:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#151515;--panel:#20201d;--panel-strong:#282620;--panel-soft:#1a1a18;--wood:#6b4428;--wood-dark:#3f2b1c;--text:#f3efe7;--muted:#a9a196;--faint:#736b61;--line:#36332d;--line-strong:#4b453d;--root:#5ef2a0;--chord:#95f08d;--scale:#54c7ec;--modal:#b48cff;--tension:#f4c95d;--outside:#f06565;--passing:#f59f52;--shadow:0 18px 50px #00000059}*{box-sizing:border-box}html,body,#root{min-height:100%}body{background:linear-gradient(180deg, #ffffff08, transparent 220px), var(--bg);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,select{font:inherit}button{color:inherit}.app-shell{min-height:100vh;padding:18px}.topbar{grid-template-columns:240px minmax(0,1fr);align-items:stretch;gap:18px;max-width:1500px;margin:0 auto 18px;display:grid}.brand{border:1px solid var(--line);background:var(--panel);min-height:76px;box-shadow:var(--shadow);border-radius:8px;align-items:center;gap:12px;padding:14px 16px;display:flex}.brand svg{color:var(--root);flex:none}.brand h1,.brand p,.section-heading h2,.section-heading p,.practice-card h3,.practice-card p,.explanation h3,.candidate-list h3{margin:0}.brand h1{font-size:20px;line-height:1.1}.brand p{color:var(--muted);margin-top:3px;font-size:12px;line-height:1.4}.toolbar{border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);border-radius:8px;grid-template-columns:repeat(6,minmax(120px,1fr));gap:10px;padding:12px;display:grid}.select-field,.segmented-field{flex-direction:column;gap:7px;min-width:0;display:flex}.select-field span,.segmented-field>span{color:var(--muted);text-transform:uppercase;font-size:11px;font-weight:700;line-height:1}.select-field select{border:1px solid var(--line-strong);background:var(--panel-soft);width:100%;min-height:36px;color:var(--text);border-radius:7px;padding:0 30px 0 10px;font-size:13px}.segmented-control{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;display:grid}.segmented-control button,.demo-pad button{border:1px solid var(--line-strong);background:var(--panel-soft);min-height:36px;color:var(--muted);cursor:pointer;border-radius:7px;font-size:12px;font-weight:700}.segmented-control button.active,.demo-pad button.active{color:var(--root);background:#5ef2a01f;border-color:#5ef2a0b3}.workspace{grid-template-columns:minmax(0,1fr) 330px;gap:18px;max-width:1500px;margin:0 auto;display:grid}.fretboard-zone,.inspector,.practice-dock{border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);border-radius:8px}.fretboard-zone{min-width:0;overflow:hidden}.section-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:18px;padding:16px 18px 12px;display:flex}.section-heading h2{font-size:20px;line-height:1.2}.section-heading p{color:var(--muted);margin-top:4px;font-size:13px}.legend{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;gap:9px;font-size:12px;font-weight:650;display:flex}.legend span{align-items:center;gap:6px;display:inline-flex}.legend-dot{border-radius:999px;width:9px;height:9px;display:inline-block}.legend-dot.root{background:var(--root)}.legend-dot.chord{background:var(--chord)}.legend-dot.modal{background:var(--modal)}.legend-dot.scale{background:var(--scale)}.fretboard-scroll{padding:16px 18px 20px;overflow-x:auto}.fretboard-grid{border:1px solid var(--line-strong);background:linear-gradient(90deg, #ffffff14, transparent 18%), linear-gradient(180deg, var(--wood), var(--wood-dark));border-radius:8px;min-width:max-content;display:grid;overflow:hidden}.fret-row-fragment{display:contents}.fret-corner,.fret-number,.string-label,.fret-cell{min-height:54px}.fret-corner,.fret-number{color:var(--muted);background:#00000038;border-bottom:1px solid #ffffff1f;place-items:center;font-size:11px;font-weight:800;display:grid}.string-label{z-index:2;background:#191612f0;border-top:1px solid #ffffff1a;border-right:1px solid #ffffff29;flex-direction:column;justify-content:center;gap:3px;padding:0 10px;display:flex;position:sticky;left:0}.string-label span{color:var(--muted);font-size:10px;font-weight:800}.string-label strong{font-size:13px}.fret-cell{cursor:pointer;background:0 0;border:0;border-top:1px solid #ffffff1a;border-left:2px solid #f5e6c857;place-items:center;width:46px;padding:0;display:grid;position:relative}.fret-cell.open-fret{border-left-color:#f5e6c8a6}.fret-cell:hover{background:#ffffff14}.string-line{background:linear-gradient(90deg,#f4eedc3d,#f4eedcbd,#f4eedc3d);height:2px;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}.note-marker{z-index:1;width:31px;height:31px;color:var(--text);text-align:center;white-space:pre-line;background:#151515d1;border:1px solid #ffffff2e;border-radius:999px;place-items:center;font-size:10px;font-weight:850;line-height:1;display:grid;position:relative;box-shadow:0 4px 14px #00000047}.fret-cell.scale .note-marker{color:#d9f8ff;background:#54c7ec2e;border-color:#54c7ec8f}.fret-cell.chord .note-marker{color:#e8ffe6;background:#95f08d2e;border-color:#95f08d9e}.fret-cell.modal .note-marker{color:#f1e9ff;background:#b48cff33;border-color:#b48cffb3}.fret-cell.root .note-marker{color:#e6fff1;background:#5ef2a038;border-color:#5ef2a0d1}.fret-cell.played .note-marker{outline-offset:2px;outline:3px solid #f4c95dd1}.fret-dot,.double-dot{z-index:0;pointer-events:none;position:absolute}.fret-dot{background:#fff3;border-radius:999px;width:7px;height:7px}.double-dot{flex-direction:column;gap:20px;display:flex}.double-dot i{background:#fff3;border-radius:999px;width:7px;height:7px;display:block}.inspector{flex-direction:column;gap:16px;min-width:0;padding:16px;display:flex}.live-input{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px;padding:10px}.live-input button{width:100%;min-height:42px;color:var(--root);cursor:pointer;background:#5ef2a017;border:1px solid #5ef2a07a;border-radius:7px;justify-content:center;align-items:center;gap:8px;font-size:13px;font-weight:850;display:flex}.live-input button:hover:not(:disabled),.live-input button.active{background:#5ef2a029;border-color:#5ef2a0d1}.live-input button:disabled{cursor:wait;opacity:.65}.live-input p{min-height:18px;color:var(--muted);margin:8px 2px 0;font-size:11px;line-height:1.45}.live-input.error{border-color:#f0656580}.live-input.error p{color:#ffb0b0}.meter-strip{border:1px solid var(--line);background:var(--panel-soft);min-height:34px;color:var(--muted);border-radius:8px;align-items:center;gap:9px;padding:8px 10px;font-size:12px;font-weight:800;display:flex}.status-light{background:var(--scale);border-radius:999px;width:10px;height:10px;box-shadow:0 0 18px}.status-light.chordTone,.status-light.target{background:var(--root);color:var(--root)}.status-light.modalColor{background:var(--modal);color:var(--modal)}.status-light.tension{background:var(--tension);color:var(--tension)}.status-light.outside{background:var(--outside);color:var(--outside)}.status-light.passingTone{background:var(--passing);color:var(--passing)}.played-note{border-bottom:1px solid var(--line);grid-template-columns:1fr auto;align-items:end;gap:2px 12px;padding-bottom:14px;display:grid}.played-note span{color:var(--muted);text-transform:uppercase;font-size:12px;font-weight:800}.played-note strong{grid-row:span 2;font-size:62px;line-height:.9}.played-note em{color:var(--muted);font-size:14px;font-style:normal;font-weight:800}.reference-tone{background:#54c7ec14;border:1px solid #54c7ec57;border-radius:8px;grid-template-columns:22px 1fr auto;align-items:center;gap:8px;min-height:40px;padding:9px 10px;display:grid}.reference-tone svg{color:var(--scale)}.reference-tone span{color:var(--muted);text-transform:uppercase;font-size:12px;font-weight:800}.reference-tone strong{color:var(--text);font-size:14px}.feedback-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.metric{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px;min-height:64px;padding:10px}.metric span{color:var(--muted);text-transform:uppercase;font-size:11px;font-weight:800;display:block}.metric strong{margin-top:6px;font-size:20px;line-height:1;display:block}.explanation,.candidate-list{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px;padding:14px}.explanation h3,.candidate-list h3{color:var(--text);font-size:13px;line-height:1.2}.explanation p,.candidate-list p{color:var(--muted);margin:9px 0 0;font-size:13px;line-height:1.5}.candidate-pills{flex-wrap:wrap;gap:7px;margin-top:10px;display:flex}.candidate-pill{color:#ffe6a3;background:#f4c95d1a;border:1px solid #f4c95d73;border-radius:999px;align-items:center;min-height:28px;padding:0 9px;font-size:12px;font-weight:800;display:inline-flex}.demo-pad{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid}.demo-pad button{justify-content:center;align-items:center;gap:5px;display:inline-flex}.practice-dock{grid-template-columns:repeat(3,minmax(190px,1fr)) minmax(300px,1.5fr);gap:12px;max-width:1500px;margin:18px auto 0;padding:12px;display:grid}.practice-card,.heatmap-panel{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px}.practice-card{align-items:center;gap:12px;min-height:112px;padding:14px;display:flex}.practice-icon{width:36px;height:36px;color:var(--scale);background:#54c7ec1f;border-radius:8px;flex:none;place-items:center;display:grid}.practice-card h3{color:var(--muted);text-transform:uppercase;font-size:12px;line-height:1.2}.practice-card strong{margin-top:8px;font-size:18px;line-height:1.2;display:block}.practice-card p{color:var(--muted);margin-top:5px;font-size:12px;line-height:1.4}.heatmap-panel{min-height:112px;padding:14px}.heatmap-heading{color:var(--muted);text-transform:uppercase;align-items:center;gap:8px;font-size:12px;font-weight:800;display:flex}.heatmap-heading svg{color:var(--tension)}.heatmap-bars{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px 12px;margin-top:14px;display:grid}.heatmap-item{color:var(--muted);grid-template-columns:28px minmax(0,1fr);align-items:center;gap:7px;font-size:11px;font-weight:850;display:grid}.heatmap-track{background:#ffffff17;border-radius:999px;height:7px;overflow:hidden}.heatmap-track i{border-radius:inherit;background:linear-gradient(90deg, var(--outside), var(--tension), var(--root));height:100%;display:block}.muted{color:var(--muted)}@media (width<=1180px){.topbar,.workspace,.practice-dock{grid-template-columns:1fr}.toolbar{grid-template-columns:repeat(3,minmax(0,1fr))}.inspector{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.played-note,.live-input,.demo-pad{grid-column:span 2}}@media (width<=720px){.app-shell{padding:10px}.toolbar,.inspector,.practice-dock{grid-template-columns:1fr}.played-note,.live-input,.demo-pad{grid-column:auto}.section-heading{flex-direction:column;align-items:flex-start}.legend{justify-content:flex-start}.fretboard-scroll{padding:12px}.played-note strong{font-size:52px}.feedback-grid{grid-template-columns:1fr}}