fixed some UX inconsistencies in gatekeeper

src/static_src/scss/_room.scss

@@ -299,22 +299,11 @@ body:has(.gate-overlay) {
                 justify-content: center;
             }
 
-            .drop-token-btn {
-                position: absolute;
-                inset: 0;
-                border-radius: 50%;
-                width: 100%;
-                height: 100%;
-                background: transparent;
-                border: none;
-                box-shadow:
-                    0.05rem 0.05rem 0.5rem rgba(0, 0, 0, 1),
-                ;
-                font-size: 0;
-                cursor: pointer;
+            // CARTE drop-target circle — matches .reserved appearance
+            &:has(.drop-token-btn) {
+                background: rgba(var(--terUser), 0.2);
 
                 &:hover {
-                    background: rgba(var(--quaUser), 0.15);
                     box-shadow:
                         -0.1rem -0.1rem 1rem rgba(var(--ninUser), 1),
                         -0.1rem -0.1rem 0.25rem rgba(0, 0, 0, 1),