diff --git a/admin-web/AUTH_SETUP.md b/admin-web/AUTH_SETUP.md
new file mode 100644
index 0000000..1e763f9
--- /dev/null
+++ b/admin-web/AUTH_SETUP.md
@@ -0,0 +1,101 @@
+# Authentication Setup Guide
+
+## Overview
+This guide sets up full server-side authentication for the TabataFit Admin panel.
+
+## Prerequisites
+- Supabase project running (local or hosted)
+- Admin-web Next.js app running
+- Database schema already applied
+
+## Step 1: Configure Supabase Dashboard
+
+1. Go to your Supabase Dashboard → Authentication → Providers
+2. **Enable Email Provider**
+3. **Disable "Confirm email"** (for easier testing, re-enable for production)
+4. Go to Authentication → URL Configuration
+5. Set **Site URL**: `http://localhost:3000` (or your production URL)
+6. Add **Redirect URLs**: `http://localhost:3000/**`
+
+## Step 2: Create Admin User
+
+### Option A: Via Supabase Dashboard (Easiest)
+1. Go to Supabase Dashboard → Authentication → Users
+2. Click "Add user" or "Invite user"
+3. Enter email: `admin@tabatafit.com`
+4. Set password: Your chosen password
+5. Click "Create user"
+6. Copy the user's UUID (click on the user to see details)
+
+### Option B: Via Login Page
+1. Go to `http://localhost:3000/login`
+2. Click "Sign up" (if available) or use dashboard method above
+
+## Step 3: Add User to Admin Table
+
+**Important**: After creating the user, you MUST add them to the admin_users table.
+
+Run this SQL in Supabase SQL Editor:
+
+```sql
+-- Replace with your actual email or UUID
+INSERT INTO public.admin_users (id, email, role)
+SELECT id, email, 'admin'
+FROM auth.users
+WHERE email = 'admin@tabatafit.com'
+ON CONFLICT (id) DO NOTHING;
+```
+
+Or if you have the UUID:
+```sql
+INSERT INTO public.admin_users (id, email, role) 
+VALUES ('paste-uuid-here', 'admin@tabatafit.com', 'admin');
+```
+
+## Step 4: Verify Setup
+
+Run this to confirm:
+```sql
+SELECT au.id, au.email, au.role, u.email as auth_email
+FROM public.admin_users au
+JOIN auth.users u ON au.id = u.id;
+```
+
+You should see your admin user listed.
+
+## Step 5: Login
+
+1. Go to `http://localhost:3000/login`
+2. Enter email: `admin@tabatafit.com`
+3. Enter password: (the one you set)
+4. You should be redirected to the dashboard
+
+## Troubleshooting
+
+### "Not authorized as admin" error
+- User exists in auth.users but not in admin_users table
+- Run Step 3 SQL to add them
+
+### "Failed to fetch" errors
+- Check that EXPO_PUBLIC_SUPABASE_URL is set in .env.local
+- For admin-web, also add NEXT_PUBLIC_SUPABASE_URL with same value
+
+### Still can't create workouts
+- Verify you're logged in (check browser cookies)
+- Check that admin_users table has your user
+- Check RLS policies are applied correctly
+
+## Default Credentials (Example)
+
+**Email**: `admin@tabatafit.com`
+**Password**: (You choose during setup)
+
+**Note**: Change this to a secure password in production!
+
+## Security Notes
+
+1. **Production**: Enable email confirmations
+2. **Production**: Use strong passwords
+3. **Production**: Enable 2FA if available
+4. **Production**: Restrict CORS origins in Supabase
+5. **Production**: Use environment-specific admin credentials
\ No newline at end of file
diff --git a/admin-web/app/login/page.tsx b/admin-web/app/login/page.tsx
index 0f84307..d38bacc 100644
--- a/admin-web/app/login/page.tsx
+++ b/admin-web/app/login/page.tsx
@@ -23,16 +23,19 @@ export default function LoginPage() {
     setError("");
 
     try {
-      const { error: authError } = await supabase.auth.signInWithPassword({
+      const { data: authData, error: authError } = await supabase.auth.signInWithPassword({
         email,
         password,
       });
 
       if (authError) throw authError;
+      if (!authData.user) throw new Error("Login failed");
 
+      // Check if the logged-in user is in admin_users table
       const { data: adminUser } = await supabase
         .from("admin_users")
         .select("*")
+        .eq("id", authData.user.id)
         .single();
 
       if (!adminUser) {
diff --git a/admin-web/middleware.ts b/admin-web/middleware.ts
new file mode 100644
index 0000000..f42a481
--- /dev/null
+++ b/admin-web/middleware.ts
@@ -0,0 +1,57 @@
+import { createServerClient } from '@supabase/ssr'
+import { NextResponse, type NextRequest } from 'next/server'
+
+export async function middleware(request: NextRequest) {
+  let response = NextResponse.next({
+    request: {
+      headers: request.headers,
+    },
+  })
+
+  const supabase = createServerClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
+    {
+      cookies: {
+        get(name: string) {
+          return request.cookies.get(name)?.value
+        },
+        set(name: string, value: string, options: any) {
+          request.cookies.set({ name, value, ...options })
+          response = NextResponse.next({
+            request: { headers: request.headers },
+          })
+          response.cookies.set({ name, value, ...options })
+        },
+        remove(name: string, options: any) {
+          request.cookies.set({ name, value: '', ...options })
+          response = NextResponse.next({
+            request: { headers: request.headers },
+          })
+          response.cookies.set({ name, value: '', ...options })
+        },
+      },
+    }
+  )
+
+  // Check if user is authenticated
+  const { data: { user } } = await supabase.auth.getUser()
+
+  // Protect all routes except /login
+  if (!user && request.nextUrl.pathname !== '/login') {
+    return NextResponse.redirect(new URL('/login', request.url))
+  }
+
+  // If user is authenticated and tries to access login, redirect to home
+  if (user && request.nextUrl.pathname === '/login') {
+    return NextResponse.redirect(new URL('/', request.url))
+  }
+
+  return response
+}
+
+export const config = {
+  matcher: [
+    '/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)',
+  ],
+}
\ No newline at end of file
diff --git a/admin-web/package-lock.json b/admin-web/package-lock.json
index f759d8a..3cd33ec 100644
--- a/admin-web/package-lock.json
+++ b/admin-web/package-lock.json
@@ -8,6 +8,7 @@
       "name": "my-app",
       "version": "0.1.0",
       "dependencies": {
+        "@supabase/ssr": "^0.9.0",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "lucide-react": "^0.576.0",
@@ -4060,6 +4061,117 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@supabase/auth-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/auth-js/-/auth-js-2.99.2.tgz",
+      "integrity": "sha512-uRGNXMKEw4VhwouNW7N0XDAGqJP9redHNDmWi17dTrcO1lvFfyRiXsqqfgnVC8aqtRn8kLkLPEzHjiRWsni+oQ==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "tslib": "2.8.1"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@supabase/functions-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/functions-js/-/functions-js-2.99.2.tgz",
+      "integrity": "sha512-xuXQARvjdfB1UPK1yUceZ5EGjOLkVz4rBAaloS9foXiAuseWEdgWBCxkIAFRxGBLGX8Uzo8kseq90jhPb+07Vg==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "tslib": "2.8.1"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@supabase/postgrest-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/postgrest-js/-/postgrest-js-2.99.2.tgz",
+      "integrity": "sha512-ueiOVkbkTQ7RskwVmjR8zxWYw3VKOMxo1+qep+Dx/SgApqyhWBGd92waQb45tbLc7ydB5x8El8utXOLQTuTojQ==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "tslib": "2.8.1"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@supabase/realtime-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/realtime-js/-/realtime-js-2.99.2.tgz",
+      "integrity": "sha512-J6Jm9601dkpZf3+EJ48ki2pM4sFtCNm/BI0l8iEnrczgg+JSEQkMoOW5VSpM54t0pNs69bsz5PTmYJahDZKiIQ==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@types/phoenix": "^1.6.6",
+        "@types/ws": "^8.18.1",
+        "tslib": "2.8.1",
+        "ws": "^8.18.2"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@supabase/ssr": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/@supabase/ssr/-/ssr-0.9.0.tgz",
+      "integrity": "sha512-UFY6otYV3yqCgV+AyHj80vNkTvbf1Gas2LW4dpbQ4ap6p6v3eB2oaDfcI99jsuJzwVBCFU4BJI+oDYyhNk1z0Q==",
+      "license": "MIT",
+      "dependencies": {
+        "cookie": "^1.0.2"
+      },
+      "peerDependencies": {
+        "@supabase/supabase-js": "^2.97.0"
+      }
+    },
+    "node_modules/@supabase/ssr/node_modules/cookie": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
+      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
+    "node_modules/@supabase/storage-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/storage-js/-/storage-js-2.99.2.tgz",
+      "integrity": "sha512-V/FF8kX8JGSefsVCG1spCLSrHdNR/JFeUMn1jS9KG/Eizjx+evtdKQKLJXFgIylY/bKTXKhc2SYDPIGrIhzsug==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "iceberg-js": "^0.8.1",
+        "tslib": "2.8.1"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@supabase/supabase-js": {
+      "version": "2.99.2",
+      "resolved": "https://registry.npmjs.org/@supabase/supabase-js/-/supabase-js-2.99.2.tgz",
+      "integrity": "sha512-179rn5wq0wBAqqGwAwR7TUGg2NOaP+fkd5FCVbYJXby85fsRNPFoNJN8YRBepqX2tN7JJcnTjqaAMXuNjiyisA==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@supabase/auth-js": "2.99.2",
+        "@supabase/functions-js": "2.99.2",
+        "@supabase/postgrest-js": "2.99.2",
+        "@supabase/realtime-js": "2.99.2",
+        "@supabase/storage-js": "2.99.2"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
     "node_modules/@swc/helpers": {
       "version": "0.5.15",
       "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz",
@@ -4584,12 +4696,18 @@
       "version": "20.19.35",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.35.tgz",
       "integrity": "sha512-Uarfe6J91b9HAUXxjvSOdiO2UPOKLm07Q1oh0JHxoZ1y8HoqxDAu3gVrsrOHeiio0kSsoVBt4wFrKOm0dKxVPQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "undici-types": "~6.21.0"
       }
     },
+    "node_modules/@types/phoenix": {
+      "version": "1.6.7",
+      "resolved": "https://registry.npmjs.org/@types/phoenix/-/phoenix-1.6.7.tgz",
+      "integrity": "sha512-oN9ive//QSBkf19rfDv45M7eZPi0eEXylht2OLEXicu5b4KoQ1OzXIw+xDSGWxSxe1JmepRR/ZH283vsu518/Q==",
+      "license": "MIT",
+      "peer": true
+    },
     "node_modules/@types/react": {
       "version": "19.2.14",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
@@ -4624,6 +4742,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/ws": {
+      "version": "8.18.1",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.18.1.tgz",
+      "integrity": "sha512-ThVF6DCVhA8kUGy+aazFQ4kXQ7E1Ty7A3ypFOe0IcJV8O/M511G99AW24irKrW56Wt44yG9+ij8FaqoBGkuBXg==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "8.56.1",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.56.1.tgz",
@@ -8382,6 +8510,16 @@
         "node": ">=18.18.0"
       }
     },
+    "node_modules/iceberg-js": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/iceberg-js/-/iceberg-js-0.8.1.tgz",
+      "integrity": "sha512-1dhVQZXhcHje7798IVM+xoo/1ZdVfzOMIc8/rgVSijRK38EDqOJoGula9N/8ZI5RD8QTxNQtK/Gozpr+qUqRRA==",
+      "license": "MIT",
+      "peer": true,
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
     "node_modules/iconv-lite": {
       "version": "0.7.2",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.7.2.tgz",
@@ -12743,7 +12881,6 @@
       "version": "6.21.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
       "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/unicorn-magic": {
@@ -13661,6 +13798,28 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/ws": {
+      "version": "8.19.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
+      "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
+      "license": "MIT",
+      "peer": true,
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/wsl-utils": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/wsl-utils/-/wsl-utils-0.3.1.tgz",
diff --git a/admin-web/package.json b/admin-web/package.json
index f70d2a0..a48ecc6 100644
--- a/admin-web/package.json
+++ b/admin-web/package.json
@@ -12,6 +12,7 @@
     "test:coverage": "vitest run --coverage"
   },
   "dependencies": {
+    "@supabase/ssr": "^0.9.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-react": "^0.576.0",
diff --git a/supabase/setup-admin.sql b/supabase/setup-admin.sql
new file mode 100644
index 0000000..3d0211c
--- /dev/null
+++ b/supabase/setup-admin.sql
@@ -0,0 +1,44 @@
+-- ============================================================
+-- Setup: Initial Admin User and Authentication
+-- ============================================================
+-- Run this SQL after creating your first user in Supabase Auth
+
+-- Step 1: Create helper function to check admin status
+CREATE OR REPLACE FUNCTION is_admin(user_id UUID)
+RETURNS BOOLEAN AS $$
+BEGIN
+  RETURN EXISTS (
+    SELECT 1 FROM public.admin_users 
+    WHERE id = user_id
+  );
+END;
+$$ LANGUAGE plpgsql SECURITY DEFINER;
+
+-- Step 2: Add initial admin user
+-- Method A: If user already exists in auth.users, run this:
+/*
+INSERT INTO public.admin_users (id, email, role)
+SELECT id, email, 'admin'
+FROM auth.users
+WHERE email = 'admin@tabatafit.com'
+ON CONFLICT (id) DO NOTHING;
+*/
+
+-- Method B: Insert directly with known UUID
+-- INSERT INTO public.admin_users (id, email, role) 
+-- VALUES ('paste-uuid-here', 'admin@tabatafit.com', 'admin');
+
+-- Step 3: Verify admin setup
+SELECT 
+  au.id,
+  au.email,
+  au.role,
+  au.created_at,
+  u.email as auth_email
+FROM public.admin_users au
+JOIN auth.users u ON au.id = u.id;
+
+-- Step 4: List all users in auth (to find your UUID)
+SELECT id, email, created_at, last_sign_in_at
+FROM auth.users
+ORDER BY created_at DESC;
\ No newline at end of file