components/ui/button.tsx

import * as React from 'react'
import { cn } from '@/lib/utils'

export interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'default' | 'outline' | 'ghost'
  size?: 'default' | 'sm' | 'lg'
}

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant = 'default', size = 'default', ...props }, ref) => {
    return (
      <button
        className={cn(
          'inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
          {
            'bg-primary text-primary-foreground hover:bg-primary/90': variant === 'default',
            'border border-input bg-background hover:bg-accent hover:text-accent-foreground': variant === 'outline',
            'hover:bg-accent hover:text-accent-foreground': variant === 'ghost',
          },
          {
            'h-10 px-4 py-2': size === 'default',
            'h-9 rounded-md px-3': size === 'sm',
            'h-11 rounded-md px-8': size === 'lg',
          },
          className
        )}
        ref={ref}
        {...props}
      />
    )
  }
)
Button.displayName = 'Button'

export { Button }