feat: implémenter système thèmes complet avec 14 thèmes prédéfinis (DEFAULT/GitHub/Linear/Spotify/Notion/Discord/Dracula/OneDark/TokyoNight/Nord/NightOwl/Anthracite/Cyberpunk/NavyElegance/Earthy), panel gestion thèmes dans tools.html avec grid previews et sélection interactive, synchronisation bidirectionnelle via bookmark shaarit_config (fetch/save JSON config), enforcement dark-only pour thèmes sans support light mode (disable toggle sidebar, auto-force dark), ajout data-theme-id attribute

shaarli-pro/css/themes.css

@@ -0,0 +1,469 @@
+/* === Système de design ShaarIt - 16 Thèmes === */
+
+/* Typographie globale (s'applique à tous) */
+:root {
+  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+  --text-xs: 0.75rem;
+  --text-sm: 0.875rem;
+  --text-base: 1rem;
+  --text-lg: 1.125rem;
+  --text-xl: 1.25rem;
+  --text-2xl: 1.5rem;
+  
+  --radius-xs: 4px;
+  --radius-sm: 8px;
+  --radius-md: 12px;
+  --radius-lg: 16px;
+  --radius-xl: 28px;
+  --radius-full: 9999px;
+  
+  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
+  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
+  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
+}
+
+/* 1. DEFAULT (ShaarIt) - DARK (Par défaut si pas de light) */
+:root, :root[data-theme-id="DEFAULT"] {
+  --primary: #00D4AA;
+  --on-primary: #0A1628;
+  --primary-container: #243447;
+  --on-primary-container: #4EECC4;
+  
+  --secondary: #0EA5E9;
+  --on-secondary: #0A1628;
+  --secondary-container: #2A3F54;
+  --on-secondary-container: #38BDF8;
+  
+  --tertiary: #4EECC4;
+  --on-tertiary: #0A1628;
+  
+  --background: #0A1628;
+  --on-background: #E2E8F0;
+  
+  --surface: #0D1B2A;
+  --on-surface: #E2E8F0;
+  
+  --surface-variant: #1B2838;
+  --on-surface-variant: #94A3B8;
+  
+  --outline: #64748B;
+  --outline-variant: #2A3F54;
+  
+  --error: #EF4444;
+  --on-error: #FFFFFF;
+  --error-container: #450A0A;
+  --on-error-container: #FCA5A5;
+}
+
+/* 1. DEFAULT (ShaarIt) - LIGHT */
+:root[data-theme="light"][data-theme-id="DEFAULT"] {
+  --primary: #006B5A;
+  --on-primary: #FFFFFF;
+  --primary-container: #B2F5E6;
+  --on-primary-container: #00201A;
+  
+  --secondary: #0077B6;
+  --on-secondary: #FFFFFF;
+  --secondary-container: #D0E8FF;
+  --on-secondary-container: #001E36;
+  
+  --tertiary: #00897B;
+  --on-tertiary: #FFFFFF;
+  
+  --background: #F8FAFA;
+  --on-background: #1A1C1E;
+  
+  --surface: #FFFFFF;
+  --on-surface: #1A1C1E;
+  
+  --surface-variant: #E7F0EE;
+  --on-surface-variant: #404944;
+  
+  --outline: #707974;
+  --outline-variant: #C0C9C4;
+  
+  --error: #BA1A1A;
+  --on-error: #FFFFFF;
+  --error-container: #FFDAD6;
+  --on-error-container: #410002;
+}
+
+/* 2. GITHUB - DARK */
+:root[data-theme-id="GITHUB"] {
+  --primary: #58A6FF;
+  --on-primary: #0D1117;
+  --primary-container: #1F2937;
+  --on-primary-container: #79C0FF;
+  
+  --secondary: #3FB950;
+  --on-secondary: #0D1117;
+  --secondary-container: #1C2D22;
+  --on-secondary-container: #56D364;
+  
+  --tertiary: #D2A8FF;
+  --on-tertiary: #0D1117;
+  
+  --background: #0D1117;
+  --on-background: #C9D1D9;
+  
+  --surface: #161B22;
+  --on-surface: #C9D1D9;
+  
+  --surface-variant: #21262D;
+  --on-surface-variant: #8B949E;
+  
+  --outline: #30363D;
+  --outline-variant: #21262D;
+  
+  --error: #F85149;
+  --on-error: #FFFFFF;
+  --error-container: #490202;
+  --on-error-container: #FFA198;
+}
+
+/* 2. GITHUB - LIGHT */
+:root[data-theme="light"][data-theme-id="GITHUB"] {
+  --primary: #0969DA;
+  --on-primary: #FFFFFF;
+  --primary-container: #DDF4FF;
+  --on-primary-container: #0A3069;
+  
+  --secondary: #1A7F37;
+  --on-secondary: #FFFFFF;
+  --secondary-container: #DAFBE1;
+  --on-secondary-container: #0E4F1F;
+  
+  --tertiary: #8250DF;
+  --on-tertiary: #FFFFFF;
+  
+  --background: #FFFFFF;
+  --on-background: #1F2328;
+  
+  --surface: #F6F8FA;
+  --on-surface: #1F2328;
+  
+  --surface-variant: #EAEEF2;
+  --on-surface-variant: #656D76;
+  
+  --outline: #D0D7DE;
+  --outline-variant: #E1E4E8;
+  
+  --error: #CF222E;
+  --on-error: #FFFFFF;
+  --error-container: #FFEBE9;
+  --on-error-container: #82071E;
+}
+
+/* 3. LINEAR - DARK */
+:root[data-theme-id="LINEAR"] {
+  --primary: #5E6AD2;
+  --on-primary: #FFFFFF;
+  --primary-container: #2A2B3D;
+  --on-primary-container: #8B8FE8;
+  
+  --secondary: #4EA7FC;
+  --on-secondary: #12131A;
+  --secondary-container: #1E2A3A;
+  --on-secondary-container: #7DC4FF;
+  
+  --tertiary: #E8A861;
+  --on-tertiary: #12131A;
+  
+  --background: #12131A;
+  --on-background: #EEEFF2;
+  
+  --surface: #1B1C24;
+  --on-surface: #EEEFF2;
+  
+  --surface-variant: #22232E;
+  --on-surface-variant: #8A8F98;
+  
+  --outline: #3B3D4A;
+  --outline-variant: #2A2B3D;
+  
+  --error: #EB5757;
+  --on-error: #FFFFFF;
+  --error-container: #3D1515;
+  --on-error-container: #FF9B9B;
+}
+
+/* 4. SPOTIFY - DARK */
+:root[data-theme-id="SPOTIFY"] {
+  --primary: #1DB954;
+  --on-primary: #000000;
+  --primary-container: #1A3D27;
+  --on-primary-container: #1ED760;
+  
+  --secondary: #1DB954;
+  --on-secondary: #000000;
+  
+  --tertiary: #B3B3B3;
+  --on-tertiary: #000000;
+  
+  --background: #000000;
+  --on-background: #FFFFFF;
+  
+  --surface: #121212;
+  --on-surface: #FFFFFF;
+  
+  --surface-variant: #1A1A1A;
+  --on-surface-variant: #B3B3B3;
+  
+  --outline: #333333;
+  --outline-variant: #282828;
+  
+  --error: #E22134;
+}
+
+/* 5. NOTION - DARK */
+:root[data-theme-id="NOTION"] {
+  --primary: #529CCA;
+  --on-primary: #191919;
+  
+  --secondary: #E07A5F;
+  --on-secondary: #191919;
+  
+  --tertiary: #81B29A;
+  --on-tertiary: #191919;
+  
+  --background: #191919;
+  --on-background: #E0E0E0;
+  
+  --surface: #202020;
+  --on-surface: #E0E0E0;
+  
+  --surface-variant: #2B2B2B;
+  --on-surface-variant: #9B9B9B;
+  
+  --outline: #3E3E3E;
+}
+
+/* 6. DISCORD - DARK */
+:root[data-theme-id="DISCORD"] {
+  --primary: #5865F2;
+  --on-primary: #FFFFFF;
+  
+  --secondary: #57F287;
+  --on-secondary: #1E2124;
+  
+  --tertiary: #FEE75C;
+  --on-tertiary: #1E2124;
+  
+  --background: #313338;
+  --on-background: #DBDEE1;
+  
+  --surface: #2B2D31;
+  --on-surface: #DBDEE1;
+  
+  --surface-variant: #383A40;
+  --on-surface-variant: #B5BAC1;
+  
+  --outline: #4E5058;
+}
+
+/* 7. DRACULA - DARK */
+:root[data-theme-id="DRACULA"] {
+  --primary: #BD93F9;
+  --on-primary: #21222C;
+  
+  --secondary: #50FA7B;
+  --on-secondary: #21222C;
+  
+  --tertiary: #FF79C6;
+  --on-tertiary: #21222C;
+  
+  --background: #282A36;
+  --on-background: #F8F8F2;
+  
+  --surface: #21222C;
+  --on-surface: #F8F8F2;
+  
+  --surface-variant: #343746;
+  --on-surface-variant: #BFBFBF;
+  
+  --outline: #6272A4;
+}
+
+/* 8. ONE DARK PRO - DARK */
+:root[data-theme-id="ONE_DARK_PRO"] {
+  --primary: #61AFEF;
+  --on-primary: #1E2127;
+  
+  --secondary: #98C379;
+  --on-secondary: #1E2127;
+  
+  --tertiary: #E5C07B;
+  --on-tertiary: #1E2127;
+  
+  --background: #282C34;
+  --on-background: #ABB2BF;
+  
+  --surface: #21252B;
+  --on-surface: #ABB2BF;
+  
+  --surface-variant: #2C313A;
+  --on-surface-variant: #8B929E;
+  
+  --outline: #3E4452;
+}
+
+/* 9. TOKYO NIGHT - DARK */
+:root[data-theme-id="TOKYO_NIGHT"] {
+  --primary: #7AA2F7;
+  --on-primary: #1A1B26;
+  
+  --secondary: #9ECE6A;
+  --on-secondary: #1A1B26;
+  
+  --tertiary: #BB9AF7;
+  --on-tertiary: #1A1B26;
+  
+  --background: #1A1B26;
+  --on-background: #C0CAF5;
+  
+  --surface: #16171F;
+  --on-surface: #C0CAF5;
+  
+  --surface-variant: #24283B;
+  --on-surface-variant: #9AA5CE;
+  
+  --outline: #3B4261;
+}
+
+/* 10. NORD - DARK */
+:root[data-theme-id="NORD"] {
+  --primary: #88C0D0;
+  --on-primary: #2E3440;
+  
+  --secondary: #A3BE8C;
+  --on-secondary: #2E3440;
+  
+  --tertiary: #EBCB8B;
+  --on-tertiary: #2E3440;
+  
+  --background: #2E3440;
+  --on-background: #ECEFF4;
+  
+  --surface: #3B4252;
+  --on-surface: #D8DEE9;
+  
+  --surface-variant: #434C5E;
+  --on-surface-variant: #D8DEE9;
+  
+  --outline: #4C566A;
+}
+
+/* 11. NIGHT OWL - DARK */
+:root[data-theme-id="NIGHT_OWL"] {
+  --primary: #7FDBCA;
+  --on-primary: #011627;
+  
+  --secondary: #ADDB67;
+  --on-secondary: #011627;
+  
+  --tertiary: #C792EA;
+  --on-tertiary: #011627;
+  
+  --background: #011627;
+  --on-background: #D6DEEB;
+  
+  --surface: #0B2942;
+  --on-surface: #D6DEEB;
+  
+  --surface-variant: #112B45;
+  --on-surface-variant: #9FAFC2;
+  
+  --outline: #1D3B58;
+}
+
+/* 12. ANTHRACITE - DARK */
+:root[data-theme-id="ANTHRACITE"] {
+  --primary: #BB86FC;
+  --on-primary: #121212;
+  
+  --secondary: #03DAC6;
+  --on-secondary: #121212;
+  
+  --tertiary: #CF6679;
+  --on-tertiary: #121212;
+  
+  --background: #121212;
+  --on-background: #E1E1E1;
+  
+  --surface: #1E1E1E;
+  --on-surface: #E1E1E1;
+  
+  --surface-variant: #2C2C2C;
+  --on-surface-variant: #AAAAAA;
+  
+  --outline: #3D3D3D;
+}
+
+/* 13. CYBERPUNK - DARK */
+:root[data-theme-id="CYBERPUNK"] {
+  --primary: #00FFFF;
+  --on-primary: #0A0A14;
+  
+  --secondary: #FF00FF;
+  --on-secondary: #0A0A14;
+  
+  --tertiary: #FFFF00;
+  --on-tertiary: #0A0A14;
+  
+  --background: #0A0A14;
+  --on-background: #E0E0F0;
+  
+  --surface: #12121E;
+  --on-surface: #E0E0F0;
+  
+  --surface-variant: #1A1A2E;
+  --on-surface-variant: #A0A0C0;
+  
+  --outline: #2A2A44;
+}
+
+/* 14. NAVY ELEGANCE - DARK */
+:root[data-theme-id="NAVY_ELEGANCE"] {
+  --primary: #D4AF37;
+  --on-primary: #0B1929;
+  
+  --secondary: #C0C0C0;
+  --on-secondary: #0B1929;
+  
+  --tertiary: #87CEEB;
+  --on-tertiary: #0B1929;
+  
+  --background: #0B1929;
+  --on-background: #E0E4EA;
+  
+  --surface: #0F2035;
+  --on-surface: #E0E4EA;
+  
+  --surface-variant: #162A42;
+  --on-surface-variant: #A0AABB;
+  
+  --outline: #1E3550;
+}
+
+/* 15. EARTHY - DARK */
+:root[data-theme-id="EARTHY"] {
+  --primary: #81C784;
+  --on-primary: #1A1510;
+  
+  --secondary: #D4A574;
+  --on-secondary: #1A1510;
+  
+  --tertiary: #A5D6A7;
+  --on-tertiary: #1A1510;
+  
+  --background: #1A1510;
+  --on-background: #E0D8CF;
+  
+  --surface: #231E18;
+  --on-surface: #E0D8CF;
+  
+  --surface-variant: #2E2720;
+  --on-surface-variant: #ADA49A;
+  
+  --outline: #3D342B;
+}

shaarli-pro/includes.html

@@ -10,10 +10,22 @@
 <!-- Prevent dark mode flash (FOUC) - must run before CSS loads -->
 <script>
 (function() {
-    var t = localStorage.getItem('theme') ||
+    var themeMode = localStorage.getItem('theme') ||
         (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
-    if (t === 'dark') {
+    var themeId = localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
+
+    // Disable light mode for dark-only themes
+    var darkOnlyThemes = ['LINEAR', 'SPOTIFY', 'NOTION', 'DISCORD', 'DRACULA', 'ONE_DARK_PRO', 'TOKYO_NIGHT', 'NORD', 'NIGHT_OWL', 'ANTHRACITE', 'CYBERPUNK', 'NAVY_ELEGANCE', 'EARTHY'];
+    if (darkOnlyThemes.indexOf(themeId) !== -1) {
+        themeMode = 'dark';
+    }
+
+    if (themeMode === 'dark') {
         document.documentElement.setAttribute('data-theme', 'dark');
+    }
+    document.documentElement.setAttribute('data-theme-id', themeId);
+    
+    if (themeMode === 'dark') {
         document.addEventListener('DOMContentLoaded', function() {
             var mc = document.querySelector('meta[name="theme-color"]');
             if (mc) mc.setAttribute('content', '#1e293b');
@@ -23,6 +35,7 @@
 </script>
 
 <!-- Professional Theme CSS -->
+<link type="text/css" rel="stylesheet" href="{$base_path}/{function="ltrim($asset_path, '/')"}/css/themes.css?v=1.0.0" />
 <link type="text/css" rel="stylesheet" href="{$base_path}/{function="ltrim($asset_path, '/')"}/css/style.css?v=1.0.4" />
 <link type="text/css" rel="stylesheet" href="{$base_path}/{function="ltrim($asset_path, '/')"}/css/custom_views.css?v=1.0.5" />
 {if="$pageName=='editlink' || $pageName=='addlink' || $pageName=='editlinkbatch'"}

shaarli-pro/js/script.js

@@ -36,12 +36,26 @@ document.addEventListener('DOMContentLoaded', () => {
     const themeIconLight = document.getElementById('theme-icon-light');
     const themeLabelSpan = document.querySelector('.theme-toggle-label span');
 
+    function checkThemeRestrictions() {
+        const themeId = localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
+        const darkOnlyThemes = ['LINEAR', 'SPOTIFY', 'NOTION', 'DISCORD', 'DRACULA', 'ONE_DARK_PRO', 'TOKYO_NIGHT', 'NORD', 'NIGHT_OWL', 'ANTHRACITE', 'CYBERPUNK', 'NAVY_ELEGANCE', 'EARTHY'];
+        return darkOnlyThemes.indexOf(themeId) !== -1;
+    }
+
     function updateTheme(theme) {
+        // Enforce dark mode if the theme only supports dark
+        if (checkThemeRestrictions()) {
+            theme = 'dark';
+        }
+        
         document.documentElement.setAttribute('data-theme', theme);
         localStorage.setItem('theme', theme);
 
         if (themeCheckbox) {
             themeCheckbox.checked = theme === 'dark';
+            // Disable the checkbox if restricted to dark mode
+            themeCheckbox.disabled = checkThemeRestrictions();
+            themeCheckbox.closest('.theme-switch').style.opacity = themeCheckbox.disabled ? '0.5' : '1';
         }
         if (themeIconLight) {
             themeIconLight.className = theme === 'dark' ? 'mdi mdi-weather-night' : 'mdi mdi-weather-sunny';
@@ -51,13 +65,19 @@ document.addEventListener('DOMContentLoaded', () => {
         }
     }
 
+    // Handle themeChanged event fired by tools.html
+    window.addEventListener('themeChanged', () => {
+        updateTheme(localStorage.getItem('theme') || 'dark');
+    });
+
     // Init Theme
-    const savedTheme = localStorage.getItem('theme') ||
+    let savedTheme = localStorage.getItem('theme') ||
         (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
     updateTheme(savedTheme);
 
     if (themeCheckbox) {
         themeCheckbox.addEventListener('change', () => {
+            if (checkThemeRestrictions()) return; // Extra safety
             const next = themeCheckbox.checked ? 'dark' : 'light';
             updateTheme(next);
         });
@@ -3287,4 +3307,45 @@ document.addEventListener('DOMContentLoaded', () => {
         updateSummary();
         renderDays();
     })();
+
+    // ===== Sync Theme from Bookmark in Background =====
+    setTimeout(() => {
+        // Run sync after a slight delay to avoid blocking initial load
+        if (!window.shaarli || !window.shaarli.basePath) return;
+        
+        fetch(window.shaarli.basePath + '/?searchtags=shaarit_config')
+            .then(res => res.text())
+            .then(text => {
+                const parser = new DOMParser();
+                const doc = parser.parseFromString(text, 'text/html');
+                const linkCard = doc.querySelector('.linklist-item');
+                if (linkCard) {
+                    const descEl = linkCard.querySelector('.link-description p');
+                    if (descEl) {
+                        try {
+                            const config = JSON.parse(descEl.textContent.trim());
+                            const remoteThemeId = config.theme;
+                            const localThemeId = localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
+                            
+                            if (remoteThemeId && remoteThemeId !== localThemeId) {
+                                localStorage.setItem('shaarit_theme_id', remoteThemeId);
+                                document.documentElement.setAttribute('data-theme-id', remoteThemeId);
+                                
+                                // Enforce light/dark constraints based on new theme
+                                const darkOnlyThemes = ['LINEAR', 'SPOTIFY', 'NOTION', 'DISCORD', 'DRACULA', 'ONE_DARK_PRO', 'TOKYO_NIGHT', 'NORD', 'NIGHT_OWL', 'ANTHRACITE', 'CYBERPUNK', 'NAVY_ELEGANCE', 'EARTHY'];
+                                if (darkOnlyThemes.indexOf(remoteThemeId) !== -1) {
+                                    localStorage.setItem('theme', 'dark');
+                                    document.documentElement.setAttribute('data-theme', 'dark');
+                                }
+                                
+                                window.dispatchEvent(new Event('themeChanged'));
+                                console.log('[shaarit] Theme synced from bookmark:', remoteThemeId);
+                            }
+                        } catch(e) {}
+                    }
+                }
+            })
+            .catch(err => console.log('[shaarit] Background theme sync failed:', err));
+    }, 1500);
+
 });

shaarli-pro/tools.html

@@ -14,6 +14,16 @@
                     <div class="card">
                         <div class="card-header">{'Settings'|t}</div>
                         <div class="list-group">
+                            <a class="list-group-item list-group-item-action ripple" href="#" id="themes-panel-toggle">
+                                <div class="list-sortable-handle">
+                                    <i class="mdi mdi-palette"></i>
+                                </div>
+                                <div class="list-group-item-content">
+                                    <div class="list-group-item-label">{'Themes'|t}</div>
+                                    <div class="list-group-item-sublabel">{'Choose application visual theme'|t}</div>
+                                </div>
+                                <i class="mdi mdi-chevron-right"></i>
+                            </a>
                             <a class="list-group-item list-group-item-action ripple" href="{$base_path}/admin/configure">
                                 <div class="list-sortable-handle">
                                     <i class="mdi mdi-cog"></i>
@@ -101,6 +111,34 @@
                 </div>
             </div>
 
+            <!-- Themes Management Panel -->
+            <div class="row" id="themes-panel" style="display: none;">
+                <div class="col-md-8 col-md-offset-2">
+                    <div class="card themes-card">
+                        <div class="card-header">
+                            <span><i class="mdi mdi-palette"></i> {'Application Themes'|t}</span>
+                            <button type="button" class="btn btn-sm btn-secondary" id="close-themes-panel">
+                                <i class="mdi mdi-close"></i>
+                            </button>
+                        </div>
+                        <div class="card-body">
+                            <div class="themes-info">
+                                <i class="mdi mdi-information-outline"></i>
+                                <span>{'Choose your preferred visual theme. The theme configuration will be synchronized across your devices via the shaarit_config bookmark.'|t}</span>
+                            </div>
+
+                            <div class="themes-grid" id="themes-grid">
+                                <!-- Filled by JavaScript -->
+                            </div>
+
+                            <div class="themes-actions">
+                                <span id="theme-save-status" class="save-status"></span>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
             <!-- Hidden Tags Management Panel -->
             <div class="row" id="hidden-tags-panel" style="display: none;">
                 <div class="col-md-8 col-md-offset-2">
@@ -249,6 +287,111 @@
         {include="page.footer"}
 
         <style>
+            /* Themes Panel Styles */
+            .themes-card .card-header {
+                display: flex;
+                justify-content: space-between;
+                align-items: center;
+            }
+
+            .themes-info {
+                display: flex;
+                gap: 0.75rem;
+                padding: 1rem;
+                background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
+                border: 1px solid rgba(0, 212, 170, 0.2);
+                border-radius: 0.75rem;
+                margin-bottom: 1.5rem;
+            }
+
+            .themes-info i {
+                font-size: 1.25rem;
+                color: var(--primary);
+                flex-shrink: 0;
+            }
+
+            .themes-info span {
+                font-size: 0.9rem;
+                color: var(--text-muted);
+                line-height: 1.5;
+            }
+
+            .themes-grid {
+                display: grid;
+                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
+                gap: 1rem;
+            }
+
+            .theme-item {
+                display: flex;
+                flex-direction: column;
+                align-items: center;
+                gap: 0.5rem;
+                padding: 1rem;
+                background: var(--bg-card);
+                border: 2px solid var(--border-light);
+                border-radius: 0.75rem;
+                cursor: pointer;
+                transition: all 0.2s ease;
+            }
+
+            .theme-item:hover {
+                border-color: rgba(0, 212, 170, 0.4);
+                transform: translateY(-2px);
+            }
+
+            .theme-item.active {
+                border-color: var(--primary);
+                background: rgba(var(--primary-rgb), 0.05);
+            }
+
+            .theme-preview {
+                width: 100%;
+                height: 80px;
+                border-radius: 0.5rem;
+                display: flex;
+                flex-direction: column;
+                overflow: hidden;
+                border: 1px solid var(--border-light);
+            }
+            
+            .theme-preview-top {
+                height: 30%;
+                background: var(--preview-primary);
+            }
+            
+            .theme-preview-bottom {
+                height: 70%;
+                background: var(--preview-bg);
+                display: flex;
+                align-items: center;
+                justify-content: center;
+            }
+            
+            .theme-preview-card {
+                width: 60%;
+                height: 50%;
+                background: var(--preview-surface);
+                border-radius: 4px;
+            }
+
+            .theme-name {
+                font-weight: 500;
+                font-size: 1rem;
+                color: var(--text-primary);
+                margin-top: 0.5rem;
+            }
+
+            .theme-desc {
+                font-size: 0.8rem;
+                color: var(--text-muted);
+                text-align: center;
+            }
+            
+            [data-theme="light"] .themes-info {
+                background: linear-gradient(135deg, rgba(0, 107, 90, 0.05) 0%, rgba(0, 119, 182, 0.05) 100%);
+            }
+
             /* Hidden Tags Panel Styles */
             .hidden-tags-card .card-header {
                 display: flex;
@@ -426,6 +569,177 @@
         </style>
 
         <script>
+            // Themes Management
+            (function() {
+                const THEMES = [
+                    { id: 'DEFAULT', name: 'ShaarIt', desc: 'Original theme', color: '#00D4AA', bg: '#0A1628', surface: '#0D1B2A', hasLight: true },
+                    { id: 'GITHUB', name: 'GitHub', desc: 'Soft contrast', color: '#58A6FF', bg: '#0D1117', surface: '#161B22', hasLight: true },
+                    { id: 'LINEAR', name: 'Linear', desc: 'Subtle gradients', color: '#5E6AD2', bg: '#12131A', surface: '#1B1C24', hasLight: false },
+                    { id: 'SPOTIFY', name: 'Spotify', desc: 'Pure black & green', color: '#1DB954', bg: '#000000', surface: '#121212', hasLight: false },
+                    { id: 'NOTION', name: 'Notion', desc: 'Clean reading', color: '#529CCA', bg: '#191919', surface: '#202020', hasLight: false },
+                    { id: 'DISCORD', name: 'Discord', desc: 'Community standard', color: '#5865F2', bg: '#313338', surface: '#2B2D31', hasLight: false },
+                    { id: 'DRACULA', name: 'Dracula', desc: 'Pink & purple accents', color: '#BD93F9', bg: '#282A36', surface: '#21222C', hasLight: false },
+                    { id: 'ONE_DARK_PRO', name: 'One Dark', desc: 'Atom inspired', color: '#61AFEF', bg: '#282C34', surface: '#21252B', hasLight: false },
+                    { id: 'TOKYO_NIGHT', name: 'Tokyo Night', desc: 'Neon blue', color: '#7AA2F7', bg: '#1A1B26', surface: '#16171F', hasLight: false },
+                    { id: 'NORD', name: 'Nord', desc: 'Arctic style', color: '#88C0D0', bg: '#2E3440', surface: '#3B4252', hasLight: false },
+                    { id: 'NIGHT_OWL', name: 'Night Owl', desc: 'Optimized for night', color: '#7FDBCA', bg: '#011627', surface: '#0B2942', hasLight: false },
+                    { id: 'ANTHRACITE', name: 'Anthracite', desc: 'Material dark', color: '#BB86FC', bg: '#121212', surface: '#1E1E1E', hasLight: false },
+                    { id: 'CYBERPUNK', name: 'Cyberpunk', desc: 'Vibrant neon', color: '#00FFFF', bg: '#0A0A14', surface: '#12121E', hasLight: false },
+                    { id: 'NAVY_ELEGANCE', name: 'Navy Élégance', desc: 'Deep blue & gold', color: '#D4AF37', bg: '#0B1929', surface: '#0F2035', hasLight: false },
+                    { id: 'EARTHY', name: 'Tons Terreux', desc: 'Organic feel', color: '#81C784', bg: '#1A1510', surface: '#231E18', hasLight: false }
+                ];
+
+                function getActiveTheme() {
+                    return localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
+                }
+                
+                function showSaveStatus() {
+                    const status = document.getElementById('theme-save-status');
+                    if (status) {
+                        status.textContent = 'Saved! Refreshing...';
+                        status.classList.add('show');
+                    }
+                }
+
+                function renderThemes() {
+                    const container = document.getElementById('themes-grid');
+                    if (!container) return;
+
+                    const activeTheme = getActiveTheme();
+                    
+                    container.innerHTML = THEMES.map(theme => `
+                        <div class="theme-item ${activeTheme === theme.id ? 'active' : ''}" data-theme-id="${theme.id}" data-has-light="${theme.hasLight}">
+                            <div class="theme-preview" style="--preview-primary: ${theme.color}; --preview-bg: ${theme.bg}; --preview-surface: ${theme.surface};">
+                                <div class="theme-preview-top"></div>
+                                <div class="theme-preview-bottom">
+                                    <div class="theme-preview-card"></div>
+                                </div>
+                            </div>
+                            <div class="theme-name">${theme.name}</div>
+                            <div class="theme-desc">${theme.desc}</div>
+                        </div>
+                    `).join('');
+
+                    container.querySelectorAll('.theme-item').forEach(item => {
+                        item.addEventListener('click', function() {
+                            const themeId = this.dataset.themeId;
+                            const hasLight = this.dataset.hasLight === 'true';
+                            
+                            // Update UI immediately
+                            container.querySelectorAll('.theme-item').forEach(el => el.classList.remove('active'));
+                            this.classList.add('active');
+                            
+                            // Apply theme locally
+                            localStorage.setItem('shaarit_theme_id', themeId);
+                            document.documentElement.setAttribute('data-theme-id', themeId);
+                            
+                            // Handle light mode restriction
+                            if (!hasLight) {
+                                localStorage.setItem('theme', 'dark');
+                                document.documentElement.setAttribute('data-theme', 'dark');
+                                // Trigger event for sidebar to update its switch
+                                window.dispatchEvent(new Event('themeChanged'));
+                            }
+                            
+                            showSaveStatus();
+                            
+                            // Sync to bookmark in background
+                            syncThemeToBookmark(themeId).then(() => {
+                                // Refresh to ensure everything applies cleanly (plugins etc)
+                                setTimeout(() => window.location.reload(), 500);
+                            });
+                        });
+                    });
+                }
+                
+                async function syncThemeToBookmark(themeId) {
+                    try {
+                        // We fetch the current config bookmark if any
+                        const res = await fetch(shaarli.basePath + '/?searchtags=shaarit_config');
+                        const text = await res.text();
+                        const parser = new DOMParser();
+                        const doc = parser.parseFromString(text, 'text/html');
+                        
+                        let config = { version: 1, theme: themeId, collections: [] };
+                        let editUrl = null;
+                        
+                        // Find existing config
+                        const linkCard = doc.querySelector('.linklist-item');
+                        if (linkCard) {
+                            const descEl = linkCard.querySelector('.link-description p');
+                            if (descEl) {
+                                try {
+                                    const parsed = JSON.parse(descEl.textContent.trim());
+                                    config = Object.assign({}, parsed, { theme: themeId });
+                                } catch(e) {}
+                            }
+                            const editBtn = linkCard.querySelector('.link-action-edit');
+                            if (editBtn) editUrl = editBtn.getAttribute('href');
+                        }
+                        
+                        // Prepare form data
+                        const formData = new FormData();
+                        formData.append('lf_title', 'collections');
+                        formData.append('lf_url', 'https://shaarit.app/config/collections');
+                        formData.append('lf_tags', 'shaarit_config');
+                        formData.append('lf_description', JSON.stringify(config));
+                        formData.append('save_edit', 'Save');
+                        
+                        let token = '';
+                        
+                        if (editUrl) {
+                            // Update existing
+                            const editRes = await fetch(editUrl);
+                            const editDoc = parser.parseFromString(await editRes.text(), 'text/html');
+                            const tokenEl = editDoc.querySelector('input[name="token"]');
+                            const idEl = editDoc.querySelector('input[name="lf_id"]');
+                            if (tokenEl) token = tokenEl.value;
+                            if (idEl) formData.append('lf_id', idEl.value);
+                        } else {
+                            // Create new
+                            const addRes = await fetch(shaarli.basePath + '/admin/add-shaare');
+                            const addDoc = parser.parseFromString(await addRes.text(), 'text/html');
+                            const tokenEl = addDoc.querySelector('input[name="token"]');
+                            if (tokenEl) token = tokenEl.value;
+                        }
+                        
+                        if (token) {
+                            formData.append('token', token);
+                            await fetch(shaarli.basePath + '/admin/shaare', {
+                                method: 'POST',
+                                body: formData
+                            });
+                        }
+                    } catch (e) {
+                        console.error('Failed to sync theme to bookmark', e);
+                    }
+                }
+
+                // Initialize
+                document.addEventListener('DOMContentLoaded', function() {
+                    const toggleBtn = document.getElementById('themes-panel-toggle');
+                    const panel = document.getElementById('themes-panel');
+                    const closeBtn = document.getElementById('close-themes-panel');
+
+                    if (toggleBtn && panel) {
+                        toggleBtn.addEventListener('click', function(e) {
+                            e.preventDefault();
+                            panel.style.display = panel.style.display === 'none' ? '' : 'none';
+                            if (panel.style.display !== 'none') {
+                                renderThemes();
+                                panel.scrollIntoView({ behavior: 'smooth', block: 'start' });
+                            }
+                        });
+                    }
+
+                    if (closeBtn && panel) {
+                        closeBtn.addEventListener('click', function() {
+                            panel.style.display = 'none';
+                        });
+                    }
+                });
+            })();
+            
             // Hidden Tags Management
             (function() {
                 const STORAGE_KEY = 'shaarli_hidden_tags';