diff --git a/index.php b/index.php
index 0942608..549dae3 100644
--- a/index.php
+++ b/index.php
@@ -47,7 +47,7 @@ $username = isset($_SESSION['username']) ? $_SESSION['username'] : null;
                                 <a href="./php/auth/logout.php" class="px-4 py-2 bg-[#84dd63] text-[#1f2937] rounded hover:bg-[#cbff4d]">Logout</a>
                             <?php else: ?>
                                 <button id="openLogin" class="px-4 py-2 bg-[#84dd63] text-[#1f2937] rounded hover:bg-[#cbff4d]">Login</button>
-                                <button class="px-4 py-2 bg-[#69747c] text-white rounded opacity-80 cursor-not-allowed">Registrati (presto)</button>
+                                <button id="openRegister" class="px-4 py-2 bg-[#69747c] text-white rounded hover:bg-[#545454]">Registrati</button>
                             <?php endif; ?>
                         </div>
                     </div>
@@ -64,6 +64,7 @@ $username = isset($_SESSION['username']) ? $_SESSION['username'] : null;
                             <a href="#" class="px-5 py-2 bg-[#6baa75] text-white rounded hover:bg-[#84dd63]">Sfoglia Catalogo</a>
                             <?php if (!$isLogged): ?>
                                 <button id="openLogin2" class="px-5 py-2 bg-[#545454] text-white rounded hover:bg-[#69747c]">Accedi</button>
+                                <button id="openRegister2" class="px-5 py-2 bg-[#69747c] text-white rounded hover:bg-[#545454]">Registrati</button>
                             <?php endif; ?>
                         </div>
                     </div>
@@ -100,6 +101,58 @@ $username = isset($_SESSION['username']) ? $_SESSION['username'] : null;
                 </div>
             </div>
 
+            <!-- Modal Registrazione -->
+            <div id="registerModal" class="fixed inset-0 bg-black/40 hidden items-center justify-center">
+                <div class="bg-white w-full max-w-2xl rounded-lg shadow-lg p-6">
+                    <div class="flex justify-between items-center mb-4">
+                        <h3 class="text-lg font-semibold text-[#545454]">Registrazione Utente</h3>
+                        <button id="closeRegister" class="text-[#69747c] hover:text-[#545454]">✕</button>
+                    </div>
+                    <form id="registerForm" class="grid grid-cols-1 md:grid-cols-2 gap-4">
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Nome</label>
+                            <input type="text" name="nome" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Cognome</label>
+                            <input type="text" name="cognome" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Data di nascita</label>
+                            <input type="date" name="data_nascita" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Luogo di nascita</label>
+                            <input type="text" name="luogo_nascita" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Codice Fiscale</label>
+                            <input type="text" name="cod_fiscale" maxlength="16" required class="mt-1 w-full border rounded px-3 py-2 uppercase focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Telefono</label>
+                            <input type="tel" name="telefono" maxlength="10" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]">
+                        </div>
+                        <div class="md:col-span-2 mt-2 border-t pt-4">
+                            <h2 class="text-lg font-semibold text-[#545454]">Credenziali di accesso</h2>
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Username</label>
+                            <input type="text" name="username" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]" placeholder="es. utente@mail.com">
+                        </div>
+                        <div>
+                            <label class="block text-sm text-[#69747c]">Password</label>
+                            <input type="password" name="password" required class="mt-1 w-full border rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-[#84dd63]" placeholder="Almeno 8 caratteri, maiuscola, minuscola, speciale">
+                        </div>
+                        <div id="registerError" class="md:col-span-2 hidden text-red-600 text-sm"></div>
+                        <div id="registerOk" class="md:col-span-2 hidden text-green-700 text-sm"></div>
+                        <div class="md:col-span-2 mt-2">
+                            <button type="submit" class="w-full bg-[#6baa75] text-white rounded py-2 hover:bg-[#84dd63]">Registrati</button>
+                        </div>
+                    </form>
+                </div>
+            </div>
+
             <script>
                 $(function() {
                     const $modal = $('#loginModal');
@@ -128,6 +181,52 @@ $username = isset($_SESSION['username']) ? $_SESSION['username'] : null;
                             }
                         });
                     });
+
+                    const $regModal = $('#registerModal');
+                    $('#openRegister, #openRegister2').on('click', function(){ $regModal.removeClass('hidden').addClass('flex'); });
+                    $('#closeRegister').on('click', function(){ $regModal.addClass('hidden').removeClass('flex'); $('#registerError').addClass('hidden').text(''); $('#registerOk').addClass('hidden').text(''); });
+
+                    function clientValidate(pwd){
+                        if(/\s/.test(pwd)) return 'La password non deve contenere spazi';
+                        if(pwd.length < 8) return 'La password deve avere almeno 8 caratteri';
+                        if(!/[a-z]/.test(pwd)) return 'La password deve contenere almeno una minuscola';
+                        if(!/[A-Z]/.test(pwd)) return 'La password deve contenere almeno una maiuscola';
+                        if(!/[^a-zA-Z0-9]/.test(pwd)) return 'La password deve contenere almeno un carattere speciale';
+                        return null;
+                    }
+
+                    $('#registerForm').on('submit', function(e){
+                        e.preventDefault();
+                        const $err = $('#registerError');
+                        const $ok = $('#registerOk');
+                        $err.addClass('hidden').text('');
+                        $ok.addClass('hidden').text('');
+
+                        const pwd = $(this).find('input[name="password"]').val();
+                        const v = clientValidate(pwd);
+                        if (v) { $err.removeClass('hidden').text(v); return; }
+
+                        $.ajax({
+                            url: './php/auth/register.php',
+                            method: 'POST',
+                            data: $(this).serialize(),
+                            headers: { 'X-Requested-With': 'XMLHttpRequest' },
+                            success: function(resp){
+                                try { resp = typeof resp === 'string' ? JSON.parse(resp) : resp; } catch(_) {}
+                                if (resp && resp.status === 'ok') {
+                                    $ok.removeClass('hidden').text('Registrazione completata. Reindirizzamento...');
+                                    setTimeout(function(){ window.location.reload(); }, 800);
+                                } else {
+                                    const msg = resp && resp.errors ? resp.errors.join(' | ') : 'Registrazione non riuscita';
+                                    $err.removeClass('hidden').text(msg);
+                                }
+                            },
+                            error: function(){
+                                $err.removeClass('hidden').text('Errore di rete. Riprovare.');
+                            }
+                        });
+                    });
+
                 });
             </script>
         </body>