Minimalist Navigation Bar

<nav class="bg-white dark:bg-gray-800 shadow-md">
  <div class="max-w-screen-xl mx-auto px-4 sm:px-6 md:px-8">
    <div class="flex justify-between h-16">
      <div class="flex">
        <div class="flex-shrink-0">
          <img class="h-8" src="https://picsum.photos/40/40" alt="Logo">
        </div>
        <div class="hidden md:flex md:space-x-8">
          <a href="#" class="text-gray-900 dark:text-gray-100 hover:underline">Home</a>
          <a href="#" class="text-gray-900 dark:text-gray-100 hover:underline">About</a>
          <a href="#" class="text-gray-900 dark:text-gray-100 hover:underline">Services</a>
          <a href="#" class="text-gray-900 dark:text-gray-100 hover:underline">Contact</a>
        </div>
      </div>
      <div class="flex items-center">
        <img class="h-10 w-10 rounded-full" src="https://randomuser.me/api/portraits/men/1.jpg" alt="User Avatar">
      </div>
    </div>
  </div>
</nav>

<!-- Mobile menu button -->
<div class="md:hidden">
  <button class="flex items-center p-2 rounded-md text-gray-700 dark:text-gray-200 hover:bg-gray-200 dark:hover:bg-gray-700 focus:outline-none" aria-label="Toggle Navigation">
    <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-7 6h7" />
    </svg>
  </button>
</div>

<!-- Mobile Menu -->
<div class="md:hidden">
  <div class="bg-white dark:bg-gray-800 shadow-md px-4 py-2 space-y-2">
    <a href="#" class="block text-gray-900 dark:text-gray-100 hover:underline">Home</a>
    <a href="#" class="block text-gray-900 dark:text-gray-100 hover:underline">About</a>
    <a href="#" class="block text-gray-900 dark:text-gray-100 hover:underline">Services</a>
    <a href="#" class="block text-gray-900 dark:text-gray-100 hover:underline">Contact</a>
  </div>
</div>