/*! Vocal Range Test 1.0.0 | source: src/vrt.css */.vrt{--vrt-brand:#3b82f6;--vrt-brand-dark:#2563eb;--vrt-accent:#ec4899;--vrt-bg:#ffffff;--vrt-bg-alt:#f8fafc;--vrt-text:#0f172a;--vrt-text-muted:#64748b;--vrt-border:#e2e8f0;--vrt-success:#10b981;--vrt-error:#ef4444;--vrt-shadow:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -2px rgba(0,0,0,0.025);--vrt-radius:16px;--vrt-link:#1d4ed8;box-sizing:border-box;max-width:900px;margin:40px auto;font-family:system-ui,-apple-system,sans-serif;line-height:1.65;background-color:var(--vrt-bg);border:1px solid var(--vrt-border);border-radius:var(--vrt-radius);box-shadow:var(--vrt-shadow);overflow:hidden;color:var(--vrt-text);text-align:start}@media (prefers-color-scheme:dark){.vrt{--vrt-bg:#0f172a;--vrt-bg-alt:#1e293b;--vrt-text:#f8fafc;--vrt-text-muted:#94a3b8;--vrt-border:#334155;--vrt-link:#93c5fd}}.vrt *,.vrt *::before,.vrt *::after{box-sizing:border-box}.vrt [hidden]{display:none !important}.vrt .vrt-app-header{background:linear-gradient(135deg,var(--vrt-brand),var(--vrt-accent));padding:32px 20px;text-align:center;color:#ffffff}.vrt .vrt-app-title{margin:50px 0 25px 0;padding:0;font-family:inherit;font-size:1.75rem;font-weight:800;line-height:1.3em;color:#ffffff;letter-spacing:normal;text-transform:none;clear:none}.vrt .vrt-app-subtitle{margin:0 0 1.6em 0;padding:0;font-size:1.05rem;line-height:inherit;opacity:0.9;color:inherit}.vrt .vrt-app-body{background:var(--vrt-bg-alt);min-height:500px;display:flex;flex-direction:column;position:relative}.vrt .vrt-stepper{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;margin:0;list-style:none;background:var(--vrt-bg);border-bottom:1px solid var(--vrt-border)}.vrt .vrt-stepper>li{margin:0;padding:0;list-style:none}.vrt .vrt-step{display:flex;align-items:center;gap:8px;font-weight:600;font-size:0.9rem;color:var(--vrt-text-muted)}.vrt .vrt-step-num{width:28px;height:28px;border-radius:50%;background:var(--vrt-border);display:flex;align-items:center;justify-content:center;font-size:0.8rem;flex:none}.vrt .vrt-step.vrt-on{color:var(--vrt-brand)}.vrt .vrt-step.vrt-on .vrt-step-num{background:var(--vrt-brand);color:#fff}.vrt .vrt-step.vrt-done{color:var(--vrt-success)}.vrt .vrt-step.vrt-done .vrt-step-num{background:var(--vrt-success);color:#fff}.vrt .vrt-stepper>.vrt-step-line{display:block;flex-grow:1;height:2px;background:var(--vrt-border);margin:0 16px}.vrt.vrt-mode-low [data-vrt-step="2"],.vrt.vrt-mode-low .vrt-line-2{display:none}.vrt .vrt-view{display:none;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;flex-grow:1;text-align:center;animation:vrtFadeIn 0.3s ease forwards}.vrt .vrt-view.vrt-active{display:flex}@keyframes vrtFadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.vrt .vrt-h3{font-size:1.5rem;font-weight:700;line-height:1.3em;margin:30px 0 20px 0;color:var(--vrt-text);outline:none}.vrt .vrt-h3-report{margin-bottom:24px}.vrt .vrt-desc{font-size:1rem;color:var(--vrt-text-muted);max-width:460px;margin:0 0 1.6em 0;padding:0;line-height:1.6}.vrt .vrt-hero-icon{font-size:64px;margin-bottom:24px;line-height:1}.vrt .vrt-btn-group{display:flex;flex-direction:column;gap:16px;width:100%;max-width:300px;align-items:center;margin-bottom:24px}.vrt .vrt-actions-row{display:flex;flex-wrap:wrap;gap:16px;width:100%;justify-content:center;margin-top:16px}.vrt .vrt-btn{appearance:none;-webkit-appearance:none;border:none;border-radius:99px;padding:14px 32px;margin:0;font-size:1.05rem;font-weight:600;line-height:1;letter-spacing:normal;text-transform:none;text-decoration:none;cursor:pointer;transition:all 0.2s ease;width:100%;font-family:inherit;display:inline-flex;align-items:center;justify-content:center;text-align:center}.vrt .vrt-btn:focus{outline:none}.vrt .vrt-btn:focus-visible{outline:3px solid var(--vrt-brand);outline-offset:2px}.vrt .vrt-btn-primary{background:var(--vrt-brand);color:#ffffff;box-shadow:0 4px 6px rgba(59,130,246,0.2)}.vrt .vrt-btn-primary:hover:not(:disabled),.vrt .vrt-btn-primary:focus:not(:disabled){background:var(--vrt-brand-dark);color:#ffffff}.vrt .vrt-btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 12px rgba(59,130,246,0.3)}.vrt .vrt-btn-primary:disabled{background:var(--vrt-text-muted);color:#ffffff;opacity:0.5;cursor:not-allowed;box-shadow:none;transform:none}.vrt .vrt-btn-secondary{background:transparent;border:2px solid var(--vrt-border);color:var(--vrt-text)}.vrt .vrt-btn-secondary:hover,.vrt .vrt-btn-secondary:focus{background:var(--vrt-border);color:var(--vrt-text);border-color:var(--vrt-border)}.vrt .vrt-features-badges{margin-top:16px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}.vrt .vrt-badge-mini{font-size:0.8rem;font-weight:600;color:var(--vrt-text-muted);background:var(--vrt-bg);border:1px solid var(--vrt-border);padding:6px 12px;border-radius:20px}.vrt .vrt-spinner{width:48px;height:48px;border:4px solid var(--vrt-border);border-top-color:var(--vrt-brand);border-radius:50%;animation:vrtSpin 1s linear infinite;margin-bottom:24px}@keyframes vrtSpin{to{transform:rotate(360deg)}}.vrt .vrt-signal-bar{width:100%;display:flex;justify-content:flex-end;margin-bottom:16px;margin-top:-24px}.vrt .vrt-signal-status{display:inline-flex;align-items:center;gap:8px;font-size:0.8rem;font-weight:600;background:var(--vrt-bg);border:1px solid var(--vrt-border);padding:6px 16px;border-radius:20px;color:var(--vrt-text-muted)}.vrt .vrt-signal-dot{width:8px;height:8px;border-radius:50%;background:var(--vrt-text-muted);transition:background 0.3s}.vrt .vrt-signal-status.vrt-good .vrt-signal-dot{background:var(--vrt-success);box-shadow:0 0 6px var(--vrt-success)}.vrt .vrt-signal-status.vrt-weak .vrt-signal-dot{background:var(--vrt-error)}.vrt .vrt-target-pill{font-size:0.95rem;font-weight:700;color:var(--vrt-brand);background:var(--vrt-bg);border:1px solid var(--vrt-border);padding:8px 20px;border-radius:99px;margin-bottom:16px;outline:none}.vrt .vrt-instruction{font-size:1rem;color:var(--vrt-text-muted);max-width:360px;margin:0 0 32px 0;padding:0;min-height:48px;line-height:1.5}.vrt p.vrt-instruction{margin:0 0 1.6em 0}.vrt .vrt-instruction strong{font-weight:700;color:inherit}.vrt .vrt-dial-wrapper{position:relative;width:220px;height:220px;margin-bottom:24px;display:flex;align-items:center;justify-content:center}.vrt .vrt-dial-svg{position:absolute;top:0;left:0;width:100%;height:100%;transform:rotate(-90deg);overflow:hidden}.vrt .vrt-dial-bg{fill:none;stroke:var(--vrt-border);stroke-width:6}.vrt .vrt-dial-bar{fill:none;stroke:var(--vrt-brand);stroke-width:8;stroke-dasharray:565.48;stroke-dashoffset:565.48;transition:stroke-dashoffset 0.1s linear,stroke 0.3s ease;stroke-linecap:round}.vrt .vrt-dial-readout{z-index:2;text-align:center;transition:opacity 0.2s}.vrt .vrt-live-note{font-size:4.5rem;font-weight:800;line-height:1;color:var(--vrt-text);margin-bottom:4px}.vrt .vrt-live-hz{font-size:1.1rem;color:var(--vrt-text-muted);font-family:ui-monospace,monospace;font-weight:600}.vrt .vrt-dial-success{position:absolute;top:0;left:0;width:100%;height:100%;background:var(--vrt-bg);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;opacity:0;pointer-events:none;transform:scale(0.8);transition:all 0.3s cubic-bezier(0.34,1.56,0.64,1);z-index:3;border:4px solid var(--vrt-success);color:var(--vrt-success);font-weight:800;font-size:1.25rem}.vrt .vrt-dial-success.vrt-active{opacity:1;transform:scale(1);pointer-events:all}.vrt .vrt-success-icon{font-size:3rem;margin-bottom:4px}.vrt .vrt-lock-row{display:flex;justify-content:center;margin-bottom:24px;width:100%}.vrt .vrt-btn-lock{max-width:280px;box-shadow:0 4px 15px rgba(59,130,246,0.3)}.vrt .vrt-waveform{display:inline-block;width:100%;max-width:280px;height:50px;border-radius:8px;background:rgba(0,0,0,0.03);border:1px solid var(--vrt-border);margin-bottom:12px}.vrt .vrt-helper-text{font-size:0.85rem;color:var(--vrt-text-muted);font-weight:500;margin:0 0 1.6em 0;padding:0}.vrt .vrt-link-btn{appearance:none;-webkit-appearance:none;background:none;border:0;border-radius:4px;box-shadow:none;padding:4px 8px;margin:0;font:inherit;font-size:0.85rem;font-weight:600;line-height:1.4;color:var(--vrt-text-muted);text-decoration:underline;text-underline-offset:3px;cursor:pointer}.vrt .vrt-link-btn:hover,.vrt .vrt-link-btn:focus{background:none;color:var(--vrt-text)}.vrt .vrt-link-btn:focus-visible{outline:3px solid var(--vrt-brand);outline-offset:2px}.vrt .vrt-piano-container{width:100%;max-width:800px;position:relative;margin-bottom:8px}.vrt .vrt-piano-scroll{width:100%;overflow-x:auto;padding-bottom:16px;scrollbar-width:thin;scrollbar-color:var(--vrt-text-muted) var(--vrt-border)}.vrt .vrt-piano-scroll::-webkit-scrollbar{height:6px}.vrt .vrt-piano-scroll::-webkit-scrollbar-thumb{background:var(--vrt-text-muted);border-radius:3px}.vrt .vrt-piano-fade{position:absolute;top:0;bottom:16px;width:32px;pointer-events:none;z-index:5}.vrt .vrt-fade-l{left:0;background:linear-gradient(to right,var(--vrt-bg-alt),transparent)}.vrt .vrt-fade-r{right:0;background:linear-gradient(to left,var(--vrt-bg-alt),transparent)}.vrt .vrt-piano{display:flex;height:120px;width:max-content;border:1px solid #1e293b;border-radius:6px;box-shadow:0 4px 6px rgba(0,0,0,0.1);background:#1e293b}.vrt .vrt-kw{position:relative;display:flex;width:36px;height:100%;flex:none;z-index:1}.vrt .vrt-key-w{appearance:none;-webkit-appearance:none;margin:0;box-shadow:none;line-height:inherit;text-transform:none;letter-spacing:normal;font-family:inherit;width:36px;height:100%;background:#ffffff;border:0;border-right:1px solid #cbd5e1;border-radius:0 0 4px 4px;position:relative;display:flex;align-items:flex-end;justify-content:center;padding:0 0 8px 0;font-size:0.7rem;color:#64748b;font-weight:700;cursor:pointer;transition:background 0.1s,transform 0.1s}.vrt .vrt-kw:last-child .vrt-key-w{border-right:none}.vrt .vrt-key-w:hover,.vrt .vrt-key-w:focus{background:#f8fafc;color:#64748b}.vrt .vrt-key-w:active{transform:scaleY(0.98);transform-origin:top;background:#e2e8f0}.vrt .vrt-key-b{appearance:none;-webkit-appearance:none;margin:0;padding:0;border:0;box-shadow:none;font-size:0.7rem;font-weight:700;line-height:inherit;color:#64748b;width:24px;height:62%;background:#1e293b;position:absolute;top:0;right:-12px;z-index:2;border-radius:0 0 4px 4px;cursor:pointer;transition:background 0.1s,transform 0.1s}.vrt .vrt-key-b:hover,.vrt .vrt-key-b:focus{background:#334155}.vrt .vrt-key-b:active{transform:scaleY(0.98);transform-origin:top;background:#0f172a}.vrt .vrt-key-w:focus-visible,.vrt .vrt-key-b:focus-visible{outline:3px solid var(--vrt-brand);outline-offset:-3px;z-index:4}.vrt .vrt-key-w.vrt-in-range{background:#dbeafe;color:#1e40af}.vrt .vrt-key-b.vrt-in-range{background:#1e3a8a}.vrt .vrt-key-w.vrt-extreme,.vrt .vrt-key-b.vrt-extreme{background:var(--vrt-accent);color:#ffffff}.vrt .vrt-piano-hint{font-size:0.85rem;margin-top:0;margin-bottom:1.6em}.vrt .vrt-metrics-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;width:100%;margin-bottom:32px}.vrt .vrt-metric-card{background:var(--vrt-bg);border:1px solid var(--vrt-border);border-radius:12px;padding:20px 16px;text-align:center;box-shadow:0 2px 4px rgba(0,0,0,0.02)}.vrt .vrt-highlight-card{background:linear-gradient(to right,rgba(59,130,246,0.05),rgba(236,72,153,0.05));border-color:rgba(59,130,246,0.2)}.vrt .vrt-metric-span2{grid-column:1 / -1}.vrt .vrt-metric-label{display:block;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--vrt-text-muted);font-weight:700;margin-bottom:8px}.vrt .vrt-metric-value{display:block;font-size:1.5rem;font-weight:800;color:var(--vrt-text)}.vrt .vrt-highlight-card .vrt-metric-value{font-size:1.75rem;color:var(--vrt-brand)}.vrt .vrt-metric-sub{display:block;font-size:0.85rem;color:var(--vrt-text-muted);margin-top:4px;font-family:ui-monospace,monospace}.vrt .vrt-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.vrt .vrt-intro-msg{margin:16px 0 0 0;padding:0;font-size:0.9rem;font-weight:600;color:var(--vrt-text-muted)}.vrt .vrt-ways{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;width:100%;max-width:420px;margin:-8px 0 8px 0}.vrt .vrt-btn-small{width:auto;flex:1 1 170px;padding:10px 18px;font-size:0.9rem}.vrt .vrt-lowsofar{margin:-12px 0 16px 0;padding:0;font-size:0.95rem;font-weight:700;color:var(--vrt-link)}.vrt .vrt-finish-row{margin-top:-8px}.vrt .vrt-btn-finish{max-width:280px}.vrt .vrt-type-grid{display:grid;grid-template-columns:1fr;gap:16px;width:100%;max-width:460px;margin-bottom:8px;text-align:left}.vrt .vrt-field-label{display:block;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--vrt-text-muted);font-weight:700;margin-bottom:8px}.vrt .vrt-field-row{display:flex;gap:10px;align-items:stretch}.vrt .vrt-select{flex:1 1 auto;min-width:0;width:auto;height:auto;min-height:46px;margin:0;font-family:inherit;font-size:1rem;line-height:1.4;color:var(--vrt-text);background-color:var(--vrt-bg);border:1px solid var(--vrt-border);border-radius:12px;padding:10px 12px;box-shadow:none}.vrt .vrt-select:focus{outline:3px solid var(--vrt-brand);outline-offset:1px;border-color:var(--vrt-brand)}.vrt .vrt-btn-play{width:auto;flex:none;padding:10px 18px;font-size:0.95rem}.vrt .vrt-form-msg{min-height:1.5em;margin:0 0 16px 0;padding:0;font-size:0.95rem;font-weight:600;color:var(--vrt-error)}.vrt .vrt-more{display:flex;flex-direction:column;gap:16px;width:100%;margin:-8px 0 16px 0;text-align:left}.vrt .vrt-lowline{margin:0;padding:16px;font-size:0.95rem;line-height:1.55;color:var(--vrt-text);background:var(--vrt-bg);border:1px solid rgba(59,130,246,0.2);border-radius:12px}.vrt .vrt-card{background:var(--vrt-bg);border:1px solid var(--vrt-border);border-radius:12px;padding:16px;box-shadow:0 2px 4px rgba(0,0,0,0.02)}.vrt .vrt-card-title{font-size:0.75rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--vrt-text-muted);font-weight:700;margin-bottom:6px}.vrt .vrt-card-text{margin:0;padding:0;font-size:0.95rem;line-height:1.55;color:var(--vrt-text)}.vrt .vrt-card-note{margin:0 0 10px 0;padding:0;font-size:0.85rem;line-height:1.5;color:var(--vrt-text-muted)}.vrt .vrt-card a{color:var(--vrt-link);font-weight:700;text-decoration:underline;text-underline-offset:3px}.vrt .vrt-card a:hover,.vrt .vrt-card a:focus{color:var(--vrt-text)}.vrt .vrt-card-link{display:inline-block;margin-top:8px}.vrt .vrt-singer-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}.vrt .vrt-singer-list li{margin:0;padding:10px 12px;border-radius:10px;background:var(--vrt-bg-alt);font-size:0.95rem;line-height:1.45}.vrt .vrt-singer-name{font-weight:800}.vrt .vrt-singer-range{font-family:ui-monospace,monospace;font-size:0.85rem;color:var(--vrt-text-muted)}.vrt .vrt-singer-meta{display:block;font-size:0.85rem;color:var(--vrt-text-muted);margin-top:2px}.vrt .vrt-btn-share{width:auto;flex:1 1 160px;max-width:220px}.vrt .vrt-btn-restart{max-width:140px}.vrt .vrt-btn-alt{margin-top:16px}@media (min-width:768px){.vrt .vrt-metrics-grid{grid-template-columns:repeat(4,1fr)}.vrt .vrt-metric-span2{grid-column:span 2}.vrt .vrt-type-grid{grid-template-columns:1fr 1fr}}@media (prefers-reduced-motion:reduce){.vrt *,.vrt *::before,.vrt *::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}}