diff --git a/endpoints/signup.post.py b/endpoints/signup.post.py
index 47f7fae..89e8501 100644
--- a/endpoints/signup.post.py
+++ b/endpoints/signup.post.py
@@ -1,33 +1,50 @@
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, Depends, HTTPException
 from core.database import fake_users_db
 import uuid
+from typing import Optional
 
 router = APIRouter()
 
-@router.post("/signup")
-async def signup_demo(
-    username: str = "new_user",
-    email: str = "user@example.com",
-    password: str = "securepassword123"
+@router.post("/register")
+async def register_user(
+    username: str,
+    email: str,
+    password: str,
+    full_name: Optional[str] = None
 ):
-    """Demo signup endpoint"""
+    """Register new user endpoint"""
     if username in fake_users_db:
-        raise HTTPException(status_code=400, detail="Username already exists")
+        raise HTTPException(status_code=400, detail="Username already registered")
+    
+    if any(user["email"] == email for user in fake_users_db.values()):
+        raise HTTPException(status_code=400, detail="Email already registered")
     
     user_id = str(uuid.uuid4())
     fake_users_db[username] = {
         "id": user_id,
+        "username": username,
         "email": email,
         "password": password,
-        "disabled": False
+        "full_name": full_name,
+        "disabled": False,
+        "created_at": str(uuid.uuid1())
     }
     
     return {
-        "message": "User created successfully",
-        "user_id": user_id,
-        "username": username,
+        "message": "User registered successfully",
+        "user": {
+            "id": user_id,
+            "username": username,
+            "email": email,
+            "full_name": full_name
+        },
         "next_steps": [
-            "Verify your email (demo)",
-            "Complete profile setup"
-        ]
-    }
+            "Verify your email address",
+            "Complete your profile",
+            "Set up two-factor authentication"
+        ],
+        "features": {
+            "rate_limit": 100,
+            "trial_period_days": 30
+        }
+    }
\ No newline at end of file