routstr-core/ui/components/theme-toggle.tsx

'use client';

import * as React from 'react';
import { Moon, Sun } from 'lucide-react';
import { useTheme } from 'next-themes';

import { Button } from '@/components/ui/button';

export function ThemeToggle() {
  const { setTheme, theme } = useTheme();

  return (
    <Button
      variant='ghost'
      size='sm'
      onClick={() => setTheme(theme === 'light' ? 'dark' : 'light')}
      className='gap-2'
    >
      <Sun className='h-4 w-4 scale-100 rotate-0 transition-all dark:scale-0 dark:-rotate-90' />
      <Moon className='h-4 w-4 scale-0 rotate-90 transition-all dark:scale-100 dark:rotate-0' />
      <span className='sr-only'>Toggle theme</span>
    </Button>
  );
}