:root{--bg: #f4f6f9;--bg-2: #ffffff;--bg-3: #eef1f6;--border: #dfe3ea;--text: #1f2733;--muted: #6b7482;--accent: #2563eb;--accent-2: #1d4ed8;--accent-soft: #e8f0fe;--ok: #15a34a;--err: #dc2626;--busy: #d97706;--shadow: 0 1px 3px rgba(17, 24, 39, .08), 0 1px 2px rgba(17, 24, 39, .04);--shadow-lg: 0 10px 30px rgba(17, 24, 39, .18)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:14px}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--bg-2);color:var(--text);border-radius:6px;padding:6px 12px;transition:background .12s,border-color .12s}button:hover{border-color:var(--accent);background:var(--accent-soft)}button:disabled{opacity:.5;cursor:default}button.link{background:none;border:none;color:var(--muted);padding:2px 6px}button.link:hover{color:var(--accent);background:none}button.danger:hover{border-color:var(--err);background:#fdecec}input{font:inherit;background:var(--bg-2);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:8px 10px;outline:none}input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.muted{color:var(--muted)}.app{display:flex;height:100%}.main{flex:1;display:flex;flex-direction:column;min-width:0}.login-page{height:100%;display:flex;align-items:center;justify-content:center}.login-card{background:var(--bg-2);border:1px solid var(--border);border-radius:12px;padding:36px;width:340px;display:flex;flex-direction:column;gap:12px;text-align:center;box-shadow:var(--shadow-lg)}.login-card h1{margin:0;font-size:22px}.login-card p{margin:0;color:var(--muted)}.login-card button{background:var(--accent);border-color:var(--accent);color:#fff;padding:10px}.login-card button:hover{background:var(--accent-2);border-color:var(--accent-2)}.login-error{color:var(--err);font-size:13px}.sidebar{width:340px;min-width:340px;background:var(--bg-2);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.sidebar-head h1{font-size:16px;margin:0}.section{padding:12px 16px;border-bottom:1px solid var(--border)}.section.grow{flex:1}.section-title{display:flex;align-items:center;justify-content:space-between;gap:8px;font-weight:600;margin-bottom:8px;color:var(--muted);text-transform:uppercase;font-size:11px;letter-spacing:.5px}.inline-form{display:flex;gap:6px;margin-bottom:8px}.inline-form input{flex:1;min-width:0;padding:6px 8px}.project-list{display:flex;flex-direction:column;gap:2px}.project-item{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:6px;cursor:pointer}.project-item:hover{background:var(--bg-3)}.project-item.active{background:var(--accent-soft);outline:1px solid var(--accent)}.project-meta{color:var(--muted);font-size:12px;white-space:nowrap}.upload-hint{color:var(--muted);font-size:12px;margin-bottom:8px;line-height:1.4}.tree{font-size:13px;border-radius:8px;padding:2px;min-height:40px}.tree.drop-target{outline:2px dashed var(--accent);outline-offset:-2px;background:var(--accent-soft)}.docs-section{display:flex;flex-direction:column;min-height:0}.doc-toolbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.doc-toolbar button{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;font-size:12px}.doc-toolbar button svg{flex:none}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2)}.tree-wrap{flex:1;min-height:0;overflow:hidden}.tree-row{display:flex;align-items:center;gap:6px;width:100%;height:100%;padding-right:6px;border-radius:6px;-webkit-user-select:none;user-select:none;cursor:default}.tree-row.folder{cursor:pointer}.tree-row:hover{background:var(--bg-3)}.tree-row.selected{background:var(--accent-soft);outline:1px solid var(--accent);outline-offset:-1px}.tree-row.drop-target{background:var(--accent-soft);outline:1px dashed var(--accent);outline-offset:-1px}.rename-input{flex:1;min-width:0;padding:2px 6px;font-size:13px}.chevron{width:14px;min-width:14px;text-align:center;color:var(--muted);font-size:10px;cursor:pointer}.tree-icon{display:inline-flex;align-items:center}.tree-icon svg{display:block}.tree-row .chevron svg{display:block;margin:0 auto;color:var(--muted)}.tree-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-wrap [role=treeitem]{min-width:0!important;max-width:100%}.tree-children{margin-left:15px;padding-left:6px;border-left:1px solid var(--border)}.tree-actions{display:flex;gap:4px;opacity:.55}.tree-row:hover .tree-actions,.project-item:hover .tree-actions,.section-title .tree-actions{opacity:1}.tree-actions button{padding:3px 8px;font-size:12px;line-height:1}.tree-actions button.icon-only{display:inline-flex;align-items:center;padding:4px 6px}.tree-actions button svg{display:block}.tree-empty{margin:12px 4px;padding:24px 12px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;color:var(--muted);font-size:12px;line-height:1.6;border:1px dashed var(--border);border-radius:8px}.tree-empty svg{color:var(--border)}.badge{display:inline-flex;align-items:center;gap:5px;flex-shrink:0;font-size:11px;padding:2px 8px;border-radius:10px;white-space:nowrap}.badge.ok{color:var(--ok);background:#15a34a1f}.badge.err{color:var(--err);background:#dc26261f}.badge.busy{color:var(--busy);background:#d977061f}.spinner{width:9px;height:9px;border:2px solid var(--busy);border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.notice{margin:10px 16px;padding:10px;border:1px solid var(--busy);border-radius:8px;background:#fff7ed;color:var(--busy);font-size:12px;white-space:pre-wrap}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#11182759;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-2);border-radius:12px;padding:24px;width:360px;max-width:calc(100% - 32px);box-shadow:var(--shadow-lg)}.modal-msg{margin:0 0 20px;line-height:1.5}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.btn-danger{background:var(--err);border-color:var(--err);color:#fff}.btn-danger:hover{background:#b91c1c;border-color:#b91c1c}.chat{flex:1;display:flex;flex-direction:column;min-height:0}.chat-head{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--border);background:var(--bg-2)}.chat-head-actions{display:flex;align-items:center;gap:12px}.scope-picker{display:inline-flex;align-items:center;gap:6px;font-size:12px}.scope-picker select{font:inherit;font-size:12px;max-width:240px;padding:5px 8px;border:1px solid var(--border);border-radius:6px;background:var(--bg-2);color:var(--text);cursor:pointer}.scope-picker select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.chat-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:18px}.msg{display:flex;gap:12px;max-width:860px}.msg.user{align-self:flex-end;flex-direction:row-reverse}.msg-avatar{font-size:20px;line-height:1.6}.msg-body{background:var(--bg-2);border:1px solid var(--border);border-radius:12px;padding:10px 16px;overflow-wrap:anywhere;box-shadow:var(--shadow)}.msg.user .msg-body{background:var(--accent);border-color:var(--accent);color:#fff}.msg.error .msg-body{border-color:var(--err)}.msg-body p{margin:6px 0}.msg-body pre{background:var(--bg-3);padding:10px;border-radius:8px;overflow-x:auto}.msg.user .msg-body pre{background:#ffffff2e}.msg-body table{border-collapse:collapse}.msg-body td,.msg-body th{border:1px solid var(--border);padding:4px 8px}.typing{color:var(--muted);font-style:italic}.clarify-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.chip{font-size:12px;padding:5px 12px;border-radius:14px;border:1px solid var(--accent);color:var(--accent);background:var(--bg-2)}.chip:hover{background:var(--accent-soft)}.chip:disabled{opacity:.5}.sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;padding-top:8px;border-top:1px dashed var(--border)}.source-chip{font-size:11px;color:var(--muted);background:var(--bg-3);border-radius:10px;padding:2px 8px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-input{display:flex;gap:10px;padding:16px 24px;border-top:1px solid var(--border);background:var(--bg-2)}.chat-input input{flex:1;padding:12px 14px;border-radius:10px}.chat-input button{background:var(--accent);border-color:var(--accent);color:#fff;padding:0 20px;border-radius:10px}.chat-input button:hover{background:var(--accent-2);border-color:var(--accent-2)}.chat-input button.stop{background:var(--err);border-color:var(--err)}.chat-input button.stop:hover{background:#b91c1c;border-color:#b91c1c}.empty-state{margin:auto;text-align:center;color:var(--muted);padding:40px}.empty-state h2{color:var(--text)}.empty-state .hint{font-size:13px}