Fix Subtraction Game bugs

Update background color transition to fade instead of blink.
Change the minimum value for n to 2.
Debug and fix issues with the reset functionality not fully clearing the game state.

src/components/BulgarianSolitaire.tsx

@@ -302,6 +302,9 @@ const BulgarianSolitaire: React.FC<BulgarianSolitaireProps> = ({ showSocialShare
     pauseRef.current = false;
     setIsPaused(false);
     setIsPlaying(false);
+    setDraggedBox(null);
+    setLastUsedColumn(null);
+    setSelectedBoxForMove(null);
     
     const newBoxes: Box[] = [];
     for (let i = 0; i < totalBoxes; i++) {
@@ -365,7 +368,7 @@ const BulgarianSolitaire: React.FC<BulgarianSolitaireProps> = ({ showSocialShare
           <Slider
             value={[n]}
             onValueChange={(value) => setN(value[0])}
-            min={3}
+            min={2}
             max={45}
             step={1}
             className="w-32"
@@ -440,7 +443,7 @@ const BulgarianSolitaire: React.FC<BulgarianSolitaireProps> = ({ showSocialShare
                     highlightedBoxes.has(boxId) 
                       ? 'bg-red-500 text-white shadow-lg scale-110' 
                       : 'bg-primary text-primary-foreground hover:bg-primary/80'
-                  } ${isAnimating && highlightedBoxes.has(boxId) ? 'animate-pulse' : ''}`}
+                  } ${isAnimating && highlightedBoxes.has(boxId) ? 'animate-[fade-red_1.6s_ease-in-out_infinite]' : ''}`}
                   title="Drag to move or double-click to move to last-used column"
                 >
                 </div>