:root{--bg-color: #0d0f14;--panel-bg: rgba(20, 22, 30, .7);--accent-cyan: #00f2ff;--accent-magenta: #ff00ff;--accent-gold: #ffcc00;--text-primary: #e0e0e0;--text-secondary: #90a0b0;--glass-border: rgba(255, 255, 255, .1);font-family:Inter,system-ui,-apple-system,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);height:100vh;height:100dvh;overflow:hidden;touch-action:pan-x pan-y;background-image:radial-gradient(circle at 20% 30%,rgba(0,242,255,.05) 0%,transparent 40%),radial-gradient(circle at 80% 70%,rgba(255,0,255,.05) 0%,transparent 40%)}#app{width:100%;max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}main{flex:1;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:2rem;padding:1rem 0 2rem;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none}main::-webkit-scrollbar{display:none}header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:16px;border:1px solid var(--glass-border)}.header-logo{display:flex;align-items:center;gap:1rem}.app-icon{width:48px;height:48px;border-radius:12px;object-fit:contain;box-shadow:0 4px 12px #0000004d;border:1px solid var(--glass-border)}h1{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(90deg,#fff,var(--accent-cyan));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.musical-settings{display:flex;flex-direction:column;gap:1.5rem;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:2rem;border-radius:20px;border:1px solid var(--glass-border)}.musical-settings h2{font-size:1.2rem;font-weight:800;color:#fff;text-transform:uppercase;letter-spacing:.2em;margin-bottom:.5rem}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}.control-section{display:flex;flex-direction:column;gap:1rem}.control-section h3{font-size:.8rem;font-weight:700;color:var(--accent-cyan);text-transform:uppercase;letter-spacing:.15em;opacity:.7;border-bottom:1px solid var(--glass-border);padding-bottom:.4rem}.control-grid{display:flex;flex-direction:column;gap:1rem}.control-group{display:flex;flex-direction:column;gap:.5rem}label{font-size:.65rem;text-transform:uppercase;letter-spacing:.12em;color:var(--text-secondary);font-weight:600}select,input[type=number]{background:#1a1d24;border:1px solid var(--glass-border);border-radius:8px;padding:.6rem;color:#fff;outline:none;transition:all .2s;cursor:pointer;width:100%}select:focus,input[type=number]:focus{border-color:var(--accent-cyan);box-shadow:0 0 10px #00f2ff33}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:30px;background:transparent;outline:none;margin:0;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{width:100%;height:6px;background:#ffffff1a;border-radius:10px;border:1px solid var(--glass-border)}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;height:20px;width:20px;border-radius:50%;background:var(--accent-cyan);cursor:pointer;margin-top:-8px;box-shadow:0 0 15px #00f2ff99;border:2px solid #fff;transition:all .2s cubic-bezier(.175,.885,.32,1.275)}input[type=range]:active::-webkit-slider-thumb{transform:scale(1.3);box-shadow:0 0 25px var(--accent-cyan)}input[type=range]::-moz-range-track{width:100%;height:6px;background:#ffffff1a;border-radius:10px}input[type=range]::-moz-range-thumb{height:20px;width:20px;border-radius:50%;background:var(--accent-cyan);cursor:pointer;border:2px solid #fff;box-shadow:0 0 15px #00f2ff99}.fretboard-container{background:var(--panel-bg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:20px;padding:3rem 1.5rem 2rem;border:1px solid var(--glass-border);overflow-x:auto;position:relative;scrollbar-width:thin;scrollbar-color:var(--accent-magenta) transparent}.fretboard-container::-webkit-scrollbar{height:6px}.fretboard-container::-webkit-scrollbar-track{background:transparent}.fretboard-container::-webkit-scrollbar-thumb{background:var(--accent-magenta);border-radius:10px;box-shadow:0 0 10px var(--accent-magenta)}.fretboard-svg{width:100%;height:auto;display:block}.fretboard-controls{display:flex;justify-content:flex-end;margin-top:.5rem;padding-right:1.5rem;margin-bottom:1rem}.zoom-pill{display:flex;align-items:center;gap:1rem;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:.5rem 1.5rem;border-radius:50px;border:1px solid var(--glass-border);box-shadow:0 4px 15px #0000004d}.zoom-icon{font-size:1rem;opacity:.7}.zoom-value{font-size:.75rem;font-weight:700;color:var(--accent-cyan);min-width:4ch;text-align:right}.zoom-pill input[type=range]{width:120px;height:20px}.zoom-pill input[type=range]::-webkit-slider-thumb{height:16px;width:16px;margin-top:-6px}.fret-label{fill:var(--text-secondary);font-size:12px;font-weight:600;text-anchor:middle}.fret-note.active circle{fill:#fff!important;r:16!important;filter:drop-shadow(0 0 15px white)!important}.fret-note.active text{fill:#000!important}.string-label{fill:var(--text-secondary);font-size:13px;font-weight:700;font-family:Inter,system-ui,sans-serif}.triad-color-0{--poly-rgb: 0, 242, 255}.triad-color-1{--poly-rgb: 255, 0, 255}.triad-color-2{--poly-rgb: 50, 205, 50}.triad-color-3{--poly-rgb: 255, 165, 0}.triad-color-4{--poly-rgb: 255, 204, 0}.triad-color-5{--poly-rgb: 30, 144, 255}.triad-shape-bg{fill:rgba(var(--poly-rgb),.05);stroke:rgba(var(--poly-rgb),.2);transition:all .3s cubic-bezier(.175,.885,.32,1.275)}.triad-shape-bg.active-shape{fill:rgba(var(--poly-rgb),.3)!important;stroke:rgba(var(--poly-rgb),.8)!important;stroke-width:25px;filter:drop-shadow(0 0 10px rgba(var(--poly-rgb),.5))}.fret-note.user-active circle{fill:var(--accent-cyan)!important;r:18!important;filter:drop-shadow(0 0 20px var(--accent-cyan))!important}header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:#14161ef2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:0 0 16px 16px;border:1px solid var(--glass-border);border-top:none;flex-shrink:0;z-index:100}.header-controls{display:flex;align-items:center;gap:1.5rem}.header-actions{display:flex;align-items:center;gap:1rem}.lang-selector{background:var(--panel-bg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--glass-border);border-radius:8px;padding:.5rem .75rem;color:#fff;font-size:.75rem;font-weight:700;outline:none;cursor:pointer;transition:all .2s;width:auto;-webkit-appearance:none;appearance:none}.lang-selector option{background:#1a1d24;color:#fff}.lang-selector:hover{border-color:var(--accent-cyan);background:#ffffff1a}.lang-selector:focus{border-color:var(--accent-cyan);box-shadow:0 0 10px #00f2ff33}.instrument-toggle{display:flex;background:#ffffff0d;padding:4px;border-radius:10px;border:1px solid var(--glass-border)}.toggle-btn{background:transparent;border:none;color:var(--text-secondary);padding:.5rem 1.25rem;border-radius:6px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;cursor:pointer;transition:all .2s}.toggle-btn.active{background:var(--accent-cyan);color:#000;box-shadow:0 0 15px #00f2ff4d}.toggle-btn:not(.active):hover{background:#ffffff1a;color:#fff}.btn{background:var(--accent-cyan);color:#000;border:none;border-radius:6px;padding:.5rem 1.25rem;font-weight:700;cursor:pointer;transition:all .3s;text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 20px #00f2ff66}.btn-primary{background:var(--accent-cyan);color:#000}.btn-secondary{background:#ffffff1a;color:#fff;min-width:180px}.btn-secondary:hover{background:#fff3;box-shadow:none;transform:translateY(-2px)}.metronome-visual{display:flex;gap:.5rem}.beat-dot{width:12px;height:12px;border-radius:50%;background:#ffffff1a;border:1px solid rgba(255,255,255,.05);transition:all .1s}.beat-dot.accent{border-color:#ffcc004d}.beat-dot.active{background:var(--accent-magenta);box-shadow:0 0 10px var(--accent-magenta)}.beat-dot.active.accent{background:var(--accent-gold);box-shadow:0 0 10px var(--accent-gold)}#metronome-page{display:flex;justify-content:center}.metro-container{width:100%;max-width:600px;display:flex;flex-direction:column;align-items:center;gap:1.25rem;padding:1.5rem 2rem;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:24px;border:1px solid var(--glass-border)}.metro-bpm-section{display:flex;align-items:center;gap:1rem}.metro-bpm-stack{display:flex;flex-direction:column;gap:.5rem}.metro-bpm-btn{width:56px;height:56px;border-radius:50%;border:2px solid var(--glass-border);background:#ffffff0d;color:#fff;font-size:1.8rem;font-weight:300;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;line-height:1;padding:0;flex-shrink:0}.metro-bpm-btn:hover{border-color:var(--accent-cyan);background:#00f2ff1a;box-shadow:0 0 15px #00f2ff33}.metro-bpm-btn:active{transform:scale(.92)}.metro-bpm-btn-sm{width:40px;height:40px;font-size:.7rem;font-weight:700;letter-spacing:-.02em}.metro-bpm-display{display:flex;flex-direction:column;align-items:center;gap:.25rem;min-width:140px}.metro-bpm-input{font-size:5rem;font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--accent-cyan)!important;background:transparent;border:none;outline:none;text-align:center;width:4ch;padding:0;-moz-appearance:textfield;appearance:textfield;caret-color:#fff}.metro-bpm-input::-webkit-outer-spin-button,.metro-bpm-input::-webkit-inner-spin-button{-webkit-appearance:none;appearance:none;margin:0}.metro-bpm-input:focus{color:#fff}.metro-bpm-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.3em;color:var(--text-secondary)}.metro-slider-wrap{width:100%;padding:0 1rem}.metro-beats{display:flex;gap:1.5rem;padding:1.5rem 0}.metro-beat-dot{width:36px;height:36px;border-radius:50%;background:#ffffff14;border:2px solid rgba(255,255,255,.1);transition:all .08s ease-out}.metro-beat-dot.accent{border-color:#ffcc004d}.metro-beat-dot.active{background:var(--accent-magenta);border-color:var(--accent-magenta);box-shadow:0 0 25px var(--accent-magenta),0 0 50px #ff00ff4d;transform:scale(1.3)}.metro-beat-dot.active.accent{background:var(--accent-gold);border-color:var(--accent-gold);box-shadow:0 0 25px var(--accent-gold),0 0 50px #ffcc004d}.metro-beat-dot.sub-active{background:#f0f6;border-color:#ff00ff80;box-shadow:0 0 12px #f0f3;transform:scale(1.1)}.metro-settings{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;width:100%}.metro-setting{display:flex;flex-direction:column;gap:.5rem}.metro-setting select,.metro-setting input[type=range]{width:100%}.metro-controls{display:flex;gap:1rem;width:100%}.metro-tap-btn{flex:1;background:#ffffff0f;color:var(--text-primary);border:1px solid var(--glass-border);font-size:.8rem;letter-spacing:.15em;transition:all .15s}.metro-tap-btn:hover{background:#ffffff1f;box-shadow:none;transform:translateY(-1px)}.metro-tap-btn:active{transform:scale(.97);background:#ffffff2e}.metro-start-btn{flex:1;font-size:1rem}.metro-start-btn.running{background:#ffffff1a;color:#fff}.metro-start-btn.running:hover{background:#fff3;box-shadow:none}.site-footer{text-align:center;padding:1.5rem;color:var(--text-secondary);font-size:.8rem;opacity:.6}a.toggle-btn{text-decoration:none;color:inherit}@media(max-width:768px){#app{padding:0 .75rem}main{gap:1rem;padding:.5rem 0 1rem}header{flex-direction:column;gap:.75rem;padding:.75rem;border-radius:0 0 12px 12px}h1{font-size:1.1rem;text-align:center}.header-controls{width:100%;flex-direction:column-reverse;gap:.75rem;align-items:center}.instrument-toggle{width:100%;justify-content:center}.toggle-btn{padding:.5rem 1rem;font-size:.7rem;flex:1;text-align:center}.metronome-visual{gap:.35rem}.beat-dot{width:10px;height:10px}.btn-primary,.btn-secondary{min-width:140px;padding:.6rem 1.5rem;font-size:.75rem}.fretboard-container{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:12px}#fretboard-svg-mount svg{min-width:600px}.musical-settings{padding:1.25rem;border-radius:14px;gap:1rem}.musical-settings h2{font-size:1rem;margin-bottom:.25rem}.settings-grid{grid-template-columns:1fr;gap:1.25rem}.control-grid{grid-template-columns:1fr}.metro-container{padding:1.25rem 1rem;gap:1rem;border-radius:16px}.metro-bpm-section{gap:.5rem;flex-wrap:wrap;justify-content:center}.metro-bpm-btn{width:44px;height:44px;font-size:1.4rem}.metro-bpm-btn-sm{width:34px;height:34px;font-size:.6rem}.metro-bpm-input{font-size:3.5rem;width:3.5ch}.metro-bpm-display{min-width:100px}.metro-beats{gap:1rem;padding:1rem 0}.metro-beat-dot{width:28px;height:28px}.metro-settings{grid-template-columns:1fr 1fr;gap:.75rem}.metro-controls{flex-direction:column;gap:.75rem}.metro-tap-btn,.metro-start-btn{width:100%}.site-footer{padding:1rem;font-size:.7rem}}@media(min-width:769px)and (max-width:1024px){#app{padding:0 1.25rem}header{padding:1rem 1.5rem}h1{font-size:1.2rem}.header-controls{gap:1rem}.settings-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}.metro-bpm-input{font-size:4rem}}@media(max-height:500px)and (orientation:landscape){header{flex-direction:row;padding:.5rem 1rem}h1{font-size:1rem}.header-controls{flex-direction:row;gap:.75rem}.metro-container{padding:1rem;gap:.75rem}.metro-bpm-input{font-size:3rem}.metro-beats{padding:.5rem 0}.metro-beat-dot{width:24px;height:24px}}