feat(auth): 优化登录注册页面与人机验证展示

- 调整登录、注册页布局为更一致的卡片式结构，提升表单可读性与视觉层级。
- 为登录/注册按钮与状态区补充图标和文案，优化交互反馈。
- 让 Turnstile 验证组件支持自适应宽度并使用更合适的展示尺寸。

apps/web/src/components/turnstile-box.tsx

@@ -3,7 +3,7 @@ import * as React from "react"
 declare global {
   interface Window {
     turnstile?: {
-      render: (container: HTMLElement, options: { sitekey: string; callback: (token: string) => void; "expired-callback": () => void; "error-callback": () => void }) => string
+      render: (container: HTMLElement, options: { sitekey: string; size?: "normal" | "compact" | "flexible"; callback: (token: string) => void; "expired-callback": () => void; "error-callback": () => void }) => string
       remove: (widgetId: string) => void
     }
   }
@@ -20,6 +20,7 @@ export function TurnstileBox({ siteKey, onToken }: { siteKey: string; onToken: (
       ref.current.innerHTML = ""
       widgetId = window.turnstile.render(ref.current, {
         sitekey: siteKey,
+        size: "flexible",
         callback: onToken,
         "expired-callback": () => onToken(""),
         "error-callback": () => onToken(""),
@@ -46,5 +47,5 @@ export function TurnstileBox({ siteKey, onToken }: { siteKey: string; onToken: (
       if (widgetId && window.turnstile) window.turnstile.remove(widgetId)
     }
   }, [siteKey, onToken])
-  return <div className="flex justify-center"><div ref={ref} /></div>
+  return <div className="w-full"><div ref={ref} className="w-full" /></div>
 }

apps/web/src/pages/login.tsx

@@ -1,6 +1,7 @@
 import * as React from "react"
 import { Link, Navigate } from "react-router-dom"
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
+import { ArrowRight, KeyRound, LockKeyhole } from "lucide-react"
 import { api } from "@/lib/api"
 import { useMe } from "@/hooks/use-me"
 import { TurnstileBox } from "@/components/turnstile-box"
@@ -34,27 +35,32 @@ export function LoginPage() {
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
   if (me.data?.user) return <Navigate to="/" replace />
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
-      <div className="w-full max-w-[360px]">
-        <div className="mb-10 text-center">
-          <h1 className="text-3xl font-bold tracking-tight">LanQin Email</h1>
+    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+      <div className="w-full max-w-[420px]">
+        <div className="mb-7 text-center">
+          <h1 className="text-3xl font-semibold tracking-tight">LanQin Email</h1>
+        </div>
+        <div className="rounded-lg border bg-background p-6 shadow-sm sm:p-7">
+          <div className="mb-6 flex items-center gap-2 text-sm font-medium text-muted-foreground">
+            {challengeToken ? <KeyRound className="h-4 w-4" /> : <LockKeyhole className="h-4 w-4" />}
+            {challengeToken ? "双因素验证" : "账号登录"}
           </div>
           <form className="space-y-5" onSubmit={(e) => { e.preventDefault(); if (!challengeToken && turnstileRequired && !turnstileToken) { toast({ title: "请先完成人机验证" }); return }; login.mutate(new FormData(e.currentTarget)) }}>
             {!challengeToken ? (
               <>
                 <div className="space-y-2">
-                <Label htmlFor="email">邮箱</Label>
+                  <Label htmlFor="email" className="text-sm font-medium">邮箱</Label>
                   <Input id="email" name="email" type="email" autoComplete="username" required className="h-11 text-base" />
                 </div>
                 <div className="space-y-2">
-                <Label htmlFor="password">密码</Label>
+                  <Label htmlFor="password" className="text-sm font-medium">密码</Label>
                   <PasswordInput id="password" name="password" autoComplete="current-password" required className="h-11 text-base" />
                 </div>
               </>
             ) : (
               <div className="space-y-2">
-              <Label htmlFor="twoFactorCode">双因素验证码</Label>
-              <Input id="twoFactorCode" name="twoFactorCode" inputMode="numeric" autoComplete="one-time-code" minLength={6} maxLength={6} required className="h-11 text-base" />
+                <Label htmlFor="twoFactorCode" className="text-sm font-medium">双因素验证码</Label>
+                <Input id="twoFactorCode" name="twoFactorCode" inputMode="numeric" autoComplete="one-time-code" minLength={6} maxLength={6} required className="h-11 text-center text-lg tracking-[0.35em]" />
               </div>
             )}
             {!challengeToken && turnstileRequired && (
@@ -62,14 +68,19 @@ export function LoginPage() {
             )}
             <Button className="h-11 w-full text-base" disabled={login.isPending}>
               {login.isPending ? "登录中..." : challengeToken ? "验证登录" : "登录"}
+              {!login.isPending && <ArrowRight className="h-4 w-4" />}
             </Button>
             {challengeToken && <Button type="button" variant="ghost" className="w-full" onClick={() => setChallengeToken("")}>返回登录</Button>}
+          </form>
+        </div>
         {!challengeToken && (
-            <Button type="button" variant="ghost" className="w-full" asChild>
+          <div className="mt-5 flex items-center justify-center gap-2 text-sm text-muted-foreground">
+            <span>没有账号？</span>
+            <Button type="button" variant="link" className="h-auto px-0 text-sm" asChild>
               <Link to="/register">注册账号</Link>
             </Button>
+          </div>
         )}
-        </form>
       </div>
     </div>
   )

apps/web/src/pages/register.tsx

@@ -1,6 +1,7 @@
 import * as React from "react"
 import { Link, Navigate, useNavigate } from "react-router-dom"
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
+import { ArrowLeft, ArrowRight, UserPlus } from "lucide-react"
 import { api } from "@/lib/api"
 import type { PublicDomain } from "@/lib/api"
 import { useMe } from "@/hooks/use-me"
@@ -61,28 +62,35 @@ export function RegisterPage() {
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
   if (me.data?.user) return <Navigate to="/" replace />
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
-      <div className="w-full max-w-[360px]">
-        <div className="mb-10 text-center">
-          <h1 className="text-3xl font-bold tracking-tight">注册账号</h1>
+    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+      <div className="w-full max-w-[420px]">
+        <div className="mb-7 text-center">
+          <h1 className="text-3xl font-semibold tracking-tight">LanQin Email</h1>
+        </div>
+        <div className="rounded-lg border bg-background p-6 shadow-sm sm:p-7">
+          <div className="mb-6 flex items-center gap-2 text-sm font-medium text-muted-foreground">
+            <UserPlus className="h-4 w-4" />
+            注册账号
           </div>
           {publicSettings.isSuccess && !publicSettings.data.openRegistration ? (
-          <div className="space-y-4">
-            <div className="rounded-md border p-4 text-center text-sm text-muted-foreground">当前未开放注册</div>
-            <Button type="button" variant="outline" className="w-full" asChild>
-              <Link to="/login">返回登录</Link>
+            <div className="space-y-5">
+              <div className="rounded-md bg-muted/40 px-4 py-3 text-center text-sm text-muted-foreground">当前未开放注册</div>
+              <Button type="button" variant="outline" className="h-11 w-full text-base" asChild>
+                <Link to="/login">
+                  <ArrowLeft className="h-4 w-4" />
+                  返回登录
+                </Link>
               </Button>
             </div>
           ) : (
             <form className="space-y-5" onSubmit={(e) => { e.preventDefault(); if (turnstileRequired && !turnstileToken) { toast({ title: "请先完成人机验证" }); return }; register.mutate(new FormData(e.currentTarget)) }}>
               {domains.length > 0 ? (
                 <div className="space-y-2">
-                <Label htmlFor="localPart">邮箱地址</Label>
-                <div className="flex items-center gap-2">
-                  <Input id="localPart" name="localPart" className="h-11 flex-1 text-base" placeholder="your-name" required />
-                  <span className="text-sm text-muted-foreground">@</span>
+                  <Label htmlFor="localPart" className="text-sm font-medium">邮箱地址</Label>
+                  <div className="grid grid-cols-1 gap-2 sm:grid-cols-[minmax(0,1fr)_150px]">
+                    <Input id="localPart" name="localPart" className="h-11 text-base" placeholder="邮箱前缀" required />
                     <Select value={domainId} onValueChange={setDomainId} required>
-                    <SelectTrigger className="h-11 w-[140px]">
+                      <SelectTrigger className="h-11">
                         <SelectValue placeholder="选择域名" />
                       </SelectTrigger>
                       <SelectContent>
@@ -95,32 +103,39 @@ export function RegisterPage() {
                 </div>
               ) : (
                 <div className="space-y-2">
-                <Label htmlFor="email">邮箱</Label>
+                  <Label htmlFor="email" className="text-sm font-medium">邮箱</Label>
                   <Input id="email" name="email" type="email" autoComplete="username" required className="h-11 text-base" />
                 </div>
               )}
               <div className="space-y-2">
-              <Label htmlFor="displayName">显示名称</Label>
+                <Label htmlFor="displayName" className="text-sm font-medium">显示名称</Label>
                 <Input id="displayName" name="displayName" autoComplete="name" className="h-11 text-base" />
               </div>
               <div className="space-y-2">
-              <Label htmlFor="password">密码</Label>
+                <Label htmlFor="password" className="text-sm font-medium">密码</Label>
                 <PasswordInput id="password" name="password" autoComplete="new-password" minLength={8} required className="h-11 text-base" />
               </div>
               <div className="space-y-2">
-              <Label htmlFor="confirmPassword">确认密码</Label>
+                <Label htmlFor="confirmPassword" className="text-sm font-medium">确认密码</Label>
                 <PasswordInput id="confirmPassword" name="confirmPassword" autoComplete="new-password" minLength={8} required className="h-11 text-base" />
               </div>
               {turnstileRequired && <TurnstileBox siteKey={publicSettings.data?.turnstileSiteKey || ""} onToken={setTurnstileToken} />}
               <Button className="h-11 w-full text-base" disabled={register.isPending || publicSettings.isLoading}>
                 {register.isPending ? "注册中..." : "注册"}
-            </Button>
-            <Button type="button" variant="ghost" className="w-full" asChild>
-              <Link to="/login">返回登录</Link>
+                {!register.isPending && <ArrowRight className="h-4 w-4" />}
               </Button>
             </form>
           )}
         </div>
+        {!(publicSettings.isSuccess && !publicSettings.data.openRegistration) && (
+          <div className="mt-5 flex items-center justify-center gap-2 text-sm text-muted-foreground">
+            <span>已有账号？</span>
+            <Button type="button" variant="link" className="h-auto px-0 text-sm" asChild>
+              <Link to="/login">返回登录</Link>
+            </Button>
+          </div>
+        )}
+      </div>
     </div>
   )
 }