diff --git a/.gitignore b/.gitignore
index e64f907..709fd95 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ __pycache__/
 .env
 
 samples/
+/frontend/build/
diff --git a/frontend/src/App.js b/frontend/src/App.js
index 202e30c..a22bb7b 100644
--- a/frontend/src/App.js
+++ b/frontend/src/App.js
@@ -4,6 +4,9 @@ import AdminDashboard from "./pages/AdminDashboard";
 import MobileFormPage from "./pages/MobileFormPage";
 import DesktopSARPage from "./pages/DesktopSARPage";
 import AnalysisResult from "./pages/analysis/AnalysisResult";
+import Login from "./pages/Login";
+import ProtectedRoute from "./components/ProtectedRoute";
+import { AuthProvider } from "./context/AuthContext";
 import "./App.css";
 
 function ThemeProvider({ children }) {
@@ -41,20 +44,24 @@ function App() {
 
   return (
     <Router>
-      <ThemeProvider>
-        <Routes>
-          <Route path="/" element={<Navigate to={isMobile ? "/mobile" : "/desktop"} replace />} />
-          
-          <Route path="/sar" element={<DesktopSARPage />} />
-          <Route path="/desktop" element={<DesktopSARPage />} />
-          
-          <Route path="/analysis/:caseId" element={<AnalysisResult />} />
-          
-          <Route path="/admin/*" element={<AdminDashboard />} />
-          
-          <Route path="/mobile" element={<MobileFormPage />} />
-        </Routes>
-      </ThemeProvider>
+      <AuthProvider>
+        <ThemeProvider>
+          <Routes>
+            <Route path="/login" element={<Login />} />
+
+            <Route path="/" element={<Navigate to={isMobile ? "/mobile" : "/desktop"} replace />} />
+
+            <Route path="/sar" element={<ProtectedRoute><DesktopSARPage /></ProtectedRoute>} />
+            <Route path="/desktop" element={<ProtectedRoute><DesktopSARPage /></ProtectedRoute>} />
+
+            <Route path="/analysis/:caseId" element={<ProtectedRoute><AnalysisResult /></ProtectedRoute>} />
+
+            <Route path="/admin/*" element={<ProtectedRoute roles={["admin"]}><AdminDashboard /></ProtectedRoute>} />
+
+            <Route path="/mobile" element={<ProtectedRoute><MobileFormPage /></ProtectedRoute>} />
+          </Routes>
+        </ThemeProvider>
+      </AuthProvider>
     </Router>
   );
 }
diff --git a/frontend/src/api/client.js b/frontend/src/api/client.js
new file mode 100644
index 0000000..74185fa
--- /dev/null
+++ b/frontend/src/api/client.js
@@ -0,0 +1,102 @@
+// Единая точка выхода в API. Подставляет JWT из localStorage в каждый запрос
+// и централизованно обрабатывает 401: токен сбрасывается, а слушатели
+// (AuthContext) получают событие и уводят пользователя на /login.
+//
+// Раньше страницы дёргали fetch() напрямую без заголовка Authorization, из-за
+// чего защищённые роутеры (require_roles в cases/analyze/admin) отвечали
+// 401 {"detail":"Not authenticated"} — форма показывала это как ошибку.
+
+export const TOKEN_KEY = 'vector_token';
+export const UNAUTHORIZED_EVENT = 'vector:unauthorized';
+
+export function getToken() {
+  try {
+    return localStorage.getItem(TOKEN_KEY) || '';
+  } catch {
+    // Приватный режим / отключённое хранилище — работаем без сохранения.
+    return '';
+  }
+}
+
+export function setToken(token) {
+  try {
+    if (token) localStorage.setItem(TOKEN_KEY, token);
+    else localStorage.removeItem(TOKEN_KEY);
+  } catch {
+    /* storage недоступен — токен живёт только в памяти AuthContext */
+  }
+}
+
+export function clearToken() {
+  setToken('');
+}
+
+function notifyUnauthorized() {
+  clearToken();
+  window.dispatchEvent(new Event(UNAUTHORIZED_EVENT));
+}
+
+function authHeaders(extra) {
+  const headers = new Headers(extra || {});
+  const token = getToken();
+  if (token) headers.set('Authorization', `Bearer ${token}`);
+  return headers;
+}
+
+/**
+ * Обёртка над fetch: добавляет Bearer-токен и перехватывает 401.
+ * Возвращает обычный Response — вызывающий код проверяет response.ok как раньше.
+ */
+export async function apiFetch(path, options = {}) {
+  const { headers, body, ...rest } = options;
+  const finalHeaders = authHeaders(headers);
+
+  // FormData сама выставляет multipart-boundary: Content-Type не трогаем.
+  const isFormData = typeof FormData !== 'undefined' && body instanceof FormData;
+  if (body && !isFormData && !finalHeaders.has('Content-Type')) {
+    finalHeaders.set('Content-Type', 'application/json');
+  }
+
+  const response = await fetch(path, { ...rest, body, headers: finalHeaders });
+
+  if (response.status === 401) {
+    notifyUnauthorized();
+  }
+
+  return response;
+}
+
+/** apiFetch + разбор JSON и подъём detail из тела ошибки. */
+export async function apiJson(path, options = {}) {
+  const response = await apiFetch(path, options);
+  if (!response.ok) {
+    const payload = await response.json().catch(() => ({}));
+    throw new Error(payload.detail || `Ошибка запроса (${response.status})`);
+  }
+  return response.json();
+}
+
+/** POST /api/v1/auth/login — бэкенд ждёт OAuth2 form-urlencoded, не JSON. */
+export async function login(username, password) {
+  const form = new URLSearchParams();
+  form.set('username', username);
+  form.set('password', password);
+
+  const response = await fetch('/api/v1/auth/login', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+    body: form.toString(),
+  });
+
+  const payload = await response.json().catch(() => ({}));
+  if (!response.ok) {
+    throw new Error(payload.detail || 'Неверный логин или пароль');
+  }
+  setToken(payload.access_token);
+  return payload.access_token;
+}
+
+/** GET /api/v1/auth/me — проверка токена и получение роли. */
+export function fetchMe() {
+  return apiJson('/api/v1/auth/me');
+}
diff --git a/frontend/src/components/CaseForm/CaseForm.jsx b/frontend/src/components/CaseForm/CaseForm.jsx
index aa3fdac..9e3c668 100644
--- a/frontend/src/components/CaseForm/CaseForm.jsx
+++ b/frontend/src/components/CaseForm/CaseForm.jsx
@@ -5,6 +5,7 @@ import Step2Health from "./Step2Health";
 import Step2bPsychotype from "./Step2bPsychotype";
 import Step3Circumstances from "./Step3Circumstances";
 import Step4Environment from "./Step4Environment";
+import { apiFetch } from "../../api/client";
 import "./CaseForm.css";
 
 const INITIAL_DATA = {
@@ -106,9 +107,8 @@ const CaseForm = ({ isMobile = false }) => {
       };
       
       // Создаем карточку
-      const response = await fetch("/api/v1/cases", {
+      const response = await apiFetch("/api/v1/cases", {
         method: "POST",
-        headers: { "Content-Type": "application/json" },
         body: JSON.stringify(payload)
       });
       
diff --git a/frontend/src/components/ProtectedRoute.jsx b/frontend/src/components/ProtectedRoute.jsx
new file mode 100644
index 0000000..7ad0c49
--- /dev/null
+++ b/frontend/src/components/ProtectedRoute.jsx
@@ -0,0 +1,35 @@
+import React from 'react';
+import { Navigate, useLocation } from 'react-router-dom';
+
+import { useAuth } from '../context/AuthContext';
+
+/**
+ * Пускает дальше только с валидным токеном. Пока идёт первая проверка
+ * (/auth/me) — держим заглушку, иначе при живом токене будет ложный редирект.
+ * roles задаёт минимальные права: бэкенд всё равно проверяет их сам
+ * (require_roles), это лишь чтобы не показывать заведомо пустую страницу.
+ */
+function ProtectedRoute({ children, roles }) {
+  const { isAuthenticated, loading, user } = useAuth();
+  const location = useLocation();
+
+  if (loading) {
+    return <div className="login-loading">Проверка сессии…</div>;
+  }
+
+  if (!isAuthenticated) {
+    return <Navigate to="/login" replace state={{ from: location.pathname }} />;
+  }
+
+  if (roles && !roles.includes(user.role)) {
+    return (
+      <div className="login-loading">
+        Недостаточно прав: нужна роль {roles.join(' или ')}, у вас «{user.role}».
+      </div>
+    );
+  }
+
+  return children;
+}
+
+export default ProtectedRoute;
diff --git a/frontend/src/context/AuthContext.jsx b/frontend/src/context/AuthContext.jsx
new file mode 100644
index 0000000..3c91d67
--- /dev/null
+++ b/frontend/src/context/AuthContext.jsx
@@ -0,0 +1,79 @@
+import React, { createContext, useCallback, useContext, useEffect, useMemo, useState } from 'react';
+
+import {
+  UNAUTHORIZED_EVENT,
+  clearToken,
+  fetchMe,
+  getToken,
+  login as apiLogin,
+} from '../api/client';
+
+const AuthContext = createContext(null);
+
+export function AuthProvider({ children }) {
+  const [user, setUser] = useState(null);
+  // loading=true до первой проверки токена, иначе ProtectedRoute успеет
+  // редиректнуть на /login при живом токене в localStorage.
+  const [loading, setLoading] = useState(true);
+
+  const logout = useCallback(() => {
+    clearToken();
+    setUser(null);
+  }, []);
+
+  // Стартовая валидация сохранённого токена через /auth/me.
+  useEffect(() => {
+    let cancelled = false;
+
+    if (!getToken()) {
+      setLoading(false);
+      return undefined;
+    }
+
+    fetchMe()
+      .then((me) => {
+        if (!cancelled) setUser(me);
+      })
+      .catch(() => {
+        if (!cancelled) logout();
+      })
+      .finally(() => {
+        if (!cancelled) setLoading(false);
+      });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [logout]);
+
+  // Любой 401 из apiFetch (истёк токен, сменился JWT_SECRET) — выкидываем.
+  useEffect(() => {
+    const onUnauthorized = () => setUser(null);
+    window.addEventListener(UNAUTHORIZED_EVENT, onUnauthorized);
+    return () => window.removeEventListener(UNAUTHORIZED_EVENT, onUnauthorized);
+  }, []);
+
+  const signIn = useCallback(async (username, password) => {
+    await apiLogin(username, password);
+    const me = await fetchMe();
+    setUser(me);
+    return me;
+  }, []);
+
+  const value = useMemo(
+    () => ({ user, loading, signIn, logout, isAuthenticated: Boolean(user) }),
+    [user, loading, signIn, logout]
+  );
+
+  return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>;
+}
+
+export function useAuth() {
+  const context = useContext(AuthContext);
+  if (!context) {
+    throw new Error('useAuth должен вызываться внутри <AuthProvider>');
+  }
+  return context;
+}
+
+export default AuthContext;
diff --git a/frontend/src/pages/AdminDashboard.jsx b/frontend/src/pages/AdminDashboard.jsx
index 7ffbc50..2b586f4 100644
--- a/frontend/src/pages/AdminDashboard.jsx
+++ b/frontend/src/pages/AdminDashboard.jsx
@@ -1,5 +1,7 @@
 import React, { useEffect, useMemo, useState } from 'react';
 
+import { apiFetch } from '../api/client';
+import { useAuth } from '../context/AuthContext';
 import './AdminDashboard.css';
 
 const PAGE_SIZE = 10;
@@ -28,6 +30,7 @@ function Badge({ children, tone = 'neutral' }) {
 }
 
 function AdminDashboard() {
+  const { user, logout } = useAuth();
   const [cases, setCases] = useState([]);
   const [dashboard, setDashboard] = useState(null);
   const [loading, setLoading] = useState(false);
@@ -69,7 +72,7 @@ function AdminDashboard() {
         if (filters.ageMin !== '') params.set('age_min', filters.ageMin);
         if (filters.ageMax !== '') params.set('age_max', filters.ageMax);
 
-        const response = await fetch(`/api/v1/admin/cases?${params.toString()}`, {
+        const response = await apiFetch(`/api/v1/admin/cases?${params.toString()}`, {
           signal: controller.signal,
         });
         if (!response.ok) {
@@ -106,7 +109,7 @@ function AdminDashboard() {
     async function loadDashboard() {
       setDashboardLoading(true);
       try {
-        const response = await fetch('/api/v1/admin/dashboard', { signal: controller.signal });
+        const response = await apiFetch('/api/v1/admin/dashboard', { signal: controller.signal });
         if (!response.ok) {
           throw new Error(`Не удалось загрузить dashboard (${response.status})`);
         }
@@ -169,7 +172,7 @@ function AdminDashboard() {
       const formData = new FormData();
       formData.append('file', uploadFile);
 
-      const response = await fetch('/api/v1/admin/parse-doc', {
+      const response = await apiFetch('/api/v1/admin/parse-doc', {
         method: 'POST',
         body: formData,
       });
@@ -221,9 +224,8 @@ function AdminDashboard() {
         note: parseCaseFields.notes ?? null,
       };
 
-      const response = await fetch('/api/v1/cases', {
+      const response = await apiFetch('/api/v1/cases', {
         method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify(payload),
       });
 
@@ -286,9 +288,8 @@ function AdminDashboard() {
         note: editForm.notes ?? null,
       };
 
-      const response = await fetch(`/api/v1/admin/cases/${selectedCaseId}`, {
+      const response = await apiFetch(`/api/v1/admin/cases/${selectedCaseId}`, {
         method: 'PATCH',
-        headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify(payload),
       });
 
@@ -303,7 +304,7 @@ function AdminDashboard() {
       setEditForm(updated);
       setDashboardLoading(true);
       try {
-        const dashboardResponse = await fetch('/api/v1/admin/dashboard');
+        const dashboardResponse = await apiFetch('/api/v1/admin/dashboard');
         if (dashboardResponse.ok) {
           setDashboard(await dashboardResponse.json());
         }
@@ -331,6 +332,9 @@ function AdminDashboard() {
           <button type="button" className="admin-secondary-button" onClick={() => setPage(1)}>
             Обновить
           </button>
+          <button type="button" className="admin-secondary-button" onClick={logout}>
+            Выйти{user ? ` · ${user.username}` : ''}
+          </button>
         </div>
       </header>
 
diff --git a/frontend/src/pages/Login.css b/frontend/src/pages/Login.css
new file mode 100644
index 0000000..9a0efdb
--- /dev/null
+++ b/frontend/src/pages/Login.css
@@ -0,0 +1,102 @@
+.login-page {
+  min-height: 100vh;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 24px;
+  background: #0f172a;
+}
+
+.login-loading {
+  min-height: 100vh;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #94a3b8;
+  background: #0f172a;
+  font-size: 15px;
+}
+
+.login-card {
+  width: 100%;
+  max-width: 380px;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  padding: 32px 28px;
+  border-radius: 14px;
+  background: #1e293b;
+  border: 1px solid #334155;
+  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
+}
+
+.login-header h1 {
+  margin: 0 0 6px;
+  font-size: 26px;
+  letter-spacing: 0.14em;
+  color: #f8fafc;
+}
+
+.login-header p {
+  margin: 0;
+  font-size: 13px;
+  line-height: 1.45;
+  color: #94a3b8;
+}
+
+.login-field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.login-field span {
+  font-size: 12px;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: #94a3b8;
+}
+
+.login-field input {
+  padding: 11px 12px;
+  font-size: 15px;
+  color: #f8fafc;
+  background: #0f172a;
+  border: 1px solid #334155;
+  border-radius: 8px;
+}
+
+.login-field input:focus {
+  outline: none;
+  border-color: #38bdf8;
+}
+
+.login-error {
+  padding: 10px 12px;
+  font-size: 13px;
+  color: #fecaca;
+  background: rgba(153, 27, 27, 0.35);
+  border: 1px solid #b91c1c;
+  border-radius: 8px;
+}
+
+.login-button {
+  margin-top: 4px;
+  padding: 12px 16px;
+  font-size: 15px;
+  font-weight: 600;
+  color: #04121f;
+  background: #38bdf8;
+  border: none;
+  border-radius: 8px;
+  cursor: pointer;
+}
+
+.login-button:hover:not(:disabled) {
+  background: #0ea5e9;
+}
+
+.login-button:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
diff --git a/frontend/src/pages/Login.jsx b/frontend/src/pages/Login.jsx
new file mode 100644
index 0000000..53fd08f
--- /dev/null
+++ b/frontend/src/pages/Login.jsx
@@ -0,0 +1,87 @@
+import React, { useState } from 'react';
+import { Navigate, useLocation, useNavigate } from 'react-router-dom';
+
+import { useAuth } from '../context/AuthContext';
+import './Login.css';
+
+function Login() {
+  const { signIn, isAuthenticated, loading } = useAuth();
+  const navigate = useNavigate();
+  const location = useLocation();
+
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+  const [submitting, setSubmitting] = useState(false);
+
+  // Куда вернуться после входа — ProtectedRoute кладёт исходный путь в state.
+  const from = location.state?.from || '/';
+
+  if (loading) {
+    return <div className="login-loading">Проверка сессии…</div>;
+  }
+
+  if (isAuthenticated) {
+    return <Navigate to={from} replace />;
+  }
+
+  async function handleSubmit(event) {
+    event.preventDefault();
+    setSubmitting(true);
+    setError('');
+
+    try {
+      const me = await signIn(username.trim(), password);
+      // Оператор/field работают с карточкой, admin — со сводкой.
+      const target = from !== '/' ? from : me.role === 'admin' ? '/admin' : '/';
+      navigate(target, { replace: true });
+    } catch (err) {
+      setError(err.message || 'Не удалось войти');
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  return (
+    <div className="login-page">
+      <form className="login-card" onSubmit={handleSubmit}>
+        <div className="login-header">
+          <h1>ВЕКТОР</h1>
+          <p>Система определения приоритетных направлений поиска</p>
+        </div>
+
+        <label className="login-field">
+          <span>Логин</span>
+          <input
+            name="username"
+            autoComplete="username"
+            autoFocus
+            value={username}
+            onChange={(event) => setUsername(event.target.value)}
+            required
+          />
+        </label>
+
+        <label className="login-field">
+          <span>Пароль</span>
+          <input
+            name="password"
+            type="password"
+            autoComplete="current-password"
+            value={password}
+            onChange={(event) => setPassword(event.target.value)}
+            required
+          />
+        </label>
+
+        {error ? <div className="login-error">{error}</div> : null}
+
+        <button type="submit" className="login-button" disabled={submitting}>
+          {submitting ? 'Вход…' : 'Войти'}
+        </button>
+      </form>
+    </div>
+  );
+}
+
+export default Login;
diff --git a/frontend/src/pages/analysis/AnalysisResult.jsx b/frontend/src/pages/analysis/AnalysisResult.jsx
index 17ca8e4..e2379c5 100644
--- a/frontend/src/pages/analysis/AnalysisResult.jsx
+++ b/frontend/src/pages/analysis/AnalysisResult.jsx
@@ -1,6 +1,7 @@
 import React, { useState, useEffect } from "react";
 import { useParams } from "react-router-dom";
 import SearchMap from '../../components/SearchMap';
+import { apiFetch } from "../../api/client";
 import "./AnalysisResult.css";
 
 const AnalysisResult = () => {
@@ -16,7 +17,7 @@ const AnalysisResult = () => {
         setLoading(true);
         setError(null);
 
-        const caseResponse = await fetch(`/api/v1/cases/${caseId}`);
+        const caseResponse = await apiFetch(`/api/v1/cases/${caseId}`);
         if (!caseResponse.ok) {
           throw new Error("Не удалось загрузить карточку");
         }