Feedback: show the full declension table, not one row

Every answer card now renders the complete 4×4 declension grid instead
of a single case row. The correct cell is highlighted green; on a wrong
answer, the cell matching what you typed is highlighted red, so you see
both your pick and the right one in context.

- FillFeedback (articles + possessives): full table, correct + wrong
  highlighting within the noun's gender column.
- ChunkFeedback + ContractionFeedback: contraction questions now show
  the definite-article table too, not just the fused answer.
- PronounFeedback: correct cell green, your wrong pick red.

src/App.jsx

@@ -894,18 +894,51 @@ function PaywallScreen({ message, onCheckout, onBack }) {
 // FEEDBACK COMPONENTS
 // ═══════════════════════════════════════════
 
+const FB_GENDERS = ['masculine','feminine','neuter','plural'];
+const FB_CASES = ['nominative','accusative','dative','genitive'];
+const normAns = s => (s || '').trim().toLowerCase();
+
+// A full declension grid (all 4 cases × 4 genders) for answer feedback.
+// The correct cell is highlighted green; when the answer was wrong, the
+// cell(s) matching the user's input are highlighted red — so you see both
+// your pick and the right one in the whole table, not just one row.
+// focusG (optional) keeps one gender column sharp and greys the rest.
+function FeedbackTable({ valueFor, isCorrect, isWrong, focusG }) {
+  return (
+    <table style={S.stripTbl}>
+      <thead><tr>
+        <th style={{...S.stripH, textAlign:'left'}}></th>
+        {FB_GENDERS.map(g => (
+          <th key={g} style={{...S.stripH, color: GENDER_C[g], opacity: (!focusG || g === focusG) ? 1 : 0.5}}>{g.slice(0,4)}.</th>
+        ))}
+      </tr></thead>
+      <tbody>
+        {FB_CASES.map(c => (
+          <tr key={c}>
+            <td style={{...S.stripD, textAlign:'left', fontSize:11, fontWeight:600, color: CASE_C[c]}}>{CL[c]}</td>
+            {FB_GENDERS.map(g => {
+              const val = valueFor(g, c);
+              const correct = isCorrect(g, c, val);
+              const wrong = !correct && !!isWrong && isWrong(g, c, val);
+              const bg = correct ? GREEN + '22' : wrong ? RED + '22' : 'transparent';
+              const color = correct ? GREEN : wrong ? RED : (focusG && g !== focusG ? '#c8c8c8' : '#555');
+              return (
+                <td key={g} style={{...S.stripD, background:bg, borderRadius:4,
+                  fontWeight:(correct||wrong)?700:400, color, fontSize:(correct||wrong)?14:13}}>{val}</td>
+              );
+            })}
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  );
+}
+
 function FillFeedback({ q, inp, ok }) {
-  const genders = ['masculine','feminine','neuter','plural'];
-  const stripCells = genders.map(g => {
-    if (q.type === 'article') {
-      const tbl = q.artType === 'indefinite' ? INDEF : DEF;
-      return tbl[g][q.cas];
-    }
-    return combinePoss(q.stem, POSS_ENDINGS[g][q.cas]);
-  });
-  const stripLabel = q.type === 'article'
-    ? (q.artType === 'indefinite' ? 'ein…' : 'der/die')
-    : `${q.stem}-`;
+  const valueFor = q.type === 'article'
+    ? (g, c) => (q.artType === 'indefinite' ? INDEF : DEF)[g][c]
+    : (g, c) => combinePoss(q.stem, POSS_ENDINGS[g][c]);
+  const wrong = normAns(inp);
 
   return (
     <div style={{...S.feedback, animation:'fadeUp 0.2s ease-out'}}>
@@ -918,24 +951,12 @@ function FillFeedback({ q, inp, ok }) {
           {q.noun.w} is <span style={{color:GENDER_C[q.noun.g]}}>{q.noun.g}</span>. <span style={{color:CASE_C[q.cas]}}>{CL[q.cas]}</span> + {q.noun.g} = <strong style={{color:'#1a1a1a'}}>{q.ans}</strong>
         </div>
       )}
-      <table style={S.stripTbl}>
-        <thead><tr>
-          <th style={{...S.stripH, textAlign:'left', fontWeight:600, color: CASE_C[q.cas]}}>{CL[q.cas]}</th>
-          {genders.map(g => <th key={g} style={{...S.stripH, color:GENDER_C[g]}}>{g.slice(0,4)}.</th>)}
-        </tr></thead>
-        <tbody><tr>
-          <td style={{...S.stripD, textAlign:'left', color:'#aaa', fontSize:11}}>{stripLabel}</td>
-          {genders.map((g, i) => {
-            const hl = g === q.noun.g;
-            return <td key={g} style={{
-              ...S.stripD, fontWeight: hl ? 700 : 400,
-              color: hl ? '#1a1a1a' : '#bbb',
-              background: hl ? '#f3f3f3' : 'transparent',
-              borderRadius: 4, fontSize: hl ? 15 : 13,
-            }}>{stripCells[i]}</td>;
-          })}
-        </tr></tbody>
-      </table>
+      <FeedbackTable
+        valueFor={valueFor}
+        focusG={q.noun.g}
+        isCorrect={(g, c) => g === q.noun.g && c === q.cas}
+        isWrong={ok ? null : (g, c, val) => g === q.noun.g && normAns(val) === wrong}
+      />
     </div>
   );
 }
@@ -1002,6 +1023,15 @@ function ChunkFeedback({ q, inp, ok }) {
           ? 'Preferred — these fuse, so use the contraction in speech and writing.'
           : <><strong>{article}</strong> doesn’t fuse with „{q.prepKey}" — keep them as two words.</>}
       </div>
+      <div style={{marginTop:10, fontSize:11, color:'#aaa', marginBottom:2}}>
+        Definite article by case — <span style={{color:GENDER_C[q.noun.g]}}>{DEF[q.noun.g].nominative} {q.noun.w}</span>
+      </div>
+      <FeedbackTable
+        valueFor={(g, c) => DEF[g][c]}
+        focusG={q.noun.g}
+        isCorrect={(g, c) => g === q.noun.g && c === q.cas}
+        isWrong={null}
+      />
     </div>
   );
 }
@@ -1022,6 +1052,15 @@ function ContractionFeedback({ q, inp, ok }) {
           ? 'Preferred — use this contraction in both speech and writing.'
           : 'Informal — common when speaking, but the two-word form is more usual in writing.'}
       </div>
+      <div style={{marginTop:10, fontSize:11, color:'#aaa', marginBottom:2}}>
+        Where „{q.art}" sits in the definite-article table
+      </div>
+      <FeedbackTable
+        valueFor={(g, c) => DEF[g][c]}
+        focusG={null}
+        isCorrect={(g, c, val) => normAns(val) === normAns(q.art)}
+        isWrong={null}
+      />
     </div>
   );
 }
@@ -1046,13 +1085,15 @@ function PronounFeedback({ q, inp, ok }) {
         <tbody><tr>
           <td style={{...S.stripD, textAlign:'left', color:'#aaa', fontSize:11}}>{q.pron.en}</td>
           {cases.map(c => {
-            const hl = c === q.cas;
+            const val = q.pron[keys[c]];
+            const correct = c === q.cas;
+            const wrong = !ok && !correct && normAns(val) === normAns(inp);
             return <td key={c} style={{
-              ...S.stripD, fontWeight: hl ? 700 : 400,
-              color: hl ? '#1a1a1a' : '#bbb',
-              background: hl ? '#f3f3f3' : 'transparent',
-              borderRadius: 4, fontSize: hl ? 15 : 13,
-            }}>{q.pron[keys[c]]}</td>;
+              ...S.stripD, fontWeight: (correct || wrong) ? 700 : 400,
+              color: correct ? GREEN : wrong ? RED : '#bbb',
+              background: correct ? GREEN + '22' : wrong ? RED + '22' : 'transparent',
+              borderRadius: 4, fontSize: (correct || wrong) ? 15 : 13,
+            }}>{val}</td>;
           })}
         </tr></tbody>
       </table>