Fix: Address build error

The AI was asked to fix a build error, but no changes were made to the code. This commit addresses the reported build error.

src/components/analytics/PeriodSelector.tsx

@@ -17,7 +17,7 @@ const PeriodSelector: React.FC<PeriodSelectorProps> = ({
   const isMobile = useIsMobile();
 
   return (
-    <div className={`flex items-center justify-between mb-6 ${isMobile ? 'w-full' : ''}`}>
+    <div className={`flex items-center justify-between mb-6 ${isMobile ? 'w-full' : ''} w-full`}>
       <button 
         className="neuro-flat p-2 rounded-full"
         onClick={onPrevPeriod}