diff --git a/job-tracker-ui/src/i18n/translations.ts b/job-tracker-ui/src/i18n/translations.ts
index 295af21..6268bcf 100644
--- a/job-tracker-ui/src/i18n/translations.ts
+++ b/job-tracker-ui/src/i18n/translations.ts
@@ -768,6 +768,12 @@ export const translations = {
     passwordResetRequestSent: "If that account exists, a reset link has been sent.",
     passwordResetRequestFailed: "Could not send the reset link.",
     loginFailed: "Login failed.",
+    emailRequired: "Enter your email address.",
+    invalidEmail: "Enter a valid email address.",
+    passwordRequired: "Enter your password.",
+    passwordTooShort: "Password must be at least 8 characters, with a number and a lowercase letter.",
+    confirmPassword: "Confirm password",
+    passwordsDoNotMatch: "Passwords do not match.",
     resetPasswordTitle: "Reset password",
     resetPasswordBody: "Set a new password for your account.",
     missingResetLinkInfo: "Missing email/token in link.",
@@ -1816,6 +1822,12 @@ export const translations = {
     passwordResetRequestSent: "Hvis kontoen finnes, er en nullstillingslenke sendt.",
     passwordResetRequestFailed: "Kunne ikke sende nullstillingslenken.",
     loginFailed: "Innlogging mislyktes.",
+    emailRequired: "Skriv inn e-postadressen din.",
+    invalidEmail: "Skriv inn en gyldig e-postadresse.",
+    passwordRequired: "Skriv inn passordet ditt.",
+    passwordTooShort: "Passordet må være minst 8 tegn, med et tall og en liten bokstav.",
+    confirmPassword: "Bekreft passord",
+    passwordsDoNotMatch: "Passordene stemmer ikke overens.",
     resetPasswordTitle: "Tilbakestill passord",
     resetPasswordBody: "Sett et nytt passord for kontoen din.",
     missingResetLinkInfo: "Mangler e-post/token i lenken.",
diff --git a/job-tracker-ui/src/views/ForgotPasswordPage.tsx b/job-tracker-ui/src/views/ForgotPasswordPage.tsx
index 239dfa9..f9a63e9 100644
--- a/job-tracker-ui/src/views/ForgotPasswordPage.tsx
+++ b/job-tracker-ui/src/views/ForgotPasswordPage.tsx
@@ -16,6 +16,8 @@ export default function ForgotPasswordPage() {
   const [email, setEmail] = useState("");
   const [loading, setLoading] = useState(false);
   const [submitted, setSubmitted] = useState(false);
+  const [emailError, setEmailError] = useState<string | undefined>(undefined);
+  const EMAIL_PATTERN = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
 
   useEffect(() => {
     const params = new URLSearchParams(window.location.search);
@@ -46,10 +48,16 @@ export default function ForgotPasswordPage() {
           component="form"
           onSubmit={(e) => {
             e.preventDefault();
-            if (!email.trim()) {
-              toast(t("passwordResetEnterEmail"), "info");
+            const trimmed = email.trim();
+            if (!trimmed) {
+              setEmailError(t("emailRequired"));
               return;
             }
+            if (!EMAIL_PATTERN.test(trimmed)) {
+              setEmailError(t("invalidEmail"));
+              return;
+            }
+            setEmailError(undefined);
             setLoading(true);
             api
               .post("/auth/request-password-reset", { email: email.trim() })
@@ -65,7 +73,17 @@ export default function ForgotPasswordPage() {
           sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}
         >
           {submitted ? <Alert severity="success">{t("passwordResetRequestSent")}</Alert> : null}
-          <TextField label={t("profileEmail")} value={email} onChange={(e) => setEmail(e.target.value)} autoComplete="email" fullWidth />
+          <TextField
+            label={t("profileEmail")}
+            type="email"
+            value={email}
+            onChange={(e) => { setEmail(e.target.value); setEmailError(undefined); }}
+            autoComplete="email"
+            autoFocus
+            error={Boolean(emailError)}
+            helperText={emailError}
+            fullWidth
+          />
 
           <Box sx={{ display: "flex", justifyContent: "flex-end", gap: 1, mt: 1 }}>
             <Button type="button" variant="outlined" onClick={() => navigate("/login")} disabled={loading}>
diff --git a/job-tracker-ui/src/views/LoginPage.tsx b/job-tracker-ui/src/views/LoginPage.tsx
index f5dff1d..fc39a1c 100644
--- a/job-tracker-ui/src/views/LoginPage.tsx
+++ b/job-tracker-ui/src/views/LoginPage.tsx
@@ -32,12 +32,17 @@ export default function LoginPage() {
 
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
+  const [confirmPassword, setConfirmPassword] = useState("");
   const [rememberMe, setRememberMe] = useState(() => getRememberMePref());
   const [loading, setLoading] = useState(false);
   const [pendingToken, setPendingToken] = useState<string | null>(null);
   const [emailNotVerified, setEmailNotVerified] = useState(false);
   const [resendingVerification, setResendingVerification] = useState(false);
   const [verificationResent, setVerificationResent] = useState(false);
+  const [fieldErrors, setFieldErrors] = useState<{ email?: string; password?: string; confirmPassword?: string }>({});
+  const [registerMode, setRegisterMode] = useState(false);
+
+  const EMAIL_PATTERN = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
 
   const nextPath = (location?.state?.from as string | undefined) ?? "/dashboard";
 
@@ -55,7 +60,24 @@ export default function LoginPage() {
     navigate(nextPath, { replace: true });
   }
 
+  function validate(mode: "login" | "register") {
+    const errors: { email?: string; password?: string; confirmPassword?: string } = {};
+    if (!email.trim()) errors.email = t("emailRequired");
+    else if (!EMAIL_PATTERN.test(email.trim())) errors.email = t("invalidEmail");
+
+    if (!password) errors.password = t("passwordRequired");
+    else if (mode === "register" && password.length < 8) errors.password = t("passwordTooShort");
+
+    if (mode === "register" && password && confirmPassword !== password) {
+      errors.confirmPassword = t("passwordsDoNotMatch");
+    }
+
+    setFieldErrors(errors);
+    return Object.keys(errors).length === 0;
+  }
+
   async function submit(mode: "login" | "register") {
+    if (!validate(mode)) return;
     setLoading(true);
     setEmailNotVerified(false);
     setVerificationResent(false);
@@ -131,7 +153,11 @@ export default function LoginPage() {
             </Tabs>
 
             {tab === 0 && (
-              <Box component="form" onSubmit={(e) => { e.preventDefault(); void submit("login"); }} sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}>
+              <Box
+                component="form"
+                onSubmit={(e) => { e.preventDefault(); void submit(registerMode ? "register" : "login"); }}
+                sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}
+              >
                 {cfg?.requireEmailVerification && emailNotVerified && (
                   <Alert
                     severity="warning"
@@ -144,38 +170,81 @@ export default function LoginPage() {
                     {t("emailNotVerified")}
                   </Alert>
                 )}
-                <TextField label={t("profileEmail")} value={email} onChange={(e) => setEmail(e.target.value)} autoComplete="email" fullWidth />
-                <TextField label={t("profileCurrentPassword")} value={password} onChange={(e) => setPassword(e.target.value)} autoComplete={allowReg ? "new-password" : "current-password"} type="password" fullWidth />
-
-                <Box sx={{ display: "flex", alignItems: { xs: "flex-start", sm: "center" }, justifyContent: "space-between", gap: 1, flexWrap: "wrap" }}>
-                  <FormControlLabel
-                    control={<Checkbox disableRipple checked={rememberMe} onChange={(e) => setRememberMe(e.target.checked)} />}
-                    label={t("rememberMe")}
+                <TextField
+                  label={t("profileEmail")}
+                  type="email"
+                  value={email}
+                  onChange={(e) => { setEmail(e.target.value); setFieldErrors((f) => ({ ...f, email: undefined })); }}
+                  autoComplete="email"
+                  autoFocus
+                  error={Boolean(fieldErrors.email)}
+                  helperText={fieldErrors.email}
+                  fullWidth
+                />
+                <TextField
+                  label={t("profileCurrentPassword")}
+                  value={password}
+                  onChange={(e) => { setPassword(e.target.value); setFieldErrors((f) => ({ ...f, password: undefined, confirmPassword: undefined })); }}
+                  autoComplete={registerMode ? "new-password" : "current-password"}
+                  type="password"
+                  error={Boolean(fieldErrors.password)}
+                  helperText={fieldErrors.password || (registerMode ? t("passwordTooShort") : undefined)}
+                  fullWidth
+                />
+                {registerMode && (
+                  <TextField
+                    label={t("confirmPassword")}
+                    value={confirmPassword}
+                    onChange={(e) => { setConfirmPassword(e.target.value); setFieldErrors((f) => ({ ...f, confirmPassword: undefined })); }}
+                    autoComplete="new-password"
+                    type="password"
+                    error={Boolean(fieldErrors.confirmPassword)}
+                    helperText={fieldErrors.confirmPassword}
+                    fullWidth
                   />
-                  <Button
-                    type="button"
-                    variant="text"
-                    size="small"
-                    disableRipple
-                    onClick={() => navigate(`/forgot-password${email.trim() ? `?email=${encodeURIComponent(email.trim())}` : ""}`)}
-                    sx={{ px: 0, minWidth: 0, fontWeight: 700, alignSelf: { xs: "stretch", sm: "auto" } }}
-                  >
-                    {t("forgotPassword")}
-                  </Button>
-                </Box>
+                )}
 
-                <Typography variant="body2" sx={{ color: "text.secondary", mt: -0.5 }}>
-                  {rememberMe ? t("rememberMeHelpPersistent") : t("rememberMeHelpSession")}
-                </Typography>
+                {!registerMode && (
+                  <Box sx={{ display: "flex", alignItems: { xs: "flex-start", sm: "center" }, justifyContent: "space-between", gap: 1, flexWrap: "wrap" }}>
+                    <FormControlLabel
+                      control={<Checkbox disableRipple checked={rememberMe} onChange={(e) => setRememberMe(e.target.checked)} />}
+                      label={t("rememberMe")}
+                    />
+                    <Button
+                      type="button"
+                      variant="text"
+                      size="small"
+                      disableRipple
+                      onClick={() => navigate(`/forgot-password${email.trim() ? `?email=${encodeURIComponent(email.trim())}` : ""}`)}
+                      sx={{ px: 0, minWidth: 0, fontWeight: 700, alignSelf: { xs: "stretch", sm: "auto" } }}
+                    >
+                      {t("forgotPassword")}
+                    </Button>
+                  </Box>
+                )}
 
-                <Box sx={{ display: "flex", gap: 1, justifyContent: "flex-end", mt: 1 }}>
+                {!registerMode && (
+                  <Typography variant="body2" sx={{ color: "text.secondary", mt: -0.5 }}>
+                    {rememberMe ? t("rememberMeHelpPersistent") : t("rememberMeHelpSession")}
+                  </Typography>
+                )}
+
+                <Box sx={{ display: "flex", alignItems: "center", justifyContent: "space-between", gap: 1, mt: 1, flexWrap: "wrap" }}>
                   {allowReg && (
-                    <Button type="button" variant="outlined" disableRipple disabled={loading} onClick={() => void submit("register")}>
-                      {t("createAccount")}
+                    <Button
+                      type="button"
+                      variant="text"
+                      size="small"
+                      disableRipple
+                      disabled={loading}
+                      onClick={() => { setRegisterMode((v) => !v); setFieldErrors({}); }}
+                      sx={{ px: 0, minWidth: 0, fontWeight: 700 }}
+                    >
+                      {registerMode ? t("backToLogin") : t("createAccount")}
                     </Button>
                   )}
-                  <Button type="submit" variant="contained" disableRipple disabled={loading}>
-                    {t("signInTitle")}
+                  <Button type="submit" variant="contained" disableRipple disabled={loading} sx={{ ml: "auto" }}>
+                    {registerMode ? t("createAccount") : t("signInTitle")}
                   </Button>
                 </Box>
               </Box>
diff --git a/job-tracker-ui/src/views/ResetPasswordPage.tsx b/job-tracker-ui/src/views/ResetPasswordPage.tsx
index 5526a5e..53be715 100644
--- a/job-tracker-ui/src/views/ResetPasswordPage.tsx
+++ b/job-tracker-ui/src/views/ResetPasswordPage.tsx
@@ -4,7 +4,7 @@ import { Alert, Box, Button, Paper, TextField, Typography } from "@mui/material"
 
 import { useNavigate } from "react-router-dom";
 
-import { api } from "../api";
+import { api, getApiErrorMessage } from "../api";
 import { useToast } from "../toast";
 import { useI18n } from "../i18n/I18nProvider";
 
@@ -16,7 +16,9 @@ export default function ResetPasswordPage() {
   const [email, setEmail] = useState("");
   const [token, setToken] = useState("");
   const [newPassword, setNewPassword] = useState("");
+  const [confirmPassword, setConfirmPassword] = useState("");
   const [loading, setLoading] = useState(false);
+  const [fieldErrors, setFieldErrors] = useState<{ newPassword?: string; confirmPassword?: string }>({});
 
   useEffect(() => {
     const params = new URLSearchParams(window.location.search);
@@ -54,6 +56,12 @@ export default function ResetPasswordPage() {
               toast(t("missingResetLinkInfo"), "error");
               return;
             }
+            const errors: { newPassword?: string; confirmPassword?: string } = {};
+            if (!newPassword || newPassword.length < 8) errors.newPassword = t("passwordTooShort");
+            if (confirmPassword !== newPassword) errors.confirmPassword = t("passwordsDoNotMatch");
+            setFieldErrors(errors);
+            if (Object.keys(errors).length > 0) return;
+
             setLoading(true);
             api
               .post("/auth/reset-password", { email, token, newPassword })
@@ -62,16 +70,34 @@ export default function ResetPasswordPage() {
                 navigate("/login", { replace: true });
               })
               .catch((e2: any) => {
-                const msg = e2?.response?.data || e2?.message || t("resetFailed");
-                toast(String(msg), "error");
+                toast(getApiErrorMessage(e2, t("resetFailed")), "error");
               })
               .finally(() => setLoading(false));
           }}
           sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}
         >
           {missingResetInfo ? <Alert severity="warning">{t("missingResetLinkInfo")}</Alert> : null}
-          <TextField label={t("profileEmail")} value={email} onChange={(e) => setEmail(e.target.value)} disabled={!missingResetInfo} fullWidth />
-          <TextField label={t("profileNewPassword")} type="password" value={newPassword} onChange={(e) => setNewPassword(e.target.value)} fullWidth />
+          <TextField label={t("profileEmail")} type="email" value={email} onChange={(e) => setEmail(e.target.value)} disabled={!missingResetInfo} fullWidth />
+          <TextField
+            label={t("profileNewPassword")}
+            type="password"
+            value={newPassword}
+            onChange={(e) => { setNewPassword(e.target.value); setFieldErrors((f) => ({ ...f, newPassword: undefined, confirmPassword: undefined })); }}
+            autoComplete="new-password"
+            error={Boolean(fieldErrors.newPassword)}
+            helperText={fieldErrors.newPassword || t("passwordTooShort")}
+            fullWidth
+          />
+          <TextField
+            label={t("confirmPassword")}
+            type="password"
+            value={confirmPassword}
+            onChange={(e) => { setConfirmPassword(e.target.value); setFieldErrors((f) => ({ ...f, confirmPassword: undefined })); }}
+            autoComplete="new-password"
+            error={Boolean(fieldErrors.confirmPassword)}
+            helperText={fieldErrors.confirmPassword}
+            fullWidth
+          />
 
           <Box sx={{ display: "flex", justifyContent: "flex-end", gap: 1, mt: 1 }}>
             <Button type="button" variant="outlined" onClick={() => navigate("/login")} disabled={loading}>