const burgerButton = document.querySelector(".mb-header__menu-btn");
const headerNavMobile = document.querySelector(".mb-header-nav");
const navCloseButton = document.querySelector(".mb-header-nav__close-btn");
const headerNavListItems = document.querySelectorAll(
  ".mb-header-nav-list__item"
);
const navigationButton = document.querySelector('.header-nav-list__nav-btn')


if(navigationButton) {
  navigationButton.addEventListener('click', () => {
    headerNavMobile.style.opacity = "0";
    headerNavMobile.classList.add("active");
    window.requestAnimationFrame(() => {
      headerNavMobile.style.opacity = "1";
      headerNavListItems.forEach((item, i) => {
        setTimeout(() => {
          item.style.opacity = 1;
        }, 90 * i);
      });
    });
    function closeHeaderNavHandler() {
      headerNavMobile.style.opacity = "0";
      setTimeout(() => {
        headerNavListItems.forEach(item => {
          item.style.opacity = 0;
        });
        headerNavMobile.classList.remove("active");
        navCloseButton.removeEventListener("click", closeHeaderNavHandler);
      }, 300);
    }
    navCloseButton.addEventListener("click", closeHeaderNavHandler);
  })
}

if (burgerButton) {
  burgerButton.addEventListener("click", () => {
    headerNavMobile.style.opacity = "0";
    headerNavMobile.classList.add("active");
    window.requestAnimationFrame(() => {
      headerNavMobile.style.opacity = "1";
      headerNavListItems.forEach((item, i) => {
        setTimeout(() => {
          item.style.opacity = 1;
        }, 90 * i);
      });
    });
    function closeHeaderNavHandler() {
      headerNavMobile.style.opacity = "0";
      setTimeout(() => {
        headerNavListItems.forEach(item => {
          item.style.opacity = 0;
        });
        headerNavMobile.classList.remove("active");
        navCloseButton.removeEventListener("click", closeHeaderNavHandler);
      }, 300);
    }
    navCloseButton.addEventListener("click", closeHeaderNavHandler);
  });
}