diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 8aab09c..b85a484 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,7 +1,9 @@
-import { NavLink, Navigate, Route, Routes } from 'react-router-dom'
+import { useEffect, useState } from 'react'
+import { NavLink, Navigate, Route, Routes, useLocation } from 'react-router-dom'
 import {
   KeyRound,
   LogOut,
+  Menu,
   Moon,
   Router,
   ScrollText,
@@ -9,6 +11,7 @@ import {
   UserCog,
   Users as UsersIcon,
   Wifi,
+  X,
 } from 'lucide-react'
 import { useAuth } from '@/auth/auth'
 import { useTheme } from '@/lib/theme'
@@ -39,54 +42,145 @@ function ThemeToggle() {
   )
 }
 
-function Nav({ username, isAdmin }: { username: string; isAdmin: boolean }) {
+type NavItem = { to: string; label: string; icon: typeof Wifi }
+
+const linkClass = ({ isActive }: { isActive: boolean }) =>
+  cn(
+    'flex items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors',
+    isActive ? 'bg-primary text-primary-foreground' : 'text-muted-foreground hover:bg-accent',
+  )
+
+function SidebarContent({
+  username,
+  isAdmin,
+  onNavigate,
+}: {
+  username: string
+  isAdmin: boolean
+  onNavigate?: () => void
+}) {
   const { logout } = useAuth()
-  const linkClass = ({ isActive }: { isActive: boolean }) =>
-    cn(
-      'inline-flex items-center gap-2 rounded-md px-3 py-1.5 text-sm font-medium transition-colors',
-      isActive ? 'bg-primary text-primary-foreground' : 'text-muted-foreground hover:bg-accent',
-    )
+
+  const items: NavItem[] = [
+    { to: '/clients', label: 'Clients', icon: UsersIcon },
+    { to: '/devices', label: 'Devices', icon: Router },
+    { to: '/vlans', label: 'VLANs', icon: Wifi },
+  ]
+  const adminItems: NavItem[] = [
+    { to: '/users', label: 'Users', icon: UserCog },
+    { to: '/apikeys', label: 'API Keys', icon: KeyRound },
+    { to: '/logs', label: 'Activity Log', icon: ScrollText },
+  ]
+
+  const renderItem = ({ to, label, icon: Icon }: NavItem) => (
+    <NavLink key={to} to={to} className={linkClass} onClick={onNavigate}>
+      <Icon className="h-4 w-4 shrink-0" /> {label}
+    </NavLink>
+  )
 
   return (
-    <header className="border-b bg-background">
-      <div className="mx-auto flex h-14 max-w-6xl items-center gap-1 px-4">
-        <div className="mr-4 flex items-center gap-2 font-semibold">
+    <div className="flex h-full flex-col">
+      <div className="flex h-14 items-center gap-2 px-4 font-semibold">
+        <Wifi className="h-5 w-5 text-primary" />
+        RADIUS Admin
+      </div>
+      <nav className="flex flex-1 flex-col gap-1 overflow-y-auto px-3 py-2">
+        {items.map(renderItem)}
+        {isAdmin && (
+          <>
+            <div className="mt-4 px-3 pb-1 text-xs font-semibold uppercase tracking-wider text-muted-foreground">
+              Admin
+            </div>
+            {adminItems.map(renderItem)}
+          </>
+        )}
+      </nav>
+      <div className="border-t p-3">
+        <NavLink to="/account" className={linkClass} onClick={onNavigate} title="Change password">
+          <UserCog className="h-4 w-4 shrink-0" />
+          <span className="truncate">{username}</span>
+        </NavLink>
+        <Button
+          variant="ghost"
+          className="mt-1 w-full justify-start gap-3 px-3 text-muted-foreground"
+          onClick={logout}
+        >
+          <LogOut className="h-4 w-4 shrink-0" /> Sign out
+        </Button>
+      </div>
+    </div>
+  )
+}
+
+function Shell({
+  username,
+  isAdmin,
+  children,
+}: {
+  username: string
+  isAdmin: boolean
+  children: React.ReactNode
+}) {
+  const [open, setOpen] = useState(false)
+  const location = useLocation()
+
+  // Close the mobile drawer whenever the route changes.
+  useEffect(() => {
+    setOpen(false)
+  }, [location.pathname])
+
+  return (
+    <div className="min-h-screen bg-muted/20">
+      {/* Desktop sidebar */}
+      <aside className="fixed inset-y-0 left-0 z-30 hidden w-60 border-r bg-background md:block">
+        <SidebarContent username={username} isAdmin={isAdmin} />
+      </aside>
+
+      {/* Mobile drawer */}
+      {open && (
+        <div className="fixed inset-0 z-40 md:hidden">
+          <div
+            className="absolute inset-0 bg-black/50"
+            onClick={() => setOpen(false)}
+            aria-hidden="true"
+          />
+          <aside className="absolute inset-y-0 left-0 w-64 border-r bg-background shadow-lg">
+            <SidebarContent
+              username={username}
+              isAdmin={isAdmin}
+              onNavigate={() => setOpen(false)}
+            />
+          </aside>
+        </div>
+      )}
+
+      {/* Mobile top bar */}
+      <header className="sticky top-0 z-20 flex h-14 items-center gap-2 border-b bg-background px-4 md:hidden">
+        <Button
+          variant="ghost"
+          size="icon"
+          onClick={() => setOpen((v) => !v)}
+          aria-label={open ? 'Close menu' : 'Open menu'}
+        >
+          {open ? <X className="h-5 w-5" /> : <Menu className="h-5 w-5" />}
+        </Button>
+        <div className="flex items-center gap-2 font-semibold">
           <Wifi className="h-5 w-5 text-primary" />
           RADIUS Admin
         </div>
-        <NavLink to="/clients" className={linkClass}>
-          <UsersIcon className="h-4 w-4" /> Clients
-        </NavLink>
-        <NavLink to="/devices" className={linkClass}>
-          <Router className="h-4 w-4" /> Devices
-        </NavLink>
-        <NavLink to="/vlans" className={linkClass}>
-          <Wifi className="h-4 w-4" /> VLANs
-        </NavLink>
-        {isAdmin && (
-          <>
-            <NavLink to="/users" className={linkClass}>
-              <UserCog className="h-4 w-4" /> Users
-            </NavLink>
-            <NavLink to="/apikeys" className={linkClass}>
-              <KeyRound className="h-4 w-4" /> API Keys
-            </NavLink>
-            <NavLink to="/logs" className={linkClass}>
-              <ScrollText className="h-4 w-4" /> Activity Log
-            </NavLink>
-          </>
-        )}
-        <div className="ml-auto flex items-center gap-1">
-          <NavLink to="/account" className={linkClass} title="Change password">
-            {username}
-          </NavLink>
+        <div className="ml-auto">
           <ThemeToggle />
-          <Button variant="ghost" size="sm" className="text-muted-foreground" onClick={logout}>
-            <LogOut className="h-4 w-4" /> Sign out
-          </Button>
         </div>
+      </header>
+
+      <div className="md:pl-60">
+        {/* Desktop top-right theme toggle */}
+        <div className="hidden items-center justify-end px-6 pt-4 md:flex">
+          <ThemeToggle />
+        </div>
+        <main className="mx-auto max-w-6xl px-4 py-6">{children}</main>
       </div>
-    </header>
+    </div>
   )
 }
 
@@ -100,26 +194,20 @@ export default function App() {
   const admin = user.is_admin
 
   return (
-    <div className="min-h-screen bg-muted/20">
-      <Nav username={user.username} isAdmin={admin} />
-      <main className="mx-auto max-w-6xl px-4 py-6">
-        <Routes>
-          <Route path="/clients" element={<Clients />} />
-          <Route path="/devices" element={<Devices />} />
-          <Route path="/vlans" element={<Vlans />} />
-          <Route path="/account" element={<ChangePassword />} />
-          <Route
-            path="/users"
-            element={admin ? <Users /> : <Navigate to="/clients" replace />}
-          />
-          <Route
-            path="/apikeys"
-            element={admin ? <ApiKeys /> : <Navigate to="/clients" replace />}
-          />
-          <Route path="/logs" element={admin ? <Logs /> : <Navigate to="/clients" replace />} />
-          <Route path="*" element={<Navigate to="/clients" replace />} />
-        </Routes>
-      </main>
-    </div>
+    <Shell username={user.username} isAdmin={admin}>
+      <Routes>
+        <Route path="/clients" element={<Clients />} />
+        <Route path="/devices" element={<Devices />} />
+        <Route path="/vlans" element={<Vlans />} />
+        <Route path="/account" element={<ChangePassword />} />
+        <Route path="/users" element={admin ? <Users /> : <Navigate to="/clients" replace />} />
+        <Route
+          path="/apikeys"
+          element={admin ? <ApiKeys /> : <Navigate to="/clients" replace />}
+        />
+        <Route path="/logs" element={admin ? <Logs /> : <Navigate to="/clients" replace />} />
+        <Route path="*" element={<Navigate to="/clients" replace />} />
+      </Routes>
+    </Shell>
   )
 }
diff --git a/frontend/src/lib/api.ts b/frontend/src/lib/api.ts
index 5a3d108..55cad74 100644
--- a/frontend/src/lib/api.ts
+++ b/frontend/src/lib/api.ts
@@ -111,6 +111,11 @@ export interface ClientEdit {
   alias?: string
 }
 
+export interface ClientFilters {
+  search?: string
+  status?: ClientStatus
+}
+
 export interface ClientImportRow {
   mac_address?: string
   group?: string
@@ -260,8 +265,12 @@ export const api = {
   },
 
   clients: {
-    list: (limit = 50, offset = 0) =>
-      request<Page<Client>>(`/client/?limit=${limit}&offset=${offset}`),
+    list: (limit = 50, offset = 0, filters: ClientFilters = {}) => {
+      const params = new URLSearchParams({ limit: String(limit), offset: String(offset) })
+      if (filters.search?.trim()) params.set('search', filters.search.trim())
+      if (filters.status) params.set('status', filters.status)
+      return request<Page<Client>>(`/client/?${params.toString()}`)
+    },
     get: (mac: string) => request<Client>(`/client/${encodeURIComponent(mac)}`),
     add: (body: ClientCreate) =>
       request<Client>('/client/add', { method: 'POST', body: JSON.stringify(body) }),
diff --git a/frontend/src/pages/Clients.tsx b/frontend/src/pages/Clients.tsx
index ecc3bf4..ed7010a 100644
--- a/frontend/src/pages/Clients.tsx
+++ b/frontend/src/pages/Clients.tsx
@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useState, type ReactNode } from 'react'
 import { Link } from 'react-router-dom'
-import { Loader2, Pencil, Plus, RefreshCw, Trash2 } from 'lucide-react'
+import { Loader2, Pencil, Plus, RefreshCw, Search, Trash2, X } from 'lucide-react'
 import { toast } from 'sonner'
 import { api, ApiError, type Client, type ClientStatus, type Vlan } from '@/lib/api'
 import { normalizePhone, phoneError } from '@/lib/phone'
@@ -51,6 +51,13 @@ export function Clients() {
   const [editing, setEditing] = useState<Client | null>(null)
   const [deleting, setDeleting] = useState<Client | null>(null)
 
+  // Filters — `search` is the raw input; `debouncedSearch` is what we query with
+  // so we don't fire a request on every keystroke.
+  const [search, setSearch] = useState('')
+  const [debouncedSearch, setDebouncedSearch] = useState('')
+  const [status, setStatus] = useState<ClientStatus | 'all'>('all')
+  const hasFilters = debouncedSearch.trim() !== '' || status !== 'all'
+
   const [pageSize, setPageSize] = usePageSize()
   const [page, setPage] = useState(1)
   const pageCount = Math.max(1, Math.ceil(total / pageSize))
@@ -58,12 +65,20 @@ export function Clients() {
   // until at least one VLAN exists.
   const noVlans = !loading && vlans.length === 0
 
-  // Server-side pagination: fetch only the current page's rows.
+  useEffect(() => {
+    const t = setTimeout(() => setDebouncedSearch(search), 300)
+    return () => clearTimeout(t)
+  }, [search])
+
+  // Server-side pagination + filtering: fetch only the current page's rows.
   const load = useCallback(async () => {
     setLoading(true)
     try {
       const [d, v] = await Promise.all([
-        api.clients.list(pageSize, (page - 1) * pageSize),
+        api.clients.list(pageSize, (page - 1) * pageSize, {
+          search: debouncedSearch,
+          status: status === 'all' ? undefined : status,
+        }),
         api.vlans.list(),
       ])
       setDevices(d.items)
@@ -75,14 +90,14 @@ export function Clients() {
     } finally {
       setLoading(false)
     }
-  }, [page, pageSize])
+  }, [page, pageSize, debouncedSearch, status])
 
   useEffect(() => {
     load()
   }, [load])
 
-  // Reset to the first page when the page size changes.
-  useEffect(() => setPage(1), [pageSize])
+  // Reset to the first page when the page size or an active filter changes.
+  useEffect(() => setPage(1), [pageSize, debouncedSearch, status])
   // Clamp the page when the total shrinks (e.g. after a delete).
   useEffect(() => {
     if (page > pageCount) setPage(pageCount)
@@ -93,7 +108,9 @@ export function Clients() {
       <div className="flex items-center justify-between">
         <div>
           <h1 className="text-2xl font-semibold">Clients</h1>
-          <p className="text-sm text-muted-foreground">{total} registered</p>
+          <p className="text-sm text-muted-foreground">
+            {total} {hasFilters ? 'match' : 'registered'}
+          </p>
         </div>
         <div className="flex gap-2">
           <Button variant="outline" size="icon" onClick={load} title="Refresh">
@@ -110,6 +127,52 @@ export function Clients() {
         </div>
       </div>
 
+      <div className="flex flex-col gap-2 sm:flex-row sm:items-center">
+        <div className="relative flex-1">
+          <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
+          <Input
+            value={search}
+            onChange={(e) => setSearch(e.target.value)}
+            placeholder="Search by MAC, name, phone or alias…"
+            className="pl-9 pr-9"
+          />
+          {search && (
+            <button
+              type="button"
+              onClick={() => setSearch('')}
+              className="absolute right-2 top-1/2 -translate-y-1/2 rounded-sm p-1 text-muted-foreground hover:text-foreground"
+              aria-label="Clear search"
+            >
+              <X className="h-4 w-4" />
+            </button>
+          )}
+        </div>
+        <Select value={status} onValueChange={(v) => setStatus(v as ClientStatus | 'all')}>
+          <SelectTrigger className="sm:w-40">
+            <SelectValue placeholder="Status" />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="all">All statuses</SelectItem>
+            {STATUSES.map((s) => (
+              <SelectItem key={s} value={s}>
+                {s}
+              </SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+        {hasFilters && (
+          <Button
+            variant="ghost"
+            onClick={() => {
+              setSearch('')
+              setStatus('all')
+            }}
+          >
+            Clear
+          </Button>
+        )}
+      </div>
+
       {noVlans && (
         <div className="rounded-lg border border-amber-500/40 bg-amber-500/10 px-4 py-3 text-sm text-amber-700 dark:text-amber-400">
           No VLANs exist yet. <Link to="/vlans" className="font-medium underline">Add a VLAN</Link>{' '}
@@ -140,7 +203,9 @@ export function Clients() {
             ) : devices.length === 0 ? (
               <TableRow>
                 <TableCell colSpan={7} className="py-10 text-center text-muted-foreground">
-                  No devices yet. Add one to get started.
+                  {hasFilters
+                    ? 'No clients match your filters.'
+                    : 'No devices yet. Add one to get started.'}
                 </TableCell>
               </TableRow>
             ) : (