:root{--bg: #0e1116;--bg-2: #151a22;--panel: #1b212b;--panel-2: #222a36;--line: #2c3543;--text: #e8edf5;--muted: #9aa7b8;--accent: #4ade80;--accent-2: #38bdf8;--warn: #fbbf24;--bad: #f87171;--radius: 14px;--shadow: 0 6px 24px rgba(0, 0, 0, .35);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:radial-gradient(1200px 600px at 50% -10%,#1a2230,var(--bg)) fixed;color:var(--text);display:flex;flex-direction:column}#topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;border-bottom:1px solid var(--line);background:#0e1116b3;backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}.brand{font-size:18px;font-weight:700;background:none;border:none;color:var(--text);cursor:pointer;letter-spacing:.2px}.mic-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);cursor:pointer;user-select:none}.mic-dot{width:9px;height:9px;border-radius:50%;background:#555;transition:background .2s}.mic-status.connecting .mic-dot{background:var(--warn);animation:pulse 1s infinite}.mic-status.live .mic-dot{background:var(--accent);box-shadow:0 0 8px var(--accent)}.mic-status.live .mic-label{color:var(--accent)}.mic-meter{width:56px;height:6px;border-radius:3px;background:var(--panel-2);overflow:hidden}.mic-meter-fill{display:block;width:100%;height:100%;background:linear-gradient(90deg,var(--accent-2),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .06s linear}@keyframes pulse{50%{opacity:.4}}#app{flex:1;overflow-y:auto;padding:22px;display:flex;flex-direction:column;align-items:center}.screen{width:100%;max-width:920px}.screen-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.screen-head h2{margin:0;font-size:24px}.screen-head p{margin:2px 0 0;color:var(--muted);font-size:14px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.btn{font:inherit;font-weight:600;color:var(--text);background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:9px 16px;cursor:pointer;transition:transform .06s,background .15s,border-color .15s}.btn:hover{background:#2b3543}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--accent);color:#06210f;border-color:transparent}.btn-primary:hover{background:#5ee894}.btn-ghost{background:transparent}.btn:disabled{opacity:.5;cursor:default}.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--panel-2);color:var(--muted);border:1px solid var(--line)}.pill.good{color:var(--accent);border-color:#4ade8066}.pill.bad{color:var(--bad);border-color:#f8717166}.big-chord{font-size:72px;font-weight:800;line-height:1;letter-spacing:1px}.big-chord.hit{color:var(--accent);text-shadow:0 0 24px rgba(74,222,128,.5)}.big-chord.miss{color:var(--bad)}.big-chord.idle{color:var(--muted)}.menu-screen{width:100%;max-width:920px;text-align:center}.hero h1{font-size:46px;margin:18px 0 6px;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.tagline{color:var(--muted);margin:0 0 26px;font-size:16px}.menu-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.menu-card{text-align:left;display:flex;flex-direction:column;gap:6px;position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;cursor:pointer;color:var(--text);transition:transform .1s,border-color .15s,background .15s}.menu-card:hover{transform:translateY(-3px);border-color:var(--accent-2)}.menu-icon{font-size:34px}.menu-title{font-size:19px;font-weight:700}.menu-desc{font-size:13px;color:var(--muted)}.menu-tag{position:absolute;top:14px;right:14px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--accent-2)}.hint{color:var(--muted);font-size:13px;margin:10px 0 26px}.menu-section-title{text-align:left;font-size:14px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin:26px 0 12px;font-weight:700}.menu-screen .menu-grid{margin-bottom:4px}.xp-wrap{display:inline-flex;align-items:center;gap:10px;margin-top:8px;font-size:13px;color:var(--muted)}.xp-level{font-weight:700;color:var(--accent)}.xp-bar{width:180px;height:8px;border-radius:4px;background:var(--panel-2);overflow:hidden;border:1px solid var(--line)}.xp-fill{display:block;width:100%;height:100%;transform-origin:left;background:linear-gradient(90deg,var(--accent-2),var(--accent));transition:transform .4s ease}.chord-card{display:inline-flex;flex-direction:column;align-items:center;gap:6px}.chord-card-label{font-weight:700;font-size:16px}.chord-diagram{display:block;width:140px;height:auto}.chord-diagram-sm{width:90px}.chord-diagram-md{width:140px}.chord-diagram-lg{width:200px}.cd-dot{fill:var(--text)}.cd-finger{fill:var(--panel);font-size:9px;font-weight:700}.chord-diagram-lg .cd-finger{font-size:13px}.cd-open{fill:none;stroke:var(--muted);stroke-width:1.4}.cd-mute{fill:var(--muted);font-size:11px;font-weight:700}.cd-barre{fill:var(--text)}.cd-basefret{fill:var(--muted);font-size:11px;font-weight:700}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(20px);background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:12px 18px;font-size:14px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.mic-gate{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;padding:48px 18px}.mic-gate .big{font-size:52px}