:root{--bg:#f6f7fb;--surface:#fff;--surface-muted:#f3f4f6;--border:#e5e7eb;--text:#1f2937;--text-muted:#6b7280;--primary:#f38020;--primary-hover:#d96b12;--user-bubble:#1f2937;--danger:#b91c1c;--radius:10px}@media (prefers-color-scheme:dark){:root{--bg:#0f1117;--surface:#171923;--surface-muted:#1f2330;--border:#2a2f3d;--text:#e5e7eb;--text-muted:#9ca3af;--user-bubble:#2563eb}}*{box-sizing:border-box}body,html,#root{background-color:var(--bg);height:100%;color:var(--text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-container,.login-container{flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);width:100%;max-width:440px;padding:32px;box-shadow:0 10px 30px #0000000f}.login-card h1{margin:0 0 8px;font-size:24px}.login-card .subtitle{color:var(--text-muted);margin:0 0 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span{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.new-chat-btn{border:1px dashed var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:8px;padding:10px;font-weight:600}.new-chat-btn:hover{border-color:var(--primary);color:var(--primary)}.nav{flex-direction:column;gap:4px;display:flex}.nav-item{text-align:left;color:var(--text);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:8px 10px;font-size:14px}.nav-item:hover{background:var(--surface-muted)}.nav-item.active{background:var(--surface-muted);color:var(--primary);font-weight:600}.chat-list-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);padding:8px 4px 4px;font-size:11px}.chat-list{flex-direction:column;flex:1;gap:2px;margin:0;padding:0;list-style:none;display:flex}.chat-list .muted{color:var(--text-muted);padding:6px 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10px;font-size:13px}.logout-btn:hover{color:var(--danger);border-color:var(--danger)}.main{flex-direction:column;gap:16px;min-width:0;padding:24px;display:flex;overflow:auto}.main .chat-container{max-width:none;height:calc(100vh - 48px)}.company-page{flex-direction:column;gap:16px;display:flex}.page-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.page-header h2{margin:0}.page-header .subtitle{color:var(--text-muted);margin:4px 0 0;font-size:14px}button.primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:10px 16px;font-weight:600}button.primary:hover:not(:disabled){background:var(--primary-hover)}button.primary:disabled{opacity:.5;cursor:not-allowed}.doc-list{gap:12px;margin:0;padding:0;list-style:none;display:grid}.doc-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.doc-card-head{justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;display:flex}.doc-card-head h3{margin:0;font-size:16px}.doc-actions{gap:12px;display:flex}.doc-content{white-space:pre-wrap;word-break:break-word;background:var(--surface-muted);color:var(--text);border-radius:6px;margin:0;padding:10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.modal-backdrop{z-index:50;background:#0006;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);flex-direction:column;gap:10px;width:100%;max-width:560px;padding:20px;display:flex}.modal h3{margin:0 0 4px}.modal input,.modal textarea{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px;font-family:inherit;font-size:14px}.modal textarea{resize:vertical;min-height:160px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.modal-actions{justify-content:flex-end;gap:8px;display:flex}.banner{border-radius:8px;padding:10px 12px;font-size:14px}.archived-banner{background:var(--surface-muted);border:1px solid var(--border);color:var(--text-muted)}.warn-banner{color:#92400e;background:#fef3c7;border:1px solid #fde68a}.error-banner{color:var(--danger);background:#fee2e2;border:1px solid #fecaca;justify-content:space-between;align-items:center;gap:12px;display:flex}.rename-input{font:inherit;background:var(--surface);color:var(--text);border:1px solid var(--primary);border-radius:4px;padding:2px 6px}@media (width<=720px){.shell{grid-template-rows:auto 1fr;grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid var(--border);max-height:40vh}.main .chat-container{height:calc(60vh - 48px)}}