: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)}.app-shell{display:flex;flex-direction:column;height:100%}.toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--panel-border)}.toolbar-title{font-size:14px;font-weight:600;margin:0 12px 0 0;letter-spacing:.4px}.toolbar-spacer{flex:1}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}.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}.layer-toggles{display:flex;gap:10px;margin-left:8px;color:var(--muted);font-size:12px}.layer-toggle{display:flex;align-items:center;gap:4px;cursor:pointer;-webkit-user-select:none;user-select:none}.status-chip{font-size:12px;padding:3px 10px;border-radius:10px;border:1px solid var(--panel-border);color:var(--muted)}.status-chip.status-ready{color:#7fd18a;border-color:#2c4a33}.status-chip.status-failed{color:var(--error);border-color:#55272c}.workspace{display:flex;flex:1;min-height:0}.viewport{position:relative;flex:1;min-height:0;min-width:0}.viewport-stack{display:flex;flex:1;flex-direction:column;min-width:0;min-height: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}.connect-panel{position:absolute;top:12px;left:12px;z-index:5;display:grid;gap:8px;width:260px;padding:10px 12px;color:var(--text);background:#12161df5;border:1px solid #2c3648;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{position:absolute;top:12px;right:12px;z-index:5;display:grid;width:300px;max-height:calc(100% - 24px);gap:9px;padding:12px;overflow-y:auto;color:var(--text);background:#12161df5;border:1px solid var(--accent);border-radius:6px;box-shadow:0 8px 24px #00000059}.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 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#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:hidden;border:1px solid #354154;border-radius:4px;background:#171d27}.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}.lane-width-input{width:74px;padding:3px 6px;color:var(--text);border:1px solid #2c3648;border-radius:4px;background:#10151d}.cross-section-row-selected{background:#4da3ff1f}.compact-button{padding:2px 8px;font-size:11px}.danger-button:hover:not(:disabled){color:#ffd0d0;border-color:var(--error)}.muted{color:var(--muted)}.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}.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}