Add Luma embed for Community Day events & facade iframes (#38845)

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>

source/_includes/javascripts/scripts.html

@@ -5,32 +5,62 @@
 <script src="{{ '/javascripts/prism.js' | cache_buster }}" type="text/javascript" defer></script>
 <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/@docsearch/js@3/dist/umd/index.min.js"></script>
 <script type="text/javascript">
-docsearch({
-  container: '#docsearch',
-  appId: 'FBHBYS3J0U',
-  indexName: 'home-assistant',
-  apiKey: "{{ site.algolia.api_key }}",
-});
-document.querySelector('.site-title').addEventListener('contextmenu', function(ev) {
-  ev.preventDefault();
-  document.location.assign("https://design.home-assistant.io/#brand/logo")
-});
+  docsearch({
+    container: '#docsearch',
+    appId: 'FBHBYS3J0U',
+    indexName: 'home-assistant',
+    apiKey: "{{ site.algolia.api_key }}",
+  });
+  document.querySelector('.site-title').addEventListener('contextmenu', function (ev) {
+    ev.preventDefault();
+    document.location.assign("https://design.home-assistant.io/#brand/logo")
+  });
 </script>
 
 
 {% if page.hero_unit %}
 <script type="text/javascript">
-  const changeNavColor = () => {
-    const scrollPosition = document.documentElement.scrollTop;
-    const nav = document.querySelector("header");
-    if (scrollPosition <= 1) {
-      nav.classList.add("dark");
-    } else {
-      nav.classList.remove("dark");
+  {
+    const changeNavColor = () => {
+      const scrollPosition = document.documentElement.scrollTop;
+      const nav = document.querySelector("header");
+      if (scrollPosition <= 1) {
+        nav.classList.add("dark");
+      } else {
+        nav.classList.remove("dark");
+      }
     }
-  }
   
-  window.addEventListener("load", () => changeNavColor());
-  window.addEventListener("scroll", () => changeNavColor());
+    window.addEventListener("load", () => changeNavColor());
+    window.addEventListener("scroll", () => changeNavColor(), { passive: true });
+  }
 </script>
 {% endif %}
+
+<script type="text/javascript">
+  {
+    const article = document.querySelector("article.post");
+    if (article) {
+      const iframes = article.querySelectorAll("iframe[data-src]");
+      let loaded = false;
+      if (iframes) {
+        document.addEventListener('mousemove', loadLazyFrames, { passive: true, once: true });
+        document.addEventListener('touchmove', loadLazyFrames, { passive: true, once: true });
+        document.addEventListener('scroll', loadLazyFrames, { passive: true, once: true });
+  
+        function loadLazyFrames() {
+          if (loaded) return;
+          loaded = true;
+  
+          iframes.forEach((iframe) => {
+            const src = iframe.getAttribute("data-src");
+            if (src) {
+              iframe.setAttribute("src", src);
+              iframe.removeAttribute("data-src");
+            }
+          });
+        }
+      }
+    }
+  }
+</script>

source/_posts/2025-04-24-community-day.markdown

@@ -23,26 +23,20 @@ I'm sure you're all wondering, "*Missy, what is a Community Day?*". In its simpl
 
 ### Locations and registering to attend
 
-We already have **13 events** hosted by several of us who work on Home Assistant 😎! To coordinate these, we are using Luma, a site focused on tech meetups. All the current events can be found on our [Home Assistant Community Day](https://lu.ma/haday2025) calendar, including:
+To coordinate all these meetups, we are using Luma, a site focused on tech meetups. All the current events can be found below or on our [Home Assistant Community Day](https://lu.ma/haday2025) calendar.
 
-**Europe**
-- [Aveiro, Portugal](https://lu.ma/p9eo4v3t)
-- [Bordeaux, France](https://lu.ma/shxhyi6u)
-- [London, United Kingdom](https://lu.ma/fa5ez3t7)
-- [Madrid, Spain](https://lu.ma/o6pqbjv8)
-- [Porto, Portugal](https://lu.ma/uozbfr6n)
-- [Prague, Czech Republic](https://lu.ma/dhudha0z)
-- [Utrecht, Netherlands](https://lu.ma/e2wyv8k0)
-- [Vienna, Austria](https://lu.ma/2vjs7dab)
+<iframe
+  data-src="https://lu.ma/embed/calendar/cal-QXZXEJrvB3UaI63/events?lt=light"
+  width="100%"
+  height="600"
+  frameborder="0"
+  style="border: 1px solid #bfcbda88; border-radius: 4px;"
+  allowfullscreen=""
+  aria-hidden="false"
+  tabindex="0"
+></iframe>
 
-**North America**
-- [Brooklyn, New York](https://lu.ma/efkt35on)
-- [Charlotte, North Carolina](https://lu.ma/3kbb2dte)
-- [Houston, Texas](https://lu.ma/g5o66to2)
-- [Redmond, Washington](https://lu.ma/qb0hhhkm)
-- [Twin Cities, Minnesota](https://lu.ma/ljwdnjmc)
-
-All Community Day events are free, so **[register before spaces run out!](https://lu.ma/haday2025)** (No worries, there are waitlists!)
+All Community Day events are free, so **[register before spaces run out!](https://lu.ma/haday2025)** (No worries, there are waitlists!). We also have people who work full-time on Home Assistant attending these events. To find out who you can meet, head over to Luma 😎!
 
 ### Host your own