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.doc-nav{display:block;margin:0 0 12px;border:1px solid #334155;border-radius:11px;padding:11px 13px;color:#dbeafe;font-weight:800}.doc-nav:hover{background:#1e293b}.active-doc{max-width:900px;margin:0 auto 22px;background:#eff6ff;border:1px solid #bfdbfe;border-radius:14px;padding:12px 15px;display:flex;align-items:center;justify-content:space-between;gap:15px}.active-doc strong{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#1d4ed8}.active-doc span{display:block;margin-top:3px;font-weight:800}.active-doc a{font-size:12px;color:#1d4ed8;font-weight:800}.composer .attach{display:grid;place-items:center;text-decoration:none;border-radius:10px;padding:10px 14px;background:#eef2f7;color:#64748b;font-weight:800}.doc-body{background:#f4f6f8}.doc-shell{display:grid;grid-template-columns:285px 1fr;height:100vh;overflow:hidden}.doc-side{background:#0f172a;color:#e5e7eb;padding:18px 14px;display:flex;flex-direction:column;min-width:0}.doc-main{display:grid;grid-template-rows:auto 1fr;min-width:0;min-height:0}.doc-workspace{overflow:auto;padding:28px max(22px,calc((100% - 1160px)/2)) 50px}.doc-upload-card{background:#fff;border:1px solid #e5e7eb;border-radius:20px;padding:24px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.8fr) auto;gap:20px;align-items:center}.doc-upload-card h1{margin:6px 0 9px;font-size:26px}.doc-upload-card p{margin:0;color:#64748b;line-height:1.55}.dropzone{border:1.5px dashed #94a3b8;border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:6px;cursor:pointer;background:#f8fafc}.dropzone input{display:none}.dropzone strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dropzone span{font-size:11px;color:#64748b}.primary-btn,.secondary-btn,.danger-btn{border:0;border-radius:10px;padding:11px 14px;font-weight:800;cursor:pointer}.primary-btn{background:#0f172a;color:#fff}.secondary-btn{background:#e2e8f0;color:#0f172a}.danger-btn{background:#fee2e2;color:#991b1b}.primary-btn:disabled,.secondary-btn:disabled{opacity:.6;cursor:wait}.doc-empty{background:#fff;border:1px solid #e5e7eb;border-radius:18px;margin-top:18px;padding:60px 25px;text-align:center;color:#64748b}.doc-empty-icon{font-size:40px;color:#94a3b8}.doc-empty h2{color:#0f172a;margin-bottom:8px}.doc-detail{margin-top:18px}.doc-detail-head{background:#fff;border:1px solid #e5e7eb;border-radius:18px;padding:22px;display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.doc-detail-head h1{margin:5px 0}.doc-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.doc-grid{margin-top:0}.doc-summary{line-height:1.65}.doc-summary h1,.doc-summary h2,.doc-summary h3{color:#0f172a}.doc-kv{display:grid;gap:9px}.doc-kv>div{display:flex;justify-content:space-between;border-bottom:1px solid #e5e7eb;padding-bottom:8px;gap:12px}.doc-kv span{color:#64748b}.callout{margin-top:16px;padding:13px;border-radius:12px;background:#f0fdf4;border:1px solid #bbf7d0;display:grid;gap:4px}.callout strong{color:#166534}.callout span{font-size:12px;color:#166534;line-height:1.5}.doc-list{overflow:auto;display:flex;flex-direction:column;gap:5px}.doc-link{border:0;background:transparent;color:#cbd5e1;padding:10px;border-radius:10px;text-align:left;cursor:pointer}.doc-link span,.doc-link small{display:block}.doc-link span{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.doc-link small{color:#64748b;margin-top:3px}.doc-link:hover,.doc-link.active{background:#1e293b;color:#fff}.sheet-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.sheet-head h2{margin-bottom:4px}.sheet-head p{margin-top:0}.sheet-head select{padding:9px 12px;border:1px solid #cbd5e1;border-radius:9px;background:#fff}.sample-hint{margin:12px 0;padding:11px 13px;background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;border-radius:10px;font-size:13px;font-weight:700}.table-scroll{overflow:auto;max-height:520px;border:1px solid #e5e7eb;border-radius:12px}.data-table{border-collapse:separate;border-spacing:0;width:max-content;min-width:100%;font-size:12px}.data-table th{position:sticky;top:0;background:#f8fafc;z-index:1;font-weight:900;color:#334155}.data-table th,.data-table td{padding:8px 10px;border-bottom:1px solid #e5e7eb;border-right:1px solid #f1f5f9;white-space:nowrap;text-align:left}.data-table tbody tr:hover{background:#f8fafc}@media(max-width:1050px){.doc-upload-card{grid-template-columns:1fr}.doc-actions{justify-content:flex-start}.doc-detail-head{flex-direction:column}}@media(max-width:900px){.doc-shell{grid-template-columns:1fr}.doc-side{position:fixed;z-index:20;left:-290px;top:0;bottom:0;width:285px;transition:.2s}.doc-side.open{left:0}.doc-workspace{padding:16px}.active-doc{margin-left:0;margin-right:0}.sheet-head{flex-direction:column}}
/* Update 11.3: document intelligence lives inside chat */
.pending-files{max-width:900px;margin:0 auto 9px;display:flex;gap:8px;flex-wrap:wrap}.pending-file,.file-pill{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid #dbe2ea;border-radius:12px;padding:8px 10px;min-width:230px;max-width:100%;box-shadow:0 3px 10px rgba(15,23,42,.04)}.pending-file.uploading{border-style:dashed;background:#f8fafc}.pending-file-main,.file-pill-main{min-width:0;display:block}.pending-file-main strong,.file-pill-main strong{display:block;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:360px}.pending-file-main small,.file-pill-main small{display:block;color:#64748b;font-size:10px;margin-top:2px}.file-icon{width:26px;height:26px;border-radius:8px;background:#eff6ff;color:#2563eb;display:grid;place-items:center;flex:0 0 auto;font-weight:900}.removePending{border:0!important;background:transparent!important;color:#94a3b8!important;font-size:20px!important;padding:0 2px!important;margin-left:auto;line-height:1}.removePending:hover{color:#dc2626!important}.file-spinner{width:20px;height:20px;border:2px solid #cbd5e1;border-top-color:#2563eb;border-radius:50%;animation:prspin .8s linear infinite;flex:0 0 auto}@keyframes prspin{to{transform:rotate(360deg)}}.conversation-files{max-width:900px;margin:0 auto 22px;padding:12px 14px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px}.conversation-files-label{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:#64748b;font-weight:900;margin-bottom:8px}.conversation-files-list{display:flex;gap:7px;flex-wrap:wrap}.file-pill.locked{box-shadow:none;background:#fff}.message-files{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:9px}.message-files span{display:inline-flex;align-items:center;background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;border-radius:8px;padding:5px 8px;font-size:11px;font-weight:800}.composer .attach{border:0;display:grid;place-items:center;text-decoration:none;border-radius:10px;padding:10px 14px;background:#eef2f7;color:#475569;font-weight:900;cursor:pointer;font-size:20px;line-height:1}.composer .attach:hover{background:#e2e8f0;color:#0f172a}.composer button:disabled{opacity:.55;cursor:wait}.doc-nav{display:none!important}@media(max-width:700px){.pending-file,.file-pill{min-width:100%}.pending-file-main strong,.file-pill-main strong{max-width:230px}.conversation-files-list{display:grid;grid-template-columns:1fr}.message-files{display:grid;grid-template-columns:1fr}}
/* Update 11.4: reliable chat document flow, loading state, and per-user AI file library */
.library-btn{width:100%;margin:0 0 12px;border:1px solid #334155;background:#111c31;color:#dbeafe;border-radius:10px;padding:10px 12px;font-weight:800;text-align:left;cursor:pointer}.library-btn:hover{background:#1e293b}.library-panel{position:fixed;right:24px;bottom:112px;width:min(620px,calc(100vw - 48px));max-height:68vh;background:#fff;border:1px solid #dbe2ea;border-radius:18px;box-shadow:0 24px 70px rgba(15,23,42,.22);z-index:40;overflow:hidden;display:grid;grid-template-rows:auto 1fr}.library-panel-head{padding:16px 18px;border-bottom:1px solid #e5e7eb;display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.library-panel-head strong{display:block;font-size:17px}.library-panel-head span{display:block;color:#64748b;font-size:11px;margin-top:3px}.library-panel-head button{border:0;background:#eef2f7;color:#475569;width:32px;height:32px;border-radius:9px;font-size:20px;cursor:pointer}.library-list{overflow:auto;padding:10px}.library-loading,.library-empty{padding:28px;text-align:center;color:#64748b}.library-loading{display:flex;gap:9px;align-items:center;justify-content:center}.library-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:10px;align-items:center;padding:11px;border-bottom:1px solid #eef2f7}.library-item:last-child{border-bottom:0}.library-item-main{min-width:0}.library-item-main strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.library-item-main small,.library-item-main em{display:block;color:#64748b;font-size:10px;margin-top:3px;font-style:normal}.attachLibrary,.downloadLibrary{border:0;border-radius:8px;padding:7px 9px;font-weight:800;font-size:11px;cursor:pointer}.attachLibrary{background:#0f172a;color:#fff}.downloadLibrary{background:#eef2f7;color:#334155}.badtext{color:#991b1b}.working-bubble{display:flex;align-items:center;gap:12px;padding:12px 0}.working-bubble strong{display:block;font-size:13px}.working-bubble small{display:block;color:#64748b;margin-top:3px}.ai-spinner{width:20px;height:20px;border:2px solid #cbd5e1;border-top-color:#2563eb;border-radius:50%;animation:prspin .8s linear infinite;display:inline-block;flex:0 0 auto}.working-msg{margin-bottom:18px}.working-msg .bubble{min-height:44px}.pending-files:empty{display:none!important}@media(max-width:700px){.library-panel{right:10px;left:10px;bottom:100px;width:auto;max-height:72vh}.library-item{grid-template-columns:auto minmax(0,1fr);}.attachLibrary,.downloadLibrary{grid-column:auto}.library-item .attachLibrary{margin-left:36px}.library-item .downloadLibrary{margin-right:0}}