@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Playfair+Display:wght@400;600;700;900&display=swap";:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-color:#000;--panel-bg:#111;--panel-border:#333;--text-primary:#fff;--text-secondary:#9ca3af;--accent-primary:#fff;--accent-secondary:#fff;--accent-glow:transparent;--fretboard-bg:#000;--string-color:#d1d5db;--fret-wire:#333;--fret-dot-color:#222;--note-root-bg:#fff;--note-scale-bg:#444;--note-text:#fff;--note-border:#777;--pentatonic-glow:0 0 15px #fffc;--string-gradient-1:linear-gradient(to right, #111, #666, #111);--string-gradient-2:linear-gradient(to right, #111, #888, #111);--sidenav-bg:#0a0a0a;--nav-active-bg:#222;--nav-hover-bg:#111;--invert-filter:none;--select-chevron:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e")}:root.light-mode{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg-color:#f3f4f6;--panel-bg:#fff;--panel-border:#d1d5db;--text-primary:#111827;--text-secondary:#4b5563;--accent-primary:#111827;--accent-secondary:#111827;--fretboard-bg:#f9fafb;--string-color:#4b5563;--fret-wire:#9ca3af;--fret-dot-color:#e5e7eb;--note-root-bg:#111827;--note-scale-bg:#d1d5db;--note-text:#111827;--note-border:#9ca3af;--pentatonic-glow:0 0 15px #0006;--string-gradient-1:linear-gradient(to right, #ddd, #999, #ddd);--string-gradient-2:linear-gradient(to right, #ccc, #777, #ccc);--sidenav-bg:#fff;--nav-active-bg:#f3f4f6;--nav-hover-bg:#f9fafb;--invert-filter:invert(1);--select-chevron:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e")}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;max-width:100vw;overflow-x:hidden}body{background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,sans-serif;transition:background-color .3s,color .3s}h1,h2,h3,h4,h5,h6{letter-spacing:-.01em;font-family:Playfair Display,serif;font-weight:600}.app-container{flex-direction:column;gap:2rem;max-width:1400px;min-height:100vh;margin:0 auto;padding:2rem;display:flex}.glass-panel{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:0;transition:border-color .3s,background-color .3s}.glass-panel:hover{border-color:var(--text-primary)}.app-header{border-bottom:1px solid var(--panel-border);background:var(--bg-color);border-radius:0;justify-content:space-between;align-items:center;padding:1.5rem 3rem;display:flex}.app-header.glass-panel:hover{border-color:var(--panel-border)}.logo h1{color:var(--text-primary);font-size:2rem;font-weight:700}.logo span{color:var(--text-secondary)}.tabs{gap:1rem;display:flex}.tab-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;padding:.5rem 1rem;font-family:Inter,sans-serif;font-size:1rem;font-weight:500;transition:all .3s}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--text-primary);border-bottom:2px solid var(--text-primary)}.main-content{flex-direction:column;flex:1;display:flex}.explore-mode,.practice-mode{flex-direction:column;gap:2rem;animation:.5s fadeIn;display:flex}.controls{flex-wrap:wrap;justify-content:center;gap:3rem;padding:2rem;display:flex}.control-group{flex-direction:column;gap:.5rem;display:flex}.control-group label{text-transform:uppercase;color:var(--text-secondary);font-size:.875rem;font-weight:500}.control-group select{appearance:none;background:var(--panel-bg);border:1px solid var(--panel-border);color:var(--text-primary);cursor:pointer;background-image:var(--select-chevron);filter:none;background-position:right 1rem center;background-repeat:no-repeat;background-size:1em;border-radius:0;outline:none;padding:.75rem 3rem .75rem 1rem;font-family:Inter,sans-serif;font-size:1rem}.control-group select:focus,.control-group select:hover{border-color:var(--text-primary)}select option{background-color:var(--panel-bg);color:var(--text-primary)}.fretboard-wrapper{flex-direction:column;gap:2rem;padding:3rem 2rem;display:flex}.shape-info{justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.shape-info h2{font-size:1.5rem}.pentatonic-legend{color:var(--text-secondary);align-items:center;gap:.75rem;font-size:.875rem;display:flex}.pentatonic-shadow-demo{background:var(--note-scale-bg);width:16px;height:16px;box-shadow:var(--pentatonic-glow);border:2px solid var(--text-primary);border-radius:50%;display:inline-block}.fretboard-container{width:100%;padding-bottom:1rem;overflow-x:auto}.fretboard{background:var(--fretboard-bg);border:1px solid var(--panel-border);min-width:1200px;height:240px;position:relative}.frets-bg{display:flex;position:absolute;inset:0}.fret-bg{border-right:2px solid var(--fret-wire);box-sizing:border-box;flex:1;position:relative}.fret-bg.nut{border-right:4px solid var(--text-primary);background:var(--panel-bg);flex:0 0 40px}.dot{background:var(--fret-dot-color);border-radius:50%;width:16px;height:16px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.double-dot{border-top:16px solid var(--fret-dot-color);border-bottom:16px solid var(--fret-dot-color);background:0 0;border-radius:0;width:16px;height:80px}.strings-container{flex-direction:column;justify-content:space-around;padding:10px 0;display:flex;position:absolute;inset:0}.guitar-string{align-items:center;height:20px;display:flex;position:relative}.guitar-string:before{content:"";background:var(--string-gradient-1);z-index:1;height:1px;position:absolute;left:0;right:0}.guitar-string:nth-child(4):before,.guitar-string:nth-child(5):before,.guitar-string:nth-child(6):before{background:var(--string-gradient-2);height:2px}.fret-cell{z-index:2;flex:1;justify-content:center;align-items:center;height:100%;display:flex;position:relative}.fret-cell.open-string-cell{flex:0 0 40px}.note-circle{width:24px;height:24px;color:var(--note-text);border-radius:50%;justify-content:center;align-items:center;font-size:.75rem;font-weight:600;transition:all .2s;animation:.3s popIn;display:flex}.scale-note{background:var(--note-scale-bg);border:1px solid var(--note-border)}.root-note{background:var(--note-root-bg);color:var(--bg-color);width:28px;height:28px}.pentatonic-shadow{box-shadow:var(--pentatonic-glow);border:2px solid var(--text-primary)}.fret-numbers{min-width:1200px;margin-top:10px;padding-left:20px;display:flex}.fret-num{text-align:center;color:var(--text-secondary);flex:1;font-size:.75rem}.fret-num:first-child{flex:0 0 20px}.practice-header{text-align:center;width:100%;margin-bottom:1rem}.practice-header h2{margin-bottom:.5rem;font-size:2rem}.practice-actions{justify-content:center;gap:1rem;width:100%;display:flex}.primary-btn,.secondary-btn{cursor:pointer;text-transform:uppercase;border-radius:0;padding:.75rem 1.5rem;font-family:Inter,sans-serif;font-size:.875rem;font-weight:500;transition:all .2s}.primary-btn{color:var(--text-primary);border:1px solid var(--text-primary);background:0 0}.primary-btn:hover{background:var(--text-primary);color:var(--bg-color)}.secondary-btn{background:var(--panel-bg);color:var(--text-secondary);border:1px solid var(--panel-border)}.secondary-btn:hover:not(:disabled){border-color:var(--text-primary);color:var(--text-primary)}.secondary-btn:disabled{opacity:.5;cursor:not-allowed}.challenge-display{text-align:center;padding:2rem}.challenge-text{font-size:1.5rem;font-weight:400}.highlight-text{color:var(--text-primary);border-bottom:1px solid var(--text-primary);font-weight:600}.empty-state{text-align:center;color:var(--text-secondary);padding:4rem;font-size:1.1rem}.toggle-group{flex-direction:column;justify-content:center;gap:.75rem;display:flex}.horizontal-toggle{flex-direction:row;align-items:center}.toggle-container{width:44px;height:24px;position:relative}.toggle-container input{opacity:0;width:0;height:0}.toggle-label{cursor:pointer;background-color:var(--panel-bg);border:1px solid var(--panel-border);border-radius:0;transition:all .3s;position:absolute;inset:0}.toggle-label:before{content:"";background-color:var(--text-secondary);border-radius:0;width:16px;height:16px;transition:left .3s,background-color .3s;position:absolute;bottom:3px;left:3px}input:checked+.toggle-label{border-color:var(--text-primary)}input:checked+.toggle-label:before{background-color:var(--text-primary);left:23px;transform:none}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes popIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.fade-in{animation:.3s forwards fadeIn}.reveal-animation{animation:.4s forwards fadeIn}.app-layout{display:flex}.app-main{flex:1;min-height:100vh;margin-left:240px}.sidenav{background-color:var(--sidenav-bg);border-right:1px solid var(--panel-border);z-index:50;flex-direction:column;align-items:flex-start;width:240px;height:100vh;padding:1.5rem 1rem;transition:background-color .3s;display:flex;position:fixed;top:0;left:0}.nav-profile{width:100%;margin-bottom:2rem}.nav-logo{align-items:center;gap:.75rem;display:flex}.nav-logo-circle{background-color:var(--panel-bg);border:1px solid var(--panel-border);width:40px;height:40px;color:var(--text-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-family:Playfair Display,serif;font-size:1.2rem;font-weight:700;display:flex}.nav-logo-text{color:var(--text-primary);white-space:nowrap;font-family:Playfair Display,serif;font-size:1.1rem;font-weight:700}.nav-links{flex-direction:column;flex:1;align-items:flex-start;gap:.5rem;width:100%;display:flex}.nav-item{width:100%;color:var(--text-secondary);cursor:pointer;text-align:left;background:0 0;border:none;justify-content:flex-start;align-items:center;gap:.75rem;padding:.75rem 1rem;font-family:Inter,sans-serif;font-size:.95rem;font-weight:500;text-decoration:none;transition:all .3s;display:flex}.nav-item:hover{color:var(--text-primary);background-color:var(--nav-hover-bg);border-radius:.25rem}.nav-item.active{color:var(--text-primary);background-color:var(--nav-active-bg);border-left:3px solid var(--text-primary);border-radius:.25rem}.mobile-only{display:none}.chord-highlight{border:2px solid var(--text-primary);border-radius:0}.root-note.chord-highlight{background-color:var(--note-root-bg);color:var(--bg-color)}.chord-legend-demo{border:2px solid var(--text-primary);border-radius:0;width:16px;height:16px;display:inline-block}.metronome-wrapper{z-index:100;flex-direction:column;align-items:flex-end;gap:1rem;display:flex;position:fixed;bottom:2rem;right:2rem}.metronome-toggle{background-color:var(--panel-bg);border:1px solid var(--panel-border);width:60px;height:60px;color:var(--text-primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;transition:all .3s;display:flex;box-shadow:0 4px 20px #00000080}.light-mode .metronome-toggle{box-shadow:0 4px 20px #0000001a}.metronome-toggle:hover{background-color:var(--nav-hover-bg);border-color:var(--text-primary)}.metronome-toggle.pulse{border-color:var(--text-secondary);animation:2s infinite borderPulse}@keyframes borderPulse{0%{box-shadow:0 0 #96969680}70%{box-shadow:0 0 0 15px #96969600}to{box-shadow:0 0 #96969600}}.metronome-panel{flex-direction:column;gap:1.5rem;width:320px;padding:1.5rem;display:flex}.metronome-header{justify-content:space-between;align-items:center;display:flex}.metronome-header h3{margin:0;font-size:1.25rem}.tick-indicator{background-color:var(--panel-border);border-radius:50%;width:12px;height:12px;transition:background-color .1s}.tick-indicator.active-accent{background-color:var(--text-primary);box-shadow:0 0 10px var(--text-primary)}.tick-indicator.active-beat{background-color:var(--text-secondary)}.tick-indicator.active-sub{background-color:var(--panel-border);border:1px solid var(--text-secondary)}.metronome-display{background-color:var(--bg-color);border:1px solid var(--panel-border);flex-direction:column;align-items:center;padding:1.5rem;display:flex}.bpm-text{font-family:Playfair Display,serif;font-size:3rem;font-weight:700;line-height:1}.bpm-label{color:var(--text-secondary);letter-spacing:.1em;text-transform:uppercase;font-size:.8rem}.metronome-controls-inner{flex-direction:column;gap:1.5rem;display:flex}.bpm-slider{width:100%;accent-color:var(--text-primary)}.tap-btn{width:100%;padding:.5rem}.settings-row{gap:1rem;display:flex}.settings-row .control-group{flex:1}.settings-row select{width:100%;padding:.5rem}.play-btn{justify-content:center;align-items:center;width:100%;padding:1rem;display:flex}.play-btn span{font-size:2rem}.play-btn.playing{background-color:var(--text-primary);color:var(--bg-color)}@media (width<=768px){.app-container{gap:1rem;padding:1rem}.app-header{text-align:center;flex-direction:column;gap:1rem;padding:1.5rem 1rem}.controls{box-sizing:border-box;flex-direction:column;align-items:stretch;gap:1.5rem;padding:1.5rem 1rem}.fretboard-wrapper{box-sizing:border-box;gap:1.5rem;padding:1.5rem 1rem}.shape-info{flex-direction:column;align-items:flex-start;gap:1rem}.sidenav{display:none}.app-main{width:100vw;max-width:100vw;margin-left:0}.practice-actions{flex-direction:column}.metronome-panel{z-index:1050;background-color:var(--bg-color);border:none;border-radius:0;justify-content:center;width:100vw;max-width:100vw;height:100vh;padding:2rem 1.5rem;position:fixed;inset:0}.mobile-only{display:block!important}}