diff --git a/src/App.tsx b/src/App.tsx
index 6af9b66..c8b97b1 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -53,18 +53,24 @@ function AppContent() {
   }, [setShowPromptPanel, setShowHistory]);
 
   return (
-    <div className="h-screen bg-white text-gray-900 flex flex-col font-sans">
-      <Header />
+    <div className="h-screen bg-gray-50 text-gray-900 flex flex-col font-sans">
+      <div className="shadow-sm">
+        <Header />
+      </div>
       
       <div className="flex-1 flex overflow-hidden">
         <div className={cn("flex-shrink-0 transition-all duration-300", !showPromptPanel && "w-8")}>
-          <PromptComposer />
+          <div className="h-full shadow-lg">
+            <PromptComposer />
+          </div>
         </div>
         <div className="flex-1 min-w-0">
           <ImageCanvas />
         </div>
         <div className="flex-shrink-0">
-          <HistoryPanel />
+          <div className="h-full shadow-lg">
+            <HistoryPanel />
+          </div>
         </div>
       </div>
     </div>
diff --git a/src/components/Header.tsx b/src/components/Header.tsx
index 70a86c4..25f6624 100644
--- a/src/components/Header.tsx
+++ b/src/components/Header.tsx
@@ -8,7 +8,7 @@ export const Header: React.FC = () => {
 
   return (
     <>
-      <header className="h-12 bg-white border-b border-gray-100 flex items-center justify-between px-3">
+      <header className="h-12 bg-white border-b border-gray-100 flex items-center justify-between px-3 shadow-sm">
         <div className="flex items-center space-x-2">
           <div className="flex items-center justify-center w-8 h-8 rounded-lg bg-yellow-50">
             <div className="text-lg">🍌</div>
diff --git a/src/components/HistoryPanel.tsx b/src/components/HistoryPanel.tsx
index dddab0c..b954d55 100644
--- a/src/components/HistoryPanel.tsx
+++ b/src/components/HistoryPanel.tsx
@@ -211,7 +211,7 @@ export const HistoryPanel: React.FC = () => {
   }
 
   return (
-    <div className="w-72 bg-white border-l border-gray-200 p-4 flex flex-col h-full">
+    <div className="w-72 bg-white border-l border-gray-200 p-4 flex flex-col h-full shadow-lg">
       {/* 头部 */}
       <div className="flex items-center justify-between mb-3">
         <div className="flex items-center space-x-2">
@@ -306,7 +306,7 @@ export const HistoryPanel: React.FC = () => {
                 className={cn(
                   'relative aspect-square rounded border cursor-pointer transition-all duration-200 overflow-hidden',
                   selectedGenerationId === generation.id
-                    ? 'border-yellow-400'
+                    ? 'border-yellow-400 ring-2 ring-yellow-400/30'
                     : 'border-gray-200 hover:border-gray-300'
                 )}
                 onClick={() => {
@@ -325,7 +325,8 @@ export const HistoryPanel: React.FC = () => {
                     if (asset.url) {
                       setHoveredImage({
                         url: asset.url,
-                        title: `生成记录 G${index + 1}: ${generation.prompt.substring(0, 50)}${generation.prompt.length > 50 ? '...' : ''}`
+                        title: `生成记录 G${index + 1}`,
+                        description: generation.prompt
                       });
                       setPreviewPosition({x: e.clientX, y: e.clientY});
                     }
@@ -405,7 +406,7 @@ export const HistoryPanel: React.FC = () => {
                 className={cn(
                   'relative aspect-square rounded border cursor-pointer transition-all duration-200 overflow-hidden',
                   selectedEditId === edit.id
-                    ? 'border-purple-400'
+                    ? 'border-purple-400 ring-2 ring-purple-400/30'
                     : 'border-gray-200 hover:border-gray-300'
                 )}
                 onClick={() => {
@@ -425,7 +426,8 @@ export const HistoryPanel: React.FC = () => {
                     if (asset.url) {
                       setHoveredImage({
                         url: asset.url,
-                        title: `编辑记录 E${index + 1}: ${edit.instruction.substring(0, 50)}${edit.instruction.length > 50 ? '...' : ''}`
+                        title: `编辑记录 E${index + 1}`,
+                        description: edit.instruction
                       });
                       setPreviewPosition({x: e.clientX, y: e.clientY});
                     }
@@ -501,24 +503,7 @@ export const HistoryPanel: React.FC = () => {
         )}
       </div>
 
-      {/* 当前图像信息 */}
-      {(canvasImage || imageDimensions) && (
-        <div className="mb-4 p-3 bg-gray-50 rounded-lg border border-gray-200">
-          <h4 className="text-xs font-medium text-gray-500 mb-2">当前图像</h4>
-          <div className="space-y-1 text-xs text-gray-600">
-            {imageDimensions && (
-              <div className="flex justify-between">
-                <span>尺寸:</span>
-                <span className="text-gray-800">{imageDimensions.width} × {imageDimensions.height}</span>
-              </div>
-            )}
-            <div className="flex justify-between">
-              <span>模式:</span>
-              <span className="text-gray-800 capitalize">{selectedTool}</span>
-            </div>
-          </div>
-        </div>
-      )}
+      
 
       {/* 生成详情 */}
       <div className="flex-1 overflow-y-auto min-h-0">
@@ -794,22 +779,35 @@ export const HistoryPanel: React.FC = () => {
       {/* 悬浮预览 */}
       {hoveredImage && (
         <div 
-          className="fixed z-50 shadow-2xl border-2 border-gray-300 rounded-lg overflow-hidden"
+          className="fixed z-50 shadow-2xl border border-gray-300 rounded-lg overflow-hidden bg-white backdrop-blur-sm"
           style={{
-            left: Math.min(previewPosition.x + 10, window.innerWidth - 320),
-            top: Math.min(previewPosition.y + 10, window.innerHeight - 320),
-            maxWidth: '300px',
-            maxHeight: '300px'
+            left: Math.min(previewPosition.x + 10, window.innerWidth - 250),
+            top: Math.min(previewPosition.y + 10, window.innerHeight - 250),
+            maxWidth: '250px',
+            maxHeight: '250px'
           }}
         >
-          <div className="bg-black text-white text-xs p-1 truncate">
+          <div className="bg-gray-900 text-white text-xs p-2 truncate font-medium">
             {hoveredImage.title}
           </div>
           <img 
             src={hoveredImage.url} 
             alt="预览" 
-            className="w-full h-full object-contain max-w-[300px] max-h-[300px]"
+            className="w-full h-auto max-h-[150px] object-contain"
           />
+          {/* 图像信息 */}
+          <div className="p-2 bg-gray-50 border-t border-gray-200 text-xs">
+            {imageDimensions && (
+              <div className="flex justify-between text-gray-600">
+                <span>尺寸:</span>
+                <span className="text-gray-800">{imageDimensions.width} × {imageDimensions.height}</span>
+              </div>
+            )}
+            <div className="flex justify-between text-gray-600 mt-1">
+              <span>模式:</span>
+              <span className="text-gray-800 capitalize">{selectedTool}</span>
+            </div>
+          </div>
         </div>
       )}
     </div>
diff --git a/src/components/ImageCanvas.tsx b/src/components/ImageCanvas.tsx
index 3588f70..aa5f0df 100644
--- a/src/components/ImageCanvas.tsx
+++ b/src/components/ImageCanvas.tsx
@@ -20,7 +20,9 @@ export const ImageCanvas: React.FC = () => {
     selectedTool,
     isGenerating,
     brushSize,
-    setBrushSize
+    setBrushSize,
+    showHistory,
+    showPromptPanel
   } = useAppStore();
 
   const stageRef = useRef<any>(null);
@@ -80,6 +82,22 @@ export const ImageCanvas: React.FC = () => {
     return () => window.removeEventListener('resize', updateSize);
   }, []);
 
+  // 监听面板状态变化以调整画布大小
+  useEffect(() => {
+    // 使用 setTimeout 确保 DOM 已更新
+    const timer = setTimeout(() => {
+      const container = document.getElementById('canvas-container');
+      if (container) {
+        setStageSize({
+          width: container.offsetWidth,
+          height: container.offsetHeight
+        });
+      }
+    }, 100);
+    
+    return () => clearTimeout(timer);
+  }, [showPromptPanel, showHistory]);
+
   // 处理鼠标滚轮缩放
   useEffect(() => {
     const container = document.getElementById('canvas-container');
@@ -188,69 +206,7 @@ export const ImageCanvas: React.FC = () => {
   return (
     <div className="flex flex-col h-full">
       {/* 工具栏 */}
-      <div className="p-2 border-b border-gray-200 bg-white">
-        <div className="flex items-center justify-between">
-          {/* 左侧 - 缩放控制 */}
-          <div className="flex items-center space-x-1">
-            <Button variant="outline" size="sm" onClick={() => handleZoom(-0.1)} className="h-8 w-8 p-0">
-              <ZoomOut className="h-4 w-4" />
-            </Button>
-            <span className="text-xs text-gray-400 min-w-[40px] text-center">
-              {Math.round(canvasZoom * 100)}%
-            </span>
-            <Button variant="outline" size="sm" onClick={() => handleZoom(0.1)} className="h-8 w-8 p-0">
-              <ZoomIn className="h-4 w-4" />
-            </Button>
-            <Button variant="outline" size="sm" onClick={handleReset} className="h-8 w-8 p-0">
-              <RotateCcw className="h-4 w-4" />
-            </Button>
-          </div>
-
-          {/* 右侧 - 工具和操作 */}
-          <div className="flex items-center space-x-1">
-            {selectedTool === 'mask' && (
-              <>
-                <div className="flex items-center space-x-1 mr-1">
-                  <span className="text-xs text-gray-400">画笔:</span>
-                  <input
-                    type="range"
-                    min="5"
-                    max="50"
-                    value={brushSize}
-                    onChange={(e) => setBrushSize(parseInt(e.target.value))}
-                    className="w-12 h-2 bg-gray-800 rounded-lg appearance-none cursor-pointer slider"
-                  />
-                  <span className="text-xs text-gray-400 w-6">{brushSize}</span>
-                </div>
-                <Button
-                  variant="outline"
-                  size="sm"
-                  onClick={clearBrushStrokes}
-                  disabled={brushStrokes.length === 0}
-                  className="h-8 w-8 p-0"
-                >
-                  <Eraser className="h-4 w-4" />
-                </Button>
-              </>
-            )}
-            
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={() => setShowMasks(!showMasks)}
-              className={cn(showMasks && 'bg-yellow-400/10 border-yellow-400/50', 'h-8 w-8 p-0')}
-            >
-              {showMasks ? <Eye className="h-4 w-4" /> : <EyeOff className="h-4 w-4" />}
-            </Button>
-            
-            {canvasImage && (
-              <Button variant="secondary" size="sm" onClick={handleDownload} className="h-8 px-2">
-                <Download className="h-4 w-4" />
-              </Button>
-            )}
-          </div>
-        </div>
-      </div>
+      
 
       {/* 画布区域 */}
       <div 
@@ -276,7 +232,7 @@ export const ImageCanvas: React.FC = () => {
 
         {isGenerating && (
           <div className="absolute inset-0 flex items-center justify-center bg-gray-900/40 z-50 backdrop-blur-sm">
-            <div className="text-center bg-white/90 rounded-xl p-6 shadow-lg">
+            <div className="text-center bg-white/90 rounded-xl p-6 shadow-2xl backdrop-blur-sm border border-gray-200/50">
               <div className="animate-spin rounded-full h-10 w-10 border-2 border-yellow-400 border-t-transparent mx-auto mb-3" />
               <p className="text-gray-700 text-sm font-medium">正在创建图像...</p>
             </div>
@@ -349,6 +305,48 @@ export const ImageCanvas: React.FC = () => {
             )}
           </Layer>
         </Stage>
+
+        {/* 悬浮操作按钮 */}
+        {image && !isGenerating && (
+          <div className="absolute bottom-4 left-1/2 transform -translate-x-1/2 bg-white/80 backdrop-blur-sm rounded-full shadow-lg border border-gray-200 px-3 py-2 flex items-center space-x-2">
+            <Button 
+              variant="ghost" 
+              size="sm" 
+              onClick={() => handleZoom(-0.1)} 
+              className="h-8 w-8 p-0 text-gray-600 hover:text-gray-900 hover:bg-gray-100"
+            >
+              <ZoomOut className="h-4 w-4" />
+            </Button>
+            <span className="text-xs text-gray-500 min-w-[40px] text-center">
+              {Math.round(canvasZoom * 100)}%
+            </span>
+            <Button 
+              variant="ghost" 
+              size="sm" 
+              onClick={() => handleZoom(0.1)} 
+              className="h-8 w-8 p-0 text-gray-600 hover:text-gray-900 hover:bg-gray-100"
+            >
+              <ZoomIn className="h-4 w-4" />
+            </Button>
+            <Button 
+              variant="ghost" 
+              size="sm" 
+              onClick={handleReset} 
+              className="h-8 w-8 p-0 text-gray-600 hover:text-gray-900 hover:bg-gray-100"
+            >
+              <RotateCcw className="h-4 w-4" />
+            </Button>
+            <div className="w-px h-6 bg-gray-200"></div>
+            <Button 
+              variant="ghost" 
+              size="sm" 
+              onClick={handleDownload} 
+              className="h-8 w-8 p-0 text-gray-600 hover:text-gray-900 hover:bg-gray-100"
+            >
+              <Download className="h-4 w-4" />
+            </Button>
+          </div>
+        )}
       </div>
 
       {/* 状态栏 */}
diff --git a/src/components/PromptComposer.tsx b/src/components/PromptComposer.tsx
index 4699779..be89a82 100644
--- a/src/components/PromptComposer.tsx
+++ b/src/components/PromptComposer.tsx
@@ -156,7 +156,7 @@ export const PromptComposer: React.FC = () => {
 
   return (
     <>
-    <div className="w-72 h-full bg-white border-r border-gray-200 p-4 flex flex-col space-y-5 overflow-y-auto">
+    <div className="w-72 h-full bg-white border-r border-gray-200 p-4 flex flex-col space-y-5 overflow-y-auto shadow-lg">
       <div>
         <div className="flex items-center justify-between mb-2">
           <h3 className="text-xs font-medium text-gray-500 uppercase tracking-wide">模式</h3>