game-marathon/frontend/src/components/ui/Button.tsx

import { forwardRef, type ButtonHTMLAttributes } from 'react'
import { clsx } from 'clsx'
import { Loader2 } from 'lucide-react'

interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'danger' | 'ghost'
  size?: 'sm' | 'md' | 'lg'
  isLoading?: boolean
}

export const Button = forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant = 'primary', size = 'md', isLoading, children, disabled, ...props }, ref) => {
    return (
      <button
        ref={ref}
        disabled={disabled || isLoading}
        className={clsx(
          'inline-flex items-center justify-center font-medium rounded-lg transition-all duration-200',
          'disabled:opacity-50 disabled:cursor-not-allowed',
          {
            'bg-neon-500 hover:bg-neon-400 text-dark-900 font-semibold shadow-[0_0_8px_rgba(34,211,238,0.25)] hover:shadow-[0_0_14px_rgba(34,211,238,0.4)]': variant === 'primary',
            'bg-dark-600 hover:bg-dark-500 text-white border border-dark-500': variant === 'secondary',
            'bg-red-600 hover:bg-red-700 text-white': variant === 'danger',
            'bg-transparent hover:bg-dark-700 text-gray-300 hover:text-white': variant === 'ghost',
            'px-3 py-1.5 text-sm': size === 'sm',
            'px-4 py-2 text-base': size === 'md',
            'px-6 py-3 text-lg': size === 'lg',
          },
          className
        )}
        {...props}
      >
        {isLoading && <Loader2 className="w-4 h-4 mr-2 animate-spin" />}
        {children}
      </button>
    )
  }
)

Button.displayName = 'Button'