diff --git a/src/api/client.js b/src/api/client.js
index c191060..d1f5325 100644
--- a/src/api/client.js
+++ b/src/api/client.js
@@ -7,7 +7,7 @@ const API_BASE = "/api";
 /**
  * Récupère la liste des posts avec filtres.
  * filters: {
- *   category?: "NEWS" | "FRIENDS" | "EVENTS" | "MARKET"
+ *   category?: "NEWS" | "FRIENDS" | "EVENT" | "MARKET"
  *   subCategory?: string
  *   time?: "NOW" | "TODAY" | "RECENT" | "PAST"
  *   lat?: number
@@ -94,6 +94,7 @@ export async function fetchIpLocation() {
 /**
  * Crée un nouveau post
  * Backend: POST /api/post (postCreateHandler)
+ * Attend: { title, snippet, category, sub_category, lat, lon, author }
  */
 export async function createPost(payload) {
   const res = await fetch(`${API_BASE}/post`, {
diff --git a/src/components/Map/MapView.jsx b/src/components/Map/MapView.jsx
index 4a58a1a..5aaf42b 100644
--- a/src/components/Map/MapView.jsx
+++ b/src/components/Map/MapView.jsx
@@ -3,10 +3,12 @@ import maplibregl from "maplibre-gl";
 import "maplibre-gl/dist/maplibre-gl.css";
 import { fetchPosts, fetchIpLocation, createPost } from "../../api/client";
 
-/* ------------ UTILS -------------- */
+/* ------------ CONSTANTES LOCALSTORAGE -------------- */
 const LAST_POS_KEY = "sociowire:lastPosition"; // position utilisateur (GPS/IP)
 const LAST_VIEW_KEY = "sociowire:lastView";    // dernière vue carte (centre+zoom)
 
+/* ------------ UTILS -------------- */
+
 // petite haversine pour estimer le rayon en km en fonction du zoom
 function haversineKm(lat1, lon1, lat2, lon2) {
   const R = 6371;
@@ -84,15 +86,17 @@ function categoryCode(mainFilter) {
   }
 }
 
-/* ------------ CATEGORIES -------------- */
+/* ------------ CATEGORIES POUR LES CHIPS -------------- */
 const CATEGORY_MAP = {
   News: ["World", "Politics", "Tech", "Finance", "Local"],
   Friends: ["Nearby", "Chats", "Groups", "Stories", "Favs"],
   Events: ["Today", "Weekend", "Music", "Sports", "Local"],
   Market: ["Actu", "Tech", "Finan", "Sport", "Deals"],
-  Default: ["World", "Actu", "Tech", "Finan", "Sport"],
 };
 
+/* =====================================================
+   COMPONENT
+   ===================================================== */
 export default function MapView() {
   const containerRef = useRef(null);
   const mapRef = useRef(null);
@@ -101,9 +105,9 @@ export default function MapView() {
 
   const [status, setStatus] = useState("Loading posts...");
 
-  const [mainFilter, setMainFilter] = useState("Default"); // News/Friends/Events/Market
+  const [mainFilter, setMainFilter] = useState("News");  // News/Friends/Events/Market
   const [timeFilter, setTimeFilter] = useState("RECENT"); // NOW/TODAY/RECENT/PAST
-  const [subFilter, setSubFilter] = useState(null); // sous-catégorie du bas
+  const [subFilter, setSubFilter] = useState(null);       // sous-catégorie du bas
 
   const [userPosition, setUserPosition] = useState(null); // [lng, lat]
   const [reloadToken, setReloadToken] = useState(0);
@@ -127,13 +131,33 @@ export default function MapView() {
   const [isSaving, setIsSaving] = useState(false);
   const [saveError, setSaveError] = useState("");
 
-  /* ------------ INIT MAP -------------- */
+  /* ------------ INIT MAP (THEME BLEU NUIT + LAST VIEW) -------------- */
   useEffect(() => {
     if (!containerRef.current) return;
 
     const map = new maplibregl.Map({
       container: containerRef.current,
-      style: "https://demotiles.maplibre.org/style.json",
+      // Thème nuit bleu CARTO + villes
+      style: {
+        version: 8,
+        sources: {
+          "carto-dark": {
+            type: "raster",
+            tiles: [
+              "https://a.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png",
+            ],
+            tileSize: 256,
+            attribution: "© OpenStreetMap contributors © CARTO",
+          },
+        },
+        layers: [
+          {
+            id: "carto-dark-layer",
+            type: "raster",
+            source: "carto-dark",
+          },
+        ],
+      },
       center: [-95, 40],
       zoom: 3.5,
       pitch: 45,
@@ -274,8 +298,7 @@ export default function MapView() {
   }, [hasLastView]);
 
   /* ------------ SOUS-CATEGORIES (bas) -------------- */
-  const bottomCategories =
-    CATEGORY_MAP[mainFilter] || CATEGORY_MAP.Default;
+  const bottomCategories = CATEGORY_MAP[mainFilter] || [];
 
   useEffect(() => {
     if (!bottomCategories.length) return;
@@ -475,9 +498,9 @@ export default function MapView() {
     setDraftTitle("");
     setDraftBody("");
 
-    const main = mainFilter === "Default" ? "News" : mainFilter;
+    const main = mainFilter || "News";
     setDraftCategory(main);
-    const list = CATEGORY_MAP[main] || CATEGORY_MAP.Default;
+    const list = CATEGORY_MAP[main] || CATEGORY_MAP.News;
     setDraftSubCategory(list[0]);
     setDraftCoords(null);
   };
@@ -651,7 +674,7 @@ export default function MapView() {
               onChange={(e) => {
                 const cat = e.target.value;
                 setDraftCategory(cat);
-                const list = CATEGORY_MAP[cat] || CATEGORY_MAP.Default;
+                const list = CATEGORY_MAP[cat] || CATEGORY_MAP.News;
                 setDraftSubCategory(list[0]);
               }}
             >
@@ -666,7 +689,7 @@ export default function MapView() {
               value={draftSubCategory}
               onChange={(e) => setDraftSubCategory(e.target.value)}
             >
-              {(CATEGORY_MAP[draftCategory] || CATEGORY_MAP.Default).map(
+              {(CATEGORY_MAP[draftCategory] || CATEGORY_MAP.News).map(
                 (sub) => (
                   <option key={sub} value={sub}>
                     {sub}