feat(mobile-fixes-phase4): Complete US-403 - Fix MobileDrawerMenu - Secțiunea ANALIZE Vizibilă

Implemented by Ralph autonomous loop.
Iteration: 3

Co-Authored-By: Claude <noreply@anthropic.com>

src/shared/styles/layout/header.css

@@ -170,8 +170,9 @@
 
 /* Mobile Responsive */
 @media (max-width: 768px) {
+  /* US-401/US-402: Hide desktop header on mobile - MobileTopBar takes over */
   .header-container {
-    padding: 0 var(--space-md, 12px);
+    display: none !important;
   }
 
   .header-left {

src/shared/styles/layout/navigation.css

@@ -134,8 +134,10 @@
 
 /* Mobile Responsive */
 @media (max-width: 768px) {
-  .slide-menu {
-    width: 280px;
+  /* US-401/US-402: Hide desktop slide menu on mobile - MobileDrawerMenu takes over */
+  .slide-menu,
+  .slide-menu-overlay {
+    display: none !important;
   }
 
   .menu-section {