fix(ui): Pin modal action bar; prevent bottom content overflow\n\n- Move action buttons to fixed .modal-footer at the bottom\n- Make modal a column flex container; scroll only body\n- Ensure buttons remain visible on small viewports\n- Remove sticky edge cases causing leaked content

.gitignore

@@ -7,4 +7,4 @@ release/
 .env.local
 *.tsbuildinfo
 .npmrc
-CLAUDE.md
+CLAUDE.mdAGENTS.md

src/components/AddProviderModal.css

@@ -13,20 +13,74 @@
 
 .modal-content {
   background: white;
-  border-radius: 8px;
-  padding: 2rem;
+  border-radius: 10px;
+  padding: 0;
   width: 90%;
-  max-width: 600px;
+  max-width: 640px;
   max-height: 90vh;
-  overflow-y: auto;
-  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
+  overflow: hidden; /* 由 body 滚动，标题栏固定 */
+  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
   position: relative;
   z-index: 1001;
+  display: flex;            /* 纵向布局，便于底栏固定 */
+  flex-direction: column;
 }
 
-.modal-content h2 {
-  margin-bottom: 1.5rem;
-  color: #2c3e50;
+/* 模拟窗口标题栏 */
+.modal-titlebar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  height: 3rem; /* 与主窗口标题栏一致 */
+  padding: 0 12px; /* 接近主头部的水平留白 */
+  background: #3498db; /* 与 .app-header 相同 */
+  color: #fff;
+  border-top-left-radius: 10px;
+  border-top-right-radius: 10px;
+}
+
+/* 左侧占位以保证标题居中（与右侧关闭按钮宽度相当） */
+.modal-spacer { width: 32px; flex: 0 0 32px; }
+
+.modal-title {
+  flex: 1;
+  text-align: center;
+  color: #fff;
+  font-weight: 600;
+  font-size: 1rem;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.modal-close-btn {
+  background: transparent;
+  border: none;
+  color: #fff;
+  font-size: 20px;
+  line-height: 1;
+  padding: 2px 6px;
+  border-radius: 6px;
+  cursor: pointer;
+}
+
+.modal-close-btn:hover {
+  background: rgba(255, 255, 255, 0.18);
+  color: #fff;
+}
+
+.modal-form {            /* 表单外层包裹 body + footer */
+  display: flex;
+  flex-direction: column;
+  flex: 1 1 auto;
+  min-height: 0;         /* 允许子元素正确计算高度 */
+}
+
+.modal-body {
+  padding: 1.25rem 1.5rem 1.5rem;
+  overflow: auto;        /* 仅内容区滚动 */
+  flex: 1 1 auto;
+  min-height: 0;
 }
 
 .error-message {
@@ -109,11 +163,13 @@
   border-color: #3498db;
 }
 
-.form-actions {
+.modal-footer {          /* 固定在弹窗底部（非滚动区） */
   display: flex;
   gap: 1rem;
   justify-content: flex-end;
-  margin-top: 2rem;
+  padding: 0.75rem 1.5rem;
+  border-top: 1px solid #ecf0f1;
+  background: #fff;
 }
 
 .cancel-btn,

src/components/ProviderForm.tsx

@@ -181,34 +181,59 @@ const ProviderForm: React.FC<ProviderFormProps> = ({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
+  // 支持按下 ESC 关闭弹窗
+  useEffect(() => {
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        e.preventDefault();
+        onClose();
+      }
+    };
+    window.addEventListener('keydown', onKeyDown);
+    return () => window.removeEventListener('keydown', onKeyDown);
+  }, [onClose]);
+
   return (
-    <div className="modal-overlay">
+    <div className="modal-overlay" onMouseDown={(e) => { if (e.target === e.currentTarget) onClose(); }}>
       <div className="modal-content">
-        <h2>{title}</h2>
+        <div className="modal-titlebar">
+          <div className="modal-spacer" />
+          <div className="modal-title" title={title}>{title}</div>
+          <button
+            type="button"
+            className="modal-close-btn"
+            aria-label="关闭"
+            onClick={onClose}
+            title="关闭"
+          >
+            ×
+          </button>
+        </div>
 
-        {error && <div className="error-message">{error}</div>}
+        <form onSubmit={handleSubmit} className="modal-form">
+          <div className="modal-body">
+          {error && <div className="error-message">{error}</div>}
 
-        {showPresets && (
-          <div className="presets">
-            <label>快速选择模板：</label>
-            <div className="preset-buttons">
-              {providerPresets.map((preset, index) => (
-                <button
-                  key={index}
-                  type="button"
-                  className={`preset-btn ${
-                    selectedPreset === index ? "selected" : ""
-                  }`}
-                  onClick={() => applyPreset(preset, index)}
-                >
-                  {preset.name}
-                </button>
-              ))}
+          {showPresets && (
+            <div className="presets">
+              <label>快速选择模板：</label>
+              <div className="preset-buttons">
+                {providerPresets.map((preset, index) => (
+                  <button
+                    key={index}
+                    type="button"
+                    className={`preset-btn ${
+                      selectedPreset === index ? "selected" : ""
+                    }`}
+                    onClick={() => applyPreset(preset, index)}
+                  >
+                    {preset.name}
+                  </button>
+                ))}
+              </div>
             </div>
-          </div>
-        )}
+          )}
 
-        <form onSubmit={handleSubmit}>
           <div className="form-group">
             <label htmlFor="name">供应商名称 *</label>
             <input
@@ -282,14 +307,17 @@ const ProviderForm: React.FC<ProviderFormProps> = ({
             </small>
           </div>
 
-          <div className="form-actions">
-            <button type="button" className="cancel-btn" onClick={onClose}>
-              取消
-            </button>
-            <button type="submit" className="submit-btn">
-              {submitText}
-            </button>
           </div>
+
+          <div className="modal-footer">
+              <button type="button" className="cancel-btn" onClick={onClose}>
+                取消
+              </button>
+              <button type="submit" className="submit-btn">
+                {submitText}
+              </button>
+          </div>
+
         </form>
       </div>
     </div>