style: improve light theme border and input visibility

components/figlet/FontPreview.tsx

@@ -57,9 +57,9 @@ export function FontPreview({ text, font, isLoading, onCopy, onDownload, onShare
   };
   return (
     <Card className={cn('relative', className)}>
-      <CardHeader className="flex flex-row items-center justify-between flex-wrap gap-2 space-y-0">
+      <CardHeader className="flex flex-row items-center justify-between flex-wrap gap-2">
         <div className="flex items-center gap-2">
-          <CardTitle className="text-sm font-medium">Preview</CardTitle>
+          <CardTitle>Preview</CardTitle>
           {font && (
             <span className="text-xs px-2 py-0.5 bg-primary/10 text-primary rounded-md font-mono">
               {font}