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Question

I need to add submenu with the same styles as the main menu. and arrow logo item near the menu item that shwos that the current item has submenu. Also I need to add the same in the mobile version of menu that it shwos amenu item, with arrow on the right side and when I click on it it opens and show the submenu in the mobile version

your text

<div id="overlay"></div>
<div id="mobile-menu" class="mobile-main-menu">
    <ul>
        <li class="dropdown">
            Projects
            <i class="fa-solid fa-chevron-down"></i>
            <ul class="submenu">
                <li><a href="kenji-x1.html">Kenji X1</a></li>
                <li><a href="geo-lab.html">Geo-Lab</a></li>
                <li><a href="torch.html">Torch</a></li>
            </ul>
        </li>
        <li><a href="documentation.html">Documentation</a></li>
        <li><a href="faq.html">FAQ</a></li>
        <li><a href="blog.html">Blog</a></li>
        <li><a href="team.html">Team</a></li>
        <li><a href="contact-us.html">Contact</a></li>
        <li><a href="shop.html">Shop</a></li>
        <li class="mobile-only"><a href="#">Project 1</a></li>
        <li class="mobile-only"><a href="#">Project 2</a></li>
        <li class="mobile-only"><a href="#">Project 3</a></li>
        <li class="mobile-only"><a href="#">Project 4</a></li>
    </ul>
</div>

<header class="main-header">
    <div class="logo">
        <a href="index.html">
            <img src="images/logo.png" alt="Physalislabs"/>
        </a>
    </div>
    <nav class="desktop-main-menu">
        <ul>
            <li class="has-submenu">
                <a href="#">Projects</a>
                <i class="fa-solid fa-chevron-down"></i>
                <ul class="submenu">
                    <li><a href="kenji-x1.html">Kenji X1</a></li>
                    <li><a href="geo-lab.html">Geo-Lab</a></li>
                    <li><a href="torch.html">Torch</a></li>
                </ul>
            </li>
            <li><a href="documentation.html">Documentation</a></li>
            <li><a href="faq.html">FAQ</a></li>
            <li><a href="blog.html">Blog</a></li>
            <li><a href="team.html">Team</a></li>
            <li><a href="contact-us.html">Contact</a></li>
            <li><a href="shop.html">Shop</a></li>
        </ul>
    </nav>
</header>

<!-- Hamburger Menu -->
<button id="menu-btn" class="hamburger" type="button">
    <span class="hamburger-top"></span>
    <span class="hamburger-middle"></span>
    <span class="hamburger-bottom"></span>
</button>

CSS
/* General styles */
body {
    font-family: 'Familjen Grotesk', sans-serif;
    background: #000;
    color: #fff;
}

header a {
    text-decoration: none;
    color: #fff;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

/* Header Navbar */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 3;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-transform: uppercase;
    height: 100px;
    padding: 0 30px;
    background-color: rgba(0, 0, 0, 0.4);
}

.main-header.hide {
    transform: translateY(-100px);
}

/* Logo */
.logo {
    width: 210px;
    height: auto;
}

.logo img {
    display: block;
    width: 100%;
    height: auto;
}

/* Desktop Menu */
.desktop-main-menu {
    margin-right: 50px;
}

.desktop-main-menu ul {
    display: flex;
}

.desktop-main-menu ul li {
    position: relative;
    margin-right: 10px;
    padding-bottom: 2px;
}

/* Menu item bottom border */
.desktop-main-menu ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: #fff;
    transform: scale(0);
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    transform-origin: right center;
}

.desktop-main-menu ul li a:hover::after {
    transform: scaleX(1);
    transform-origin: left center;
    transition-duration: 0.7s;
}

/* Submenu styles */
.submenu {
    display: none; 
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    padding: 0;
    background: transparent;
    width: max-content;
}

.desktop-main-menu ul li:hover .submenu {
    display: block;
}

.submenu li {
    display: block;
    width: 95px;
}

.submenu li a {
    display: block;
    padding: 10px;
    color: #fff;
}

/* Submenu item bottom border */
.submenu li a::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 1px;
    background: #fff;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.submenu li a:hover::after {
    transform: scaleX(1);
}

/* Styles for the submenu */
.has-submenu .submenu {
    display: none;
    position: absolute;
    top: calc(100% - 5px); 
    left: -5px; 
    padding: 0;
    background: transparent;
    width: max-content;
}

.has-submenu:hover .submenu {
    display: block;
}

.submenu li:first-child {
    margin-top: 7px;
}

/* Arrow styles */
.has-submenu > i {
    font-size: 10px;
    pointer-events: none;
    user-select: none;
    position: absolute;
    color: hsl(0, 0%, 100%);
    top: 50%;
    right: 5px;
    transform: translateY(-50%);
}

/* Mobile Menu */
#mobile-menu .has-submenu > i {
    margin-left: 10px;
}

#mobile-menu .submenu {
    display: none;
    padding-left: 15px;
}

#mobile-menu .has-submenu.open .submenu {
    display: block;
}

/* Hamburger Menu */
.hamburger {
    position: fixed;
    top: 40px;
    right: 20px;
    z-index: 10;
    cursor: pointer;
    width: 20px;
    height: 20px;
    background: none;
    border: none;
}

.hamburger-top, 
.hamburger-middle, 
.hamburger-bottom {
    position: absolute;
    width: 20px;
    height: 2px;
    top: 0;
    left: 0;
    background: #fff;
    transition: all 0.5s;
}

    /* Hamburger Menu top, middle, bottom lines positioning*/
.hamburger-middle {
    transform: translateY(5px);
}

.hamburger-bottom {
    transform: translateY(10px);
}

    /* Transition hamburger Menu to X when open */
.open {
    transform: rotate(90deg);
}

.open .hamburger-top {
    transform: rotate(45deg) translateY(6px) translateX(6px);
}

.open .hamburger-middle {
    display: none;
}

.open .hamburger-bottom {
    transform: rotate(-45deg) translateY(6px) translateX(-6px);
}

/* Stop body scroll */
.stop-scrolling {
    overflow: hidden;
}
        /* Hide mobile main menu items */
.mobile-only {
    display: none;
}
        /* Mobile menu */
.mobile-main-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 350px;
    height: 100%;
    background: #000;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform 0.6s cubic-bezier(0.19,1,0.22,1);
}
        /* Bring mobile menu from right */
.show-menu {
    transform: translateX(0);
}

.mobile-main-menu ul {
    display: flex;
    flex-direction: column;
    align-items: end;
    justify-content: center;
    padding: 50px;
    width: 100%;
}

.mobile-main-menu ul li {
    margin-bottom: 20px;
    font-size: 18px;
    text-transform: uppercase;
    border-bottom: 1px #555 dotted;
    width: 100%;
    text-align: right;
    padding-bottom: 8px;
}

.mobile-main-menu ul li a {
    color: #fff;
    transition: color 0.6s;
}

.mobile-main-menu ul li a:hover {
    color: #aaa;
}

/* Mobile Menu Dropdown */
.mobile-main-menu .has-submenu > i {
    position: absolute;
    right: 30px; /* Adjust as needed */
}

.mobile-main-menu .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: transparent;
    width: 100%;
}

.mobile-main-menu .has-submenu.open .submenu {
    display: block;
}


JS
document.addEventListener('DOMContentLoaded', function() {
  const btn = document.getElementById('menu-btn');
  const overlay = document.getElementById('overlay');
  const menu = document.getElementById('mobile-menu');
  const counters = document.querySelectorAll('.counter');
  let scrollStarted = false;
  btn.addEventListener('click', navToggle);
  document.addEventListener('scroll', scrollPage);

  function navToggle(){
    btn.classList.toggle('open');
    overlay.classList.toggle('overlay-show');
    document.body.classList.toggle('stop-scrolling');
    menu.classList.toggle('show-menu');
  }

  function scrollPage(){
    const scrollPos = window.scrollY;
     // console.log(scrollPos);
    if(scrollPos > 100 && !scrollStarted){
      countUp();
      scrollStarted = true;
    }else if (scrollPos < 100 && scrollStarted){
      reset();
      scrollStarted = false;
    }
  }

  function countUp() {
  counters.forEach((counter) => {
    counter.innerText = '0';
    const updateCounter = () => {
      //Get count target
      const target = +counter.getAttribute('data-target');
      //Get current counter value
      const c = +counter.innerText;

      //create an increment
      const increment = target / 100;
      // If counter is less than target, add increment
      if(c < target){
        //Round up and set counter value
        counter.innerText = `${Math.ceil(c + increment)}`;
          setTimeout(updateCounter, 75);
      } else {
          counter.innerText = target;
      }
    };
    updateCounter();
  });
}

function reset(){
  counters.forEach((counter) => (counter.innerHTML = '0'));
}

                    /* menu hide while scrolling */
  let lastScroll = 0;
      const defaultOffset = 200;
      const mobileMenu = document.getElementById('mobile-menu');
      const scrollPosition = () => window.pageYOffset || document.documentElement.scrollTop;
      const containHide = () => mobileMenu.classList.contains('hide');
      const header = document.querySelector('.main-header');

      window.addEventListener('scroll', () => {
        if (scrollPosition() > lastScroll && !containHide() && scrollPosition() > defaultOffset) {
          // Scroll down
          mobileMenu.classList.add('hide');
          header.classList.add('hide'); // Optionally hide the main header as well
          console.log('down');
        } else if (scrollPosition() < lastScroll && containHide()) {
          // Scroll up`your text`
          console.log('up');
          mobileMenu.classList.remove('hide');
          header.classList.remove('hide'); // Optionally show the main header when scrolling up
        }
        lastScroll = scrollPosition();
  });

         });

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Danh mục

How can I add a submenu and arrow logo to this existing menu with same styles