feat: change drawer behavior

public/styles/main.css

@@ -3292,17 +3292,6 @@ select.param-input:focus {
 }
 
 /* Desktop slide-in details drawer */
-.details-drawer-backdrop {
-    position: fixed;
-    inset: 0;
-    background: rgba(0, 0, 0, 0.3);
-    opacity: 0;
-    pointer-events: none;
-    transition: opacity 0.2s ease;
-    z-index: 999;
-}
-.details-drawer-backdrop.visible { opacity: 1; pointer-events: auto; }
-
 .details-drawer {
     position: fixed;
     top: 0;
@@ -3376,8 +3365,7 @@ select.param-input:focus {
 
 /* Only enable drawer on wider screens; on small keep inline cards */
 @media (max-width: 1023px) {
-    .details-drawer,
-    .details-drawer-backdrop { display: none; }
+    .details-drawer { display: none; }
 }
 
 /* Terminal Panel - bottom-centered modal style */