Shadcn Guideline: Components — Use size variants consistently. Description: Apply size prop for consistent sizing across components. Do: size="sm" size="lg" for sizing. Don't: Mix size classes inconsistently. Good Example: <Button size="lg">. Bad Example: <Button className="text-lg px-8 py-4">. Severity: Medium. Docs: https://ui.shadcn.com/docs/components/button.