@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@500;700&family=Noto+Sans+KR:wght@400;500;700&family=Sora:wght@500;600;700;800&display=swap";:root{--bg-0: #0a0d16;--bg-1: #101626;--bg-2: #182039;--surface: rgba(12, 19, 35, .9);--surface-soft: rgba(16, 24, 45, .78);--surface-card: rgba(10, 16, 30, .76);--line: rgba(163, 183, 214, .34);--line-strong: rgba(233, 191, 118, .56);--ink: #f8fbff;--ink-soft: rgba(219, 231, 255, .72);--accent: #efc074;--accent-2: #5ec5ba;--danger: #f07a6d;--ok: #6ed39d;--radius-lg: 22px;--radius-md: 14px;--radius-sm: 10px;--control-label-width: 88px;--layout-gap: 12px;--shadow-1: 0 26px 70px rgba(3, 6, 12, .62);--shadow-2: 0 14px 36px rgba(4, 8, 18, .44)}*,*:before,*:after{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;color:var(--ink);font-family:Noto Sans KR,Sora,sans-serif;background:radial-gradient(1000px 520px at -10% -20%,rgba(48,122,133,.22),transparent 58%),radial-gradient(1200px 760px at 104% -26%,rgba(239,192,116,.16),transparent 56%),linear-gradient(164deg,var(--bg-0),var(--bg-1) 52%,var(--bg-2))}.app-shell{position:relative;max-width:1460px;margin:0 auto;padding:28px 12px 36px;isolation:isolate}.ambient{position:absolute;border-radius:999px;filter:blur(58px);z-index:-3;pointer-events:none}.ambient-a{width:360px;height:360px;top:36px;left:-140px;background:#5ec5ba42}.ambient-b{width:440px;height:440px;top:200px;right:-190px;background:#efc0743b}.grain{position:absolute;top:0;right:0;bottom:0;left:0;z-index:-2;pointer-events:none;opacity:.2;background:repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0,rgba(255,255,255,.03) 1px,transparent 1px,transparent 3px),radial-gradient(circle at 10% 20%,rgba(255,255,255,.04),transparent 45%);-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 120%);mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 120%)}.hero{border-radius:0;border:0;background:transparent;padding:0;box-shadow:none;position:relative;overflow:visible;animation:panel-enter .62s ease-out both}.hero:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;border:0;pointer-events:none}.hero-top-row{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);align-items:center;gap:var(--layout-gap)}.hero-title-row{display:flex;align-items:baseline;gap:10px;min-width:0}.eyebrow{margin:0;letter-spacing:.16em;text-transform:uppercase;font-size:.73rem;color:var(--accent-2);font-family:JetBrains Mono,monospace}.title{margin:0;font-size:clamp(1rem,2.7vw,1.9rem);line-height:1.03;font-family:Sora,Noto Sans KR,sans-serif;font-weight:700;text-wrap:balance}.subtitle{margin:12px 0 0;max-width:58ch;color:var(--ink-soft);font-size:clamp(.92rem,1.5vw,1.04rem)}.practice-mode-bar{margin-top:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;width:100%;max-width:none;padding:4px;border-radius:12px;border:1px solid rgba(170,192,228,.36);background:linear-gradient(180deg,#202e48b3,#121c2ed1),#090f1dd6}.practice-mode-btn{min-height:42px;padding:0 12px;font-size:.85rem;font-weight:700;letter-spacing:.01em;border-radius:8px;border:1px solid transparent;background:transparent;color:#ddebffc7;box-shadow:none;transition:background .15s ease,border-color .15s ease,color .15s ease}.practice-mode-btn:hover{transform:none;border-color:#bdd2f670;background:#3c51743d;box-shadow:none}.practice-mode-btn:active{transform:none;box-shadow:none}.practice-mode-btn.active{color:#f9fcff;border-color:#f5cd84ad;background:linear-gradient(132deg,#efc0744f,#5ec5ba33),#23334ee6;box-shadow:inset 0 1px #ffffff3d,0 4px 14px #040a1457}.studio-grid{margin-top:var(--layout-gap);display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);gap:var(--layout-gap);align-items:start}.control-stack{display:grid;gap:var(--layout-gap);position:sticky;top:12px;animation:panel-enter .64s ease-out 90ms both}.metro-bar{border-radius:var(--radius-md);border:1px solid var(--line);background:var(--surface-soft);padding:14px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;box-shadow:var(--shadow-2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.metro-title{grid-column:1 / -1;display:inline-flex;align-items:center;gap:10px;font-size:.96rem}.metro-dot{width:11px;height:11px;border-radius:50%;background:#ffffff59}.metro-dot.on{background:var(--accent);box-shadow:0 0 0 5px #efc07429;animation:metronome-blink 1s linear infinite}.metro-field{display:grid;gap:5px;font-size:.72rem;color:var(--ink-soft)}.metro-control-grid{grid-column:1 / -1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.metro-field input,.metro-field select{width:100%;min-height:38px}.metro-play-btn{width:100%;min-height:38px;padding:0;border-radius:10px;font-family:JetBrains Mono,monospace;font-size:1rem;line-height:1}.metro-play-btn.running{border-color:#f27e69bd;color:#feeceb;background:linear-gradient(180deg,#d86656,#be4f40)}.metro-beat-control{min-width:0}.metro-beat-slider-row{grid-column:1 / -1;min-width:0}.metro-volume-slider-row{grid-column:1 / -1;min-width:0;display:grid;gap:6px}.metro-slider-label{font-size:.72rem;color:var(--ink-soft)}.metro-volume-slider-wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px}.metro-beat-slider,.metro-volume-slider{width:100%;min-height:20px;height:20px;margin:0;padding:0;border:0;border-radius:0;background:transparent;cursor:pointer;-moz-appearance:none;appearance:none;-webkit-appearance:none}.metro-beat-slider:disabled,.metro-volume-slider:disabled{cursor:not-allowed}.metro-beat-slider:focus-visible,.metro-volume-slider:focus-visible{outline:none}.metro-beat-slider::-webkit-slider-runnable-track,.metro-volume-slider::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:linear-gradient(180deg,#dceaff4d,#829abc47);border:1px solid rgba(180,199,230,.38)}.metro-beat-slider::-webkit-slider-thumb,.metro-volume-slider::-webkit-slider-thumb{width:20px;height:20px;margin-top:-8px;box-sizing:border-box;border-radius:50%;border:1px solid rgba(214,229,255,.72);background:linear-gradient(180deg,#2c3c59,#1a273d);box-shadow:inset 0 1px #ffffff42,0 2px 8px #03081280;-moz-appearance:none;appearance:none;-webkit-appearance:none}.metro-beat-slider::-moz-range-track,.metro-volume-slider::-moz-range-track{height:4px;border-radius:999px;background:linear-gradient(180deg,#dceaff4d,#829abc47);border:1px solid rgba(180,199,230,.38)}.metro-beat-slider::-moz-range-progress,.metro-volume-slider::-moz-range-progress{height:4px;border-radius:999px;background:linear-gradient(180deg,#f2ce84,#e7b561)}.metro-beat-slider::-moz-range-thumb,.metro-volume-slider::-moz-range-thumb{width:20px;height:20px;box-sizing:border-box;border-radius:50%;border:1px solid rgba(214,229,255,.72);background:linear-gradient(180deg,#2c3c59,#1a273d);box-shadow:inset 0 1px #ffffff42,0 2px 8px #03081280}.metro-volume-slider-value{min-width:42px;text-align:right;font-family:JetBrains Mono,monospace;font-size:.74rem;font-weight:700;color:#e8f2ffeb}.metro-beat-slider-wrap{position:relative;min-height:30px;display:flex;align-items:center}.metro-subdivision-field{align-self:end}.metro-beat-slider-value{position:absolute;top:50%;transform:translate(-50%,-50%);width:20px;height:20px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-family:JetBrains Mono,monospace;font-size:.62rem;font-weight:700;color:#0e1524;background:linear-gradient(180deg,#ffd27d,#f3b956);border:1px solid rgba(255,232,187,.9);box-shadow:inset 0 1px #ffffff73,0 2px 8px #060a126b;pointer-events:none;z-index:2}.metro-bar.beat-locked .metro-beat-control{color:#acbcd4cc}.metro-bar.beat-locked .metro-beat-control select{border-color:#8698b575;background:#0e1626ad;color:#adbdd6eb;cursor:not-allowed}.metro-bar.beat-locked .metro-beat-slider::-webkit-slider-runnable-track{background:linear-gradient(180deg,#99a8c12e,#6f809e29);border-color:#8193b04d}.metro-bar.beat-locked .metro-beat-slider::-webkit-slider-thumb{border-color:#91a2be85;background:linear-gradient(180deg,#36445e,#27354c);box-shadow:inset 0 1px #ffffff29,0 2px 6px #0308124d}.metro-bar.beat-locked .metro-beat-slider::-moz-range-track{background:linear-gradient(180deg,#99a8c12e,#6f809e29);border-color:#8193b04d}.metro-bar.beat-locked .metro-beat-slider::-moz-range-progress{background:linear-gradient(180deg,#acbcd475,#90a2be6b)}.metro-bar.beat-locked .metro-beat-slider::-moz-range-thumb{border-color:#91a2be85;background:linear-gradient(180deg,#36445e,#27354c);box-shadow:inset 0 1px #ffffff29,0 2px 6px #0308124d}.metro-bar.beat-locked .metro-beat-slider-value{color:#c6d6ece6;background:linear-gradient(180deg,#415273,#2a3953);border-color:#97a8c28a;box-shadow:inset 0 1px #fff3,0 2px 6px #060a124d}.metro-lights{grid-column:1 / -1;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:8px}.metro-light{height:9px;border-radius:999px;background:#d2e1f83d;border:1px solid rgba(190,208,236,.35);box-shadow:inset 0 1px #ffffff2e;transition:background .14s ease,box-shadow .14s ease,border-color .14s ease}.metro-light.on{background:linear-gradient(180deg,#f3cd85,#e8b35f);border-color:#ffe0a8d6;box-shadow:inset 0 1px #fff6,0 0 0 3px #efc0742e}.menu-bar{display:grid;gap:8px}.menu-btn{position:relative;border:1px solid var(--line);border-radius:var(--radius-md);min-height:64px;padding:9px 12px;text-align:left;background:linear-gradient(140deg,rgba(94,197,186,.09),transparent 55%),var(--surface-soft);color:var(--ink);display:flex;align-items:center;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;box-shadow:0 8px 20px #060c1842}.menu-btn:nth-child(1){animation:panel-enter .58s ease-out 80ms both}.menu-btn:nth-child(2){animation:panel-enter .58s ease-out .13s both}.menu-btn:nth-child(3){animation:panel-enter .58s ease-out .18s both}.menu-btn:nth-child(4){animation:panel-enter .58s ease-out .23s both}.menu-btn:hover{transform:translateY(-2px);border-color:#efc07499}.menu-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.menu-btn span{font-size:.98rem;font-weight:700}.menu-btn .menu-index{position:absolute;right:10px;top:9px;font-family:JetBrains Mono,monospace;font-size:.64rem;line-height:1;color:#bacdee6b}.menu-btn.active{border-color:var(--line-strong);background:linear-gradient(115deg,#efc07440,#5ec5ba24),#111c2cf2;box-shadow:0 14px 30px #02060d85}.screen{border-radius:var(--radius-lg);border:0;background:radial-gradient(1200px 800px at 120% -20%,rgba(94,197,186,.13),transparent 58%),#070d19eb;box-shadow:var(--shadow-1);min-height:560px;overflow:hidden;animation:panel-enter .66s ease-out .15s both}.screen-head{border-bottom:1px solid var(--line);padding:18px 20px;display:flex;align-items:end;justify-content:space-between;gap:20px;background:linear-gradient(90deg,rgba(239,192,116,.08),transparent 45%),#0a1222cc}.screen-head h2{margin:4px 0 0;font-family:Sora,Noto Sans KR,sans-serif;font-size:1.56rem;font-weight:700}.screen-kicker{margin:0;font-family:JetBrains Mono,monospace;text-transform:uppercase;letter-spacing:.08em;font-size:.67rem;color:#c5dafeb8}.screen-head p{margin:0;color:var(--ink-soft);max-width:32ch;font-size:.85rem;text-align:right}.screen-body{padding:0}.drum-coming-screen{margin-top:var(--layout-gap);min-height:280px}.drum-coming-card{min-height:280px;display:grid;align-content:center;justify-items:center;text-align:center;gap:8px}.card{border-radius:calc(var(--radius-lg) - 4px);border:1px solid rgba(151,174,212,.32);background:linear-gradient(165deg,rgba(239,192,116,.08),transparent 30%),var(--surface-card);padding:16px;box-shadow:inset 0 1px #ffffff0f}.card h2{margin:0 0 12px;font-size:1.1rem}.row{display:flex;flex-wrap:wrap;gap:10px;align-items:end}label{display:grid;gap:6px;color:var(--ink-soft);font-size:.77rem}input,select,button,textarea{font:inherit}input,select,textarea{min-height:38px;border-radius:var(--radius-sm);border:1px solid rgba(182,203,236,.3);color:var(--ink);background:#080e1ceb;padding:7px 11px;font-size:.85rem;font-weight:500}input::placeholder,textarea::placeholder{color:#b8cdec73}input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button{min-height:38px;border-radius:var(--radius-sm);border:1px solid rgba(169,189,225,.48);color:#f0f8fff0;background:linear-gradient(180deg,#2d3e5bf5,#152137f5),linear-gradient(120deg,rgba(239,192,116,.12),transparent 46%);padding:7px 13px;cursor:pointer;box-shadow:inset 0 1px #ffffff2e,0 7px 16px #0207106b;transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease,background .14s ease;font-size:.86rem;font-weight:500;letter-spacing:.01em}button:hover{transform:translateY(-1px);border-color:#efc074c7;background:linear-gradient(180deg,#384b6cfa,#1a2842fa),linear-gradient(120deg,rgba(239,192,116,.2),transparent 50%);box-shadow:inset 0 1px #ffffff38,0 10px 20px #01050c80}button:active{transform:translateY(0);box-shadow:inset 0 1px #ffffff1a,0 4px 10px #01050c66}button:disabled{cursor:not-allowed;opacity:.55;transform:none;filter:grayscale(.25);box-shadow:none}.muted{margin:9px 0;color:var(--ink-soft);font-size:.83rem}.list{margin:0;padding-left:18px}.split-list{margin-top:10px;display:grid;gap:7px}.split-list li{border-radius:11px;border:1px solid rgba(168,192,230,.28);background:#080e1a94;list-style-position:inside;padding:9px 11px}.error{margin:8px 0;color:var(--danger);font-size:.84rem}.ok{margin:8px 0;color:var(--ok);font-size:.84rem}.filter-stack{display:grid;gap:10px;margin-bottom:10px}.filter-row{display:grid;grid-template-columns:var(--control-label-width) minmax(0,1fr);column-gap:10px;align-items:center}.filter-label{color:var(--ink-soft);font-size:.75rem;min-width:var(--control-label-width);white-space:nowrap}.root-controls{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;min-width:0}.display-toggle{display:inline-flex;gap:6px;align-items:center;padding-left:4px}.scale-controls{display:flex;flex-wrap:wrap;align-items:end;gap:8px 24px;min-width:0}.option-cluster{display:flex;align-items:end;gap:8px;min-width:0}.minor-type-cluster{align-items:end}.minor-type-select{min-height:32px;border-radius:999px;padding:4px 12px}.cluster-label{color:var(--ink-soft);font-size:.75rem;white-space:nowrap;padding-bottom:8px}.option-strip{display:flex;flex-wrap:nowrap;gap:6px;overflow-x:auto;padding-bottom:2px;scrollbar-width:thin}.option-btn{min-height:32px;padding:4px 12px;border-radius:999px;background:linear-gradient(180deg,#202e48e6,#101b2de6);border:1px solid rgba(169,191,227,.44);color:#ebf5fff0;white-space:nowrap;font-size:.8rem;font-weight:500;box-shadow:inset 0 1px #ffffff24,0 4px 10px #02060e57}.option-btn.active{background:linear-gradient(180deg,#f8d8a1fa,#e9bc73f0);color:#1a2230;border-color:#ffeac1f0;box-shadow:inset 0 1px #ffffff75,0 7px 16px #02071070}.position-row{display:grid;grid-template-columns:var(--control-label-width) minmax(0,1fr);column-gap:10px;align-items:center;align-self:end}.position-label{color:var(--ink-soft);font-size:.75rem;min-width:var(--control-label-width)}.position-controls{display:flex;flex-wrap:wrap;align-items:center;gap:7px 10px}.position-group{display:flex;gap:6px;flex-wrap:wrap}.position-actions{display:flex;flex-wrap:wrap;gap:6px}.practice-controls-row{margin-top:10px}.position-btn{min-height:32px;padding:4px 12px;border-radius:999px;background:linear-gradient(180deg,#202e48e6,#101b2de6);border:1px solid rgba(169,191,227,.44);color:#ebf5fff0;font-size:.8rem;font-weight:500;box-shadow:inset 0 1px #ffffff24,0 4px 10px #02060e57}.position-btn.active{background:linear-gradient(180deg,#f8d8a1fa,#e9bc73f0);color:#1a2230;border-color:#ffeac1f0;box-shadow:inset 0 1px #ffffff75,0 7px 16px #02071070}.practice-controls{display:grid;grid-template-columns:var(--control-label-width) minmax(0,1fr);column-gap:10px;align-items:center}.practice-row-label{color:var(--ink-soft);font-size:.75rem;min-width:var(--control-label-width)}.practice-control-group{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;justify-self:start}.practice-select{min-height:32px;border-radius:999px;padding:4px 12px;border:1px solid rgba(169,191,227,.44);background:linear-gradient(180deg,#202e48e6,#101b2de6);color:#ebf5fff0;font-size:.8rem;font-weight:500}.practice-run-btn{min-height:38px;padding:7px 13px;font-size:.86rem;font-weight:500;display:inline-flex;align-items:center;justify-content:center}.practice-run-icon{line-height:1;font-size:.92rem;transform:translate(1px)}.practice-stop-icon{line-height:1;font-size:.8rem}.practice-field{min-width:92px}.practice-stop{border-color:#f27e69bd;color:#feeceb;background:linear-gradient(180deg,#d86656,#be4f40)}.drum-preset-row{margin-top:8px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px;align-items:center}.drum-preset-save-btn{min-height:32px;padding:4px 8px;border-radius:999px;background:linear-gradient(180deg,#253554e6,#101d32e6);border:1px solid rgba(169,191,227,.44);color:#ebf5fff0;font-size:.76rem;font-weight:600;white-space:nowrap}.drum-preset-save-btn:disabled{opacity:.45;cursor:not-allowed}.drum-grid-scroll{margin-top:10px;overflow-x:hidden;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36);padding:8px;background:#070c1880}.drum-machine-grid{width:100%;min-width:0;display:grid;gap:1px}.drum-step-row{display:grid;grid-template-columns:220px repeat(var(--drum-step-count, 16),minmax(0,1fr));gap:4px;align-items:center}.drum-track-head{font-size:.72rem;color:#d2e2f8db;text-align:center}.drum-track-control{display:flex;justify-content:center;align-items:center;min-height:24px}.drum-track-label{font-size:.66rem;line-height:1;color:var(--ink-soft);text-align:center;white-space:nowrap}.drum-track-select{width:100%;max-width:none;min-width:0;min-height:24px;border-radius:6px;border:1px solid rgba(154,176,214,.36);background:#0c1628c7;color:#e8f3fff5;padding:2px 6px;font-size:.68rem}.drum-track-preview-btn{min-height:22px;padding:0;border-radius:5px;font-size:.76rem;font-weight:700}.drum-step-head{min-height:22px;display:inline-flex;align-items:center;justify-content:center;position:relative;border-radius:3px;border:1px solid rgba(123,136,156,.34);background:#12171ef0;color:#b5bfcfd1;font-size:.64rem;letter-spacing:.01em}.drum-step-head.current{border-color:#e0e8f3c7;background:#303c4fc2;color:#f6fafff5}.drum-step-btn{min-height:24px;padding:0;position:relative;border-radius:3px;border:1px solid rgba(123,136,156,.34);background:#12171ef5;box-shadow:none}.drum-step-btn.active{border-color:#aaf47cc2;background:#86dd55f2;box-shadow:none}.drum-step-btn.current{outline:1px solid rgba(224,232,243,.84);outline-offset:-1px}.drum-step-head.beat-start:before,.drum-step-btn.beat-start:before{content:"";position:absolute;left:-3px;top:0;bottom:0;width:2px;border-radius:0;background:#d3deed5c;box-shadow:none;z-index:3;pointer-events:none}.drum-step-btn:hover,.sheet-maker-step-btn:hover{transform:none;border-color:#91a0b670;background:#171d26f5;box-shadow:none}.drum-step-btn.active:hover,.sheet-maker-step-btn.active:hover{border-color:#aaf47cc2;background:#86dd55f2}.drum-step-btn:active,.sheet-maker-step-btn:active{transform:none;box-shadow:none}.sheet-strip-wrap{margin-top:10px;overflow-x:auto;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36);background:#070c1880;padding:10px}.sheet-strip{min-width:620px;display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:6px}.sheet-cell{min-height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;border:1px solid rgba(154,176,214,.34);background:#0d1628c2;color:#e3efffe6;font-family:JetBrains Mono,monospace;font-size:.86rem;font-weight:700}.sheet-cell.beat-start{border-color:#f5cd849e}.sheet-cell.current{border-color:#78dcb0db;background:linear-gradient(180deg,#4fc99ce0,#2b9a79e6);color:#08131b;box-shadow:inset 0 1px #ffffff61,0 4px 10px #030c0961}.sheet-builder-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:0}.sheet-actions-row{align-items:end}.sheet-status-row{margin-top:9px;display:flex;align-items:center;justify-content:flex-start}.sheet-status-controls{display:inline-flex;align-items:center;gap:8px}.sheet-score-mode-meta{font-size:.78rem;color:#d6e4f8d6;white-space:nowrap}.sheet-note-length-wrap{display:inline-flex;align-items:center;gap:6px}.sheet-note-length-label{color:var(--ink-soft);font-size:.82rem;white-space:nowrap}.sheet-note-length-buttons{display:inline-flex;align-items:center;gap:4px}.sheet-note-length-btn{min-height:24px;padding:0 8px;border-radius:6px;border:1px solid rgba(146,168,204,.4);background:#0e1828e0;color:#ddeafcf2;font-size:.72rem;line-height:1}.sheet-note-length-btn.active{border-color:#78dcb0c7;background:#2b9776eb;color:#eefafffa}.sheet-track-toggle{display:inline-flex;align-items:center;gap:8px;-webkit-user-select:none;user-select:none;cursor:pointer;white-space:nowrap}.sheet-track-toggle-text{color:var(--ink-soft);font-size:.82rem}.sheet-track-toggle-input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}.sheet-track-toggle-slider{position:relative;width:52px;height:28px;border-radius:999px;border:1px solid rgba(157,180,214,.42);background:#1d2a43e6;transition:background .14s ease,border-color .14s ease}.sheet-track-toggle-slider:after{content:"OFF";position:absolute;top:2px;left:2px;width:22px;height:22px;border-radius:50%;background:#e9f4fff5;color:#16233a;display:flex;align-items:center;justify-content:center;font-size:.52rem;font-weight:800;letter-spacing:.02em;box-shadow:0 3px 8px #02081275;transition:transform .14s ease,content .14s ease}.sheet-track-toggle-input:checked+.sheet-track-toggle-slider{border-color:#78dcb0c7;background:#2b9776eb}.sheet-track-toggle-input:checked+.sheet-track-toggle-slider:after{content:"ON";transform:translate(24px)}.sheet-track-toggle-input:focus-visible+.sheet-track-toggle-slider{outline:2px solid var(--accent);outline-offset:2px}.sheet-track-toggle-state{min-width:2.8ch;text-align:center;font-size:.72rem;font-weight:700;letter-spacing:.04em;color:#f0f8fff2}.sheet-editor-meta-row{margin-top:8px;display:grid;grid-template-columns:minmax(200px,1.5fr) minmax(120px,.75fr) minmax(120px,.75fr) auto;gap:8px;align-items:end}.sheet-editor-title-field,.sheet-editor-step-field,.sheet-editor-bar-field{min-width:0}.sheet-editor-bpm-label{margin:0;align-self:end;padding-bottom:7px;white-space:nowrap}.sheet-saved-sheet-field{min-width:220px;flex:1 1 240px}.sheet-create-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#040810a8;display:grid;place-items:center;padding:16px}.sheet-create-modal{width:min(640px,100%);border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36);background:linear-gradient(165deg,rgba(239,192,116,.08),transparent 30%),var(--surface-card);box-shadow:var(--shadow-2);padding:14px}.sheet-create-modal-title{margin:0 0 10px;font-size:1rem}.sheet-create-modal-actions{margin-top:10px;display:flex;justify-content:end;gap:8px}.sheet-maker-scroll{margin-top:10px;overflow-x:auto;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36);padding:8px;background:#070c1880;-webkit-user-select:none;user-select:none}.sheet-score-view{margin-top:10px}.sheet-score-paper{width:min(100%,980px);margin:0 auto;border-radius:6px;border:1px solid rgba(174,185,201,.72);background:#fff;box-shadow:0 16px 38px #02060e61;padding:26px 28px 30px}.sheet-score-notation-wrap{position:relative;overflow-x:auto;overflow-y:hidden}.sheet-score-notation-vexflow{min-height:180px}.sheet-score-notation-vexflow svg{display:block}.sheet-score-bar-highlight{position:absolute;border-radius:8px;border:1px solid rgba(245,205,132,.78);background:#f5cd841f;box-shadow:inset 0 0 0 1px #f5cd842e;transition:left .12s linear,top .12s linear,width .12s linear;pointer-events:none;z-index:2}.sheet-score-playhead{position:absolute;width:2px;border-radius:2px;background:#f5cd84f2;box-shadow:0 0 0 1px #f5cd843d;transform:translate(-50%);pointer-events:none;z-index:3}.sheet-maker-grid{width:100%;min-width:0;display:grid;gap:1px}.sheet-maker-row{display:grid;grid-template-columns:220px repeat(var(--sheet-step-count, 16),minmax(14px,1fr));column-gap:0;row-gap:4px;align-items:center}.sheet-maker-track-head{font-size:.72rem;color:#d2e2f8db;text-align:center;position:sticky;left:0;z-index:4;background:#000;border-radius:6px;box-shadow:1px 0 #9db4d647}.sheet-maker-track-head-empty{border:1px solid rgba(123,136,156,.2)}.sheet-maker-bar-header{align-items:stretch}.sheet-maker-bar-head{min-height:18px;display:inline-flex;align-items:center;justify-content:center;border-radius:3px;border:1px solid rgba(123,136,156,.24);background:#0e1218d1;color:#becadcdb;font-size:.61rem;letter-spacing:.06em;font-weight:700}.sheet-maker-track-control{display:flex;justify-content:center;align-items:center;min-height:24px;position:sticky;left:0;z-index:3;background:#000;border-radius:6px;box-shadow:1px 0 #9db4d647;padding:2px 4px}.sheet-maker-track-label{font-size:.66rem;line-height:1;color:var(--ink-soft);text-align:center;white-space:nowrap}.sheet-maker-track-select{width:100%;max-width:none;min-width:0;min-height:24px;border-radius:6px;border:1px solid rgba(154,176,214,.36);background:#0c1628c7;color:#e8f3fff5;padding:2px 6px;font-size:.68rem}.sheet-maker-track-preview-btn{min-height:22px;padding:0;border-radius:5px;font-size:.76rem;font-weight:700}.drum-settings-list{margin-top:12px;display:grid;gap:8px}.drum-settings-row{display:grid;grid-template-columns:120px minmax(0,1fr) 34px;gap:8px;align-items:center}.drum-settings-track{font-size:.78rem;color:#dae9fceb}.drum-settings-select{width:100%;min-height:30px;border-radius:8px;border:1px solid rgba(154,176,214,.36);background:#0c1628c7;color:#e8f3fff5;padding:4px 8px;font-size:.76rem}.drum-settings-preview-btn{min-height:28px;padding:0;border-radius:7px;font-size:.82rem;font-weight:700}.sheet-maker-head{min-height:22px;display:inline-flex;align-items:center;justify-content:center;position:relative;border-radius:3px;border:1px solid rgba(123,136,156,.34);background:#12171ef0;color:#b5bfcfd1;font-size:.64rem;letter-spacing:.01em;cursor:pointer}.sheet-maker-step-btn{min-height:24px;padding:0;position:relative;border-radius:3px;border:1px solid rgba(123,136,156,.34);background:#12171ef5;box-shadow:none}.sheet-maker-step-btn.active{border-color:#aaf47cc2;background:#86dd55f2;box-shadow:none}.sheet-maker-step-btn.current{outline:1px solid rgba(224,232,243,.84);outline-offset:-1px}.sheet-maker-step-btn.selected{outline:1px solid rgba(107,190,255,.88);outline-offset:-1px}.sheet-maker-step-btn.active.selected{outline-color:#f5fafff0}.sheet-maker-step-spacer{min-height:24px;pointer-events:none}.sheet-maker-head.bar-start:before,.sheet-maker-step-btn.bar-start:before{content:"";position:absolute;left:-1px;top:0;bottom:0;width:2px;background:#d3deed5c;z-index:3;pointer-events:none}.sheet-notation-wrap{position:relative;margin-top:4px;width:max-content;min-width:100%;box-sizing:border-box;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36);background:#070c1880;padding:4px 10px 2px;overflow:hidden}.sheet-notation-vexflow{display:block}.sheet-notation-vexflow svg{display:block;min-width:100%}.sheet-notation-debug-layer{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:2}.sheet-notation-debug-point{position:absolute;top:0;right:0;bottom:0;left:0}.sheet-notation-debug-line{position:absolute;top:8px;bottom:8px;width:1px;transform:translate(-50%)}.sheet-notation-debug-line.target-grid{background:#54acff29}.sheet-notation-debug-line.target-note{background:#54acffb8}.sheet-notation-debug-line.actual{background:#ff6c6cd1}.sheet-notation-debug-delta{position:absolute;top:4px;transform:translate(-50%);font-family:JetBrains Mono,monospace;font-size:.63rem;line-height:1;color:#ff9898f5;text-shadow:0 1px 2px rgba(0,0,0,.62)}.sheet-notation-playhead{position:absolute;top:20px;bottom:10px;width:2px;border-radius:2px;background:#f5cd84eb;box-shadow:0 0 0 1px #f5cd8438;transform:translate(-50%);pointer-events:none}.sheet-notation-playhead-handle{position:absolute;top:12px;bottom:6px;width:16px;transform:translate(-50%);cursor:ew-resize;z-index:3}.sheet-toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);z-index:70;pointer-events:none;border-radius:10px;border:1px solid rgba(144,170,206,.5);background:#0c1421eb;color:#ecf6fff5;box-shadow:0 10px 24px #01050d80;padding:8px 12px;font-size:.78rem;letter-spacing:.01em}.manual-panel{margin-top:12px;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.32);background:#080e1b99;padding:12px}.manual-panel h3{margin:0 0 10px;font-size:.95rem}.manual-grid{margin-top:9px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px}.fretboard-wrap{margin-top:10px;overflow-x:auto;border-radius:var(--radius-md);border:1px solid rgba(157,180,214,.36)}.fretboard{width:100%;min-width:860px;border-collapse:collapse;background:linear-gradient(180deg,#4d311ef0,#664329f0),repeating-linear-gradient(90deg,#ffffff0a 0,#ffffff0a 44px,#0000000d 44px,#0000000d 48px)}.fretboard th,.fretboard td{width:50px;height:34px;text-align:center;border:1px solid rgba(239,205,150,.33);padding:4px}.fretboard thead th{background:#0a101eeb;color:#f7eaceeb;font-family:JetBrains Mono,monospace;font-size:.72rem}.string-label{min-width:74px;white-space:nowrap;font-weight:700;background-color:#0c1221e6;color:#f7eaceeb}.open-fret-cell{background:#0a101eeb}.fretboard tbody td{position:relative;background-image:linear-gradient(to bottom,transparent calc(50% - 4px),rgba(6,9,17,.2) calc(50% - 2px),rgba(6,9,17,.1) calc(50% - 1px),transparent 50%),linear-gradient(to bottom,transparent calc(50% - 1px),rgba(235,240,247,.55) calc(50% - 1px),rgba(182,193,208,.88) 50%,rgba(126,139,157,.76) calc(50% + 1px),transparent calc(50% + 2px)),linear-gradient(to bottom,transparent calc(50% + 1px),rgba(7,11,19,.22) calc(50% + 2px),rgba(7,11,19,.14) calc(50% + 3px),transparent calc(50% + 5px));background-repeat:no-repeat}.barre-mark{position:absolute;left:50%;transform:translate(-50%);width:16px;background:linear-gradient(180deg,#f6cc7ff5,#dca954f0);border:1px solid rgba(255,232,188,.62);box-shadow:inset 0 1px #ffffff57,0 2px 8px #05091266;pointer-events:none;z-index:1}.barre-start{top:3px;bottom:-2px;border-radius:10px 10px 5px 5px}.barre-middle{top:-2px;bottom:-2px;border-radius:5px}.barre-end{top:-2px;bottom:3px;border-radius:5px 5px 10px 10px}.barre-draft{opacity:.48}.fretboard tbody td.open-fret-cell,.fretboard tbody td.string-label{background-image:none}.note-dot{position:relative;z-index:2;width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-size:.82rem;font-weight:800;color:transparent;text-shadow:0 1px 1px rgba(0,0,0,.34)}.note-dot.open{width:auto;min-width:28px;height:auto;padding:2px 6px;border-radius:6px;background:transparent;color:#fff7e2fa;font-family:JetBrains Mono,monospace;font-size:.78rem}.note-dot.active{color:#fff;background:linear-gradient(180deg,#5a86ff,#2f5fe9);box-shadow:inset 0 1px #ffffff70,0 4px 12px #050a1885}.note-dot.root{background:linear-gradient(180deg,#ffd54a,#ff8e1f);color:#09101b;box-shadow:inset 0 1px #ffffff8a,0 4px 12px #0a0c127a}.note-dot.mute{width:auto;min-width:16px;height:auto;padding:0;border-radius:0;background:transparent;color:#ff6b6b;font-family:JetBrains Mono,monospace;font-size:1.08rem;font-weight:700;line-height:1}.fretboard tbody tr.string-muted td.muted-string-cell:not(.open-fret-cell):not(.string-label){background-image:linear-gradient(to bottom,transparent calc(50% - 4px),rgba(6,9,17,.1) calc(50% - 2px),rgba(6,9,17,.05) calc(50% - 1px),transparent 50%),linear-gradient(to bottom,transparent calc(50% - 1px),rgba(235,240,247,.26) calc(50% - 1px),rgba(182,193,208,.4) 50%,rgba(126,139,157,.32) calc(50% + 1px),transparent calc(50% + 2px)),linear-gradient(to bottom,transparent calc(50% + 1px),rgba(7,11,19,.1) calc(50% + 2px),rgba(7,11,19,.06) calc(50% + 3px),transparent calc(50% + 5px))}.note-dot.practice-current{background:#fff;color:#0b1220;box-shadow:0 0 0 3px #ffffff80}.editable-cell{cursor:cell}.editable-cell:hover{outline:1px dashed rgba(248,224,174,.8);outline-offset:-2px;background:#ffffff14}@keyframes panel-enter{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes metronome-blink{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}@media (max-width: 1100px){.hero-top-row{grid-template-columns:1fr;row-gap:8px}.practice-mode-bar{max-width:380px}.studio-grid{grid-template-columns:1fr}.control-stack{position:static}.menu-bar{grid-template-columns:repeat(2,minmax(0,1fr))}.screen{min-height:0}}@media (max-width: 860px){.app-shell{padding:14px 10px 24px}.hero{padding:0}.hero-top-row{grid-template-columns:1fr;gap:8px}.hero-title-row{align-items:flex-start;flex-wrap:wrap;gap:6px}.metro-bar,.metro-beat-row{grid-template-columns:1fr}.screen-head{padding:14px;flex-direction:column;align-items:start}.screen-head p{text-align:left}.screen-body{padding:0}.card{padding:12px}.filter-row,.position-row,.practice-controls{grid-template-columns:1fr;row-gap:6px}.sheet-builder-form,.sheet-editor-meta-row{grid-template-columns:repeat(2,minmax(0,1fr))}.sheet-status-row{flex-wrap:wrap}.sheet-score-paper{width:100%;padding:18px 16px 20px}}@media (max-width: 620px){.menu-bar{grid-template-columns:1fr}.menu-btn{min-height:60px}.title{line-height:1.08}.sheet-builder-form,.sheet-editor-meta-row{grid-template-columns:1fr}.sheet-track-toggle{margin-left:0}.sheet-score-mode-meta{white-space:normal;line-height:1.3}.sheet-score-paper{padding:14px 10px 16px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:1ms!important;animation-iteration-count:1!important;transition-duration:1ms!important}}