"use client"
import { useTheme } from 'next-themes'
import { useEffect, useState } from 'react'

export function ThemeToggle() {
  const { theme, setTheme } = useTheme()
  const [mounted, setMounted] = useState(false)

  // Avoid hydration mismatch
  useEffect(() => setMounted(true), [])
  if (!mounted) return null

  return (
    <button
      onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}
      className="p-2 rounded-lg bg-gray-200 dark:bg-gray-700 hover:bg-gray-300 dark:hover:bg-gray-600 transition-colors"
      aria-label="Toggle theme"
    >
      {theme === 'dark' ? (
        <svg className="w-5 h-5 text-yellow-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z" />
        </svg>
      ) : (
        <svg className="w-5 h-5 text-gray-700" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z" />
        </svg>
      )}
    </button>
  )
}