.App{text-align:center;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center}.App-header{background-color:#282c34;padding:2rem;border-radius:8px;color:#fff}.App-header h1{margin:0 0 1rem}.chords-page{max-width:1200px;margin:0 auto;padding:2rem}.chords-page h1{text-align:center;color:#1a1a1a;margin-bottom:2rem}.chord-selectors{display:flex;gap:20px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}.selector-group{display:flex;flex-direction:column;gap:8px;min-width:150px}.selector-group select{padding:8px 12px;font-size:1rem;border:2px solid #ddd;border-radius:6px;background-color:#fff;cursor:pointer;transition:border-color .2s}.chord-position-display{background:#fff;border-radius:1rem;padding:2rem;box-shadow:0 4px 6px #0000001a}.position-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.position-header h2{margin:0;color:#1a1a1a}.position-counter{background:#f3f4f6;padding:.5rem 1rem;border-radius:.5rem;font-weight:600;color:#6b7280}.fretboard-container{display:flex;justify-content:center;margin:2rem 0;overflow-x:auto;padding:1rem}.position-navigation{display:flex;justify-content:center;gap:1rem;margin-top:2rem;flex-wrap:wrap}.nav-button{padding:.75rem 1.5rem;font-size:1rem;font-weight:600;border:2px solid #2563eb;background:#fff;color:#2563eb;border-radius:.5rem;cursor:pointer;transition:all .2s}.nav-button:hover:not(:disabled){background:#2563eb;color:#fff}.nav-button:disabled{opacity:.4;cursor:not-allowed;border-color:#d1d5db;color:#9ca3af}.view-details-button{padding:.75rem 1.5rem;font-size:1rem;font-weight:600;background:#2563eb;color:#fff;border-radius:.5rem;text-decoration:none;transition:all .2s;display:inline-block}.view-details-button:hover{background:#1d4ed8}.chord-notes-display{text-align:center;margin-top:1.5rem;padding:1rem;background:#f9fafb;border-radius:.5rem;font-size:1.1rem}.no-positions{text-align:center;padding:4rem 2rem;background:#f9fafb;border-radius:1rem;border:2px dashed #d1d5db}.no-positions p{color:#6b7280;font-size:1.1rem;margin:.5rem 0}.help-text{font-size:.95rem;color:#9ca3af}.chord-instance{max-width:600px;margin:40px auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif}.chord-display{background:#fff;border-radius:12px;padding:40px;box-shadow:0 4px 6px #0000001a}.chord-name{text-align:center;font-size:2.5rem;margin:0 0 20px;color:#1a1a1a;font-weight:600}.chord-notes{text-align:center;font-size:1.2rem;margin-bottom:40px;color:#666}.notes-label{font-weight:500;margin-right:8px}.notes-list{color:#2563eb;font-weight:600}.chord-chart-svg{display:flex;justify-content:center;margin:30px auto}.chord-chart-svg svg{max-width:100%;height:auto}.piano-keyboard{margin:40px auto 30px;text-align:center}.piano-keyboard h3{font-size:1.2rem;color:#1a1a1a;margin-bottom:20px;font-weight:600}.piano-keyboard svg{max-width:100%;height:auto;filter:drop-shadow(0 4px 6px rgba(0,0,0,.1))}.chord-chart{display:none}.fretboard{flex:1;position:relative}.fret-position-indicator{position:absolute;left:0;top:40px;font-size:.9rem;color:#666;font-weight:600}.grid-container{display:flex;gap:10px;align-items:flex-start;position:relative}.fret-numbers{display:flex;flex-direction:column;padding-top:35px}.fret-number{height:45px;display:flex;align-items:center;justify-content:center;font-size:.85rem;color:#666;font-weight:500;min-width:18px;box-sizing:border-box}.grid-wrapper{flex:1;display:flex;flex-direction:column}.top-markers{display:flex;height:30px;margin-bottom:5px;padding:0 12px}.marker-cell{flex:1;display:flex;align-items:center;justify-content:center}.mute-marker{color:#dc2626;font-size:1.1rem;font-weight:700}.open-marker{color:#1a1a1a;font-size:1.3rem;font-weight:400}.nut{height:4px;background:#1a1a1a;margin:0 12px 2px}.grid{border-top:2px solid #999}.fret-row{display:flex;height:45px;position:relative;box-sizing:border-box;padding:0 12px;border-bottom:2px solid #999}.fret-row:after{display:none}.fret-row:last-child{border-bottom:2px solid #999}.fret-row:last-child:after{display:none}.string-cell{flex:1;position:relative;display:flex;align-items:center;justify-content:center}.string-line{position:absolute;width:1.5px;height:100%;background:#999;left:50%;transform:translate(-50%)}.finger-dot{width:26px;height:26px;background:#1a1a1a;border-radius:50%;position:relative;z-index:10;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 3px #0000004d}.finger-number{color:#fff;font-size:.7rem;font-weight:600}.string-labels-bottom{display:flex;margin-top:6px;padding:0 12px}.string-label-bottom{flex:1;text-align:center;font-weight:600;color:#666;font-size:.8rem;letter-spacing:.5px}.chord-info{display:flex;gap:15px;justify-content:center;margin-top:30px;flex-wrap:wrap;align-items:center}.info-item{color:#666;font-size:.9rem;display:flex;align-items:center}.info-badge{background:#f0f9ff;color:#0369a1;padding:6px 12px;border-radius:20px;font-size:.85rem;font-weight:500}.debug-info{margin-top:40px;padding:20px;background:#f9fafb;border-radius:8px}.debug-info summary{cursor:pointer;font-weight:600;color:#666}.debug-info pre{margin-top:10px;overflow-x:auto;font-size:.85rem}.chord-instance.error,.chord-instance.loading{text-align:center;padding:60px 20px}.error h2{color:#dc2626}.loading p{color:#666;font-size:1.1rem}.display-mode-toggle{margin:15px 0;padding:10px;background-color:#f5f5f5;border-radius:6px;display:flex;align-items:center;justify-content:center}.display-mode-toggle label{font-weight:600;color:#333}.display-mode-toggle select{cursor:pointer;background-color:#fff}.display-mode-toggle select:hover{border-color:#2563eb}.display-mode-toggle select:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb1a}.keys-page{padding:2rem;max-width:1200px;margin:0 auto}.keys-page h1{text-align:center;color:#1a1a1a;margin-bottom:2rem}.key-selectors{display:flex;gap:2rem;justify-content:center;margin-bottom:2rem;flex-wrap:wrap}.selector-group{display:flex;flex-direction:column;gap:.5rem}.selector-group label{font-weight:600;color:#333;font-size:.9rem}.selector-group select{padding:.5rem 1rem;font-size:1rem;border:2px solid #ddd;border-radius:4px;background-color:#fff;cursor:pointer;min-width:150px}.selector-group select:hover{border-color:#2563eb}.selector-group select:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 3px #2563eb1a}.keys-display{display:flex;flex-direction:column;gap:1.5rem}.key-card{background:#fff;border:2px solid #e5e7eb;border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px #0000001a}.key-header{margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid #e5e7eb}.key-header h2{margin:0;color:#1a1a1a;text-transform:capitalize}.key-chords{display:flex;flex-direction:row;flex-wrap:wrap;gap:15px;justify-content:flex-start;align-items:center}.chord-item{display:flex;flex-direction:row;align-items:center;gap:8px;padding:8px 12px;background-color:#f5f5f5;border-radius:4px;white-space:nowrap}.chord-label{font-weight:700;color:#2563eb;min-width:40px;font-size:1.1rem}.chord-name{color:#1a1a1a;font-weight:500;font-size:1rem}.chord-name.clickable{cursor:pointer;color:#007bff;transition:color .2s ease,text-decoration .2s ease}.chord-name.clickable:hover{color:#0056b3;text-decoration:underline}.chord-name.clickable:active{color:#004085}.no-keys{text-align:center;padding:3rem;color:#666}.no-keys p{font-size:1.1rem}@media (max-width: 768px){.keys-page{padding:1rem}.key-selectors{flex-direction:column;align-items:stretch}.selector-group select{width:100%}.key-chords{grid-template-columns:1fr}}.scales-page{max-width:1400px;margin:0 auto}.page-navigation{display:flex;gap:15px;justify-content:center;margin:20px 0 30px;flex-wrap:wrap}.nav-button{padding:10px 20px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;text-decoration:none;transition:all .2s ease}.nav-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.scale-controls{display:flex;gap:30px;justify-content:center;margin:30px 0;flex-wrap:wrap}.control-group{display:flex;flex-direction:column;gap:8px}.control-group label{font-weight:600;color:#2c3e50;font-size:14px}.scale-select{padding:10px 15px;border:2px solid #ddd;border-radius:8px;font-size:16px;background:#fff;cursor:pointer;transition:border-color .2s;min-width:200px}.scale-select:hover{border-color:#667eea}.scale-select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.scale-info-card{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:25px;border-radius:12px;margin:30px 0;box-shadow:0 4px 16px #667eea4d}.scale-info-card h3{margin:0 0 20px;font-size:24px}.scale-details{display:flex;flex-direction:column;gap:12px}.detail-item{font-size:16px;line-height:1.6}.detail-item strong{margin-right:8px}.position-navigator{display:flex;justify-content:space-between;align-items:center;margin:30px 0;padding:20px;background:#f8f9fa;border-radius:12px;gap:20px}.position-info{display:flex;flex-direction:column;align-items:center;gap:5px}.position-label{font-weight:600;font-size:18px;color:#2c3e50}.starting-fret{font-size:14px;color:#7f8c8d}.nav-arrow{padding:12px 24px;background:#667eea;color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s;font-size:16px}.nav-arrow:hover:not(:disabled){background:#764ba2;transform:translate(0) scale(1.05)}.nav-arrow:disabled{background:#bdc3c7;cursor:not-allowed;opacity:.6}.fretboard-section{margin:40px 0}.fretboard-section h3{margin-bottom:20px;color:#2c3e50}.fretboard-container{background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 12px #0000001a;overflow-x:auto}.fretboard{display:flex;flex-direction:column;min-width:800px}.fret-markers{margin-bottom:10px}.fret-marker-row{display:flex;padding-left:60px}.fret-marker{flex:1;text-align:center;font-weight:600;color:#7f8c8d;font-size:14px;min-width:120px}.guitar-string{display:flex;align-items:center;position:relative;height:60px;border-bottom:2px solid #34495e}.guitar-string:first-child{border-top:2px solid #34495e}.string-label{width:50px;text-align:center;font-weight:700;color:#2c3e50;font-size:16px}.fret-position{flex:1;display:flex;align-items:center;justify-content:center;position:relative;min-width:120px;border-right:2px solid #bdc3c7}.fret-position:first-of-type{border-left:3px solid #2c3e50}.note-marker{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;transition:transform .2s;cursor:pointer}.note-marker:hover{transform:scale(1.15)}.root-note{background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff;box-shadow:0 4px 12px #e74c3c66}.scale-note{background:linear-gradient(135deg,#3498db,#2980b9);color:#fff;box-shadow:0 4px 12px #3498db4d}.legend{display:flex;gap:30px;justify-content:center;margin-top:25px;padding:15px;background:#f8f9fa;border-radius:8px}.legend-item{display:flex;align-items:center;gap:10px;font-size:14px;color:#2c3e50}.legend-marker{width:20px;height:20px;border-radius:50%;display:inline-block}.legend-marker.root-note{background:linear-gradient(135deg,#e74c3c,#c0392b)}.legend-marker.scale-note{background:linear-gradient(135deg,#3498db,#2980b9)}.fingering-pattern{margin-top:30px;padding:20px;background:#f8f9fa;border-radius:12px;border-left:4px solid #667eea}.fingering-pattern h4{margin:0 0 10px;color:#2c3e50}.fingering-pattern p{margin:0;color:#555;line-height:1.6}.no-results{text-align:center;padding:3rem;background:#f8f9fa;border-radius:12px;margin-top:2rem}.no-results p{color:#7f8c8d;font-size:1.1rem;margin:.5rem 0}@media (max-width: 768px){.scale-controls{flex-direction:column;align-items:stretch}.control-group,.scale-select{width:100%}.position-navigator{flex-direction:column;gap:15px}.fretboard-container{padding:15px}.note-marker{width:32px;height:32px;font-size:12px}.fret-position,.fret-marker{min-width:80px}}.reverse-chord-lookup{max-width:1200px;margin:0 auto;padding:2rem}.page-header{text-align:center;margin-bottom:2.5rem}.page-header h1{font-size:2.5rem;margin-bottom:.5rem;color:#2c3e50}.page-header p{font-size:1.1rem;color:#7f8c8d}.note-selection-section{background:#f8f9fa;padding:2rem;border-radius:12px;margin-bottom:2rem;box-shadow:0 2px 8px #0000001a}.note-selection-section h2{margin-bottom:1.5rem;color:#2c3e50}.note-buttons{display:flex;flex-wrap:wrap;gap:1rem;margin:1.5rem 0;justify-content:center}.note-btn{padding:1rem 1.5rem;font-size:1.2rem;font-weight:600;border:2px solid #34495e;background:#fff;border-radius:8px;cursor:pointer;transition:all .2s ease;min-width:60px}.note-btn:hover{background:#ecf0f1;transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.note-btn.selected{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:#667eea;transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.selected-notes{padding:1.5rem;background:#fff;border-radius:8px;font-size:1.1rem;border-left:4px solid #667eea}.selected-notes strong{color:#2c3e50;margin-right:.5rem}.notes-list{color:#667eea;font-weight:600}.actions{display:flex;gap:1rem;justify-content:center;margin-bottom:2rem;flex-wrap:wrap}.btn-primary,.btn-secondary{padding:1rem 2rem;font-size:1.1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;min-width:150px}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #667eea66}.btn-primary:disabled{background:#bdc3c7;cursor:not-allowed;transform:none}.btn-secondary{background:#95a5a6;color:#fff}.btn-secondary:hover{background:#7f8c8d;transform:translateY(-2px);box-shadow:0 6px 16px #7f8c8d4d}.results-section{margin-top:2rem}.results-section h2{margin-bottom:1.5rem;color:#2c3e50}.chord-results{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.chord-card{background:#fff;border:2px solid #ecf0f1;border-radius:12px;padding:1.5rem;transition:all .2s ease;position:relative;overflow:hidden}.chord-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(135deg,#667eea,#764ba2)}.chord-card:hover{box-shadow:0 8px 24px #0000001f;transform:translateY(-4px);border-color:#667eea}.chord-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.chord-header h3{margin:0;color:#2c3e50;font-size:1.5rem}.match-badge{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.25rem .75rem;border-radius:20px;font-size:.9rem;font-weight:600}.chord-notes,.chord-intervals{color:#555;margin:.75rem 0;line-height:1.6}.chord-notes strong,.chord-intervals strong{color:#2c3e50}.no-results{text-align:center;padding:3rem;background:#f8f9fa;border-radius:12px;color:#7f8c8d;font-size:1.1rem}@media (max-width: 768px){.reverse-chord-lookup{padding:1rem}.page-header h1{font-size:2rem}.note-buttons{gap:.75rem}.note-btn{padding:.75rem 1rem;font-size:1rem;min-width:50px}.chord-results{grid-template-columns:1fr}}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f0f0f0}