Add closing slide section with QR codes and styling enhancements

- Introduced a new closing slide section in index.html to thank the audience and provide QR codes for easy access to the repository and slides.
- Added corresponding CSS styles in custom.css to enhance the presentation of the closing slide elements, including layout and typography adjustments.
- Implemented QR code generation for the repository and slides using JavaScript for improved user engagement.

content/kubernetes-hell-to-heaven/css/custom.css

@@ -284,3 +284,70 @@
   color: var(--accent-cyan);
   font-weight: 600;
 }
+
+/* Slide de fin : remerciement, Q/R, QR codes */
+.reveal section.slide-fin h1 {
+  margin: 0 0 0.2em;
+  font-size: clamp(1.15em, 5vw, 1.45em);
+}
+
+.reveal section.slide-fin .slide-fin-thanks {
+  margin: 0 0 0.15em;
+  font-size: 0.52em;
+  line-height: 1.35;
+  color: var(--text-muted);
+}
+
+.reveal section.slide-fin .slide-fin-cta {
+  margin: 0 0 0.35em;
+  font-size: 0.72em;
+  font-weight: 600;
+  color: var(--accent-cyan);
+}
+
+.reveal section.slide-fin .slide-fin-hint {
+  margin: 0 auto 0.45em;
+  max-width: 28em;
+  font-size: 0.38em;
+  line-height: 1.4;
+  color: var(--text-subtle);
+}
+
+.reveal section.slide-fin .slide-fin-qr-grid {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  align-items: flex-end;
+  gap: 0.85em 1.75em;
+  margin: 0.15em 0 0;
+}
+
+.reveal section.slide-fin .slide-fin-qr-block {
+  margin: 0;
+  padding: 0;
+  border: none;
+  text-align: center;
+}
+
+.reveal section.slide-fin .slide-fin-qr-block figcaption {
+  margin: 0 0 0.35em;
+  font-size: 0.36em;
+  font-weight: 600;
+  color: var(--text-muted);
+}
+
+.reveal section.slide-fin .qrcode-fin-wrap {
+  display: inline-block;
+  padding: 0.2em;
+  background: #fff;
+  border-radius: 8px;
+  line-height: 0;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
+}
+
+.reveal section.slide-fin .qrcode-fin-wrap canvas,
+.reveal section.slide-fin .qrcode-fin-wrap img {
+  display: block;
+  width: 150px;
+  height: 150px;
+}

content/kubernetes-hell-to-heaven/index.html

@@ -667,8 +667,31 @@ spec:
             honnêtes, plus que chaque ligne du deck.</p>
         </aside>
       </section>
+      <section class="slide-fin">
+        <h1>Merci</h1>
+        <p class="slide-fin-thanks">Merci pour votre attention.</p>
+        <p class="slide-fin-cta">Des questions ?</p>
+        <p class="slide-fin-hint">Dépôt des sources et page d’accueil des slides — à scanner pour repartir avec les
+          liens.</p>
+        <div class="slide-fin-qr-grid">
+          <figure class="slide-fin-qr-block">
+            <figcaption>Dépôt</figcaption>
+            <div id="qrcode-fin-repo" class="qrcode-fin-wrap" aria-hidden="true"></div>
+          </figure>
+          <figure class="slide-fin-qr-block">
+            <figcaption>Slides — accueil</figcaption>
+            <div id="qrcode-fin-site" class="qrcode-fin-wrap" aria-hidden="true"></div>
+          </figure>
+        </div>
+        <aside class="notes">
+          <p>Slide de clôture : laisser le temps de photographier les QR. Rappeler à voix haute le dépôt et l’URL des
+            slides si la salle est loin de l’écran.</p>
+        </aside>
+      </section>
     </div>
     <footer class="deck-footer">
+      <a href="../">Accueil</a>
+      <span class="deck-footer-sep" aria-hidden="true">·</span>
       <a href="https://specificat.io/" rel="noopener noreferrer" target="_blank">Specificat.io</a>
       <span class="deck-footer-sep" aria-hidden="true">·</span>
       <span class="deck-footer-rights">All rights reserved</span>
@@ -799,6 +822,22 @@ spec:
       });
     })();
   </script>
+  <script src="https://cdn.jsdelivr.net/npm/qrcodejs/qrcode.min.js"></script>
+  <script>
+    (function () {
+      if (typeof QRCode === "undefined") return;
+      var repoUrl = "https://git.specificat.io/arnault/Talks";
+      var talksHome = new URL("../", window.location.href);
+      talksHome.hash = "";
+      var siteUrl = talksHome.href;
+
+      var repoEl = document.getElementById("qrcode-fin-repo");
+      var siteEl = document.getElementById("qrcode-fin-site");
+      var qrOpts = { width: 150, height: 150 };
+      if (repoEl) new QRCode(repoEl, Object.assign({ text: repoUrl }, qrOpts));
+      if (siteEl) new QRCode(siteEl, Object.assign({ text: siteUrl }, qrOpts));
+    })();
+  </script>
 </body>
 
 </html>