:root{--bg:#12141b;--bg-panel:#1a1e29;--bg-panel-2:#212634;--border:#2c3345;--text:#dbe2ee;--text-dim:#8b94a7;--accent:#2dd4bf;--accent-dim:#2dd4bf29;--danger:#f4485d;--c-perfect:#2dd4bf;--c-great:#8bd450;--c-good:#f6c945;--c-miss:#f4485d}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;overflow:hidden}#app{flex-direction:column;height:100vh;display:flex}#topbar{background:var(--bg-panel);border-bottom:1px solid var(--border);align-items:center;gap:18px;padding:10px 18px;display:flex}.brand{letter-spacing:.5px;font-size:18px}.song-title{text-align:center;color:var(--text-dim);white-space:nowrap;text-overflow:ellipsis;flex:1;font-weight:600;overflow:hidden}.midi-status{color:var(--text-dim);align-items:center;gap:7px;font-size:12.5px;display:flex}.midi-status .dot{background:#888;border-radius:50%;width:9px;height:9px}.midi-status.connected .dot{background:var(--accent);box-shadow:0 0 6px var(--accent)}.midi-status.unavailable .dot{background:var(--danger)}#layout{flex:1;min-height:0;display:flex}#sidebar{background:var(--bg-panel);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:12px;width:265px;padding:12px;display:flex;overflow-y:auto}.panel h2{text-transform:uppercase;letter-spacing:1.2px;color:var(--text-dim);margin:0 0 8px;font-size:11.5px}details.panel{border:1px solid var(--border);background:#ffffff04;border-radius:10px;padding:8px 10px}details.panel summary{cursor:pointer;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-dim);-webkit-user-select:none;user-select:none;align-items:center;gap:6px;font-size:11.5px;list-style:none;display:flex}details.panel summary::-webkit-details-marker{display:none}details.panel summary:before{content:"▸";font-size:10px;transition:transform .12s}details.panel[open] summary:before{transform:rotate(90deg)}details.panel[open] summary{margin-bottom:8px}details.panel summary:hover{color:var(--text)}.row-inline{align-items:center;gap:8px;display:flex}.row-inline input[type=range]{flex:1}.row small{color:var(--text-dim);font-weight:400}.muted-note{color:var(--text-dim);font-size:12px}.mixer-row{grid-template-columns:86px 1fr 34px;align-items:center;gap:7px;margin-bottom:7px;font-size:12px;display:grid}.mixer-row .stem-name{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.mixer-row.drums .stem-name{color:var(--c-good)}.mixer-row input[type=range]{width:100%;accent-color:var(--accent)}.mixer-row .stem-val{text-align:right;color:var(--text-dim);font-variant-numeric:tabular-nums}.mixer-hint{color:var(--text-dim);margin-top:2px;font-size:11px}#song-list{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}#song-list li{cursor:pointer;border:1px solid #0000;border-radius:7px;justify-content:space-between;align-items:baseline;gap:8px;padding:5px 8px;font-size:12.5px;display:flex}#song-list li span:first-child{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}#song-list li.divider{cursor:default;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);border:none;padding:6px 8px 2px;font-size:10.5px}#song-list li.divider:hover{background:0 0}#song-list li .bpm{color:var(--text-dim);font-size:12px}#song-list li:hover{background:var(--bg-panel-2)}#song-list li.active{background:var(--accent-dim);border-color:var(--accent)}.import-btn{border:1px dashed var(--border);cursor:pointer;color:var(--text);border-radius:8px;margin-bottom:6px;padding:9px 10px;font-size:13px;display:block}.import-btn:hover{border-color:var(--accent);background:var(--accent-dim)}.tag{color:var(--c-good);vertical-align:middle;background:#4c3a12;border-radius:4px;padding:1px 5px;font-size:10px}.import-status{color:var(--text-dim);white-space:pre-wrap;min-height:16px;font-size:12px}.pdf-bpm{color:var(--text-dim);justify-content:space-between;align-items:center;margin:-2px 0 8px;font-size:12px;flex-direction:row!important}.pdf-bpm input{background:var(--bg-panel-2);width:64px;color:var(--text);border:1px solid var(--border);font:inherit;border-radius:6px;padding:4px 6px}.import-status.error{color:var(--danger)}.row{flex-direction:column;gap:4px;margin-bottom:10px;font-size:13px;display:flex}.row.check{flex-direction:row;align-items:center;gap:8px}.row select,.row input[type=range]{width:100%;accent-color:var(--accent)}.row select{background:var(--bg-panel-2);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px}#stage{background:var(--bg);flex:1;min-width:0;position:relative}#game-canvas{display:block;position:absolute;inset:0}#hud{border:1px solid var(--border);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#141721bf;border-radius:10px;gap:18px;padding:8px 16px;display:flex;position:absolute;top:12px;right:16px}.hud-item{flex-direction:column;align-items:center;min-width:52px;display:flex}.hud-label{text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);font-size:10px}.hud-item span:last-child{font-variant-numeric:tabular-nums;font-size:19px;font-weight:700}#transport{background:var(--bg-panel);border-top:1px solid var(--border);align-items:center;gap:10px;padding:10px 18px;display:flex}.spacer{flex:1}.kbd-hint{color:var(--text-dim);font-size:11.5px}.audio-warning{color:var(--c-good);background:#f6c9451a;border:1px solid #f6c94566;border-radius:8px;padding:6px 12px;font-size:12.5px}.audio-warning.hidden{display:none}.kbd-hint b{color:var(--text)}.primary-btn,.ghost-btn{font:inherit;cursor:pointer;border:1px solid #0000;border-radius:8px;padding:8px 18px}.primary-btn{background:var(--accent);color:#06251f;border:none;font-weight:700}.primary-btn:hover{filter:brightness(1.1)}.primary-btn:disabled{opacity:.4;cursor:default}.ghost-btn{color:var(--text);border-color:var(--border);background:0 0}.record-btn{background:var(--danger);color:#fff;width:100%;margin:6px 0}.record-btn.recording{animation:1.4s ease-in-out infinite rec-pulse}.backing-controls.hidden,#rec-backing-note.hidden{display:none}.backing-controls .row{margin-bottom:8px}.backing-audition,.backing-forget{flex:none;padding:3px 8px;font-size:12px;line-height:1.4}#backing-offset{min-width:56px;font:inherit;text-align:right;background:var(--bg-panel-2);color:var(--text);border:1px solid var(--border);border-radius:7px;flex:1;padding:4px 6px;font-size:13px}#rec-backing-note{color:#7dd3fc}@keyframes rec-pulse{0%,to{box-shadow:0 0 #f4485d8c}50%{box-shadow:0 0 0 7px #f4485d00}}#rec-summary{margin:4px 0 10px;font-size:13.5px}#rec-title{width:170px}.ghost-btn:hover{border-color:var(--accent)}.overlay{z-index:50;background:#080a0fb8;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.overlay.hidden{display:none}.overlay-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:14px;width:min(430px,92vw);max-height:88vh;padding:26px 30px;overflow-y:auto}.overlay-card h2{margin:0 0 12px}.muted{color:var(--text-dim);font-size:13px}.results-acc{text-align:center;margin:10px 0 18px}.results-acc span:first-child{color:var(--accent);font-size:46px;font-weight:800}.acc-sub{text-transform:uppercase;letter-spacing:1.5px;color:var(--text-dim);font-size:12px;display:block}.results-grid{text-align:center;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px;display:grid}.results-grid b{font-size:21px;display:block}.results-grid span{color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;font-size:11px}.c-perfect{color:var(--c-perfect)}.c-great{color:var(--c-great)}.c-good{color:var(--c-good)}.c-miss{color:var(--c-miss)}.results-row{border-top:1px solid var(--border);justify-content:space-between;padding:6px 0;font-size:14px;display:flex}.overlay-actions{justify-content:flex-end;gap:10px;margin-top:18px;display:flex}.history-row{border-radius:7px;flex-direction:column;gap:1px;padding:5px 6px;font-size:12px;display:flex}.history-row:nth-child(odd){background:#ffffff06}.history-row .h-title{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.history-row .h-meta{color:var(--text-dim);font-variant-numeric:tabular-nums;justify-content:space-between;gap:8px;font-size:11px;display:flex}.history-row .h-acc{color:var(--accent);font-weight:700}.history-total{color:var(--text-dim);margin-top:6px;font-size:11px}.results-history{border-top:1px solid var(--border);color:var(--text-dim);margin-top:12px;padding-top:10px;font-size:12.5px}.results-history .rh-best{color:var(--text);margin-bottom:6px}.results-history .rh-best b{color:var(--accent)}.results-history .rh-run{font-variant-numeric:tabular-nums;justify-content:space-between;gap:10px;padding:1px 0;display:flex}.results-history .rh-new-best{color:var(--c-good);font-weight:700}.lib-badge.best{color:#7ee2d2;background:#2dd4bf38}.library-btn{width:100%;padding:10px;font-size:14px}.library-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:14px;flex-direction:column;width:min(1180px,96vw);height:92vh;padding:18px 22px;display:flex}.library-header{align-items:center;gap:14px;margin-bottom:12px;display:flex}.library-header h2{flex:none;margin:0}.library-header .muted{flex:1}.library-filters{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;display:flex}.library-filters input,.library-filters select{background:var(--bg-panel-2);color:var(--text);border:1px solid var(--border);font:inherit;border-radius:8px;padding:7px 10px;font-size:13px}.library-filters #lib-search{flex:1;min-width:180px}.library-filters input[type=number]{width:76px}.lib-fav-toggle{color:var(--text-dim);cursor:pointer;align-items:center;gap:5px;font-size:13px;display:flex}.library-grid{flex:1;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));align-content:start;gap:14px;padding-right:4px;display:grid;overflow-y:auto}.lib-card{cursor:pointer;border:1px solid #0000;border-radius:10px;padding:6px}.lib-card:hover{background:var(--bg-panel-2);border-color:var(--accent)}.lib-card.loading{opacity:.5;pointer-events:none}.lib-card.error{border-color:var(--danger)}.lib-art{aspect-ratio:1;background:linear-gradient(140deg,#232a3d,#16305c);border-radius:8px;justify-content:center;align-items:center;font-size:44px;display:flex;position:relative;overflow:hidden}.lib-art img{object-fit:cover;width:100%;height:100%}.lib-fav{color:#fff;cursor:pointer;background:#0a0c12a6;border:none;border-radius:50%;width:28px;height:28px;font-size:15px;position:absolute;top:6px;right:6px}.lib-fav.active{color:#ff5d7d}.lib-badges{flex-wrap:wrap;gap:4px;display:flex;position:absolute;bottom:6px;left:6px;right:6px}.lib-badge{color:var(--text);background:#0a0c12bf;border-radius:5px;padding:2px 6px;font-size:10.5px}.lib-badge.diff-easy{color:var(--c-great)}.lib-badge.diff-med{color:var(--c-good)}.lib-badge.diff-hard{color:var(--c-miss)}.lib-name{white-space:nowrap;text-overflow:ellipsis;margin-top:7px;font-size:13px;font-weight:600;overflow:hidden}.lib-artist{color:var(--text-dim);white-space:nowrap;text-overflow:ellipsis;font-size:11.5px;overflow:hidden}.lib-empty{text-align:center;color:var(--text-dim);grid-column:1/-1;padding:60px 20px;font-size:14px}.lib-pick{flex-direction:column;align-items:center;gap:14px;max-width:460px;margin:0 auto;line-height:1.5;display:flex}.lib-pick-note{opacity:.8;font-size:12.5px}.lib-pick-row{flex-wrap:wrap;grid-column:1/-1;align-items:center;gap:10px;padding-bottom:2px;display:flex}.lib-pick-label{min-width:0;color:var(--text-dim);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:12.5px;overflow:hidden}.btn-row{gap:8px;display:flex}.btn-row .ghost-btn{flex:1;padding:8px 6px;font-size:13px}.kit-card{width:min(560px,94vw)}#kit-packs{border-bottom:1px solid var(--border);align-items:center;gap:8px;margin-bottom:8px;padding:2px 0 10px;font-size:13px;display:flex}#kit-packs .kit-lane{color:var(--text-dim);white-space:nowrap}.kit-row{grid-template-columns:12px 82px 1fr auto auto auto;align-items:center;gap:8px;padding:5px 0;font-size:13px;display:grid}.kit-row .swatch{border-radius:3px;width:11px;height:11px}.kit-row .kit-lane{white-space:nowrap;text-overflow:ellipsis;color:var(--text);overflow:hidden}.kit-row select{background:var(--bg-panel-2);width:100%;color:var(--text);border:1px solid var(--border);font:inherit;border-radius:7px;padding:6px 8px;font-size:12.5px}.kit-row .kit-icon-btn{background:var(--bg-panel-2);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:7px;width:32px;height:30px;font-size:12px}.kit-row .kit-icon-btn:hover{border-color:var(--accent)}.kit-row .kit-import{border:1px dashed var(--border);cursor:pointer;white-space:nowrap;border-radius:7px;padding:6px 9px;font-size:12px}.kit-row .kit-import:hover{border-color:var(--accent)}.kit-row .kit-remove{color:var(--danger);border-color:#0000}.kit-row .kit-remove.hidden{visibility:hidden}#loop-controls{align-items:center;gap:6px;display:inline-flex}#loop-controls .ghost-btn{min-width:34px}#loop-controls .loop-set{border-color:var(--accent);color:var(--accent)}.loop-label{color:var(--accent);white-space:nowrap;font-size:12px}.loop-label.hidden,#loop-controls .hidden{display:none}.calib-live{background:var(--bg-panel-2);border:1px solid var(--border);border-radius:8px;min-height:20px;margin:10px 0;padding:12px;font-size:13px}.calib-row{align-items:center;gap:10px;font-size:13px;display:flex}.calib-offset{color:var(--text-dim);align-items:center;gap:6px;display:flex}.calib-offset input{background:var(--bg-panel-2);width:64px;color:var(--text);border:1px solid var(--border);font:inherit;border-radius:7px;padding:6px 8px}#map-lanes{grid-template-columns:repeat(3,1fr);gap:6px;margin:14px 0;display:grid}#map-lanes button{font:inherit;background:var(--bg-panel-2);color:var(--text);border:1px solid var(--border);cursor:pointer;border-radius:8px;padding:8px 6px;font-size:12.5px}#map-lanes button.selected{border-color:var(--accent);background:var(--accent-dim)}.map-last{color:var(--text-dim);text-align:center;font-size:12.5px}.sync-row{align-items:center;gap:5px;margin:10px 0 8px;display:flex}.sync-row input[type=number]{min-width:56px;font:inherit;text-align:right;background:var(--bg-panel-2);color:var(--text);border:1px solid var(--border);border-radius:7px;flex:1;padding:5px 6px;font-size:13px}.sync-unit{color:var(--text-dim);font-size:11.5px}.sync-nudge{white-space:nowrap;padding:5px 7px;font-size:12px}.song-save{color:var(--text-dim);cursor:pointer;background:0 0;border:none;flex:none;padding:0 2px;font-size:13px;line-height:1}.song-save:hover{color:var(--text)}.song-save.saved{color:var(--accent)}.lib-section-title{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);grid-column:1/-1;margin:4px 2px -2px;font-size:12px;font-weight:700}.lib-del{font-size:13px}.lib-del:hover{color:var(--danger,#ff5d7d)}#song-list li span:first-child{flex:1}