feat: 为所有弹出元素添加关闭过渡动画 + 页面路由切换动画

- SearchBar：关闭时遮罩淡出 + 面板上滑收起
- 图片插入 Popover：关闭时缩放淡出
- 删除确认：window.confirm 替换为自定义毛玻璃模态框（含淡入/淡出）
- 页面路由切换：离开时向上淡出，进入时向下淡入（含编辑器返回管理页）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/settings.local.json

@@ -6,7 +6,10 @@
       "mcp__Claude_in_Chrome__tabs_context_mcp",
       "Bash(git init *)",
       "Bash(git add *)",
-      "Bash(git commit -m ' *)"
+      "Bash(git commit -m ' *)",
+      "Bash(git remote *)",
+      "Bash(git push *)",
+      "Bash(git commit -m 'docs: 重写 README 为中文，添加英文版跳转链接 *)"
     ]
   }
 }

src/components/admin/MarkdownToolbar.jsx

@@ -1,4 +1,4 @@
-import { useState, useRef } from 'react';
+import { useState, useRef, useCallback } from 'react';
 import styles from './MarkdownToolbar.module.css';
 
 const TOOLS = [
@@ -9,13 +9,32 @@ const TOOLS = [
   { label: '</>',  title: '代码',    wrap: (s) => `<code>${s}</code>` },
 ];
 
+const CLOSE_DURATION = 160;
+
 export default function MarkdownToolbar({ textareaRef }) {
   const [imgPopover, setImgPopover] = useState(false);
+  const [popoverClosing, setPopoverClosing] = useState(false);
   const [imgUrl, setImgUrl] = useState('');
   const [imgAlt, setImgAlt] = useState('');
   const [uploading, setUploading] = useState(false);
   const fileInputRef = useRef(null);
 
+  const closePopover = useCallback(() => {
+    setPopoverClosing(true);
+    setTimeout(() => {
+      setImgPopover(false);
+      setPopoverClosing(false);
+    }, CLOSE_DURATION);
+  }, []);
+
+  const togglePopover = useCallback(() => {
+    if (imgPopover) {
+      closePopover();
+    } else {
+      setImgPopover(true);
+    }
+  }, [imgPopover, closePopover]);
+
   const insertAt = (html) => {
     const ta = textareaRef.current;
     if (!ta) return;
@@ -52,7 +71,7 @@ export default function MarkdownToolbar({ textareaRef }) {
     insertAt(`<img src="${imgUrl.trim()}" alt="${alt}" />`);
     setImgUrl('');
     setImgAlt('');
-    setImgPopover(false);
+    closePopover();
   };
 
   const handleFileChange = (e) => {
@@ -69,7 +88,7 @@ export default function MarkdownToolbar({ textareaRef }) {
       const alt = file.name.replace(/\.[^.]+$/, '') || '图片';
       insertAt(`<img src="${src}" alt="${alt}" />`);
       setUploading(false);
-      setImgPopover(false);
+      closePopover();
       e.target.value = '';
     };
     reader.readAsDataURL(file);
@@ -94,16 +113,16 @@ export default function MarkdownToolbar({ textareaRef }) {
 
         <button
           type="button"
-          className={styles.tool}
+          className={`${styles.tool} ${imgPopover ? styles.toolActive : ''}`}
           title="插入图片"
-          onMouseDown={(e) => { e.preventDefault(); setImgPopover(v => !v); }}
+          onMouseDown={(e) => { e.preventDefault(); togglePopover(); }}
         >
           🖼
         </button>
       </div>
 
       {imgPopover && (
-        <div className={`${styles.popover} glass-card`}>
+        <div className={`${styles.popover} ${popoverClosing ? styles.popoverOut : ''} glass-card`}>
           <p className={styles.popoverTitle}>插入图片</p>
 
           <div className={styles.popoverSection}>
@@ -162,7 +181,7 @@ export default function MarkdownToolbar({ textareaRef }) {
           <button
             type="button"
             className={styles.popoverClose}
-            onClick={() => setImgPopover(false)}
+            onClick={closePopover}
           >
             取消
           </button>

src/components/admin/MarkdownToolbar.module.css

@@ -32,6 +32,12 @@
   border-color: var(--color-muted);
 }
 
+.toolActive {
+  background: var(--color-surface-2);
+  color: var(--color-ink);
+  border-color: var(--color-muted);
+}
+
 .separator {
   width: 1px;
   height: 20px;
@@ -51,7 +57,17 @@
   display: flex;
   flex-direction: column;
   gap: var(--space-4);
-  animation: slideDown 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
+  animation: slideDown 200ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
+  transform-origin: top left;
+}
+
+.popoverOut {
+  animation: popoverCollapse 160ms cubic-bezier(0.4, 0, 1, 1) both;
+}
+
+@keyframes popoverCollapse {
+  from { opacity: 1; transform: translateY(0)    scale(1);    }
+  to   { opacity: 0; transform: translateY(-8px) scale(0.96); }
 }
 
 .popoverTitle {

src/components/layout/AppShell.jsx

@@ -3,26 +3,46 @@ import { useState, useEffect, useRef } from 'react';
 import Header from './Header';
 import Footer from './Footer';
 import PetalCanvas from '../ui/PetalCanvas';
+import styles from './AppShell.module.css';
 
 export default function AppShell() {
   const location = useLocation();
   const prevPath = useRef(location.pathname);
   const [petalTrigger, setPetalTrigger] = useState(0);
 
+  // Track location key to re-trigger enter animation on every navigation
+  const [displayKey, setDisplayKey] = useState(location.key);
+  const [exiting, setExiting] = useState(false);
+  const exitTimer = useRef(null);
+
   useEffect(() => {
-    if (prevPath.current !== location.pathname) {
+    if (prevPath.current === location.pathname) return;
     prevPath.current = location.pathname;
     setPetalTrigger(t => t + 1);
+
+    // Play exit on old content, then swap to new
+    setExiting(true);
+    clearTimeout(exitTimer.current);
+    exitTimer.current = setTimeout(() => {
       window.scrollTo({ top: 0, behavior: 'instant' });
-    }
+      setDisplayKey(location.key);
-  }, [location.pathname]);
+      setExiting(false);
+    }, 160);
+
+    return () => clearTimeout(exitTimer.current);
+  }, [location.pathname, location.key]);
 
   return (
     <>
       <PetalCanvas trigger={petalTrigger} />
       <Header />
       <main className="page-main" style={{ position: 'relative', zIndex: 1 }}>
+        <div
+          key={displayKey}
+          className={`${styles.pageContent} ${exiting ? styles.exit : styles.enter}`}
+        >
           <Outlet />
+        </div>
       </main>
       <Footer />
     </>

src/components/layout/AppShell.module.css

@@ -0,0 +1,22 @@
+.pageContent {
+  will-change: opacity, transform;
+}
+
+.enter {
+  animation: pageEnter 300ms cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+.exit {
+  animation: pageExit 160ms cubic-bezier(0.4, 0, 1, 1) both;
+  pointer-events: none;
+}
+
+@keyframes pageEnter {
+  from { opacity: 0; transform: translateY(14px); }
+  to   { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes pageExit {
+  from { opacity: 1; transform: translateY(0); }
+  to   { opacity: 0; transform: translateY(-8px); }
+}

src/components/ui/ConfirmModal.jsx

@@ -0,0 +1,57 @@
+import { useState, useEffect, useCallback } from 'react';
+import styles from './ConfirmModal.module.css';
+
+const CLOSE_DURATION = 180;
+
+export default function ConfirmModal({ open, title, message, confirmLabel = '确认', danger = false, onConfirm, onCancel }) {
+  const [visible, setVisible] = useState(false);
+  const [closing, setClosing] = useState(false);
+
+  useEffect(() => {
+    if (open) {
+      setClosing(false);
+      setVisible(true);
+    }
+  }, [open]);
+
+  const triggerClose = useCallback((cb) => {
+    setClosing(true);
+    setTimeout(() => {
+      setVisible(false);
+      setClosing(false);
+      cb?.();
+    }, CLOSE_DURATION);
+  }, []);
+
+  useEffect(() => {
+    const onKey = (e) => { if (e.key === 'Escape') triggerClose(onCancel); };
+    if (visible) window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, [visible, triggerClose, onCancel]);
+
+  if (!visible && !open) return null;
+
+  return (
+    <div
+      className={`${styles.overlay} ${closing ? styles.overlayOut : ''}`}
+      onClick={() => triggerClose(onCancel)}
+    >
+      <div
+        className={`${styles.modal} glass-card ${closing ? styles.modalOut : ''}`}
+        onClick={e => e.stopPropagation()}
+      >
+        {title && <h3 className={styles.title}>{title}</h3>}
+        {message && <p className={styles.message}>{message}</p>}
+        <div className={styles.actions}>
+          <button className="btn" onClick={() => triggerClose(onCancel)}>取消</button>
+          <button
+            className={`btn ${danger ? styles.btnDanger : 'btn--primary'}`}
+            onClick={() => triggerClose(onConfirm)}
+          >
+            {confirmLabel}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}

src/components/ui/ConfirmModal.module.css

@@ -0,0 +1,77 @@
+.overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.35);
+  backdrop-filter: blur(6px);
+  -webkit-backdrop-filter: blur(6px);
+  z-index: 400;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: var(--space-5);
+  animation: fadeIn 180ms ease both;
+}
+
+.overlayOut {
+  animation: fadeOut 180ms ease both;
+}
+
+.modal {
+  width: 100%;
+  max-width: 360px;
+  padding: var(--space-6);
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-4);
+  animation: modalIn 220ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
+}
+
+.modalOut {
+  animation: modalOut 180ms cubic-bezier(0.4, 0, 1, 1) both;
+}
+
+.title {
+  font-size: 1rem;
+  font-weight: 600;
+  color: var(--color-ink);
+  line-height: 1.4;
+}
+
+.message {
+  font-size: 0.875rem;
+  color: var(--color-ink-muted);
+  line-height: 1.65;
+}
+
+.actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: var(--space-3);
+  margin-top: var(--space-2);
+}
+
+.btnDanger {
+  background: #d94f4f;
+  color: #fff;
+  border-color: #d94f4f;
+}
+
+.btnDanger:hover {
+  background: #c03e3e;
+  border-color: #c03e3e;
+}
+
+@keyframes fadeOut {
+  from { opacity: 1; }
+  to   { opacity: 0; }
+}
+
+@keyframes modalIn {
+  from { opacity: 0; transform: scale(0.92) translateY(12px); }
+  to   { opacity: 1; transform: scale(1)    translateY(0); }
+}
+
+@keyframes modalOut {
+  from { opacity: 1; transform: scale(1)    translateY(0); }
+  to   { opacity: 0; transform: scale(0.94) translateY(8px); }
+}

src/components/ui/SearchBar.jsx

@@ -5,21 +5,36 @@ import { search } from '../../utils/searchIndex';
 import { formatDateShort } from '../../utils/dateFormat';
 import styles from './SearchBar.module.css';
 
+const CLOSE_DURATION = 180;
+
 export default function SearchBar({ open, onClose }) {
   const [query, setQuery] = useState('');
   const [results, setResults] = useState([]);
+  const [visible, setVisible] = useState(false);
+  const [closing, setClosing] = useState(false);
   const inputRef = useRef(null);
   const { articles } = useArticles();
   const navigate = useNavigate();
 
   useEffect(() => {
     if (open) {
+      setClosing(false);
+      setVisible(true);
       setQuery('');
       setResults([]);
       setTimeout(() => inputRef.current?.focus(), 50);
     }
   }, [open]);
 
+  const triggerClose = useCallback(() => {
+    setClosing(true);
+    setTimeout(() => {
+      setVisible(false);
+      setClosing(false);
+      onClose();
+    }, CLOSE_DURATION);
+  }, [onClose]);
+
   useEffect(() => {
     const t = setTimeout(() => {
       setResults(query.trim() ? search(query, articles) : []);
@@ -28,19 +43,26 @@ export default function SearchBar({ open, onClose }) {
   }, [query, articles]);
 
   const handleKey = useCallback((e) => {
-    if (e.key === 'Escape') onClose();
+    if (e.key === 'Escape') triggerClose();
-  }, [onClose]);
+  }, [triggerClose]);
 
   const goToArticle = (slug) => {
-    onClose();
+    triggerClose();
-    navigate(`/article/${slug}`);
+    setTimeout(() => navigate(`/article/${slug}`), CLOSE_DURATION);
   };
 
-  if (!open) return null;
+  if (!visible && !open) return null;
 
   return (
-    <div className={styles.overlay} onClick={onClose} onKeyDown={handleKey}>
+    <div
-      <div className={`${styles.panel} glass`} onClick={e => e.stopPropagation()}>
+      className={`${styles.overlay} ${closing ? styles.overlayOut : ''}`}
+      onClick={triggerClose}
+      onKeyDown={handleKey}
+    >
+      <div
+        className={`${styles.panel} ${closing ? styles.panelOut : ''} glass`}
+        onClick={e => e.stopPropagation()}
+      >
         <div className={styles.inputRow}>
           <svg width="18" height="18" viewBox="0 0 24 24" fill="none" className={styles.icon}>
             <circle cx="11" cy="11" r="8" stroke="currentColor" strokeWidth="2"/>
@@ -53,7 +75,7 @@ export default function SearchBar({ open, onClose }) {
             onChange={e => setQuery(e.target.value)}
             placeholder="搜索文章…"
           />
-          <button className={styles.close} onClick={onClose}>✕</button>
+          <button className={styles.close} onClick={triggerClose}>✕</button>
         </div>
 
         {results.length > 0 && (

src/components/ui/SearchBar.module.css

@@ -8,7 +8,11 @@
   align-items: flex-start;
   justify-content: center;
   padding-top: 100px;
-  animation: fadeIn 150ms ease;
+  animation: fadeIn 150ms ease both;
+}
+
+.overlayOut {
+  animation: fadeOut 180ms ease both;
 }
 
 .panel {
@@ -16,7 +20,21 @@
   max-width: 560px;
   border-radius: var(--radius-lg);
   overflow: hidden;
-  animation: slideDown 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
+  animation: slideDown 200ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
+}
+
+.panelOut {
+  animation: slideUp 180ms cubic-bezier(0.4, 0, 1, 1) both;
+}
+
+@keyframes fadeOut {
+  from { opacity: 1; }
+  to   { opacity: 0; }
+}
+
+@keyframes slideUp {
+  from { opacity: 1; transform: translateY(0)   scale(1); }
+  to   { opacity: 0; transform: translateY(-12px) scale(0.97); }
 }
 
 .inputRow {

src/pages/AdminPage.jsx

@@ -1,5 +1,7 @@
+import { useState } from 'react';
 import { Link } from 'react-router-dom';
 import AdminGate from '../components/admin/AdminGate';
+import ConfirmModal from '../components/ui/ConfirmModal';
 import { useArticles } from '../contexts/ArticleContext';
 import { formatDateShort } from '../utils/dateFormat';
 import styles from './AdminPage.module.css';
@@ -8,11 +10,7 @@ function AdminContent() {
   const { articles, deleteArticle } = useArticles();
   const sorted = [...articles].sort((a, b) => new Date(b.createdAt) - new Date(a.createdAt));
 
-  const handleDelete = (slug, title) => {
+  const [pendingDelete, setPendingDelete] = useState(null); // { slug, title }
-    if (window.confirm(`确认删除「${title}」？此操作不可撤销。`)) {
-      deleteArticle(slug);
-    }
-  };
 
   return (
     <div className={`container ${styles.page}`}>
@@ -69,7 +67,7 @@ function AdminContent() {
                   <button
                     className="btn btn--ghost"
                     style={{ color: 'var(--color-accent-strong)' }}
-                    onClick={() => handleDelete(a.slug, a.title)}
+                    onClick={() => setPendingDelete({ slug: a.slug, title: a.title })}
                   >
                     删除
                   </button>
@@ -82,6 +80,16 @@ function AdminContent() {
           <p className={styles.empty}>还没有文章，<Link to="/admin/new">点击新建</Link></p>
         )}
       </div>
+
+      <ConfirmModal
+        open={!!pendingDelete}
+        title={`删除「${pendingDelete?.title}」`}
+        message="此操作不可撤销，文章将被永久删除。"
+        confirmLabel="确认删除"
+        danger
+        onConfirm={() => { deleteArticle(pendingDelete.slug); setPendingDelete(null); }}
+        onCancel={() => setPendingDelete(null)}
+      />
     </div>
   );
 }