document.addEventListener('DOMContentLoaded', function(){
  const themeToggle = document.getElementById('themeToggle');
  const printBtn = document.getElementById('printBtn');

  if(themeToggle){
    themeToggle.addEventListener('click', ()=>{
      document.body.classList.toggle('dark');
    });
  }

  if(printBtn){
    printBtn.addEventListener('click', ()=>{
      window.print();
    });
  }
});