diff --git a/docker-compose.yml b/docker-compose.yml
index d2ec7dc..d327350 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,5 +7,5 @@ services:
     ports:
       - "3005:80"
     volumes:
-      # Đường dẫn đã được chuẩn hóa theo tên dự án mới
-      - /opt/exercise-app/data.json:/usr/share/nginx/html/data.json
\ No newline at end of file
+      # Nối toàn bộ thư mục data vào trong nginx
+      - /opt/exercise-app/data:/usr/share/nginx/html/data
\ No newline at end of file
diff --git a/public/data.json b/public/data/data.json
similarity index 75%
rename from public/data.json
rename to public/data/data.json
index ce0c235..9d556c9 100644
--- a/public/data.json
+++ b/public/data/data.json
@@ -19,5 +19,14 @@
     "category": "Core",
     "level": "Nâng cao",
     "youtube_id": "3p8EBPvz2ZI"
+  },
+  
+  {
+    "id": "4",
+    "youtube_id": "ovUtlbbKb_4",
+    "title": "30 Minute Beginner Mobility Workout",
+    "category": "Mobility",
+    "level": "Vừa"
   }
+
 ]
diff --git a/src/Admin.tsx b/src/Admin.tsx
new file mode 100644
index 0000000..06ffc42
--- /dev/null
+++ b/src/Admin.tsx
@@ -0,0 +1,194 @@
+import { useState } from 'react';
+
+interface VideoEntry {
+  uid: number; // ID nội bộ để quản lý danh sách
+  link: string;
+  id: string; // YouTube ID sau khi tách
+  title: string;
+  category: string;
+  customCategory: string;
+  level: string;
+}
+
+const CATEGORIES = ["Cardio", "Cơ Bụng", "Yoga", "HIIT", "Ngực", "Chân", "Toàn thân", "Khác"];
+const LEVELS = ["Dễ", "Vừa", "Khó"];
+
+export default function Admin() {
+  const [entries, setEntries] = useState<VideoEntry[]>([
+    { uid: Date.now(), link: '', id: '', title: '', category: 'Cardio', customCategory: '', level: 'Vừa' }
+  ]);
+  const [jsonOutput, setJsonOutput] = useState<string>('');
+  const [copied, setCopied] = useState(false);
+
+  // Hàm tự động tách ID Youtube từ Link
+  const extractYouTubeID = (url: string) => {
+    const regExp = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/i;
+    const match = url.match(regExp);
+    return match ? match[1] : '';
+  };
+
+  const handleUpdate = (index: number, field: keyof VideoEntry, value: string) => {
+    const newEntries = [...entries];
+    newEntries[index][field] = value as never;
+
+    // Nếu đang dán link, tự động tách ID luôn
+    if (field === 'link') {
+      newEntries[index].id = extractYouTubeID(value);
+    }
+    setEntries(newEntries);
+  };
+
+  const handleAddRow = () => {
+    setEntries([
+      ...entries,
+      { uid: Date.now(), link: '', id: '', title: '', category: 'Cardio', customCategory: '', level: 'Vừa' }
+    ]);
+  };
+
+  const handleRemoveRow = (index: number) => {
+    if (entries.length === 1) return; // Giữ lại ít nhất 1 dòng
+    const newEntries = [...entries];
+    newEntries.splice(index, 1);
+    setEntries(newEntries);
+  };
+
+  const handleGenerate = () => {
+    // Lọc bỏ những dòng chưa có ID
+    const validEntries = entries.filter(e => e.id.trim() !== '');
+    
+    const finalData = validEntries.map((e, index) => ({
+      id: `vid_${Date.now()}_${index}`, // Sinh ra ID ngẫu nhiên cho video
+      youtube_id: e.id,                 // Gán mã Youtube ID vào đúng trường youtube_id
+      title: e.title.trim() || "Chưa có tiêu đề",
+      category: e.category === 'Khác' ? e.customCategory.trim() : e.category,
+      level: e.level
+    }));
+
+    setJsonOutput(JSON.stringify(finalData, null, 2));
+    setCopied(false);
+  };
+
+  const handleCopy = () => {
+    if (!jsonOutput) return;
+    navigator.clipboard.writeText(jsonOutput);
+    setCopied(true);
+    setTimeout(() => setCopied(false), 2000);
+  };
+
+  return (
+    <div className="max-w-4xl mx-auto p-4 md:p-8 bg-gray-50 min-h-screen">
+      <div className="flex justify-between items-center mb-6">
+        <h1 className="text-2xl font-bold text-gray-800">🛠️ Trạm Tạo Dữ Liệu</h1>
+        <button 
+          onClick={() => window.location.href = '/'}
+          className="text-sm text-blue-600 hover:underline"
+        >
+          &larr; Về App
+        </button>
+      </div>
+
+      <div className="space-y-4 mb-6">
+        {entries.map((entry, index) => (
+          <div key={entry.uid} className="bg-white p-4 rounded-xl shadow-sm border border-gray-200 relative">
+            <button 
+              onClick={() => handleRemoveRow(index)}
+              className="absolute top-2 right-2 text-red-500 hover:bg-red-50 p-1 rounded-md"
+              title="Xóa dòng này"
+            >
+              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M6 18L18 6M6 6l12 12"></path></svg>
+            </button>
+
+            <div className="grid grid-cols-1 md:grid-cols-12 gap-4">
+              {/* Cột Link */}
+              <div className="md:col-span-5">
+                <label className="block text-xs font-medium text-gray-500 mb-1">Link YouTube</label>
+                <input 
+                  type="text" 
+                  value={entry.link}
+                  onChange={(e) => handleUpdate(index, 'link', e.target.value)}
+                  placeholder="https://youtu.be/..." 
+                  className="w-full border border-gray-300 rounded-md p-2 text-sm focus:ring-2 focus:ring-blue-500 outline-none"
+                />
+                {entry.id && <p className="text-xs text-green-600 mt-1">ID: {entry.id}</p>}
+              </div>
+
+              {/* Cột Tiêu đề */}
+              <div className="md:col-span-3">
+                <label className="block text-xs font-medium text-gray-500 mb-1">Tiêu đề</label>
+                <input 
+                  type="text" 
+                  value={entry.title}
+                  onChange={(e) => handleUpdate(index, 'title', e.target.value)}
+                  placeholder="Vd: 10 Phút Đốt Mỡ" 
+                  className="w-full border border-gray-300 rounded-md p-2 text-sm focus:ring-2 focus:ring-blue-500 outline-none"
+                />
+              </div>
+
+              {/* Cột Phân loại */}
+              <div className="md:col-span-2">
+                <label className="block text-xs font-medium text-gray-500 mb-1">Danh mục</label>
+                <select 
+                  value={entry.category}
+                  onChange={(e) => handleUpdate(index, 'category', e.target.value)}
+                  className="w-full border border-gray-300 rounded-md p-2 text-sm bg-white"
+                >
+                  {CATEGORIES.map(cat => <option key={cat} value={cat}>{cat}</option>)}
+                </select>
+                {entry.category === 'Khác' && (
+                  <input 
+                    type="text" 
+                    value={entry.customCategory}
+                    onChange={(e) => handleUpdate(index, 'customCategory', e.target.value)}
+                    placeholder="Nhập tag..." 
+                    className="w-full border border-gray-300 rounded-md p-1 mt-2 text-sm"
+                  />
+                )}
+              </div>
+
+              {/* Cột Mức độ */}
+              <div className="md:col-span-2">
+                <label className="block text-xs font-medium text-gray-500 mb-1">Mức độ</label>
+                <select 
+                  value={entry.level}
+                  onChange={(e) => handleUpdate(index, 'level', e.target.value)}
+                  className="w-full border border-gray-300 rounded-md p-2 text-sm bg-white"
+                >
+                  {LEVELS.map(lvl => <option key={lvl} value={lvl}>{lvl}</option>)}
+                </select>
+              </div>
+            </div>
+          </div>
+        ))}
+      </div>
+
+      <div className="flex gap-3 mb-8">
+        <button 
+          onClick={handleAddRow}
+          className="px-4 py-2 bg-gray-200 text-gray-800 rounded-lg text-sm font-medium hover:bg-gray-300 transition"
+        >
+          + Thêm Video
+        </button>
+        <button 
+          onClick={handleGenerate}
+          className="px-6 py-2 bg-blue-600 text-white rounded-lg text-sm font-medium hover:bg-blue-700 transition"
+        >
+          Sinh mã JSON
+        </button>
+      </div>
+
+      {jsonOutput && (
+        <div className="bg-gray-800 rounded-xl p-4 relative">
+          <button 
+            onClick={handleCopy}
+            className={`absolute top-4 right-4 px-3 py-1 rounded text-xs font-medium transition ${copied ? 'bg-green-500 text-white' : 'bg-gray-600 text-gray-200 hover:bg-gray-500'}`}
+          >
+            {copied ? 'Đã Copy!' : 'Copy JSON'}
+          </button>
+          <pre className="text-green-400 text-sm overflow-x-auto pt-8">
+            <code>{jsonOutput}</code>
+          </pre>
+        </div>
+      )}
+    </div>
+  );
+}
\ No newline at end of file
diff --git a/src/App.tsx b/src/App.tsx
index 82748b4..4fc5873 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,4 +1,5 @@
 import { useState, useEffect, useMemo } from 'react';
+import Admin from './Admin'; // <-- THÊM DÒNG IMPORT NÀY
 
 // Định nghĩa kiểu dữ liệu cho Video bài tập
 interface ExerciseVideo {
@@ -9,15 +10,16 @@ interface ExerciseVideo {
   youtube_id: string;
 }
 
-function App() {
+// BƯỚC 1: Đổi tên App cũ của bạn thành MainApp
+function MainApp() {
   const [videos, setVideos] = useState<ExerciseVideo[]>([]);
   const [selectedVideo, setSelectedVideo] = useState<ExerciseVideo | null>(null);
   const [activeCategory, setActiveCategory] = useState<string>('All');
   const [loading, setLoading] = useState<boolean>(true);
 
-  // Lấy dữ liệu từ file data.json
+  // Lấy dữ liệu từ thư mục con /data/ và chống Cache
   useEffect(() => {
-    fetch('/data.json')
+    fetch('/data/data.json?t=' + new Date().getTime())
       .then((res) => res.json())
       .then((data: ExerciseVideo[]) => {
         setVideos(data);
@@ -140,4 +142,15 @@ function App() {
   );
 }
 
-export default App;
+// BƯỚC 2: Tạo App mới làm người gác cổng kiểm tra URL
+function App() {
+  const isAdmin = window.location.search.includes('admin=true');
+
+  if (isAdmin) {
+    return <Admin />;
+  }
+
+  return <MainApp />;
+}
+
+export default App;
\ No newline at end of file