修复前景色不显示的问题

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="Black">
+    <option name="sdkName" value="Python 3.9 (GoogleNanoBananaApp) (2)" />
+  </component>
   <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (GoogleNanoBananaApp) (2)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file

 {
   "api_key": "AIzaSyBRIH8iItqTZXg7d4zAWVNhyit2CZbXWIU",
   "saved_prompts": [
-    "生成一张白人夫妻正常的买家秀展现我的戒指",
-    "主石换成闪耀的鸽血红红宝石，火彩非常好",
-    "生成一张白人夫妻在自家后院里的椅子坐着，亲密姿态，展现笑容，妻子手背捂嘴笑来展现我的戒指，两个人年龄大概40岁上下，男性微胖，女性短发，男士和女士脸上有一些痕迹，手要略显粗糙，普通人长相",
-    "一副美丽的嵖岈山风景，冬日清晨，初雪"
+    "主石换成闪耀的祖母绿",
+    "主石换成闪耀的钻石",
+    "主石换成闪耀的莫桑石",
+    "主石换成闪耀的鸽血红宝石"
   ],
   "db_config": {
     "host": "rm-uf6hx9ka75jdm2474xo.mysql.rds.aliyuncs.com",
@@ -15,5 +15,5 @@
     "table": "nano_banana_users"
   },
   "last_user": "testuser",
-  "saved_password_hash": ""
+  "saved_password_hash": "50630320e4a550f2dba371820dad9d9301d456d101aca4d5ad8f4f3bcc9c1ed9"
 }
\ No newline at end of file

@@ -114,20 +114,22 @@ class LoginDialog(QDialog):
 
         main_layout.addSpacing(10)
 
-        # Form layout for username and password
-        form_layout = QFormLayout()
-        form_layout.setSpacing(15)
-
-        # Username
+        # Username field
         username_label = QLabel("用户名")
         username_label.setObjectName("field_label")
+        main_layout.addWidget(username_label)
+
         self.username_entry = QLineEdit()
         self.username_entry.setText(self.last_user)
-        form_layout.addRow(username_label, self.username_entry)
+        main_layout.addWidget(self.username_entry)
+
+        main_layout.addSpacing(10)
 
-        # Password
+        # Password field
         password_label = QLabel("密码")
         password_label.setObjectName("field_label")
+        main_layout.addWidget(password_label)
+
         self.password_entry = QLineEdit()
         self.password_entry.setEchoMode(QLineEdit.Password)
 
@@ -139,9 +141,7 @@ class LoginDialog(QDialog):
         self.password_entry.textChanged.connect(self.on_password_change)
         self.password_entry.returnPressed.connect(self.on_login)
 
-        form_layout.addRow(password_label, self.password_entry)
-
-        main_layout.addLayout(form_layout)
+        main_layout.addWidget(self.password_entry)
 
         # Checkboxes
         checkbox_layout = QHBoxLayout()
@@ -483,8 +483,6 @@ class ImageGeneratorWindow(QMainWindow):
 
         prompt_toolbar.addWidget(QLabel("快速选择:"))
         self.saved_prompts_combo = QComboBox()
-        self.saved_prompts_combo.currentIndexChanged.connect(self.load_saved_prompt)
-        self.update_saved_prompts_list()
         prompt_toolbar.addWidget(self.saved_prompts_combo)
 
         delete_prompt_btn = QPushButton("🗑️ 删除")
@@ -500,6 +498,9 @@ class ImageGeneratorWindow(QMainWindow):
         self.prompt_text.textChanged.connect(self.check_favorite_status)
         prompt_layout.addWidget(self.prompt_text)
 
+        # Update list first (before connecting signal to avoid triggering it during init)
+        self.update_saved_prompts_list()
+
         prompt_group.setLayout(prompt_layout)
         content_row.addWidget(prompt_group, 2)
 
@@ -517,7 +518,7 @@ class ImageGeneratorWindow(QMainWindow):
         settings_layout.addWidget(QLabel("图片尺寸"))
         self.image_size = QComboBox()
         self.image_size.addItems(["1K", "2K", "4K"])
-        self.image_size.setCurrentIndex(1)
+        self.image_size.setCurrentIndex(1)  # Default to 2K
         settings_layout.addWidget(self.image_size)
 
         settings_layout.addStretch()
@@ -563,62 +564,58 @@ class ImageGeneratorWindow(QMainWindow):
 
     def apply_styles(self):
         """Apply QSS stylesheet"""
+        """Apply QSS stylesheet - 最小化自定义样式"""
         self.setStyleSheet("""
-            QMainWindow {
-                background-color: #ffffff;
-            }
-            QGroupBox {
-                font-weight: bold;
-                font-size: 10pt;
-                border: 1px solid #e5e5e5;
-                border-radius: 6px;
-                margin-top: 10px;
-                padding-top: 10px;
-            }
-            QGroupBox::title {
-                color: #1d1d1f;
-                subcontrol-origin: margin;
-                left: 10px;
-                padding: 0 5px;
-            }
-            QPushButton {
-                background-color: #f6f6f6;
-                color: #1d1d1f;
-                border: 1px solid #e5e5e5;
-                border-radius: 4px;
-                padding: 6px 12px;
-                font-size: 9pt;
-            }
-            QPushButton:hover {
-                background-color: #e8e8e8;
-            }
-            QPushButton:pressed {
-                background-color: #c8c8c8;
-            }
-            QPushButton:disabled {
-                background-color: #f6f6f6;
-                color: #999999;
-            }
-            QComboBox {
-                border: 1px solid #e5e5e5;
-                border-radius: 4px;
-                padding: 5px;
-                background-color: white;
-            }
-            QTextEdit {
-                border: 1px solid #e5e5e5;
-                border-radius: 4px;
-                background-color: #fafafa;
-                font-size: 10pt;
-            }
-            QLabel {
-                color: #1d1d1f;
-            }
-            QScrollArea {
-                border: none;
-                background-color: #f6f6f6;
-            }
-        """)
+                QMainWindow {
+                    background-color: #ffffff;
+                }
+                QGroupBox {
+                    font-weight: bold;
+                    font-size: 10pt;
+                    border: 1px solid #e5e5e5;
+                    border-radius: 6px;
+                    margin-top: 10px;
+                    padding-top: 10px;
+                }
+                QGroupBox::title {
+                    subcontrol-origin: margin;
+                    left: 10px;
+                    padding: 0 5px;
+                }
+                QPushButton {
+                    padding: 6px 12px;
+                    font-size: 9pt;
+                    border: 1px solid #cccccc;
+                    border-radius: 4px;
+                }
+                QPushButton:disabled {
+                    color: #999999;
+                }
+                QComboBox {
+                    padding: 5px;
+                    min-width: 100px;
+                }
+                QTextEdit {
+                    border: 1px solid #e5e5e5;
+                    border-radius: 4px;
+                    font-size: 10pt;
+                }
+                QScrollArea {
+                    border: none;
+                    background-color: #f6f6f6;
+                }
+                /* 只保留必要的边框和背景，不设置颜色 */
+                QLineEdit, QComboBox, QTextEdit {
+                    border: 1px solid #cccccc;
+                    border-radius: 4px;
+                }
+                QLineEdit:focus, QComboBox:focus, QTextEdit:focus {
+                    border: 1px solid #007AFF;  /* 保持焦点状态 */
+                }
+            """)
+
+        # Connect signals after all widgets are created
+        self.saved_prompts_combo.currentIndexChanged.connect(self.load_saved_prompt)
 
     def upload_images(self):
         """Upload reference images"""
@@ -710,10 +707,13 @@ class ImageGeneratorWindow(QMainWindow):
 
     def update_saved_prompts_list(self):
         """Update the saved prompts dropdown"""
+        # Block signals to avoid triggering load_saved_prompt during update
+        self.saved_prompts_combo.blockSignals(True)
         self.saved_prompts_combo.clear()
         if self.saved_prompts:
             display_prompts = [p[:50] + "..." if len(p) > 50 else p for p in self.saved_prompts]
             self.saved_prompts_combo.addItems(display_prompts)
+        self.saved_prompts_combo.blockSignals(False)
 
     def check_favorite_status(self):
         """Check if current prompt is favorited"""