diff --git a/src/Controller/Admin/EcheancierController.php b/src/Controller/Admin/EcheancierController.php
index 6968aaf..136f1df 100644
--- a/src/Controller/Admin/EcheancierController.php
+++ b/src/Controller/Admin/EcheancierController.php
@@ -296,7 +296,7 @@ class EcheancierController extends AbstractController
                 $slug = $docuSeal->getSubmitterSlug($submitterId);
                 $signUrl = null !== $slug ? rtrim($docuSealUrl, '/').'/s/'.$slug : null;
 
-                $processUrl = $urlGenerator->generate('app_echeancier_process', [
+                $processUrl = $urlGenerator->generate('app_echeancier_verify', [
                     'id' => $echeancier->getId(),
                 ], UrlGeneratorInterface::ABSOLUTE_URL);
 
diff --git a/src/Controller/EcheancierProcessController.php b/src/Controller/EcheancierProcessController.php
index cf44d7f..a812049 100644
--- a/src/Controller/EcheancierProcessController.php
+++ b/src/Controller/EcheancierProcessController.php
@@ -3,29 +3,118 @@
 namespace App\Controller;
 
 use App\Entity\Echeancier;
+use App\Service\DocuSealService;
+use App\Service\MailerService;
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
+use Twig\Environment;
 
 class EcheancierProcessController extends AbstractController
 {
     public function __construct(
         private EntityManagerInterface $em,
+        private MailerService $mailer,
+        private Environment $twig,
     ) {
     }
 
     /**
-     * Page de detail echeancier avant signature (publique).
+     * Verification par code email avant d'acceder a l'echeancier.
      */
-    #[Route('/echeancier/process/{id}', name: 'app_echeancier_process', requirements: ['id' => '\d+'])]
-    public function process(int $id): Response
+    #[Route('/echeancier/verify/{id}', name: 'app_echeancier_verify', requirements: ['id' => '\d+'])]
+    public function verify(int $id, Request $request): Response
     {
         $echeancier = $this->em->getRepository(Echeancier::class)->find($id);
         if (null === $echeancier) {
             throw $this->createNotFoundException('Echeancier introuvable.');
         }
 
+        $customer = $echeancier->getCustomer();
+        $session = $request->getSession();
+        $sessionKey = 'echeancier_verified_'.$echeancier->getId();
+
+        if ($session->get($sessionKey, false)) {
+            return $this->redirectToRoute('app_echeancier_process', ['id' => $id]);
+        }
+
+        if (null === $customer->getEmail()) {
+            $session->set($sessionKey, true);
+
+            return $this->redirectToRoute('app_echeancier_process', ['id' => $id]);
+        }
+
+        $codeKey = 'echeancier_code_'.$id;
+        $codeExpiresKey = 'echeancier_code_expires_'.$id;
+        $error = null;
+
+        if ('POST' === $request->getMethod()) {
+            $code = trim($request->request->getString('code'));
+            $storedCode = $session->get($codeKey);
+            $expiresAt = $session->get($codeExpiresKey, 0);
+
+            if (time() > $expiresAt) {
+                $error = 'Code expire. Cliquez sur "Renvoyer" pour en recevoir un nouveau.';
+                $session->remove($codeKey);
+                $session->remove($codeExpiresKey);
+            } elseif ($code === $storedCode) {
+                $session->set($sessionKey, true);
+                $session->remove($codeKey);
+                $session->remove($codeExpiresKey);
+
+                return $this->redirectToRoute('app_echeancier_process', ['id' => $id]);
+            } else {
+                $error = 'Code incorrect. Veuillez reessayer.';
+            }
+        }
+
+        // Envoyer le code si pas encore envoye ou expire
+        if (null === $session->get($codeKey) || time() > $session->get($codeExpiresKey, 0)) {
+            $code = str_pad((string) random_int(0, 999999), 6, '0', \STR_PAD_LEFT);
+            $session->set($codeKey, $code);
+            $session->set($codeExpiresKey, time() + 900);
+
+            $this->mailer->sendEmail(
+                $customer->getEmail(),
+                'Code de verification - Echeancier',
+                $this->twig->render('emails/order_verify_code.html.twig', [
+                    'customer' => $customer,
+                    'advert' => null,
+                    'code' => $code,
+                ]),
+                null,
+                null,
+                false,
+            );
+        }
+
+        return $this->render('echeancier/verify.html.twig', [
+            'echeancier' => $echeancier,
+            'customer' => $customer,
+            'error' => $error,
+        ]);
+    }
+
+    /**
+     * Page de detail echeancier avant signature (protegee par code).
+     */
+    #[Route('/echeancier/process/{id}', name: 'app_echeancier_process', requirements: ['id' => '\d+'])]
+    public function process(int $id, Request $request): Response
+    {
+        $echeancier = $this->em->getRepository(Echeancier::class)->find($id);
+        if (null === $echeancier) {
+            throw $this->createNotFoundException('Echeancier introuvable.');
+        }
+
+        // Verifier si authentifie
+        $session = $request->getSession();
+        if (!$session->get('echeancier_verified_'.$echeancier->getId(), false)) {
+            return $this->redirectToRoute('app_echeancier_verify', ['id' => $id]);
+        }
+
         if (\in_array($echeancier->getState(), [Echeancier::STATE_SIGNED, Echeancier::STATE_ACTIVE, Echeancier::STATE_COMPLETED], true)) {
             return $this->render('echeancier/signed.html.twig', [
                 'echeancier' => $echeancier,
@@ -33,12 +122,66 @@ class EcheancierProcessController extends AbstractController
             ]);
         }
 
+        if (Echeancier::STATE_CANCELLED === $echeancier->getState()) {
+            return $this->render('echeancier/refused.html.twig', [
+                'echeancier' => $echeancier,
+                'customer' => $echeancier->getCustomer(),
+            ]);
+        }
+
         return $this->render('echeancier/process.html.twig', [
             'echeancier' => $echeancier,
             'customer' => $echeancier->getCustomer(),
         ]);
     }
 
+    /**
+     * Redirige vers DocuSeal pour signer.
+     */
+    #[Route('/echeancier/sign/{id}', name: 'app_echeancier_sign', requirements: ['id' => '\d+'])]
+    public function sign(
+        int $id,
+        DocuSealService $docuSeal,
+        #[Autowire(env: 'DOCUSEAL_URL')] string $docuSealUrl = '',
+    ): Response {
+        $echeancier = $this->em->getRepository(Echeancier::class)->find($id);
+        if (null === $echeancier) {
+            throw $this->createNotFoundException('Echeancier introuvable.');
+        }
+
+        $submitterId = (int) ($echeancier->getSubmissionId() ?? '0');
+        if ($submitterId <= 0) {
+            throw $this->createNotFoundException('Echeancier non envoye pour signature.');
+        }
+
+        $slug = $docuSeal->getSubmitterSlug($submitterId);
+        if (null === $slug) {
+            throw $this->createNotFoundException('Lien de signature introuvable.');
+        }
+
+        return $this->redirect(rtrim($docuSealUrl, '/').'/s/'.$slug);
+    }
+
+    /**
+     * Refuse l'echeancier.
+     */
+    #[Route('/echeancier/refuse/{id}', name: 'app_echeancier_refuse', requirements: ['id' => '\d+'])]
+    public function refuse(int $id): Response
+    {
+        $echeancier = $this->em->getRepository(Echeancier::class)->find($id);
+        if (null === $echeancier) {
+            throw $this->createNotFoundException('Echeancier introuvable.');
+        }
+
+        $echeancier->setState(Echeancier::STATE_CANCELLED);
+        $this->em->flush();
+
+        return $this->render('echeancier/refused.html.twig', [
+            'echeancier' => $echeancier,
+            'customer' => $echeancier->getCustomer(),
+        ]);
+    }
+
     /**
      * Callback DocuSeal apres signature du client.
      */
diff --git a/templates/echeancier/process.html.twig b/templates/echeancier/process.html.twig
index d035f29..99838c9 100644
--- a/templates/echeancier/process.html.twig
+++ b/templates/echeancier/process.html.twig
@@ -83,6 +83,25 @@
                 Une fois le contrat signe, un email vous sera envoye pour effectuer la configuration des prelevements automatiques.
             </p>
 
+            <p class="text-xs text-gray-500 mb-6">
+                Les prelevements seront effectues via <strong>Stripe</strong>, plateforme de paiement securisee. Vous recevrez un email de confirmation a chaque echeance.
+            </p>
+
+            {# Boutons signer / refuser #}
+            {% if echeancier.submissionId %}
+                <div class="flex justify-center gap-4 mb-6">
+                    <a href="{{ path('app_echeancier_sign', {id: echeancier.id}) }}"
+                       class="px-6 py-3 bg-green-600 text-white font-bold uppercase text-xs tracking-wider hover:bg-green-700 transition-all">
+                        Signer l'echeancier
+                    </a>
+                    <a href="{{ path('app_echeancier_refuse', {id: echeancier.id}) }}"
+                       class="px-6 py-3 bg-red-500/20 text-red-700 font-bold uppercase text-xs tracking-wider hover:bg-red-500 hover:text-white transition-all"
+                       onclick="return confirm('Etes-vous sur de vouloir refuser cet echeancier ?')">
+                        Refuser
+                    </a>
+                </div>
+            {% endif %}
+
             <p class="text-center text-xs text-gray-400 mt-6">
                 Pour toute question : <a href="mailto:contact@e-cosplay.fr" class="font-bold" style="color: #fabf04;">contact@e-cosplay.fr</a>
             </p>
diff --git a/templates/echeancier/refused.html.twig b/templates/echeancier/refused.html.twig
new file mode 100644
index 0000000..ecc11d8
--- /dev/null
+++ b/templates/echeancier/refused.html.twig
@@ -0,0 +1,25 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Echeancier refuse - Association E-Cosplay{% endblock %}
+
+{% block body %}
+<div class="min-h-screen flex items-center justify-center p-4" style="background: linear-gradient(135deg, #f5f5f0 0%, #e8e8e0 100%);">
+    <div class="glass-heavy w-full max-w-lg overflow-hidden">
+        <div class="glass-dark text-white px-8 py-6 text-center">
+            <svg xmlns="http://www.w3.org/2000/svg" class="h-12 w-12 mx-auto mb-3 text-red-400" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z" />
+            </svg>
+            <h1 class="text-xl font-bold uppercase tracking-widest">Echeancier refuse</h1>
+        </div>
+        <div class="p-8 text-center">
+            <p class="text-sm text-gray-600 mb-4">
+                L'echeancier de paiement a ete refuse.
+            </p>
+            <p class="text-xs text-gray-400">
+                Si vous souhaitez discuter d'autres modalites de paiement, contactez-nous a
+                <a href="mailto:contact@e-cosplay.fr" class="font-bold" style="color: #fabf04;">contact@e-cosplay.fr</a>
+            </p>
+        </div>
+    </div>
+</div>
+{% endblock %}
diff --git a/templates/echeancier/verify.html.twig b/templates/echeancier/verify.html.twig
new file mode 100644
index 0000000..fcdbcd6
--- /dev/null
+++ b/templates/echeancier/verify.html.twig
@@ -0,0 +1,34 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Verification - Echeancier - Association E-Cosplay{% endblock %}
+
+{% block body %}
+<div class="min-h-screen flex items-center justify-center p-4" style="background: linear-gradient(135deg, #f5f5f0 0%, #e8e8e0 100%);">
+    <div class="glass-heavy w-full max-w-md overflow-hidden">
+        <div class="glass-dark text-white px-8 py-6 text-center">
+            <h1 class="text-lg font-bold uppercase tracking-widest">Verification</h1>
+            <p class="text-xs text-white/60 mt-1">Un code a ete envoye a {{ customer.email }}</p>
+        </div>
+        <div class="p-8">
+            {% if error %}
+                <div class="mb-4 p-3 bg-red-500/20 text-red-700 font-bold text-xs">{{ error }}</div>
+            {% endif %}
+
+            <p class="text-sm text-gray-600 mb-4">
+                Saisissez le code de verification a 6 chiffres recu par email pour acceder a votre echeancier.
+            </p>
+
+            <form method="post" action="{{ path('app_echeancier_verify', {id: echeancier.id}) }}">
+                <div class="mb-4">
+                    <label for="code" class="block text-[9px] font-bold uppercase tracking-wider text-gray-400 mb-1">Code de verification</label>
+                    <input type="text" id="code" name="code" maxlength="6" pattern="[0-9]{6}" required autofocus
+                           class="input-glass w-full px-4 py-3 text-center text-2xl font-bold tracking-[0.5em]" placeholder="000000">
+                </div>
+                <button type="submit" class="w-full btn-gold px-4 py-3 font-bold uppercase text-xs tracking-wider text-gray-900">Verifier</button>
+            </form>
+
+            <p class="text-center text-xs text-gray-400 mt-4">Le code expire dans 15 minutes.</p>
+        </div>
+    </div>
+</div>
+{% endblock %}