.guitar-app{flex:1;display:flex;flex-direction:column;overflow:hidden}.tabs{display:flex;justify-content:center;flex-shrink:0;border-bottom:1px solid var(--border);overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}.tab{padding:10px 16px;background:none;border:none;cursor:pointer;white-space:nowrap;font-family:var(--font-sans);font-size:13px;font-weight:500;color:var(--text-mute);border-bottom:2px solid transparent;transition:color .15s,border-color .15s;margin-bottom:-1px}.tab:hover{color:var(--text-dim)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.section{flex:1;min-height:0;display:flex;flex-direction:column}#scalesSection{padding:20px;gap:16px;overflow:hidden}.controls{display:flex;gap:12px;justify-content:center;flex-shrink:0;flex-wrap:wrap}.controls .ctrl{display:flex;align-items:center;gap:6px}.controls label{font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--text-dim);letter-spacing:.02em}.controls select{padding:6px 10px;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:13px;cursor:pointer}.board-wrap{flex:1;overflow-x:auto;overflow-y:hidden;display:flex;align-items:center;-webkit-overflow-scrolling:touch}.board-inner{min-width:900px;width:100%;max-height:340px;height:100%;display:flex;flex-direction:column}.scale-notes{text-align:center;font-family:var(--font-mono);font-size:13px;color:var(--text-dim);flex-shrink:0;letter-spacing:.03em}#scaleNotes{cursor:pointer}.scale-notes .root-note{color:#e8613c;font-weight:700}.scale-notes .note{color:var(--accent);font-weight:600}.scale-intervals{font-size:11px;color:var(--text-mute);letter-spacing:.01em}.inlay-row{display:grid;grid-template-columns:40px repeat(24,1fr);flex-shrink:0;padding-bottom:2px}.fretboard{display:grid;grid-template-columns:40px repeat(24,1fr);grid-template-rows:auto repeat(6,1fr);flex:1;min-height:0;border-radius:8px;overflow:hidden;background:var(--bg-raised);border:1px solid var(--border)}.fret{display:flex;align-items:center;justify-content:center;border-right:1px solid var(--border);border-bottom:1px solid var(--border);position:relative;min-height:0}.fret:nth-child(25n+1){border-right:2px solid var(--text-mute)}.inlay-cell{display:flex;align-items:center;justify-content:center}.fret-marker{width:5px;height:5px;border-radius:50%;background:var(--text-mute);opacity:.4}.inlay-cell.double{gap:6px}.fret-num{display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;color:var(--text-mute);border-right:2px solid var(--text-mute);border-bottom:1px solid var(--border);background:var(--bg)}.string-label{display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;font-weight:600;color:var(--text-dim);background:var(--bg);border-right:2px solid var(--text-mute);border-bottom:1px solid var(--border)}.dot{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:10px;font-weight:600;color:#fff;background:var(--accent);line-height:1;flex-shrink:0;cursor:pointer}.dot.root{background:#e8613c;transform:scale(1.1)}.dot.triad{box-shadow:0 0 0 2px #ffd166}[data-theme=light] .dot.triad{box-shadow:0 0 0 2px #000}.string-label .dot{width:24px;height:24px;font-size:9px}.string-label .dot.root{transform:scale(1.05)}.dot.dimmed{opacity:.2}.note-muted{font-family:var(--font-mono);font-size:9px;color:var(--text-mute);opacity:.3}.fret.fret-12{background:#6366f10d}#chordsSection{padding:20px;overflow-y:auto}.chords-grid{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}.chord-card{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 16px;border-radius:8px;cursor:pointer;background:var(--bg-raised);border:1px solid var(--border);transition:border-color .15s,box-shadow .15s}.chord-card:hover{border-color:var(--border-hover);box-shadow:0 2px 8px #00000014}.chord-name{font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--text)}.chord-markers{display:grid;grid-template-columns:repeat(6,16px)}.cm{display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;color:var(--text-mute);height:14px}.chord-diagram{padding-left:14px}.chord-group-label{width:100%;font-family:var(--font-sans);font-size:11px;font-weight:600;color:var(--text-mute);text-transform:uppercase;letter-spacing:.06em;padding:4px 0 0}.chord-grid{display:grid;grid-template-columns:repeat(6,16px);position:relative;border-top:1px solid var(--border)}.chord-grid.has-nut{border-top:3px solid var(--text)}.chord-fret-num{position:absolute;right:calc(100% + 3px);top:5px;font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.cg-cell{height:22px;border-bottom:1px solid var(--border);background:linear-gradient(90deg,transparent calc(50% - .75px),var(--text-mute) calc(50% - .75px),var(--text-mute) calc(50% + .75px),transparent calc(50% + .75px));display:flex;align-items:center;justify-content:center}.cg-dot{width:14px;height:14px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:7px;font-weight:700;color:#fff;line-height:1}.cg-barre{position:absolute;height:12px;background:var(--accent);border-radius:6px}.chord-notes{display:grid;grid-template-columns:repeat(6,16px);margin-top:2px}.cn{display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:9px;color:var(--text-dim);height:14px;font-weight:600}.cn-x{color:var(--text-mute);opacity:.4;font-weight:400}#triadsSection{padding:20px;gap:16px;overflow-y:auto;align-items:center}.triads-grid{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:640px;width:100%}.triad-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 14px;border-radius:8px;cursor:pointer;background:var(--bg-raised);border:1px solid var(--border);transition:border-color .15s;min-width:72px}.triad-card:hover{border-color:var(--border-hover)}.triad-card.playing{border-color:var(--accent)}.triad-top{display:flex;align-items:baseline;gap:6px}.triad-name{font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--text)}.triad-quality{font-family:var(--font-sans);font-size:10px;color:var(--text-mute)}.triad-numeral{font-family:var(--font-mono);font-size:11px;color:var(--accent);font-weight:600}.triad-notes{font-family:var(--font-mono);font-size:11px;color:var(--text-dim)}.triad-frets{display:flex;gap:6px;font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.prog-play{width:26px;height:26px;border-radius:50%;flex-shrink:0;background:var(--bg);color:var(--text-dim);border:1px solid var(--border);font-size:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.prog-play:hover{border-color:var(--border-hover)}.prog-play.active{background:var(--accent);color:#fff;border-color:var(--accent)}#progressionsSection{padding:20px;gap:16px;overflow-y:auto}.prog-grid{display:flex;flex-direction:column;gap:12px;max-width:640px;margin:0 auto;width:100%}.prog-card{display:flex;flex-direction:column;gap:6px;padding:14px 18px;border-radius:8px;cursor:pointer;background:var(--bg-raised);border:1px solid var(--border);transition:border-color .15s,box-shadow .15s}.prog-card:hover{border-color:var(--border-hover);box-shadow:0 2px 8px #00000014}.prog-card.playing{border-color:var(--accent);box-shadow:0 2px 12px #6366f126}.prog-top{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.prog-numerals{font-family:var(--font-mono);font-size:15px;font-weight:600;color:var(--text);letter-spacing:.02em}.prog-label{font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--text-mute);letter-spacing:.02em}.prog-chords{font-family:var(--font-mono);font-size:13px;font-weight:500;color:var(--accent);letter-spacing:.03em}.prog-extras{font-family:var(--font-mono);font-size:12px;font-weight:500;color:var(--text-dim);letter-spacing:.03em}.prog-extras-label{color:var(--text-mute);text-transform:uppercase;font-size:10px;letter-spacing:.08em;margin-right:6px}#rhythmSection{padding:20px;gap:16px;overflow-y:auto;align-items:center}.rhythm-transport{display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap;flex-shrink:0}.rhythm-play{width:40px;height:40px;border-radius:50%;background:var(--accent);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}.rhythm-play.active{background:#e8613c}.rhythm-play:before{content:"";width:0;height:0;margin-left:3px;border-style:solid;border-width:8px 0 8px 13px;border-color:transparent transparent transparent #fff}.rhythm-play.active:before{width:12px;height:12px;margin-left:0;border:none;background:#fff}.bk-prog{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;flex-shrink:0;min-height:30px}.bk-chord{display:inline-flex;align-items:center;gap:5px;padding:4px 8px 4px 10px;border-radius:6px;background:var(--bg-raised);border:1px solid var(--border);font-family:var(--font-mono);font-size:13px;color:var(--text-dim);cursor:pointer;transition:background .1s,color .1s,border-color .1s}.bk-chord:hover{border-color:var(--border-hover)}.bk-chord.current{background:var(--accent);border-color:var(--accent);color:#fff}.bk-x{font-size:13px;line-height:1;opacity:.5}.bk-chord:hover .bk-x{opacity:1}.bk-palette{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;flex-shrink:0}.bk-add{padding:3px 9px;border-radius:6px;background:transparent;border:1px dashed var(--border);font-family:var(--font-mono);font-size:12px;color:var(--text-mute);cursor:pointer;transition:color .1s,border-color .1s}.bk-add:hover{color:var(--accent);border-color:var(--accent)}.metro-toggle{display:flex;align-items:center;gap:4px;font-family:var(--font-sans);font-size:12px;color:var(--text-dim);cursor:pointer}#bpmInput,#strumBpm,#arpBpm{width:60px;padding:6px 8px;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);border-radius:6px;font-family:var(--font-mono);font-size:13px;text-align:center}.metro-beats{display:flex;gap:16px;justify-content:center;flex-shrink:0}.metro-dot{width:22px;height:22px;border-radius:50%;background:var(--bg-raised);border:2px solid var(--border);transition:background .08s,border-color .08s}.metro-dot.active{background:var(--accent);border-color:var(--accent)}.metro-dot.accent.active{background:#e8613c;border-color:#e8613c}.drum-header{display:flex;gap:8px;justify-content:center;flex-shrink:0}#drumPreset{padding:6px 10px;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:13px;cursor:pointer}.drum-clear{padding:6px 12px;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:13px;cursor:pointer}.drum-grid{display:grid;grid-template-columns:48px repeat(16,1fr);gap:2px;width:100%;max-width:580px}.drum-label{display:flex;align-items:center;justify-content:flex-end;padding-right:6px;font-family:var(--font-mono);font-size:10px;color:var(--text-dim);font-weight:600;height:28px}.drum-pad{height:28px;border-radius:4px;background:var(--bg-raised);border:1px solid var(--border);cursor:pointer;transition:background .08s,border-color .08s}.drum-pad:hover{border-color:var(--border-hover)}.drum-pad.on{background:var(--accent);border-color:var(--accent)}.drum-pad.step-active{box-shadow:inset 0 0 0 2px #e8613c}.drum-pad.beat-odd{background:var(--bg)}.drum-pad.beat-odd.on{background:var(--accent);border-color:var(--accent)}.prog-scale-info{display:flex;gap:4px;flex-wrap:wrap;justify-content:center;font-family:var(--font-mono);font-size:13px;flex-shrink:0}.prog-degree{display:flex;flex-direction:column;align-items:center;gap:1px;padding:4px 8px;border-radius:6px;background:var(--bg-raised);border:1px solid var(--border)}.prog-degree .pd-note{font-weight:600;color:var(--text);font-size:14px}.prog-degree .pd-num{font-size:10px;color:var(--text-mute)}.prog-chord-span{cursor:default}.prog-chord-span:hover{text-decoration:underline}.chord-popup{position:fixed;z-index:100;background:var(--bg-raised);border:1px solid var(--border);border-radius:8px;padding:10px 14px;box-shadow:0 4px 16px #00000026;pointer-events:none;display:flex;flex-direction:column;align-items:center;gap:4px}.chord-popup .cp-name{font-family:var(--font-sans);font-size:14px;font-weight:600;color:var(--text)}#strummingSection,#arpSection{padding:20px;gap:16px;overflow-y:auto}.pattern-grid{display:flex;flex-direction:column;gap:12px;max-width:640px;margin:0 auto;width:100%}.pat-card{display:flex;flex-direction:column;gap:8px;padding:14px 18px;border-radius:8px;cursor:pointer;background:var(--bg-raised);border:1px solid var(--border);transition:border-color .15s,box-shadow .15s}.pat-card:hover{border-color:var(--border-hover);box-shadow:0 2px 8px #00000014}.pat-card.playing{border-color:var(--accent);box-shadow:0 2px 12px #6366f126}.pat-top{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.pat-name{font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--text);letter-spacing:.02em}.pat-label{font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--text-mute);letter-spacing:.02em}.strum-beats{display:flex;gap:0;justify-content:center}.strum-beat{display:flex;flex-direction:column;align-items:center;gap:2px;width:32px}.strum-arrow{font-size:20px;height:28px;display:flex;align-items:center;justify-content:center;font-weight:700}.strum-arrow.down{color:var(--accent)}.strum-arrow.up{color:#e8613c}.strum-arrow.rest{color:var(--text-mute);font-size:14px;opacity:.3}.strum-count{font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.strum-count.on-beat{font-weight:700;color:var(--text-dim)}.arp-sequence{display:flex;gap:6px;justify-content:center;flex-wrap:wrap}.arp-note{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:10px;font-weight:600;background:var(--accent);color:#fff}.arp-note.bass{background:#e8613c}.tab-view{display:grid;gap:0;margin-top:4px}.tab-label{font-family:var(--font-mono);font-size:10px;font-weight:600;color:var(--text-mute);display:flex;align-items:center;justify-content:flex-end;padding-right:6px;height:18px}.tab-cell{height:18px;position:relative;display:flex;align-items:center;justify-content:center}.tab-cell:after{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--border)}.tab-fret{position:relative;z-index:1;background:var(--bg-raised);padding:0 3px;font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--accent);line-height:1}.tab-fret.muted{color:var(--text-mute)}.tab-cell.active:after{background:var(--accent);height:2px;opacity:.4}.tab-cell.active .tab-fret{color:#e8613c}.exercise-section{display:flex;flex-direction:column;gap:8px;max-width:640px;margin:0 auto;width:100%;border-top:1px solid var(--border);padding-top:16px}.exercise-title{font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--text)}.scale-tab{display:grid;gap:0;cursor:pointer;padding:8px 4px;background:var(--bg-raised);border:1px solid var(--border);border-radius:8px;transition:border-color .15s}.scale-tab:hover{border-color:var(--border-hover)}.scale-tab.playing{border-color:var(--accent);box-shadow:0 2px 12px #6366f126}.se-head{display:flex;flex-direction:column;align-items:center;gap:1px;padding:2px 0 6px}.se-chord{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--text)}.se-num{font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}@media(max-width:540px){#scalesSection{padding:12px;gap:12px}.board-inner{min-width:750px;max-height:260px}.dot{width:22px;height:22px;font-size:9px}.fret-num{font-size:10px}#chordsSection{padding:12px}.chords-grid{gap:10px}.chord-card{padding:10px 12px}#progressionsSection{padding:12px;gap:12px}.prog-card{padding:10px 14px}#rhythmSection{padding:12px;gap:12px}.drum-grid{gap:1px}.drum-pad{height:24px}.drum-label{font-size:9px}.iq-grid{grid-template-columns:repeat(3,1fr)}.cof-wrap{max-width:320px}}.section-explainer{font-family:var(--font-sans);font-size:12px;color:var(--text-dim);line-height:1.55;max-width:640px;margin:0 auto;width:100%;padding:10px 14px;background:var(--bg-raised);border-radius:8px;border:1px solid var(--border);flex-shrink:0}.section-explainer summary{cursor:pointer;font-weight:600;color:var(--text);list-style:none;display:flex;align-items:center;gap:6px}.section-explainer summary::-webkit-details-marker{display:none}.section-explainer summary:before{content:"▸";font-size:11px;color:var(--text-mute);transition:transform .15s}.section-explainer[open] summary:before{transform:rotate(90deg)}.section-explainer p{margin:0}.section-explainer summary+p{margin-top:6px}.section-explainer p+p{margin-top:4px}.section-explainer strong{color:var(--text);font-weight:600}#intervalsSection{padding:20px;gap:20px;align-items:center;justify-content:center}.iq-wrap{display:flex;flex-direction:column;gap:20px;align-items:center;max-width:480px;width:100%}.iq-header{display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:center}.iq-btn{padding:8px 16px;border-radius:6px;cursor:pointer;font-family:var(--font-sans);font-size:13px;font-weight:600;background:var(--accent);color:#fff;border:none;transition:opacity .15s}.iq-btn:disabled{opacity:.4;cursor:default}.iq-btn:hover:not(:disabled){opacity:.85}.iq-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;width:100%}.iq-choice{padding:12px 8px;border-radius:8px;cursor:pointer;font-family:var(--font-mono);font-size:14px;font-weight:600;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);transition:border-color .15s,background .15s}.iq-choice:hover:not(:disabled){border-color:var(--border-hover)}.iq-choice:disabled{cursor:default;opacity:.6}.iq-choice.correct{background:#4ecb71;color:#fff;border-color:#4ecb71;opacity:1}.iq-choice.wrong{background:#e8613c;color:#fff;border-color:#e8613c;opacity:1}.iq-feedback{font-family:var(--font-sans);font-size:15px;font-weight:600;min-height:24px;text-align:center}.iq-feedback.correct{color:#4ecb71}.iq-feedback.wrong{color:#e8613c}.iq-score{font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--text);text-align:center}#cagedSection{padding:20px;gap:16px;overflow:hidden}.caged-legend{display:flex;gap:8px;justify-content:center;flex-shrink:0}.caged-chip{padding:3px 10px;border-radius:12px;font-family:var(--font-sans);font-size:12px;font-weight:700;color:#fff;letter-spacing:.03em}#circleSection{padding:20px;gap:16px;overflow-y:auto;align-items:center}.cof-wrap{max-width:420px;width:100%;flex-shrink:0}#cofSvg{width:100%;height:auto}.cof-seg:hover{opacity:.85}.cof-info{max-width:480px;width:100%}.cof-chords{display:flex;gap:4px;flex-wrap:wrap;justify-content:center}.cof-chord{display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 10px;border-radius:6px;background:var(--bg-raised);border:1px solid var(--border)}.cof-cn{font-family:var(--font-mono);font-size:14px;font-weight:600;color:var(--text)}.cof-num{font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.cof-adjacent{text-align:center;margin-top:8px;font-family:var(--font-sans);font-size:13px;color:var(--text-dim)}.cof-hint{text-align:center;font-family:var(--font-sans);font-size:14px;color:var(--text-mute)}#tuningSection{padding:20px;align-items:center;justify-content:center}.tuner-wrap{display:flex;flex-direction:column;align-items:center;gap:20px;max-width:420px;width:100%}.tuning-pick{display:flex;align-items:center;gap:10px;width:100%}.tuning-pick label{font-size:14px;font-weight:600;color:var(--text-dim);white-space:nowrap}.tuning-pick select{flex:1;padding:6px 10px;background:var(--bg-raised);color:var(--text);border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:13px;cursor:pointer}.tuner-note{font-family:var(--font-mono);font-size:64px;font-weight:700;line-height:1;color:var(--text);text-align:center;min-height:64px}.tuner-note.in-tune{color:#4ecb71}.tuner-meter{position:relative;width:100%;height:56px;background:var(--bg-raised);border:1px solid var(--border);border-radius:8px;overflow:hidden}.tuner-center{position:absolute;left:50%;top:6px;bottom:6px;width:2px;margin-left:-1px;background:var(--text-mute);opacity:.5}.tuner-needle{position:absolute;left:50%;top:4px;bottom:4px;width:4px;margin-left:-2px;border-radius:2px;background:var(--accent);transition:left .08s ease-out,background .08s}.tuner-needle.in-tune{background:#4ecb71}.tuner-cents{font-family:var(--font-mono);font-size:14px;color:var(--text-dim);min-height:18px}.tuner-strings{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.tuner-string{padding:6px 12px;border-radius:6px;background:var(--bg-raised);border:1px solid var(--border);font-family:var(--font-mono);font-size:14px;font-weight:600;color:var(--text-dim);transition:all .1s;cursor:pointer}.tuner-string:hover{border-color:var(--accent);color:var(--accent)}.tuner-string.playing{background:var(--accent);border-color:var(--accent);color:#fff}.tuner-string.near{border-color:var(--accent);color:var(--accent)}.tuner-string.in-tune{background:#4ecb71;border-color:#4ecb71;color:#fff}.tuner-hint{font-family:var(--font-sans);font-size:13px;color:var(--text-mute);text-align:center}.tuning-info{width:100%;font-size:13px;color:var(--text-dim)}.tuning-info summary{cursor:pointer;font-weight:600;padding:8px 0;color:var(--text-dim)}.tuning-info-body{display:flex;flex-direction:column;gap:8px;padding:8px 0}.tuning-info-body p{margin:0;line-height:1.5}.tuning-info-body strong{color:var(--text)}