Add PlayerCode for enhanced score tracking and host validation logic in cooperative mode. Optimize UI for mobile devices with new responsive styles.

cmd/server/main.go

@@ -148,6 +148,14 @@ func main() {
 		// Spieler hinzufügen (ID, Name)
 		room.AddPlayer(playerID, req.Name)
 
+		// Falls Host, speichere PlayerCode
+		if req.IsHost && req.PlayerCode != "" {
+			room.Mutex.Lock()
+			room.HostPlayerCode = req.PlayerCode
+			room.Mutex.Unlock()
+			log.Printf("🔑 Host PlayerCode gesetzt: %s", req.PlayerCode)
+		}
+
 		// Session speichern
 		playerSessions[playerID] = room
 		log.Printf("➡️ Spieler '%s' ist Raum '%s' beigetreten.", playerID, roomID)
@@ -160,7 +168,7 @@ func main() {
 
 	// 4. HANDLER: GAME START (broadcast - alle Pods empfangen, nur der mit dem Raum reagiert)
 	_, _ = ec.Subscribe("game.start", func(req *game.StartRequest) {
-		log.Printf("▶️ START empfangen: RoomID=%s", req.RoomID)
+		log.Printf("▶️ START empfangen: RoomID=%s, PlayerID=%s", req.RoomID, req.PlayerID)
 
 		mu.RLock()
 		room, exists := rooms[req.RoomID]
@@ -168,9 +176,17 @@ func main() {
 
 		if exists {
 			room.Mutex.Lock()
+
+			// Prüfe ob der Spieler der Host ist
+			if room.HostID != "" && room.HostID != req.PlayerID {
+				log.Printf("⚠️ Spieler '%s' ist nicht Host von Raum '%s' (Host: %s)", req.PlayerID, req.RoomID, room.HostID)
+				room.Mutex.Unlock()
+				return
+			}
+
 			room.StartCountdown()
 			room.Mutex.Unlock()
-			log.Printf("🎮 Raum '%s' Countdown gestartet", req.RoomID)
+			log.Printf("🎮 Raum '%s' Countdown gestartet von Host '%s'", req.RoomID, req.PlayerID)
 		} else {
 			log.Printf("❌ Raum '%s' nicht gefunden", req.RoomID)
 		}