Organic Grayscale Hamburger Menu

<div class="bg-gray-50 dark:bg-gray-900 border-b border-gray-200 dark:border-gray-800">
  <nav class="container mx-auto px-4 py-3 flex items-center justify-between">
    <a href="#" class="flex-shrink-0 text-gray-900 dark:text-gray-50 text-2xl font-bold font-serif italic tracking-wide">
      FlowDocs
    </a>

    <!-- Mobile Hamburger Button -->
    <button class="lg:hidden p-2 rounded-md focus:outline-none focus:ring-2 focus:ring-gray-400 dark:focus:ring-gray-600 group" aria-label="Toggle menu">
      <div class="space-y-2">
        <span class="block h-0.5 w-8 bg-gray-700 dark:bg-gray-300 transform transition duration-300 ease-in-out group-focus:translate-y-2 group-focus:rotate-45"></span>
        <span class="block h-0.5 w-8 bg-gray-700 dark:bg-gray-300 transition duration-300 ease-in-out group-focus:opacity-0"></span>
        <span class="block h-0.5 w-8 bg-gray-700 dark:bg-gray-300 transform transition duration-300 ease-in-out group-focus:-translate-y-2 group-focus:-rotate-45"></span>
      </div>
    </button>

    <!-- Desktop Menu Items -->
    <div class="hidden lg:flex items-center space-x-8">
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100 transition duration-200 ease-in-out font-medium text-lg">
        Documentation
      </a>
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100 transition duration-200 ease-in-out font-medium text-lg">
        Guides
      </a>
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100 transition duration-200 ease-in-out font-medium text-lg">
        API
      </a>
      <a href="#" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100 transition duration-200 ease-in-out font-medium text-lg">
        Community
      </a>
      <a href="#" class="py-2 px-4 rounded-full bg-gray-800 text-gray-50 hover:bg-gray-900 dark:bg-gray-200 dark:text-gray-800 dark:hover:bg-gray-50 transition duration-200 ease-in-out text-lg font-semibold shadow-md">
        Get Started
      </a>
    </div>
  </nav>

  <!-- Mobile Menu (Invisible by default, would be toggled by JS) -->
  <!-- For Tailwind-only, this would typically require a hidden/block class toggle. -->
  <!-- As we are JS-free, this is a conceptual placeholder representing what would animate. -->
  <div class="hidden lg:hidden flex-col items-stretch text-center pb-4 space-y-4 bg-gray-100 dark:bg-gray-800 border-t border-gray-200 dark:border-gray-700">
    <a href="#" class="block py-3 text-gray-800 dark:text-gray-200 hover:bg-gray-200 dark:hover:bg-gray-700 transition duration-200 ease-in-out font-medium text-xl shadow-inner">
      Documentation
    </a>
    <a href="#" class="block py-3 text-gray-800 dark:text-gray-200 hover:bg-gray-200 dark:hover:bg-gray-700 transition duration-200 ease-in-out font-medium text-xl">
      Guides
    </a>
    <a href="#" class="block py-3 text-gray-800 dark:text-gray-200 hover:bg-gray-200 dark:hover:bg-gray-700 transition duration-200 ease-in-out font-medium text-xl">
      API
    </a>
    <a href="#" class="block py-3 text-gray-800 dark:text-gray-200 hover:bg-gray-200 dark:hover:bg-gray-700 transition duration-200 ease-in-out font-medium text-xl">
      Community
    </a>
    <a href="#" class="mx-4 py-3 px-6 rounded-full bg-gray-800 text-gray-50 hover:bg-gray-900 dark:bg-gray-200 dark:text-gray-800 dark:hover:bg-gray-50 transition duration-200 ease-in-out text-xl font-semibold shadow-lg">
      Get Started
    </a>
  </div>
</div>