:root{color-scheme:dark;--bg: #0b0e13;--panel: #12161d;--panel-border: #232a34;--text: #d7dce3;--muted: #8a93a0;--accent: #4da3ff;--error: #ff6b6b}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Segoe UI,system-ui,sans-serif;font-size:13px;background:var(--bg);color:var(--text)}button{background:#1b2230;color:var(--text);border:1px solid #2c3648;border-radius:4px;padding:5px 12px;font-size:13px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button:disabled{opacity:.5;cursor:default}.muted{color:var(--muted)}kbd{background:#1b2230;border:1px solid #2c3648;border-radius:3px;padding:1px 6px;font-family:inherit;font-size:12px}.app-shell{display:flex;flex-direction:column;height:100%}.toolbar-spacer{flex:1}.search-input{background:#10151d;color:var(--text);border:1px solid #2c3648;border-radius:4px;padding:5px 10px;font-size:13px;width:180px}.search-input:focus{outline:none;border-color:var(--accent)}.search-input.search-missed{border-color:var(--error)}.search-input:disabled{opacity:.5}.status-bar{display:flex;align-items:center;gap:16px;padding:6px 12px;background:var(--panel);border-top:1px solid var(--panel-border);color:var(--muted);font-size:12px}.status-bar.status-error .status-message{color:var(--error)}.cancel-button{padding:2px 10px;font-size:12px;margin-left:4px}.studio-header{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--panel-border)}.header-left,.header-right{display:flex;align-items:center;gap:8px}.header-right{margin-left:auto}.header-center{flex:1;text-align:center;min-width:0}.brand{font-size:14px;font-weight:600;letter-spacing:.4px;white-space:nowrap}.mode-label{font-size:12px;color:var(--muted);padding:2px 8px;border:1px solid var(--panel-border);border-radius:10px}.doc-name{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.demo-badge{font-size:11px;font-weight:700;letter-spacing:.6px;color:#ffcf70;background:#3a2f14;border:1px solid #6b551f;padding:2px 7px;border-radius:4px;cursor:help}.authoring-cluster{display:flex;align-items:center;gap:6px}.save-btn{border-color:var(--accent);color:var(--accent)}.icon-btn{padding:5px 9px;line-height:1}.icon-btn svg{display:block}.popover-anchor{position:relative;display:inline-flex}.popover{position:absolute;top:calc(100% + 6px);right:0;z-index:50;background:var(--panel);border:1px solid var(--panel-border);border-radius:6px;box-shadow:0 8px 24px #0006;padding:8px;min-width:200px}.overflow-menu{display:flex;flex-direction:column;gap:8px}.menu-group{display:flex;flex-direction:column;gap:2px}.menu-heading{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);padding:2px 6px}.overflow-menu button[role=menuitem]{text-align:left;background:transparent;border:1px solid transparent;border-radius:4px;padding:6px 8px;width:100%}.overflow-menu button[role=menuitem]:hover:not(:disabled){background:#1b2230;border-color:transparent}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--panel);border:1px solid var(--panel-border);border-radius:8px;min-width:340px;max-width:480px;box-shadow:0 16px 48px #00000080}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--panel-border)}.modal-header h2{font-size:14px;margin:0}.modal-close{background:transparent;border:none;font-size:18px;line-height:1;padding:0 4px;color:var(--muted)}.modal-body{padding:16px}.modal-body p{margin:0 0 10px}.modal-body h3{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:14px 0 6px}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 16px;border-top:1px solid var(--panel-border)}button.primary{border-color:var(--accent);color:var(--accent)}.kv-table,.shortcuts-table{border-collapse:collapse;width:100%}.kv-table th,.shortcuts-table th{text-align:left;color:var(--muted);font-weight:500;padding:3px 12px 3px 0;white-space:nowrap;vertical-align:top}.dock-layout{flex:1;min-height:0;display:flex;flex-direction:column}.dock-row{flex:1 1 0;min-height:0;display:flex}.dock-region{overflow:hidden;min-width:0;min-height:0}.dock-center{flex:1 1 0;display:flex}.dock-left,.dock-right{background:var(--panel);flex:0 0 auto}.dock-left{border-right:1px solid var(--panel-border)}.dock-right{border-left:1px solid var(--panel-border)}.dock-bottom{flex:0 0 auto;border-top:1px solid var(--panel-border);background:var(--panel)}.resize-handle{flex:0 0 auto;background:transparent;border:none;padding:0}.resize-handle.vertical{width:5px;cursor:col-resize}.resize-handle.horizontal{height:5px;cursor:row-resize}.resize-handle:hover,.resize-handle:focus-visible{background:var(--accent)}.dock-rail{flex:0 0 16px;background:var(--panel);color:var(--muted);border:none;border-radius:0;padding:0;display:flex;align-items:center;justify-content:center}.dock-rail-left{border-right:1px solid var(--panel-border)}.dock-rail-right{border-left:1px solid var(--panel-border)}.dock-rail-bottom{flex-basis:16px;border-top:1px solid var(--panel-border)}.dock-header{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-bottom:1px solid var(--panel-border);flex:0 0 auto}.dock-header h2{font-size:12px;text-transform:uppercase;letter-spacing:.6px;margin:0;color:var(--muted)}.dock-collapse{background:transparent;border:none;color:var(--muted);font-size:15px;line-height:1;padding:0 4px}.dock-empty{padding:12px}.command-palette{align-self:flex-start;margin-top:12vh;width:540px;max-width:calc(100vw - 32px);background:var(--panel);border:1px solid var(--panel-border);border-radius:8px;box-shadow:0 16px 48px #00000080;overflow:hidden;display:flex;flex-direction:column}.command-input{background:transparent;border:none;border-bottom:1px solid var(--panel-border);color:var(--text);font-size:15px;padding:12px 14px;outline:none}.command-list{list-style:none;margin:0;padding:6px;max-height:320px;overflow-y:auto}.command-item{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:5px;cursor:pointer}.command-item.active{background:#223049}.command-item kbd{color:var(--muted)}.command-empty{padding:10px}.tree{flex:1;overflow-y:auto;padding-bottom:8px}.tree-id{color:var(--accent);font-family:Consolas,monospace;font-size:12px;min-width:18px}.tree-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-tag{font-size:11px;color:var(--muted);border:1px solid var(--panel-border);border-radius:8px;padding:1px 6px}.outliner{display:flex;flex-direction:column;height:100%}.outliner-search{margin:8px 10px;background:#10151d;color:var(--text);border:1px solid #2c3648;border-radius:4px;padding:5px 8px;font-size:12px}.outliner-search:focus{outline:none;border-color:var(--accent)}.tree-row{display:flex;align-items:center;gap:4px;padding:2px 8px 2px 0;cursor:pointer;font-size:12.5px;white-space:nowrap}.tree-row:hover{background:#1b2230}.tree-row.selected{background:#223049}.tree-row.highlighted{background:#182031}.tree-twist{background:transparent;border:none;color:var(--muted);width:14px;padding:0;font-size:10px;flex:0 0 auto}.tree-twist.hidden{visibility:hidden}.tree-icon{color:var(--muted)}.tree-row .tree-id{color:var(--muted);font-variant-numeric:tabular-nums;min-width:1.5em}.tree-row .tree-label{overflow:hidden;text-overflow:ellipsis}.tree-row .tree-tag{margin-left:auto;color:var(--muted);font-size:11px;padding-left:8px}.connect-panel{display:grid;gap:8px;padding:10px 12px;color:var(--text);border:1px solid var(--accent);border-radius:6px;font-size:12px}.connect-modes{display:flex;align-items:center;gap:8px}.connect-modes strong{margin-right:auto}.connect-modes button{padding:4px 9px;color:var(--text);background:#10151d;border:1px solid #2c3648;border-radius:4px;cursor:pointer}.connect-modes button.active{border-color:var(--accent, #6aa6ff);background:#1a2634}.connect-status{display:grid;gap:6px}.connect-preview{font-variant-numeric:tabular-nums;color:#9fd0a0}.connect-actions{display:flex;gap:8px}.connect-actions button{padding:4px 10px;color:var(--text);background:#10151d;border:1px solid #2c3648;border-radius:4px;cursor:pointer}.alignment-panel{display:grid;gap:9px;padding:12px;color:var(--text);border:1px solid var(--accent);border-radius:6px}.alignment-heading,.alignment-summary{display:flex;justify-content:space-between;gap:8px}.alignment-panel p,.alignment-panel small{margin:0;color:var(--muted)}.alignment-panel label{display:grid;grid-template-columns:1fr 1.3fr;align-items:center;gap:8px}.alignment-summary{padding:8px;font-family:ui-monospace,monospace;font-size:11px;background:#ffffff0a}.alignment-segments{display:grid;gap:5px;max-height:190px;margin:0;padding:0 0 0 20px;overflow-y:auto;font-size:12px}.alignment-segments li{display:grid;grid-template-columns:54px 1fr 1fr;align-items:center;gap:6px}.alignment-segments label{display:block}.alignment-segments input{width:100%}.alignment-segment-kind{color:var(--muted);font-family:ui-monospace,monospace}.alignment-error,.status-edit-error{color:var(--error)}.inspector{width:100%;height:100%;display:flex;flex-direction:column;background:var(--panel);overflow:hidden}.entity-children{margin-top:6px;font-size:12px}.inspector h2{font-size:12px;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin:16px 0 6px}.inspector section:first-child h2{margin-top:0}.inspector table{width:100%;border-collapse:collapse}.inspector th{text-align:left;font-weight:500;color:var(--muted);padding:2px 8px 2px 0;white-space:nowrap;vertical-align:top}.inspector td{padding:2px 0;word-break:break-word}.lane-width-cell{display:inline-flex;align-items:center;gap:5px;white-space:nowrap}.lane-width-cell em{color:var(--muted);font-style:normal}.lane-width-input{width:74px;padding:3px 6px;color:var(--text);border:1px solid #2c3648;border-radius:4px;background:#10151d}.compact-button{padding:2px 8px;font-size:11px}.danger-button:hover:not(:disabled){color:#ffd0d0;border-color:var(--error)}.inspector-body{flex:1;overflow-y:auto;padding:12px}.breadcrumb{font-size:11px;color:var(--muted);margin-bottom:8px}.breadcrumb-sep{margin:0 4px}.template-panel{flex:0 0 auto;display:grid;gap:6px;padding:8px 12px;background:#0f141c;border-top:1px solid var(--panel-border)}.template-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px}.template-row strong{min-width:64px}.template-row label{display:grid;gap:2px;color:var(--muted);font-size:11px}.template-row input,.template-row select{padding:4px 7px;color:var(--text);background:#10151d;border:1px solid #2c3648;border-radius:4px}.template-row input[type=number]{width:64px}.template-row button{padding:4px 9px;color:var(--text);background:#10151d;border:1px solid #2c3648;border-radius:4px;cursor:pointer}.station-panel{flex:0 0 auto;max-height:260px;overflow:auto;padding:10px 12px;background:#0f141c;border-top:1px solid var(--panel-border)}.station-header{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}.station-header h2{margin:0;color:var(--text);font-size:13px}.station-ruler{position:relative;height:30px;margin:0 12px 10px;border-top:2px solid #2c3648}.station-marker{position:absolute;top:-7px;padding:0;color:var(--muted);font-size:10px;line-height:1;background:none;border:none;cursor:pointer;transform:translate(-50%)}.station-marker:before{display:block;width:2px;height:12px;margin:0 auto 3px;background:#4a5a72;content:""}.station-marker-selected{color:var(--text)}.station-marker-selected:before{background:var(--accent, #6aa6ff)}.station-cursor{position:absolute;top:-5px;width:1px;height:10px;background:#f0a868;transform:translate(-50%)}.station-cursor-draft{top:-6px;height:20px}.station-ruler-scrubbable{cursor:ew-resize;touch-action:none}.station-scrubber{position:absolute;top:-7px;width:13px;height:13px;background:#f0a868;border:2px solid #10151d;border-radius:50%;cursor:ew-resize;transform:translate(-50%);touch-action:none}.station-scrubber:hover,.station-scrubber:focus-visible,.station-scrubber-active{background:#ffbf7a;outline:none;box-shadow:0 0 0 2px var(--accent, #6aa6ff)}.station-composer,.station-taper{display:flex;align-items:end;flex-wrap:wrap;gap:10px;margin-bottom:8px;padding:8px;border:1px solid #2c3648;border-radius:4px;background:#141b25}.station-composer strong,.station-taper strong{align-self:center;margin-right:4px}.station-composer label,.station-taper label{display:grid;gap:2px;color:var(--muted);font-size:11px}.station-composer input,.station-taper input{width:90px;padding:4px 7px;color:var(--text);border:1px solid #2c3648;border-radius:4px;background:#10151d}.station-keyframes ul{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 0;padding:0;list-style:none}.station-keyframes li{display:flex;align-items:center;gap:6px;padding:3px 7px;font-size:11px;border:1px solid #2c3648;border-radius:3px;background:#10151d}.station-keyframes button{padding:0 4px;color:var(--muted);background:none;border:none;cursor:pointer}.cross-section-panel{flex:0 0 auto;max-height:300px;overflow:auto;padding:10px 12px 12px;background:#0f141c;border-top:1px solid var(--panel-border)}.cross-section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:8px}.cross-section-header h2{margin:0 0 2px;color:var(--text);font-size:13px}.cross-section-composer{display:flex;align-items:end;gap:10px;margin-bottom:8px;padding:8px;border:1px solid #2c3648;border-radius:4px;background:#141b25}.cross-section-composer strong{align-self:center;margin-right:4px}.cross-section-composer label{display:grid;gap:2px;color:var(--muted);font-size:11px}.cross-section-composer input,.cross-section-composer select{min-width:110px;padding:4px 7px;color:var(--text);border:1px solid #2c3648;border-radius:4px;background:#10151d}.cross-section-composer input{width:90px;min-width:90px}.cross-section-widths{display:flex;gap:16px;margin:0}.cross-section-widths div{display:grid;grid-template-columns:auto auto;gap:5px}.cross-section-widths dt{color:var(--muted)}.cross-section-widths dd{margin:0;font-variant-numeric:tabular-nums}.cross-section-diagram{display:flex;align-items:stretch;min-width:480px;height:68px;overflow:visible;border:1px solid #354154;border-radius:4px;background:#171d27}.cross-section-handle{position:absolute;top:0;bottom:0;z-index:3;width:11px;cursor:ew-resize;touch-action:none}.cross-section-handle-right{right:-5px}.cross-section-handle-left{left:-5px}.cross-section-handle:after{position:absolute;top:10px;bottom:10px;left:50%;width:2px;background:transparent;border-radius:1px;transform:translate(-50%);content:""}.cross-section-handle:hover:after,.cross-section-handle-active:after{background:var(--accent, #6aa6ff)}.cross-section-lane{position:relative;display:flex;min-width:54px;flex-basis:0;flex-direction:column;align-items:center;justify-content:center;gap:1px;padding:4px 7px;border:0;border-right:1px solid #354154;border-radius:0;background:#1b2230}.cross-section-lane:hover:not(:disabled){border-color:#354154;background:#222c3c}.cross-section-lane-selected{background:#203b5c;box-shadow:inset 0 0 0 2px var(--accent)}.cross-section-lane span,.cross-section-lane small{max-width:100%;overflow:hidden;color:var(--muted);font-size:10px;text-overflow:ellipsis;white-space:nowrap}.cross-section-lane i{position:absolute;inset:0 0 auto;height:3px;background:#e8e3d7}.cross-section-reference{position:relative;z-index:1;width:3px;flex:0 0 3px;background:#f2cf58;box-shadow:0 0 0 1px #0b0e13}.cross-section-reference span{position:absolute;top:5px;left:7px;color:#f2cf58;font-size:10px;white-space:nowrap}.cross-section-table-wrap{margin-top:8px;overflow-x:auto}.cross-section-table{width:100%;min-width:620px;border-collapse:collapse;font-size:12px}.cross-section-table th,.cross-section-table td{padding:3px 8px;text-align:left;white-space:nowrap;border-bottom:1px solid #1f2733}.cross-section-table thead th{color:var(--muted);font-weight:500}.cross-section-table tbody th{font-weight:500}.cross-section-row-selected{background:#4da3ff1f}.diagnostic-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.diagnostic-list code{color:var(--accent);font-size:12px}.diagnostic-list li.clickable{cursor:pointer}.diagnostic-list li.clickable:hover{background:#1b2230}.severity-error{border-left:2px solid var(--error);padding-left:8px}.severity-warning{border-left:2px solid #e8b34a;padding-left:8px}.severity-info{border-left:2px solid var(--panel-border);padding-left:8px}.bottom-dock{display:flex;flex-direction:column;height:100%}.bottom-tabs{display:flex;align-items:center;gap:2px;padding:4px 8px 0;border-bottom:1px solid var(--panel-border);flex:0 0 auto}.bottom-tab{background:transparent;border:none;border-bottom:2px solid transparent;border-radius:0;color:var(--muted);padding:6px 12px;font-size:12.5px}.bottom-tab:hover:not(:disabled){border-color:transparent;color:var(--text)}.bottom-tab.active{color:var(--text);border-bottom-color:var(--accent)}.bottom-tabs-spacer{flex:1}.bottom-content{flex:1;overflow-y:auto;padding:10px 12px}.problems-summary{font-size:12px;margin-bottom:6px}.coverage-table th,.link-list{color:var(--muted)}.link-list{margin:0;padding-left:18px}.section-tab{display:flex;flex-direction:column;gap:14px}.layer-toggle{display:flex;align-items:center;gap:4px;cursor:pointer;-webkit-user-select:none;user-select:none}.viewport{position:relative;flex:1;min-height:0;min-width:0}.viewport-canvas{width:100%;height:100%;display:block;outline:none}.drop-overlay{position:absolute;top:12px;right:12px;bottom:12px;left:12px;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--accent);border:2px dashed var(--accent);border-radius:8px;background:#0d1420b3;pointer-events:none}.layers-popover{display:flex;flex-direction:column;gap:10px}.layers-group h3{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 4px}.layers-group .layer-toggle{padding:2px 0}.viewport-topbar{position:absolute;top:10px;right:10px;display:flex;gap:8px;z-index:10}.view-controls{display:inline-flex;gap:2px;background:#12161dd9;border:1px solid var(--panel-border);border-radius:6px;padding:2px}.viewport-btn{background:#12161dd9;border:1px solid var(--panel-border);color:var(--text);border-radius:5px;padding:5px 10px}.view-controls .viewport-btn{border:none;background:transparent}.viewport-btn.active{color:var(--accent);background:#1b2230}.drive-controls{position:absolute;bottom:16px;left:50%;transform:translate(-50%);display:flex;gap:8px;z-index:10}.drive-btn{background:#12161de6;border:1px solid var(--panel-border);color:var(--text);border-radius:20px;padding:8px 18px;font-size:13px}.drive-btn.play{color:#7fd18a;border-color:#2c4a33}.drive-btn.stop{color:var(--error);border-color:#55272c}.tool-rail{position:absolute;top:10px;left:10px;z-index:10;display:flex;flex-direction:column;gap:4px;background:#12161dd9;border:1px solid var(--panel-border);border-radius:6px;padding:3px}.tool-btn{width:30px;height:30px;display:flex;align-items:center;justify-content:center;font-size:16px;background:transparent;border:1px solid transparent;border-radius:5px;color:var(--text)}.tool-btn.active{color:var(--accent);background:#1b2230;border-color:#2c3648}.tool-hint{position:absolute;top:12px;left:50%;transform:translate(-50%);z-index:10;background:#12161de6;border:1px solid var(--panel-border);border-radius:14px;padding:4px 12px;font-size:12px;color:var(--muted);pointer-events:none}.scenario-view{flex:1;min-height:0;overflow-y:auto;padding:24px 28px;background:var(--bg)}.scenario-empty{margin-top:40px;text-align:center}.scenario-header{margin-bottom:20px;border-bottom:1px solid var(--panel-border);padding-bottom:12px}.scenario-header h1{margin:0 0 4px;font-size:20px;font-weight:600}.scenario-header p{margin:0;font-size:13px}.scenario-section{max-width:720px;margin-bottom:24px}.scenario-section h2{margin:0 0 8px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.scenario-list{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}.scenario-list li{padding:3px 10px;border:1px solid var(--panel-border);border-radius:4px;background:var(--panel);font-size:13px}.scenario-selections{margin-top:8px;font-size:12px}.scenario-tree{font-size:13px;line-height:1.7}.scenario-act,.scenario-group,.scenario-maneuver{margin-left:16px;border-left:1px solid var(--panel-border);padding-left:12px}.scenario-node-story{font-weight:600}.scenario-node-event{color:var(--muted)}