.active,:root[data-theme=light] .homeMenuPanel button.active{border-color:var(--light-active-border);background:var(--light-active-bg);color:var(--light-active-text)}@media (max-width: 860px){.appShell{padding:14px}.topBar{align-items:stretch;flex-direction:column}.workspace,.practiceView{grid-template-columns:1fr}.practiceControls{grid-template-columns:42px 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