feat: add shared bottom navigation shell

p2p-safe-swap/app/(app)/layout.tsx

@@ -0,0 +1,19 @@
+import { BottomNav } from "@/frontend/components/ui/bottom-nav";
+
+/**
+ * App chrome for authenticated/product screens.
+ * Marketing home (`app/page.tsx` at `/`) stays outside this group so it
+ * never mounts the bottom navigation bar.
+ */
+export default function AppLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <div className="relative flex min-h-full flex-1 flex-col pb-20">
+      {children}
+      <BottomNav />
+    </div>
+  );
+}

p2p-safe-swap/app/p2p/orders/page.tsx → p2p-safe-swap/app/(app)/p2p/orders/page.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import { useRouter } from "next/navigation";
 import { P2POrderList } from "@/frontend/components/p2p";
 import type { OrderMode, P2POrder } from "@/frontend/components/p2p";
 
@@ -61,6 +62,7 @@ const MOCK_ORDERS: P2POrder[] = [
 const BEST_PRICE = 0.9201;
 
 export default function OrdersPage() {
+  const router = useRouter();
   const [mode, setMode] = useState<OrderMode>("buy");
 
   return (
@@ -71,7 +73,7 @@ export default function OrdersPage() {
         mode={mode}
         onModeChange={setMode}
         onBuy={(orderId) => {
-          console.log("Order action:", { mode, orderId });
+          router.push(`/p2p/orders/${orderId}`);
         }}
       />
     </main>

p2p-safe-swap/app/transactions/page.tsx → p2p-safe-swap/app/(app)/transactions/page.tsx

@@ -1,7 +1,9 @@
 "use client";
 
 import * as React from "react";
+import Link from "next/link";
 import { ArrowLeft, SlidersHorizontal } from "lucide-react";
+import { Reveal } from "@/frontend/components/motion/reveal";
 import {
   TransactionList,
   type Transaction,
@@ -89,13 +91,13 @@ export default function TransactionsPage() {
   return (
     <div className="mx-auto flex min-h-full w-full max-w-md flex-col bg-background px-4 py-6">
       <header className="mb-6 flex items-center justify-between">
-        <button
-          type="button"
+        <Link
+          href="/p2p/orders"
           aria-label="Volver"
-          className="flex size-10 items-center justify-center rounded-full text-foreground transition-colors hover:bg-muted"
+          className="flex size-10 items-center justify-center rounded-full text-foreground transition-colors hover:bg-muted focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
         >
           <ArrowLeft className="size-5" />
-        </button>
+        </Link>
 
         <h1 className="text-lg font-semibold text-foreground">Transacciones</h1>
 
@@ -108,13 +110,15 @@ export default function TransactionsPage() {
         </button>
       </header>
 
-      <TransactionList
-        transactions={mockTransactions}
-        searchQuery={searchQuery}
-        activeTab={activeTab}
-        onSearch={setSearchQuery}
-        onTabChange={(tab) => setActiveTab(tab as TransactionTab)}
-      />
+      <Reveal>
+        <TransactionList
+          transactions={mockTransactions}
+          searchQuery={searchQuery}
+          activeTab={activeTab}
+          onSearch={setSearchQuery}
+          onTabChange={(tab) => setActiveTab(tab as TransactionTab)}
+        />
+      </Reveal>
     </div>
   );
 }

p2p-safe-swap/app/layout.tsx

@@ -40,7 +40,8 @@ export default function RootLayout({
           disableTransitionOnChange
         >
           {children}
-          <ThemeToggle className="fixed bottom-4 right-4 z-50" />
+          {/* Sit above the fixed BottomNav (h-16 + safe area) on app routes */}
+          <ThemeToggle className="fixed bottom-20 right-4 z-50" />
         </ThemeProvider>
       </body>
     </html>

p2p-safe-swap/frontend/components/ui/bottom-nav.tsx

@@ -0,0 +1,84 @@
+"use client";
+
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+import {
+  Home,
+  ListOrdered,
+  MessageCircle,
+  Receipt,
+  Wallet,
+  type LucideIcon,
+} from "lucide-react";
+import { cn } from "@/lib/utils";
+
+interface NavItem {
+  href: string;
+  label: string;
+  icon: LucideIcon;
+  /** Exact match only (marketing/home). Nested routes use prefix match. */
+  exact?: boolean;
+  /** Optional path prefix for active state when href is a specific entry URL. */
+  matchPrefix?: string;
+}
+
+const NAV_ITEMS: NavItem[] = [
+  { href: "/", label: "Inicio", icon: Home, exact: true },
+  { href: "/p2p/orders", label: "Órdenes", icon: ListOrdered },
+  { href: "/wallet", label: "Billetera", icon: Wallet },
+  { href: "/transactions", label: "Transacciones", icon: Receipt },
+  {
+    href: "/chat/demo",
+    label: "Chat",
+    icon: MessageCircle,
+    matchPrefix: "/chat",
+  },
+];
+
+function isActive(pathname: string, item: NavItem): boolean {
+  if (item.exact) return pathname === item.href;
+  const base = item.matchPrefix ?? item.href;
+  return pathname === base || pathname.startsWith(`${base}/`);
+}
+
+export function BottomNav({ className }: { className?: string }) {
+  const pathname = usePathname();
+
+  return (
+    <nav
+      data-slot="bottom-nav"
+      aria-label="Navegación principal"
+      className={cn(
+        "fixed inset-x-0 bottom-0 z-40 border-t border-border bg-card",
+        "pb-[env(safe-area-inset-bottom)]",
+        className
+      )}
+    >
+      <ul className="mx-auto flex h-16 max-w-md items-stretch justify-around px-1">
+        {NAV_ITEMS.map((item) => {
+          const active = isActive(pathname, item);
+          const Icon = item.icon;
+
+          return (
+            <li key={item.href} className="flex flex-1">
+              <Link
+                href={item.href}
+                aria-current={active ? "page" : undefined}
+                className={cn(
+                  "flex flex-1 flex-col items-center justify-center gap-0.5 rounded-xl px-1 text-[10px] transition-colors sm:text-xs",
+                  "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1",
+                  active
+                    ? "bg-primary/15 font-medium text-primary"
+                    : "font-normal text-muted-foreground hover:text-foreground"
+                )}
+              >
+                <Icon className="size-5 shrink-0" aria-hidden="true" />
+                <span className="truncate">{item.label}</span>
+              </Link>
+            </li>
+          );
+        })}
+      </ul>
+    </nav>
+  );
+}