Match sort button size to filters, more spacing above results count

- Sort button: remove fontSize override so it inherits Button small size
- Results count: mt 2 → 3 for more breathing room below controls

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/pages/VenueStep/VenueStep.tsx

@@ -492,7 +492,7 @@ export const VenueStep: React.FC<VenueStepProps> = ({
               startIcon={<SwapVertIcon sx={{ fontSize: 16 }} />}
               onClick={(e) => setSortAnchor(e.currentTarget)}
               aria-haspopup="listbox"
-              sx={{ fontSize: '0.75rem', textTransform: 'none' }}
+              sx={{ textTransform: 'none' }}
             >
               {SORT_OPTIONS.find((o) => o.value === sortBy)?.label ?? 'Sort'}
             </Button>
@@ -524,7 +524,7 @@ export const VenueStep: React.FC<VenueStepProps> = ({
         <Typography
           variant="caption"
           color="text.secondary"
-          sx={{ mt: 2, display: 'block' }}
+          sx={{ mt: 3, display: 'block' }}
           aria-live="polite"
         >
           {venues.length} venue{venues.length !== 1 ? 's' : ''}