:root{--bg:#1e1f24;--bg-panel:#26282f;--bg-elevated:#2e313a;--border:#3a3d46;--text:#d7d9de;--text-muted:#8b8f99;--text-h:#fff;--accent:#4f8cff;--accent-hover:#6ea0ff;--danger:#f16060;--success:#22c55e;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:14px/1.5 var(--sans);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{min-height:100vh;margin:0}#root{min-height:100vh}h1,h2,h3,h4{color:var(--text-h);margin:0 0 8px;font-weight:600}button{font:inherit;color:var(--text);background:var(--bg-elevated);border:1px solid var(--border);cursor:pointer;border-radius:4px;padding:6px 12px}button:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:#fff}button:disabled{opacity:.5;cursor:not-allowed}button.active{background:var(--accent);border-color:var(--accent);color:#fff}input,select{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:6px 8px}a{color:var(--accent)}.muted{color:var(--text-muted)}.small{font-size:12px}.error{color:var(--danger)}.dashboard{max-width:900px;margin:0 auto;padding:40px 24px}.dashboard-header{margin-bottom:24px}.new-project-form{gap:8px;margin-bottom:24px;display:flex}.new-project-form input{flex:1}.project-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.project-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:6px;align-items:center;gap:16px;padding:12px 16px;display:flex}.project-card .project-name{color:var(--text-h);flex:1;font-weight:600;text-decoration:none}.project-card-actions{gap:6px;display:flex}.workspace{flex-direction:column;height:100vh;display:flex}.workspace-header{background:var(--bg-panel);border-bottom:1px solid var(--border);align-items:center;gap:16px;padding:10px 16px;display:flex}.workspace-header h2{margin:0}.back-link{color:var(--text-muted);text-decoration:none}.workspace-body{flex:1;min-height:0;display:flex}.workspace-sidebar{background:var(--bg-panel);border-right:1px solid var(--border);flex-shrink:0;width:280px;padding:12px;overflow-y:auto}.workspace-main{flex-direction:column;flex:1;min-width:0;display:flex}.workspace-viewer-row{flex:1;min-height:0;display:flex}.dropzone{border:2px dashed var(--border);text-align:center;cursor:pointer;color:var(--text-muted);border-radius:6px;padding:20px 12px;font-size:13px}.dropzone.drag-over{border-color:var(--accent);color:var(--text)}.upload-list{margin:8px 0 0;padding:0;font-size:12px;list-style:none}.upload-list li{justify-content:space-between;padding:4px 0;display:flex}.file-list{flex-direction:column;gap:4px;margin:12px 0;padding:0;list-style:none;display:flex}.file-list li{border-radius:4px;align-items:center;display:flex}.file-list li.active{background:var(--bg-elevated)}.file-list-item{text-align:left;background:0 0;border:none;flex-direction:column;flex:1;align-items:flex-start;gap:2px;padding:6px 8px;display:flex}.file-list-item:hover{background:var(--bg-elevated);color:var(--text)}.file-name{word-break:break-all;font-size:13px}.file-delete{color:var(--text-muted);background:0 0;border:none;padding:4px 8px}.file-delete:hover{color:#fff;background:var(--danger)}.page-thumbnails{grid-template-columns:1fr 1fr;gap:8px;display:grid}.page-thumb{border:2px solid var(--border);cursor:pointer;background:#fff;border-radius:4px;overflow:hidden}.page-thumb.active{border-color:var(--accent)}.thumb-canvas,.thumb-img{object-fit:contain;background:#fff;width:100%;height:90px;display:block}.thumb-error{height:90px;color:var(--danger);justify-content:center;align-items:center;font-size:11px;display:flex}.page-thumb-footer{background:var(--bg-elevated);color:var(--text);justify-content:space-between;align-items:center;padding:4px 6px;font-size:11px;display:flex}.viewer-toolbar{background:var(--bg-panel);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:6px;padding:8px 12px;display:flex}.viewer-toolbar input[type=number]{width:50px}.toolbar-sep{background:var(--border);align-self:stretch;width:1px;margin:0 4px}.viewer-root{flex-direction:column;flex:1;min-width:0;display:flex}.viewer-canvas-wrap{background:#3a3d42;flex:1;position:relative;overflow:hidden}.viewer-canvas-wrap.calibrating canvas,.viewer-canvas-wrap.editing canvas{cursor:crosshair}.viewer-canvas-wrap canvas{cursor:grab;width:100%;height:100%;display:block}.viewer-overlay-msg{color:#fff;pointer-events:none;background:#000000b3;border-radius:4px;padding:6px 14px;font-size:13px;position:absolute;top:12px;left:50%;transform:translate(-50%)}.viewer-overlay-msg.error{background:var(--danger)}.viewer-overlay-msg.hint{background:var(--accent)}.viewer-statusbar{background:var(--bg-panel);border-top:1px solid var(--border);color:var(--text-muted);font-size:12px;font-family:var(--mono);gap:20px;padding:4px 12px;display:flex}.side-panel{background:var(--bg-panel);border-left:1px solid var(--border);flex-direction:column;flex-shrink:0;width:300px;min-height:0;display:flex}.side-panel-tabs{border-bottom:1px solid var(--border);display:flex}.side-panel-tabs button{background:0 0;border:none;border-radius:0;flex:1}.side-panel-tabs button.active{background:var(--bg-elevated);color:var(--text-h);box-shadow:inset 0 -2px var(--accent)}.calibration-panel,.analysis-panel{flex:1;padding:16px;overflow-y:auto}.calibration-form-row{gap:8px;margin-bottom:10px;display:flex}.calibration-form-row input{flex:1;min-width:0}.calibration-form-actions{justify-content:flex-end;gap:8px;display:flex}.scale-summary{flex-direction:column;gap:6px;margin-bottom:20px;font-size:13px;display:flex}.export-section{border-top:1px solid var(--border);padding-top:16px}.custom-scale-input{align-items:center;gap:4px;display:flex}.custom-scale-input input{width:70px}.export-result{background:var(--bg-elevated);border-radius:4px;margin-top:10px;padding:8px;font-size:13px}.analyze-button{background:var(--accent);border-color:var(--accent);color:#fff;width:100%;margin-bottom:8px;padding:10px;font-weight:600}.analysis-stages{flex-direction:column;gap:4px;margin:16px 0;font-size:13px;display:flex}.analysis-stage-row{border-bottom:1px dashed var(--border);justify-content:space-between;padding:3px 0;display:flex}.model-summary{grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px;display:grid}.model-summary>div{background:var(--bg-elevated);text-align:center;border-radius:4px;padding:8px;font-size:13px}.model-summary strong{color:var(--text-h);font-size:18px;display:block}.overlay-toggle{cursor:pointer;align-items:center;gap:6px;margin-bottom:12px;font-size:13px;display:flex}.confidence-filter{align-items:center;gap:8px;margin-bottom:16px;font-size:13px;display:flex}.confidence-filter select{flex:1}.room-list,.validation-list,.element-inspector{border-top:1px solid var(--border);margin-top:12px;padding-top:12px;font-size:13px}.room-list-row{justify-content:space-between;padding:4px 0;display:flex}.validation-row{color:#fbbf24;padding:4px 0}.element-inspector div{padding:2px 0}.editor-panel{flex:1;padding:16px;overflow-y:auto}.editor-tools{grid-template-columns:1fr 1fr;gap:6px;margin-bottom:10px;display:grid}.editor-undo-redo{gap:6px;margin-bottom:16px;display:flex}.editor-undo-redo button{flex:1}.element-editor,.room-editor{border-top:1px solid var(--border);margin-top:14px;padding-top:14px}.element-editor-row{justify-content:space-between;padding:3px 0;font-size:13px;display:flex}.field-row{justify-content:space-between;align-items:center;gap:8px;margin:10px 0;font-size:13px;display:flex}.field-row input{width:90px}.delete-element-button{color:var(--danger);border-color:var(--danger);width:100%;margin-top:10px}.delete-element-button:hover{background:var(--danger);color:#fff}.room-editor-head{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.room-editor-head h4{margin:0}.room-editor-row{align-items:center;gap:6px;margin-bottom:6px;display:flex}.room-editor-row input{flex:1;min-width:0}.room-editor-row .delete-element-button{width:auto;margin-top:0;padding:4px 8px}.chat-panel{flex-direction:column;flex:1;min-height:0;padding:16px;display:flex}.chat-messages{flex-direction:column;flex:1;gap:8px;min-height:100px;margin:12px 0;display:flex;overflow-y:auto}.chat-message{white-space:pre-wrap;border-radius:6px;max-width:90%;padding:8px 10px;font-size:13px}.chat-message.user{background:var(--accent);color:#fff;align-self:flex-end}.chat-message.assistant{background:var(--bg-elevated);align-self:flex-start}.chat-confirm-card{background:var(--bg-elevated);border:1px solid var(--accent);border-radius:6px;padding:10px;font-size:13px}.chat-confirm-card ul{margin:6px 0;padding-left:18px}.chat-confirm-actions{justify-content:flex-end;gap:8px;margin-top:8px;display:flex}.chat-input-row{gap:6px;display:flex}.chat-input-row input{flex:1;min-width:0}.viewer3d-root{flex-direction:column;flex:1;min-width:0;display:flex;position:relative}.viewer3d-toolbar{background:var(--bg-panel);border-bottom:1px solid var(--border);gap:6px;padding:8px 12px;display:flex}.viewer3d-canvas-wrap{flex:1;min-height:0}.viewer3d-canvas-wrap canvas{width:100%;height:100%;display:block}.viewer3d-inspector{background:var(--bg-panel);border:1px solid var(--border);border-radius:6px;min-width:180px;padding:12px;font-size:13px;position:absolute;top:56px;right:16px}.viewer3d-inspector div{padding:2px 0}.view-mode-toggle{gap:4px;display:flex}.export-panel{flex:1;padding:16px}.export-links{flex-direction:column;gap:8px;margin-top:12px;display:flex}.export-link{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text);border-radius:4px;padding:10px 12px;font-size:13px;text-decoration:none;display:block}.export-link:hover{border-color:var(--accent);color:var(--text-h)}.export-link.disabled{opacity:.4;pointer-events:none}