Extend NDS patterns and migrate shared UI surfaces

website/src/styles/toolboxes/_module-shell.scss

@@ -7,7 +7,7 @@
   align-items: center;
   justify-content: space-between;
   gap: var(--space-3);
-  padding: var(--space-4);
+  padding: var(--space-2);
   border-bottom: 1px solid var(--color-border);
 }
 

website/src/styles/toolboxes/layout/_modules.scss

@@ -1,5 +1,6 @@
 // Rôle : regroupe les colonnes, modules et zones de dépôt des toolboxes.
 @use "../../mixins";
+@use "../../design-system/controls";
 
 .modules {
   align-items: start;
@@ -50,19 +51,9 @@
 .module {
   --reorder-drop-shadow: var(--shadow-sm);
 
-  position: relative;
-  contain: paint;
-  overflow: hidden;
   border-color: transparent;
   background: rgba(16, 20, 38, 0.42);
-  box-shadow: var(--shadow-sm);
-
-  @include mixins.gold-panel-frame(true);
-}
-
-.module > * {
-  position: relative;
-  z-index: 1;
+  @include controls.tool-panel-surface;
 }
 
 .module:hover {