Mega Menu Component

<nav class="bg-gray-200 dark:bg-gray-800 transition-colors duration-300 ease-in-out">
    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
        <div class="flex items-center justify-between h-16">
            <div class="flex items-center">
                <div class="flex-shrink-0">
                    <span class="text-2xl font-bold text-gray-800 dark:text-gray-200">Blog Name</span>
                </div>
                <div class="hidden md:block">
                    <div class="ml-10 flex items-baseline space-x-4">
                        <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium neu neu-pressed">Home</a>
                        <div class="relative group">
                            <button class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium neu neu-pressed">Categories</button>
                            <div class="absolute z-10 left-0 mt-2 w-60 bg-gray-200 dark:bg-gray-700 rounded-md shadow-lg opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-opacity duration-300 ease-in-out neu">
                                <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 neu-pressed">Technology</a>
                                <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 neu-pressed">Travel</a>
                                <a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 neu-pressed">Food</a>
                            </div>
                        </div>
                        <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium neu neu-pressed">About</a>
                        <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium neu neu-pressed">Contact</a>
                    </div>
                </div>
            </div>
            <div class="-mr-2 flex md:hidden">
                <button class="inline-flex items-center justify-center p-2 rounded-md text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white hover:bg-gray-300 dark:hover:bg-gray-700 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-gray-500 neu neu-pressed">
                    <span class="sr-only">Open main menu</span>
                    <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16" />
                    </svg>
                </button>
            </div>
        </div>
    </div>

    <div class="md:hidden" id="mobile-menu">
        <div class="px-2 pt-2 pb-3 space-y-1 sm:px-3">
            <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium neu neu-pressed">Home</a>
            <div class="group">
                <button class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium w-full text-left neu neu-pressed">Categories</button>
                <div class="pl-4 mt-2 space-y-1">
                    <a href="#" class="block px-3 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 rounded-md neu-pressed">Technology</a>
                    <a href="#" class="block px-3 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 rounded-md neu-pressed">Travel</a>
                    <a href="#" class="block px-3 py-2 text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-300 dark:hover:bg-gray-600 rounded-md neu-pressed">Food</a>
                </div>
            </div>
            <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium neu neu-pressed">About</a>
            <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium neu neu-pressed">Contact</a>
        </div>
    </div>

    <style>
        .neu {
            box-shadow: 5px 5px 10px #a7a7a7, -5px -5px 10px #ffffff;
        }
        .dark .neu {
            box-shadow: 5px 5px 10px #4b4b4b, -5px -5px 10px #333333;
        }
        .neu-pressed {
             box-shadow: inset 5px 5px 10px #a7a7a7, inset -5px -5px 10px #ffffff;
        }
        .dark .neu-pressed {
            box-shadow: inset 5px 5px 10px #4b4b4b, inset -5px -5px 10px #333333;
        }
    </style>
</nav>