import { useState, useEffect } from 'react'

export default function ScrollToTop() {
  const [isVisible, setIsVisible] = useState(false)

  useEffect(() => {
    const handleScroll = () => {
      setIsVisible(window.scrollY > 200)
    }
    window.addEventListener('scroll', handleScroll)
    return () => window.removeEventListener('scroll', handleScroll)
  }, [])

  const scrollToTop = () => {
    window.scrollTo({
      top: 0,
      behavior: 'smooth',
    })
  }

  return (
    <button
      onClick={scrollToTop}
      className={`fixed bottom-4 right-4 w-10 h-10 bg-secondary hover:bg-secondary/80 text-white rounded shadow-lg flex items-center justify-center transition-all duration-300 z-50 ${
        isVisible ? 'opacity-100 translate-y-0' : 'opacity-0 translate-y-4 pointer-events-none'
      }`}
      aria-label="Back to top"
    >
      <span className="fa fa-angle-up" />
    </button>
  )
}
