Rediseña la navegación móvil del panel/admin con barra de pestañas inferior

Sustituye el menú hamburguesa por una barra fija inferior con iconos y
etiquetas (thumb-friendly, siempre visible), manteniendo la nav horizontal
en escritorio.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

mvp/b2c/src/app/admin/layout.tsx

@@ -1,30 +1,32 @@
 import Link from 'next/link';
 import type { Metadata } from 'next';
 import { requireAdmin } from '@/lib/auth/current-user';
+import AppNav from '@/components/AppNav';
 
 export const metadata: Metadata = { title: 'Admin · Reformix' };
 
+const ADMIN_LINKS = [
+  { href: '/admin', label: 'Resumen', icon: 'resumen' },
+  { href: '/admin/usuarios', label: 'Usuarios', icon: 'usuarios' },
+  { href: '/admin/planes', label: 'Planes', icon: 'planes' },
+] as const;
+
 export default async function AdminLayout({ children }: { children: React.ReactNode }) {
   await requireAdmin();
   return (
     <div className="min-h-screen bg-gray-50">
-      <header className="sticky top-0 z-10 bg-white border-b border-gray-200">
+      <header className="sticky top-0 z-20 bg-white border-b border-gray-200">
-        <div className="max-w-6xl mx-auto px-6 h-16 flex items-center justify-between">
+        <div className="relative max-w-6xl mx-auto px-6 h-16 flex items-center justify-between">
-          <Link href="/admin" className="flex items-center gap-3">
+          <Link href="/admin" className="flex items-center gap-2 min-w-0">
-            <span className="inline-flex items-center justify-center w-8 h-8 rounded-lg bg-black text-white font-black italic text-lg leading-none">R</span>
+            <span className="inline-flex shrink-0 items-center justify-center w-8 h-8 rounded-lg bg-black text-white font-black italic text-lg leading-none">R</span>
             <span className="font-extrabold tracking-tight text-black">Reformix</span>
-            <span className="text-gray-300">/</span>
+            <span className="hidden sm:inline text-gray-300">/</span>
-            <span className="text-sm font-medium text-gray-600">Admin</span>
+            <span className="hidden sm:inline text-sm font-medium text-gray-600">Admin</span>
           </Link>
-          <nav className="flex items-center gap-4 text-xs font-medium">
+          <AppNav links={ADMIN_LINKS} />
-            <Link href="/admin" className="text-gray-500 hover:text-black">Resumen</Link>
-            <Link href="/admin/usuarios" className="text-gray-500 hover:text-black">Usuarios</Link>
-            <Link href="/admin/planes" className="text-gray-500 hover:text-black">Planes</Link>
-            <form action="/logout" method="post"><button type="submit" className="text-gray-500 hover:text-black">Salir</button></form>
-          </nav>
         </div>
       </header>
-      <main className="max-w-6xl mx-auto px-6 py-8">{children}</main>
+      <main className="max-w-6xl mx-auto px-6 py-8 pb-24 sm:pb-8">{children}</main>
     </div>
   );
 }

mvp/b2c/src/app/panel/layout.tsx

@@ -4,6 +4,13 @@ import { requireUser } from '@/lib/auth/current-user';
 import { db } from '@/db';
 import { tenants } from '@/db/schema';
 import { eq } from 'drizzle-orm';
+import AppNav from '@/components/AppNav';
+
+const PANEL_LINKS = [
+  { href: '/panel', label: 'Leads', icon: 'leads' },
+  { href: '/panel/precios', label: 'Precios', icon: 'precios' },
+  { href: '/panel/empresa', label: 'Empresa', icon: 'empresa' },
+] as const;
 
 export const metadata: Metadata = {
   title: 'Panel · Reformix',
@@ -19,27 +26,22 @@ export default async function PanelLayout({ children }: { children: React.ReactN
 
   return (
     <div className="min-h-screen bg-gray-50">
-      <header className="sticky top-0 z-10 bg-white border-b border-gray-200">
+      <header className="sticky top-0 z-20 bg-white border-b border-gray-200">
-        <div className="max-w-6xl mx-auto px-6 h-16 flex items-center justify-between">
+        <div className="relative max-w-6xl mx-auto px-6 h-16 flex items-center justify-between">
-          <Link href="/panel" className="flex items-center gap-3">
+          <Link href="/panel" className="flex items-center gap-2 min-w-0">
-            <span className="inline-flex items-center justify-center w-8 h-8 rounded-lg bg-black text-white font-black italic text-lg leading-none">
+            <span className="inline-flex shrink-0 items-center justify-center w-8 h-8 rounded-lg bg-black text-white font-black italic text-lg leading-none">
               R
             </span>
             <span className="font-extrabold tracking-tight text-black">Reformix</span>
-            <span className="text-gray-300">/</span>
+            <span className="hidden sm:inline text-gray-300">/</span>
-            <span className="text-sm font-medium text-gray-600">{nombreEmpresa}</span>
+            <span className="hidden sm:inline text-sm font-medium text-gray-600 truncate">
+              {nombreEmpresa}
+            </span>
           </Link>
-          <nav className="flex items-center gap-4 text-xs font-medium">
+          <AppNav links={PANEL_LINKS} />
-            <Link href="/panel" className="text-gray-500 hover:text-black">Leads</Link>
-            <Link href="/panel/precios" className="text-gray-500 hover:text-black">Precios</Link>
-            <Link href="/panel/empresa" className="text-gray-500 hover:text-black">Empresa</Link>
-            <form action="/logout" method="post">
-              <button type="submit" className="text-gray-500 hover:text-black">Salir</button>
-            </form>
-          </nav>
         </div>
       </header>
-      <main className="max-w-6xl mx-auto px-6 py-8">{children}</main>
+      <main className="max-w-6xl mx-auto px-6 py-8 pb-24 sm:pb-8">{children}</main>
     </div>
   );
 }

mvp/b2c/src/components/AppNav.tsx

@@ -0,0 +1,157 @@
+'use client';
+
+import Link from 'next/link';
+import { usePathname } from 'next/navigation';
+
+export type AppNavIcon =
+  | 'leads'
+  | 'precios'
+  | 'empresa'
+  | 'resumen'
+  | 'usuarios'
+  | 'planes';
+
+export type AppNavLink = { href: string; label: string; icon: AppNavIcon };
+
+// El enlace activo es el href más específico (más largo) que prefija el pathname.
+function activeHref(pathname: string, links: readonly AppNavLink[]): string {
+  let best = '';
+  for (const l of links) {
+    if ((pathname === l.href || pathname.startsWith(l.href + '/')) && l.href.length > best.length) {
+      best = l.href;
+    }
+  }
+  return best;
+}
+
+const ICON_PATHS: Record<AppNavIcon | 'salir', React.ReactNode> = {
+  leads: (
+    <>
+      <path d="M3 4h18v12H6l-3 3V4Z" />
+      <path d="M7 9h10M7 12h6" />
+    </>
+  ),
+  precios: (
+    <>
+      <path d="M20 12 12.5 4.5A2 2 0 0 0 11 4H5a1 1 0 0 0-1 1v6a2 2 0 0 0 .6 1.4L12 20l8-8Z" />
+      <circle cx="8.5" cy="8.5" r="1.2" />
+    </>
+  ),
+  empresa: (
+    <>
+      <path d="M4 21V6l8-3 8 3v15" />
+      <path d="M4 21h16M9 21v-5h6v5M8 9h.01M12 9h.01M16 9h.01M8 13h.01M12 13h.01M16 13h.01" />
+    </>
+  ),
+  resumen: (
+    <>
+      <rect x="3" y="3" width="7" height="9" rx="1" />
+      <rect x="14" y="3" width="7" height="5" rx="1" />
+      <rect x="14" y="12" width="7" height="9" rx="1" />
+      <rect x="3" y="16" width="7" height="5" rx="1" />
+    </>
+  ),
+  usuarios: (
+    <>
+      <circle cx="9" cy="8" r="3" />
+      <path d="M3.5 20a5.5 5.5 0 0 1 11 0" />
+      <path d="M16 5.5a3 3 0 0 1 0 5.5M17 14.5a5.5 5.5 0 0 1 3.5 5" />
+    </>
+  ),
+  planes: (
+    <>
+      <path d="M12 3 3 8l9 5 9-5-9-5Z" />
+      <path d="M3 13l9 5 9-5M3 18l9 5 9-5" />
+    </>
+  ),
+  salir: (
+    <>
+      <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" />
+      <path d="M16 17l5-5-5-5M21 12H9" />
+    </>
+  ),
+};
+
+function Icon({ name }: { name: AppNavIcon | 'salir' }) {
+  return (
+    <svg
+      width="22"
+      height="22"
+      viewBox="0 0 24 24"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="1.75"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      aria-hidden="true"
+    >
+      {ICON_PATHS[name]}
+    </svg>
+  );
+}
+
+export default function AppNav({ links }: { links: readonly AppNavLink[] }) {
+  const pathname = usePathname();
+  const active = activeHref(pathname, links);
+
+  return (
+    <>
+      {/* Escritorio: navegación horizontal en la cabecera */}
+      <nav className="hidden sm:flex items-center gap-4 text-xs font-medium">
+        {links.map((l) => (
+          <Link
+            key={l.href}
+            href={l.href}
+            className={active === l.href ? 'text-black font-semibold' : 'text-gray-500 hover:text-black'}
+          >
+            {l.label}
+          </Link>
+        ))}
+        <form action="/logout" method="post">
+          <button type="submit" className="text-gray-500 hover:text-black">
+            Salir
+          </button>
+        </form>
+      </nav>
+
+      {/* Móvil: barra de pestañas fija inferior (thumb-friendly) */}
+      <nav
+        className="sm:hidden fixed inset-x-0 bottom-0 z-30 border-t border-gray-200 bg-white/95 backdrop-blur supports-[backdrop-filter]:bg-white/80"
+        style={{ paddingBottom: 'env(safe-area-inset-bottom)' }}
+        aria-label="Navegación principal"
+      >
+        <div className="grid grid-cols-4">
+          {links.map((l) => {
+            const isActive = active === l.href;
+            return (
+              <Link
+                key={l.href}
+                href={l.href}
+                aria-current={isActive ? 'page' : undefined}
+                className={
+                  'relative flex flex-col items-center justify-center gap-1 pt-2.5 pb-2 text-[11px] font-medium transition-colors ' +
+                  (isActive ? 'text-black' : 'text-gray-400 hover:text-gray-600')
+                }
+              >
+                {isActive && (
+                  <span className="absolute top-0 h-0.5 w-8 rounded-full bg-black" aria-hidden="true" />
+                )}
+                <Icon name={l.icon} />
+                <span className="leading-none">{l.label}</span>
+              </Link>
+            );
+          })}
+          <form action="/logout" method="post" className="contents">
+            <button
+              type="submit"
+              className="flex flex-col items-center justify-center gap-1 pt-2.5 pb-2 text-[11px] font-medium text-gray-400 transition-colors hover:text-gray-600"
+            >
+              <Icon name="salir" />
+              <span className="leading-none">Salir</span>
+            </button>
+          </form>
+        </div>
+      </nav>
+    </>
+  );
+}