<nav class="hidden md:flex items-center gap-6">
    <a href="#" class="font-medium hover:text-primary transition-colors">首页</a>
    <a href="#" class="font-medium hover:text-primary transition-colors">商品分类</a>
    <a href="#" class="font-medium hover:text-primary transition-colors">限时优惠</a>
    <a href="#" class="font-medium hover:text-primary transition-colors">关于我们</a>
  </nav>
  <div class="hidden md:flex items-center bg-white rounded-full shadow-sm px-3 py-1 w-64">
    <i class="fa fa-search text-gray-400"></i>
    <input type="text" placeholder="搜索商品..." class="w-full px-2 py-1 outline-none">
  </div>
  <div class="flex items-center gap-4">
    <a href="#" class="relative">
      <i class="fa fa-shopping-cart text-xl hover:text-primary transition-colors"></i>
      <span class="absolute -top-2 -right-2 bg-secondary text-white text-xs rounded-full w-5 h-5 flex items-center justify-center">3</span>
    </a>
    <a href="#" class="hidden md:block"><i class="fa fa-user text-xl hover:text-primary transition-colors"></i></a>
    <button class="md:hidden text-xl" id="menuBtn"><i class="fa fa-bars"></i></button>
  </div>
</div>
<div id="mobileMenu" class="hidden md:hidden bg-white shadow-lg absolute w-full">
  <div class="container mx-auto px-4 py-3 flex flex-col gap-3">
    <a href="#" class="font-medium hover:text-primary transition-colors py-2">首页</a>
    <a href="#" class="font-medium hover:text-primary transition-colors py-2">商品分类</a>
    <a href="#" class="font-medium hover:text-primary transition-colors py-2">限时优惠</a>
    <a href="#" class="font-medium hover:text-primary transition-colors py-2">关于我们</a>
    <div class="flex items-center bg-gray-100 rounded-full px-3 py-1">
      <i class="fa fa-search text-gray-400"></i>
      <input type="text" placeholder="搜索商品..." class="w-full px-2 py-1 outline-none bg-transparent">
    </div>
    <a href="#" class="font-medium hover:text-primary transition-colors py-2">登录/注册</a>
  </div>
</div>