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8px;border-radius:4px;width:140px;transition:border-color .15s,width .15s}.pane-search:focus{outline:none;border-color:var(--accent);width:200px}.pane-search::placeholder{color:var(--text-dim)}.file-tree{overflow:auto;padding:8px 0;flex:1}.file-row{padding:5px 14px;cursor:pointer;font-size:13px;display:flex;justify-content:space-between;align-items:center}.file-row:hover{background:var(--bg-elev-2)}.file-row.active{background:var(--bg-elev-2);color:var(--accent)}.editor-host{flex:1;min-height:0;overflow:hidden}.cm-editor{height:100%!important;font-size:13px}.pdf-host{flex:1;min-height:0;background:#2b2f3b;overflow:auto;padding:12px}.pdf-host canvas{display:block;margin:0 auto 12px;box-shadow:0 2px 12px #0006}.compile-bar{padding:10px 14px;border-bottom:1px solid var(--border);display:flex;gap:10px;align-items:center}.compile-status{color:var(--text-dim);font-size:12px}.log-pane{font-family:ui-monospace,SFMono-Regular,monospace;font-size:12px;white-space:pre;overflow:auto;padding:10px 14px;color:var(--text-dim);background:var(--bg-elev);max-height:180px;border-top:1px solid var(--border)}.collaborators{display:flex;gap:6px}.collab-dot{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;border:2px solid var(--bg-elev)}.chat-actions{display:flex;gap:6px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--bg-elev-2)}.chat-actions button{font-size:12px;padding:5px 10px}.file-tree-host{flex:1;display:flex;flex-direction:column;min-height:0;position:relative}.file-tree-host.drag-over:after{content:"Drop to upload";position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#6f7bff26;border:2px dashed var(--accent);pointer-events:none;font-weight:600;color:var(--accent);z-index:1}.file-toolbar{display:flex;gap:6px;padding:8px 10px;border-bottom:1px solid var(--border);background:var(--bg-elev)}.file-toolbar button{flex:1;font-size:11px;padding:5px 8px}.file-row{gap:6px}.file-row-actions{display:none;gap:2px}.file-row:hover .file-row-actions{display:inline-flex}.file-row-actions button{background:transparent;border:0;color:var(--text-dim);cursor:pointer;padding:2px 5px;border-radius:3px;font-size:12px;line-height:1}.file-row-actions button:hover{background:var(--bg-elev-2);color:var(--text)}.snapshots-panel{display:flex;flex-direction:column;border-top:1px solid var(--border);background:var(--bg-elev);max-height:320px;min-height:200px}.snapshots-header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--border);font-size:13px}.snapshots-create{display:flex;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.snapshots-create input{flex:1}.snapshots-create button{padding:8px 14px}.snapshots-list{flex:1;overflow-y:auto;padding:6px 0}.snapshots-empty{padding:14px;color:var(--text-dim);font-size:13px}.snapshot-row{display:flex;align-items:center;gap:10px;padding:8px 14px;border-bottom:1px solid var(--border)}.snapshot-message{font-size:13px;color:var(--text)}.snapshot-meta{font-size:11px;color:var(--text-dim);margin-top:2px}.collab-panel{display:flex;flex-direction:column;border-top:1px solid var(--border);background:var(--bg-elev);max-height:320px;min-height:200px}.collab-header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--border);font-size:13px}.collab-invite{display:flex;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.collab-invite input[type=email]{flex:1}.collab-invite select{width:100px}.collab-invite button{padding:8px 14px}.collab-list{flex:1;overflow-y:auto;padding:6px 0}.collab-row{display:flex;align-items:center;gap:10px;padding:8px 14px;border-bottom:1px solid var(--border)}.collab-name{font-size:13px;color:var(--text)}.collab-email{font-size:11px;color:var(--text-dim);margin-top:2px}.outline-panel{display:flex;flex-direction:column;border-top:1px solid var(--border);background:var(--bg-elev);max-height:220px;min-height:120px}.outline-header{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;border-bottom:1px solid var(--border);font-size:13px}.outline-list{flex:1;overflow-y:auto;padding:4px 0}.outline-row{display:block;width:100%;text-align:left;background:transparent;border:0;color:var(--text);font-size:12.5px;cursor:pointer;padding:4px 12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.outline-row:hover{background:var(--bg-elev-2);color:var(--accent)}.outline-empty{padding:14px;color:var(--text-dim);font-size:12.5px}.math-panel{display:flex;flex-direction:column;border-top:1px solid var(--border);background:var(--bg-elev);max-height:260px;min-height:200px}.math-header{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;border-bottom:1px solid var(--border);gap:8px}.math-tabs{display:flex;gap:4px;flex-wrap:wrap;flex:1}.math-tab{background:transparent;border:1px solid transparent;color:var(--text-dim);padding:4px 10px;font-size:12px;border-radius:4px;cursor:pointer}.math-tab:hover{background:var(--bg-elev-2);color:var(--text)}.math-tab.active{background:var(--bg-elev-2);color:var(--accent);border-color:var(--border)}.math-grid{flex:1;overflow-y:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:4px;padding:8px 10px}.math-cell{background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:16px;padding:8px 6px;border-radius:4px;cursor:pointer;min-height:36px;display:flex;align-items:center;justify-content:center;font-family:"STIX Two Math","Cambria Math","Latin Modern 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0;white-space:nowrap;pointer-events:none}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.modal-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;padding:24px;max-width:760px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 30px 60px -20px #0009}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.modal-tiers{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}@media (max-width: 600px){.modal-tiers{grid-template-columns:1fr}}.modal-tier{border:1px solid var(--border);border-radius:10px;padding:18px;background:var(--bg-elev-2)}.modal-tier.current{border-color:var(--success)}.modal-tier-name{font-size:14px;text-transform:uppercase;color:var(--text-dim);letter-spacing:.06em}.modal-tier-price{font-size:26px;font-weight:700;margin:4px 0 8px;letter-spacing:-.02em}.modal-tier ul{list-style:none;padding:0;margin:12px 0;font-size:13px;color:var(--text)}.modal-tier li{padding:4px 0;display:flex;gap:8px}.modal-tier li:before{content:"✓";color:var(--accent)}.billing-toggle{display:inline-flex;align-items:center;padding:4px;background:var(--bg-elev-2);border:1px solid var(--border);border-radius:999px}.billing-toggle button{padding:6px 14px;border-radius:999px;background:transparent;border:0;color:var(--text-dim);font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.billing-toggle button.active{background:linear-gradient(135deg,#6f7bff,#8c63ff);color:#fff}.billing-toggle .save{background:#4ec5ff2e;color:#4ec5ff;font-size:10px;padding:2px 6px;border-radius:999px;font-weight:700}