Feature: Intelligent zoom and fix dropdown z-index

1. Fixed dropdown z-index
   - Set .map-overlay-top z-index to 500
   - Now dropdown appears above filter buttons (z-index: 300)

2. Intelligent zoom when searching
   - 1 result: Zoom to that post (zoom level 14)
   - Multiple results: Calculate bounding box and fitBounds()
   - Shows all matching posts together on map
   - Padding of 100px on all sides
   - MaxZoom 15 to avoid zooming too close

When you search and press Enter, the map automatically adjusts
to show all matching results optimally.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/Map/MapView.jsx

@@ -247,6 +247,58 @@ export default function MapView({
     setSearchQuery(query);
   };
 
+  // Zoom intelligent: quand on cherche, zoom pour voir tous les résultats
+  useEffect(() => {
+    if (!searchQuery || !visiblePosts.length) return;
+
+    const map = mapRef.current;
+    if (!map) return;
+
+    // Attendre un peu que les markers soient créés
+    const timer = setTimeout(() => {
+      const postsWithCoords = visiblePosts.filter(p => {
+        const lat = typeof p.lat === 'number' ? p.lat : p.latitude;
+        const lon = typeof p.lon === 'number' ? p.lon : p.lng;
+        return lat != null && lon != null;
+      });
+
+      if (postsWithCoords.length === 0) return;
+
+      if (postsWithCoords.length === 1) {
+        // Un seul résultat: zoom dessus
+        const p = postsWithCoords[0];
+        const lat = typeof p.lat === 'number' ? p.lat : p.latitude;
+        const lon = typeof p.lon === 'number' ? p.lon : p.lng;
+        map.flyTo({
+          center: [lon, lat],
+          zoom: 14,
+          speed: 1.2,
+          essential: true
+        });
+      } else {
+        // Plusieurs résultats: calculer bounds et fitter
+        const lats = postsWithCoords.map(p => typeof p.lat === 'number' ? p.lat : p.latitude);
+        const lons = postsWithCoords.map(p => typeof p.lon === 'number' ? p.lon : p.lng);
+
+        const minLat = Math.min(...lats);
+        const maxLat = Math.max(...lats);
+        const minLon = Math.min(...lons);
+        const maxLon = Math.max(...lons);
+
+        map.fitBounds(
+          [[minLon, minLat], [maxLon, maxLat]],
+          {
+            padding: { top: 100, bottom: 100, left: 100, right: 100 },
+            maxZoom: 15,
+            duration: 1000
+          }
+        );
+      }
+    }, 300); // Délai pour laisser les markers se créer
+
+    return () => clearTimeout(timer);
+  }, [searchQuery, visiblePosts, mapRef]);
+
   const handleOpenCreate = () => {
     if (!authenticated) {
       alert("You must be logged in to place a wire.");

src/styles/map.css

@@ -77,6 +77,7 @@
   transform:translateX(-50%);
   max-width: min(980px, calc(100vw - 24px));
   width:100%;
+  z-index: 500; /* Au-dessus des filtres (z-index: 300) */
 }
 
 /* Left / right: filtres */