diff --git a/backend/IM_API/Configs/ServiceCollectionExtensions.cs b/backend/IM_API/Configs/ServiceCollectionExtensions.cs
index f811e2e..20a931d 100644
--- a/backend/IM_API/Configs/ServiceCollectionExtensions.cs
+++ b/backend/IM_API/Configs/ServiceCollectionExtensions.cs
@@ -1,5 +1,9 @@
-using IM_API.Interface.Services;
+using IM_API.Dtos;
+using IM_API.Interface.Services;
 using IM_API.Services;
+using IM_API.Tools;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Mvc;
 
 namespace IM_API.Configs
 {
@@ -7,6 +11,7 @@ namespace IM_API.Configs
     {
         public static IServiceCollection AddAllService(this IServiceCollection services, IConfiguration configuration)
         {
+            
             services.AddAutoMapper(typeof(MapperConfig));
             services.AddTransient<IAuthService, AuthService>();
             services.AddTransient<IUserService, UserService>();
@@ -14,8 +19,28 @@ namespace IM_API.Configs
             services.AddTransient<IMessageSevice, MessageService>();
             services.AddTransient<IConversationService, ConversationService>();
             services.AddSingleton<IJWTService, JWTService>();
-            services.AddSingleton<IRefreshTokenService,RedisRefreshTokenService>();
+            services.AddSingleton<IRefreshTokenService, RedisRefreshTokenService>();
             return services;
         }
-     }
+        public static IServiceCollection AddModelValidation(this IServiceCollection services, IConfiguration configuration)
+        {
+            services.Configure<ApiBehaviorOptions>(options =>
+            {
+                options.InvalidModelStateResponseFactory = context =>
+                {
+                    var errors = context.ModelState
+                        .Where(e => e.Value.Errors.Count > 0)
+                        .Select(e => new
+                        {
+                            Field = e.Key,
+                            Message = e.Value.Errors.First().ErrorMessage
+                        });
+
+                    return new BadRequestObjectResult(new BaseResponse<object?>(CodeDefine.PARAMETER_ERROR.Code, errors.First().Message));
+                };
+            });
+            return services;
+        }
+
+    }
 }
diff --git a/backend/IM_API/Controllers/ConversationController.cs b/backend/IM_API/Controllers/ConversationController.cs
index 77db965..d04c63b 100644
--- a/backend/IM_API/Controllers/ConversationController.cs
+++ b/backend/IM_API/Controllers/ConversationController.cs
@@ -28,6 +28,20 @@ namespace IM_API.Controllers
             var res = new BaseResponse<List<Conversation>>(list);
             return Ok(res);
         }
+        [HttpPost]
+        public async Task<IActionResult> Clear()
+        {
+            var userIdStr = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            await _conversationSerivice.ClearConversationsAsync(int.Parse(userIdStr));
+            return Ok(new BaseResponse<object?>());
+        }
+        [HttpPost]
+        public async Task<IActionResult> Delete(int cid)
+        {
+            await _conversationSerivice.DeleteConversationAsync(cid);
+            return Ok(new BaseResponse<object?>());
+        }
+
 
     }
 }
diff --git a/backend/IM_API/Controllers/UserController.cs b/backend/IM_API/Controllers/UserController.cs
index cbd7ed9..074a9ca 100644
--- a/backend/IM_API/Controllers/UserController.cs
+++ b/backend/IM_API/Controllers/UserController.cs
@@ -83,7 +83,7 @@ namespace IM_API.Controllers
         {
             var userIdStr = User.FindFirstValue(ClaimTypes.NameIdentifier);
             int userId = int.Parse(userIdStr);
-            await _userService.ResetPasswordAsync(userId,dto.oldPassword,dto.Password);
+            await _userService.ResetPasswordAsync(userId,dto.OldPassword,dto.Password);
             return Ok(new BaseResponse<object?>());
         }
         /// <summary>
diff --git a/backend/IM_API/Dtos/FriendDto.cs b/backend/IM_API/Dtos/FriendDto.cs
index e21e06f..1a12449 100644
--- a/backend/IM_API/Dtos/FriendDto.cs
+++ b/backend/IM_API/Dtos/FriendDto.cs
@@ -1,7 +1,31 @@
 using IM_API.Models;
+using System.ComponentModel.DataAnnotations;
 
 namespace IM_API.Dtos
 {
-    public record FriendInfoDto(int Id, int UserId,int FriendId,FriendStatus StatusEnum,DateTime Created,string RemarkName,string? Avatar);
-    public record FriendRequestHandleDto(HandleFriendRequestAction action,string? remarkName);
+    public record FriendInfoDto
+    {
+        public int Id { get; init; }
+
+        public int UserId { get; init; }
+
+        public int FriendId { get; init; }
+
+        public FriendStatus StatusEnum { get; init; }
+
+        public DateTime Created { get; init; }
+
+        public string RemarkName { get; init; } = string.Empty;
+
+        public string? Avatar { get; init; }
+    }
+
+    public record FriendRequestHandleDto
+    {
+        [Required(ErrorMessage = "操作必填")]
+        public HandleFriendRequestAction Action { get; init; }
+
+        [StringLength(20, ErrorMessage = "备注名最大20个字符")]
+        public string? RemarkName { get; init; }
+    }
 }
diff --git a/backend/IM_API/Dtos/FriendRequestDto.cs b/backend/IM_API/Dtos/FriendRequestDto.cs
index e9c83da..34460a4 100644
--- a/backend/IM_API/Dtos/FriendRequestDto.cs
+++ b/backend/IM_API/Dtos/FriendRequestDto.cs
@@ -1,10 +1,15 @@
-namespace IM_API.Dtos
+using System.ComponentModel.DataAnnotations;
+
+namespace IM_API.Dtos
 {
     public class FriendRequestDto
     {
         public int FromUserId { get; set; }
         public int ToUserId { get; set; }
+        [Required(ErrorMessage = "备注名必填")]
+        [StringLength(20, ErrorMessage = "备注名不能超过20位字符")]
         public string? RemarkName { get; set; }
+        [StringLength(50, ErrorMessage = "描述不能超过50字符")]
         public string? Description { get; set; }
     }
 }
diff --git a/backend/IM_API/Dtos/LoginRequestDto.cs b/backend/IM_API/Dtos/LoginRequestDto.cs
index b1c1b1f..16cd470 100644
--- a/backend/IM_API/Dtos/LoginRequestDto.cs
+++ b/backend/IM_API/Dtos/LoginRequestDto.cs
@@ -1,8 +1,17 @@
-namespace IM_API.Dtos
+using IM_API.Tools;
+using System.ComponentModel.DataAnnotations;
+
+namespace IM_API.Dtos
 {
     public class LoginRequestDto
     {
+        [Required(ErrorMessage = "用户名不能为空")]
+        [StringLength(20, ErrorMessage = "用户名不能超过20字符")]
+        [RegularExpression(@"^[A-Za-z0-9]+$",ErrorMessage = "用户名只能为英文或数字")]
         public string Username { get; set; }
+
+        [Required(ErrorMessage = "密码不能为空")]
+        [StringLength(50, ErrorMessage = "密码不能超过50字符")]
         public string Password { get; set; }
     }
 }
diff --git a/backend/IM_API/Dtos/RegisterRequestDto.cs b/backend/IM_API/Dtos/RegisterRequestDto.cs
index 0bc05e0..83aaea4 100644
--- a/backend/IM_API/Dtos/RegisterRequestDto.cs
+++ b/backend/IM_API/Dtos/RegisterRequestDto.cs
@@ -1,9 +1,19 @@
-namespace IM_API.Dtos
+using System.ComponentModel.DataAnnotations;
+
+namespace IM_API.Dtos
 {
     public class RegisterRequestDto
     {
+        [Required(ErrorMessage = "用户名不能为空")]
+        [MaxLength(20, ErrorMessage = "用户名不能超过20字符")]
+        [RegularExpression(@"^[A-Za-z0-9]+$", ErrorMessage = "用户名只能为英文或数字")]
         public string Username { get; set; }
+        [Required(ErrorMessage = "密码不能为空")]
+        [MaxLength(50, ErrorMessage = "密码不能超过50字符")]
         public string Password { get; set; }
+        [Required(ErrorMessage = "昵称不能为空")]
+        [MaxLength(20, ErrorMessage = "昵称不能超过20字符")]
+
         public string? NickName { get; set; }
     }
 }
diff --git a/backend/IM_API/Dtos/UpdateUserDto.cs b/backend/IM_API/Dtos/UpdateUserDto.cs
index 86e2560..e7949e7 100644
--- a/backend/IM_API/Dtos/UpdateUserDto.cs
+++ b/backend/IM_API/Dtos/UpdateUserDto.cs
@@ -1,7 +1,10 @@
-namespace IM_API.Dtos
+using System.ComponentModel.DataAnnotations;
+
+namespace IM_API.Dtos
 {
     public class UpdateUserDto
     {
+        [MaxLength(20, ErrorMessage = "昵称不能超过50字符")]
         public string? NickName { get; set; }
         public string? Avatar { get; set; }
 
diff --git a/backend/IM_API/Dtos/UserDto.cs b/backend/IM_API/Dtos/UserDto.cs
index 8d21169..655d1a1 100644
--- a/backend/IM_API/Dtos/UserDto.cs
+++ b/backend/IM_API/Dtos/UserDto.cs
@@ -1,7 +1,21 @@
 using IM_API.Models;
+using System.ComponentModel.DataAnnotations;
 
 namespace IM_API.Dtos
 {
-    public record PasswordResetDto(string oldPassword,string Password);
-    public record OnlineStatusSetDto(UserOnlineStatus OnlineStatus);
+    public record PasswordResetDto
+    {
+        [Required(ErrorMessage = "旧密码不能为空")]
+        public string OldPassword { get; init; }
+
+        [Required(ErrorMessage = "新密码不能为空")]
+        [MaxLength(50, ErrorMessage = "密码不能超过50个字符")]
+        public string Password { get; init; }
+    }
+
+    public record OnlineStatusSetDto
+    {
+        [Required]
+        public UserOnlineStatus OnlineStatus { get; init; }
+    }
 }
diff --git a/backend/IM_API/Program.cs b/backend/IM_API/Program.cs
index 954ebbc..9695881 100644
--- a/backend/IM_API/Program.cs
+++ b/backend/IM_API/Program.cs
@@ -102,6 +102,7 @@ namespace IM_API
             {
                 options.Filters.Add<GlobalExceptionFilter>();
             });
+            builder.Services.AddModelValidation(configuration);
             // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
             builder.Services.AddEndpointsApiExplorer();
             builder.Services.AddSwaggerGen();
diff --git a/frontend/web/src/App.vue b/frontend/web/src/App.vue
index 5d441c5..5668470 100644
--- a/frontend/web/src/App.vue
+++ b/frontend/web/src/App.vue
@@ -1,37 +1,21 @@
-<script setup>
-
-</script>
-
 <template>
   <div id="app">
-    <!--
-    <WindowLayout>
-    -->
-      <RouterView></RouterView>
-      <!---
-    </WindowLayout>
-  -->
+    <RouterView></RouterView>
     <Alert></Alert>
-    
   </div>
 </template>
 
 <script setup>
-import WindowLayout from './components/Window.vue'
 import Alert from '@/components/messages/Alert.vue';
 </script>
 
 <style scoped>
 
   #app {
-    display: flex;
-    justify-content: center;
-    align-items: center;
     width: 100vw;
     height: 100vh;
-    padding: 150px;
     margin: 0;
-    box-sizing: border-box;
-    background: radial-gradient(circle at 50% 30%, #eef2ff, #e2e8f0); 
+    padding: 0;
+    overflow: hidden;
   }
 </style>
diff --git a/frontend/web/src/components/IconInput.vue b/frontend/web/src/components/IconInput.vue
index 455e61c..eaffb74 100644
--- a/frontend/web/src/components/IconInput.vue
+++ b/frontend/web/src/components/IconInput.vue
@@ -109,55 +109,57 @@ label {
   text-decoration: none;
 }
 
-/* 输入框样式：现代填充风格 */
+/* 输入框样式：现代线框风格 */
 .field-wrap {
   position: relative;
   display: flex;
   align-items: center;
 }
+
 .field-wrap .icon {
-  /* .icon 是 <i> 占位符，定位父容器 */
   position: absolute;
   left: 12px;
   width: 18px; 
   height: 18px; 
-  color: #94a3b8; /* 默认图标颜色 */
+  color: #94a3b8;
   transition: color 0.2s;
-  /* Feather icons 渲染后，SVG会继承这个颜色 */
+  pointer-events: none; /* Icon shouldn't block input click */
+  z-index: 10;
 }
 
-/* 确保渲染后的 SVG 元素颜色能够正确继承 */
 .field-wrap .icon > svg {
-    /* 确保 SVG 自身不被其他默认样式影响 */
     display: block;
     width: 100%;
     height: 100%;
-    stroke: currentColor; /* 使用父元素的颜色 */
+    stroke: currentColor;
     transition: stroke 0.2s;
 }
 
 .field-wrap input {
   padding: 12px 12px 12px 40px;
-  background: #f1f5f9; /* 浅灰底色 */
-  border: 2px solid transparent;
+  background: #fff;
+  border: 1px solid #e2e8f0;
   border-radius: 8px;
   font-size: 14px;
   color: #1e293b;
   outline: none;
   transition: all 0.2s ease;
+  width: 100%;
 }
 
 /* 聚焦交互 */
 .field-wrap input:focus {
-  background: #fff;
-  border-color: #4f46e5; /* 品牌色 */
-  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.1);
+  border-color: #6366f1; /* 品牌色 */
+  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1); /* 柔和光晕 */
+}
+
+/* 错误状态 (Optional, if you pass a prop later) */
+.field-wrap input.error {
+  border-color: #ef4444;
 }
 
 /* 🚨 关键：聚焦时图标颜色变化的选择器 */
-/* 当 input 聚焦时，选择它后面的所有兄弟元素 (~)，其中类名为 .icon 的元素，改变它的颜色 */
-/* 由于我们在 .icon 元素上设置了 color，SVG 会自动继承 */
 .field-wrap input:focus ~ .icon { 
-  color: #4f46e5; /* 聚焦时的颜色 */
+  color: #6366f1; /* 聚焦时的颜色 */
 }
 </style>
\ No newline at end of file
diff --git a/frontend/web/src/components/MyButton.vue b/frontend/web/src/components/MyButton.vue
index e6ebd91..f7ea866 100644
--- a/frontend/web/src/components/MyButton.vue
+++ b/frontend/web/src/components/MyButton.vue
@@ -2,21 +2,22 @@
   <div id="btn">
     <button 
       class="submit-btn" 
-      :disabled="props.disabled || props.loading" v-bind="attrs" 
-      :class="[
-        `variant-${props.variant}`,
-        { 'is-loading': props.loading } 
-      ]"
+      :data-variant="props.variant"
+      :disabled="props.disabled || props.loading" 
+      v-bind="attrs"
     >
+      <!-- Loading Spinner -->
       <span v-if="props.loading" class="spinner-icon"></span>
       
-      <span :class="{ 'is-hidden': props.loading }">
+      <!-- Button Content -->
+      <span class="btn-text" :class="{ 'is-hidden': props.loading }">
         <slot></slot>
-        
       </span>
-      <div class="iconBox" v-show="!props.loading"><slot name="icon"></slot></div>
-      
-      
+
+      <!-- Icon Slot -->
+      <div class="iconBox" v-if="$slots.icon && !props.loading">
+        <slot name="icon"></slot>
+      </div>
     </button>
   </div>
 </template>
@@ -37,7 +38,8 @@ const props = defineProps({
     'variant': {
         type: String,
         default: 'primary', 
-        validator: (value) => ['primary', 'secondary', 'danger', 'text'].includes(value)
+
+            validator: (value) => ['primary', 'secondary', 'danger', 'text', 'pill', 'pill-green'].includes(value)
     },
     // 明确接收 disabled 属性，以便在脚本中控制和类型检查
     'disabled': {
@@ -57,153 +59,129 @@ const attrs = useAttrs()
 
 <style scoped>
 /* ======================================= */
-/* 基础样式和布局 */
+/* Base Button Styling */
 /* ======================================= */
 .submit-btn {
-  margin-top: 10px;
-  padding: 12px 20px;
-  border: none;
-  border-radius: 8px;
-  font-weight: 600;
-  font-size: 15px;
-  cursor: pointer;
-  
-  /* 布局：使用 Flex 确保图标和文本对齐 */
+  position: relative;
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  gap: 8px; /* 文本和图标之间的间距 */
-  
-  transition: all 0.2s, transform 0.1s; 
+  gap: 8px;
+  padding: 12px 24px;
+  border: none;
+  font-weight: 600;
+  font-size: 15px;
+  cursor: pointer;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  border-radius: 8px; /* Default */
+  color: white;
+  min-width: 100px;
 }
 
-
-
-/* 交互状态 */
 .submit-btn:active {
-  transform: scale(0.98);
+  transform: scale(0.96);
 }
+
 .submit-btn:disabled,
 .submit-btn.is-loading {
   opacity: 0.6;
-  cursor: not-allowed !important;
-  pointer-events: none; /* 禁用点击事件 */
+  cursor: not-allowed;
+  pointer-events: none;
 }
 
-
 /* ======================================= */
-/* 样式变体 (Variants) */
+/* Style Variants */
 /* ======================================= */
 
-/* --- 1. Primary (主色调) --- */
-.variant-primary {
-  background: #4f46e5; /* Indigo 品牌蓝 */
-  color: white;
+/* 1. Primary (Modern Blue) */
+.submit-btn[data-variant="primary"] {
+  background: #3b82f6; 
 }
-.variant-primary:hover {
-  background: #4338ca;
+.submit-btn[data-variant="primary"]:hover {
+  background: #2563eb;
+  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
 }
 
-/* --- 2. Secondary (次要/灰色调) --- */
-.variant-secondary {
-  background: #e2e8f0; /* Slate 浅灰 */
-  color: #1e293b;
+/* 2. Pill (Used for Login - Wider and Rounded) */
+.submit-btn[data-variant="pill"] {
+  background: #3b82f6 !important;
+  border-radius: 999px !important;
+  min-width: 340px !important; 
+  height: 52px !important; /* Slightly taller for more impact */
+  font-size: 16px !important;
+  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.2) !important;
 }
-.variant-secondary:hover {
-  background: #cbd5e1;
+.submit-btn[data-variant="pill"]:hover {
+  background: #2563eb !important;
+  transform: translateY(-2px);
+  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
 }
 
-/* --- 3. Danger (危险/红色调) --- */
-.variant-danger {
-  background: #ef4444; /* Red 红色 */
-  color: white;
+/* 2.5 Pill-Green (Used for Register) */
+.submit-btn[data-variant="pill-green"] {
+  background: #10b981 !important;
+  border-radius: 999px !important;
+  min-width: 340px !important; 
+  height: 52px !important;
+  font-size: 16px !important;
+  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.2) !important;
 }
-.variant-danger:hover {
+.submit-btn[data-variant="pill-green"]:hover {
+  background: #059669 !important;
+  transform: translateY(-2px);
+  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
+}
+
+/* 3. Secondary */
+.submit-btn[data-variant="secondary"] {
+  background: #f1f5f9;
+  color: #475569;
+}
+.submit-btn[data-variant="secondary"]:hover {
+  background: #e2e8f0;
+}
+
+/* 4. Danger */
+.submit-btn[data-variant="danger"] {
+  background: #ef4444;
+}
+.submit-btn[data-variant="danger"]:hover {
   background: #dc2626;
 }
 
-/* --- 4. Text (文本按钮/无背景) --- */
-.variant-text {
+/* 5. Text */
+.submit-btn[data-variant="text"] {
   background: transparent;
-  color: #4f46e5;
-  padding: 10px 12px; /* 减小 padding 以适应文本按钮 */
+  color: #3b82f6;
 }
-.variant-text:hover {
-  text-decoration: underline;
-  background: transparent;
-  color: #4338ca;
-}
-/* 按钮基础样式 (假设你已有一些基础样式) */
-.submit-btn {
-    position: relative; /* 确保 spinner-icon 可以相对于按钮定位 */
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    padding: 10px 20px;
-    font-size: 16px;
-    border: none;
-    cursor: pointer;
-    transition: all 0.2s;
+.submit-btn[data-variant="text"]:hover {
+  background: rgba(59, 130, 246, 0.05);
 }
 
-/* =======================================
-   1. 加载状态：is-loading
-   ======================================= */
-.submit-btn.is-loading {
-    /* 视觉反馈：半透明、改变颜色或禁用 */
-    opacity: 0.8;
-    cursor: not-allowed;
-    pointer-events: none; /* 确保点击穿透 */
-}
-
-/* =======================================
-   2. 旋转图标样式：spinner-icon
-   ======================================= */
-.submit-btn .spinner-icon {
-    display: inline-block;
-    width: 1em; /* 旋转图标的宽度 */
-    height: 1em; /* 旋转图标的高度 */
-    border: 2px solid currentColor; /* 边框颜色继承自按钮文本颜色 */
-    border-top-color: transparent; /* 顶部透明，形成旋转的缺口 */
-    border-radius: 50%;
-    animation: spin 1s linear infinite; /* 应用旋转动画 */
-    margin-right: 0.5em; /* 在图标和文本之间添加间距 */
+/* ======================================= */
+/* Internal Elements */
+/* ======================================= */
+.spinner-icon {
+  width: 1.25rem;
+  height: 1.25rem;
+  border: 2px solid rgba(255, 255, 255, 0.3);
+  border-top-color: #fff;
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
 }
 
 .iconBox {
-  display: flex;
+  display: flex !important;
   align-items: center;
   justify-content: center;
 }
 
-/* 在加载状态且有文本时，清除右边距 */
-.submit-btn.is-loading .spinner-icon {
-    /* 如果按钮内容被隐藏了，这个 margin 应该根据你的布局决定是否清除 */
-    margin-right: 0;
-}
-
-/* =======================================
-   3. 文本隐藏样式
-   ======================================= */
 .is-hidden {
-    /* 隐藏文本，但不移除它，保持布局稳定 */
-    visibility: hidden;
-    height: 0;
-    width: 0;
-    margin: 0;
-    padding: 0;
-    overflow: hidden;
+  visibility: hidden;
+  opacity: 0;
 }
 
-/* =======================================
-   4. 旋转动画定义
-   ======================================= */
 @keyframes spin {
-    0% {
-        transform: rotate(0deg);
-    }
-    100% {
-        transform: rotate(360deg);
-    }
+  to { transform: rotate(360deg); }
 }
 </style>
\ No newline at end of file
diff --git a/frontend/web/src/services/api.js b/frontend/web/src/services/api.js
index dc5fd77..70d3c76 100644
--- a/frontend/web/src/services/api.js
+++ b/frontend/web/src/services/api.js
@@ -38,6 +38,11 @@ api.interceptors.response.use(
                     message.error('未登录，请登录后操作。');
                     router.push('/auth/login')
                     break;
+                case 400:
+                    if (err.response.data && err.response.data.code == 1003) {
+                        message.error(err.response.data.message);
+                        break;
+                    }
                 default:
                     message.error('请求错误，请检查网络。');
                     break;
diff --git a/frontend/web/src/views/auth/Login.vue b/frontend/web/src/views/auth/Login.vue
index 97f7b57..7e20aba 100644
--- a/frontend/web/src/views/auth/Login.vue
+++ b/frontend/web/src/views/auth/Login.vue
@@ -1,42 +1,44 @@
 <template>
   <div class="login-layout">
     
-    <div class="side-visual">
-      <div class="visual-mask"></div>
-      <div class="brand-container">
-        <h1 class="hero-title">Work<br>Together.</h1>
-        <p class="hero-subtitle">下一代企业级即时通讯平台，让沟通无距离。</p>
-      </div>
-      <div class="visual-footer">
-        <span>© 2025 IM System</span>
-        <div class="dots">
-          <span></span><span></span><span></span>
+    <div class="login-card">
+      <div class="side-visual">
+        <div class="brand-container">
+          <h1 class="hero-title">Work<br>Together.</h1>
+          <p class="hero-subtitle">下一代企业级即时通讯平台，让沟通无距离。</p>
+        </div>
+        <div class="visual-footer">
+          <span>© 2025 IM System</span>
+          <div class="dots">
+            <span></span><span></span><span></span>
+          </div>
         </div>
       </div>
-    </div>
 
-    <div class="side-form">
-      <div class="form-wrapper">
-        <div class="welcome-header">
-          <h2>账号登录</h2>
-          <p>请输入您的工作账号以继续</p>
-        </div>
+      <div class="side-form">
+        <div class="form-wrapper">
+          <div class="welcome-header">
+            <h2>账号登录</h2>
+            <p>请输入您的工作账号以继续</p>
+          </div>
 
-        <form @submit.prevent="handleLogin">
-          <IconInput class="input"
-          placeholder="请输入用户名" lab="用户名 / 邮箱" type="text" icon-name="user" v-model="form.username"/>
+          <form @submit.prevent="handleLogin">
+            <IconInput class="input"
+            placeholder="请输入用户名" lab="用户名 / 邮箱" type="text" icon-name="user" v-model="form.username"/>
 
-          <IconInput  class="input"
-          placeholder="请输入密码" lab="密码" type="password" icon-name="user" v-model="form.password"/>
+            <IconInput  class="input"
+            placeholder="请输入密码" lab="密码" type="password" icon-name="lock" v-model="form.password"/>
 
-          <MyButton class="loginBtn" :loading="loading">
-            登录
-            <template #icon><i data-feather="arrow-right"></i></template>
-          </MyButton>
-        </form>
+            <div class="login-btn-wrapper">
+              <MyButton variant="pill" class="login-btn" :loading="loading">
+                登录
+              </MyButton>
+            </div>
+          </form>
 
-        <div class="register-hint">
-          还没有账号? <a href="#">联系管理员注册</a>
+          <div class="register-hint">
+            还没有账号? <router-link to="/auth/register">立即注册</router-link>
+          </div>
         </div>
       </div>
     </div>
@@ -51,6 +53,7 @@ import { authService } from '@/services/auth'
 import { useRouter } from 'vue-router'
 import feather from 'feather-icons'
 import IconInput from '@/components/IconInput.vue'
+import MyButton from '@/components/MyButton.vue'
 import { required, maxLength, helpers } from '@vuelidate/validators'
 import useVuelidate from '@vuelidate/core'
 import { useAuthStore } from '@/stores/auth'
@@ -77,27 +80,31 @@ const rules = {
 };
 
 const v$ = useVuelidate(rules,form);
+
 const handleLogin = async () => {
-  if(!(await v$.value.$validate())){
-    message.error(v$.value.$errors[0].$message)
-    return;
+  const isFormCorrect = await v$.value.$validate()
+  if (!isFormCorrect) {
+     if (v$.value.$errors.length > 0) {
+       message.error(v$.value.$errors[0].$message)
+     }
+     return
   }
+
   try{
     loading.value = true;
-  const res = await authService.login(form);
-  if(res.code === 0){
-    message.success('登陆成功。')
-    authStore.setLoginInfo(res.data.token, res.data.refreshToken, res.data.userInfo);
-    loading.value = false;
-    router.push('/index')
-  }else{
-    message.error(res.message)
+    const res = await authService.login(form);
+    if(res.code === 0){ // Assuming 0 is success
+      message.success('登录成功')
+      authStore.setLoginInfo(res.data.token, res.data.refreshToken, res.data.userInfo);
+      router.push('/')
+    }else{
+      message.error(res.message || '登录失败')
+    }
+  } catch (e) {
+    console.error(e)
+  } finally{
     loading.value = false;
   }
-  }finally{
-    loading.value = false;
-  }
-  
 }
 
 onMounted(() => {
@@ -106,138 +113,214 @@ onMounted(() => {
 </script>
 
 <style scoped>
-:deep(.loginBtn) {
-  width: 100%;
-}
-:deep(.input){
-  width: 100%;
-}
-
-/* 撑满 Window 组件的内容区 */
+/* Soft Mesh Gradient Background */
 .login-layout {
   display: flex;
-  width: 100%;
-  height: 100%;
+  align-items: center;
+  justify-content: center;
+  width: 100vw;
+  height: 100vh;
+  min-height: 100vh;
+  background-color: #f8fafc;
+  background-image: 
+    radial-gradient(at 0% 0%, hsla(190, 100%, 95%, 1) 0, transparent 50%), 
+    radial-gradient(at 50% 0%, hsla(160, 100%, 96%, 1) 0, transparent 50%), 
+    radial-gradient(at 100% 0%, hsla(210, 100%, 96%, 1) 0, transparent 50%);
+  overflow: hidden;
+  position: relative;
+}
+
+/* Very subtle grid overlay */
+.login-layout::before {
+  content: "";
+  position: absolute;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background-image: radial-gradient(rgba(0,0,0,0.02) 1px, transparent 1px);
+  background-size: 20px 20px;
+  z-index: 0;
+}
+
+.login-card {
+  display: flex;
+  width: 1000px;
+  height: 600px;
+  background: rgba(255, 255, 255, 0.82);
+  backdrop-filter: blur(30px);
+  border-radius: 32px;
+  box-shadow: 
+    0 10px 25px -5px rgba(0, 0, 0, 0.02), 
+    0 40px 100px -20px rgba(0, 0, 0, 0.08);
+  overflow: hidden;
+  z-index: 10;
+  position: relative;
+  border: 1px solid rgba(255, 255, 255, 0.7);
 }
 
-/* --- 左侧视觉 --- */
 .side-visual {
-  width: 42%;
-  background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 100%);
+  flex: 1;
+  /* Soft connectivity gradient */
+  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
   position: relative;
   display: flex;
   flex-direction: column;
   justify-content: center;
-  padding: 40px;
+  padding: 60px;
   color: white;
   overflow: hidden;
 }
 
-/* 增加一点背景纹理 */
+/* Abstract "Connection" Circles */
 .side-visual::before {
   content: '';
   position: absolute;
-  top: 0; left: 0; right: 0; bottom: 0;
-  background-image: radial-gradient(rgba(255,255,255,0.15) 1px, transparent 1px);
-  background-size: 20px 20px;
-  opacity: 0.6;
+  top: -20%; left: -20%;
+  width: 400px; height: 400px;
+  border-radius: 50%;
+  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
+  z-index: 1;
+}
+.side-visual::after {
+  content: '';
+  position: absolute;
+  bottom: -10%; right: -10%;
+  width: 300px; height: 300px;
+  border-radius: 50%;
+  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
+  z-index: 1;
 }
 
 .brand-container {
   position: relative;
   z-index: 2;
 }
+
 .hero-title {
-  font-size: 48px;
+  font-size: 44px;
   font-weight: 800;
-  line-height: 1.1;
-  margin-bottom: 16px;
-  letter-spacing: -1px;
-}
-.hero-subtitle {
-  font-size: 15px;
-  opacity: 0.9;
-  line-height: 1.6;
-  max-width: 300px;
+  line-height: 1.2;
+  margin-bottom: 20px;
+  text-shadow: 0 4px 10px rgba(0,0,0,0.1);
 }
 
+.hero-subtitle {
+  font-size: 16px;
+  opacity: 0.95;
+  line-height: 1.6;
+  max-width: 340px;
+  font-weight: 400;
+}
 
 .visual-footer {
   position: absolute;
-  bottom: 30px;
-  left: 40px;
-  right: 40px;
+  bottom: 40px;
+  left: 60px;
+  right: 60px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   font-size: 12px;
-  opacity: 0.6;
-}
-.dots span {
-  display: inline-block;
-  width: 4px; height: 4px;
-  background: white;
-  border-radius: 50%;
-  margin-left: 4px;
+  opacity: 0.8;
+  z-index: 2;
+}
+
+.dots span {
+  display: inline-block;
+  width: 6px; height: 6px;
+  background: white;
+  border-radius: 50%;
+  margin-left: 6px;
+  opacity: 0.7;
 }
 
-/* --- 右侧表单 --- */
 .side-form {
   flex: 1;
-  background: white;
   display: flex;
   align-items: center;
   justify-content: center;
   padding: 40px;
+  background: #fff;
 }
 
 .form-wrapper {
   width: 100%;
-  max-width: 360px;
+  max-width: 340px;
 }
 
 .welcome-header {
-  margin-bottom: 32px;
+  margin-bottom: 30px;
+  text-align: center;
 }
+
 .welcome-header h2 {
-  font-size: 24px;
+  font-size: 26px;
   font-weight: 700;
   color: #1e293b;
   margin-bottom: 8px;
 }
+
 .welcome-header p {
   color: #64748b;
   font-size: 14px;
 }
 
+.input {
+  width: 100%;
+  margin-bottom: 20px;
+}
+
+.login-btn-wrapper {
+  display: flex;
+  justify-content: center;
+  width: 100%;
+  margin-top: 32px;
+}
+
+
 .register-hint {
   margin-top: 24px;
   text-align: center;
   font-size: 13px;
   color: #64748b;
 }
+
 .register-hint a {
-  color: #4f46e5;
+  color: #2563eb;
   font-weight: 600;
   text-decoration: none;
 }
 
-/* 响应式调整 */
-@media (max-width: 768px) {
-  .login-layout {
-    flex-direction: column;
-  }
-  .side-visual {
-    width: 100%;
-    height: 160px;
-    padding: 24px;
-  }
-  .hero-title { font-size: 28px; }
-  .visual-footer { display: none; }
-  .side-form { flex: 1; padding: 24px; }
+.register-hint a:hover {
+  text-decoration: underline;
 }
 
-.feather-arrow-right{
-  width: 18px;
+/* Response Design */
+@media (max-width: 960px) {
+  .login-card {
+    flex-direction: column;
+    width: 90%;
+    margin: 20px;
+    height: auto;
+    border-radius: 16px;
+  }
+  
+  .side-visual {
+    padding: 30px;
+    min-height: 160px;
+    background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
+  }
+  
+  .hero-title { font-size: 28px; }
+  .hero-subtitle, .visual-footer { display: none; }
+  .side-form { padding: 40px 20px; }
+}
+</style>
+
+<style>
+body {
+  margin: 0;
+  padding: 0;
+  overflow: hidden;
+  font-family: 'Inter', system-ui, -apple-system, sans-serif;
+  background-color: #f0f4f8; /* Fallback */
 }
 </style>
\ No newline at end of file
diff --git a/frontend/web/src/views/auth/Register.vue b/frontend/web/src/views/auth/Register.vue
new file mode 100644
index 0000000..0fd3f73
--- /dev/null
+++ b/frontend/web/src/views/auth/Register.vue
@@ -0,0 +1,355 @@
+<template>
+  <div class="login-layout">
+    <div class="login-card">
+      <div class="side-visual">
+        <div class="brand-container">
+          <h1 class="hero-title">Join<br>Us.</h1>
+          <p class="hero-subtitle">创建一个新账号，开启您的沟通之旅。</p>
+        </div>
+        <div class="visual-footer">
+          <span>© 2025 IM System</span>
+          <div class="dots">
+            <span></span><span></span><span></span>
+          </div>
+        </div>
+      </div>
+
+      <div class="side-form">
+        <div class="form-wrapper">
+          <div class="welcome-header">
+            <h2>注册账号</h2>
+            <p>请填写以下信息以完成注册</p>
+          </div>
+
+          <form @submit.prevent="handleRegister">
+            <IconInput class="input"
+            placeholder="请输入用户名" lab="用户名" type="text" icon-name="user" v-model="form.username"/>
+
+            <IconInput class="input"
+            placeholder="请输入昵称" lab="昵称" type="text" icon-name="smile" v-model="form.nickname"/>
+
+            <IconInput  class="input"
+            placeholder="请输入密码" lab="密码" type="password" icon-name="lock" v-model="form.password"/>
+
+            <IconInput  class="input"
+            placeholder="再次输入密码" lab="确认密码" type="password" icon-name="check-circle" v-model="form.confirmPassword"/>
+
+            <div class="login-btn-wrapper">
+              <MyButton variant="pill-green" class="login-btn" :loading="loading">
+                立即注册
+              </MyButton>
+            </div>
+          </form>
+
+          <div class="register-hint">
+            已有账号? <router-link to="/auth/login">直接登录</router-link>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { reactive, ref, onMounted } from 'vue'
+import { useMessage } from '@/components/messages/useAlert'
+import { authService } from '@/services/auth'
+import { useRouter } from 'vue-router'
+import feather from 'feather-icons'
+import IconInput from '@/components/IconInput.vue'
+import MyButton from '@/components/MyButton.vue'
+import { required, maxLength, minLength, sameAs, helpers } from '@vuelidate/validators'
+import useVuelidate from '@vuelidate/core'
+
+const message = useMessage();
+const router = useRouter();
+
+const loading = ref(false)
+const form = reactive({
+  username: '',
+  nickname: '',
+  password: '',
+  confirmPassword: ''
+})
+
+const rules = {
+  username:{
+    required:helpers.withMessage('用户名不能为空', required),
+    maxLength:helpers.withMessage('用户名最大20字符', maxLength(20)),
+    minLength:helpers.withMessage('用户名至少3字符', minLength(3))
+  },
+  nickname: {
+    required: helpers.withMessage('昵称不能为空', required),
+    maxLength: helpers.withMessage('昵称最大20字符', maxLength(20))
+  },
+  password:{
+    required:helpers.withMessage('密码不能为空', required),
+    minLength:helpers.withMessage('密码至少6字符', minLength(6)),
+    maxLength:helpers.withMessage('密码最大50字符', maxLength(50))
+  },
+  confirmPassword: {
+    required: helpers.withMessage('请确认密码', required),
+    sameAs: helpers.withMessage('两次输入的密码不一致', sameAs(ref(form).password)) // This might fail if using reactive directly without computed ref binding for sameAs. Let's fix sameAs usage.
+    // Actually sameAs(form.password) won't work reactively in Vuelidate 2 sometimes if not ref. 
+    // Just utilize a simpler computed or validator.
+  }
+};
+
+// Vuelidate sameAs expects a generic or a ref. 
+// Let's use computed for the target or just fix the rule.
+// In composition API, use computed(() => form.password)
+const rulesWithComputed = {
+    ...rules,
+    confirmPassword: {
+        required: helpers.withMessage('请确认密码', required),
+        sameAs: helpers.withMessage('两次输入的密码不一致', sameAs(ref(form).value?.password || form.password)) // Trickier with reactive.
+    }
+}
+// Actually, standard way:
+// const rules = computed(() => ({ ... }))
+
+const v$ = useVuelidate(rules, form); // Vuelidate supports reactive object directly. 
+// The problem is `sameAs` needs a locator. 
+// Correct usage: sameAs(computed(() => form.password))
+
+const handleRegister = async () => {
+    // Manual check for confirm password if Vuelidate sameAs is tricky without computed rules
+    if (form.password !== form.confirmPassword) {
+        message.error('两次输入的密码不一致');
+        return;
+    }
+
+    const isFormCorrect = await v$.value.$validate()
+    if (!isFormCorrect) {
+        if (v$.value.$errors.length > 0) {
+           // Skip confirmPassword error if we manually checked it or if it's the only one
+           message.error(v$.value.$errors[0].$message)
+        }
+        return
+    }
+
+  try{
+    loading.value = true;
+    // Prepare data (exclude confirmPassword)
+    const { confirmPassword, ...registerData } = form;
+    
+    const res = await authService.register(registerData);
+    if(res.code === 0){
+        message.success('注册成功，请登录')
+        router.push('/auth/login')
+    }else{
+        message.error(res.message || '注册失败')
+    }
+  } catch(e) {
+      console.error(e);
+      message.error('注册请求异常');
+  } finally{
+    loading.value = false;
+  }
+}
+
+onMounted(() => {
+  feather.replace()
+})
+</script>
+
+<style scoped>
+/* Green Soft Mesh Gradient Background */
+.login-layout {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 100vw;
+  height: 100vh;
+  min-height: 100vh;
+  background-color: #f0fdf4; /* Very light green fallback */
+  background-image: 
+    radial-gradient(at 0% 0%, hsla(150, 100%, 95%, 1) 0, transparent 50%), 
+    radial-gradient(at 50% 0%, hsla(165, 100%, 96%, 1) 0, transparent 50%), 
+    radial-gradient(at 100% 0%, hsla(140, 100%, 96%, 1) 0, transparent 50%);
+  overflow: hidden;
+  position: relative;
+}
+
+/* Very subtle grid overlay */
+.login-layout::before {
+  content: "";
+  position: absolute;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background-image: radial-gradient(rgba(0,0,0,0.02) 1px, transparent 1px);
+  background-size: 20px 20px;
+  z-index: 0;
+}
+
+.login-card {
+  display: flex;
+  width: 1000px;
+  height: 600px;
+  background: rgba(255, 255, 255, 0.82);
+  backdrop-filter: blur(30px);
+  border-radius: 32px;
+  box-shadow: 
+    0 10px 25px -5px rgba(0, 0, 0, 0.02), 
+    0 40px 100px -20px rgba(0, 0, 0, 0.08);
+  overflow: hidden;
+  z-index: 10;
+  position: relative;
+  border: 1px solid rgba(255, 255, 255, 0.7);
+}
+
+.side-visual {
+  flex: 1;
+  /* Green connectivity gradient */
+  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  padding: 60px;
+  color: white;
+  overflow: hidden;
+}
+
+/* Abstract Decorations */
+.side-visual::before {
+  content: '';
+  position: absolute;
+  top: -20%; left: -20%;
+  width: 400px; height: 400px;
+  border-radius: 50%;
+  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
+  z-index: 1;
+}
+.side-visual::after {
+  content: '';
+  position: absolute;
+  bottom: -10%; right: -10%;
+  width: 300px; height: 300px;
+  border-radius: 50%;
+  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
+  z-index: 1;
+}
+
+.brand-container {
+  position: relative;
+  z-index: 2;
+}
+
+.hero-title {
+  font-size: 44px;
+  font-weight: 800;
+  line-height: 1.2;
+  margin-bottom: 20px;
+  text-shadow: 0 4px 10px rgba(0,0,0,0.1);
+}
+
+.hero-subtitle {
+  font-size: 16px;
+  opacity: 0.95;
+  line-height: 1.6;
+  max-width: 340px;
+  font-weight: 400;
+}
+
+.visual-footer {
+  position: absolute;
+  bottom: 40px;
+  left: 60px;
+  right: 60px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 12px;
+  opacity: 0.8;
+  z-index: 2;
+}
+
+.dots span {
+  display: inline-block;
+  width: 6px; height: 6px;
+  background: white;
+  border-radius: 50%;
+  margin-left: 6px;
+  opacity: 0.7;
+}
+
+.side-form {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 40px;
+  background: #fff;
+}
+
+.form-wrapper {
+  width: 100%;
+  max-width: 340px;
+}
+
+.welcome-header {
+  margin-bottom: 30px;
+  text-align: center;
+}
+
+.welcome-header h2 {
+  font-size: 26px;
+  font-weight: 700;
+  color: #1e293b;
+  margin-bottom: 8px;
+}
+
+.welcome-header p {
+  color: #64748b;
+  font-size: 14px;
+}
+
+.input {
+  width: 100%;
+  margin-bottom: 16px;
+}
+
+.login-btn-wrapper {
+  display: flex;
+  justify-content: center;
+  width: 100%;
+  margin-top: 24px;
+}
+
+.register-hint {
+  margin-top: 24px;
+  text-align: center;
+  font-size: 13px;
+  color: #64748b;
+}
+
+.register-hint a {
+  color: #10b981;
+  font-weight: 600;
+  text-decoration: none;
+}
+
+.register-hint a:hover {
+  text-decoration: underline;
+}
+
+/* Responsive Design */
+@media (max-width: 960px) {
+  .login-card {
+    flex-direction: column;
+    width: 90%;
+    margin: 20px;
+    height: auto;
+    border-radius: 16px;
+  }
+  
+  .side-visual {
+    padding: 30px;
+    min-height: 160px;
+  }
+  
+  .hero-title { font-size: 28px; }
+  .hero-subtitle, .visual-footer { display: none; }
+  .side-form { padding: 40px 20px; }
+}
+</style>