Refactor admin dashboard and standardize UI shells

src/TaxBaik.Web.Client/Components/Admin/Pages/Announcements/AnnouncementEdit.razor

@@ -12,14 +12,9 @@
 
 <PageTitle>@(Id.HasValue ? "공지 수정" : "공지 등록")</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Homepage</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "공지 수정" : "공지 등록")</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="@(Id.HasValue ? "공지 수정" : "공지 등록")" Eyebrow="Homepage" />
 
-<MudPaper Class="admin-surface" Elevation="0">
+<AdminEditorPanel Loading="@isSaving" SkeletonContent="@null">
     <MudForm @ref="form">
         <MudGrid>
             <MudItem xs="12">
@@ -89,7 +84,7 @@
             </MudButton>
         </div>
     </MudForm>
-</MudPaper>
+</AdminEditorPanel>
 
 @code {
     [Parameter] public int? Id { get; set; }

src/TaxBaik.Web.Client/Components/Admin/Pages/Announcements/AnnouncementList.razor

@@ -10,23 +10,20 @@
 
 <PageTitle>공지사항 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Homepage</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">공지사항 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">홈페이지 상단에 노출되는 공지사항을 등록하고 관리합니다.</MudText>
-    </div>
+<AdminPageHeader Title="공지사항 관리" Eyebrow="Homepage" Subtitle="홈페이지 상단에 노출되는 공지사항을 등록하고 관리합니다.">
     <MudButton Variant="Variant.Filled" Color="Color.Primary"
                StartIcon="@Icons.Material.Filled.Add"
                Href="/taxbaik/admin/announcements/create">
         공지 등록
     </MudButton>
-</section>
+</AdminPageHeader>
 
-<div class="d-flex pa-4 gap-4 align-center">
+<AdminSearchBar>
+    <SearchContent>
         <MudTextField @bind-Value="searchQuery" Placeholder="공지사항 제목 검색..." Adornment="Adornment.Start" 
                       AdornmentIcon="@Icons.Material.Filled.Search" IconSize="Size.Medium" Class="flex-grow-1" Immediate="true" Clearable="true" />
-</div>
+    </SearchContent>
+</AdminSearchBar>
 
 <AdminDataPanel Loading="@(announcements is null)" SkeletonContent="@AnnouncementSkeleton">
     @if (announcements is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientDetail.razor

@@ -11,13 +11,7 @@
 
 <PageTitle>고객 상세</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Client Details</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">고객 상세</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객 정보와 상담 이력을 관리합니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="고객 상세" Eyebrow="Client Details" Subtitle="고객 정보와 상담 이력을 관리합니다." />
 
 @if (client == null)
 {

src/TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientEdit.razor

@@ -12,14 +12,10 @@
 
 <PageTitle>@(Id.HasValue ? "고객 수정" : "고객 등록")</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "고객 수정" : "고객 등록")</MudText>
-    </div>
+<AdminPageHeader Title="@(Id.HasValue ? "고객 수정" : "고객 등록")" Eyebrow="CRM">
     <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/clients"
                StartIcon="@Icons.Material.Filled.ArrowBack">목록으로</MudButton>
-</section>
+</AdminPageHeader>
 
 <AdminEditorPanel Loading="@isLoading" SkeletonContent="@ClientEditSkeleton">
     @if (isLoading)

src/TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientList.razor

@@ -21,7 +21,8 @@
 </AdminPageHeader>
 
 @* 검색/필터 바 *@
-<MudPaper Class="admin-surface mb-3 pa-3" Elevation="0">
+<AdminSearchBar>
+    <SearchContent>
         <MudGrid>
             <MudItem xs="12" md="5">
                 <MudTextField @bind-Value="searchText" Label="검색 (이름·연락처·회사명)"
@@ -31,14 +32,13 @@
             <MudItem xs="12" md="3">
                 <CommonCodeSelect @bind-Value="statusFilter" Group="CLIENT_STATUS" Label="상태" Placeholder="전체" Clearable="true" />
             </MudItem>
-        <MudItem xs="12" md="2" Class="d-flex align-center">
-            <MudButton Variant="Variant.Outlined" OnClick="@SearchAsync" FullWidth="true">검색</MudButton>
-        </MudItem>
-        <MudItem xs="12" md="2" Class="d-flex align-center">
-            <MudButton Variant="Variant.Text" OnClick="@ResetAsync" FullWidth="true">초기화</MudButton>
-        </MudItem>
         </MudGrid>
-</MudPaper>
+    </SearchContent>
+    <Actions>
+        <MudButton Variant="Variant.Outlined" OnClick="@SearchAsync">검색</MudButton>
+        <MudButton Variant="Variant.Text" OnClick="@ResetAsync">초기화</MudButton>
+    </Actions>
+</AdminSearchBar>
 
 <AdminDataPanel Loading="@(clients is null)" SkeletonContent="@ClientListSkeleton">
     @if (clients is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyCreate.razor

@@ -8,14 +8,9 @@
 
 <PageTitle>고객사 등록</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Settings</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">새 고객사 등록</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">새로운 고객사를 추가합니다.</MudText>
-    </div>
+<AdminPageHeader Title="새 고객사 등록" Eyebrow="Settings" Subtitle="새로운 고객사를 추가합니다.">
     <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.Close" @onclick="GoBack">취소</MudButton>
-</section>
+</AdminPageHeader>
 
 <MudPaper Class="pa-4 mt-4" Elevation="1">
     <CompanyForm ButtonText="등록" OnSubmit="HandleCreate" OnCancel="GoBack" />

src/TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyEdit.razor

@@ -9,14 +9,9 @@
 
 <PageTitle>고객사 수정</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Settings</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">고객사 수정</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객사 정보를 수정합니다.</MudText>
-    </div>
+<AdminPageHeader Title="고객사 수정" Eyebrow="Settings" Subtitle="고객사 정보를 수정합니다.">
     <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.Close" @onclick="GoBack">취소</MudButton>
-</section>
+</AdminPageHeader>
 
 <AdminEditorPanel Loading="@isLoading" SkeletonContent="@CompanySkeleton">
     @if (formModel == null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyList.razor

@@ -6,15 +6,10 @@
 
 <PageTitle>고객사 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Settings</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">고객사 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">등록된 고객사를 관리하고 새로운 고객사를 추가합니다.</MudText>
-    </div>
+<AdminPageHeader Title="고객사 관리" Eyebrow="Settings" Subtitle="등록된 고객사를 관리하고 새로운 고객사를 추가합니다.">
     <MudButton Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Add"
         Href="/taxbaik/admin/companies/create">새 고객사 등록</MudButton>
-</section>
+</AdminPageHeader>
 
 <MudPaper Class="admin-surface mb-4 mt-4" Elevation="0">
     <MudStack Row="true" AlignItems="AlignItems.Center" Justify="Justify.SpaceBetween">

src/TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor

@@ -9,13 +9,7 @@
 
 <PageTitle>상담 활동 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">상담 활동 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">초기 렌더 진단용 최소 화면입니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="상담 활동 관리" Eyebrow="CRM & 세무관리" Subtitle="초기 렌더 진단용 최소 화면입니다." />
 
 <AdminDataPanel Loading="@(activities is null)" SkeletonContent="@ActivitySkeleton">
     @if (activities is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor

@@ -10,23 +10,17 @@
 
 <PageTitle>계약 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">계약 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객 계약과 월 정기수익을 함께 관리합니다.</MudText>
+<AdminPageHeader Title="계약 관리" Eyebrow="CRM & 세무관리" Subtitle="고객 계약과 월 정기수익을 함께 관리합니다.">
+    <MudStack Row="true" AlignItems="AlignItems.Center" Spacing="2">
         @if (mrr > 0)
         {
-            <MudText Typo="Typo.body2" Class="mt-2">
-                월 정기수익:
-                <MudChip T="string" Size="Size.Small" Color="Color.Primary" Variant="Variant.Filled">₩@mrr.ToString("N0")</MudChip>
-            </MudText>
+            <MudChip T="string" Size="Size.Small" Color="Color.Primary" Variant="Variant.Filled">월 정기수익 ₩@mrr.ToString("N0")</MudChip>
         }
-    </div>
         <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="PrepareCreate" StartIcon="@Icons.Material.Filled.Add" id="btn-add-contract">
             새 계약 추가
         </MudButton>
-</section>
+    </MudStack>
+</AdminPageHeader>
 
 <AdminEditorPanel Loading="@(contracts is null)" SkeletonContent="@ContractSkeleton">
 @if (contracts is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Dashboard.razor

@@ -1,14 +1,5 @@
 @page "/admin/dashboard"
 @rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
+@attribute [Authorize]
 
-<PageTitle>대시보드</PageTitle>
-
-<section style="padding: 24px;">
-    <h1 style="margin: 0 0 12px 0; font-size: 1.8rem;">대시보드</h1>
-    <p style="margin: 0 0 12px 0;">관리자 SPA 부팅 검증용 최소 화면입니다.</p>
-    <ul>
-        <li>WASM 부팅 성공 여부</li>
-        <li>라우팅 성공 여부</li>
-        <li>JS interop 예외 여부</li>
-    </ul>
-</section>
+<DashboardOverview />

src/TaxBaik.Web.Client/Components/Admin/Pages/DashboardOverview.razor

@@ -0,0 +1,240 @@
+@inject TaxBaik.Web.Client.Components.Admin.Services.IAdminDashboardClient DashboardClient
+@inject NavigationManager Navigation
+
+<PageTitle>대시보드</PageTitle>
+
+<AdminPageHeader Title="대시보드" Eyebrow="Home" Subtitle="운영 현황과 바로가기 작업을 한 화면에서 확인합니다.">
+    <MudButton Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Refresh" Disabled="@loading" @onclick="ReloadAsync">
+        새로고침
+    </MudButton>
+</AdminPageHeader>
+
+<MudGrid Class="admin-dashboard-grid">
+    @if (loading)
+    {
+        <MudItem xs="12">
+            <AdminDataPanel Loading="true" />
+        </MudItem>
+    }
+    else
+    {
+        <MudItem xs="12" sm="6" md="3">
+            <AdminMetricCard Label="이번 달 문의" Value="@summary?.ThisMonthInquiries" Caption="이번 달 접수된 문의" Accent="accent-blue" Icon="@Icons.Material.Filled.MarkUnreadChatAlt" />
+        </MudItem>
+        <MudItem xs="12" sm="6" md="3">
+            <AdminMetricCard Label="신규 문의" Value="@summary?.NewInquiries" Caption="처리 대기 중인 문의" Accent="accent-amber" Icon="@Icons.Material.Filled.PriorityHigh" />
+        </MudItem>
+        <MudItem xs="12" sm="6" md="3">
+            <AdminMetricCard Label="총 게시글" Value="@summary?.TotalPosts" Caption="홈페이지 블로그 누적" Accent="accent-slate" Icon="@Icons.Material.Filled.Article" />
+        </MudItem>
+        <MudItem xs="12" sm="6" md="3">
+            <AdminMetricCard Label="게시중 글" Value="@summary?.PublishedPosts" Caption="현재 공개 중인 글" Accent="accent-green" Icon="@Icons.Material.Filled.Public" />
+        </MudItem>
+
+        <MudItem xs="12" md="5">
+            <AdminDataPanel>
+                <AdminPageHeader Title="빠른 작업" Subtitle="자주 쓰는 관리 화면으로 바로 이동합니다." />
+                <MudStack Spacing="1">
+                    @foreach (var action in QuickActions)
+                    {
+                        <MudButton Variant="Variant.Outlined" Color="Color.Primary" FullWidth="true" StartIcon="@action.Icon" OnClick="@(() => Navigation.NavigateTo(action.Href))">
+                            @action.Label
+                        </MudButton>
+                    }
+                </MudStack>
+            </AdminDataPanel>
+        </MudItem>
+
+        <MudItem xs="12" md="7">
+            <AdminDataPanel>
+                <AdminPageHeader Title="최근 문의" Subtitle="최신 처리 흐름을 빠르게 확인합니다." />
+                @if (summary?.RecentInquiries is null || !summary.RecentInquiries.Any())
+                {
+                    <AdminEmptyState Icon="@Icons.Material.Filled.Inbox" Message="새로운 문의가 들어오면 이 영역에 표시됩니다." />
+                }
+                else
+                {
+                    <MudSimpleTable Dense="true" Class="admin-table">
+                        <thead>
+                            <tr>
+                                <th>제목</th>
+                                <th>상태</th>
+                                <th>접수일</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            @foreach (var inquiry in summary.RecentInquiries)
+                            {
+                                <tr>
+                                    <td>@inquiry.Name</td>
+                                    <td>@inquiry.Status</td>
+                                    <td>@inquiry.CreatedAt.ToString("yyyy-MM-dd")</td>
+                                </tr>
+                            }
+                        </tbody>
+                    </MudSimpleTable>
+                }
+            </AdminDataPanel>
+        </MudItem>
+
+        <MudItem xs="12" md="6">
+            <AdminDataPanel Loading="@statsLoading">
+                <AdminPageHeader Title="월간 통계" Subtitle="문의 처리 전환과 상태 분포를 확인합니다." />
+                @if (monthlyStats is not null)
+                {
+                    <div class="admin-stats-grid">
+                        <div class="admin-stat">
+                            <span class="admin-stat-label">총 문의</span>
+                            <strong class="admin-stat-value">@monthlyStats.TotalInquiries</strong>
+                        </div>
+                        <div class="admin-stat">
+                            <span class="admin-stat-label">상담 중</span>
+                            <strong class="admin-stat-value">@monthlyStats.ConsultingCount</strong>
+                        </div>
+                        <div class="admin-stat">
+                            <span class="admin-stat-label">완료</span>
+                            <strong class="admin-stat-value">@monthlyStats.CompletedCount</strong>
+                        </div>
+                        <div class="admin-stat">
+                            <span class="admin-stat-label">완료율</span>
+                            <strong class="admin-stat-value">@monthlyStats.CompletionRate.ToString("0.#")%</strong>
+                        </div>
+                    </div>
+                    <div class="admin-chart">
+                        <div class="admin-chart-header">
+                            <span>최근 6개월 문의 추세</span>
+                            <span>@monthlyStats.Month</span>
+                        </div>
+                        <div class="admin-chart-bars">
+                            @foreach (var point in trendPoints)
+                            {
+                                <div class="admin-chart-row">
+                                    <span>@point.Label</span>
+                                    <div class="admin-chart-track">
+                                        <div class="admin-chart-fill accent-blue" style="width:@BarWidth(point.Total, trendMax)"></div>
+                                    </div>
+                                    <span>@point.Total</span>
+                                </div>
+                            }
+                        </div>
+                    </div>
+                }
+            </AdminDataPanel>
+        </MudItem>
+
+        <MudItem xs="12" md="6">
+            <AdminDataPanel>
+                <AdminPageHeader Title="바로가기" Subtitle="운영 중 자주 사용하는 화면으로 이동합니다." />
+                <div class="admin-quick-grid">
+                    @foreach (var action in QuickActions)
+                    {
+                        <MudPaper Class="admin-quick-card" Elevation="0" @onclick="@(() => Navigation.NavigateTo(action.Href))">
+                            <MudIcon Icon="@action.Icon" />
+                            <span>@action.Label</span>
+                        </MudPaper>
+                    }
+                </div>
+            </AdminDataPanel>
+        </MudItem>
+
+        <MudItem xs="12" md="6">
+            <AdminDataPanel>
+                <AdminPageHeader Title="운영 메모" Subtitle="이번 배포에서 확인해야 할 핵심 포인트입니다." />
+                <div class="admin-note-list">
+                    <div>대시보드와 메뉴가 역할 기반으로 필터링됩니다.</div>
+                    <div>공통 CRUD 화면은 `AdminPageHeader`/`AdminCrudPageShell` 슬롯 패턴을 따릅니다.</div>
+                    <div>월간 통계는 문의 전환 흐름을 빠르게 보는 용도입니다.</div>
+                </div>
+            </AdminDataPanel>
+        </MudItem>
+
+        <MudItem xs="12" md="6">
+            <AdminDataPanel>
+                <AdminPageHeader Title="알림" Subtitle="운영 상태를 빠르게 점검합니다." />
+                <MudStack Spacing="1">
+                    <MudAlert Severity="@(summary is not null && summary.NewInquiries > 0 ? Severity.Warning : Severity.Info)">
+                        @(summary is not null && summary.NewInquiries > 0
+                            ? $"처리 대기 중인 신규 문의가 {summary.NewInquiries}건 있습니다."
+                            : "현재 신규 문의가 없습니다.")
+                    </MudAlert>
+                    <MudAlert Severity="@(summary is not null && summary.PublishedPosts < summary.TotalPosts ? Severity.Info : Severity.Success)">
+                        @(summary is not null && summary.PublishedPosts < summary.TotalPosts
+                            ? "비공개 중인 게시글이 있어 발행 상태 확인이 필요합니다."
+                            : "게시글 발행 상태가 안정적입니다.")
+                    </MudAlert>
+                </MudStack>
+            </AdminDataPanel>
+        </MudItem>
+    }
+</MudGrid>
+
+@code {
+    private bool loading = true;
+    private bool statsLoading = true;
+    private AdminDashboardSummary? summary;
+    private TaxBaik.Web.Client.Components.Admin.Services.MonthlyStatsDto? monthlyStats;
+    private readonly List<(string Label, int Total)> trendPoints = [];
+
+    private static readonly (string Label, string Href, string Icon)[] QuickActions =
+    [
+        ("공지 등록", "/taxbaik/admin/announcements/create", Icons.Material.Filled.Campaign),
+        ("고객사 등록", "/taxbaik/admin/companies/create", Icons.Material.Filled.Business),
+        ("문의 관리", "/taxbaik/admin/inquiries", Icons.Material.Filled.Inbox),
+        ("설정 열기", "/taxbaik/admin/settings", Icons.Material.Filled.Settings),
+    ];
+
+    protected override async Task OnInitializedAsync()
+    {
+        await LoadAsync();
+        await LoadStatsAsync();
+        await LoadTrendAsync();
+    }
+
+    private async Task ReloadAsync()
+    {
+        await LoadAsync();
+    }
+
+    private async Task LoadAsync()
+    {
+        loading = true;
+        try
+        {
+            summary = await DashboardClient.GetSummaryAsync();
+        }
+        finally
+        {
+            loading = false;
+        }
+    }
+
+    private async Task LoadStatsAsync()
+    {
+        statsLoading = true;
+        try
+        {
+            monthlyStats = await DashboardClient.GetMonthlyStatsAsync();
+        }
+        finally
+        {
+            statsLoading = false;
+        }
+    }
+
+    private async Task LoadTrendAsync()
+    {
+        trendPoints.Clear();
+        var today = DateTime.Today;
+        for (var i = 5; i >= 0; i--)
+        {
+            var month = today.AddMonths(-i);
+            var monthly = await DashboardClient.GetMonthlyStatsAsync(month.ToString("yyyy-MM"));
+            trendPoints.Add(($"{month:MM}", monthly.TotalInquiries));
+        }
+    }
+
+    private static string BarWidth(int value, int total)
+        => total <= 0 ? "0%" : $"{Math.Max(6, (int)Math.Round(value * 100.0 / total))}%";
+
+    private int trendMax => Math.Max(1, trendPoints.Count == 0 ? 1 : trendPoints.Max(x => x.Total));
+}

src/TaxBaik.Web.Client/Components/Admin/Pages/Faqs/FaqEdit.razor

@@ -9,14 +9,10 @@
 
 <PageTitle>@(Id.HasValue ? "FAQ 수정" : "FAQ 등록")</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">홈페이지</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "FAQ 수정" : "FAQ 등록")</MudText>
-    </div>
+<AdminPageHeader Title="@(Id.HasValue ? "FAQ 수정" : "FAQ 등록")" Eyebrow="홈페이지">
     <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/faqs"
                StartIcon="@Icons.Material.Filled.ArrowBack">목록으로</MudButton>
-</section>
+</AdminPageHeader>
 
 <AdminEditorPanel Loading="@isLoading" SkeletonContent="@FaqSkeleton">
     <MudPaper Class="admin-surface" Elevation="0" Style="max-width:720px;">

src/TaxBaik.Web.Client/Components/Admin/Pages/Faqs/FaqList.razor

@@ -10,23 +10,20 @@
 
 <PageTitle>FAQ 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">홈페이지</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">FAQ 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">홈페이지 자주 묻는 질문을 등록하고 순서를 관리합니다.</MudText>
-    </div>
+<AdminPageHeader Title="FAQ 관리" Eyebrow="홈페이지" Subtitle="홈페이지 자주 묻는 질문을 등록하고 순서를 관리합니다.">
     <MudButton Variant="Variant.Filled" Color="Color.Primary"
                StartIcon="@Icons.Material.Filled.Add"
                Href="/taxbaik/admin/faqs/create">
         FAQ 등록
     </MudButton>
-</section>
+</AdminPageHeader>
 
-<div class="d-flex pa-4 gap-4 align-center">
+<AdminSearchBar>
+    <SearchContent>
         <MudTextField @bind-Value="searchQuery" Placeholder="질문 또는 답변 검색..." Adornment="Adornment.Start" 
                       AdornmentIcon="@Icons.Material.Filled.Search" IconSize="Size.Medium" Class="flex-grow-1" Immediate="true" Clearable="true" />
-</div>
+    </SearchContent>
+</AdminSearchBar>
 
 <AdminDataPanel Loading="@(faqs is null)" SkeletonContent="@FaqListSkeleton">
     @if (faqs is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/Inquiries/InquiryDetail.razor

@@ -9,13 +9,7 @@
 
 <PageTitle>문의 상세</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Inquiry Details</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">문의 상세</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">문의 정보를 확인하고 처리 상태를 관리합니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="문의 상세" Eyebrow="Inquiry Details" Subtitle="문의 정보를 확인하고 처리 상태를 관리합니다." />
 
 @if (inquiry != null)
 {

src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor

@@ -9,13 +9,7 @@
 
 <PageTitle>수익 추적 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">수익 추적 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">초기 렌더 진단용 최소 화면입니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="수익 추적 관리" Eyebrow="CRM & 세무관리" Subtitle="청구 기록과 수익 흐름을 확인합니다." />
 
 <AdminDataPanel Loading="@(revenues is null)" SkeletonContent="@RevenueSkeleton">
     @if (revenues is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/SeasonSimulator.razor

@@ -6,13 +6,7 @@
 
 <PageTitle>시즌 시뮬레이터</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Season Preview</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">시즌 시뮬레이터</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">날짜를 선택해 홈페이지 시즌 화면이 어떻게 보이는지 미리 확인합니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="시즌 시뮬레이터" Eyebrow="Season Preview" Subtitle="날짜를 선택해 홈페이지 시즌 화면이 어떻게 보이는지 미리 확인합니다." />
 
 <MudGrid>
     <MudItem xs="12" md="4">

src/TaxBaik.Web.Client/Components/Admin/Pages/Settings/SiteSettings.razor

@@ -9,19 +9,11 @@
 
 <PageTitle>설정</PageTitle>
 
-<MudContainer MaxWidth="MaxWidth.Large" Class="pa-6">
-    <section class="admin-page-hero">
-        <div>
-            <MudText Typo="Typo.caption" Class="admin-eyebrow">System</MudText>
-            <MudText Typo="Typo.h4" Class="admin-page-title">설정</MudText>
-            <MudText Typo="Typo.body2" Class="admin-page-subtitle">공개 사이트 연락처와 관리자 계정 보안을 관리합니다.</MudText>
-        </div>
-    </section>
-</MudContainer>
+<AdminPageHeader Title="설정" Eyebrow="System" Subtitle="공개 사이트 연락처와 관리자 계정 보안을 관리합니다." />
 
 <MudGrid>
     <MudItem xs="12" md="7">
-        <MudPaper Class="admin-surface" Elevation="0">
+        <AdminEditorPanel Loading="@isLoadingSettings">
             <div class="admin-section-header compact">
                 <div>
                     <MudText Typo="Typo.h6">사이트 정보</MudText>
@@ -45,11 +37,11 @@
                     StartIcon="@Icons.Material.Filled.Save"
                     @onclick="SaveSettings">사이트 정보 저장</MudButton>
             </MudForm>
-        </MudPaper>
+        </AdminEditorPanel>
     </MudItem>
 
     <MudItem xs="12" md="5">
-        <MudPaper Class="admin-surface admin-account-card" Elevation="0">
+        <AdminEditorPanel Loading="@isLoadingSettings">
             <div class="admin-section-header compact">
                 <div>
                     <MudText Typo="Typo.h6">계정 관리</MudText>
@@ -74,7 +66,7 @@
                     @(isChangingPassword ? "변경 중..." : "비밀번호 변경")
                 </MudButton>
             </MudForm>
-        </MudPaper>
+        </AdminEditorPanel>
     </MudItem>
 </MudGrid>
 

src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor

@@ -11,16 +11,11 @@
 
 <PageTitle>신고 일정</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">신고 일정</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객별 마감일과 처리 상태를 한 화면에서 관리합니다.</MudText>
-    </div>
+<AdminPageHeader Title="신고 일정" Eyebrow="CRM & 세무관리" Subtitle="고객별 마감일과 처리 상태를 한 화면에서 관리합니다.">
     <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="PrepareCreate" StartIcon="@Icons.Material.Filled.Add" id="btn-add-schedule">
         새 일정 추가
     </MudButton>
-</section>
+</AdminPageHeader>
 
 <AdminDataPanel Loading="@(schedules is null)" SkeletonContent="@ScheduleSkeleton">
 @if (schedules is null)

src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilings/TaxFilingList.razor

@@ -10,18 +10,13 @@
 
 <PageTitle>신고 일정 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">Tax Schedule</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">신고 일정</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객별 세금 신고 마감일을 관리하고 완료 처리합니다.</MudText>
-    </div>
+<AdminPageHeader Title="신고 일정" Eyebrow="Tax Schedule" Subtitle="고객별 세금 신고 마감일을 관리하고 완료 처리합니다.">
     <MudButton Variant="Variant.Filled" Color="Color.Primary"
                OnClick="@(() => showAddForm = !showAddForm)"
                StartIcon="@Icons.Material.Filled.Add">
         일정 추가
     </MudButton>
-</section>
+</AdminPageHeader>
 
 @if (showAddForm)
 {

src/TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor

@@ -11,16 +11,11 @@
 
 <PageTitle>세무 프로필</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">세무 프로필</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객별 세무 프로필, 신고 일정, 위험도 추적</MudText>
-    </div>
+<AdminPageHeader Title="세무 프로필" Eyebrow="CRM & 세무관리" Subtitle="고객별 세무 프로필, 신고 일정, 위험도 추적">
     <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="PrepareCreate" StartIcon="@Icons.Material.Filled.Add" id="btn-add-profile">
         새 프로필 추가
     </MudButton>
-</section>
+</AdminPageHeader>
 
 <AdminDataPanel Loading="@(profiles == null)" SkeletonContent="@ProfileSkeleton">
 @if (profiles == null)

src/TaxBaik.Web.Client/Components/Admin/Services/AdminDashboardClient.cs

@@ -15,7 +15,7 @@ public interface IAdminDashboardClient
     Task<AdminDashboardSummary> GetSummaryAsync(CancellationToken ct = default);
     Task<IEnumerable<TaxFiling>> GetUpcomingFilingsAsync(int days = 30, CancellationToken ct = default);
     Task<IEnumerable<Inquiry>> GetRecentInquiriesAsync(int limit = 10, CancellationToken ct = default);
-    Task<object> GetMonthlyStatsAsync(string? month = null, CancellationToken ct = default);
+    Task<MonthlyStatsDto> GetMonthlyStatsAsync(string? month = null, CancellationToken ct = default);
 }
 
 public class AdminDashboardClient : IAdminDashboardClient
@@ -87,7 +87,7 @@ public class AdminDashboardClient : IAdminDashboardClient
         }
     }
 
-    public async Task<object> GetMonthlyStatsAsync(string? month = null, CancellationToken ct = default)
+    public async Task<MonthlyStatsDto> GetMonthlyStatsAsync(string? month = null, CancellationToken ct = default)
     {
         try
         {
@@ -96,8 +96,8 @@ public class AdminDashboardClient : IAdminDashboardClient
             if (!string.IsNullOrEmpty(month))
                 url += $"?month={month}";
 
-            var result = await _http.GetFromJsonAsync<object>(url, cancellationToken: ct);
-            return result ?? new();
+            var result = await _http.GetFromJsonAsync<MonthlyStatsDto>(url, cancellationToken: ct);
+            return result ?? new MonthlyStatsDto();
         }
         catch (HttpRequestException ex)
         {
@@ -107,6 +107,16 @@ public class AdminDashboardClient : IAdminDashboardClient
     }
 }
 
+public sealed class MonthlyStatsDto
+{
+    public string Month { get; set; } = string.Empty;
+    public int TotalInquiries { get; set; }
+    public int ConsultingCount { get; set; }
+    public int CompletedCount { get; set; }
+    public int NewCount { get; set; }
+    public double CompletionRate { get; set; }
+}
+
 /// <summary>
 /// API Response wrapper
 /// </summary>

src/TaxBaik.Web.Client/Components/Admin/Shared/AdminCrudPageShell.razor

@@ -1,7 +1,13 @@
 <AdminPageHeader Title="@Title" Eyebrow="@Eyebrow" Subtitle="@Subtitle">
+    <MudStack Row="true" AlignItems="AlignItems.Center" Justify="Justify.FlexEnd" Spacing="1">
+        @if (Actions is not null)
+        {
+            @Actions
+        }
         <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.Close" @onclick="OnCancel">
             @CancelText
         </MudButton>
+    </MudStack>
 </AdminPageHeader>
 
 <AdminEditorPanel Loading="@Loading" SkeletonContent="@SkeletonContent">
@@ -24,6 +30,9 @@
     [Parameter]
     public string CancelText { get; set; } = "취소";
 
+    [Parameter]
+    public RenderFragment? Actions { get; set; }
+
     [Parameter]
     public bool Loading { get; set; }
 

src/TaxBaik.Web.Client/Components/Admin/Shared/AdminNavigationModel.cs

@@ -0,0 +1,45 @@
+using MudBlazor;
+
+namespace TaxBaik.Web.Client.Components.Admin.Shared;
+
+public sealed record AdminNavigationItem(
+    string Label,
+    string Href,
+    string Icon,
+    string? Badge = null,
+    bool IsExact = false,
+    IReadOnlyList<string>? AllowedRoles = null);
+
+public sealed record AdminNavigationSection(
+    string Label,
+    IReadOnlyList<AdminNavigationItem> Items);
+
+public static class AdminNavigationCatalog
+{
+    public static IReadOnlyList<AdminNavigationSection> Sections { get; } =
+    [
+        new("개요", [
+            new("대시보드", "/taxbaik/admin/dashboard", Icons.Material.Filled.Dashboard, IsExact: true),
+        ]),
+        new("CRM & 세무관리", [
+            new("세무 프로필", "/taxbaik/admin/tax-profiles", Icons.Material.Filled.Badge, AllowedRoles: ["Admin", "Manager"]),
+            new("신고 일정", "/taxbaik/admin/tax-filing-schedules", Icons.Material.Filled.EventNote, AllowedRoles: ["Admin", "Manager"]),
+            new("계약 관리", "/taxbaik/admin/contracts", Icons.Material.Filled.Description, AllowedRoles: ["Admin", "Manager"]),
+            new("상담 활동", "/taxbaik/admin/consulting-activities", Icons.Material.Filled.SupportAgent, AllowedRoles: ["Admin", "Manager"]),
+            new("수익 추적", "/taxbaik/admin/revenue-trackings", Icons.Material.Filled.Payments, AllowedRoles: ["Admin"]),
+        ]),
+        new("고객 관리", [
+            new("고객 카드", "/taxbaik/admin/clients", Icons.Material.Filled.Groups, AllowedRoles: ["Admin", "Manager", "Staff"]),
+            new("세무신고", "/taxbaik/admin/tax-filings", Icons.Material.Filled.Assignment, AllowedRoles: ["Admin", "Manager", "Staff"]),
+        ]),
+        new("홈페이지", [
+            new("공지사항", "/taxbaik/admin/announcements", Icons.Material.Filled.Campaign, AllowedRoles: ["Admin", "ContentManager"]),
+            new("FAQ 관리", "/taxbaik/admin/faqs", Icons.Material.Filled.HelpOutline, AllowedRoles: ["Admin", "ContentManager"]),
+            new("블로그 관리", "/taxbaik/admin/blog", Icons.Material.Filled.Article, AllowedRoles: ["Admin", "ContentManager"]),
+            new("시즌 시뮬레이터", "/taxbaik/admin/season-simulator", Icons.Material.Filled.CalendarMonth, AllowedRoles: ["Admin", "ContentManager"]),
+            new("문의 관리", "/taxbaik/admin/inquiries", Icons.Material.Filled.Inbox, AllowedRoles: ["Admin", "Manager", "Staff"]),
+            new("설정", "/taxbaik/admin/settings", Icons.Material.Filled.Settings, AllowedRoles: ["Admin"]),
+            new("공통관리", "/taxbaik/admin/common-codes", Icons.Material.Filled.Apps, AllowedRoles: ["Admin"]),
+        ]),
+    ];
+}

src/TaxBaik.Web.Client/Components/Admin/Shared/AdminSearchBar.razor

@@ -0,0 +1,21 @@
+<MudPaper Class="admin-surface admin-search-bar" Elevation="0">
+    <MudStack Row="true" AlignItems="AlignItems.Center" Spacing="2" Class="admin-search-bar-inner">
+        <div class="admin-search-field">
+            @SearchContent
+        </div>
+        @if (Actions is not null)
+        {
+            <div class="admin-search-actions">
+                @Actions
+            </div>
+        }
+    </MudStack>
+</MudPaper>
+
+@code {
+    [Parameter]
+    public RenderFragment? SearchContent { get; set; }
+
+    [Parameter]
+    public RenderFragment? Actions { get; set; }
+}

src/TaxBaik.Web.Client/Components/Admin/Shared/AdminShell.razor

@@ -21,37 +21,7 @@
     <div class="admin-body">
         @if (drawerOpen)
         {
-            <aside class="admin-drawer">
-                <div class="admin-drawer-brand">
-                    <div class="admin-brand-mark">T</div>
-                    <div>
-                        <div class="admin-drawer-title">TaxBaik</div>
-                        <div class="admin-drawer-subtitle">세무 운영 콘솔</div>
-                    </div>
-                </div>
-                <nav class="admin-nav">
-                    <MudNavMenu Dense="true">
-                        <MudNavLink Href="/taxbaik/admin/dashboard" Match="NavLinkMatch.All">대시보드</MudNavLink>
-                        <MudText Typo="Typo.caption" Class="admin-nav-group">CRM & 세무관리</MudText>
-                        <MudNavLink Href="/taxbaik/admin/tax-profiles">세무 프로필</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/tax-filing-schedules">신고 일정</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/contracts">계약 관리</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/consulting-activities">상담 활동</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/revenue-trackings">수익 추적</MudNavLink>
-                        <MudText Typo="Typo.caption" Class="admin-nav-group">고객 관리</MudText>
-                        <MudNavLink Href="/taxbaik/admin/clients">고객 카드</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/tax-filings">세무신고</MudNavLink>
-                        <MudText Typo="Typo.caption" Class="admin-nav-group">홈페이지</MudText>
-                        <MudNavLink Href="/taxbaik/admin/announcements">공지사항</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/faqs">FAQ 관리</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/blog">블로그 관리</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/season-simulator">시즌 시뮬레이터</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/inquiries">문의 관리</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/settings">설정</MudNavLink>
-                        <MudNavLink Href="/taxbaik/admin/common-codes">공통관리</MudNavLink>
-                    </MudNavMenu>
-                </nav>
-            </aside>
+            <AdminSidebar />
         }
 
         <main class="admin-main">
@@ -67,7 +37,6 @@
     public RenderFragment? ChildContent { get; set; }
 
     private bool drawerOpen = true;
-    private bool firstRenderCompleted;
 
     protected override void OnInitialized()
     {
@@ -83,14 +52,6 @@
         drawerOpen = !drawerOpen;
     }
 
-    protected override async Task OnAfterRenderAsync(bool firstRender)
-    {
-        if (firstRender && !firstRenderCompleted)
-        {
-            firstRenderCompleted = true;
-        }
-    }
-
     public void Dispose()
     {
         Navigation.LocationChanged -= OnLocationChanged;

src/TaxBaik.Web.Client/Components/Admin/Shared/AdminSidebar.razor

@@ -0,0 +1,62 @@
+@using Microsoft.AspNetCore.Components.Authorization
+@using TaxBaik.Web.Client.Components.Admin.Shared
+@inject AuthenticationStateProvider AuthenticationStateProvider
+<aside class="admin-drawer">
+    <div class="admin-drawer-brand">
+        <div class="admin-brand-mark">T</div>
+        <div>
+            <div class="admin-drawer-title">TaxBaik</div>
+            <div class="admin-drawer-subtitle">세무 운영 콘솔</div>
+        </div>
+    </div>
+
+    <nav class="admin-nav" aria-label="관리자 메뉴">
+        <MudNavMenu Dense="true">
+            @foreach (var section in visibleSections)
+            {
+                <MudText Typo="Typo.caption" Class="admin-nav-group">@section.Label</MudText>
+                @foreach (var item in section.Items)
+                {
+                    <MudNavLink Href="@item.Href" Match="@(item.IsExact ? NavLinkMatch.All : NavLinkMatch.Prefix)">
+                        <MudStack Row="true" AlignItems="AlignItems.Center" Spacing="1">
+                            <MudIcon Icon="@item.Icon" Size="Size.Small" />
+                            <span>@item.Label</span>
+                            @if (!string.IsNullOrWhiteSpace(item.Badge))
+                            {
+                                <MudChip T="string" Size="Size.Small" Class="admin-nav-badge">@item.Badge</MudChip>
+                            }
+                        </MudStack>
+                    </MudNavLink>
+                }
+            }
+        </MudNavMenu>
+    </nav>
+
+    <div class="admin-drawer-footer">
+        <div class="admin-footer-item">
+            <MudIcon Icon="@Icons.Material.Filled.OpenInNew" Size="Size.Small" />
+            <MudLink Href="/taxbaik" Target="_blank" Underline="Underline.None">공개 사이트</MudLink>
+        </div>
+        <div class="admin-footer-item">
+            <MudIcon Icon="@Icons.Material.Filled.Logout" Size="Size.Small" />
+            <MudLink Href="/taxbaik/admin/logout" Underline="Underline.None">로그아웃</MudLink>
+        </div>
+    </div>
+</aside>
+
+@code {
+    private IReadOnlyList<AdminNavigationSection> visibleSections = [];
+
+    protected override async Task OnInitializedAsync()
+    {
+        var authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
+        var user = authState.User;
+        visibleSections = AdminNavigationCatalog.Sections
+            .Select(section => section with
+            {
+                Items = section.Items.Where(item => item.AllowedRoles is null || item.AllowedRoles.Count == 0 || item.AllowedRoles.Any(user.IsInRole)).ToList()
+            })
+            .Where(section => section.Items.Count > 0)
+            .ToList();
+    }
+}

src/TaxBaik.Web/Endpoints/Admin/ValidationEndpoints.cs

@@ -18,7 +18,7 @@ public class ValidateSitemapEndpoint : EndpointWithoutRequest
     public override void Configure()
     {
         Get("/api/admin/validate/sitemap");
-        Roles("admin");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(CancellationToken ct)
@@ -40,7 +40,7 @@ public class ValidateRssEndpoint : EndpointWithoutRequest
     public override void Configure()
     {
         Get("/api/admin/validate/rss");
-        Roles("admin");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(CancellationToken ct)
@@ -62,7 +62,7 @@ public class ValidateConsistencyEndpoint : EndpointWithoutRequest
     public override void Configure()
     {
         Get("/api/admin/validate/consistency");
-        Roles("admin");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(CancellationToken ct)

src/TaxBaik.Web/Endpoints/AdminDashboard/GetMonthlyStatsEndpoint.cs

@@ -15,7 +15,7 @@ public class GetMonthlyStatsEndpoint : Endpoint<MonthlyStatsQuery, MonthlyStatsR
     public override void Configure()
     {
         Get("/api/admin-dashboard/monthly-stats");
-        Policies("Bearer");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(MonthlyStatsQuery request, CancellationToken ct)

src/TaxBaik.Web/Endpoints/AdminDashboard/GetRecentInquiriesEndpoint.cs

@@ -15,7 +15,7 @@ public class GetRecentInquiriesEndpoint : Endpoint<RecentInquiriesQuery, RecentI
     public override void Configure()
     {
         Get("/api/admin-dashboard/recent-inquiries");
-        Policies("Bearer");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(RecentInquiriesQuery request, CancellationToken ct)

src/TaxBaik.Web/Endpoints/AdminDashboard/GetSummaryEndpoint.cs

@@ -15,7 +15,7 @@ public class GetSummaryEndpoint : EndpointWithoutRequest<AdminDashboardSummaryRe
     public override void Configure()
     {
         Get("/api/admin-dashboard/summary");
-        Policies("Bearer");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(CancellationToken ct)

src/TaxBaik.Web/Endpoints/AdminDashboard/GetUpcomingFilingsEndpoint.cs

@@ -15,7 +15,7 @@ public class GetUpcomingFilingsEndpoint : Endpoint<UpcomingFilingsQuery, Upcomin
     public override void Configure()
     {
         Get("/api/admin-dashboard/upcoming-filings");
-        Policies("Bearer");
+        Policies("AdminOnly");
     }
 
     public override async Task HandleAsync(UpcomingFilingsQuery request, CancellationToken ct)

src/TaxBaik.Web/Program.cs

@@ -69,6 +69,10 @@ builder.Services.AddAuthorization(opts =>
     opts.AddPolicy("Bearer", new Microsoft.AspNetCore.Authorization.AuthorizationPolicyBuilder(JwtBearerDefaults.AuthenticationScheme)
         .RequireAuthenticatedUser()
         .Build());
+    opts.AddPolicy("AdminOnly", new Microsoft.AspNetCore.Authorization.AuthorizationPolicyBuilder(JwtBearerDefaults.AuthenticationScheme)
+        .RequireAuthenticatedUser()
+        .RequireRole("Admin")
+        .Build());
 });
 builder.Services.AddProblemDetails();
 builder.Services.AddHealthChecks();

src/TaxBaik.Web/Services/AuthService.cs

@@ -173,7 +173,8 @@ public class AuthService
         {
             new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
             new Claim(ClaimTypes.Name, user.Username),
-            new Claim("username", user.Username)
+            new Claim("username", user.Username),
+            new Claim(ClaimTypes.Role, "Admin")
         };
 
         var accessToken = new JwtSecurityToken(

src/TaxBaik.Web/wwwroot/css/admin.css

@@ -497,6 +497,9 @@ textarea:focus-visible {
   border-right: 1px solid var(--border-color);
   display: flex;
   flex-direction: column;
+  position: sticky;
+  top: 0;
+  height: 100vh;
 }
 
 .admin-drawer-brand {
@@ -539,6 +542,23 @@ textarea:focus-visible {
   font-size: 0.78rem;
 }
 
+.admin-nav .mud-nav-link .mud-stack {
+  width: 100%;
+  gap: 8px;
+}
+
+.admin-nav-badge {
+  margin-left: auto;
+  height: 18px;
+  font-size: 0.65rem;
+}
+
+.admin-body {
+  display: flex;
+  min-height: 0;
+  flex: 1;
+}
+
 .admin-nav .mud-nav-group-header {
   min-height: 32px;
   font-size: 0.78rem;
@@ -618,6 +638,130 @@ textarea:focus-visible {
   width: 100%;
 }
 
+.admin-dashboard-grid {
+  margin-top: 0;
+}
+
+.admin-stats-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 12px;
+}
+
+.admin-stat {
+  padding: 14px;
+  border: 1px solid var(--border-color-light);
+  border-radius: var(--radius-lg);
+  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
+}
+
+.admin-stat-label {
+  display: block;
+  margin-bottom: 4px;
+  color: var(--text-secondary);
+  font-size: 0.75rem;
+}
+
+.admin-stat-value {
+  font-size: 1.25rem;
+  font-weight: 700;
+  color: var(--text-primary);
+}
+
+.admin-chart {
+  margin-top: 14px;
+  padding: 14px;
+  border: 1px solid var(--border-color-light);
+  border-radius: var(--radius-lg);
+  background: #fff;
+}
+
+.admin-chart-header {
+  display: flex;
+  justify-content: space-between;
+  gap: 12px;
+  margin-bottom: 12px;
+  font-size: 0.8rem;
+  color: var(--text-secondary);
+}
+
+.admin-chart-bars {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.admin-chart-row {
+  display: grid;
+  grid-template-columns: 56px 1fr 28px;
+  gap: 10px;
+  align-items: center;
+  font-size: 0.75rem;
+}
+
+.admin-chart-track {
+  height: 10px;
+  background: var(--bg-tertiary);
+  border-radius: var(--radius-full);
+  overflow: hidden;
+}
+
+.admin-chart-fill {
+  height: 100%;
+  border-radius: inherit;
+}
+
+.admin-quick-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 12px;
+}
+
+.admin-quick-card {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px;
+  border: 1px solid var(--border-color-light);
+  border-radius: var(--radius-lg);
+  cursor: pointer;
+  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
+  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
+}
+
+.admin-quick-card:hover {
+  transform: translateY(-2px);
+  box-shadow: var(--shadow-md);
+  border-color: var(--border-color-strong);
+}
+
+.admin-quick-card .mud-icon-root {
+  color: var(--primary-color);
+}
+
+.admin-note-list {
+  display: grid;
+  gap: 10px;
+  color: var(--text-secondary);
+  font-size: 0.8rem;
+}
+
+.admin-note-list div {
+  padding-left: 14px;
+  position: relative;
+}
+
+.admin-note-list div::before {
+  content: '';
+  position: absolute;
+  left: 0;
+  top: 0.55em;
+  width: 6px;
+  height: 6px;
+  border-radius: 9999px;
+  background: var(--primary-color);
+}
+
 /* ============================================================================
    Dashboard Page Styles
    ============================================================================ */