diff --git a/src-tauri/resources/themes/default.css b/src-tauri/resources/themes/default.css
index 1bd593d..00d0a22 100644
--- a/src-tauri/resources/themes/default.css
+++ b/src-tauri/resources/themes/default.css
@@ -187,25 +187,42 @@ body {
 
 /* ── Barre latérale ─────────────────────────── */
 
-/* Lien de premier niveau au survol */
-.sidebar__menu__first-level-title__link:hover {
+/* Fond de la barre latérale */
+.sidebar {
+  background: #1a1b2e;
+}
+
+/* Lien racine (premier niveau) au survol */
+.nav-root-link:hover {
   color: #818cf8;
 }
 
-/* Lien de premier niveau actif (page ouverte) */
-.sidebar__menu__first-level-title__link.active {
+/* Lien racine (premier niveau) actif (page ouverte) */
+.nav-root-link.active {
   color: #818cf8;
   background: rgba(129, 140, 248, 0.08);
 }
 
-/* Lien de second niveau au survol */
-.sidebar__menu__second-level-title__link:hover {
+/* Lien de dossier au survol */
+.nav-folder-link:hover {
   color: #818cf8;
 }
 
-/* Lien de second niveau actif (page ouverte) */
-.sidebar__menu__second-level-title__link.active {
+/* Lien de dossier actif */
+.nav-folder-link.active {
   color: #818cf8;
+  background: rgba(129, 140, 248, 0.08);
+}
+
+/* Lien de fichier (sous-niveaux) au survol */
+.nav-file-link:hover {
+  color: #818cf8;
+}
+
+/* Lien de fichier actif (page ouverte) */
+.nav-file-link.active {
+  color: #818cf8;
+  background: rgba(129, 140, 248, 0.08);
 }
 
 
@@ -213,8 +230,8 @@ body {
 
 /* Fond et bordure inférieure de la barre de titre */
 #titlebar {
-  background: #0f172a;
-  border-bottom: 1px solid #1e293b;
+  background: #1a1b2e;
+  /* border-bottom: 1px solid #1e293b; */
 }
 
 /* Texte du titre de la fenêtre */
diff --git a/src-tauri/resources/themes/shell-indigo.css b/src-tauri/resources/themes/shell-indigo.css
index d60b943..d1be62e 100644
--- a/src-tauri/resources/themes/shell-indigo.css
+++ b/src-tauri/resources/themes/shell-indigo.css
@@ -17,10 +17,12 @@ body { background: #f1f5f9; }
 .content table td { border-bottom-color: rgba(79, 70, 229, 0.25); }
 .content strong { color: #0f172a; }
 .content hr { border-color: #e2e8f0; }
-.sidebar__menu__first-level-title__link:hover { color: #818cf8; }
-.sidebar__menu__first-level-title__link.active { color: #818cf8; background: rgba(129, 140, 248, 0.08); }
-.sidebar__menu__second-level-title__link:hover { color: #818cf8; }
-.sidebar__menu__second-level-title__link.active { color: #818cf8; }
+.nav-root-link:hover { color: #818cf8; }
+.nav-root-link.active { color: #818cf8; background: rgba(129, 140, 248, 0.08); }
+.nav-folder-link:hover { color: #818cf8; }
+.nav-folder-link.active { color: #818cf8; background: rgba(129, 140, 248, 0.08); }
+.nav-file-link:hover { color: #818cf8; }
+.nav-file-link.active { color: #818cf8; background: rgba(129, 140, 248, 0.08); }
 #titlebar { background: #0f172a; border-bottom: 1px solid #1e293b; }
 #titlebar-title { color: rgba(255,255,255,0.5); }
 .titlebar-controls button { color: rgba(255,255,255,0.45); }
diff --git a/src/style.css b/src/style.css
index 636dfec..605a1ba 100644
--- a/src/style.css
+++ b/src/style.css
@@ -324,7 +324,11 @@ body {
   transition: color 0.2s;
 }
 .nav-root-link:hover { color: #ff5577; }
-.nav-root-link.active { color: #ff5577; font-weight: 500; }
+.nav-root-link.active {
+  color: #818cf8;
+  background: rgba(129, 140, 248, 0.08);
+  font-weight: 500;
+}
 
 .nav-folder { margin: 0; }
 .nav-folder > summary {
@@ -392,7 +396,11 @@ body {
   transition: color 0.2s;
 }
 .nav-file-link:hover { color: #ff5577; }
-.nav-file-link.active { color: #ff5577; font-weight: 500; }
+.nav-file-link.active {
+  color: #818cf8;
+  background: rgba(129, 140, 248, 0.08);
+  font-weight: 500;
+}
 
 .nav-depth-1 > .nav-file-link { padding: 5px 24px 5px 52px; }
 .nav-depth-1 > .nav-folder > summary { padding-left: 24px; }