diff --git a/docs/SPECIFICATION.md b/docs/SPECIFICATION.md
index 78a05e0..f0f2290 100644
--- a/docs/SPECIFICATION.md
+++ b/docs/SPECIFICATION.md
@@ -151,8 +151,8 @@ REST API認証用のAPIキーを管理するモデル。
 
 | 機能 | 説明 |
 |------|------|
-| ダッシュボード | 課題の統計情報、本日期限の課題、期限切れ課題、今週期限の課題を表示 |
-| 課題一覧 | フィルタ付き（未完了/完了済み/期限切れ）で課題を一覧表示 |
+| ダッシュボード | 課題の統計情報、本日期限の課題、期限切れ課題、今週期限の課題を表示。各統計カードをクリックすると対応するフィルタで課題一覧に遷移 |
+| 課題一覧 | フィルタ付き（未完了/今日が期限/今週が期限/完了済み/期限切れ）で課題を一覧表示 |
 | 課題登録 | タイトル、説明、教科、重要度、提出期限、通知設定を入力して新規登録 |
 | 課題編集 | 既存の課題情報を編集 |
 | 課題削除 | 課題を論理削除 |
diff --git a/internal/repository/assignment_repository.go b/internal/repository/assignment_repository.go
index 2092649..fb50d7b 100644
--- a/internal/repository/assignment_repository.go
+++ b/internal/repository/assignment_repository.go
@@ -148,11 +148,19 @@ func (r *AssignmentRepository) Search(userID uint, queryStr, priority, filter st
 	}
 
 	now := time.Now()
+	startOfDay := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
+	endOfDay := startOfDay.AddDate(0, 0, 1)
+	weekLater := startOfDay.AddDate(0, 0, 7)
+
 	switch filter {
 	case "completed":
 		dbQuery = dbQuery.Where("is_completed = ?", true)
 	case "overdue":
 		dbQuery = dbQuery.Where("is_completed = ? AND due_date < ?", false, now)
+	case "due_today":
+		dbQuery = dbQuery.Where("is_completed = ? AND due_date >= ? AND due_date < ?", false, startOfDay, endOfDay)
+	case "due_this_week":
+		dbQuery = dbQuery.Where("is_completed = ? AND due_date >= ? AND due_date < ?", false, startOfDay, weekLater)
 	default: // pending
 		dbQuery = dbQuery.Where("is_completed = ?", false)
 	}
@@ -195,12 +203,12 @@ type StatisticsFilter struct {
 }
 
 type AssignmentStatistics struct {
-	Total                  int64
-	Completed              int64
-	Pending                int64
-	Overdue                int64
-	CompletedOnTime        int64
-	OnTimeCompletionRate   float64
+	Total                int64
+	Completed            int64
+	Pending              int64
+	Overdue              int64
+	CompletedOnTime      int64
+	OnTimeCompletionRate float64
 }
 
 type SubjectStatistics struct {
@@ -217,11 +225,11 @@ func (r *AssignmentRepository) GetStatistics(userID uint, filter StatisticsFilte
 	now := time.Now()
 	stats := &AssignmentStatistics{}
 	baseQuery := r.db.Model(&models.Assignment{}).Where("user_id = ?", userID)
-	
+
 	if filter.Subject != "" {
 		baseQuery = baseQuery.Where("subject = ?", filter.Subject)
 	}
-	
+
 	if filter.From != nil {
 		baseQuery = baseQuery.Where("created_at >= ?", *filter.From)
 	}
@@ -338,4 +346,3 @@ func (r *AssignmentRepository) GetSubjectsByUserIDWithArchived(userID uint, incl
 	err := query.Distinct("subject").Pluck("subject", &subjects).Error
 	return subjects, err
 }
-
diff --git a/web/templates/assignments/index.html b/web/templates/assignments/index.html
index 0046334..87cd58d 100644
--- a/web/templates/assignments/index.html
+++ b/web/templates/assignments/index.html
@@ -18,19 +18,43 @@
 <!-- Tabs -->
 <ul class="nav nav-tabs border-0 mb-2" id="assignmentTabs">
     <li class="nav-item">
-        <a class="nav-link py-2 rounded-0 border-0 {{if eq .filter " pending"}}fw-bold border-bottom border-dark
-            border-3{{else}}text-muted{{end}}" href="/assignments?filter=pending&q={{.query}}&priority={{.priority}}"
-            style="{{if eq .filter " pending"}}color: black !important;{{end}}">未完了</a>
+        <a class="nav-link py-2 rounded-0 {{if eq .filter "pending"}}fw-bold border-bottom border-dark border-3
+            text-dark{{else}}border-0 text-muted{{end}}"
+            href="/assignments?filter=pending&q={{.query}}&priority={{.priority}}">
+            未完了
+        </a>
     </li>
+
     <li class="nav-item">
-        <a class="nav-link py-2 rounded-0 border-0 {{if eq .filter " completed"}}fw-bold border-bottom border-dark
-            border-3{{else}}text-muted{{end}}" href="/assignments?filter=completed&q={{.query}}&priority={{.priority}}"
-            style="{{if eq .filter " completed"}}color: black !important;{{end}}">完了済み</a>
+        <a class="nav-link py-2 rounded-0 {{if eq .filter "due_today"}}fw-bold border-bottom border-dark border-3
+            text-dark{{else}}border-0 text-muted{{end}}"
+            href="/assignments?filter=due_today&q={{.query}}&priority={{.priority}}">
+            今日が期限
+        </a>
     </li>
+
     <li class="nav-item">
-        <a class="nav-link py-2 rounded-0 border-0 {{if eq .filter " overdue"}}fw-bold border-bottom border-dark
-            border-3{{else}}text-muted{{end}}" href="/assignments?filter=overdue&q={{.query}}&priority={{.priority}}"
-            style="{{if eq .filter " overdue"}}color: black !important;{{end}}">期限切れ</a>
+        <a class="nav-link py-2 rounded-0 {{if eq .filter "due_this_week"}}fw-bold border-bottom border-dark border-3
+            text-dark{{else}}border-0 text-muted{{end}}"
+            href="/assignments?filter=due_this_week&q={{.query}}&priority={{.priority}}">
+            今週が期限
+        </a>
+    </li>
+
+    <li class="nav-item">
+        <a class="nav-link py-2 rounded-0 {{if eq .filter "completed"}}fw-bold border-bottom border-dark border-3
+            text-dark{{else}}border-0 text-muted{{end}}"
+            href="/assignments?filter=completed&q={{.query}}&priority={{.priority}}">
+            完了済み
+        </a>
+    </li>
+
+    <li class="nav-item">
+        <a class="nav-link py-2 rounded-0 {{if eq .filter "overdue"}}fw-bold border-bottom border-dark border-3
+            text-dark{{else}}border-0 text-muted{{end}}"
+            href="/assignments?filter=overdue&q={{.query}}&priority={{.priority}}">
+            期限切れ
+        </a>
     </li>
 </ul>
 <hr class="mt-0 mb-3 text-muted" style="opacity: 0.1;">
diff --git a/web/templates/assignments/statistics.html b/web/templates/assignments/statistics.html
index 1f3b705..b774e76 100644
--- a/web/templates/assignments/statistics.html
+++ b/web/templates/assignments/statistics.html
@@ -30,6 +30,20 @@
     .pagination-info {
         font-size: 0.875rem;
     }
+
+    .stats-table {
+        min-width: 700px;
+    }
+
+    .stats-table th,
+    .stats-table td {
+        white-space: nowrap;
+    }
+
+    .stats-table th:first-child,
+    .stats-table td:first-child {
+        min-width: 120px;
+    }
 </style>
 {{end}}
 
@@ -174,7 +188,7 @@
     </div>
     <div class="card-body p-0">
         <div class="table-responsive">
-            <table class="table table-hover mb-0">
+            <table class="table table-hover mb-0 stats-table">
                 <thead class="table-light">
                     <tr>
                         <th>科目</th>
@@ -206,7 +220,7 @@
     </div>
     <div class="card-body p-0">
         <div class="table-responsive">
-            <table class="table table-hover mb-0">
+            <table class="table table-hover mb-0 stats-table">
                 <thead class="table-light">
                     <tr>
                         <th>科目</th>
diff --git a/web/templates/pages/dashboard.html b/web/templates/pages/dashboard.html
index 2205925..ecbfa79 100644
--- a/web/templates/pages/dashboard.html
+++ b/web/templates/pages/dashboard.html
@@ -65,6 +65,16 @@
         font-size: 1.5rem;
         font-weight: bold;
     }
+
+    .dashboard-stat-card {
+        transition: transform 0.2s ease, box-shadow 0.2s ease;
+        cursor: pointer;
+    }
+
+    .dashboard-stat-card:hover {
+        transform: translateY(-4px);
+        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
+    }
 </style>
 {{end}}
 
@@ -83,56 +93,64 @@
 
 <div class="row g-4 mb-4">
     <div class="col-6 col-md-3">
-        <div class="card bg-primary text-white h-100">
-            <div class="card-body">
-                <div class="d-flex justify-content-between align-items-center">
-                    <div>
-                        <h6 class="text-white-50">未完了の課題</h6>
-                        <h2 class="mb-0">{{.stats.TotalPending}}</h2>
+        <a href="/assignments?filter=pending" class="text-decoration-none">
+            <div class="card bg-primary text-white h-100 dashboard-stat-card">
+                <div class="card-body">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            <h6 class="text-white-50">未完了の課題</h6>
+                            <h2 class="mb-0">{{.stats.TotalPending}}</h2>
+                        </div>
+                        <i class="bi bi-list-task display-4 opacity-50"></i>
                     </div>
-                    <i class="bi bi-list-task display-4 opacity-50"></i>
                 </div>
             </div>
-        </div>
+        </a>
     </div>
     <div class="col-6 col-md-3">
-        <div class="card bg-warning text-dark h-100">
-            <div class="card-body">
-                <div class="d-flex justify-content-between align-items-center">
-                    <div>
-                        <h6 class="text-dark-50">今日が期限</h6>
-                        <h2 class="mb-0">{{.stats.DueToday}}</h2>
+        <a href="/assignments?filter=due_today" class="text-decoration-none">
+            <div class="card bg-warning text-dark h-100 dashboard-stat-card">
+                <div class="card-body">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            <h6 class="text-dark-50">今日が期限</h6>
+                            <h2 class="mb-0">{{.stats.DueToday}}</h2>
+                        </div>
+                        <i class="bi bi-calendar-event display-4 opacity-50"></i>
                     </div>
-                    <i class="bi bi-calendar-event display-4 opacity-50"></i>
                 </div>
             </div>
-        </div>
+        </a>
     </div>
     <div class="col-6 col-md-3">
-        <div class="card bg-info text-white h-100">
-            <div class="card-body">
-                <div class="d-flex justify-content-between align-items-center">
-                    <div>
-                        <h6 class="text-white-50">今週が期限</h6>
-                        <h2 class="mb-0">{{.stats.DueThisWeek}}</h2>
+        <a href="/assignments?filter=due_this_week" class="text-decoration-none">
+            <div class="card bg-info text-white h-100 dashboard-stat-card">
+                <div class="card-body">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            <h6 class="text-white-50">今週が期限</h6>
+                            <h2 class="mb-0">{{.stats.DueThisWeek}}</h2>
+                        </div>
+                        <i class="bi bi-calendar-week display-4 opacity-50"></i>
                     </div>
-                    <i class="bi bi-calendar-week display-4 opacity-50"></i>
                 </div>
             </div>
-        </div>
+        </a>
     </div>
     <div class="col-6 col-md-3">
-        <div class="card bg-danger text-white h-100">
-            <div class="card-body">
-                <div class="d-flex justify-content-between align-items-center">
-                    <div>
-                        <h6 class="text-white-50">期限切れ</h6>
-                        <h2 class="mb-0">{{.stats.Overdue}}</h2>
+        <a href="/assignments?filter=overdue" class="text-decoration-none">
+            <div class="card bg-danger text-white h-100 dashboard-stat-card">
+                <div class="card-body">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            <h6 class="text-white-50">期限切れ</h6>
+                            <h2 class="mb-0">{{.stats.Overdue}}</h2>
+                        </div>
+                        <i class="bi bi-exclamation-triangle display-4 opacity-50"></i>
                     </div>
-                    <i class="bi bi-exclamation-triangle display-4 opacity-50"></i>
                 </div>
             </div>
-        </div>
+        </a>
     </div>
 </div>