PairWordCard: two-step select then confirm flow

Tapping an option now highlights it (warm gold border); a
"Bestätigen" button activates once something is selected.
Answer is only evaluated on confirmation, not on tap.

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

src/components/PairCards.css

@@ -337,8 +337,9 @@
   border-color: #C8956A;
 }
 .pair-option-btn:active:not(:disabled) { transform: scale(0.95); }
-.pair-option-btn.correct { background: #3D7055; color: #fff; border-color: #3D7055; }
-.pair-option-btn.wrong   { background: #A84040; color: #fff; border-color: #A84040; }
+.pair-option-btn.selected { background: #FFF0DC; border-color: #C4A85A; color: #5C3D22; }
+.pair-option-btn.correct  { background: #3D7055; color: #fff; border-color: #3D7055; }
+.pair-option-btn.wrong    { background: #A84040; color: #fff; border-color: #A84040; }
 .pair-option-btn:disabled { cursor: default; }
 
 /* ── Feedback ── */

src/components/PairWordCard.jsx

@@ -84,7 +84,8 @@ function shuffle(arr) {
 }
 
 export default function PairWordCard({ card, onComplete }) {
-  const [picked,     setPicked]     = useState(null)
+  const [selected,   setSelected]   = useState(null)   // chosen but not yet confirmed
+  const [picked,     setPicked]     = useState(null)   // confirmed answer
   const [activeChip, setActiveChip] = useState(null)
 
   const lang   = card.lang || 'de'
@@ -111,12 +112,17 @@ export default function PairWordCard({ card, onComplete }) {
     setActiveChip(prev => prev?.id === id ? null : { id, ...entry })
   }
 
-  function handlePick(opt) {
+  function handleSelect(opt) {
     if (picked) return
+    setSelected(prev => prev?.id === opt.id ? null : opt)
+  }
+
+  function handleConfirm() {
+    if (!selected || picked) return
     setActiveChip(null)
-    setPicked(opt)
-    const r = opt.correct ? 'correct' : 'wrong'
-    if (opt.correct) triggerConfetti()
+    setPicked(selected)
+    const r = selected.correct ? 'correct' : 'wrong'
+    if (selected.correct) triggerConfetti()
     setTimeout(() => onComplete(r), 900)
   }
 
@@ -159,9 +165,11 @@ export default function PairWordCard({ card, onComplete }) {
             if (picked) {
               if (opt.id === picked.id) cls += opt.correct ? ' correct' : ' wrong'
               else if (opt.correct)     cls += ' correct'
+            } else if (selected?.id === opt.id) {
+              cls += ' selected'
             }
             return (
-              <button key={opt.id} className={cls} onClick={() => handlePick(opt)} disabled={!!picked}>
+              <button key={opt.id} className={cls} onClick={() => handleSelect(opt)} disabled={!!picked}>
                 {label}
                 {picked && hint2 && opt.correct && (
                   <span style={{ display: 'block', fontSize: '11px', opacity: 0.85, marginTop: 2 }}>
@@ -181,6 +189,18 @@ export default function PairWordCard({ card, onComplete }) {
             }
           </p>
         )}
+
+        {!picked && (
+          <div className="pair-btn-row" style={{ marginTop: 12 }}>
+            <button
+              className={`pair-btn ${selected ? 'pair-btn-primary' : 'pair-btn-locked'}`}
+              onClick={handleConfirm}
+              disabled={!selected}
+            >
+              Bestätigen
+            </button>
+          </div>
+        )}
       </div>
     </div>
   )