diff --git a/backend/app/main.py b/backend/app/main.py
index 05ce80e..2bdcf00 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -1,6 +1,10 @@
 # backend/app/main.py
-from fastapi import FastAPI
+import os
+
+from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import FileResponse
+from fastapi.staticfiles import StaticFiles
 
 from app.api.admin import router as admin_router
 from app.api.auth import router as auth_router
@@ -36,3 +40,20 @@ app.include_router(reports_router, prefix="/api/reports", tags=["reports"])
 @app.get("/api/health")
 def health_check():
     return {"status": "ok"}
+
+
+# --- Serve frontend SPA ---
+_frontend_dist = os.path.join(
+    os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
+    "frontend", "dist",
+)
+
+if os.path.isdir(_frontend_dist):
+    app.mount("/assets", StaticFiles(directory=os.path.join(_frontend_dist, "assets")), name="static")
+
+    @app.get("/{full_path:path}")
+    async def serve_spa(request: Request, full_path: str):
+        file_path = os.path.join(_frontend_dist, full_path)
+        if full_path and os.path.isfile(file_path):
+            return FileResponse(file_path)
+        return FileResponse(os.path.join(_frontend_dist, "index.html"))