@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap";:root{--font-primary:"Outfit", sans-serif;--bg-canvas:#15181f;--bg-panel:#232731bf;--bg-sidebar:#1c1f27e6;--border-trim:#2e3440b3;--color-text-primary:#eceff4;--color-text-muted:#d8dee9;--color-text-dim:#8e96a5;--color-accent:#a59390;--color-accent-light:#c2b1af;--color-accent-dark:#82726f;--color-accent-opaque:#a5939026;--color-note-c:#e63946;--color-note-d:#f4a261;--color-note-e:#e9c46a;--color-note-f:#2a9d8f;--color-note-g:#4ea8de;--color-note-a:#9d4edd;--color-note-b:#ff85a1;--scale-pos-1-color:#e63946;--scale-pos-2-color:#e8c53a;--scale-pos-3-color:#2a9d8f;--scale-pos-4-color:#9d4edd;--scale-pos-5-color:#f4a261;--scale-pos-1-bg:#e6394614;--scale-pos-2-bg:#e8c53a14;--scale-pos-3-bg:#2a9d8f14;--scale-pos-4-bg:#9d4edd14;--scale-pos-5-bg:#f4a26114;--color-success:#a3be8c;--color-success-bg:#a3be8c26;--color-error:#bf616a;--color-error-bg:#bf616a26;--color-warning:#d08770;--glass-border:1px solid #ffffff0d;--glass-shadow:0 8px 32px 0 #0000005e;--glass-blur:blur(14px);--fret-open-col-width:60px;--fret-track-list:var(--fret-open-col-width) 1.25fr 1.18fr 1.11fr 1.05fr .99fr .93fr .88fr .83fr .78fr .74fr .7fr .66fr .62fr .59fr .55fr;--fret-row-height:46px;--neck-min-width:1000px;--neck-border-width:3px;--fret-wire-width:2px;--fret-nut-width:6px;--fret-marker-size:10px;--z-neck-svg:-1;--z-neck-inlay:5;--z-neck-wire:10;--z-neck-nut:15;--z-neck-string:20;--z-neck-selection:25;--z-neck-ring:30;--z-neck-note:31}*{box-sizing:border-box;font-family:var(--font-primary);-webkit-user-select:none;user-select:none;margin:0;padding:0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-canvas)}::-webkit-scrollbar-thumb{background:var(--border-trim);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-accent)}body{background-color:var(--bg-canvas);color:var(--color-text-primary);min-height:100vh;overflow-x:hidden}.app-viewport{flex-direction:column;gap:24px;width:100%;max-width:1400px;margin:0 auto;padding:24px 32px;display:flex}.app-viewport>.glass-panel{flex-shrink:0}.stat-pill{background:var(--bg-canvas);border:1px solid var(--border-trim);border-radius:12px;align-items:center;gap:8px;padding:8px 16px;font-size:14px;font-weight:600;display:flex}.stat-pill svg{width:16px;height:16px;fill:var(--color-accent)}.stat-pill.is-clearable{cursor:pointer;color:var(--color-accent-light);border-color:var(--color-accent);transition:background-color .15s,border-color .15s}.stat-pill.is-clearable:hover{background:var(--color-accent-opaque)}.glass-panel{background:var(--bg-panel);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px;padding:24px}.fretboard-container{flex-direction:column;gap:12px;display:flex}.fretboard-header{justify-content:space-between;align-items:center;display:flex}.fretboard-status-group{align-items:center;gap:12px;display:flex}.fretboard-title-group{align-items:center;display:flex}.fretboard-wrapper{border-radius:12px;width:100%;padding:12px 0;overflow-x:auto}.guitar-neck{grid-template-rows:repeat(6, var(--fret-row-height));grid-template-columns:var(--fret-track-list);border:var(--neck-border-width) solid #0f0c0c;isolation:isolate;min-width:var(--neck-min-width);background:radial-gradient(circle,#2e2624 0%,#1e1918 100%);border-radius:8px;display:grid;position:relative;box-shadow:inset 0 0 15px #000000e6}.guitar-neck:before{content:"";width:var(--fret-nut-width);pointer-events:none;z-index:var(--z-neck-nut);background:#c3b091;grid-area:1/2/-1/3;position:absolute;top:0;bottom:0;left:0;box-shadow:2px 0 5px #00000080}.marker-dot{width:var(--fret-marker-size);height:var(--fret-marker-size);pointer-events:none;z-index:var(--z-neck-inlay);background-color:#fff6;border-radius:50%;position:absolute;bottom:0;left:50%;transform:translate(-50%,50%)}.fret-cell{cursor:pointer;-webkit-touch-callout:none;-webkit-user-select:none;justify-content:center;align-items:center;transition:background-color .15s;display:flex;position:relative}.fret-cell.open-string-cell{background-color:#00000040}.fret-wire{width:var(--fret-wire-width);pointer-events:none;z-index:var(--z-neck-wire);background:linear-gradient(#cfd2d4 0%,#fff 30%,#6e7275 100%);position:absolute;top:0;bottom:0;right:0;transform:translate(50%);box-shadow:1px 0 2px #0009}.neck-string{height:var(--string-thickness,2px);pointer-events:none;z-index:var(--z-neck-string);background:linear-gradient(#dcdcdc 0%,#a9a9a9 50%,#696969 100%);position:absolute;top:50%;left:0;right:0;transform:translateY(-50%);box-shadow:0 1px 2px #0009}.fret-cell:hover{background-color:#ffffff0a}.fret-numbers-row{grid-template-columns:var(--fret-track-list);padding:8px var(--neck-border-width);min-width:var(--neck-min-width);display:grid}.fret-number-label{text-align:center;color:var(--color-text-dim);font-size:13px;font-weight:600}.note-ring{z-index:var(--z-neck-ring);border-radius:50%;justify-content:center;align-items:center;padding:4px;display:inline-flex;position:relative}.note-node{color:#fff;text-shadow:0 1px 2px #000000e6;width:28px;height:28px;z-index:var(--z-neck-note);pointer-events:none;border-radius:50%;justify-content:center;align-items:center;font-size:12px;font-weight:700;transition:transform .15s cubic-bezier(.175,.885,.32,1.275),box-shadow .15s;display:flex;position:relative;transform:scale(1);box-shadow:0 4px 10px #0009,inset 0 1px 1px #fff6}.note-node.root-note{border:2px solid #fff;box-shadow:0 4px 12px #000000b3,inset 0 1px 1px #fff6}.note-node.root-note:before{content:"👑";font-size:11px;position:absolute;top:-13px}.note-node.pulse{transform:scale(1.18);box-shadow:0 0 15px}[data-mode=notes] .note-node.accidental-note{width:22px;height:22px;font-size:10px}.note-c{background-color:var(--color-note-c)}.note-d{background-color:var(--color-note-d)}.note-e{background-color:var(--color-note-e)}.note-f{background-color:var(--color-note-f)}.note-g{background-color:var(--color-note-g)}.note-a{background-color:var(--color-note-a)}.note-b{background-color:var(--color-note-b)}.fret-cell.pin-anchor:before{content:"";border:2.5px solid var(--color-accent-light);width:30px;height:30px;box-shadow:0 0 10px var(--color-accent);z-index:var(--z-neck-selection);background-color:#ffffff26;border-radius:50%;animation:.2s cubic-bezier(.175,.885,.32,1.275) forwards popIn;position:absolute}.fret-cell.is-charging:before{content:"";border:2.5px solid var(--color-accent-light);width:30px;height:30px;box-shadow:none;z-index:var(--z-neck-selection);animation:pressCharge var(--press-duration,.5s) linear forwards;background-color:#0000;border-radius:50%;position:absolute}@keyframes popIn{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}@keyframes pressCharge{0%{opacity:0;transform:scale(.55)}to{opacity:1;transform:scale(1)}}#controls-panel{flex-wrap:wrap;align-items:flex-end;gap:16px;display:flex}#explore-controls,#quiz-controls{flex:1;min-width:0}.controls-layout{flex-wrap:wrap;gap:16px;display:flex}.control-group{flex-direction:column;flex-grow:1;gap:6px;min-width:150px;display:flex}.control-group label{color:var(--color-text-dim);font-size:13px;font-weight:500}.styled-select{background:var(--bg-canvas);border:1px solid var(--border-trim);color:var(--color-text-primary);cursor:pointer;border-radius:12px;outline:none;padding:12px 16px;font-size:15px;font-weight:500;transition:border-color .2s}.styled-select:focus{border-color:var(--color-accent)}.styled-select:disabled{opacity:.35;pointer-events:none;cursor:not-allowed;background-color:#00000026}.info-icon-container{color:var(--color-text-dim);cursor:help;vertical-align:middle;justify-content:center;align-items:center;margin-left:6px;display:inline-flex;position:relative}.info-icon-container:hover{color:var(--color-text-primary)}.info-tooltip{visibility:hidden;opacity:0;background:var(--bg-canvas);border:1px solid var(--border-trim);-webkit-backdrop-filter:blur(12px);width:220px;color:var(--color-text-primary);text-align:center;z-index:100;pointer-events:none;border-radius:8px;padding:10px 12px;font-size:12px;line-height:1.4;transition:opacity .2s,visibility .2s;position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);box-shadow:0 4px 15px #0006}.info-icon-container:hover .info-tooltip{visibility:visible;opacity:1}.switch-container{width:50px;height:28px;display:inline-block;position:relative}.switch-container input{opacity:0;width:0;height:0}.switch-slider{cursor:pointer;background-color:var(--bg-canvas);border:1px solid var(--border-trim);border-radius:34px;transition:all .25s;position:absolute;inset:0}.switch-slider:before{content:"";background-color:var(--color-text-dim);border-radius:50%;width:18px;height:18px;transition:all .25s;position:absolute;bottom:4px;left:4px}.switch-container input:checked+.switch-slider{background-color:var(--color-accent-opaque);border-color:var(--color-accent)}.switch-container input:checked+.switch-slider:before{background-color:var(--color-accent);transform:translate(22px)}.neck-svg-overlay{pointer-events:none;width:100%;height:100%;z-index:var(--z-neck-svg);position:absolute;top:0;left:0}.scale-box-path,.chord-box-path{fill-opacity:0;stroke-opacity:0;stroke-width:1.5px;stroke-linejoin:round;transition:fill-opacity .3s,stroke-opacity .3s}.scale-box-path.visible,.chord-box-path.visible{fill-opacity:.18;stroke-opacity:.7}.scale-box-path.visible.hovered,.chord-box-path.visible.hovered{fill-opacity:.35;stroke-opacity:1}#neck-tooltip{pointer-events:none;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#eceff4;z-index:1000;opacity:0;background:#232731f2;border:1px solid #ffffff26;border-radius:6px;padding:6px 12px;font-size:12px;font-weight:600;transition:opacity .2s;position:absolute;box-shadow:0 4px 16px #00000080}.note-node.dimmed{filter:grayscale(40%);transition:opacity .3s,filter .3s,transform .3s;transform:scale(.9);opacity:.25!important}.note-node.pc-match{outline-offset:2px;outline:2px solid #ffffffeb;transform:scale(1.12)}.guitar-neck.has-pin .note-node:not(.pc-match){filter:grayscale(70%);opacity:.12!important}.btn-primary{background:var(--color-accent);color:#15181f;cursor:pointer;border:none;border-radius:12px;align-items:center;gap:8px;padding:14px 28px;font-size:15px;font-weight:600;transition:all .2s;display:inline-flex;box-shadow:0 4px 14px #a5939033}.btn-primary:hover{background:var(--color-accent-light);transform:translateY(-1px);box-shadow:0 6px 20px #a5939059}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--color-text-primary);border:1px solid var(--border-trim);cursor:pointer;background:0 0;border-radius:12px;padding:14px 28px;font-size:15px;font-weight:600;transition:all .2s}.btn-secondary:hover{border-color:var(--color-text-muted);background:#ffffff08}.fret-range-row{flex-grow:1}.fret-range-sliders{flex-wrap:wrap;align-items:center;gap:12px;margin-top:8px;display:flex}.fret-range-sliders span{color:var(--color-text-dim);font-size:14px;font-weight:600}.fret-range-sliders input[type=range]{flex:1;min-width:100px}.quiz-prompt-text{letter-spacing:.2px;font-size:18px;font-weight:600}.streak-badge{color:#e63946;background:#e6394626;border:1px solid #e63946;border-radius:20px;padding:4px 12px;font-size:12px;font-weight:700}.quiz-answer-panel{justify-content:center;align-items:center;padding:24px;display:flex;overflow-x:auto}.quiz-answer-strip{flex-wrap:wrap;justify-content:center;gap:12px;width:100%;display:flex}.answer-node{color:#fff;cursor:pointer;-webkit-user-select:none;user-select:none;border:2px solid #0000;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:16px;font-weight:700;transition:transform .15s,box-shadow .15s,background-color .2s,border-color .2s;display:flex;box-shadow:0 4px 10px #0000004d}.answer-node:hover{transform:scale(1.1)}.answer-node.disabled{pointer-events:none;opacity:.6}.answer-node.accidental{width:38px;height:38px;margin:5px 0;font-size:13px}.answer-node.note-C{background-color:#e63946}.answer-node.note-D{background-color:#f4a261}.answer-node.note-E{background-color:#e9c46a}.answer-node.note-F{background-color:#2a9d8f}.answer-node.note-G{background-color:#4ea8de}.answer-node.note-A{background-color:#9d4edd}.answer-node.note-B{background-color:#ff85a1}.answer-node.correct-flash{animation:.5s ease-out correctScale;background-color:var(--color-success)!important;border-color:#a3be8c!important;box-shadow:0 0 20px #a3be8ccc!important}.answer-node.wrong-flash{animation:.5s ease-in-out shakeNode;background-color:var(--color-error)!important;border-color:#bf616a!important;box-shadow:0 0 20px #bf616acc!important}.answer-node.reveal{animation:.8s infinite alternate pulseReveal;border-color:#fff!important;box-shadow:0 0 15px #fffc!important}@keyframes correctScale{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1)}}@keyframes shakeNode{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}@keyframes pulseReveal{0%{transform:scale(1);box-shadow:0 0 5px #ffffff80}to{transform:scale(1.1);box-shadow:0 0 20px #ffffffe6}}.quiz-target-node{animation:1.2s infinite alternate pulseTarget;border:2px solid #fff!important}@keyframes pulseTarget{0%{transform:scale(1);box-shadow:0 0 4px #fff6}to{transform:scale(1.15);box-shadow:0 0 16px #ffffffe6}}.control-actions{align-items:flex-end;gap:16px;margin-left:auto;display:flex}#quiz-controls,#quiz-prompt-text,#quiz-answer-panel,#btn-quiz-begin,#btn-quiz-back,#btn-quiz-stop,body.is-quiz-mode #explore-controls,body.is-quiz-mode #fretboard-title,body.is-quiz-mode #pin-hint-icon,body.is-quiz-mode #notes-found-badge,body.is-quiz-mode #btn-quiz-start{display:none}body.is-quiz-mode:not(.is-quiz-active) #quiz-controls{display:flex}body.is-quiz-mode:not(.is-quiz-active) #btn-quiz-begin,body.is-quiz-mode:not(.is-quiz-active) #btn-quiz-back{display:inline-block}body.is-quiz-active #quiz-prompt-text{display:block}body.is-quiz-active #quiz-answer-panel{display:flex}body.is-quiz-active #btn-quiz-stop{display:inline-block}[hidden]{display:none!important}.beta-badge{background:var(--color-accent);color:#15181f;vertical-align:middle;letter-spacing:.5px;border-radius:4px;margin-left:8px;padding:2px 6px;font-size:10px;font-weight:800;line-height:1.2;display:inline-block}.toast-notification{z-index:500;border-radius:12px;align-items:center;gap:12px;padding:16px 24px;font-weight:600;animation:.3s cubic-bezier(.175,.885,.32,1.275) forwards slideInUp;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 10px 30px #00000080}.toast-success{background-color:var(--color-success-bg);border:1px solid var(--color-success);color:var(--color-success)}.toast-error{background-color:var(--color-error-bg);border:1px solid var(--color-error);color:var(--color-error)}@keyframes slideInUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@media (width<=768px){.app-viewport{padding:16px}.controls-layout{gap:12px}.control-actions{width:100%;margin-left:0}}