:root{--bg-primary: #1a1a2e;--bg-surface: #2a2a3e;--bg-surface-hover: #2f2f48;--border: #3a3a50;--border-subtle: #444;--accent: #4a9;--accent-hover: #5cb;--warning: #e94;--danger: #e55;--text-primary: #e0e0e0;--text-secondary: #ccc;--text-muted: #888;--text-dim: #9090a8}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg-primary);color:var(--text-primary);font-family:Segoe UI,system-ui,sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh}#app{max-width:900px;width:100%;padding:24px}#logo svg{width:280px;height:auto}#score{font-size:.85rem;font-family:monospace;color:#aaa;height:1.4rem;display:flex;gap:16px;max-width:500px}.score-correct{color:var(--accent)}.score-wrong{color:var(--danger)}.score-total{color:var(--text-muted)}#staff-container,#trumpet-container{width:100%;max-width:500px}#trumpet-container{margin-top:-20px}#staff-container svg,#trumpet-container svg{display:block;width:100%;height:auto}#status-slot{width:100%;max-width:500px;position:relative;height:2rem}#timer-bar{width:100%;height:6px;background:var(--bg-surface);border-radius:3px;overflow:hidden;position:absolute;left:0;top:50%;transform:translateY(-50%)}#timer-fill{height:100%;width:100%;background:var(--accent);border-radius:3px;transition:none}#timer-fill.warning{background:var(--warning)}#timer-fill.critical{background:var(--danger)}#feedback{font-size:1.2rem;font-weight:600;width:100%;text-align:center;position:absolute;left:0;top:50%;transform:translateY(-50%)}#feedback.correct{color:var(--accent)}#feedback.incorrect{color:var(--danger)}#instructions{font-size:.85rem;color:var(--text-dim);text-align:center;line-height:1.6;max-width:500px}kbd{display:inline-block;padding:2px 6px;font-family:monospace;font-size:.85rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:3px;color:var(--text-secondary)}#start-btn{padding:10px 32px;font-size:1rem;font-weight:600;background:var(--accent);color:var(--bg-primary);border:none;border-radius:6px;cursor:pointer;letter-spacing:.05em}#start-btn:hover{background:var(--accent-hover)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}#back-btn{align-self:flex-start;background:none;border:none;color:var(--accent);font-size:.95rem;cursor:pointer;padding:4px 0;font-family:inherit}#back-btn:hover{color:var(--accent-hover)}#landing{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%}.tagline{color:var(--text-muted);font-size:1rem;margin-top:-12px}#mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;width:100%}.mode-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;padding:20px 16px;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;transition:border-color .15s,background .15s;position:relative}.mode-card:hover{border-color:var(--accent);background:var(--bg-surface-hover)}.mode-icon{width:32px;height:32px;color:var(--accent)}.mode-card-title{font-weight:600;font-size:.95rem;color:var(--text-primary)}.mode-card-desc{font-size:.8rem;color:var(--text-muted);line-height:1.3}#settings-link{background:none;border:none;color:var(--text-dim);font-size:.9rem;cursor:pointer;padding:8px 16px;font-family:inherit}#settings-link:hover{color:var(--text-muted)}#fingering-chart{display:flex;flex-direction:column;align-items:stretch;gap:16px;width:100%}.fingering-title{font-size:1.3rem;font-weight:600;color:var(--text-primary);text-align:center}.chart-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px;align-self:center}.chart-controls .setting-group{max-width:none;width:auto;background:none;border:none;padding:0;border-radius:0}#fingering-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}.fingering-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:8px 6px;display:flex;flex-direction:column;align-items:center;gap:4px}.fingering-card-name{font-size:.85rem;font-weight:600;color:var(--text-primary);font-family:monospace}.fingering-card-staff{width:48px}.fingering-card-staff svg{display:block;width:100%;height:auto}.fingering-card-valves{width:54px;height:22px}.fingering-card-label{font-size:.65rem;color:var(--text-muted);font-family:monospace}#sound-indicator{position:fixed;top:12px;right:12px;background:none;border:none;color:var(--text-dim);cursor:pointer;padding:6px;border-radius:6px;transition:color .15s;z-index:100}#sound-indicator:hover{color:var(--accent)}#settings-view{display:flex;flex-direction:column;align-items:stretch;gap:20px;width:100%;max-width:500px;align-self:center}.settings-title{font-size:1.3rem;font-weight:600;color:var(--text-primary);text-align:center}.setting-group{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px}.setting-label{font-size:.9rem;color:var(--text-secondary);white-space:nowrap}.segmented-control{display:flex;background:var(--bg-primary);border-radius:6px;overflow:hidden;border:1px solid var(--border)}.seg-btn{padding:6px 12px;font-size:.8rem;font-family:inherit;background:none;border:none;color:var(--text-muted);cursor:pointer;transition:background .15s,color .15s}.seg-btn:not(:last-child){border-right:1px solid var(--border)}.seg-btn:hover{color:var(--text-secondary)}.seg-btn.active{background:var(--accent);color:var(--bg-primary);font-weight:600}.toggle-btn{position:relative;width:44px;height:24px;background:var(--border);border:none;border-radius:12px;cursor:pointer;transition:background .2s;flex-shrink:0}.toggle-btn.on{background:var(--accent)}.toggle-knob{position:absolute;top:3px;left:3px;width:18px;height:18px;background:var(--text-primary);border-radius:50%;transition:transform .2s}.toggle-btn.on .toggle-knob{transform:translate(20px)}#endless-header{display:flex;justify-content:space-between;align-items:center;max-width:500px;width:100%;font-family:monospace}#endless-score{color:var(--accent);font-weight:600;font-size:1.2rem}#endless-best{color:var(--text-muted);font-size:.85rem}#endless-game-area{position:relative;width:100%;max-width:500px;display:flex;flex-direction:column;align-items:center}#endless-gameover{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#1a1a2ed9;border-radius:8px;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:10}#endless-gameover.visible{opacity:1;pointer-events:auto}.gameover-title{font-size:1.4rem;font-weight:700;color:var(--danger);margin-bottom:12px}.gameover-score{font-size:2rem;font-weight:700;color:var(--text-primary);font-family:monospace}.gameover-time{font-size:.9rem;color:var(--text-muted);margin-top:4px}.gameover-best{font-size:.9rem;color:var(--accent);margin-top:8px;font-weight:600}.gameover-newbest{color:var(--warning);font-weight:700;font-size:1rem;margin-top:8px}#endless-score.pulse{animation:score-pulse .3s ease-out}@keyframes score-pulse{0%{transform:scale(1.25);color:var(--accent-hover)}to{transform:scale(1)}}.touch-controls{display:none;flex-direction:column;gap:8px;width:100%;max-width:500px}.valve-buttons{display:flex;gap:8px}.valve-btn{flex:1;min-height:56px;font-size:1.4rem;font-weight:700;font-family:inherit;background:var(--bg-surface);border:2px solid var(--border);border-radius:8px;color:var(--text-secondary);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;cursor:pointer}.valve-btn.pressed{background:var(--accent);color:var(--bg-primary);border-color:var(--accent)}.open-btn{width:100%;min-height:48px;font-size:1.1rem;font-weight:600;font-family:inherit;background:var(--bg-surface);border:2px solid var(--border);border-radius:8px;color:var(--text-secondary);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;cursor:pointer}.open-btn.pressed{background:var(--accent);color:var(--bg-primary);border-color:var(--accent)}.touch-hint{display:none}@media(pointer:coarse){.touch-controls{display:flex}.kbd-hint{display:none}.touch-hint{display:inline}.key-hint{display:none}}.session-summary{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#1a1a2eeb;border-radius:8px;z-index:10;gap:8px;padding:24px}.summary-title{font-size:1.3rem;font-weight:700;color:var(--accent);margin-bottom:4px}.summary-accuracy{font-size:2.4rem;font-weight:700;color:var(--text-primary);font-family:monospace}.summary-stats{font-size:.85rem;font-family:monospace;display:flex;gap:12px}.summary-duration{font-size:.85rem;color:var(--text-muted)}.summary-missed{margin-top:8px;text-align:center}.summary-missed-title{font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.summary-missed-row{font-size:.75rem;color:var(--text-muted);font-family:monospace}.summary-actions{display:flex;gap:12px;margin-top:12px}.summary-btn{padding:8px 24px;font-size:.9rem;font-weight:600;border:none;border-radius:6px;cursor:pointer;font-family:inherit}.summary-btn.primary{background:var(--accent);color:var(--bg-primary)}.summary-btn.primary:hover{background:var(--accent-hover)}.summary-btn.secondary{background:var(--bg-surface);color:var(--text-secondary);border:1px solid var(--border)}.summary-btn.secondary:hover{background:var(--bg-surface-hover)}#stats-view{display:flex;flex-direction:column;align-items:stretch;gap:20px;width:100%;max-width:500px;align-self:center}.stats-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.stat-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:12px 8px;text-align:center}.stat-value{font-size:1.3rem;font-weight:700;color:var(--accent);font-family:monospace}.stat-label{font-size:.65rem;color:var(--text-muted);margin-top:4px}.stats-section-title{font-size:.9rem;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.stats-chart{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px;text-align:center}.stats-chart svg{margin-top:8px}.stats-empty{font-size:.8rem;color:var(--text-muted);padding:8px 0}.stats-missed{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px}.stats-missed-row{display:flex;align-items:center;gap:10px;padding:4px 0}.stats-mini-staff{width:36px;flex-shrink:0}.stats-mini-staff svg{display:block;width:100%;height:auto}.stats-missed-info{display:flex;flex-direction:column;gap:2px}.stats-missed-name{font-size:.85rem;font-weight:600;color:var(--text-primary);font-family:monospace}.stats-missed-ratio{font-size:.7rem;color:var(--text-muted);font-family:monospace}.stats-modes{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px}.stats-mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.stats-mode-card{text-align:center;padding:8px 4px}.stats-mode-label{font-size:.8rem;font-weight:600;color:var(--text-primary);margin-bottom:4px}.stats-mode-stat{font-size:.7rem;color:var(--text-muted);font-family:monospace}.stats-clear-btn{padding:8px 20px;font-size:.8rem;font-weight:600;background:none;color:var(--text-muted);border:1px solid var(--border);border-radius:6px;cursor:pointer;font-family:inherit;align-self:center}.stats-clear-btn:hover,.stats-clear-btn.confirming{color:var(--danger);border-color:var(--danger)}.landing-links{display:flex;gap:8px}#help-view{display:flex;flex-direction:column;align-items:stretch;gap:20px;width:100%;max-width:500px;align-self:center}.help-section{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px}.help-section-title{font-size:.95rem;font-weight:600;color:var(--accent);margin-bottom:8px}.help-text{font-size:.85rem;color:var(--text-secondary);line-height:1.5;margin-bottom:6px}.help-text:last-child{margin-bottom:0}.help-diagram{display:flex;justify-content:center;margin-top:8px}.help-staff-demo{display:flex;gap:24px;justify-content:center;margin-top:8px}.help-staff-item{display:flex;flex-direction:column;align-items:center;gap:4px}.help-staff-item svg{width:48px;height:auto}.help-staff-label{font-size:.7rem;color:var(--text-muted);font-family:monospace}.help-controls{margin-top:8px}.help-control-row{display:flex;align-items:center;gap:12px;padding:4px 0;font-size:.85rem;color:var(--text-secondary)}.help-control-key{min-width:60px;text-align:right}.finish-btn{padding:6px 20px;font-size:.85rem;font-weight:600;background:var(--bg-surface);color:var(--text-secondary);border:1px solid var(--border);border-radius:6px;cursor:pointer;font-family:inherit}.finish-btn:hover{background:var(--bg-surface-hover)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}#view-container{display:flex;flex-direction:column;align-items:center;gap:16px;width:100%;outline:none}