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.15s;display:flex}.file-chip-remove:hover{color:var(--error)}.attach-btn{width:32px;height:32px;color:var(--text-muted);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;transition:background .15s,color .15s;display:flex}.attach-btn:hover:not(:disabled){background:var(--bg-hover);color:var(--text-secondary)}.attach-btn:disabled{opacity:.4;cursor:not-allowed}.followup-questions{flex-direction:column;gap:6px;margin-top:10px;display:flex}.followup-chip{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;text-align:left;white-space:normal;background:0 0;border-radius:20px;align-items:center;padding:8px 14px;font-size:13px;line-height:1.4;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.followup-chip:hover{background:var(--bg-hover);border-color:var(--accent);color:var(--text-primary)}.kb-page{flex:1;max-width:760px;margin:0 auto;padding:32px 20px;overflow-y:auto}.kb-header{margin-bottom:24px}.kb-header h2{color:var(--text-primary);margin:0 0 6px;font-size:22px;font-weight:700}.kb-subtitle{color:var(--text-muted);margin:0 0 16px;font-size:13px}.kb-upload-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:8px 20px;font-size:13px;font-weight:600;transition:background .15s;display:inline-flex}.kb-upload-btn:hover:not(:disabled){background:var(--accent-hover)}.kb-upload-btn:disabled{opacity:.6;cursor:not-allowed}.kb-actions{margin-bottom:12px}.kb-url-row{align-items:center;gap:8px;display:flex}.kb-url-input{border:1px solid var(--border);background:var(--bg-primary);color:var(--text-primary);border-radius:8px;outline:none;flex:1;padding:8px 12px;font-size:13px;transition:border-color .15s}.kb-url-input:focus{border-color:var(--accent)}.kb-url-input::placeholder{color:var(--text-muted)}.kb-url-btn{white-space:nowrap;flex-shrink:0}.kb-error{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error);border-radius:6px;margin-bottom:12px;padding:8px 12px;font-size:12px}.kb-file-list{background:var(--panel-border);border:1px solid var(--panel-border);border-radius:8px;flex-direction:column;gap:1px;display:flex;overflow:hidden}.kb-empty{text-align:center;color:var(--text-muted);background:var(--bg-secondary);padding:40px 20px}.kb-empty svg{opacity:.4;width:32px;height:32px;margin-bottom:8px}.kb-empty p{margin:4px 0;font-size:14px}.kb-empty-hint{color:var(--panel-text-dim);font-size:12px!important}.kb-file-item{background:var(--bg-secondary);align-items:center;gap:12px;padding:12px 14px;transition:background .1s;display:flex}.kb-file-item:hover{background:var(--panel-hover-bg)}.kb-file-icon{color:#fff;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:10px;font-weight:700;display:flex}.kb-file-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.kb-file-name{color:var(--panel-text-bright);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.kb-file-meta{color:var(--panel-text-dim);font-size:11px}.kb-badge{border-radius:3px;margin-left:6px;padding:1px 6px;font-size:10px;font-weight:600;display:inline-block}.kb-badge-processing{background:var(--warning-bg);color:var(--warning-text)}.kb-badge-failed{background:var(--error-bg);color:var(--error)}.kb-mcp-section{border-top:1px solid var(--border);margin-top:32px;padding-top:24px}.kb-mcp-header{margin-bottom:16px}.kb-mcp-header h3{color:var(--text-primary);margin:0 0 4px;font-size:18px;font-weight:700}.kb-mcp-header .kb-subtitle{margin-bottom:12px}@media (width<=640px){.sidebar{display:none}}