diff --git a/backend/__pycache__/main.cpython-313.pyc b/backend/__pycache__/main.cpython-313.pyc
index 72cc141..be7bf31 100644
Binary files a/backend/__pycache__/main.cpython-313.pyc and b/backend/__pycache__/main.cpython-313.pyc differ
diff --git a/backend/__pycache__/user_db_utils.cpython-313.pyc b/backend/__pycache__/user_db_utils.cpython-313.pyc
index e6126ee..c500bba 100644
Binary files a/backend/__pycache__/user_db_utils.cpython-313.pyc and b/backend/__pycache__/user_db_utils.cpython-313.pyc differ
diff --git a/backend/main.py b/backend/main.py
index e6a755e..a52d7db 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -4,7 +4,7 @@ from datetime import timedelta
 
 from fastapi import FastAPI, HTTPException, Query, Depends
 from fastapi.middleware.cors import CORSMiddleware
-from pydantic import BaseModel, EmailStr
+from pydantic import BaseModel, EmailStr, field_validator
 import os
 
 import uvicorn
@@ -62,6 +62,18 @@ class UserRegister(BaseModel):
     username: str
     email: EmailStr
     password: str
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    display_name: str
+    
+    @field_validator('username')
+    @classmethod
+    def username_must_be_english(cls, v: str) -> str:
+        if not v.isascii():
+            raise ValueError('שם משתמש חייב להיות באנגלית בלבד')
+        if not all(c.isalnum() or c in '_-' for c in v):
+            raise ValueError('שם משתמש יכול להכיל רק אותיות, מספרים, _ ו-')
+        return v
 
 
 class UserLogin(BaseModel):
@@ -78,6 +90,9 @@ class UserResponse(BaseModel):
     id: int
     username: str
     email: str
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    display_name: str
 
 
 app = FastAPI(
@@ -277,13 +292,23 @@ def register(user: UserRegister):
     print(f"[REGISTER] Hashing password...")
     password_hash = hash_password(user.password)
     print(f"[REGISTER] Creating user in database...")
-    new_user = create_user(user.username, user.email, password_hash)
+    new_user = create_user(
+        user.username, 
+        user.email, 
+        password_hash,
+        user.first_name,
+        user.last_name,
+        user.display_name
+    )
     print(f"[REGISTER] User created successfully: {new_user['id']}")
     
     return UserResponse(
         id=new_user["id"],
         username=new_user["username"],
-        email=new_user["email"]
+        email=new_user["email"],
+        first_name=new_user.get("first_name"),
+        last_name=new_user.get("last_name"),
+        display_name=new_user["display_name"]
     )
 
 
@@ -326,7 +351,10 @@ def get_me(current_user: dict = Depends(get_current_user)):
     return UserResponse(
         id=user["id"],
         username=user["username"],
-        email=user["email"]
+        email=user["email"],
+        first_name=user.get("first_name"),
+        last_name=user.get("last_name"),
+        display_name=user["display_name"]
     )
 
 
diff --git a/backend/schema.sql b/backend/schema.sql
index 76916b5..88bfd34 100644
--- a/backend/schema.sql
+++ b/backend/schema.sql
@@ -4,6 +4,9 @@ CREATE TABLE IF NOT EXISTS users (
     username TEXT UNIQUE NOT NULL,
     email TEXT UNIQUE NOT NULL,
     password_hash TEXT NOT NULL,
+    first_name TEXT,
+    last_name TEXT,
+    display_name TEXT NOT NULL,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );
 
diff --git a/backend/user_db_utils.py b/backend/user_db_utils.py
index fd37d36..264da28 100644
--- a/backend/user_db_utils.py
+++ b/backend/user_db_utils.py
@@ -14,18 +14,21 @@ def get_db_connection():
     )
 
 
-def create_user(username: str, email: str, password_hash: str):
+def create_user(username: str, email: str, password_hash: str, first_name: str = None, last_name: str = None, display_name: str = None):
     """Create a new user"""
     conn = get_db_connection()
     cur = conn.cursor(cursor_factory=RealDictCursor)
     try:
+        # Use display_name if provided, otherwise use username
+        final_display_name = display_name if display_name else username
+        
         cur.execute(
             """
-            INSERT INTO users (username, email, password_hash)
-            VALUES (%s, %s, %s)
-            RETURNING id, username, email, created_at
+            INSERT INTO users (username, email, password_hash, first_name, last_name, display_name)
+            VALUES (%s, %s, %s, %s, %s, %s)
+            RETURNING id, username, email, first_name, last_name, display_name, created_at
             """,
-            (username, email, password_hash)
+            (username, email, password_hash, first_name, last_name, final_display_name)
         )
         user = cur.fetchone()
         conn.commit()
@@ -41,7 +44,7 @@ def get_user_by_username(username: str):
     cur = conn.cursor(cursor_factory=RealDictCursor)
     try:
         cur.execute(
-            "SELECT id, username, email, password_hash, created_at FROM users WHERE username = %s",
+            "SELECT id, username, email, password_hash, first_name, last_name, display_name, created_at FROM users WHERE username = %s",
             (username,)
         )
         user = cur.fetchone()
@@ -57,7 +60,7 @@ def get_user_by_email(email: str):
     cur = conn.cursor(cursor_factory=RealDictCursor)
     try:
         cur.execute(
-            "SELECT id, username, email, password_hash, created_at FROM users WHERE email = %s",
+            "SELECT id, username, email, password_hash, first_name, last_name, display_name, created_at FROM users WHERE email = %s",
             (email,)
         )
         user = cur.fetchone()
@@ -73,7 +76,7 @@ def get_user_by_id(user_id: int):
     cur = conn.cursor(cursor_factory=RealDictCursor)
     try:
         cur.execute(
-            "SELECT id, username, email, created_at FROM users WHERE id = %s",
+            "SELECT id, username, email, first_name, last_name, display_name, created_at FROM users WHERE id = %s",
             (user_id,)
         )
         user = cur.fetchone()
diff --git a/frontend/index.html b/frontend/index.html
index 259fcb7..577d29f 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🍽️</text></svg>">
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>My Recipes | מתכונים שלי</title>
+    <title>My Recipes | המתכונים שלי</title>
     <!-- Load environment variables before app starts -->
     <script src="/env.js"></script>
   </head>
diff --git a/frontend/src/App.css b/frontend/src/App.css
index 4780b9d..b88d521 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -765,7 +765,7 @@ body {
 }
 
 [data-theme="light"] body {
-  background: linear-gradient(180deg, #ac8d75 0%, #f6f8fa 100%);
+  background: linear-gradient(180deg, #ac8d75 0%, #ede9e5 100%);
   color: var(--text-main);
 }
 
@@ -1292,17 +1292,17 @@ html {
   align-items: center;
   justify-content: center;
   padding: 2rem;
-  background: var(--bg);
+  background: radial-gradient(circle at top, #0f172a 0, #020617 55%);
 }
 
 .auth-card {
   width: 100%;
   max-width: 420px;
-  background: var(--card);
-  border: 1px solid var(--border);
+  background: #020617;
+  border: 1px solid var(--border-subtle);
   border-radius: 16px;
   padding: 2rem;
-  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
+  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
 }
 
 .auth-title {
@@ -1349,3 +1349,14 @@ html {
 .full-width {
   width: 100%;
 }
+
+/* Light mode auth styles */
+[data-theme="light"] .auth-container {
+  background: linear-gradient(180deg, #ac8d75 0%, #ede9e5 100%);
+}
+
+[data-theme="light"] .auth-card {
+  background: #d1b29b;
+  border: 1px solid rgba(107, 114, 128, 0.2);
+  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
+}
diff --git a/frontend/src/App.jsx b/frontend/src/App.jsx
index 5948a98..467216d 100644
--- a/frontend/src/App.jsx
+++ b/frontend/src/App.jsx
@@ -41,6 +41,7 @@ function App() {
   const [editingRecipe, setEditingRecipe] = useState(null);
 
   const [deleteModal, setDeleteModal] = useState({ isOpen: false, recipeId: null, recipeName: "" });
+  const [logoutModal, setLogoutModal] = useState(false);
   const [toasts, setToasts] = useState([]);
   const [theme, setTheme] = useState(() => {
     try {
@@ -249,11 +250,17 @@ function App() {
   };
 
   const handleLogout = () => {
+    setLogoutModal(true);
+  };
+
+  const confirmLogout = () => {
     removeToken();
     setUser(null);
     setIsAuthenticated(false);
     setRecipes([]);
     setSelectedRecipe(null);
+    setLogoutModal(false);
+    addToast('התנתקת בהצלחה', 'success');
   };
 
   // Show loading state while checking auth
@@ -275,7 +282,7 @@ function App() {
       {/* User greeting above TopBar */}
       {isAuthenticated && user && (
         <div className="user-greeting-header">
-          שלום, {user.username} 👋
+          שלום, {user.display_name || user.username} 👋
         </div>
       )}
       
@@ -313,10 +320,7 @@ function App() {
               />
             ) : (
               <Register
-                onSuccess={() => {
-                  addToast("נרשמת בהצלחה! כעת התחבר", "success");
-                  setAuthView("login");
-                }}
+                onSuccess={handleLoginSuccess}
                 onSwitchToLogin={() => setAuthView("login")}
               />
             )}
@@ -430,6 +434,17 @@ function App() {
         onCancel={handleCancelDelete}
       />
 
+      <Modal
+        isOpen={logoutModal}
+        title="התנתקות"
+        message="האם אתה בטוח שברצונך להתנתק?"
+        confirmText="התנתק"
+        cancelText="ביטול"
+        isDangerous={false}
+        onConfirm={confirmLogout}
+        onCancel={() => setLogoutModal(false)}
+      />
+
       <ToastContainer toasts={toasts} onRemove={removeToast} />
     </div>
   );
diff --git a/frontend/src/authApi.js b/frontend/src/authApi.js
index 626dd1d..e6ae1dc 100644
--- a/frontend/src/authApi.js
+++ b/frontend/src/authApi.js
@@ -8,11 +8,18 @@ const getApiBase = () => {
 
 const API_BASE = getApiBase();
 
-export async function register(username, email, password) {
+export async function register(username, email, password, firstName, lastName, displayName) {
   const res = await fetch(`${API_BASE}/auth/register`, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
-    body: JSON.stringify({ username, email, password }),
+    body: JSON.stringify({ 
+      username, 
+      email, 
+      password,
+      first_name: firstName,
+      last_name: lastName,
+      display_name: displayName
+    }),
   });
   if (!res.ok) {
     const error = await res.json();
diff --git a/frontend/src/components/Register.jsx b/frontend/src/components/Register.jsx
index 01d197f..40d1bdc 100644
--- a/frontend/src/components/Register.jsx
+++ b/frontend/src/components/Register.jsx
@@ -1,11 +1,14 @@
 import { useState } from "react";
-import { register } from "../authApi";
+import { register, login, saveToken } from "../authApi";
 
 function Register({ onSuccess, onSwitchToLogin }) {
   const [username, setUsername] = useState("");
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
   const [confirmPassword, setConfirmPassword] = useState("");
+  const [firstName, setFirstName] = useState("");
+  const [lastName, setLastName] = useState("");
+  const [displayName, setDisplayName] = useState("");
   const [error, setError] = useState("");
   const [loading, setLoading] = useState(false);
 
@@ -24,12 +27,21 @@ function Register({ onSuccess, onSwitchToLogin }) {
       return;
     }
 
+    if (!displayName.trim()) {
+      setError("שם תצוגה הוא שדה חובה");
+      return;
+    }
+
     setLoading(true);
 
     try {
-      await register(username, email, password);
-      // After successful registration, switch to login
-      onSwitchToLogin();
+      // Register the user
+      await register(username, email, password, firstName, lastName, displayName);
+      
+      // Automatically login after successful registration
+      const response = await login(username, password);
+      saveToken(response.access_token);
+      onSuccess();
     } catch (err) {
       setError(err.message);
     } finally {
@@ -47,20 +59,54 @@ function Register({ onSuccess, onSwitchToLogin }) {
           {error && <div className="error-banner">{error}</div>}
 
           <div className="field">
-            <label>שם משתמש</label>
+            <label>שם פרטי</label>
+            <input
+              type="text"
+              value={firstName}
+              onChange={(e) => setFirstName(e.target.value)}
+              placeholder="שם פרטי (אופציונלי)"
+            />
+          </div>
+
+          <div className="field">
+            <label>שם משפחה</label>
+            <input
+              type="text"
+              value={lastName}
+              onChange={(e) => setLastName(e.target.value)}
+              placeholder="שם משפחה (אופציונלי)"
+            />
+          </div>
+
+          <div className="field">
+            <label>שם תצוגה *</label>
+            <input
+              type="text"
+              value={displayName}
+              onChange={(e) => setDisplayName(e.target.value)}
+              required
+              placeholder="איך תרצה שיופיע שמך?"
+              minLength={2}
+            />
+          </div>
+
+          <div className="field">
+            <label>שם משתמש * (אנגלית בלבד)</label>
             <input
               type="text"
               value={username}
               onChange={(e) => setUsername(e.target.value)}
               required
-              placeholder="בחר שם משתמש"
+              placeholder="username (English only)"
               autoComplete="username"
               minLength={3}
+              pattern="[a-zA-Z0-9_-]+"
+              title="שם משתמש יכול להכיל רק אותיות באנגלית, מספרים, _ ו-"
             />
           </div>
 
           <div className="field">
-            <label>אימייל</label>
+            <label>אימייל *</label>
             <input
               type="email"
               value={email}
@@ -72,7 +118,7 @@ function Register({ onSuccess, onSwitchToLogin }) {
           </div>
 
           <div className="field">
-            <label>סיסמה</label>
+            <label>סיסמה *</label>
             <input
               type="password"
               value={password}
@@ -85,7 +131,7 @@ function Register({ onSuccess, onSwitchToLogin }) {
           </div>
 
           <div className="field">
-            <label>אימות סיסמה</label>
+            <label>אימות סיסמה *</label>
             <input
               type="password"
               value={confirmPassword}