feat: add paragraph alignment setting

- Add paragraphAlignment setting (left/justify) to UserSettings interface
- Add UI control with icon buttons in ReadingDisplaySettings
- Apply alignment via CSS variable to reader content and preview
- Default to left-aligned to maintain current behavior
- Keep headings always left-aligned for better readability

src/components/Settings.tsx

@@ -35,6 +35,7 @@ const DEFAULT_SETTINGS: UserSettings = {
   zapSplitAuthorWeight: 50,
   useLocalRelayAsCache: true,
   rebroadcastToAllRelays: false,
+  paragraphAlignment: 'left',
 }
 
 interface SettingsProps {

src/components/Settings/ReadingDisplaySettings.tsx

@@ -1,5 +1,5 @@
 import React from 'react'
-import { faHighlighter, faUnderline, faNetworkWired, faUserGroup, faUser } from '@fortawesome/free-solid-svg-icons'
+import { faHighlighter, faUnderline, faNetworkWired, faUserGroup, faUser, faAlignLeft, faAlignJustify } from '@fortawesome/free-solid-svg-icons'
 import { UserSettings } from '../../services/settingsService'
 import IconButton from '../IconButton'
 import ColorPicker from '../ColorPicker'
@@ -48,6 +48,26 @@ const ReadingDisplaySettings: React.FC<ReadingDisplaySettingsProps> = ({ setting
         </div>
       </div>
 
+      <div className="setting-group setting-inline">
+        <label>Paragraph Alignment</label>
+        <div className="setting-buttons">
+          <IconButton 
+            icon={faAlignLeft} 
+            onClick={() => onUpdate({ paragraphAlignment: 'left' })} 
+            title="Left aligned" 
+            ariaLabel="Left aligned" 
+            variant={(settings.paragraphAlignment || 'left') === 'left' ? 'primary' : 'ghost'} 
+          />
+          <IconButton 
+            icon={faAlignJustify} 
+            onClick={() => onUpdate({ paragraphAlignment: 'justify' })} 
+            title="Justified" 
+            ariaLabel="Justified" 
+            variant={settings.paragraphAlignment === 'justify' ? 'primary' : 'ghost'} 
+          />
+        </div>
+      </div>
+
       <div className="setting-group setting-inline">
         <label>Highlight Style</label>
         <div className="setting-buttons">
@@ -157,7 +177,8 @@ const ReadingDisplaySettings: React.FC<ReadingDisplaySettingsProps> = ({ setting
           style={{ 
             fontFamily: previewFontFamily,
             fontSize: `${settings.fontSize || 21}px`,
-            '--highlight-rgb': hexToRgb(settings.highlightColor || '#ffff00')
+            '--highlight-rgb': hexToRgb(settings.highlightColor || '#ffff00'),
+            '--paragraph-alignment': settings.paragraphAlignment || 'left'
           } as React.CSSProperties}
         >
           <h3>The Quick Brown Fox</h3>

src/hooks/useSettings.ts

@@ -73,6 +73,9 @@ export function useSettings({ relayPool, eventStore, pubkey, accountManager }: U
       root.setProperty('--highlight-color-friends', settings.highlightColorFriends || '#f97316')
       root.setProperty('--highlight-color-nostrverse', settings.highlightColorNostrverse || '#9333ea')
       
+      // Set paragraph alignment
+      root.setProperty('--paragraph-alignment', settings.paragraphAlignment || 'left')
+      
       console.log('✅ All styles applied')
     }
     

src/services/settingsService.ts

@@ -52,6 +52,8 @@ export interface UserSettings {
   theme?: 'dark' | 'light' | 'system' // default: system
   darkColorTheme?: 'black' | 'midnight' | 'charcoal' // default: midnight
   lightColorTheme?: 'paper-white' | 'sepia' | 'ivory' // default: sepia
+  // Reading settings
+  paragraphAlignment?: 'left' | 'justify' // default: left
 }
 
 export async function loadSettings(

src/styles/components/forms.css

@@ -41,6 +41,7 @@
 .preview-content p { 
   margin: 0.75rem 0;
   word-wrap: break-word;
+  text-align: var(--paragraph-alignment, left);
 }
 .setting-select { width: 100%; padding: 0.5rem; background: var(--color-bg-elevated); border: 1px solid var(--color-border-subtle); border-radius: 4px; color: var(--color-text); font-size: 1rem; }
 .setting-inline .setting-select { width: auto; min-width: 200px; flex: 1; }

src/styles/components/reader.css

@@ -37,9 +37,22 @@
 .highlight-indicator svg { font-size: 0.875rem; }
 .reader-html { color: var(--color-text); line-height: 1.6; word-wrap: break-word; overflow-wrap: break-word; word-break: break-word; font-family: var(--reading-font); font-size: var(--reading-font-size); }
 .reader-markdown { color: var(--color-text); line-height: 1.7; font-family: var(--reading-font); font-size: var(--reading-font-size); }
-/* Ensure content is left-aligned even if source markup uses center */
-.reader .reader-html *, .reader .reader-markdown * { text-align: left !important; font-family: inherit !important; }
-.reader center, .reader [align="center"] { text-align: left !important; }
+/* Ensure font inheritance */
+.reader .reader-html *, .reader .reader-markdown * { font-family: inherit !important; }
+/* Apply paragraph alignment from settings */
+.reader .reader-html p,
+.reader .reader-markdown p,
+.reader .reader-html div,
+.reader .reader-markdown div,
+.reader .reader-html li,
+.reader .reader-markdown li,
+.reader .reader-html blockquote,
+.reader .reader-markdown blockquote { text-align: var(--paragraph-alignment, left); }
+/* Override centered content with user preference */
+.reader center, .reader [align="center"] { text-align: var(--paragraph-alignment, left) !important; }
+/* Keep headings left-aligned */
+.reader .reader-html h1, .reader .reader-html h2, .reader .reader-html h3, .reader .reader-html h4, .reader .reader-html h5, .reader .reader-html h6,
+.reader .reader-markdown h1, .reader .reader-markdown h2, .reader .reader-markdown h3, .reader .reader-markdown h4, .reader .reader-markdown h5, .reader .reader-markdown h6 { text-align: left !important; }
 /* Tame images from external content */
 .reader .reader-html img, .reader .reader-markdown img { max-width: 100%; max-height: 70vh; height: auto; width: auto; display: block; margin: 0.75rem 0; border-radius: 6px; }
 /* Headlines with Tailwind typography */