diff --git a/src/stores/auth.ts b/src/stores/auth.ts
new file mode 100644
index 0000000..45da8f9
--- /dev/null
+++ b/src/stores/auth.ts
@@ -0,0 +1,73 @@
+import { defineStore } from 'pinia';
+import { ref, computed } from 'vue';
+import { api } from '@/api/client';
+import type { User } from '@/api/generated/main';
+
+export const useAuthStore = defineStore('auth', () => {
+  const user = ref<User | null>(null);
+  const loading = ref(false);
+  const error = ref<string | null>(null);
+
+  const isAuthenticated = computed(() => !!user.value);
+  const isAdmin = computed(() => user.value?.roles?.includes('admin') ?? false);
+
+  async function login(email: string, password: string) {
+    loading.value = true;
+    error.value = null;
+    
+    try {
+      const response = await api.login({ email, password });
+      if (response.error) {
+        error.value = response.error;
+        return false;
+      }
+      await fetchMe();
+      return true;
+    } catch (err) {
+      error.value = err instanceof Error ? err.message : 'Login failed';
+      return false;
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  async function fetchMe() {
+    loading.value = true;
+    try {
+      const response = await api.getMe();
+      if (response.error) {
+        error.value = response.error;
+        user.value = null;
+      } else if (response.user) {
+        user.value = response.user;
+      }
+    } catch (err) {
+      user.value = null;
+      throw err;
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  async function logout() {
+    await api.logout();
+    user.value = null;
+    error.value = null;
+  }
+
+  function hasRole(role: string): boolean {
+    return user.value?.roles?.includes(role) ?? false;
+  }
+
+  return {
+    user,
+    loading,
+    error,
+    isAuthenticated,
+    isAdmin,
+    login,
+    fetchMe,
+    logout,
+    hasRole,
+  };
+});