diff --git a/Bootstrap_new/css/theme-modern.css b/Bootstrap_new/css/theme-modern.css
index f87639a9..acdd5334 100644
--- a/Bootstrap_new/css/theme-modern.css
+++ b/Bootstrap_new/css/theme-modern.css
@@ -520,30 +520,30 @@ h1, h2, h3, h4, h5, h6, .fw-bold, .fw-semibold {
 
 .section { padding: 0; }
 
-/* ==============================
-   CONTEXT DRAWER (Barre Latérale D)
-   ============================== */
+/* --- CONTEXT DRAWER (Panneau Droit) --- */
 
-/* Trigger button — gris charcoal */
+/* Bouton d'appel (Plus discret, rectangulaire) */
 .btn-info-context {
-  position: fixed;
-  right: 0;
-  top: 50%;
-  transform: translateY(-50%);
-  z-index: 1100;
-  background: var(--color-primary);
-  color: white;
-  border: none;
-  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
-  padding: 12px 10px;
-  cursor: pointer;
-  box-shadow: var(--shadow-md);
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  gap: 6px;
-  transition: all var(--transition-base);
+    position: fixed;
+    right: 0;
+    top: 50%;
+    transform: translateY(-50%);
+    z-index: 1100;
+    background: var(--color-primary);
+    color: white;
+    border: none;
+    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
+    padding: 15px 8px;
+    cursor: pointer;
+    box-shadow: var(--shadow-sm);
+    writing-mode: vertical-rl; /* Texte vertical pour gagner de la place */
+    text-orientation: mixed;
+    font-size: 10px;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 1px;
 }
+
 .btn-info-context:hover {
   background: var(--color-primary-light);
   padding-left: 14px;