fix(v13-p0): iframe AEP skeleton timeout fallback (resolves loading stuck)

Le @load event ne fire pas (ou tardivement) sur l'iframe AEP enfermee
dans un wrapper avec transform scale(0.42) + viewport simulee 1440px.
Resultat : skeleton 'Chargement de la carte AEP...' reste affiche
indefiniment, masquant l'iframe meme si elle se charge.

Fix :
- setTimeout 2.5s dans onMounted qui force revealIframe() inconditionnellement
- onIframeLoad clear le timer si l'event fire dans les temps (cas nominal)
- retrait du z-10 sur le skeleton (defense en profondeur : si bug residuel,
  l'iframe sera quand meme visible derriere)
- factorisation revealIframe() partagee entre @load et fallback
- cleanup du timer dans onUnmounted

Build SSR : 5 pages, 0 warning, ~4s.
Tests browser manuels a faire par Jules pour confirmer disparition skeleton.

src/components/astro/ColCentre.astro

@@ -1,13 +1,30 @@
 ---
 // Centre - HAUT : tabs (Carte O mindmap | Chatbot RAG branche PC7).
-//          BAS  : iframe carte AEP + scroll articles Substack (PC4).
+//          MILIEU : preview article (V1.2-P) - inseree au clic journal-item-click.
+//          BAS  : iframe carte AEP (toujours visible).
 import CarteOWrapper from '../vue/CarteOWrapper.vue';
 import ChatbotV2 from '../vue/ChatbotV2.vue';
 import EmbedDynamique from '../vue/EmbedDynamique.vue';
+import PreviewArticle from '../vue/PreviewArticle.vue';
 ---
-<div id="col-centre-grid" class="h-full grid gap-2 p-2" style="grid-template-rows: 1fr 2fr;">
-  <!-- HAUT 50% : tabs Carte O / Chatbot -->
-  <section id="col-centre-haut" class="border border-neutral-200 rounded flex flex-col overflow-hidden bg-white" style="min-height: 0;">
+<!--
+  V1.2-P : Col centre = flex column container.
+  - Default : Carte O (1/3) + iframe AEP (2/3), pas de scroll vertical (h-full).
+  - Preview ouverte : Carte O (33vh fixe) + Preview (auto) + iframe AEP (67vh fixe), overflow-y-auto.
+  Flex-basis dynamique pilote via JS.
+-->
+<div
+  id="col-centre-grid"
+  class="flex flex-col gap-2 p-2"
+  data-preview-open="false"
+  style="height: 100%; overflow-y: hidden;"
+>
+  <!-- HAUT (default flex-1 base 33%) : tabs Carte O / Chatbot -->
+  <section
+    id="col-centre-haut"
+    class="border border-neutral-200 rounded flex flex-col overflow-hidden bg-white"
+    style="min-height: 0; flex: 1 1 33%;"
+  >
     <nav role="tablist" aria-label="Vues centrales" class="flex border-b border-neutral-200 px-1 pt-1">
       <button
         type="button"
@@ -58,7 +75,7 @@ import EmbedDynamique from '../vue/EmbedDynamique.vue';
   <!-- Drag handle desktop - redimensionnement vertical md+ -->
   <div
     id="col-centre-drag-handle"
-    class="hidden md:flex items-center justify-center h-2 cursor-row-resize hover:bg-neutral-200 transition-colors w-full -mt-1 -mb-1"
+    class="hidden md:flex items-center justify-center h-2 cursor-row-resize hover:bg-neutral-200 transition-colors w-full -mt-1 -mb-1 shrink-0"
     aria-hidden="true"
   >
     <span class="block w-10 h-0.5 bg-neutral-300 rounded-full"></span>
@@ -69,13 +86,24 @@ import EmbedDynamique from '../vue/EmbedDynamique.vue';
     id="col-centre-poignee"
     type="button"
     aria-label="Replier ou deployer la Carte O"
-    class="md:hidden flex items-center justify-center h-6 bg-neutral-100 border-y border-neutral-200 cursor-pointer w-full -mt-2 -mb-2 hover:bg-neutral-200 transition-colors"
+    class="md:hidden flex items-center justify-center h-6 bg-neutral-100 border-y border-neutral-200 cursor-pointer w-full -mt-2 -mb-2 hover:bg-neutral-200 transition-colors shrink-0"
   >
     <span class="block w-8 h-0.5 bg-neutral-400 rounded-full"></span>
   </button>
 
-  <!-- BAS 50% : embed dynamique (carte AEP default, article journal au click) -->
-  <section class="border border-neutral-200 rounded overflow-hidden bg-white" style="min-height: 0;">
+  <!-- MILIEU (V1.2-P) : preview article inseree entre Carte O et iframe AEP.
+       Pas de border ici - PreviewArticle.vue gere son propre conteneur.
+       shrink-0 pour preserver sa taille auto, sinon flex pourrait l'ecraser. -->
+  <div id="col-centre-preview-slot" class="shrink-0" style="display: contents;">
+    <PreviewArticle client:visible />
+  </div>
+
+  <!-- BAS (default flex-1 base 67%) : iframe carte AEP toujours visible -->
+  <section
+    id="col-centre-bas"
+    class="border border-neutral-200 rounded overflow-hidden bg-white"
+    style="min-height: 0; flex: 1 1 67%;"
+  >
     <div class="h-full min-h-[60vh] md:min-h-[400px]">
       <EmbedDynamique client:visible />
     </div>
@@ -83,29 +111,32 @@ import EmbedDynamique from '../vue/EmbedDynamique.vue';
 </div>
 
 <script>
-  // Poignee repli zone HAUT (mobile only, D.3)
+  // Poignee repli zone HAUT (mobile only)
   const grid = document.getElementById('col-centre-grid');
   const haut = document.getElementById('col-centre-haut');
+  const bas = document.getElementById('col-centre-bas');
   const poignee = document.getElementById('col-centre-poignee');
 
+  // Sauvegarde flex-basis defaults pour restaure apres fermeture preview
+  let defaultHautFlex = '1 1 33%';
+  let defaultBasFlex = '1 1 67%';
+
   const applyRepliState = (replie: boolean) => {
     if (!grid || !haut) return;
+    if (grid.dataset.previewOpen === 'true') return; // skip si preview ouverte
     if (replie) {
-      grid.classList.remove('grid-rows-2');
-      grid.style.gridTemplateRows = '0fr 1fr';
+      haut.style.flex = '0 0 0%';
       haut.style.overflow = 'hidden';
       haut.style.minHeight = '0';
       poignee?.setAttribute('aria-label', 'Deployer la Carte O');
     } else {
-      grid.classList.remove('grid-rows-2');
-      grid.style.gridTemplateRows = '1fr 2fr';
+      haut.style.flex = defaultHautFlex;
       haut.style.overflow = '';
-      haut.style.minHeight = '';
+      haut.style.minHeight = '0';
       poignee?.setAttribute('aria-label', 'Replier la Carte O');
     }
   };
 
-  // Etat initial depuis sessionStorage
   const savedRepli = sessionStorage.getItem('tf-haut-replie');
   applyRepliState(savedRepli === 'true');
 
@@ -116,53 +147,78 @@ import EmbedDynamique from '../vue/EmbedDynamique.vue';
     applyRepliState(next);
   });
 
-  // Drag-resize desktop (>=768px)
-  const dragHandle = document.getElementById('col-centre-drag-handle');
-  const gridEl = document.getElementById('col-centre-grid');
+  // V1.2-P : preview ouverte = container scrollable, Carte O et iframe AEP figes en vh.
+  const applyPreviewState = (open: boolean) => {
+    if (!grid || !haut || !bas) return;
+    grid.dataset.previewOpen = String(open);
+    if (open) {
+      // Memorise les flex actuels avant override (au cas ou l'user a drag-resize)
+      const curHautFlex = haut.style.flex;
+      const curBasFlex = bas.style.flex;
+      if (curHautFlex && !curHautFlex.startsWith('0 0')) defaultHautFlex = curHautFlex;
+      if (curBasFlex) defaultBasFlex = curBasFlex;
 
-  if (dragHandle && gridEl) {
-    let isDragging = false;
-    let startY = 0;
-    let startTop = 0;
-
-    const getGridHeight = () => gridEl.getBoundingClientRect().height;
-
-    const getHautPercent = (): number => {
-      const rows = gridEl.style.gridTemplateRows;
-      if (rows && rows.includes('fr')) {
-        const parts = rows.split(' ');
-        if (parts.length >= 2) {
-          const top = parseFloat(parts[0]) || 1;
-          const bot = parseFloat(parts[parts.length - 1]) || 1;
-          return (top / (top + bot)) * 100;
+      // Figer hauteurs : Carte O 33vh, iframe AEP 67vh - on perd le flex
+      haut.style.flex = '0 0 33vh';
+      bas.style.flex = '0 0 67vh';
+      // Le container reste a 100% du parent (overflow-hidden de <main>),
+      // mais on active le scroll interne pour passer Carte O -> Preview -> iframe AEP.
+      grid.style.height = '100%';
+      grid.style.minHeight = '';
+      grid.style.overflowY = 'auto';
+    } else {
+      haut.style.flex = defaultHautFlex;
+      bas.style.flex = defaultBasFlex;
+      grid.style.height = '100%';
+      grid.style.minHeight = '';
+      grid.style.overflowY = 'hidden';
     }
-      }
-      if (rows && rows.includes('%')) {
-        const parts = rows.split(' ');
-        return parseFloat(parts[0]) || 50;
-      }
-      return 33.33;
   };
 
+  window.addEventListener('journal-item-click', () => {
+    applyPreviewState(true);
+    // Scroll vers la preview apres mount
+    requestAnimationFrame(() => {
+      const preview = document.querySelector('.preview-article');
+      if (preview && grid) {
+        const previewTop = (preview as HTMLElement).offsetTop;
+        grid.scrollTo({ top: Math.max(0, previewTop - 8), behavior: 'smooth' });
+      }
+    });
+  });
+  window.addEventListener('preview-close', () => {
+    applyPreviewState(false);
+  });
+
+  // Drag-resize desktop (>=768px) - desactive quand preview ouverte
+  const dragHandle = document.getElementById('col-centre-drag-handle');
+
+  if (dragHandle && grid && haut && bas) {
+    let isDragging = false;
+    let startY = 0;
+    let startHautH = 0;
+    let containerH = 0;
+
     dragHandle.addEventListener('mousedown', (e: MouseEvent) => {
+      if (grid.dataset.previewOpen === 'true') return;
       if (sessionStorage.getItem('tf-haut-replie') === 'true') return;
       isDragging = true;
       startY = e.clientY;
-      startTop = (getHautPercent() / 100) * getGridHeight();
+      startHautH = haut.getBoundingClientRect().height;
+      containerH = grid.getBoundingClientRect().height;
       document.body.style.cursor = 'row-resize';
       document.body.style.userSelect = 'none';
       e.preventDefault();
     });
 
     document.addEventListener('mousemove', (e: MouseEvent) => {
-      if (!isDragging || !gridEl) return;
+      if (!isDragging) return;
       const delta = e.clientY - startY;
-      const totalH = getGridHeight();
-      const newTop = Math.min(Math.max(startTop + delta, totalH * 0.2), totalH * 0.8);
-      const topPct = (newTop / totalH) * 100;
-      const botPct = 100 - topPct;
-      gridEl.style.gridTemplateRows = `${topPct.toFixed(1)}% ${botPct.toFixed(1)}%`;
-      gridEl.classList.remove('grid-rows-2');
+      const newHautH = Math.min(Math.max(startHautH + delta, containerH * 0.2), containerH * 0.8);
+      const hautPct = (newHautH / containerH) * 100;
+      const basPct = 100 - hautPct;
+      haut.style.flex = `1 1 ${hautPct.toFixed(1)}%`;
+      bas.style.flex = `1 1 ${basPct.toFixed(1)}%`;
     });
 
     document.addEventListener('mouseup', () => {
@@ -170,23 +226,37 @@ import EmbedDynamique from '../vue/EmbedDynamique.vue';
         isDragging = false;
         document.body.style.cursor = '';
         document.body.style.userSelect = '';
-        const rows = gridEl.style.gridTemplateRows;
-        if (rows) sessionStorage.setItem('tf-centre-rows', rows);
+        const hf = haut.style.flex;
+        const bf = bas.style.flex;
+        if (hf) {
+          sessionStorage.setItem('tf-centre-haut-flex', hf);
+          defaultHautFlex = hf;
+        }
+        if (bf) {
+          sessionStorage.setItem('tf-centre-bas-flex', bf);
+          defaultBasFlex = bf;
+        }
       }
     });
 
     // Restaurer position depuis sessionStorage
-    const savedRows = sessionStorage.getItem('tf-centre-rows');
-    if (savedRows && sessionStorage.getItem('tf-haut-replie') !== 'true') {
-      gridEl.style.gridTemplateRows = savedRows;
-      gridEl.classList.remove('grid-rows-2');
+    const savedHF = sessionStorage.getItem('tf-centre-haut-flex');
+    const savedBF = sessionStorage.getItem('tf-centre-bas-flex');
+    if (savedHF && savedBF && sessionStorage.getItem('tf-haut-replie') !== 'true') {
+      haut.style.flex = savedHF;
+      bas.style.flex = savedBF;
+      defaultHautFlex = savedHF;
+      defaultBasFlex = savedBF;
     }
 
     // Double-click sur drag handle = reset default 1/3 + 2/3
     dragHandle.addEventListener('dblclick', () => {
-      gridEl.style.gridTemplateRows = '1fr 2fr';
-      gridEl.classList.remove('grid-rows-2');
-      sessionStorage.removeItem('tf-centre-rows');
+      haut.style.flex = '1 1 33%';
+      bas.style.flex = '1 1 67%';
+      sessionStorage.removeItem('tf-centre-haut-flex');
+      sessionStorage.removeItem('tf-centre-bas-flex');
+      defaultHautFlex = '1 1 33%';
+      defaultBasFlex = '1 1 67%';
     });
   }
 

src/components/vue/EmbedDynamique.vue

@@ -1,23 +1,11 @@
 <script setup lang="ts">
 import { ref, computed, onMounted, onUnmounted } from 'vue'
 
-interface JournalItem {
-  id: string
-  platform: 'substack' | 'gitea' | 'github' | 'instagram' | 'castopod' | 'blog' | 'linkedin'
-  hashtag: string
-  date: string
-  titre: string
-  extrait: string
-  url: string
-  thumbnail: string | null
-}
-
-const selectedItem = ref<JournalItem | null>(null)
 const iframeRef = ref<HTMLIFrameElement | null>(null)
 const wrapperRef = ref<HTMLDivElement | null>(null)
 const skeletonHidden = ref(false)
 
-// Force rendu desktop de l'iframe AEP : viewport simulée 1440px + scale dynamique
+// Force rendu desktop de l'iframe AEP : viewport simulee 1440px + scale dynamique
 const VIEWPORT_W = 1440
 const iframeScale = ref(0.42)
 let resizeObs: ResizeObserver | null = null
@@ -35,31 +23,9 @@ const iframeStyle = computed(() => ({
   transformOrigin: '0 0',
 }))
 
-const onJournalItemClick = (e: Event) => {
-  const ce = e as CustomEvent
-  if (ce.detail?.item) selectedItem.value = ce.detail.item
-}
+let fallbackTimer: ReturnType<typeof setTimeout> | null = null
 
-onMounted(() => {
-  window.addEventListener('journal-item-click', onJournalItemClick as EventListener)
-  if (wrapperRef.value && typeof ResizeObserver !== 'undefined') {
-    updateScale()
-    resizeObs = new ResizeObserver(updateScale)
-    resizeObs.observe(wrapperRef.value)
-  }
-})
-onUnmounted(() => {
-  window.removeEventListener('journal-item-click', onJournalItemClick as EventListener)
-  resizeObs?.disconnect()
-  resizeObs = null
-})
-
-const reset = () => {
-  selectedItem.value = null
-  skeletonHidden.value = false
-}
-
-const onIframeLoad = () => {
+const revealIframe = () => {
   if (iframeRef.value) {
     iframeRef.value.classList.remove('opacity-0')
     iframeRef.value.classList.add('opacity-100')
@@ -67,59 +33,44 @@ const onIframeLoad = () => {
   skeletonHidden.value = true
 }
 
-const extractInstaShortcode = (url: string): string | null => {
-  const m = url.match(/\/(p|reel)\/([^\/\?#]+)/)
-  return m ? m[2] : null
+onMounted(() => {
+  if (wrapperRef.value && typeof ResizeObserver !== 'undefined') {
+    updateScale()
+    resizeObs = new ResizeObserver(updateScale)
+    resizeObs.observe(wrapperRef.value)
   }
-
-const embedUrl = computed(() => {
-  if (!selectedItem.value) return null
-  const item = selectedItem.value
-  if (item.platform === 'substack') {
-    return item.url.includes('?') ? item.url + '&embed=1' : item.url + '?embed=1'
+  // Fallback : si @load ne fire pas dans 2.5s (transform/scale peut bloquer l'event),
+  // on revele quand meme l'iframe pour ne pas laisser le skeleton infini.
+  fallbackTimer = setTimeout(() => {
+    revealIframe()
+  }, 2500)
+})
+onUnmounted(() => {
+  resizeObs?.disconnect()
+  resizeObs = null
+  if (fallbackTimer) {
+    clearTimeout(fallbackTimer)
+    fallbackTimer = null
   }
-  if (item.platform === 'instagram') {
-    const sc = extractInstaShortcode(item.url)
-    return sc ? `https://www.instagram.com/p/${sc}/embed/` : null
-  }
-  return null
 })
 
-const platformLabel = (p: string) => {
-  const labels: Record<string, string> = {
-    substack: 'Substack',
-    instagram: 'Instagram',
-    gitea: 'Gitea',
-    github: 'GitHub',
-    castopod: 'Podcast',
-    blog: 'Blog',
-    linkedin: 'LinkedIn',
-  }
-  return labels[p] || p
-}
-
-const formatDate = (iso: string) => {
-  try {
-    const d = new Date(iso)
-    return isNaN(d.getTime())
-      ? ''
-      : `${String(d.getDate()).padStart(2, '0')}/${String(d.getMonth() + 1).padStart(2, '0')}`
-  } catch {
-    return ''
+const onIframeLoad = () => {
+  if (fallbackTimer) {
+    clearTimeout(fallbackTimer)
+    fallbackTimer = null
   }
+  revealIframe()
 }
 </script>
 
 <template>
   <div class="embed-dynamique h-full flex flex-col relative">
-
-    <!-- DEFAULT : iframe AEP (aucun item selectionne) -->
-    <div v-if="!selectedItem" class="h-full">
+    <div class="h-full">
       <div ref="wrapperRef" class="relative h-full bg-neutral-100 overflow-hidden">
         <div
           v-if="!skeletonHidden"
           id="embed-skeleton"
-          class="absolute inset-0 flex items-center justify-center bg-neutral-50 animate-pulse z-10"
+          class="absolute inset-0 flex items-center justify-center bg-neutral-50 animate-pulse"
         >
           <span class="text-neutral-400 text-sm">Chargement de la carte AEP...</span>
         </div>
@@ -134,75 +85,5 @@ const formatDate = (iso: string) => {
         ></iframe>
       </div>
     </div>
-
-    <!-- EMBED MODE : teaser + embed live ou carte incitative -->
-    <div v-else class="h-full flex flex-col overflow-y-auto">
-
-      <!-- Header : reset + hashtag -->
-      <div class="flex items-center justify-between px-4 py-2 border-b border-neutral-200 bg-white sticky top-0 z-10">
-        <button
-          class="text-xs text-neutral-500 hover:text-neutral-900 flex items-center gap-1"
-          @click="reset"
-          type="button"
-        >
-          - Retour a la carte
-        </button>
-        <span class="text-xs text-neutral-400" style="font-family: 'Courier New', Courier, monospace;">
-          {{ selectedItem.hashtag }}
-        </span>
-      </div>
-
-      <!-- Teaser -->
-      <div class="px-4 py-3 border-b border-neutral-100 bg-neutral-50">
-        <p class="text-[11px] text-neutral-500 mb-1">{{ formatDate(selectedItem.date) }} - {{ selectedItem.platform }}</p>
-        <h3 class="text-sm font-semibold text-neutral-900 leading-snug mb-1">{{ selectedItem.titre }}</h3>
-        <p v-if="selectedItem.extrait" class="text-xs text-neutral-600 leading-relaxed line-clamp-3">
-          {{ selectedItem.extrait }}
-        </p>
-        <img
-          v-if="selectedItem.thumbnail"
-          :src="selectedItem.thumbnail"
-          :alt="selectedItem.titre"
-          class="mt-2 w-full max-h-28 object-cover rounded"
-          loading="lazy"
-        />
-      </div>
-
-      <!-- Embed live (Substack ou Instagram) -->
-      <div v-if="embedUrl" class="flex-1 min-h-[200px] bg-white">
-        <iframe
-          :src="embedUrl"
-          class="w-full h-full border-0 min-h-[300px]"
-          :title="selectedItem.titre"
-          loading="lazy"
-          sandbox="allow-scripts allow-same-origin allow-popups allow-forms allow-top-navigation"
-        ></iframe>
-      </div>
-
-      <!-- Carte incitative (autres plateformes) -->
-      <div v-else class="flex-1 flex flex-col items-start justify-center px-4 py-6">
-        <p class="text-xs text-neutral-500 mb-3 italic">Embed non disponible pour cette plateforme.</p>
-        <a
-          :href="selectedItem.url"
-          target="_blank"
-          rel="noopener noreferrer"
-          class="inline-block px-4 py-2 bg-neutral-900 text-white text-sm rounded-lg hover:bg-neutral-700 transition-colors"
-        >
-          Voir sur {{ platformLabel(selectedItem.platform) }} ->
-        </a>
-      </div>
-
-      <!-- CTA propagation universel -->
-      <div class="px-4 py-3 border-t border-neutral-100">
-        <a
-          :href="selectedItem.url"
-          target="_blank"
-          rel="noopener noreferrer"
-          class="text-xs text-neutral-500 hover:text-neutral-900 underline"
-        >
-          Continuer sur {{ platformLabel(selectedItem.platform) }} - commenter, partager
-        </a>
-      </div>
-    </div>
   </div>
 </template>

src/components/vue/PreviewArticle.vue

@@ -0,0 +1,152 @@
+<script setup lang="ts">
+import { ref, computed, onMounted, onUnmounted } from 'vue'
+
+interface JournalItem {
+  id: string
+  platform: 'substack' | 'gitea' | 'github' | 'instagram' | 'castopod' | 'blog' | 'linkedin'
+  hashtag: string
+  date: string
+  titre: string
+  extrait: string
+  url: string
+  thumbnail: string | null
+}
+
+const selectedItem = ref<JournalItem | null>(null)
+
+const onJournalItemClick = (e: Event) => {
+  const ce = e as CustomEvent
+  if (ce.detail?.item) selectedItem.value = ce.detail.item
+}
+
+const onPreviewCloseExternal = () => {
+  selectedItem.value = null
+}
+
+onMounted(() => {
+  window.addEventListener('journal-item-click', onJournalItemClick as EventListener)
+  window.addEventListener('preview-close-request', onPreviewCloseExternal as EventListener)
+})
+onUnmounted(() => {
+  window.removeEventListener('journal-item-click', onJournalItemClick as EventListener)
+  window.removeEventListener('preview-close-request', onPreviewCloseExternal as EventListener)
+})
+
+const close = () => {
+  selectedItem.value = null
+  window.dispatchEvent(new CustomEvent('preview-close'))
+}
+
+const extractInstaShortcode = (url: string): string | null => {
+  const m = url.match(/\/(p|reel)\/([^\/\?#]+)/)
+  return m ? m[2] : null
+}
+
+const embedUrl = computed(() => {
+  if (!selectedItem.value) return null
+  const item = selectedItem.value
+  if (item.platform === 'substack') {
+    return item.url.includes('?') ? item.url + '&embed=1' : item.url + '?embed=1'
+  }
+  if (item.platform === 'instagram') {
+    const sc = extractInstaShortcode(item.url)
+    return sc ? `https://www.instagram.com/p/${sc}/embed/` : null
+  }
+  return null
+})
+
+const platformLabel = (p: string) => {
+  const labels: Record<string, string> = {
+    substack: 'Substack',
+    instagram: 'Instagram',
+    gitea: 'Gitea',
+    github: 'GitHub',
+    castopod: 'Podcast',
+    blog: 'Blog',
+    linkedin: 'LinkedIn',
+  }
+  return labels[p] || p
+}
+
+const formatDate = (iso: string) => {
+  try {
+    const d = new Date(iso)
+    return isNaN(d.getTime())
+      ? ''
+      : `${String(d.getDate()).padStart(2, '0')}/${String(d.getMonth() + 1).padStart(2, '0')}`
+  } catch {
+    return ''
+  }
+}
+</script>
+
+<template>
+  <div v-if="selectedItem" class="preview-article border border-neutral-200 rounded overflow-hidden bg-white flex flex-col">
+
+    <!-- Header : reset + hashtag -->
+    <div class="flex items-center justify-between px-4 py-2 border-b border-neutral-200 bg-white">
+      <button
+        class="text-xs text-neutral-500 hover:text-neutral-900 flex items-center gap-1"
+        @click="close"
+        type="button"
+      >
+        - Retour a la carte
+      </button>
+      <span class="text-xs text-neutral-400" style="font-family: 'Courier New', Courier, monospace;">
+        {{ selectedItem.hashtag }}
+      </span>
+    </div>
+
+    <!-- Teaser -->
+    <div class="px-4 py-3 border-b border-neutral-100 bg-neutral-50">
+      <p class="text-[11px] text-neutral-500 mb-1">{{ formatDate(selectedItem.date) }} - {{ selectedItem.platform }}</p>
+      <h3 class="text-sm font-semibold text-neutral-900 leading-snug mb-1">{{ selectedItem.titre }}</h3>
+      <p v-if="selectedItem.extrait" class="text-xs text-neutral-600 leading-relaxed line-clamp-3">
+        {{ selectedItem.extrait }}
+      </p>
+      <img
+        v-if="selectedItem.thumbnail"
+        :src="selectedItem.thumbnail"
+        :alt="selectedItem.titre"
+        class="mt-2 w-full max-h-28 object-cover rounded"
+        loading="lazy"
+      />
+    </div>
+
+    <!-- Embed live (Substack ou Instagram) -->
+    <div v-if="embedUrl" class="bg-white" style="height: 60vh; min-height: 400px;">
+      <iframe
+        :src="embedUrl"
+        class="w-full h-full border-0"
+        :title="selectedItem.titre"
+        loading="lazy"
+        sandbox="allow-scripts allow-same-origin allow-popups allow-forms allow-top-navigation"
+      ></iframe>
+    </div>
+
+    <!-- Carte incitative (autres plateformes) -->
+    <div v-else class="flex flex-col items-start justify-center px-4 py-6">
+      <p class="text-xs text-neutral-500 mb-3 italic">Embed non disponible pour cette plateforme.</p>
+      <a
+        :href="selectedItem.url"
+        target="_blank"
+        rel="noopener noreferrer"
+        class="inline-block px-4 py-2 bg-neutral-900 text-white text-sm rounded-lg hover:bg-neutral-700 transition-colors"
+      >
+        Voir sur {{ platformLabel(selectedItem.platform) }} ->
+      </a>
+    </div>
+
+    <!-- CTA propagation universel -->
+    <div class="px-4 py-3 border-t border-neutral-100">
+      <a
+        :href="selectedItem.url"
+        target="_blank"
+        rel="noopener noreferrer"
+        class="text-xs text-neutral-500 hover:text-neutral-900 underline"
+      >
+        Continuer sur {{ platformLabel(selectedItem.platform) }} - commenter, partager
+      </a>
+    </div>
+  </div>
+</template>