feat: add skeleton components and theme provider

src/App.tsx

@@ -13,6 +13,7 @@ import Toast from './components/Toast'
 import { useToast } from './hooks/useToast'
 import { useOnlineStatus } from './hooks/useOnlineStatus'
 import { RELAYS } from './config/relays'
+import { SkeletonThemeProvider } from './components/Skeletons'
 
 const DEFAULT_ARTICLE = import.meta.env.VITE_DEFAULT_ARTICLE_NADDR || 
   'naddr1qvzqqqr4gupzqmjxss3dld622uu8q25gywum9qtg4w4cv4064jmg20xsac2aam5nqqxnzd3cxqmrzv3exgmr2wfesgsmew'
@@ -271,6 +272,7 @@ function App() {
   }
 
   return (
+    <SkeletonThemeProvider>
       <EventStoreProvider eventStore={eventStore}>
         <AccountsProvider manager={accountManager}>
           <BrowserRouter>
@@ -287,6 +289,7 @@ function App() {
           )}
         </AccountsProvider>
       </EventStoreProvider>
+    </SkeletonThemeProvider>
   )
 }
 

src/components/Skeletons/BlogPostSkeleton.tsx

@@ -0,0 +1,42 @@
+import React from 'react'
+import Skeleton from 'react-loading-skeleton'
+
+export const BlogPostSkeleton: React.FC = () => {
+  return (
+    <div 
+      className="blog-post-card"
+      style={{ 
+        textDecoration: 'none',
+        color: 'inherit',
+        display: 'block'
+      }}
+      aria-hidden="true"
+    >
+      <div className="blog-post-card-image">
+        <Skeleton height={200} style={{ display: 'block' }} />
+      </div>
+      <div className="blog-post-card-content">
+        <Skeleton 
+          height={24} 
+          width="85%" 
+          style={{ marginBottom: '0.75rem' }} 
+          className="blog-post-card-title"
+        />
+        <Skeleton 
+          count={2} 
+          style={{ marginBottom: '0.5rem' }} 
+          className="blog-post-card-summary"
+        />
+        <div className="blog-post-card-meta" style={{ display: 'flex', gap: '1rem' }}>
+          <span className="blog-post-card-author" style={{ display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
+            <Skeleton width={100} height={14} />
+          </span>
+          <span className="blog-post-card-date" style={{ display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
+            <Skeleton width={80} height={14} />
+          </span>
+        </div>
+      </div>
+    </div>
+  )
+}
+

src/components/Skeletons/BookmarkSkeleton.tsx

@@ -0,0 +1,80 @@
+import React from 'react'
+import Skeleton from 'react-loading-skeleton'
+import { ViewMode } from '../Bookmarks'
+
+interface BookmarkSkeletonProps {
+  viewMode: ViewMode
+}
+
+export const BookmarkSkeleton: React.FC<BookmarkSkeletonProps> = ({ viewMode }) => {
+  if (viewMode === 'compact') {
+    return (
+      <div 
+        className="bookmark-item-compact" 
+        style={{ padding: '0.75rem', marginBottom: '0.5rem' }}
+        aria-hidden="true"
+      >
+        <div style={{ display: 'flex', gap: '0.75rem', alignItems: 'flex-start' }}>
+          <Skeleton width={40} height={40} />
+          <div style={{ flex: 1, minWidth: 0 }}>
+            <Skeleton width="80%" height={16} style={{ marginBottom: '0.25rem' }} />
+            <Skeleton width="60%" height={14} />
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  if (viewMode === 'cards') {
+    return (
+      <div 
+        className="bookmark-card" 
+        style={{ 
+          borderRadius: '8px', 
+          overflow: 'hidden',
+          backgroundColor: 'var(--color-bg-elevated)',
+          marginBottom: '1rem'
+        }}
+        aria-hidden="true"
+      >
+        <Skeleton height={160} style={{ display: 'block' }} />
+        <div style={{ padding: '1rem' }}>
+          <Skeleton height={20} width="90%" style={{ marginBottom: '0.5rem' }} />
+          <Skeleton count={2} style={{ marginBottom: '0.5rem' }} />
+          <div style={{ display: 'flex', gap: '0.5rem', marginTop: '0.75rem' }}>
+            <Skeleton width={80} height={14} />
+            <Skeleton width={60} height={14} />
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  // large view
+  return (
+    <div 
+      className="bookmark-large" 
+      style={{ 
+        marginBottom: '1.5rem',
+        borderRadius: '8px',
+        overflow: 'hidden',
+        backgroundColor: 'var(--color-bg-elevated)'
+      }}
+      aria-hidden="true"
+    >
+      <Skeleton height={240} style={{ display: 'block' }} />
+      <div style={{ padding: '1.5rem' }}>
+        <Skeleton height={24} width="85%" style={{ marginBottom: '0.75rem' }} />
+        <Skeleton count={3} style={{ marginBottom: '0.5rem' }} />
+        <div style={{ display: 'flex', gap: '1rem', marginTop: '1rem' }}>
+          <Skeleton circle width={32} height={32} />
+          <div style={{ flex: 1 }}>
+            <Skeleton width={120} height={14} style={{ marginBottom: '0.25rem' }} />
+            <Skeleton width={100} height={12} />
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}
+

src/components/Skeletons/ContentSkeleton.tsx

@@ -0,0 +1,66 @@
+import React from 'react'
+import Skeleton from 'react-loading-skeleton'
+
+export const ContentSkeleton: React.FC = () => {
+  return (
+    <div 
+      className="reader-content"
+      style={{ 
+        maxWidth: '900px',
+        margin: '0 auto',
+        padding: '2rem 1rem'
+      }}
+      aria-hidden="true"
+    >
+      {/* Title */}
+      <Skeleton 
+        height={48} 
+        width="90%" 
+        style={{ marginBottom: '1rem' }} 
+      />
+      
+      {/* Byline / Meta */}
+      <div style={{ display: 'flex', gap: '1rem', marginBottom: '2rem', alignItems: 'center' }}>
+        <Skeleton circle width={40} height={40} />
+        <div style={{ flex: 1 }}>
+          <Skeleton width={150} height={16} style={{ marginBottom: '0.25rem' }} />
+          <Skeleton width={200} height={14} />
+        </div>
+      </div>
+      
+      {/* Cover image */}
+      <Skeleton 
+        height={400} 
+        style={{ marginBottom: '2rem', display: 'block', borderRadius: '8px' }} 
+      />
+      
+      {/* Paragraphs */}
+      <div style={{ marginBottom: '1.5rem' }}>
+        <Skeleton count={3} style={{ marginBottom: '0.5rem' }} />
+        <Skeleton width="80%" />
+      </div>
+      
+      <div style={{ marginBottom: '1.5rem' }}>
+        <Skeleton count={4} style={{ marginBottom: '0.5rem' }} />
+        <Skeleton width="65%" />
+      </div>
+      
+      <div style={{ marginBottom: '1.5rem' }}>
+        <Skeleton count={3} style={{ marginBottom: '0.5rem' }} />
+        <Skeleton width="90%" />
+      </div>
+      
+      {/* Another image placeholder */}
+      <Skeleton 
+        height={300} 
+        style={{ marginBottom: '2rem', display: 'block', borderRadius: '8px' }} 
+      />
+      
+      <div style={{ marginBottom: '1.5rem' }}>
+        <Skeleton count={3} style={{ marginBottom: '0.5rem' }} />
+        <Skeleton width="75%" />
+      </div>
+    </div>
+  )
+}
+

src/components/Skeletons/HighlightSkeleton.tsx

@@ -0,0 +1,36 @@
+import React from 'react'
+import Skeleton from 'react-loading-skeleton'
+
+export const HighlightSkeleton: React.FC = () => {
+  return (
+    <div 
+      className="highlight-item"
+      style={{ 
+        padding: '1rem',
+        marginBottom: '0.75rem',
+        borderRadius: '8px',
+        backgroundColor: 'var(--color-bg-elevated)'
+      }}
+      aria-hidden="true"
+    >
+      {/* Author line with avatar */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: '0.5rem', marginBottom: '0.75rem' }}>
+        <Skeleton circle width={24} height={24} />
+        <Skeleton width={120} height={14} />
+        <Skeleton width={60} height={12} style={{ marginLeft: 'auto' }} />
+      </div>
+      
+      {/* Highlight content */}
+      <div style={{ marginBottom: '0.5rem' }}>
+        <Skeleton count={2} style={{ marginBottom: '0.25rem' }} />
+        <Skeleton width="70%" />
+      </div>
+      
+      {/* Citation/context */}
+      <div style={{ marginTop: '0.75rem' }}>
+        <Skeleton width="90%" height={12} />
+      </div>
+    </div>
+  )
+}
+

src/components/Skeletons/SkeletonThemeProvider.tsx

@@ -0,0 +1,49 @@
+import React, { useEffect, useState } from 'react'
+import { SkeletonTheme } from 'react-loading-skeleton'
+
+interface SkeletonThemeProviderProps {
+  children: React.ReactNode
+}
+
+export const SkeletonThemeProvider: React.FC<SkeletonThemeProviderProps> = ({ children }) => {
+  const [colors, setColors] = useState({
+    baseColor: '#27272a',
+    highlightColor: '#52525b'
+  })
+
+  useEffect(() => {
+    const updateColors = () => {
+      const rootStyles = getComputedStyle(document.documentElement)
+      const baseColor = rootStyles.getPropertyValue('--color-bg-elevated').trim() || '#27272a'
+      const highlightColor = rootStyles.getPropertyValue('--color-border-subtle').trim() || '#52525b'
+      
+      setColors({ baseColor, highlightColor })
+    }
+
+    // Initial update
+    updateColors()
+
+    // Watch for theme changes via MutationObserver
+    const observer = new MutationObserver((mutations) => {
+      mutations.forEach((mutation) => {
+        if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
+          updateColors()
+        }
+      })
+    })
+
+    observer.observe(document.documentElement, {
+      attributes: true,
+      attributeFilter: ['class']
+    })
+
+    return () => observer.disconnect()
+  }, [])
+
+  return (
+    <SkeletonTheme baseColor={colors.baseColor} highlightColor={colors.highlightColor}>
+      {children}
+    </SkeletonTheme>
+  )
+}
+

src/components/Skeletons/index.ts

@@ -0,0 +1,6 @@
+export { SkeletonThemeProvider } from './SkeletonThemeProvider'
+export { BookmarkSkeleton } from './BookmarkSkeleton'
+export { BlogPostSkeleton } from './BlogPostSkeleton'
+export { HighlightSkeleton } from './HighlightSkeleton'
+export { ContentSkeleton } from './ContentSkeleton'
+

src/index.css

@@ -13,6 +13,7 @@
 @import './styles/components/settings.css';
 @import './styles/components/me.css';
 @import './styles/components/pull-to-refresh.css';
+@import './styles/components/skeletons.css';
 @import './styles/utils/animations.css';
 @import './styles/utils/utilities.css';
 @import './styles/utils/legacy.css';

src/main.tsx

@@ -3,6 +3,7 @@ import ReactDOM from 'react-dom/client'
 import App from './App.tsx'
 import './styles/tailwind.css'
 import './index.css'
+import 'react-loading-skeleton/dist/skeleton.css'
 
 // Register Service Worker for PWA functionality
 if ('serviceWorker' in navigator) {

src/styles/components/skeletons.css

@@ -0,0 +1,35 @@
+/* Skeleton loading animations - respects prefers-reduced-motion */
+@media (prefers-reduced-motion: reduce) {
+  .react-loading-skeleton {
+    animation: none !important;
+  }
+}
+
+/* Ensure skeletons have proper border radius to match design */
+.react-loading-skeleton {
+  border-radius: 4px;
+  line-height: 1.2;
+}
+
+/* Image skeleton aspect ratio boxes to prevent CLS */
+.blog-post-card-image .react-loading-skeleton,
+.bookmark-card .react-loading-skeleton:first-child {
+  aspect-ratio: 16 / 9;
+}
+
+/* Skeleton spacing adjustments */
+.highlights-list .react-loading-skeleton,
+.bookmarks-list .react-loading-skeleton {
+  margin-bottom: 0.5rem;
+}
+
+/* Ensure skeletons inherit theme colors properly */
+.react-loading-skeleton::after {
+  background: linear-gradient(
+    90deg,
+    transparent,
+    var(--color-border-subtle, rgba(255, 255, 255, 0.05)),
+    transparent
+  );
+}
+