fix(ui): improve mobile tabbar sizing, inventory actions, date picker proportions and stats lead time

frontend/src/components/layout/MobileTabBar.tsx

@@ -48,7 +48,7 @@ const ADMIN_INV_TABS: TabDef[] = [
 function TabBar({ tabs }: { tabs: TabDef[] }) {
   return (
     <nav
-      className="fixed inset-x-0 bottom-0 z-40 border-t border-line bg-panel md:hidden"
+      className="fixed inset-x-0 bottom-0 z-40 border-t border-line bg-panel/95 backdrop-blur-md md:hidden"
       style={{ paddingBottom: "env(safe-area-inset-bottom)" }}
     >
       <div className="grid grid-cols-4">
@@ -59,13 +59,13 @@ function TabBar({ tabs }: { tabs: TabDef[] }) {
             end={t.end}
             className={({ isActive }) =>
               cn(
-                "flex min-h-[56px] flex-col items-center justify-center gap-0.5 whitespace-nowrap px-1 text-[10.5px] font-medium transition-colors",
-                isActive ? "text-accent" : "text-muted",
+                "flex min-h-[66px] flex-col items-center justify-center gap-1.5 whitespace-nowrap px-1 py-1 transition-all active:scale-95",
+                isActive ? "text-accent font-bold" : "text-muted hover:text-ink font-medium",
               )
             }
           >
-            <t.icon className="h-5 w-5" strokeWidth={1.8} />
-            <span>{t.label}</span>
+            <t.icon className="h-6.5 w-6.5" strokeWidth={2.2} />
+            <span className="text-[12px] leading-tight tracking-tight">{t.label}</span>
           </NavLink>
         ))}
       </div>
@@ -97,4 +97,4 @@ export function MobileTabBar() {
     pathname.startsWith("/suppliers");
   if (onOfficePage && isOffice) return <TabBar tabs={PROC_TABS} />;
   return null;
-}
+}