diff --git a/src/page/auth/components.tsx b/src/page/auth/components.tsx
index ea2caf4..29a11b5 100644
--- a/src/page/auth/components.tsx
+++ b/src/page/auth/components.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState, type ReactNode } from "react";
+import { useCallback, useEffect, useState, type ReactNode } from "react";
 import { Apple, Eye, EyeOff, Globe, RotateCw, Send } from "lucide-react";
 
 import { client, type CaptchaResponse } from "@/client";
@@ -8,10 +8,10 @@ import { Label } from "@/components/ui/label";
 
 export function Divider() {
   return (
-    <div className="my-5 flex items-center gap-4 text-xs font-medium uppercase text-zinc-400">
-      <div className="h-px flex-1 bg-zinc-200" />
+    <div className="my-5 flex items-center gap-4 text-xs font-medium uppercase text-muted-foreground/60">
+      <div className="h-px flex-1 bg-border" />
       <span>or</span>
-      <div className="h-px flex-1 bg-zinc-200" />
+      <div className="h-px flex-1 bg-border" />
     </div>
   );
 }
@@ -19,15 +19,15 @@ export function Divider() {
 export function SocialButtons() {
   return (
     <div className="mt-6 grid grid-cols-3 gap-3">
-      <Button className="h-11 rounded-lg border-zinc-200 bg-white text-zinc-950 hover:bg-zinc-50" type="button" variant="outline">
+      <Button className="h-11 rounded-xl border-border bg-background text-foreground hover:bg-muted" type="button" variant="outline">
         <Apple className="size-5 fill-current" aria-hidden="true" />
         <span className="sr-only">Continue with Apple</span>
       </Button>
-      <Button className="h-11 rounded-lg border-zinc-200 bg-white text-zinc-950 hover:bg-zinc-50" type="button" variant="outline">
-        <Globe className="size-5 text-red-500" aria-hidden="true" />
+      <Button className="h-11 rounded-xl border-border bg-background text-foreground hover:bg-muted" type="button" variant="outline">
+        <Globe className="size-5 text-destructive" aria-hidden="true" />
         <span className="sr-only">Continue with Google</span>
       </Button>
-      <Button className="h-11 rounded-lg border-zinc-200 bg-white text-sky-500 hover:bg-zinc-50" type="button" variant="outline">
+      <Button className="h-11 rounded-xl border-border bg-background text-primary hover:bg-muted" type="button" variant="outline">
         <Send className="size-5 fill-current" aria-hidden="true" />
         <span className="sr-only">Continue with Twitter</span>
       </Button>
@@ -39,17 +39,20 @@ export function PasswordInput({
   id,
   name,
   placeholder,
+  autoComplete = "current-password",
 }: {
   id: string;
   name: string;
   placeholder: string;
+  autoComplete?: string;
 }) {
   const [visible, setVisible] = useState(false);
 
   return (
     <div className="relative">
       <Input
-        className="h-11 rounded-lg border-zinc-200 pr-11 text-sm placeholder:text-zinc-400 focus-visible:ring-zinc-200"
+        className="h-11 rounded-xl border-input bg-background pr-11 text-sm placeholder:text-muted-foreground/50 focus-visible:ring-ring/20"
+        autoComplete={autoComplete}
         id={id}
         name={name}
         placeholder={placeholder}
@@ -58,7 +61,7 @@ export function PasswordInput({
       />
       <Button
         aria-label={visible ? "Hide password" : "Show password"}
-        className="absolute right-1.5 top-1/2 size-9 -translate-y-1/2 text-zinc-500 hover:bg-transparent"
+        className="absolute right-1.5 top-1/2 size-9 -translate-y-1/2 text-muted-foreground hover:bg-transparent"
         onClick={() => setVisible((current) => !current)}
         type="button"
         variant="ghost"
@@ -77,7 +80,7 @@ export function CaptchaField({
   const [captcha, setCaptcha] = useState<CaptchaResponse | null>(null);
   const [loading, setLoading] = useState(false);
 
-  const loadCaptcha = async () => {
+  const loadCaptcha = useCallback(async () => {
     setLoading(true);
     try {
       const response = await client.authCaptcha({
@@ -93,11 +96,12 @@ export function CaptchaField({
     } finally {
       setLoading(false);
     }
-  };
+  }, [onPublicKey]);
 
   useEffect(() => {
-    void loadCaptcha();
-  }, []);
+    const timer = window.setTimeout(() => void loadCaptcha(), 0);
+    return () => window.clearTimeout(timer);
+  }, [loadCaptcha]);
 
   const src = captcha?.base64?.startsWith("data:")
     ? captcha.base64
@@ -105,26 +109,28 @@ export function CaptchaField({
 
   return (
     <div className="space-y-2">
-      <Label className="text-sm font-semibold text-zinc-950" htmlFor="captcha">
+      <Label className="text-sm font-semibold text-foreground" htmlFor="captcha">
         Captcha
       </Label>
       <div className="flex gap-3">
         <Input
-          className="h-11 rounded-lg border-zinc-200 text-sm placeholder:text-zinc-400 focus-visible:ring-zinc-200"
+          autoComplete="off"
+          className="h-11 rounded-xl border-input bg-background text-sm placeholder:text-muted-foreground/50 focus-visible:ring-ring/20"
           id="captcha"
+          inputMode="text"
           name="captcha"
-          placeholder="Enter captcha..."
+          placeholder="Enter captcha…"
           required
         />
         <button
           aria-label="Refresh captcha"
-          className="grid h-11 w-30 shrink-0 place-items-center rounded-lg border border-zinc-200 bg-zinc-50 text-zinc-500"
+          className="grid h-11 w-30 shrink-0 place-items-center rounded-xl border border-border bg-muted/40 text-muted-foreground"
           disabled={loading}
           onClick={() => void loadCaptcha()}
           type="button"
         >
           {captcha ? (
-            <img alt="Captcha" className="h-9 max-w-28 object-contain" src={src} />
+            <img alt="Captcha" className="h-9 max-w-28 object-contain" height={36} src={src} width={112} />
           ) : (
             <RotateCw className="size-4" />
           )}
@@ -149,15 +155,17 @@ export function TextField({
 }) {
   return (
     <div className="space-y-2">
-      <Label className="text-sm font-semibold text-zinc-950" htmlFor={id}>
+      <Label className="text-sm font-semibold text-foreground" htmlFor={id}>
         {label}
       </Label>
       <Input
-        className="h-11 rounded-lg border-zinc-200 text-sm placeholder:text-zinc-400 focus-visible:ring-zinc-200"
+        autoComplete={type === "email" ? "email" : name === "username" ? "username" : "off"}
+        className="h-11 rounded-xl border-input bg-background text-sm placeholder:text-muted-foreground/50 focus-visible:ring-ring/20"
         id={id}
         name={name}
         placeholder={placeholder}
         required
+        spellCheck={type === "email" || name === "username" ? false : undefined}
         type={type}
       />
     </div>
@@ -167,10 +175,11 @@ export function TextField({
 export function FormMessage({ children, tone }: { children: ReactNode; tone: "error" | "success" }) {
   return (
     <p
+      aria-live="polite"
       className={
         tone === "error"
-          ? "rounded-lg bg-red-50 px-3 py-2 text-sm text-red-600"
-          : "rounded-lg bg-emerald-50 px-3 py-2 text-sm text-emerald-700"
+          ? "rounded-xl bg-destructive/10 px-3 py-2 text-sm text-destructive"
+          : "rounded-xl bg-primary/10 px-3 py-2 text-sm text-primary"
       }
     >
       {children}
diff --git a/src/page/auth/forgot-password.tsx b/src/page/auth/forgot-password.tsx
index 47c478e..3694a4b 100644
--- a/src/page/auth/forgot-password.tsx
+++ b/src/page/auth/forgot-password.tsx
@@ -41,7 +41,7 @@ export default function ForgotPasswordPage() {
           id="email"
           label="E-Mail Address"
           name="email"
-          placeholder="Enter your email..."
+          placeholder="Enter your email…"
           type="email"
         />
 
@@ -49,16 +49,16 @@ export default function ForgotPasswordPage() {
         {success && <FormMessage tone="success">{success}</FormMessage>}
 
         <Button
-          className="h-11 w-full rounded-lg bg-zinc-950 text-base text-white shadow-inner shadow-white/10 hover:bg-zinc-800"
+          className="h-11 w-full rounded-xl text-base shadow-inner shadow-primary-foreground/10"
           disabled={submitting}
           type="submit"
         >
-          {submitting ? "Please wait..." : "Send reset link"}
+          {submitting ? "Please wait…" : "Send reset link"}
         </Button>
       </form>
 
-      <footer className="mt-6 text-center text-base text-zinc-500">
-        <Link className="font-semibold text-zinc-950" to="/auth/login">
+      <footer className="mt-6 text-center text-base text-muted-foreground">
+        <Link className="font-semibold text-foreground transition-colors hover:text-primary" to="/auth/login">
           Back to sign in
         </Link>
       </footer>
diff --git a/src/page/auth/layout.tsx b/src/page/auth/layout.tsx
index 876d2dc..2a58b61 100644
--- a/src/page/auth/layout.tsx
+++ b/src/page/auth/layout.tsx
@@ -5,8 +5,8 @@ import { useAuth } from "@/context/auth-context";
 
 function AuthLogo() {
   return (
-    <div className="mx-auto grid size-12 place-items-center rounded-lg bg-gradient-to-b from-[oklch(0.45_0.24_290)] to-[oklch(0.55_0.24_290)] shadow-[0_14px_30px_rgba(134,59,255,0.24)]">
-      <div className="relative size-8 overflow-hidden rounded-sm bg-white/20">
+    <div className="mx-auto grid size-12 place-items-center rounded-2xl bg-primary text-primary-foreground shadow-lg shadow-primary/20">
+      <div className="relative size-8 overflow-hidden rounded-lg bg-primary-foreground/20">
         <span className="absolute left-1.5 top-2 h-1 w-6 rounded-full bg-white" />
         <span className="absolute left-1 top-3.5 h-1 w-7 rounded-full bg-white/90" />
         <span className="absolute left-2 top-5 h-1 w-6 rounded-full bg-white/80" />
@@ -17,10 +17,10 @@ function AuthLogo() {
 
 export function AuthPanel({ children }: { children: ReactNode }) {
   return (
-    <section className="relative z-10 w-full max-w-[460px] rounded-lg bg-card px-6 py-8 shadow-[0_24px_64px_rgba(134,59,255,0.08)] sm:px-9">
-      <div className="pointer-events-none absolute inset-x-0 top-0 h-32 overflow-hidden rounded-t-lg">
-        <div className="absolute inset-0 bg-[linear-gradient(rgba(134,59,255,0.10)_1px,transparent_1px),linear-gradient(90deg,rgba(134,59,255,0.10)_1px,transparent_1px)] bg-[size:38px_38px] [mask-image:linear-gradient(to_bottom,black,transparent)]" />
-        <div className="absolute inset-x-10 top-0 h-24 bg-gradient-to-b from-[oklch(0.40_0.12_290)/0.15] to-transparent blur-2xl" />
+    <section className="relative z-10 w-full max-w-[460px] rounded-2xl border border-border/50 bg-card px-6 py-8 shadow-xl shadow-primary/[0.04] sm:px-9">
+      <div className="pointer-events-none absolute inset-x-0 top-0 h-32 overflow-hidden rounded-t-2xl">
+        <div className="absolute inset-0 bg-[linear-gradient(var(--border)_1px,transparent_1px),linear-gradient(90deg,var(--border)_1px,transparent_1px)] bg-[size:38px_38px] opacity-40 [mask-image:linear-gradient(to_bottom,black,transparent)]" />
+        <div className="absolute inset-x-10 top-0 h-24 bg-primary/10 blur-2xl" />
       </div>
       {children}
     </section>
@@ -55,11 +55,11 @@ export default function AuthLayout() {
   return (
     <main className="min-h-svh bg-background px-4 py-6 text-foreground">
       <div className="relative mx-auto grid min-h-[calc(100svh-3rem)] w-full max-w-5xl place-items-center overflow-hidden">
-        <div className="pointer-events-none absolute inset-0 bg-[linear-gradient(rgba(134,59,255,0.05)_1px,transparent_1px),linear-gradient(90deg,rgba(134,59,255,0.05)_1px,transparent_1px)] bg-[size:72px_72px] [mask-image:radial-gradient(circle_at_center,black,transparent_70%)]" />
-        <div className="pointer-events-none absolute inset-0 bg-[radial-gradient(circle_at_center,rgba(134,59,255,0.15),transparent_50%)]" />
+        <div className="pointer-events-none absolute inset-0 bg-[linear-gradient(var(--border)_1px,transparent_1px),linear-gradient(90deg,var(--border)_1px,transparent_1px)] bg-[size:72px_72px] opacity-35 [mask-image:radial-gradient(circle_at_center,black,transparent_70%)]" />
+        <div className="pointer-events-none absolute inset-0 bg-[radial-gradient(circle_at_center,var(--primary),transparent_55%)] opacity-10" />
         {isLoading ? (
           <div className="relative z-10 text-sm font-mono font-medium text-muted-foreground">
-            Loading...
+            Loading…
           </div>
         ) : (
           <Outlet />
diff --git a/src/page/auth/login.tsx b/src/page/auth/login.tsx
index 4e982ef..049c29d 100644
--- a/src/page/auth/login.tsx
+++ b/src/page/auth/login.tsx
@@ -124,24 +124,24 @@ export default function LoginPage() {
           id="username"
           label="Username or E-Mail Address"
           name="username"
-          placeholder="Enter your username or email..."
+          placeholder="Enter your username or email…"
         />
 
         <div className="space-y-2">
-          <Label className="text-sm font-semibold text-zinc-950" htmlFor="password">
+          <Label className="text-sm font-semibold text-foreground" htmlFor="password">
             Password
           </Label>
-          <PasswordInput id="password" name="password" placeholder="Enter your password..." />
+          <PasswordInput id="password" name="password" placeholder="Enter your password…" />
         </div>
 
         <CaptchaField onPublicKey={setPublicKey} />
 
         <div className="flex items-center justify-between gap-4 text-sm">
-          <label className="flex items-center gap-3 font-medium text-zinc-950">
-            <Checkbox className="size-4 rounded-[5px] border-zinc-200" name="remember" />
+          <label className="flex items-center gap-3 font-medium text-foreground">
+            <Checkbox className="size-4 rounded-md border-border" name="remember" />
             Remember me
           </label>
-          <Link className="font-medium text-zinc-600 underline underline-offset-4" to="/auth/forgot-password">
+          <Link className="font-medium text-muted-foreground underline underline-offset-4 transition-colors hover:text-foreground" to="/auth/forgot-password">
             Forgot password?
           </Link>
         </div>
@@ -149,17 +149,17 @@ export default function LoginPage() {
         {error && <FormMessage tone="error">{error}</FormMessage>}
 
         <Button
-          className="h-11 w-full rounded-lg bg-zinc-950 text-base text-white shadow-inner shadow-white/10 hover:bg-zinc-800"
+          className="h-11 w-full rounded-xl text-base shadow-inner shadow-primary-foreground/10"
           disabled={submitting}
           type="submit"
         >
-          {submitting ? "Please wait..." : "Sign in"}
+          {submitting ? "Please wait…" : "Sign in"}
         </Button>
       </form>
 
-      <footer className="mt-6 text-center text-base text-zinc-500">
+      <footer className="mt-6 text-center text-base text-muted-foreground">
         Don&apos;t have an account yet?{" "}
-        <Link className="font-semibold text-zinc-950" to="/auth/register">
+        <Link className="font-semibold text-foreground transition-colors hover:text-primary" to="/auth/register">
           Sign Up
         </Link>
       </footer>
@@ -196,11 +196,11 @@ export default function LoginPage() {
 
             <DialogFooter className="-mx-4 -mb-4">
               <Button
-                className="h-10 bg-zinc-950 text-white hover:bg-zinc-800"
+                className="h-10"
                 disabled={twoFactorSubmitting}
                 type="submit"
               >
-                {twoFactorSubmitting ? "Verifying..." : "Verify"}
+                {twoFactorSubmitting ? "Verifying…" : "Verify"}
               </Button>
             </DialogFooter>
           </form>
diff --git a/src/page/auth/register.tsx b/src/page/auth/register.tsx
index 8ea532d..bb74471 100644
--- a/src/page/auth/register.tsx
+++ b/src/page/auth/register.tsx
@@ -58,26 +58,26 @@ export default function RegisterPage() {
       <AuthHeader description="Please enter your details to sign up." title="Create account" />
 
       <form className="relative space-y-4 mt-10" onSubmit={(event) => void handleSubmit(event)}>
-        <TextField id="username" label="Username" name="username" placeholder="Enter your username..." />
+        <TextField id="username" label="Username" name="username" placeholder="Enter your username…" />
         <TextField
           id="email"
           label="E-Mail Address"
           name="email"
-          placeholder="Enter your email..."
+          placeholder="Enter your email…"
           type="email"
         />
 
         <div className="space-y-2">
-          <Label className="text-sm font-semibold text-zinc-950" htmlFor="password">
+          <Label className="text-sm font-semibold text-foreground" htmlFor="password">
             Password
           </Label>
-          <PasswordInput id="password" name="password" placeholder="Enter your password..." />
+          <PasswordInput autoComplete="new-password" id="password" name="password" placeholder="Enter your password…" />
         </div>
         <div className="space-y-2">
-          <Label className="text-sm font-semibold text-zinc-950" htmlFor="confirmPassword">
+          <Label className="text-sm font-semibold text-foreground" htmlFor="confirmPassword">
             Confirm Password
           </Label>
-          <PasswordInput id="confirmPassword" name="confirmPassword" placeholder="Enter your password again..." />
+          <PasswordInput autoComplete="new-password" id="confirmPassword" name="confirmPassword" placeholder="Enter your password again…" />
         </div>
 
         <CaptchaField onPublicKey={setPublicKey} />
@@ -85,17 +85,17 @@ export default function RegisterPage() {
         {error && <FormMessage tone="error">{error}</FormMessage>}
 
         <Button
-          className="h-11 w-full rounded-lg bg-zinc-950 text-base text-white shadow-inner shadow-white/10 hover:bg-zinc-800"
+          className="h-11 w-full rounded-xl text-base shadow-inner shadow-primary-foreground/10"
           disabled={submitting}
           type="submit"
         >
-          {submitting ? "Please wait..." : "Sign up"}
+          {submitting ? "Please wait…" : "Sign up"}
         </Button>
       </form>
 
-      <footer className="mt-6 text-center text-base text-zinc-500">
+      <footer className="mt-6 text-center text-base text-muted-foreground">
         Already have an account?{" "}
-        <Link className="font-semibold text-zinc-950" to="/auth/login">
+        <Link className="font-semibold text-foreground transition-colors hover:text-primary" to="/auth/login">
           Sign In
         </Link>
       </footer>
diff --git a/src/page/auth/reset-password.tsx b/src/page/auth/reset-password.tsx
index b6b3294..8ed9f0e 100644
--- a/src/page/auth/reset-password.tsx
+++ b/src/page/auth/reset-password.tsx
@@ -40,29 +40,29 @@ export default function ResetPasswordPage() {
 
       <form className="relative mt-6 space-y-4" onSubmit={(event) => void handleSubmit(event)}>
         {!searchParams.get("token") && (
-          <TextField id="token" label="Reset Token" name="token" placeholder="Enter your reset token..." />
+          <TextField id="token" label="Reset Token" name="token" placeholder="Enter your reset token…" />
         )}
 
         <div className="space-y-2">
-          <Label className="text-sm font-semibold text-zinc-950" htmlFor="password">
+          <Label className="text-sm font-semibold text-foreground" htmlFor="password">
             Password
           </Label>
-          <PasswordInput id="password" name="password" placeholder="Enter your password..." />
+          <PasswordInput autoComplete="new-password" id="password" name="password" placeholder="Enter your password…" />
         </div>
 
         {error && <FormMessage tone="error">{error}</FormMessage>}
 
         <Button
-          className="h-11 w-full rounded-lg bg-zinc-950 text-base text-white shadow-inner shadow-white/10 hover:bg-zinc-800"
+          className="h-11 w-full rounded-xl text-base shadow-inner shadow-primary-foreground/10"
           disabled={submitting}
           type="submit"
         >
-          {submitting ? "Please wait..." : "Reset password"}
+          {submitting ? "Please wait…" : "Reset password"}
         </Button>
       </form>
 
-      <footer className="mt-6 text-center text-base text-zinc-500">
-        <Link className="font-semibold text-zinc-950" to="/auth/login">
+      <footer className="mt-6 text-center text-base text-muted-foreground">
+        <Link className="font-semibold text-foreground transition-colors hover:text-primary" to="/auth/login">
           Back to sign in
         </Link>
       </footer>