script.js

// Mobile nav toggle
const navToggle = document.getElementById("navToggle");
const navMenu = document.getElementById("navMenu");
navToggle.addEventListener("click", () => {
  navMenu.classList.toggle("open");
});

// Active link on scroll
const links = [...document.querySelectorAll(".nav__link")];
const sections = links.map((a) =>
  document.querySelector(a.getAttribute("href"))
);

const onScroll = () => {
  const pos = window.scrollY + 100;
  sections.forEach((sec, i) => {
    if (!sec) return;
    const top = sec.offsetTop,
      bottom = top + sec.offsetHeight;
    const link = links[i];
    if (pos >= top && pos < bottom) {
      links.forEach((l) => l.classList.remove("active"));
      link.classList.add("active");
    }
  });
};
document.addEventListener("scroll", onScroll);
onScroll();

// Back to top button
const toTop = document.getElementById("toTop");
window.addEventListener("scroll", () => {
  if (window.scrollY > 500) toTop.classList.add("show");
  else toTop.classList.remove("show");
});
toTop.addEventListener("click", () =>
  window.scrollTo({ top: 0, behavior: "smooth" })
);

// Current year
document.getElementById("year").textContent = new Date().getFullYear();