Componente Casella di ricerca skeuomorfa

<div class="p-8 bg-gradient-to-br from-gray-300 to-gray-400 dark:from-gray-800 dark:to-gray-900 min-h-screen flex items-center justify-center">
    <div class="relative w-full max-w-md">
        <!-- Outer Bevel/Shadow -->
        <div class="absolute inset-0 bg-gradient-to-br from-gray-200 to-gray-500 dark:from-gray-700 dark:to-black rounded-full shadow-xl animate-pulse-light dark:animate-pulse-dark"></div>

        <!-- Inner Concave Effect -->
        <div class="relative flex items-center bg-gray-300 dark:bg-gray-800 rounded-full p-2 shadow-inner-concave dark:shadow-inner-concave-dark">
            <input type="text" placeholder="Search your friends, posts, or groups..." class="flex-grow py-3 pl-6 pr-4 bg-transparent text-gray-800 dark:text-gray-200 placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:ring-0 text-lg sm:text-xl font-medium tracking-wide" />
            
            <!-- Search Button -->
            <button class="relative w-14 h-14 bg-gradient-to-br from-blue-500 to-indigo-600 dark:from-blue-700 dark:to-indigo-800 rounded-full flex items-center justify-center shadow-neumorphic-btn dark:shadow-neumorphic-btn-dark hover:from-blue-600 hover:to-indigo-700 dark:hover:from-blue-800 dark:hover:to-indigo-900 transition-all duration-300 transform active:scale-95">
                <svg class="w-7 h-7 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"></path></svg>
            </button>
        </div>
    </div>

    <!-- Hidden custom styles for shadows (usually in CSS file or <style> tag) -->
    <style>
        /* Light Mode Inner Concave Shadow */
        .shadow-inner-concave {
            box-shadow: inset 8px 8px 15px #a7a7a7, inset -8px -8px 15px #ffffff;
        }

        /* Dark Mode Inner Concave Shadow */
        .dark .shadow-inner-concave-dark {
            box-shadow: inset 8px 8px 15px #4a4a4a, inset -8px -8px 15px #2a2a2a;
        }

        /* Light Mode Neumorphic Button Shadow */
        .shadow-neumorphic-btn {
            box-shadow: 6px 6px 12px #9a9a9a, -6px -6px 12px #ffffff;
        }

        /* Dark Mode Neumorphic Button Shadow */
        .dark .shadow-neumorphic-btn-dark {
            box-shadow: 6px 6px 12px #2a2a2a, -6px -6px 12px #6a6a6a;
        }

        /* Animation for outer bevel light mode */
        @keyframes pulse-light {
            0% { transform: scale(1); opacity: 0.8; }
            50% { transform: scale(1.02); opacity: 1; }
            100% { transform: scale(1); opacity: 0.8; }
        }
        .animate-pulse-light {
            animation: pulse-light 4s infinite ease-in-out;
        }

        /* Animation for outer bevel dark mode */
        @keyframes pulse-dark {
            0% { transform: scale(1); opacity: 0.6; }
            50% { transform: scale(1.02); opacity: 0.9; }
            100% { transform: scale(1); opacity: 0.6; }
        }
        .dark .animate-pulse-dark {
            animation: pulse-dark 4s infinite ease-in-out;
        }

        /* Responsive adjustments */
        @media (max-width: 640px) {
            .shadow-inner-concave, .dark .shadow-inner-concave-dark {
                box-shadow: inset 5px 5px 10px #a7a7a7, inset -5px -5px 10px #ffffff;
            }
            .dark .shadow-inner-concave-dark {
                box-shadow: inset 5px 5px 10px #4a4a4a, inset -5px -5px 10px #2a2a2a;
            }
            .shadow-neumorphic-btn, .dark .shadow-neumorphic-btn-dark {
                box-shadow: 4px 4px 8px #9a9a9a, -4px -4px 8px #ffffff;
            }
            .dark .shadow-neumorphic-btn-dark {
                box-shadow: 4px 4px 8px #2a2a2a, -4px -4px 8px #6a6a6a;
            }
            .w-14 {
                width: 3.5rem; /* ~56px */
            }
            .h-14 {
                height: 3.5rem; /* ~56px */
            }
            .p-8 {
                padding: 1rem;
            }
        }
    </style>
</div>