feat: add Classification column and Excel-style column filters to Pricing & Units tab

- Added Classification column next to Line with color-coded badges (Core=blue, OOC=amber)
- Added Excel-style filter icons on Article Name (text search), Line, and Classification headers
- Filter icons appear on hover; turn blue when active
- Multi-select popover for Line and Classification; free-text popover for Article Name
- Filters work additively alongside the existing global search bar
- ArticleDetails: removed Tariff/Barcode/Origin columns and tab to simplify the view

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/ArticleDetails.tsx

@@ -8,7 +8,7 @@ interface ArticleDetailsProps {
   onEdit: (index: number) => void;
 }
 
-type TabType = 'all' | 'missingDetailsDE' | 'missingDetailsEN' | 'missingAnyDetails' | 'lowStock' | 'missingTariff';
+type TabType = 'all' | 'missingDetailsDE' | 'missingDetailsEN' | 'missingAnyDetails' | 'lowStock';
 
 export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
   const [activeTab, setActiveTab] = useState<TabType>('all');
@@ -29,15 +29,13 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
     if (activeTab === 'missingDetailsEN') result = result.filter(r => !r.row[COLUMNS.DETAILS_EN]);
     if (activeTab === 'missingAnyDetails') result = result.filter(r => !r.row[COLUMNS.DETAILS_DE] || !r.row[COLUMNS.DETAILS_EN]);
     if (activeTab === 'lowStock') result = result.filter(r => Number(r.row[COLUMNS.ITEM_AVAILABLE] || 0) <= 0);
-    if (activeTab === 'missingTariff') result = result.filter(r => !r.row[COLUMNS.TARIFF_CODE]);
 
     // Search filter
     if (search) {
       const s = search.toLowerCase();
       result = result.filter(r => 
         String(r.row[COLUMNS.ARTICLE_NO] || '').toLowerCase().includes(s) ||
-        String(r.row[COLUMNS.ARTICLE_NAME] || '').toLowerCase().includes(s) ||
+        String(r.row[COLUMNS.ARTICLE_NAME] || '').toLowerCase().includes(s)
-        String(r.row[COLUMNS.BARCODE] || '').toLowerCase().includes(s)
       );
     }
 
@@ -98,7 +96,6 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
     { id: 'missingDetailsEN', label: 'No Details EN' },
     { id: 'missingAnyDetails', label: 'Missing Details' },
     { id: 'lowStock', label: 'Out of Stock' },
-    { id: 'missingTariff', label: 'No Tariff Code' },
   ];
 
   return (
@@ -125,7 +122,7 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
           <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-slate-500" />
           <input
             type="text"
-            placeholder="Search SKU, Name, Barcode..."
+            placeholder="Search SKU or Name..."
             value={search}
             onChange={e => { setSearch(e.target.value); setPage(1); }}
             className="w-full pl-9 pr-4 py-2 bg-slate-900/50 border border-slate-700 rounded-md text-sm text-white focus:outline-none focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500"
@@ -149,9 +146,6 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
                 {[
                   { col: COLUMNS.ARTICLE_NO, label: 'SKU' },
                   { col: COLUMNS.ARTICLE_NAME, label: 'Name' },
-                  { col: COLUMNS.BARCODE, label: 'Barcode' },
-                  { col: COLUMNS.TARIFF_CODE, label: 'Tariff' },
-                  { col: COLUMNS.COUNTRY_ORIGIN, label: 'Origin' },
                   { col: COLUMNS.CLASSIFICATION, label: 'Class' },
                   { col: COLUMNS.ITEM_AVAILABLE, label: 'Stock' },
                   { col: COLUMNS.DETAILS_DE, label: 'Details DE' },
@@ -180,9 +174,6 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
                   <td className="px-3 py-2 font-medium text-slate-200 max-w-[150px] truncate" title={row[COLUMNS.ARTICLE_NAME]}>
                     {row[COLUMNS.ARTICLE_NAME]}
                   </td>
-                  <td className="px-3 py-2 text-slate-400">{row[COLUMNS.BARCODE] || '—'}</td>
-                  <td className="px-3 py-2 text-slate-400">{row[COLUMNS.TARIFF_CODE] || '—'}</td>
-                  <td className="px-3 py-2 text-slate-400">{row[COLUMNS.COUNTRY_ORIGIN] || '—'}</td>
                   <td className="px-3 py-2">
                     <span className={cn(
                         "px-1.5 py-0.5 rounded-[4px] text-[10px] font-bold border",
@@ -221,7 +212,7 @@ export function ArticleDetails({ data, onEdit }: ArticleDetailsProps) {
               ))}
               {paginatedData.length === 0 && (
                 <tr>
-                  <td colSpan={10} className="px-4 py-8 text-center text-slate-500">
+                  <td colSpan={7} className="px-4 py-8 text-center text-slate-500">
                     No articles found.
                   </td>
                 </tr>

src/components/PricingView.tsx

@@ -10,6 +10,9 @@ import {
   X,
   ChevronDown,
   Edit2,
+  Filter,
+  Check,
+  Search,
 } from 'lucide-react';
 import { cn } from '../lib/utils';
 
@@ -47,6 +50,10 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
   const [editingCell, setEditingCell] = useState<EditingCell | null>(null);
   const [savingCell, setSavingCell] = useState<{ rowIndex: number; colIndex: number } | null>(null);
   const inputRef = useRef<HTMLInputElement>(null);
+  const [lineMultiFilter, setLineMultiFilter] = useState<string[]>([]);
+  const [classificationFilter, setClassificationFilter] = useState<string[]>([]);
+  const [nameColFilter, setNameColFilter] = useState('');
+  const [openFilter, setOpenFilter] = useState<'name' | 'line' | 'classification' | null>(null);
 
   // ── Dynamic column detection ──────────────────────────────────────────────
   const { uvpIdx, srpCols, containerCols } = useMemo(() => {
@@ -128,10 +135,19 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
     return { total: analyzedRows.length, withPricing, withUnits, withAny, allOk };
   }, [analyzedRows]);
 
+  // ── Unique values for column filters ─────────────────────────────────────
+  const uniqueLines = useMemo(() =>
+    Array.from(new Set(data.map(r => String(r[COLUMNS.LINE] || '')))).sort(),
+  [data]);
+
+  const uniqueClassifications = useMemo(() =>
+    Array.from(new Set(data.map(r => String(r[COLUMNS.CLASSIFICATION] || '')))).sort(),
+  [data]);
+
   // ── Filtered rows ─────────────────────────────────────────────────────────
   const filteredRows = useMemo(() => {
     let result = analyzedRows;
-    
+
     // Mode filter
     switch (filterMode) {
       case 'all_errors':   result = analyzedRows.filter(r => r.hasErrors); break;
@@ -139,17 +155,29 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
       case 'units_errors': result = analyzedRows.filter(r => r.unitErrors.length > 0); break;
     }
 
-    // Search filter
+    // Global search (SKU + Name)
     if (search) {
       const s = search.toLowerCase();
-      result = result.filter(r => 
+      result = result.filter(r =>
         String(r.row[COLUMNS.ARTICLE_NO] || '').toLowerCase().includes(s) ||
         String(r.row[COLUMNS.ARTICLE_NAME] || '').toLowerCase().includes(s)
       );
     }
 
+    // Column filters
+    if (nameColFilter) {
+      const s = nameColFilter.toLowerCase();
+      result = result.filter(r => String(r.row[COLUMNS.ARTICLE_NAME] || '').toLowerCase().includes(s));
+    }
+    if (lineMultiFilter.length > 0) {
+      result = result.filter(r => lineMultiFilter.includes(String(r.row[COLUMNS.LINE] || '')));
+    }
+    if (classificationFilter.length > 0) {
+      result = result.filter(r => classificationFilter.includes(String(r.row[COLUMNS.CLASSIFICATION] || '')));
+    }
+
     return result;
-  }, [analyzedRows, filterMode, search]);
+  }, [analyzedRows, filterMode, search, nameColFilter, lineMultiFilter, classificationFilter]);
 
   // ── Inline edit helpers ───────────────────────────────────────────────────
   const startEdit = (rowIndex: number, colIndex: number, currentValue: string) => {
@@ -318,11 +346,75 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
                 <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700 whitespace-nowrap">
                   Art. No.
                 </th>
-                <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700">
+                {/* Article Name with text filter */}
-                  Article Name
+                <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700 group relative">
+                  <div className="flex items-center gap-1">
+                    <span>Article Name</span>
+                    <button
+                      onClick={() => setOpenFilter(openFilter === 'name' ? null : 'name')}
+                      className={cn(
+                        'p-0.5 rounded hover:bg-slate-700 transition-colors',
+                        nameColFilter ? 'text-blue-400 bg-blue-400/10' : 'text-slate-500 opacity-0 group-hover:opacity-100'
+                      )}
+                    >
+                      <Filter className="w-3 h-3" />
+                    </button>
+                  </div>
+                  {openFilter === 'name' && (
+                    <TextFilterPopover
+                      value={nameColFilter}
+                      onChange={setNameColFilter}
+                      onClose={() => setOpenFilter(null)}
+                    />
+                  )}
                 </th>
-                <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700 whitespace-nowrap">
+                {/* Line with multi-select filter */}
-                  Line
+                <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700 whitespace-nowrap group relative">
+                  <div className="flex items-center gap-1">
+                    <span>Line</span>
+                    <button
+                      onClick={() => setOpenFilter(openFilter === 'line' ? null : 'line')}
+                      className={cn(
+                        'p-0.5 rounded hover:bg-slate-700 transition-colors',
+                        lineMultiFilter.length > 0 ? 'text-blue-400 bg-blue-400/10' : 'text-slate-500 opacity-0 group-hover:opacity-100'
+                      )}
+                    >
+                      <Filter className="w-3 h-3" />
+                    </button>
+                  </div>
+                  {openFilter === 'line' && (
+                    <ColumnFilterPopover
+                      uniqueValues={uniqueLines}
+                      selectedValues={lineMultiFilter}
+                      onToggle={val => setLineMultiFilter(prev => prev.includes(val) ? prev.filter(v => v !== val) : [...prev, val])}
+                      onClear={() => { setLineMultiFilter([]); setOpenFilter(null); }}
+                      onClose={() => setOpenFilter(null)}
+                    />
+                  )}
+                </th>
+                {/* Classification with multi-select filter */}
+                <th className="text-left px-3 py-3 text-xs font-semibold text-slate-400 uppercase tracking-wider border-b border-slate-700 whitespace-nowrap group relative">
+                  <div className="flex items-center gap-1">
+                    <span>Classification</span>
+                    <button
+                      onClick={() => setOpenFilter(openFilter === 'classification' ? null : 'classification')}
+                      className={cn(
+                        'p-0.5 rounded hover:bg-slate-700 transition-colors',
+                        classificationFilter.length > 0 ? 'text-blue-400 bg-blue-400/10' : 'text-slate-500 opacity-0 group-hover:opacity-100'
+                      )}
+                    >
+                      <Filter className="w-3 h-3" />
+                    </button>
+                  </div>
+                  {openFilter === 'classification' && (
+                    <ColumnFilterPopover
+                      uniqueValues={uniqueClassifications}
+                      selectedValues={classificationFilter}
+                      onToggle={val => setClassificationFilter(prev => prev.includes(val) ? prev.filter(v => v !== val) : [...prev, val])}
+                      onClear={() => { setClassificationFilter([]); setOpenFilter(null); }}
+                      onClose={() => setOpenFilter(null)}
+                    />
+                  )}
                 </th>
 
                 {/* Editable pricing columns */}
@@ -388,6 +480,20 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
                       {row[COLUMNS.LINE] || '—'}
                     </td>
 
+                    {/* Classification */}
+                    <td className="px-3 py-2.5">
+                      <span className={cn(
+                        'px-2 py-0.5 rounded text-[10px] font-bold border whitespace-nowrap',
+                        String(row[COLUMNS.CLASSIFICATION] || '').toUpperCase().includes('CORE')
+                          ? 'bg-blue-500/10 text-blue-400 border-blue-500/20'
+                          : String(row[COLUMNS.CLASSIFICATION] || '').toUpperCase().includes('OOC')
+                            ? 'bg-amber-500/10 text-amber-500 border-amber-500/20'
+                            : 'bg-slate-700/50 text-slate-400 border-slate-600/50'
+                      )}>
+                        {row[COLUMNS.CLASSIFICATION] || '—'}
+                      </span>
+                    </td>
+
                     {/* Editable pricing cells */}
                     {pricingEditableCols.map(col => {
                       const isEditing = editingCell?.rowIndex === dataIndex && editingCell?.colIndex === col.index;
@@ -513,6 +619,80 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit }
   );
 }
 
+// ── Text filter popover ───────────────────────────────────────────────────────
+function TextFilterPopover({ value, onChange, onClose }: {
+  value: string;
+  onChange: (v: string) => void;
+  onClose: () => void;
+}) {
+  return (
+    <div className="absolute top-full left-0 mt-1 w-56 bg-slate-800 border border-slate-700 rounded-lg shadow-2xl z-50 p-3 flex flex-col gap-3 animate-in fade-in zoom-in-95 duration-100">
+      <div className="relative">
+        <Search className="absolute left-2 top-1/2 -translate-y-1/2 w-3.5 h-3.5 text-slate-500" />
+        <input
+          type="text"
+          placeholder="Search article name…"
+          value={value}
+          onChange={e => onChange(e.target.value)}
+          autoFocus
+          className="w-full bg-slate-900 border border-slate-700 rounded p-1.5 pl-8 text-xs text-white focus:outline-none focus:border-blue-500"
+        />
+      </div>
+      <div className="flex items-center justify-between pt-1 border-t border-slate-700">
+        <button onClick={() => { onChange(''); onClose(); }} className="text-[10px] font-medium text-slate-400 hover:text-white transition-colors">Clear</button>
+        <button onClick={onClose} className="px-3 py-1 bg-blue-600 hover:bg-blue-700 text-white text-[10px] font-bold rounded transition-colors">OK</button>
+      </div>
+    </div>
+  );
+}
+
+// ── Multi-select column filter popover ────────────────────────────────────────
+function ColumnFilterPopover({ uniqueValues, selectedValues, onToggle, onClear, onClose }: {
+  uniqueValues: string[];
+  selectedValues: string[];
+  onToggle: (val: string) => void;
+  onClear: () => void;
+  onClose: () => void;
+}) {
+  const [search, setSearch] = useState('');
+  const filtered = uniqueValues.filter(v => v.toLowerCase().includes(search.toLowerCase()));
+
+  return (
+    <div className="absolute top-full left-0 mt-1 w-56 bg-slate-800 border border-slate-700 rounded-lg shadow-2xl z-50 p-3 flex flex-col gap-3 animate-in fade-in zoom-in-95 duration-100">
+      <div className="relative">
+        <Search className="absolute left-2 top-1/2 -translate-y-1/2 w-3.5 h-3.5 text-slate-500" />
+        <input
+          type="text"
+          placeholder="Filter values…"
+          value={search}
+          onChange={e => setSearch(e.target.value)}
+          autoFocus
+          className="w-full bg-slate-900 border border-slate-700 rounded p-1.5 pl-8 text-xs text-white focus:outline-none focus:border-blue-500"
+        />
+      </div>
+      <div className="max-h-48 overflow-y-auto space-y-0.5">
+        {filtered.map(val => (
+          <label key={val} className="flex items-center gap-2 px-1.5 py-1 hover:bg-slate-700/50 rounded cursor-pointer group">
+            <div className={cn(
+              'w-4 h-4 rounded border flex items-center justify-center shrink-0 transition-colors',
+              selectedValues.includes(val) ? 'bg-blue-600 border-blue-600' : 'border-slate-600 bg-slate-900 group-hover:border-slate-500'
+            )}>
+              {selectedValues.includes(val) && <Check className="w-3 h-3 text-white" />}
+            </div>
+            <input type="checkbox" className="hidden" checked={selectedValues.includes(val)} onChange={() => onToggle(val)} />
+            <span className="text-xs text-slate-300 truncate" title={val}>{val || '(Empty)'}</span>
+          </label>
+        ))}
+        {filtered.length === 0 && <p className="text-[10px] text-slate-500 text-center py-2">No values</p>}
+      </div>
+      <div className="flex items-center justify-between pt-1 border-t border-slate-700">
+        <button onClick={onClear} className="text-[10px] font-medium text-slate-400 hover:text-white transition-colors">Clear</button>
+        <button onClick={onClose} className="px-3 py-1 bg-blue-600 hover:bg-blue-700 text-white text-[10px] font-bold rounded transition-colors">OK</button>
+      </div>
+    </div>
+  );
+}
+
 // ── Stat card ─────────────────────────────────────────────────────────────────
 function StatCard({
   label,