feat: Allow custom placeholder text for search components and enhance secret mode empty state message.

app/secret/page.tsx

@@ -38,6 +38,7 @@ function SecretHomePage() {
                     currentSource=""
                     checkedSources={completedSources}
                     totalSources={totalSources}
+                    placeholder="输入关键词开始搜索..."
                 />
             </div>
 
@@ -57,10 +58,13 @@ function SecretHomePage() {
                     <NoResults onReset={handleReset} />
                 )}
 
-                {/* Empty State - Just show a dark placeholder or nothing for secret mode */}
+                {/* Empty State - Hidden mode information */}
                 {!loading && !hasSearched && (
-                    <div className="flex flex-col items-center justify-center py-20 text-[var(--text-color-secondary)]">
-                        <p>Secret Mode Active</p>
+                    <div className="flex flex-col items-center justify-center py-20 text-center">
+                        <p className="text-lg text-[var(--text-color)] mb-2">隐藏模式已激活</p>
+                        <p className="text-sm text-[var(--text-color-secondary)]">
+                            搜索后将显示结果，搜索记录不会保存到首页历史
+                        </p>
                     </div>
                 )}
             </main>

components/search/SearchBox.tsx

@@ -10,9 +10,10 @@ interface SearchBoxProps {
     onSearch: (query: string) => void;
     onClear?: () => void;
     initialQuery?: string;
+    placeholder?: string;
 }
 
-export function SearchBox({ onSearch, onClear, initialQuery = '' }: SearchBoxProps) {
+export function SearchBox({ onSearch, onClear, initialQuery = '', placeholder = '搜索电影、电视剧、综艺...' }: SearchBoxProps) {
     const [query, setQuery] = useState(initialQuery);
     const inputRef = useRef<HTMLInputElement>(null);
 
@@ -74,7 +75,7 @@ export function SearchBox({ onSearch, onClear, initialQuery = '' }: SearchBoxPro
                 onFocus={handleInputFocus}
                 onBlur={handleInputBlur}
                 onKeyDown={handleKeyDown}
-                placeholder="搜索电影、电视剧、综艺..."
+                placeholder={placeholder}
                 className="text-base sm:text-lg pr-28 sm:pr-36 md:pr-44 truncate"
                 aria-label="搜索视频内容"
                 aria-expanded={isDropdownOpen}

components/search/SearchForm.tsx

@@ -11,6 +11,7 @@ interface SearchFormProps {
   currentSource?: string;
   checkedSources?: number;
   totalSources?: number;
+  placeholder?: string;
 }
 
 export function SearchForm({
@@ -21,6 +22,7 @@ export function SearchForm({
   currentSource = '',
   checkedSources = 0,
   totalSources = 16,
+  placeholder,
 }: SearchFormProps) {
   return (
     <div className="max-w-3xl mx-auto">
@@ -28,6 +30,7 @@ export function SearchForm({
         onSearch={onSearch}
         onClear={onClear}
         initialQuery={initialQuery}
+        placeholder={placeholder}
       />
 
       {/* Loading Animation */}