feat(nav): add full-width mobile glass dock

src/app/layout.tsx

@@ -1,4 +1,4 @@
-import type { Metadata } from "next";
+import type { Metadata, Viewport } from "next";
 import localFont from "next/font/local";
 import { Suspense } from "react";
 import MobileBottomNav from "@/components/MobileBottomNav";
@@ -18,6 +18,12 @@ const vazirmatn = localFont({
   fallback: ["Tahoma", "Arial", "sans-serif"],
 });
 
+export const viewport: Viewport = {
+  width: "device-width",
+  initialScale: 1,
+  viewportFit: "cover",
+};
+
 export async function generateMetadata(): Promise<Metadata> {
   const siteContent = await getCmsSiteContent();
   const title = siteContent.seo.title || siteContent.official_name;
@@ -61,7 +67,7 @@ export default async function RootLayout({
             <RouteProgress />
           </Suspense>
           <Navbar siteContent={siteContent} />
-          <div className="flex min-h-[calc(100svh-4.5rem)] flex-1 flex-col pb-28 md:pb-0">
+          <div className="flex min-h-[calc(100svh-4.5rem)] flex-1 flex-col pb-[calc(5.5rem+env(safe-area-inset-bottom))] md:pb-0">
             <div id="main-content" tabIndex={-1} className="flex-1 outline-none">
               {children}
             </div>

src/components/Footer.tsx

@@ -28,7 +28,7 @@ export default function Footer({ siteContent }: { siteContent: SiteContent }) {
   ].filter((contact) => contact !== null);
 
   return (
-    <footer className="bg-footer text-footer-foreground" dir="rtl">
+    <footer className="bg-footer pb-[calc(5.5rem+env(safe-area-inset-bottom))] text-footer-foreground md:pb-0" dir="rtl">
       <div className="container mx-auto px-4 py-10 md:py-12">
         <div className="grid gap-9 sm:grid-cols-2 lg:grid-cols-[1.5fr_0.8fr_1fr]">
           <div className="space-y-4">

src/components/MobileBottomNav.tsx

@@ -63,13 +63,10 @@ export default function MobileBottomNav({ siteContent }: { siteContent: SiteCont
   ];
 
   return (
-    <div
+    <div className="fixed inset-x-0 bottom-0 z-50 md:hidden">
-      className="fixed inset-x-0 z-50 px-4 md:hidden"
-      style={{ bottom: "calc(env(safe-area-inset-bottom) + 0.9rem)" }}
-    >
       <nav
         aria-label="ناوبری اصلی موبایل"
-        className="mx-auto flex w-full max-w-md items-center justify-between rounded-2xl border border-border bg-background/95 px-1.5 py-1.5 shadow-lg backdrop-blur-xl"
+        className="mobile-bottom-nav flex w-full items-stretch justify-around px-2 pt-2 pb-[calc(env(safe-area-inset-bottom)+0.5rem)]"
         dir="rtl"
       >
         {items.map((item) => {
@@ -81,14 +78,21 @@ export default function MobileBottomNav({ siteContent }: { siteContent: SiteCont
               key={item.key}
               to={item.href}
               className={cn(
-                "flex min-h-11 min-w-0 flex-1 flex-col items-center justify-center gap-0.5 rounded-xl px-1 py-1.5 text-[10px] font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring",
+                "relative flex min-h-[4.25rem] min-w-0 flex-1 flex-col items-center justify-center gap-1 rounded-xl px-1 pt-2 pb-1 text-xs font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring",
                 active
-                  ? "bg-secondary text-primary"
+                  ? "text-primary"
-                  : "text-muted-foreground hover:bg-secondary hover:text-foreground",
+                  : "text-foreground/75 hover:text-foreground",
               )}
               aria-current={active ? "page" : undefined}
             >
-              <Icon aria-hidden="true" className="h-4 w-4" />
+              <span
+                aria-hidden="true"
+                className={cn(
+                  "absolute top-0.5 h-0.5 w-5 rounded-full transition-colors",
+                  active ? "bg-primary" : "bg-transparent",
+                )}
+              />
+              <Icon aria-hidden="true" className="h-6 w-6 shrink-0" />
               <span className="max-w-full truncate">{item.label}</span>
             </Link>
           );

src/components/Navbar.tsx

@@ -120,7 +120,7 @@ export default function Navbar({ siteContent }: { siteContent: SiteContent }) {
   return (
     <nav
       aria-label="ناوبری اصلی"
-      className="sticky top-0 z-40 border-b border-border bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/85"
+      className="sticky top-0 z-40 border-b border-border bg-background/95 pt-[env(safe-area-inset-top)] backdrop-blur supports-[backdrop-filter]:bg-background/85 md:pt-0"
       dir="rtl"
     >
       <div className="container mx-auto px-4 py-2">

src/index.css

@@ -127,6 +127,28 @@ All colors MUST be HSL.
     @apply bg-background font-sans text-foreground;
   }
 
+  .mobile-bottom-nav {
+    border-top: 1px solid hsl(var(--border) / 0.7);
+    background-color: hsl(var(--background) / 0.82);
+    box-shadow: 0 -0.75rem 2rem hsl(var(--foreground) / 0.08);
+    -webkit-backdrop-filter: blur(1.25rem) saturate(1.35);
+    backdrop-filter: blur(1.25rem) saturate(1.35);
+  }
+
+  @supports not (backdrop-filter: blur(1px)) {
+    .mobile-bottom-nav {
+      background-color: hsl(var(--background));
+    }
+  }
+
+  @media (prefers-reduced-transparency: reduce) {
+    .mobile-bottom-nav {
+      background-color: hsl(var(--background));
+      -webkit-backdrop-filter: none;
+      backdrop-filter: none;
+    }
+  }
+
   :focus-visible {
     outline: 2px solid hsl(var(--ring));
     outline-offset: 3px;