diff --git a/lib/screens/wakatime_screen.dart b/lib/screens/wakatime_screen.dart
index 022263d..8a14c91 100644
--- a/lib/screens/wakatime_screen.dart
+++ b/lib/screens/wakatime_screen.dart
@@ -12,7 +12,8 @@ class WakatimeScreen extends StatefulWidget {
   State<WakatimeScreen> createState() => _WakatimeScreenState();
 }
 
-class _WakatimeScreenState extends State<WakatimeScreen> {
+class _WakatimeScreenState extends State<WakatimeScreen>
+    with SingleTickerProviderStateMixin {
   final WakatimeService _wakatimeService = WakatimeService();
   WakatimeSummary? _summary;
   bool _isLoading = false;
@@ -20,6 +21,9 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
   final TextEditingController _startDateController = TextEditingController();
   final TextEditingController _endDateController = TextEditingController();
   int? _touchedIndex;
+  String? _touchedChartType;
+  late AnimationController _animationController;
+  late Animation<double> _animation;
 
   // 预定义的颜色列表
   final List<Color> _colors = [
@@ -40,11 +44,22 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
   @override
   void initState() {
     super.initState();
-    // 设置默认日期为今天和昨天
+    _animationController = AnimationController(
+      duration: const Duration(milliseconds: 1500),
+      vsync: this,
+    );
+    _animation = CurvedAnimation(
+      parent: _animationController,
+      curve: Curves.easeInOut,
+    );
+    _animationController.forward();
+
+    // 设置默认日期为今天和一周前
     final now = DateTime.now();
     _startDateController.text =
-        _formatDate(now.subtract(const Duration(days: 1)));
+        _formatDate(now.subtract(const Duration(days: 7)));
     _endDateController.text = _formatDate(now);
+    _fetchData();
   }
 
   String _formatDate(DateTime date) {
@@ -81,6 +96,8 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
         _summary = summary;
         _isLoading = false;
       });
+      _animationController.reset();
+      _animationController.forward();
     } catch (e) {
       setState(() {
         _error = e.toString();
@@ -89,14 +106,16 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
     }
   }
 
-  Widget _buildLegend(List<dynamic> data, String Function(dynamic) getName) {
+  Widget _buildLegend(
+      List<dynamic> data, String Function(dynamic) getName, String chartType) {
     return Wrap(
       spacing: 16,
       runSpacing: 8,
       children: data.asMap().entries.map((entry) {
         final index = entry.key;
         final item = entry.value;
-        final isTouched = index == _touchedIndex;
+        final isTouched =
+            index == _touchedIndex && _touchedChartType == chartType;
         return Row(
           mainAxisSize: MainAxisSize.min,
           children: [
@@ -107,7 +126,7 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
             ),
             const SizedBox(width: 8),
             Text(
-              '${getName(item)}${isTouched ? ' (${_formatDuration(item.totalSeconds)})' : ''}',
+              '${getName(item)}${isTouched ? ' (${_formatDuration(item.totalSeconds.toInt())})' : ''}',
               style: TextStyle(
                 fontSize: 12,
                 fontWeight: isTouched ? FontWeight.bold : FontWeight.normal,
@@ -119,8 +138,8 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
     );
   }
 
-  Widget _buildPieChart(
-      List<dynamic> data, String title, String Function(dynamic) getName) {
+  Widget _buildPieChart(List<dynamic> data, String title,
+      String Function(dynamic) getName, String chartType) {
     return Column(
       children: [
         Text(
@@ -128,7 +147,7 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
           style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
         ),
         const SizedBox(height: 16),
-        _buildLegend(data, getName),
+        _buildLegend(data, getName, chartType),
         const SizedBox(height: 16),
         SizedBox(
           height: 300,
@@ -141,17 +160,20 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
                         pieTouchResponse == null ||
                         pieTouchResponse.touchedSection == null) {
                       _touchedIndex = null;
+                      _touchedChartType = null;
                       return;
                     }
                     _touchedIndex =
                         pieTouchResponse.touchedSection!.touchedSectionIndex;
+                    _touchedChartType = chartType;
                   });
                 },
               ),
               sections: data.asMap().entries.map((entry) {
                 final index = entry.key;
                 final item = entry.value;
-                final isTouched = index == _touchedIndex;
+                final isTouched =
+                    index == _touchedIndex && _touchedChartType == chartType;
                 final percent = item.percent;
                 return PieChartSectionData(
                   value: item.totalSeconds.toDouble(),
@@ -241,6 +263,71 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
     );
   }
 
+  Widget _buildTotalTime() {
+    if (_summary == null) return const SizedBox.shrink();
+
+    return FadeTransition(
+      opacity: _animation,
+      child: SlideTransition(
+        position: Tween<Offset>(
+          begin: const Offset(0, 0.3),
+          end: Offset.zero,
+        ).animate(_animation),
+        child: Container(
+          width: double.infinity,
+          padding: const EdgeInsets.all(24),
+          decoration: BoxDecoration(
+            gradient: LinearGradient(
+              colors: [
+                Theme.of(context).primaryColor,
+                Theme.of(context).primaryColor.withOpacity(0.8),
+              ],
+              begin: Alignment.topLeft,
+              end: Alignment.bottomRight,
+            ),
+            borderRadius: BorderRadius.circular(16),
+            boxShadow: [
+              BoxShadow(
+                color: Theme.of(context).primaryColor.withOpacity(0.3),
+                blurRadius: 10,
+                offset: const Offset(0, 5),
+              ),
+            ],
+          ),
+          child: Column(
+            children: [
+              const Text(
+                '总编码时间',
+                style: TextStyle(
+                  fontSize: 20,
+                  fontWeight: FontWeight.bold,
+                  color: Colors.white,
+                ),
+              ),
+              const SizedBox(height: 16),
+              Text(
+                _summary!.cumulativeTotal.text,
+                style: const TextStyle(
+                  fontSize: 32,
+                  fontWeight: FontWeight.bold,
+                  color: Colors.white,
+                ),
+              ),
+              const SizedBox(height: 8),
+              Text(
+                '${_startDateController.text} 至 ${_endDateController.text}',
+                style: TextStyle(
+                  fontSize: 14,
+                  color: Colors.white.withOpacity(0.8),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -279,11 +366,13 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
             const SizedBox(height: 16),
 
             // 获取数据按钮
-            ElevatedButton(
-              onPressed: _isLoading ? null : _fetchData,
-              child: _isLoading
-                  ? const CircularProgressIndicator()
-                  : const Text('获取数据'),
+            Center(
+              child: ElevatedButton(
+                onPressed: _isLoading ? null : _fetchData,
+                child: _isLoading
+                    ? const CircularProgressIndicator()
+                    : const Text('获取数据'),
+              ),
             ),
             const SizedBox(height: 16),
 
@@ -296,19 +385,11 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
 
             // 数据展示
             if (_summary != null) ...[
-              const Text(
-                '总编码时间',
-                style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
-              ),
-              Text(_summary!.cumulativeTotal.text),
+              _buildTotalTime(),
               const SizedBox(height: 24),
 
-              // 语言使用饼图
-              _buildPieChart(
-                _summary!.getAggregatedLanguages(),
-                '编程语言使用情况',
-                (lang) => lang.name,
-              ),
+              // 项目时间分布
+              _buildProjectList(),
               const SizedBox(height: 24),
 
               // 编辑器使用饼图
@@ -316,11 +397,17 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
                 _summary!.getAggregatedEditors(),
                 '编辑器使用情况',
                 (editor) => editor.name,
+                'editor',
               ),
               const SizedBox(height: 24),
 
-              // 项目时间分布
-              _buildProjectList(),
+              // 语言使用饼图
+              _buildPieChart(
+                _summary!.getAggregatedLanguages(),
+                '编程语言使用情况',
+                (lang) => lang.name,
+                'language',
+              ),
             ],
           ],
         ),
@@ -332,6 +419,7 @@ class _WakatimeScreenState extends State<WakatimeScreen> {
   void dispose() {
     _startDateController.dispose();
     _endDateController.dispose();
+    _animationController.dispose();
     super.dispose();
   }
 }