phd-advisor-frontend/src/components/ThemeToggle.js

import React from 'react';
import { Sun, Moon } from 'lucide-react';
import { useTheme } from '../contexts/ThemeContext';

const ThemeToggle = () => {
  const { theme, toggleTheme } = useTheme();

  return (
    <button
      onClick={toggleTheme}
      className="theme-toggle"
      aria-label={`Switch to ${theme === 'light' ? 'dark' : 'light'} theme`}
    >
      {theme === 'light' ? (
        <Moon className="theme-icon" />
      ) : (
        <Sun className="theme-icon" />
      )}
    </button>
  );
};

export default ThemeToggle;