.loading-container{height:100%;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:10}.spinner{width:48px;height:48px;border:6px solid #e0e0e0;border-top:6px solid #00ffd5;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-container p{color:#181a1b;font-size:1.2rem;font-weight:500;margin:0}.kn2-library{display:flex;flex-direction:column;gap:16px}.kn2-page-head{display:flex;flex-direction:column;gap:2px;margin-bottom:20px}.kn2-page-eyebrow{font-family:var(--font-body);font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--app-primary, #6366f1)}.kn2-page-title{font-family:var(--font-head);font-size:1.6rem;font-weight:700;color:var(--app-text);margin:0;line-height:1.2}.kn2-page-desc{font-family:var(--font-body);font-size:.9rem;color:var(--app-text-secondary);line-height:1.65;margin:4px 0 0;max-width:640px}.kn2-stats-strip{display:flex;align-items:stretch;background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:12px;box-shadow:0 1px 4px #0000000a;overflow:hidden}.kn2-stat-tile{flex:1;display:flex;align-items:center;gap:12px;padding:14px 20px;min-width:0}.kn2-stat-divider{width:1px;background:var(--app-border);flex-shrink:0;margin:10px 0}.kn2-stat-tile-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}.kn2-stat-tile-icon--indigo{background:#6366f11a;color:#6366f1}.kn2-stat-tile-icon--green{background:#10b9811f;color:#059669}.kn2-stat-tile-icon--amber{background:#f59e4224;color:#d97706}.kn2-stat-tile-body{display:flex;flex-direction:column;gap:2px;min-width:0}.kn2-stat-tile-value{display:flex;align-items:center;gap:7px;font-family:var(--font-head);font-size:1.5rem;font-weight:700;color:var(--app-text);line-height:1}.kn2-stat-tile-label{font-family:var(--font-body);font-size:.72rem;font-weight:600;color:var(--app-text-secondary);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}.kn2-live-dot{width:8px;height:8px;border-radius:50%;background:#10b981;flex-shrink:0;box-shadow:0 0 0 3px #10b98133}.kn2-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.kn2-filters{display:flex;align-items:center;gap:4px;padding:3px;background:var(--app-bg);border:1px solid var(--app-border);border-radius:9px}.kn2-filter{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 11px;border:none;border-radius:6px;background:transparent;color:var(--app-text-secondary);font-family:var(--font-body);font-size:12.5px;font-weight:600;cursor:pointer;transition:all .15s;white-space:nowrap}.kn2-filter:hover{color:var(--app-text)}.kn2-filter--active{background:var(--app-card-bg);color:var(--app-text);box-shadow:0 1px 3px #00000014}.kn2-filter-count{font-size:10.5px;font-weight:700;min-width:17px;height:17px;padding:0 5px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;background:var(--app-border);color:var(--app-text-secondary)}.kn2-filter--active .kn2-filter-count{background:#6366f11f;color:var(--app-primary, #6366f1)}.kn2-toolbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.kn2-search{display:flex;align-items:center;gap:7px;height:34px;padding:0 10px;min-width:200px;background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:8px;color:var(--app-text-secondary);transition:border-color .15s}.kn2-search:focus-within{border-color:var(--app-primary, #6366f1)}.kn2-search input{flex:1;min-width:0;border:none;outline:none;background:transparent;font-family:var(--font-body);font-size:12.5px;color:var(--app-text)}.kn2-search input::placeholder{color:var(--app-text-secondary);opacity:.7}.kn2-search-clear{display:grid;place-items:center;width:18px;height:18px;padding:0;border:none;border-radius:50%;background:var(--app-border);color:var(--app-text-secondary);cursor:pointer}.kn2-btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border:1px solid var(--app-border);background:var(--app-card-bg);color:var(--app-text);font-family:var(--font-body);font-size:12.5px;font-weight:600;border-radius:8px;white-space:nowrap;cursor:pointer;transition:all .15s}.kn2-btn:hover:not(:disabled){border-color:var(--app-text-secondary);background:var(--app-bg)}.kn2-btn:disabled{opacity:.5;cursor:not-allowed}.kn2-btn--primary{background:var(--app-primary, #6366f1);border-color:var(--app-primary, #6366f1);color:#fff}.kn2-btn--primary:hover:not(:disabled){background:color-mix(in srgb,var(--app-primary, #6366f1) 88%,#000);border-color:color-mix(in srgb,var(--app-primary, #6366f1) 88%,#000)}.kn2-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.kn2-card{display:flex;flex-direction:column;gap:10px;padding:16px;background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:12px;box-shadow:0 1px 4px #0000000a;transition:border-color .15s,box-shadow .15s,transform .15s}.kn2-card:hover{border-color:color-mix(in srgb,var(--app-primary, #6366f1) 35%,var(--app-border));box-shadow:0 4px 14px #00000012;transform:translateY(-1px)}.kn2-card--editing:hover{transform:none}.kn2-card-head{display:flex;align-items:flex-start;gap:11px}.kn2-card-title-wrap{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}.kn2-card-title{font-family:var(--font-head);font-size:.95rem;font-weight:600;color:var(--app-text);margin:0;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kn2-card-chips{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.kn2-chip{display:inline-flex;align-items:center;gap:4px;height:19px;padding:0 7px;border-radius:5px;background:var(--app-bg);border:1px solid var(--app-border);color:var(--app-text-secondary);font-family:var(--font-body);font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;white-space:nowrap}.kn2-file-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}.kn2-file-icon--pdf{background:#ef44441a;color:#dc2626}.kn2-file-icon--csv{background:#10b9811a;color:#059669}.kn2-file-icon--xlsx{background:#0596691a;color:#0d9488}.kn2-file-icon--generic{background:#6366f11a;color:#6366f1}.kn2-status{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 9px;border-radius:999px;font-family:var(--font-body);font-size:11px;font-weight:600;white-space:nowrap;flex-shrink:0}.kn2-status-dot{width:6px;height:6px;border-radius:50%;background:currentColor}.kn2-status--published{background:#22c55e1a;color:#16a34a}.kn2-status--draft{background:#f59e421f;color:#d97706}.kn2-status--archived{background:#7878821f;color:var(--app-text-secondary)}.kn2-card-desc{margin:0;font-family:var(--font-body);font-size:12.5px;line-height:1.55;color:var(--app-text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.kn2-card-desc--empty{opacity:.65;font-style:italic}.kn2-card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;padding-top:10px;border-top:1px solid var(--app-border)}.kn2-card-foot-actions{display:flex;align-items:center;gap:4px}.kn2-icon-btn{display:grid;place-items:center;width:28px;height:28px;padding:0;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--app-text-secondary);cursor:pointer;transition:all .13s}.kn2-icon-btn:hover:not(:disabled){background:var(--app-bg);border-color:var(--app-border);color:var(--app-text)}.kn2-icon-btn--danger:hover:not(:disabled){background:#ef444414;border-color:#ef444440;color:#dc2626}.kn2-icon-btn:disabled{opacity:.45;cursor:not-allowed}.kn2-edit-textarea{width:100%;padding:8px 10px;border:1px solid var(--app-border);border-radius:8px;background:var(--app-bg);color:var(--app-text);font-family:var(--font-body);font-size:12.5px;line-height:1.5;resize:vertical;outline:none}.kn2-edit-textarea:focus{border-color:var(--app-primary, #6366f1)}.kn2-card--skeleton{gap:12px;pointer-events:none}.kn2-skel{border-radius:8px;background:linear-gradient(90deg,var(--app-border) 25%,color-mix(in srgb,var(--app-border) 40%,var(--app-card-bg)) 50%,var(--app-border) 75%);background-size:200% 100%;animation:kn2-shimmer 1.3s ease-in-out infinite}.kn2-skel--icon{width:40px;height:40px;border-radius:10px}.kn2-skel--title{height:14px;width:65%}.kn2-skel--line{height:10px;width:100%}.kn2-skel--short{width:45%}@keyframes kn2-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.kn2-empty{display:flex;flex-direction:column;align-items:center;gap:8px;padding:48px 24px;border:1.5px dashed var(--app-border);border-radius:14px;background:var(--app-card-bg);text-align:center;cursor:pointer;font-family:var(--font-body);transition:border-color .15s,background .15s}.kn2-empty:hover{border-color:color-mix(in srgb,var(--app-primary, #6366f1) 45%,var(--app-border))}.kn2-empty--filter{cursor:default;padding:36px 24px}.kn2-empty-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;background:#6366f11a;color:var(--app-primary, #6366f1);margin-bottom:4px}.kn2-empty-title{font-family:var(--font-head);font-size:1.05rem;font-weight:700;color:var(--app-text)}.kn2-empty-desc{font-size:.85rem;color:var(--app-text-secondary);line-height:1.6;max-width:420px}.kn2-empty-cta{margin-top:10px}.kn2-drawer{display:flex;flex-direction:column;gap:16px;padding:4px 2px 12px;min-height:100%}.kn2-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:120px;padding:18px 14px;border:1.5px dashed var(--app-border);border-radius:12px;background:var(--app-bg);cursor:pointer;text-align:center;transition:border-color .15s,background .15s}.kn2-dropzone:hover,.kn2-dropzone--over{border-color:var(--app-primary, #6366f1);background:#6366f10d}.kn2-dropzone--filled{cursor:default;border-style:solid;background:var(--app-card-bg)}.kn2-dropzone-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:#6366f11a;color:var(--app-primary, #6366f1)}.kn2-dropzone-text{font-family:var(--font-body);font-size:12.5px;color:var(--app-text-secondary)}.kn2-dropzone-text strong{color:var(--app-text);font-weight:600}.kn2-dropzone-hint{font-family:var(--font-body);font-size:11px;color:var(--app-text-secondary);opacity:.75}.kn2-dropzone-file{display:flex;align-items:center;gap:10px;width:100%}.kn2-dropzone-file-meta{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px;text-align:left}.kn2-dropzone-file-name{font-family:var(--font-body);font-size:12.5px;font-weight:600;color:var(--app-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kn2-dropzone-file-size{font-family:var(--font-body);font-size:11px;color:var(--app-text-secondary)}.kn2-field{display:flex;flex-direction:column;gap:6px}.kn2-field-label{font-family:var(--font-body);font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--app-text-secondary)}.kn2-field-textarea{width:100%;padding:9px 11px;border:1px solid var(--app-border);border-radius:8px;background:var(--app-card-bg);color:var(--app-text);font-family:var(--font-body);font-size:13px;outline:none;transition:border-color .15s;resize:vertical;line-height:1.5}.kn2-field-textarea:focus{border-color:var(--app-primary, #6366f1)}.kn2-field-textarea:disabled{opacity:.6}.kn2-drawer-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--app-border)}@media(max-width:860px){.kn2-stats-strip{flex-direction:column}.kn2-stat-divider{width:auto;height:1px;margin:0 10px}.kn2-stat-tile{padding:12px 16px}}@media(max-width:640px){.kn2-grid{grid-template-columns:1fr}.kn2-toolbar,.kn2-toolbar-right{flex-direction:column;align-items:stretch}.kn2-filters{overflow-x:auto}.kn2-search{min-width:0}.kn2-btn--primary{justify-content:center}}[data-theme=dark] .kn2-stats-strip,[data-theme=dark] .kn2-card{background:#ffffff08;box-shadow:none}[data-theme=dark] .kn2-card:hover{box-shadow:0 4px 14px #00000059}[data-theme=dark] .kn2-filter--active{background:#ffffff14;box-shadow:none}[data-theme=dark] .kn2-empty,[data-theme=dark] .kn2-dropzone--filled{background:#ffffff08}.kn2-folder-list-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.kn2-folder-list-actions{display:flex;gap:8px}.kn2-section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--app-text-secondary)}.kn2-stat-tile-icon--violet{background:#8b5cf61a;color:#8b5cf6}.kn2-folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.kn2-folder-card{background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:12px;padding:16px;display:flex;align-items:flex-start;gap:12px;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .12s;position:relative}.kn2-folder-card:hover{border-color:var(--app-primary, #6366f1);box-shadow:0 2px 12px #6366f11a;transform:translateY(-1px)}.kn2-folder-card:focus-visible{outline:2px solid var(--app-primary, #6366f1);outline-offset:2px}.kn2-folder-card--skeleton{pointer-events:none;min-height:80px}.kn2-folder-card-icon{color:#f59e0b;flex-shrink:0;margin-top:2px}.kn2-folder-card-body{flex:1;min-width:0}.kn2-folder-card-name{font-size:14px;font-weight:600;color:var(--app-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left}.kn2-folder-card-meta{font-size:12px;color:var(--app-text-secondary);margin-top:3px;display:flex;align-items:center;gap:8px}.kn2-folder-card-agents{display:flex;align-items:center;gap:3px;font-size:11px}.kn2-folder-agent-pills{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}.kn2-folder-agent-pill{font-size:10.5px;background:#6366f11a;color:#6366f1;border-radius:4px;padding:2px 6px;font-weight:500;white-space:nowrap;max-width:120px;overflow:hidden;text-overflow:ellipsis}.kn2-folder-agent-pill--more{background:var(--app-border);color:var(--app-text-secondary)}.kn2-folder-card-actions{display:flex;flex-direction:column;gap:2px;opacity:0;transition:opacity .15s}.kn2-folder-card:hover .kn2-folder-card-actions{opacity:1}.kn2-folder-detail-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.kn2-back-btn{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--app-text-secondary);background:none;border:none;cursor:pointer;padding:4px 0;transition:color .15s}.kn2-back-btn:hover{color:var(--app-text)}.kn2-folder-detail-title{display:flex;align-items:center;gap:8px;flex:1}.kn2-folder-detail-icon{color:#f59e0b}.kn2-folder-detail-title span:first-of-type{font-size:16px;font-weight:700;color:var(--app-text)}.kn2-folder-detail-count{font-size:12px;color:var(--app-text-secondary);background:var(--app-border);border-radius:10px;padding:1px 8px}.kn2-folder-agent-assign{margin-left:auto}.kn2-agent-picker{position:relative}.kn2-agent-picker-btn{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--app-text);background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:8px;padding:6px 10px;cursor:pointer;transition:border-color .15s;white-space:nowrap;max-width:280px}.kn2-agent-picker-btn:hover{border-color:var(--app-primary, #6366f1)}.kn2-agent-picker-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px;color:var(--app-text-secondary)}.kn2-agent-picker-chev{flex-shrink:0;transition:transform .15s;color:var(--app-text-secondary)}.kn2-agent-picker-chev.open{transform:rotate(180deg)}.kn2-agent-picker-menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:10px;min-width:220px;max-height:260px;overflow-y:auto;z-index:200;box-shadow:0 8px 24px #0000001f;padding:4px}.kn2-agent-picker-empty{font-size:12px;color:var(--app-text-secondary);padding:10px 12px}.kn2-agent-picker-opt{width:100%;display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:7px;border:none;background:none;cursor:pointer;font-size:13px;color:var(--app-text);text-align:left;transition:background .12s}.kn2-agent-picker-opt:hover{background:var(--app-border)}.kn2-agent-picker-opt.on{color:#6366f1}.kn2-agent-picker-box{width:15px;height:15px;border-radius:4px;border:1.5px solid var(--app-border);display:grid;place-items:center;flex-shrink:0;transition:background .12s,border-color .12s}.kn2-agent-picker-box.on{background:#6366f1;border-color:#6366f1;color:#fff}.kn2-upload-folder-list{display:flex;flex-direction:column;gap:4px;border:1px solid var(--app-border);border-radius:10px;overflow:hidden;max-height:200px;overflow-y:auto}.kn2-upload-folder-opt{display:flex;align-items:center;gap:8px;padding:9px 12px;border:none;background:none;cursor:pointer;font-size:13px;color:var(--app-text);text-align:left;transition:background .12s}.kn2-upload-folder-opt:hover{background:var(--app-border)}.kn2-upload-folder-opt.on{background:#6366f10d;color:#6366f1}.kn2-upload-folder-box{width:15px;height:15px;border-radius:4px;border:1.5px solid var(--app-border);display:grid;place-items:center;flex-shrink:0;transition:background .12s,border-color .12s}.kn2-upload-folder-box.on{background:#6366f1;border-color:#6366f1;color:#fff}.kn2-upload-folder-new{display:flex;align-items:center;gap:6px;padding:8px 12px;border:none;border-top:1px solid var(--app-border);background:none;cursor:pointer;font-size:12.5px;color:var(--app-text-secondary);text-align:left;transition:color .12s}.kn2-upload-folder-new:hover{color:var(--app-primary, #6366f1)}.kn2-card-folders{display:flex;flex-wrap:wrap;gap:4px;margin:-4px 0 4px}.kn2-folder-chip{display:inline-flex;align-items:center;gap:3px;font-size:10.5px;color:#f59e0b;background:#f59e0b14;border:1px solid rgba(245,158,11,.2);border-radius:4px;padding:1px 6px;font-weight:500}.kn2-modal-overlay{position:fixed;inset:0;background:#0006;z-index:1000;display:grid;place-items:center;animation:kn2-fade-in .15s ease}@keyframes kn2-fade-in{0%{opacity:0}to{opacity:1}}.kn2-modal{background:var(--app-card-bg);border:1px solid var(--app-border);border-radius:14px;padding:20px;width:340px;max-width:calc(100vw - 32px);box-shadow:0 12px 40px #0000002e;display:flex;flex-direction:column;gap:14px;animation:kn2-slide-up .18s cubic-bezier(.22,1,.36,1)}@keyframes kn2-slide-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.kn2-modal-head{display:flex;align-items:center;justify-content:space-between}.kn2-modal-title{font-size:15px;font-weight:700;color:var(--app-text)}.kn2-modal-input{width:100%;padding:9px 12px;border:1px solid var(--app-border);border-radius:8px;background:var(--app-card-bg);color:var(--app-text);font-size:14px;outline:none;box-sizing:border-box;transition:border-color .15s}.kn2-modal-input:focus{border-color:#6366f1}.kn2-modal-foot{display:flex;justify-content:flex-end;gap:8px}.knb-root{padding:0 0 40px}.knb-intro{margin-bottom:20px}.knb-intro-text{font-size:13px;color:var(--app-text-muted);line-height:1.5;margin:0}.knb-intro-link{color:#6366f1;text-decoration:none}.knb-intro-link:hover{text-decoration:underline}.knb-folder-list{display:flex;flex-direction:column;gap:12px}.knb-folder-section{border:1px solid var(--app-border);border-radius:10px;overflow:hidden;background:var(--app-card-bg)}.knb-folder-header{display:flex;align-items:center;gap:8px;width:100%;padding:12px 14px;background:none;border:none;cursor:pointer;text-align:left;color:var(--app-text);transition:background .15s}.knb-folder-header:hover{background:var(--app-hover)}.knb-folder-icon{color:#f59e0b;display:flex}.knb-folder-name{font-size:14px;font-weight:600;flex:1}.knb-folder-badge{font-size:11px;padding:2px 7px;border-radius:4px;background:var(--app-bg);color:var(--app-text-muted);border:1px solid var(--app-border)}.knb-folder-count{font-size:12px;color:var(--app-text-muted)}.knb-folder-chevron{color:var(--app-text-muted);display:flex}.knb-doc-list{padding:0 14px 12px;display:flex;flex-direction:column;gap:6px}.knb-empty-folder{font-size:13px;color:var(--app-text-muted);margin:4px 0 0}.knb-doc-row{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;background:var(--app-bg);border:1px solid var(--app-border)}.knb-doc-info{display:flex;align-items:center;gap:8px;flex:1;min-width:0}.knb-doc-name{font-size:13px;color:var(--app-text);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.knb-doc-chip{font-size:10px;padding:2px 6px;flex-shrink:0}.knb-doc-dl{flex-shrink:0}.knb-empty-state{display:flex;flex-direction:column;align-items:center;gap:10px;padding:48px 24px;text-align:center}.knb-empty-icon{color:var(--app-text-muted);opacity:.5}.knb-empty-title{font-size:16px;font-weight:600;color:var(--app-text);margin:0}.knb-empty-sub{font-size:13px;color:var(--app-text-muted);max-width:380px;margin:0;line-height:1.5}.knb-empty-cta{text-decoration:none;display:inline-block}