:root{--bg-app:#080c14;--bg-surface:#0f172a;--bg-surface-elevated:#1e293b;--bg-editor:#090e17;--bg-gutter:#0c121e;--bg-hover:#1e293b;--bg-active:#334155;--bg-card:#131d31;--border-subtle:#1e293b;--border-default:#334155;--border-focus:#38bdf8;--border-active:#60a5fa;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--text-dim:#475569;--accent-cyan:#06b6d4;--accent-cyan-glow:#06b6d426;--accent-blue:#3b82f6;--accent-purple:#a855f7;--accent-purple-glow:#a855f726;--accent-amber:#f59e0b;--accent-emerald:#10b981;--accent-emerald-glow:#10b98126;--accent-crimson:#ef4444;--accent-crimson-glow:#ef444426;--font-mono:"JetBrains Mono", "Fira Code", "Cascadia Code", Menlo, Monaco, Consolas, monospace;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0006, 0 2px 4px -2px #0006;--shadow-lg:0 10px 15px -3px #00000080, 0 4px 6px -4px #00000080;--shadow-glow:0 0 20px #38bdf826}*{box-sizing:border-box;scrollbar-width:thin;scrollbar-color:#334155 #090e17;margin:0;padding:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#090e17}::-webkit-scrollbar-thumb{background:#334155;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#475569}html,body{background-color:var(--bg-app);width:100%;height:100%;color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-size:14px;line-height:1.5;overflow:hidden}#app{flex-direction:column;width:100%;height:100%;display:flex;overflow:hidden}.lab-app-root{flex-direction:column;width:100%;height:100%;min-height:0;display:flex;overflow:hidden}.lab-navbar{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);z-index:100;flex-shrink:0;justify-content:space-between;align-items:center;height:56px;padding:0 16px;display:flex}.navbar-left{align-items:center;gap:16px;display:flex}.lab-brand{align-items:center;gap:10px;display:flex}.lab-logo-icon{border-radius:var(--radius-md);color:#fff;background:linear-gradient(135deg,#0284c7,#7c3aed);justify-content:center;align-items:center;width:32px;height:32px;font-size:18px;display:flex;box-shadow:0 0 12px #7c3aed66}.lab-brand-text{flex-direction:column;display:flex}.brand-title{letter-spacing:.08em;background:linear-gradient(90deg,#38bdf8,#c084fc);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:14px;font-weight:800}.brand-subtitle{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:10px}.navbar-divider{background:var(--border-default);width:1px;height:24px}.experiment-title-input{border-radius:var(--radius-sm);color:var(--text-primary);background:0 0;border:1px solid #0000;width:320px;padding:4px 8px;font-size:13px;font-weight:500;transition:all .2s}.experiment-title-input:hover{background:var(--bg-hover);border-color:var(--border-subtle)}.experiment-title-input:focus{background:var(--bg-editor);border-color:var(--border-focus);box-shadow:0 0 0 2px var(--accent-cyan-glow);outline:none}.navbar-center{align-items:center;gap:20px;display:flex}.status-indicator{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:9999px;align-items:center;gap:8px;padding:4px 12px;display:flex}.status-dot{border-radius:50%;width:8px;height:8px}.status-ready{background:var(--accent-emerald);box-shadow:0 0 8px var(--accent-emerald)}.status-running{background:var(--accent-amber);box-shadow:0 0 8px var(--accent-amber);animation:1.5s infinite pulse}.status-error{background:var(--accent-crimson);box-shadow:0 0 8px var(--accent-crimson)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.status-text{color:var(--text-secondary);font-size:12px;font-weight:600}.time-clock-display{font-family:var(--font-mono);color:var(--accent-cyan);border-radius:var(--radius-sm);background:#06b6d414;border:1px solid #06b6d433;align-items:center;gap:6px;padding:4px 10px;font-size:12px;display:flex}.navbar-right{align-items:center;gap:8px;display:flex}.btn{border-radius:var(--radius-sm);cursor:pointer;font-size:12px;font-weight:600;font-family:var(--font-sans);border:1px solid #0000;align-items:center;gap:6px;padding:6px 12px;transition:all .15s;display:inline-flex}.btn-primary{color:#fff;background:linear-gradient(135deg,#0284c7,#0369a1);box-shadow:0 1px 3px #0000004d}.btn-primary:hover{background:linear-gradient(135deg,#0369a1,#075985);box-shadow:0 0 10px #38bdf84d}.btn-secondary{background:var(--bg-surface-elevated);border-color:var(--border-default);color:var(--text-secondary)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-active)}.btn-icon-only{background:var(--bg-surface-elevated);border:1px solid var(--border-default);color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;padding:6px 10px}.btn-icon-only:hover{background:var(--bg-hover);color:var(--text-primary)}.dropdown-container{position:relative}.dropdown-menu{background:var(--bg-surface-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:200;width:280px;margin-top:6px;padding:4px;position:absolute;top:100%;right:0}.dropdown-header{color:var(--text-muted);text-transform:uppercase;border-bottom:1px solid var(--border-subtle);margin-bottom:4px;padding:6px 10px;font-size:11px;font-weight:700}.dropdown-item{text-align:left;width:100%;color:var(--text-primary);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:none;padding:8px 10px;font-size:12px;transition:background .1s}.dropdown-item:hover{background:var(--bg-hover);color:var(--accent-cyan)}.lab-main-container{flex:1;min-width:0;min-height:0;display:flex;position:relative;overflow:hidden}.lab-workspace{background:var(--bg-app);scroll-behavior:smooth;flex-direction:column;flex:1;min-width:0;min-height:0;padding:24px;display:flex;overflow:hidden auto}.notebook-cells-list{flex-direction:column;gap:16px;width:100%;max-width:1080px;margin:0 auto;display:flex}.workspace-bottom-actions{justify-content:center;width:100%;max-width:1080px;margin:20px auto 40px;display:flex}.notebook-cell{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s;overflow:hidden}.notebook-cell:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 1px var(--border-focus), var(--shadow-glow)}.cell-running{border-color:var(--accent-amber)}.cell-error{border-color:#ef444466}.cell-input-row{background:var(--bg-editor);align-items:stretch;display:flex;position:relative}.cell-prompt{background:var(--bg-gutter);border-right:1px solid var(--border-subtle);-webkit-user-select:none;user-select:none;flex-direction:column;flex-shrink:0;justify-content:flex-start;align-items:center;gap:6px;width:72px;padding:10px 8px;display:flex}.prompt-label{font-family:var(--font-mono);color:var(--text-muted);font-size:11px;font-weight:600}.cell-run-btn{border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--accent-emerald);cursor:pointer;background:0 0;justify-content:center;align-items:center;width:24px;height:24px;font-size:10px;transition:all .15s;display:flex}.cell-run-btn:hover{border-color:var(--accent-emerald);background:#10b98126}.cell-editor-wrapper{flex:1;min-height:48px;position:relative}.cell-toolbar{background:var(--bg-gutter);border-left:1px solid var(--border-subtle);opacity:.3;flex-direction:column;gap:4px;padding:6px 4px;transition:opacity .15s;display:flex}.notebook-cell:hover .cell-toolbar{opacity:1}.cell-tool-btn{color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;width:20px;height:20px;font-size:11px;display:flex}.cell-tool-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.cell-tool-btn.btn-cell-delete:hover{color:var(--accent-crimson);background:#ef444433}.sci-editor-container{width:100%;height:100%;font-family:var(--font-mono);font-size:13px;line-height:20px;display:flex;position:relative}.sci-editor-gutter{background:var(--bg-gutter);width:58px;color:var(--text-dim);-webkit-user-select:none;user-select:none;border-right:1px solid #ffffff0d;padding:8px 0;font-size:11px;overflow:hidden}.gutter-line{justify-content:flex-end;align-items:center;gap:3px;height:20px;padding:0 4px;line-height:20px;display:flex;position:relative}.gutter-line-num{color:#64748b;text-align:right;min-width:18px;font-size:11px}.gutter-status{text-align:center;width:12px;font-size:10px;display:inline-block}.gutter-status-success{color:#10b981;font-weight:700}.gutter-status-error{color:#ef4444;font-weight:700}.gutter-status-cmd{color:#38bdf8;font-weight:700}.gutter-status-warn{color:#f59e0b;font-weight:700}.gutter-replay-btn{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:2px;padding:0;font-size:11px;line-height:1;display:none}.gutter-line:hover .gutter-replay-btn{color:#38bdf8;display:inline-block}.gutter-line.success-line{background:#10b9810d}.gutter-line.error-line{color:var(--accent-crimson);border-right:2px solid var(--accent-crimson);background:#ef444426;font-weight:700}.sci-editor-body{flex:1;position:relative;overflow:hidden}.sci-editor-syntax-layer,.sci-editor-textarea{width:100%;height:100%;font-family:var(--font-mono);letter-spacing:normal;tab-size:2;white-space:pre;word-wrap:normal;border:none;margin:0;padding:8px 12px;font-size:13px;line-height:20px;position:absolute;top:0;left:0;overflow:auto}.sci-editor-syntax-layer{pointer-events:none;color:var(--text-primary);z-index:1}.sci-editor-textarea{color:#0000;caret-color:#38bdf8;resize:none;z-index:2;background:0 0;outline:none}.tok-comment{color:#64748b;font-style:italic}.tok-object-type{color:#c084fc;text-shadow:0 0 8px #c084fc4d;font-weight:600}.tok-variable{color:#93c5fd}.tok-property{color:#fde047}.tok-function{color:#38bdf8;font-weight:500}.tok-constant{color:#34d399;font-weight:500}.tok-number{color:#fb923c}.tok-string{color:#a3e635}.tok-operator{color:#f43f5e;font-weight:600}.tok-paren{color:#e2e8f0;font-weight:700}.tok-bracket{color:#cbd5e1}.tok-punct{color:#94a3b8}.sci-editor-autocomplete{border-radius:var(--radius-md);max-height:270px;box-shadow:var(--shadow-lg), 0 0 20px #3b82f64d;z-index:9999;background:#0f172a;border:1px solid #3b82f6;animation:80ms acFadeIn;display:flex;overflow:hidden}@keyframes acFadeIn{0%{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:translateY(0)}}.autocomplete-list{flex:1;max-height:260px;padding:4px;overflow-y:auto}.autocomplete-item{border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-mono);align-items:center;gap:8px;padding:6px 8px;font-size:12px;display:flex}.autocomplete-item:hover,.autocomplete-item.selected{color:#fff;background:#1e3a8a}.autocomplete-icon{border-radius:3px;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;font-size:10px;font-weight:700;display:inline-flex}.kind-object{color:#fff;background:#7e22ce}.kind-property{color:#fff;background:#d97706}.kind-function{color:#fff;background:#0284c7}.kind-constant{color:#fff;background:#059669}.kind-variable{color:#fff;background:#2563eb}.kind-default{color:#fff;background:#475569}.autocomplete-label{color:#f8fafc;font-weight:600}.autocomplete-detail{color:#94a3b8;margin-left:auto;font-size:11px}.autocomplete-docs{border-left:1px solid var(--border-default);background:var(--bg-surface);width:200px;color:var(--text-secondary);padding:8px 10px;font-size:11px;overflow-y:auto}.docs-header{color:var(--accent-cyan);font-weight:700;font-family:var(--font-mono);margin-bottom:4px}.docs-detail{color:var(--text-muted);font-size:10px;display:block}.docs-body{line-height:1.4}.cell-output-row{background:var(--bg-surface);border-top:1px solid var(--border-subtle);display:flex}.cell-prompt.out-prompt{background:var(--bg-surface)}.cell-prompt.out-prompt .prompt-label{color:var(--accent-crimson)}.cell-output-wrapper{font-family:var(--font-mono);flex:1;padding:12px 16px;font-size:13px;overflow-x:auto}.out-empty{color:var(--text-dim);font-size:12px;font-style:italic}.out-scalar-container{background:var(--bg-card);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);align-items:center;gap:10px;padding:6px 12px;display:inline-flex}.out-scalar-badge{text-transform:uppercase;color:var(--accent-amber);background:#f59e0b1a;border-radius:3px;padding:2px 6px;font-size:10px;font-weight:700}.out-scalar-value{color:#fff;font-size:14px;font-weight:700}.out-vector-card{background:var(--bg-card);border-radius:var(--radius-md);border:1px solid #06b6d44d;flex-direction:column;gap:6px;padding:8px 14px;display:inline-flex;box-shadow:0 2px 8px #06b6d41a}.vector-header{align-items:center;gap:8px;display:flex}.vector-badge{text-transform:uppercase;color:var(--accent-cyan);background:#06b6d426;border-radius:3px;padding:2px 6px;font-size:10px;font-weight:800}.vector-coords{color:#f8fafc;font-size:14px;font-weight:700}.vector-metrics{color:var(--text-secondary);gap:12px;font-size:11px;display:flex}.out-object-card{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-md);max-width:680px;padding:12px}.object-card-header{border-bottom:1px solid var(--border-subtle);align-items:center;gap:10px;margin-bottom:10px;padding-bottom:8px;display:flex}.obj-type-badge{color:#c084fc;background:#c084fc26;border-radius:4px;padding:2px 8px;font-size:12px;font-weight:800}.obj-id{color:var(--text-primary);font-size:13px;font-weight:600}.obj-category-pill{text-transform:uppercase;color:var(--text-muted);border:1px solid var(--border-subtle);border-radius:9999px;margin-left:auto;padding:1px 6px;font-size:10px}.object-props-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;display:grid}.prop-row{background:var(--bg-surface);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);flex-direction:column;padding:6px 8px;display:flex}.prop-name{color:var(--text-muted);font-size:11px}.prop-val{color:var(--text-primary);font-size:12px;font-weight:600}.prop-unit{color:var(--accent-cyan);font-size:10px}.prop-tag.derived{color:var(--accent-purple);background:#a855f71a;border-radius:2px;padding:1px 4px;font-size:9px}.out-error-card{border:1px solid var(--accent-crimson);border-radius:var(--radius-md);color:#fca5a5;background:#ef444414;padding:12px 16px}.err-header{align-items:center;gap:8px;margin-bottom:6px;display:flex}.err-code-badge{background:var(--accent-crimson);color:#fff;border-radius:3px;padding:2px 6px;font-size:11px;font-weight:800}.err-title{color:#fff;font-weight:700}.err-message{color:#fecaca;font-size:13px;line-height:1.5}.err-loc{color:#f87171;margin-top:6px;font-size:11px;font-weight:600}.inspector-panel{background:var(--bg-surface);border-left:1px solid var(--border-subtle);z-index:50;flex-direction:column;flex-shrink:0;width:360px;height:100%;min-height:0;display:flex;overflow:hidden}.inspector-header{border-bottom:1px solid var(--border-subtle);flex-direction:column;flex-shrink:0;gap:10px;padding:12px 16px;display:flex}.inspector-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);font-size:12px;font-weight:700}.inspector-tabs{background:var(--bg-editor);border-radius:var(--radius-sm);gap:2px;padding:2px;display:flex}.tab-btn{color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:none;flex:1;padding:5px 0;font-size:11px;font-weight:600;transition:all .15s}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{background:var(--bg-surface-elevated);color:var(--accent-cyan);box-shadow:var(--shadow-sm)}.inspector-body{scroll-behavior:smooth;flex:1;min-height:0;padding:16px;overflow:hidden auto}.btn-copied-success{border-color:var(--accent-emerald)!important;color:var(--accent-emerald)!important;background:#10b98133!important}.inspector-empty{text-align:center;color:var(--text-muted);padding:40px 20px}.empty-icon{opacity:.5;margin-bottom:10px;font-size:28px}.empty-text{margin-bottom:6px;font-size:12px}.empty-hint code{background:var(--bg-editor);color:var(--accent-cyan);font-family:var(--font-mono);border-radius:3px;padding:2px 6px}.objects-list-header-row{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.objects-list-header{color:var(--text-muted);text-transform:uppercase;font-size:11px;font-weight:700}.btn-copy-objects-json{padding:3px 8px;font-size:11px}.insp-object-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;margin-bottom:12px;padding:10px 12px;transition:all .18s}.insp-object-card:hover{border-color:var(--border-focus);transform:translateY(-1px)}.insp-object-card.selected-object-card{background:#f59e0b12;border-color:#f59e0b;box-shadow:0 0 12px #f59e0b40}.insp-selected-badge{font-family:var(--font-mono);color:#fef08a;letter-spacing:.05em;background:#f59e0b4d;border:1px solid #f59e0b99;border-radius:3px;padding:1px 5px;font-size:9px;font-weight:800}.insp-phys-divider{background:var(--border-subtle);height:1px;margin:8px 0 6px}.insp-phys-section-title{text-transform:uppercase;color:#38bdf8;letter-spacing:.04em;margin-bottom:4px;font-size:10px;font-weight:700}.insp-card-title{border-bottom:1px solid var(--border-subtle);align-items:center;gap:8px;margin-bottom:8px;padding-bottom:6px;display:flex}.insp-type-badge{color:#c084fc;font-size:11px;font-weight:700}.insp-obj-id{color:var(--text-primary);font-size:12px;font-weight:600}.insp-category-badge{text-transform:uppercase;color:var(--text-muted);margin-left:auto;font-size:9px}.insp-prop-row{font-size:11px;font-family:var(--font-mono);justify-content:space-between;padding:2px 0;display:flex}.insp-prop-key{color:var(--text-muted)}.insp-prop-val{color:var(--text-primary);font-weight:500}.variables-table{border-collapse:collapse;width:100%;font-size:11px;font-family:var(--font-mono)}.variables-table th{text-align:left;color:var(--text-muted);border-bottom:1px solid var(--border-default);padding:6px 8px;font-weight:600}.variables-table td{border-bottom:1px solid var(--border-subtle);padding:6px 8px}.var-name code{color:var(--accent-cyan);font-weight:600}.var-dim code{color:#34d399;font-size:10px}.type-pill{background:var(--bg-editor);color:var(--accent-purple);border-radius:3px;padding:2px 6px;font-size:10px}.diag-group{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);margin-bottom:14px;padding:12px}.diag-group-title{text-transform:uppercase;color:var(--text-secondary);border-bottom:1px solid var(--border-subtle);margin-bottom:8px;padding-bottom:4px;font-size:11px;font-weight:700}.diag-stat{font-size:12px;font-family:var(--font-mono);justify-content:space-between;padding:3px 0;display:flex}.diag-label{color:var(--text-muted)}.diag-val{color:var(--text-primary);font-weight:600}.diag-val.highlight{color:var(--accent-cyan)}.diag-val.energy-total{color:var(--accent-emerald)}.library-search-input{background:var(--bg-editor);border:1px solid var(--border-default);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);outline:none;margin-bottom:12px;padding:6px 10px;font-size:12px}.library-search-input:focus{border-color:var(--border-focus)}.lib-section-title{text-transform:uppercase;color:var(--text-muted);margin:14px 0 6px;font-size:11px;font-weight:700}.lib-item{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);cursor:pointer;margin-bottom:6px;padding:8px 10px;transition:all .15s}.lib-item:hover{border-color:var(--border-focus);background:var(--bg-surface-hover);transform:translate(2px)}.lib-item-copied{background:#34d39926!important;border-color:#34d399!important}.lib-item-header{align-items:center;gap:8px;margin-bottom:4px;display:flex}.lib-badge{font-family:var(--font-mono);border-radius:3px;padding:2px 6px;font-size:11px;font-weight:700}.lib-badge.type{color:#c084fc;background:#c084fc33}.lib-badge.constant{color:#34d399;background:#34d39933}.lib-badge.function{color:#38bdf8;background:#38bdf833}.lib-cat,.lib-val{color:var(--text-muted);margin-left:auto;font-size:10px}.lib-doc{color:var(--text-secondary);font-size:11px;line-height:1.3}#viewport-mount{width:100%;max-width:1080px;margin:0 auto 20px}.physics-viewport-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-md);flex-direction:column;display:flex;overflow:hidden}.viewport-header{background:var(--bg-surface-elevated);border-bottom:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;height:48px;padding:0 14px;display:flex}.viewport-title-group{align-items:center;gap:8px;display:flex}.viewport-icon{color:#38bdf8;font-size:16px}.viewport-title{font-family:var(--font-mono);letter-spacing:.06em;color:var(--text-primary);font-size:12px;font-weight:800}.viewport-status-badge{font-family:var(--font-mono);letter-spacing:.04em;border-radius:3px;padding:2px 6px;font-size:10px;font-weight:700}.status-ready{color:#34d399;background:#10b98126;border:1px solid #10b9814d}.status-simulating{color:#38bdf8;background:#38bdf826;border:1px solid #38bdf84d;animation:1.5s infinite alternate pulse-glow}.status-paused{color:#fbbf24;background:#f59e0b26;border:1px solid #f59e0b4d}.status-colliding{color:#f87171;background:#ef444440;border:1px solid #ef444480;animation:.5s infinite alternate collision-flash}@keyframes collision-flash{0%{box-shadow:0 0 4px #ef44444d}to{box-shadow:0 0 12px #ef4444cc}}.viewport-controls-group{align-items:center;gap:6px;display:flex}.btn-ctrl{font-size:12px;font-weight:600;font-family:var(--font-mono);background:var(--bg-card);border:1px solid var(--border-default);color:var(--text-primary);border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:4px;padding:4px 10px;transition:all .15s;display:flex}.btn-ctrl:hover{background:var(--bg-hover);border-color:var(--border-active)}.btn-play{background:linear-gradient(135deg,#0284c7,#0369a1);border-color:#38bdf8}.btn-play:hover{background:linear-gradient(135deg,#0369a1,#075985);box-shadow:0 0 8px #38bdf84d}.viewport-divider{background:var(--border-subtle);width:1px;height:20px;margin:0 4px}.speed-selector{background:var(--bg-card);border:1px solid 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.15s}.overlay-toggle:hover{color:var(--text-secondary);border-color:var(--border-default)}.overlay-toggle.active{color:#38bdf8;background:#38bdf81f;border-color:#0284c7}.viewport-body{background:#fff;flex:1;width:100%;height:100%;position:relative;overflow:hidden}.physics-canvas{cursor:grab;background:#fff;width:100%;height:100%;display:block}.viewport-hud-strip{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#f8fafc;font-family:var(--font-mono);pointer-events:none;z-index:10;background:#0f172ad9;border:1px solid #ffffff1a;border-radius:6px;align-items:center;gap:12px;padding:4px 12px;font-size:11px;display:flex;position:absolute;bottom:8px;left:12px;box-shadow:0 4px 12px #00000026}.hud-item{white-space:nowrap;align-items:center;gap:6px;display:flex}.hud-label{color:var(--text-dim);letter-spacing:.05em;font-size:9px;font-weight:700}.hud-val{color:#e2e8f0;font-size:11px;font-weight:600}.hud-state-val{color:#34d399;font-weight:800}.hud-state-val.state-simulating{color:#38bdf8}.hud-state-val.state-colliding{color:#f87171;text-shadow:0 0 8px #ef444499;font-weight:900}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#04060bbf;justify-content:center;align-items:center;width:100vw;height:100vh;padding:20px;display:flex;position:fixed;top:0;left:0}.modal-dialog{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);flex-direction:column;width:100%;max-width:620px;max-height:80vh;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:16px 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p{margin-bottom:8px;font-size:14px}.empty-catalog-msg small{color:var(--text-muted)}.hover-panel{z-index:1000;border-radius:var(--radius-md);width:280px;box-shadow:var(--shadow-lg), 0 0 20px #3b82f633;pointer-events:auto;font-family:var(--font-sans);background:#0a1628;border:1px solid #3b82f6;padding:0;font-size:12px;animation:.12s hoverFadeIn;position:fixed;overflow:hidden}@keyframes hoverFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.hover-header{background:#ffffff08;border-bottom:1px solid #ffffff0f;align-items:center;gap:6px;padding:7px 10px 6px;display:flex}.hover-kind-badge{text-transform:uppercase;font-size:9px;font-weight:800;font-family:var(--font-mono);border-radius:3px;flex-shrink:0;padding:2px 5px}.hover-kind-constant .hover-kind-badge{color:#34d399;background:#065f46}.hover-kind-function .hover-kind-badge{color:#38bdf8;background:#1e3a5f}.hover-kind-object .hover-kind-badge{color:#c084fc;background:#3b1564}.hover-kind-property 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5px;font-size:10px}.sig-help{font-family:var(--font-mono);z-index:10;white-space:nowrap;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172aeb;border-top:1px solid #3b82f64d;align-items:center;gap:4px;padding:3px 10px 3px 12px;font-size:12px;animation:.1s sigFadeIn;display:flex;position:absolute;bottom:0;left:40px;right:0;overflow:hidden}@keyframes sigFadeIn{0%{opacity:0}to{opacity:1}}.sig-fn-name{color:#38bdf8;font-weight:700}.sig-paren{color:#e2e8f0;font-weight:700}.sig-param{color:#94a3b8}.sig-param-active{color:#f8fafc;text-underline-offset:2px;font-weight:700;-webkit-text-decoration:underline #38bdf8;text-decoration:underline #38bdf8}.sig-comma{color:#64748b}.sig-desc{color:#475569;font-size:10px;font-family:var(--font-sans);text-overflow:ellipsis;margin-left:12px;overflow:hidden}.sig-active-name{color:#fbbf24}.gutter-line.warn-line{color:#f59e0b;background:#f59e0b1a;border-right:2px solid #f59e0b;font-weight:700}.gutter-marker-error{background:var(--accent-crimson);color:#fff;width:14px;height:14px;font-size:9px;font-weight:900;font-family:var(--font-sans);border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.gutter-marker-warn{color:#f59e0b;font-size:11px;line-height:1;display:inline-block}.desktop-menu-bar{align-items:center;gap:2px;display:flex}.menu-item-dropdown{position:relative}.btn-menu-trigger{color:var(--text-secondary);font-family:var(--font-sans);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:1px solid #0000;padding:5px 10px;font-size:12px;font-weight:500;transition:all .15s}.btn-menu-trigger:hover,.btn-menu-trigger.menu-active{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-subtle)}.dropdown-menu{border-radius:var(--radius-md);z-index:2000;background:#0f172a;border:1px solid #334155;flex-direction:column;gap:2px;min-width:220px;padding:4px;animation:.1s dropFadeIn;display:flex;position:absolute;top:calc(100% + 4px);left:0;box-shadow:0 10px 25px #0009,0 0 1px #ffffff1a}@keyframes dropFadeIn{0%{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:translateY(0)}}.dropdown-header{text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);padding:6px 10px 3px;font-size:10px;font-weight:700}.dropdown-divider{background:var(--border-subtle);height:1px;margin:4px 0}.dropdown-item{text-align:left;width:100%;color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:none;align-items:center;gap:8px;padding:6px 10px;font-size:12px;transition:all .12s;display:flex}.dropdown-item:hover{color:#fff;background:#1e293b}.dropdown-item.text-danger:hover{color:#f87171;background:#ef444426}.navbar-actions-group{align-items:center;gap:6px;display:flex}.btn-quick-play,.btn-quick-step,.btn-quick-reset{padding:4px 8px}.lab-workspace-body{flex-direction:column;flex:1;height:calc(100vh - 56px);min-height:0;display:flex;position:relative;overflow:hidden}.lab-split-pane{flex-direction:row;flex:1;height:100%;min-height:0;display:flex;overflow:hidden}.lab-editor-panel{background:var(--bg-app);border-right:1px solid var(--border-subtle);flex-direction:column;width:30%;min-width:200px;height:100%;min-height:0;display:flex;overflow:hidden}.lab-preview-panel{background:var(--bg-app);flex:1;min-width:0;height:100%;min-height:0;overflow:hidden}.lab-resize-handle{background:var(--border-subtle);cursor:col-resize;flex-shrink:0;width:5px;transition:background .15s;position:relative}.lab-resize-handle:hover,.lab-resize-handle:active{background:var(--accent-cyan)}.lab-resize-handle:after{content:"";position:absolute;inset:0 -4px}.lab-inspector-drawer{background:var(--bg-surface);border-left:1px solid var(--border-default);z-index:1200;flex-direction:column;width:380px;max-width:90vw;animation:.18s cubic-bezier(.16,1,.3,1) drawerSlideIn;display:flex;position:absolute;top:0;bottom:0;right:0;overflow:hidden;box-shadow:-8px 0 30px #000000b3}@keyframes drawerSlideIn{0%{transform:translate(100%)}to{transform:translate(0)}}#inspector-mount,#inspector-mount>.inspector-panel{border-left:none;width:100%;height:100%;min-height:0}.inspector-header-top{justify-content:space-between;align-items:center;display:flex}.inspector-title-group{align-items:center;gap:8px;display:flex}.inspector-icon{font-size:14px}.btn-close-inspector{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--text-muted);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;transition:all .15s;display:flex}.btn-close-inspector:hover{color:#fff;background:var(--bg-hover)}#viewport-mount{width:100%;max-width:none;height:100%;margin:0}.physics-viewport-card{background:var(--bg-app);border:none;border-radius:0;flex-direction:column;width:100%;height:100%;display:flex;overflow:hidden}.viewport-header{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);scrollbar-width:none;flex-wrap:nowrap;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;height:44px;padding:0 12px;display:flex;overflow-x:auto}.viewport-header::-webkit-scrollbar{display:none}.viewport-title-group{flex-shrink:0;align-items:center;gap:8px;display:flex}.viewport-controls-group{flex-shrink:0;align-items:center;gap:6px;display:flex}.btn-ctrl.btn-reset,#btn-vp-reset{background:var(--bg-card);border:1px solid var(--border-default);color:var(--text-primary);opacity:1!important;visibility:visible!important;display:inline-flex!important}.btn-ctrl.btn-reset:hover,#btn-vp-reset:hover{background:var(--bg-hover);border-color:var(--accent-cyan);color:var(--accent-cyan)}.viewport-menus-group{flex-shrink:0;align-items:center;gap:6px;display:flex}.vp-dropdown{position:relative}.btn-vp-dropdown{font-size:11px;font-weight:600;font-family:var(--font-mono);background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:4px;padding:4px 8px;display:flex}.btn-vp-dropdown:hover{color:#fff;border-color:var(--border-default);background:var(--bg-hover)}.vp-dropdown-menu{border-radius:var(--radius-md);z-index:1000;background:#0f172a;border:1px solid #334155;flex-direction:column;gap:2px;min-width:190px;padding:4px;animation:.1s dropFadeIn;display:flex;position:absolute;top:calc(100% + 4px);right:0;box-shadow:0 10px 25px #0009}.vp-dropdown-header{text-transform:uppercase;color:var(--text-dim);padding:4px 8px 2px;font-size:10px;font-weight:700}.vp-dropdown-item{text-align:left;width:100%;color:var(--text-secondary);font-size:11px;font-family:var(--font-mono);cursor:pointer;background:0 0;border:none;border-radius:3px;padding:5px 8px;transition:all .12s}.vp-dropdown-item:hover,.vp-dropdown-item.active{color:var(--accent-cyan);background:#1e293b}.vp-dropdown-check-item{font-size:11px;font-family:var(--font-sans);color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:3px;align-items:center;gap:8px;padding:5px 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6px}.lce-header-actions{align-items:center;gap:4px;display:flex}.btn-lce-tool{border:1px solid var(--border-subtle);color:var(--text-muted);font-family:var(--font-sans);border-radius:var(--radius-sm);cursor:pointer;background:0 0;padding:2px 8px;font-size:10px;font-weight:600;transition:all .15s}.btn-lce-tool:hover{color:var(--text-primary);border-color:var(--border-default);background:var(--bg-hover)}.teacher-source-workspace{background:var(--bg-surface);flex-direction:column;width:100%;height:100%;display:flex;overflow:hidden}.teacher-source-workspace .lce-header{flex-shrink:0}.teacher-source-workspace .lce-editor-container{background:var(--bg-editor);flex:1;width:100%;height:calc(100% - 44px);position:relative;overflow:hidden}.teacher-source-workspace .sci-editor-container{width:100%;box-shadow:none;background:0 0;border:none;height:100%!important}.teacher-source-workspace .sci-editor-body,.teacher-source-workspace .sci-editor-syntax-layer,.teacher-source-workspace .sci-editor-textarea{width:100%;height:100%}.lab-mobile-tabs{display:none}@media (width<=1024px){.viewport-title{display:none}}@media (width<=767px){.desktop-menu-bar{display:none}.viewport-header{gap:6px;height:40px;padding:0 8px;overflow-x:auto}.viewport-status-badge{display:none}.btn-ctrl{padding:3px 8px;font-size:11px}.lab-split-pane{flex-direction:column;position:relative}.lab-editor-panel{border-right:none;width:100%!important}.lab-preview-panel{width:100%!important}.lab-resize-handle{display:none}.lab-inspector-drawer{width:100%!important;max-width:100%!important}.lab-mobile-tabs{background:var(--bg-surface);border-top:1px solid var(--border-subtle);flex-shrink:0;height:40px;display:flex}.lab-editor-panel[data-mobile-hidden],.lab-preview-panel[data-mobile-hidden]{display:none}}.lab-tab-btn{color:var(--text-muted);letter-spacing:.04em;cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;flex:1;font-size:13px;font-weight:600;transition:color .15s,background 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