diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index cec1347..04fdb07 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -9,7 +9,9 @@
       "version": "0.0.0",
       "dependencies": {
         "@tanstack/react-query": "^5.101.4",
+        "admin-lte": "^4.1.0",
         "axios": "^1.19.0",
+        "bootstrap-icons": "^1.13.1",
         "mqtt": "^5.15.2",
         "qrcode": "^1.5.4",
         "react": "^19.2.8",
@@ -421,6 +423,17 @@
         "node": "^20.19.0 || >=22.12.0"
       }
     },
+    "node_modules/@popperjs/core": {
+      "version": "2.11.8",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.8.tgz",
+      "integrity": "sha512-P1st0aksCrn9sGZhp8GMYwBnQsbvAWsZAX44oXNNvLHGqAOcoVxmjZiohstwQ7SqKnbR47akdNi+uleWD8+g6A==",
+      "license": "MIT",
+      "peer": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/popperjs"
+      }
+    },
     "node_modules/@rolldown/binding-android-arm64": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.2.2.tgz",
@@ -1321,6 +1334,18 @@
         "node": ">=6.5"
       }
     },
+    "node_modules/admin-lte": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/admin-lte/-/admin-lte-4.1.0.tgz",
+      "integrity": "sha512-XsBJSYMYjUD0PYgTeI2/3WIeYGPtr2tUAsd7ei8Zgh5bYhGzLkTxAy7aIV/k19zifmHY9llaEZ0dPIUOKCzArA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=20"
+      },
+      "peerDependencies": {
+        "bootstrap": "^5.3.8"
+      }
+    },
     "node_modules/agent-base": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
@@ -1407,6 +1432,42 @@
         "readable-stream": "^4.2.0"
       }
     },
+    "node_modules/bootstrap": {
+      "version": "5.3.8",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.3.8.tgz",
+      "integrity": "sha512-HP1SZDqaLDPwsNiqRqi5NcP0SSXciX2s9E+RyqJIIqGo+vJeN5AJVM98CXmW/Wux0nQ5L7jeWUdplCEf0Ee+tg==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/twbs"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/bootstrap"
+        }
+      ],
+      "license": "MIT",
+      "peer": true,
+      "peerDependencies": {
+        "@popperjs/core": "^2.11.8"
+      }
+    },
+    "node_modules/bootstrap-icons": {
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/bootstrap-icons/-/bootstrap-icons-1.13.1.tgz",
+      "integrity": "sha512-ijombt4v6bv5CLeXvRWKy7CuM3TRTuPEuGaGKvTV5cz65rQSY8RQ2JcHt6b90cBBAC7s8fsf2EkQDldzCoXUjw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/twbs"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/bootstrap"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/broker-factory": {
       "version": "3.1.15",
       "resolved": "https://registry.npmjs.org/broker-factory/-/broker-factory-3.1.15.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 8494c15..e1639ec 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -11,7 +11,9 @@
   },
   "dependencies": {
     "@tanstack/react-query": "^5.101.4",
+    "admin-lte": "^4.1.0",
     "axios": "^1.19.0",
+    "bootstrap-icons": "^1.13.1",
     "mqtt": "^5.15.2",
     "qrcode": "^1.5.4",
     "react": "^19.2.8",
diff --git a/frontend/src/components/desktop/ActivityTimeline.tsx b/frontend/src/components/desktop/ActivityTimeline.tsx
index 617cbba..9f4659d 100644
--- a/frontend/src/components/desktop/ActivityTimeline.tsx
+++ b/frontend/src/components/desktop/ActivityTimeline.tsx
@@ -14,20 +14,14 @@ export function ActivityTimeline({ items }: ActivityTimelineProps) {
   return (
     <Card title="Recent activity">
       {items.length === 0 ? (
-        <p className="text-sm text-gray-500 dark:text-gray-500">No activity yet.</p>
+        <p className="text-secondary mb-0">No activity yet.</p>
       ) : (
-        <ul className="flex flex-col gap-3">
+        <ul className="list-group list-group-flush">
           {items.map((item, i) => (
-            <li key={i} className="flex items-start gap-3 text-sm">
-              <span className="mt-1.5 h-1.5 w-1.5 shrink-0 rounded-full bg-blue-500" />
-              <div>
-                <p className="text-gray-800 dark:text-gray-200">
-                  <span className="font-medium">{item.actor_name}</span> — {item.action.replace('.', ' ')}
-                </p>
-                <p className="text-xs text-gray-500 dark:text-gray-500">
-                  {new Date(item.created_at).toLocaleString()}
-                </p>
-              </div>
+            <li key={i} className="list-group-item px-0">
+              <i className="bi bi-dot text-primary fs-4 align-middle"></i>
+              <span className="fw-semibold">{item.actor_name}</span> — {item.action.replace('.', ' ')}
+              <div className="text-secondary fs-7">{new Date(item.created_at).toLocaleString()}</div>
             </li>
           ))}
         </ul>
diff --git a/frontend/src/components/desktop/Card.tsx b/frontend/src/components/desktop/Card.tsx
index f85dd88..51c9348 100644
--- a/frontend/src/components/desktop/Card.tsx
+++ b/frontend/src/components/desktop/Card.tsx
@@ -7,9 +7,13 @@ interface CardProps {
 
 export function Card({ title, children }: CardProps) {
   return (
-    <div className="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-900">
-      {title && <h2 className="mb-3 text-sm font-semibold text-gray-900 dark:text-gray-100">{title}</h2>}
-      {children}
+    <div className="card">
+      {title && (
+        <div className="card-header">
+          <h3 className="card-title">{title}</h3>
+        </div>
+      )}
+      <div className="card-body">{children}</div>
     </div>
   )
 }
diff --git a/frontend/src/components/desktop/ChartPanel.tsx b/frontend/src/components/desktop/ChartPanel.tsx
index 0fef6d6..ef12922 100644
--- a/frontend/src/components/desktop/ChartPanel.tsx
+++ b/frontend/src/components/desktop/ChartPanel.tsx
@@ -5,7 +5,7 @@ interface ChartPanelProps {
   data: Record<string, number>
 }
 
-const BAR_COLOR = 'bg-blue-500'
+const BAR_COLORS = ['bg-primary', 'bg-success', 'bg-warning', 'bg-info', 'bg-danger']
 
 export function ChartPanel({ title, data }: ChartPanelProps) {
   const entries = Object.entries(data)
@@ -13,17 +13,20 @@ export function ChartPanel({ title, data }: ChartPanelProps) {
 
   return (
     <Card title={title}>
-      <div className="flex flex-col gap-2">
-        {entries.map(([label, value]) => (
-          <div key={label} className="flex items-center gap-3">
-            <span className="w-20 shrink-0 text-xs capitalize text-gray-600 dark:text-gray-400">{label}</span>
-            <div className="h-2 flex-1 overflow-hidden rounded-full bg-gray-100 dark:bg-gray-800">
-              <div className={`h-full ${BAR_COLOR}`} style={{ width: `${(value / max) * 100}%` }} />
-            </div>
-            <span className="w-6 shrink-0 text-right text-xs text-gray-500 dark:text-gray-500">{value}</span>
+      {entries.map(([label, value], i) => (
+        <div key={label} className="mb-3">
+          <div className="d-flex justify-content-between mb-1">
+            <span className="text-capitalize">{label}</span>
+            <span className="text-secondary">{value}</span>
           </div>
-        ))}
-      </div>
+          <div className="progress" role="progressbar" aria-valuenow={value} aria-valuemin={0} aria-valuemax={max}>
+            <div
+              className={`progress-bar ${BAR_COLORS[i % BAR_COLORS.length]}`}
+              style={{ width: `${(value / max) * 100}%` }}
+            ></div>
+          </div>
+        </div>
+      ))}
     </Card>
   )
 }
diff --git a/frontend/src/components/desktop/Footer.tsx b/frontend/src/components/desktop/Footer.tsx
new file mode 100644
index 0000000..cd4b332
--- /dev/null
+++ b/frontend/src/components/desktop/Footer.tsx
@@ -0,0 +1,8 @@
+export function Footer() {
+  return (
+    <footer className="app-footer">
+      <div className="float-end d-none d-sm-inline">v1.0.0</div>
+      <strong>Copyright &copy; {new Date().getFullYear()} webappAIO.</strong> All rights reserved.
+    </footer>
+  )
+}
diff --git a/frontend/src/components/desktop/InfoBox.tsx b/frontend/src/components/desktop/InfoBox.tsx
index 822c64c..fa8beaf 100644
--- a/frontend/src/components/desktop/InfoBox.tsx
+++ b/frontend/src/components/desktop/InfoBox.tsx
@@ -1,13 +1,20 @@
 interface InfoBoxProps {
   label: string
   value: string | number
+  icon: string
+  color?: string
 }
 
-export function InfoBox({ label, value }: InfoBoxProps) {
+export function InfoBox({ label, value, icon, color = 'text-bg-primary' }: InfoBoxProps) {
   return (
-    <div className="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-900">
-      <p className="text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-500">{label}</p>
-      <p className="mt-1 text-2xl font-semibold text-gray-900 dark:text-gray-100">{value}</p>
+    <div className="info-box">
+      <span className={`info-box-icon shadow-sm ${color}`}>
+        <i className={`bi ${icon}`}></i>
+      </span>
+      <div className="info-box-content">
+        <span className="info-box-text">{label}</span>
+        <span className="info-box-number">{value}</span>
+      </div>
     </div>
   )
 }
diff --git a/frontend/src/components/desktop/Navbar.tsx b/frontend/src/components/desktop/Navbar.tsx
index f36b038..186491b 100644
--- a/frontend/src/components/desktop/Navbar.tsx
+++ b/frontend/src/components/desktop/Navbar.tsx
@@ -1,27 +1,132 @@
-import { Link } from 'react-router-dom'
+import { useState, type FormEvent } from 'react'
+import { Link, useNavigate } from 'react-router-dom'
 import { useAuth } from '../../features/auth/AuthContext'
+import { useNotifications } from './useNotifications'
 
 export function Navbar() {
   const { user, logout } = useAuth()
+  const navigate = useNavigate()
+  const [search, setSearch] = useState('')
+  const notifications = useNotifications()
+
+  function handleSearch(e: FormEvent) {
+    e.preventDefault()
+    if (search.trim()) {
+      navigate(`/users?search=${encodeURIComponent(search.trim())}`)
+    }
+  }
 
   return (
-    <header className="flex h-14 items-center justify-between border-b border-gray-200 bg-white px-4 dark:border-gray-800 dark:bg-gray-900">
-      <span className="font-semibold text-gray-900 dark:text-gray-100">webappAIO</span>
-      <div className="flex items-center gap-3">
-        <span className="text-sm text-gray-600 dark:text-gray-400">{user?.name}</span>
-        <Link
-          to="/settings/2fa"
-          className="rounded-md px-2 py-1 text-sm text-gray-600 hover:bg-gray-100 dark:text-gray-400 dark:hover:bg-gray-800"
-        >
-          2FA Settings
-        </Link>
-        <button
-          onClick={() => logout()}
-          className="rounded-md px-2 py-1 text-sm text-gray-600 hover:bg-gray-100 dark:text-gray-400 dark:hover:bg-gray-800"
-        >
-          Sign out
-        </button>
+    <nav className="app-header navbar navbar-expand bg-body">
+      <div className="container-fluid">
+        <ul className="navbar-nav">
+          <li className="nav-item">
+            <a className="nav-link" data-lte-toggle="sidebar" href="#" role="button" aria-label="Toggle sidebar">
+              <i className="bi bi-list"></i>
+            </a>
+          </li>
+        </ul>
+
+        <form className="d-none d-md-flex ms-3" role="search" onSubmit={handleSearch}>
+          <input
+            type="search"
+            value={search}
+            onChange={(e) => setSearch(e.target.value)}
+            className="form-control form-control-sm"
+            placeholder="Search users…"
+            aria-label="Search"
+          />
+        </form>
+
+        <ul className="navbar-nav ms-auto">
+          <li className="nav-item dropdown">
+            <a
+              className="nav-link"
+              data-bs-toggle="dropdown"
+              href="#"
+              aria-label={`Notifications: ${notifications.length} unread`}
+            >
+              <i className="bi bi-bell-fill"></i>
+              {notifications.length > 0 && (
+                <span className="navbar-badge badge text-bg-warning">{notifications.length}</span>
+              )}
+            </a>
+            <div className="dropdown-menu dropdown-menu-lg dropdown-menu-end">
+              <span className="dropdown-item dropdown-header">{notifications.length} Notifications</span>
+              <div className="dropdown-divider"></div>
+              {notifications.length === 0 ? (
+                <span className="dropdown-item text-secondary">No new notifications</span>
+              ) : (
+                notifications.map((n, i) => (
+                  <div key={i}>
+                    <a href="#" className="dropdown-item">
+                      <i className="bi bi-person-fill me-2"></i>
+                      {n.message}
+                    </a>
+                    {i < notifications.length - 1 && <div className="dropdown-divider"></div>}
+                  </div>
+                ))
+              )}
+            </div>
+          </li>
+
+          <li className="nav-item dropdown">
+            <a
+              className="nav-link"
+              href="#"
+              id="bd-theme"
+              aria-label="Toggle color scheme"
+              data-bs-toggle="dropdown"
+              aria-expanded="false"
+            >
+              <i className="bi bi-sun-fill d-none" data-lte-theme-icon="light"></i>
+              <i className="bi bi-moon-fill" data-lte-theme-icon="dark"></i>
+              <i className="bi bi-circle-half d-none" data-lte-theme-icon="auto"></i>
+            </a>
+            <ul className="dropdown-menu dropdown-menu-end" aria-labelledby="bd-theme">
+              <li>
+                <button type="button" className="dropdown-item d-flex align-items-center" data-bs-theme-value="light">
+                  <i className="bi bi-sun-fill me-2"></i>Light
+                </button>
+              </li>
+              <li>
+                <button type="button" className="dropdown-item d-flex align-items-center" data-bs-theme-value="dark">
+                  <i className="bi bi-moon-fill me-2"></i>Dark
+                </button>
+              </li>
+              <li>
+                <button type="button" className="dropdown-item d-flex align-items-center" data-bs-theme-value="auto">
+                  <i className="bi bi-circle-half me-2"></i>Auto
+                </button>
+              </li>
+            </ul>
+          </li>
+
+          <li className="nav-item dropdown user-menu">
+            <a href="#" className="nav-link dropdown-toggle" data-bs-toggle="dropdown">
+              <i className="bi bi-person-circle fs-5"></i>
+              <span className="d-none d-md-inline ms-1">{user?.name}</span>
+            </a>
+            <ul className="dropdown-menu dropdown-menu-lg dropdown-menu-end">
+              <li className="user-header text-bg-primary">
+                <i className="bi bi-person-circle" style={{ fontSize: '3rem' }}></i>
+                <p>
+                  {user?.name}
+                  <small>{user?.roles.join(', ')}</small>
+                </p>
+              </li>
+              <li className="user-footer">
+                <Link to="/settings/2fa" className="btn btn-outline-secondary">
+                  2FA Settings
+                </Link>
+                <button onClick={() => logout()} className="btn btn-outline-danger float-end">
+                  Sign out
+                </button>
+              </li>
+            </ul>
+          </li>
+        </ul>
       </div>
-    </header>
+    </nav>
   )
 }
diff --git a/frontend/src/components/desktop/PageHeader.tsx b/frontend/src/components/desktop/PageHeader.tsx
new file mode 100644
index 0000000..dc23770
--- /dev/null
+++ b/frontend/src/components/desktop/PageHeader.tsx
@@ -0,0 +1,43 @@
+import { Link } from 'react-router-dom'
+
+export interface Breadcrumb {
+  label: string
+  to?: string
+}
+
+interface PageHeaderProps {
+  title: string
+  breadcrumbs: Breadcrumb[]
+}
+
+export function PageHeader({ title, breadcrumbs }: PageHeaderProps) {
+  return (
+    <div className="app-content-header">
+      <div className="container-fluid">
+        <div className="row">
+          <div className="col-sm-6">
+            <h1 className="mb-0 fs-3">{title}</h1>
+          </div>
+          <div className="col-sm-6">
+            <nav aria-label="breadcrumb">
+              <ol className="breadcrumb float-sm-end">
+                {breadcrumbs.map((crumb, i) => {
+                  const isLast = i === breadcrumbs.length - 1
+                  return (
+                    <li
+                      key={crumb.label}
+                      className={`breadcrumb-item ${isLast ? 'active' : ''}`}
+                      aria-current={isLast ? 'page' : undefined}
+                    >
+                      {!isLast && crumb.to ? <Link to={crumb.to}>{crumb.label}</Link> : crumb.label}
+                    </li>
+                  )
+                })}
+              </ol>
+            </nav>
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/frontend/src/components/desktop/Sidebar.tsx b/frontend/src/components/desktop/Sidebar.tsx
index eb4d937..581335e 100644
--- a/frontend/src/components/desktop/Sidebar.tsx
+++ b/frontend/src/components/desktop/Sidebar.tsx
@@ -1,30 +1,43 @@
+import { Fragment } from 'react'
 import { NavLink } from 'react-router-dom'
-import { NAV_ITEMS } from '../../layouts/shell/navConfig'
+import { NAV_GROUPS } from '../../layouts/shell/navConfig'
 import { usePermission } from '../../hooks/usePermission'
 
 export function Sidebar() {
   const { can } = usePermission()
-  const items = NAV_ITEMS.filter((item) => !item.permission || can(item.permission))
 
   return (
-    <aside className="hidden w-56 shrink-0 border-r border-gray-200 bg-white lg:block dark:border-gray-800 dark:bg-gray-900">
-      <nav className="flex flex-col gap-1 p-3">
-        {items.map((item) => (
-          <NavLink
-            key={item.to}
-            to={item.to}
-            className={({ isActive }) =>
-              `rounded-md px-3 py-2 text-sm font-medium ${
-                isActive
-                  ? 'bg-blue-50 text-blue-700 dark:bg-blue-950 dark:text-blue-400'
-                  : 'text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-gray-800'
-              }`
-            }
-          >
-            {item.label}
-          </NavLink>
-        ))}
-      </nav>
+    <aside className="app-sidebar bg-body-secondary shadow" data-bs-theme="dark">
+      <div className="sidebar-brand">
+        <a href="/dashboard" className="brand-link">
+          <span className="brand-text fw-light">webappAIO</span>
+        </a>
+      </div>
+
+      <div className="sidebar-wrapper">
+        <nav className="mt-2" aria-label="Main navigation">
+          <ul className="nav sidebar-menu flex-column" data-lte-toggle="treeview" data-accordion="false">
+            {NAV_GROUPS.map((group) => {
+              const items = group.items.filter((item) => !item.permission || can(item.permission))
+              if (items.length === 0) return null
+
+              return (
+                <Fragment key={group.header}>
+                  <li className="nav-header">{group.header}</li>
+                  {items.map((item) => (
+                    <li key={item.to} className="nav-item">
+                      <NavLink to={item.to} className={({ isActive }) => `nav-link ${isActive ? 'active' : ''}`}>
+                        <i className={`nav-icon bi ${item.icon}`}></i>
+                        <p>{item.label}</p>
+                      </NavLink>
+                    </li>
+                  ))}
+                </Fragment>
+              )
+            })}
+          </ul>
+        </nav>
+      </div>
     </aside>
   )
 }
diff --git a/frontend/src/components/desktop/SmallBox.tsx b/frontend/src/components/desktop/SmallBox.tsx
new file mode 100644
index 0000000..2ed8ae9
--- /dev/null
+++ b/frontend/src/components/desktop/SmallBox.tsx
@@ -0,0 +1,26 @@
+import { Link } from 'react-router-dom'
+
+interface SmallBoxProps {
+  value: string | number
+  label: string
+  icon: string
+  color?: string
+  to?: string
+}
+
+export function SmallBox({ value, label, icon, color = 'text-bg-primary', to }: SmallBoxProps) {
+  return (
+    <div className={`small-box ${color}`}>
+      <div className="inner">
+        <h3>{value}</h3>
+        <p>{label}</p>
+      </div>
+      <i className={`bi ${icon} small-box-icon`}></i>
+      {to && (
+        <Link to={to} className="small-box-footer link-light link-underline-opacity-0 link-underline-opacity-50-hover">
+          More info <i className="bi bi-arrow-right-short"></i>
+        </Link>
+      )}
+    </div>
+  )
+}
diff --git a/frontend/src/components/desktop/useNotifications.ts b/frontend/src/components/desktop/useNotifications.ts
new file mode 100644
index 0000000..d9f887a
--- /dev/null
+++ b/frontend/src/components/desktop/useNotifications.ts
@@ -0,0 +1,33 @@
+import { useState } from 'react'
+import { useMqttTopic } from '../../hooks/useMqtt'
+
+interface Notification {
+  message: string
+}
+
+interface UsersEventPayload {
+  type: 'UserCreated' | 'UserUpdated' | 'UserDeleted' | 'RoleAssigned'
+  user: { name: string }
+}
+
+const MESSAGES: Record<UsersEventPayload['type'], (name: string) => string> = {
+  UserCreated: (name) => `${name} was added.`,
+  UserUpdated: (name) => `${name} was updated.`,
+  UserDeleted: (name) => `${name} was removed.`,
+  RoleAssigned: (name) => `${name}'s role was changed.`,
+}
+
+const MAX_NOTIFICATIONS = 10
+
+/** Rolling list of recent Users-module events shown in the navbar bell. */
+export function useNotifications(): Notification[] {
+  const [notifications, setNotifications] = useState<Notification[]>([])
+
+  useMqttTopic('module/users/events', (payload) => {
+    const event = payload as UsersEventPayload
+    const message = MESSAGES[event.type]?.(event.user.name) ?? 'Users list updated.'
+    setNotifications((prev) => [{ message }, ...prev].slice(0, MAX_NOTIFICATIONS))
+  })
+
+  return notifications
+}
diff --git a/frontend/src/components/shared/DataTable.tsx b/frontend/src/components/shared/DataTable.tsx
index 353fee5..6e9d539 100644
--- a/frontend/src/components/shared/DataTable.tsx
+++ b/frontend/src/components/shared/DataTable.tsx
@@ -1,4 +1,5 @@
 import type { ReactNode } from 'react'
+import { Card } from '../desktop/Card'
 
 export interface DataTableColumn<T> {
   key: string
@@ -32,21 +33,22 @@ export function DataTable<T>({
   onPageChange,
   isLoading,
 }: DataTableProps<T>) {
+  const pages = Array.from({ length: lastPage }, (_, i) => i + 1)
+
   return (
-    <div className="overflow-hidden rounded-lg border border-gray-200 bg-white dark:border-gray-800 dark:bg-gray-900">
-      <div className="overflow-x-auto">
-        <table className="w-full text-left text-sm">
-          <thead className="border-b border-gray-200 bg-gray-50 dark:border-gray-800 dark:bg-gray-800/50">
+    <Card>
+      <div className="table-responsive">
+        <table className="table table-striped table-hover align-middle mb-0">
+          <thead>
             <tr>
               {columns.map((col) => (
-                <th key={col.key} className="px-4 py-2 font-medium text-gray-700 dark:text-gray-300">
+                <th key={col.key}>
                   {col.sortable ? (
                     <button
                       onClick={() => onSortChange?.(col.key)}
-                      className="flex items-center gap-1 hover:text-gray-900 dark:hover:text-gray-100"
+                      className="btn btn-link p-0 text-decoration-none fw-semibold"
                     >
-                      {col.label}
-                      {sort === col.key && <span>{direction === 'asc' ? '↑' : '↓'}</span>}
+                      {col.label} {sort === col.key && <i className={`bi bi-caret-${direction === 'asc' ? 'up' : 'down'}-fill`}></i>}
                     </button>
                   ) : (
                     col.label
@@ -58,23 +60,21 @@ export function DataTable<T>({
           <tbody>
             {isLoading ? (
               <tr>
-                <td colSpan={columns.length} className="px-4 py-6 text-center text-gray-500">
+                <td colSpan={columns.length} className="text-center text-secondary py-4">
                   Loading…
                 </td>
               </tr>
             ) : rows.length === 0 ? (
               <tr>
-                <td colSpan={columns.length} className="px-4 py-6 text-center text-gray-500">
+                <td colSpan={columns.length} className="text-center text-secondary py-4">
                   No results.
                 </td>
               </tr>
             ) : (
               rows.map((row) => (
-                <tr key={rowKey(row)} className="border-b border-gray-100 last:border-0 dark:border-gray-800">
+                <tr key={rowKey(row)}>
                   {columns.map((col) => (
-                    <td key={col.key} className="px-4 py-2 text-gray-800 dark:text-gray-200">
-                      {col.render(row)}
-                    </td>
+                    <td key={col.key}>{col.render(row)}</td>
                   ))}
                 </tr>
               ))
@@ -84,26 +84,28 @@ export function DataTable<T>({
       </div>
 
       {lastPage > 1 && (
-        <div className="flex items-center justify-between border-t border-gray-200 px-4 py-2 text-sm dark:border-gray-800">
-          <button
-            disabled={page <= 1}
-            onClick={() => onPageChange(page - 1)}
-            className="rounded-md px-2 py-1 text-gray-600 hover:bg-gray-100 disabled:opacity-40 dark:text-gray-400 dark:hover:bg-gray-800"
-          >
-            Previous
-          </button>
-          <span className="text-gray-500 dark:text-gray-500">
-            Page {page} of {lastPage}
-          </span>
-          <button
-            disabled={page >= lastPage}
-            onClick={() => onPageChange(page + 1)}
-            className="rounded-md px-2 py-1 text-gray-600 hover:bg-gray-100 disabled:opacity-40 dark:text-gray-400 dark:hover:bg-gray-800"
-          >
-            Next
-          </button>
-        </div>
+        <nav className="mt-3" aria-label="Table pagination">
+          <ul className="pagination pagination-sm justify-content-end mb-0">
+            <li className={`page-item ${page <= 1 ? 'disabled' : ''}`}>
+              <button className="page-link" onClick={() => onPageChange(page - 1)}>
+                Previous
+              </button>
+            </li>
+            {pages.map((p) => (
+              <li key={p} className={`page-item ${p === page ? 'active' : ''}`}>
+                <button className="page-link" onClick={() => onPageChange(p)}>
+                  {p}
+                </button>
+              </li>
+            ))}
+            <li className={`page-item ${page >= lastPage ? 'disabled' : ''}`}>
+              <button className="page-link" onClick={() => onPageChange(page + 1)}>
+                Next
+              </button>
+            </li>
+          </ul>
+        </nav>
       )}
-    </div>
+    </Card>
   )
 }
diff --git a/frontend/src/features/dashboard/DashboardPage.tsx b/frontend/src/features/dashboard/DashboardPage.tsx
index 78516fe..72fd441 100644
--- a/frontend/src/features/dashboard/DashboardPage.tsx
+++ b/frontend/src/features/dashboard/DashboardPage.tsx
@@ -2,7 +2,8 @@ import { useQuery, useQueryClient } from '@tanstack/react-query'
 import { useAuth } from '../auth/AuthContext'
 import { usePermission } from '../../hooks/usePermission'
 import { useMqttTopic } from '../../hooks/useMqtt'
-import { InfoBox } from '../../components/desktop/InfoBox'
+import { PageHeader } from '../../components/desktop/PageHeader'
+import { SmallBox } from '../../components/desktop/SmallBox'
 import { ChartPanel } from '../../components/desktop/ChartPanel'
 import { ActivityTimeline } from '../../components/desktop/ActivityTimeline'
 import { fetchStats, fetchActivity } from './dashboardApi'
@@ -24,20 +25,30 @@ export function DashboardPage() {
   })
 
   return (
-    <div>
-      <h1 className="text-lg font-semibold text-gray-900 dark:text-gray-100">Dashboard</h1>
-      <p className="mt-1 mb-6 text-sm text-gray-600 dark:text-gray-400">Welcome, {user?.name}.</p>
+    <>
+      <PageHeader title="Dashboard" breadcrumbs={[{ label: 'Home', to: '/dashboard' }, { label: 'Dashboard' }]} />
+      <div className="app-content">
+        <div className="container-fluid">
+          <p className="text-secondary">Welcome, {user?.name}.</p>
 
-      <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-3">
-        <InfoBox label="Total users" value={stats?.total_users ?? '—'} />
-        {stats && <ChartPanel title="Users by role" data={stats.users_by_role} />}
-      </div>
+          <div className="row">
+            <div className="col-lg-3 col-6">
+              <SmallBox value={stats?.total_users ?? '—'} label="Total Users" icon="bi-people-fill" to="/users" />
+            </div>
+            <div className="col-lg-6 col-12">
+              {stats && <ChartPanel title="Users by role" data={stats.users_by_role} />}
+            </div>
+          </div>
 
-      {can('audit.view') && (
-        <div className="mt-4">
-          <ActivityTimeline items={activity ?? []} />
+          {can('audit.view') && (
+            <div className="row">
+              <div className="col-12">
+                <ActivityTimeline items={activity ?? []} />
+              </div>
+            </div>
+          )}
         </div>
-      )}
-    </div>
+      </div>
+    </>
   )
 }
diff --git a/frontend/src/features/users/UsersListPage.tsx b/frontend/src/features/users/UsersListPage.tsx
index 198b660..c80bbb9 100644
--- a/frontend/src/features/users/UsersListPage.tsx
+++ b/frontend/src/features/users/UsersListPage.tsx
@@ -1,9 +1,11 @@
 import { useState } from 'react'
 import { useQuery, useQueryClient } from '@tanstack/react-query'
+import { useSearchParams } from 'react-router-dom'
 import { DataTable, type DataTableColumn } from '../../components/shared/DataTable'
 import { useConfirm } from '../../components/shared/ConfirmDialog'
 import { useToast } from '../../components/shared/Toast/ToastProvider'
 import { usePermission } from '../../hooks/usePermission'
+import { PageHeader } from '../../components/desktop/PageHeader'
 import { fetchUsers, deleteUser } from './usersApi'
 import { useUsersRealtime } from './useUsersRealtime'
 import { UserFormModal } from './UserFormModal'
@@ -17,6 +19,8 @@ export function UsersListPage() {
   const queryClient = useQueryClient()
   useUsersRealtime()
 
+  const [searchParams, setSearchParams] = useSearchParams()
+  const search = searchParams.get('search') ?? ''
   const [page, setPage] = useState(1)
   const [sort, setSort] = useState('created_at')
   const [direction, setDirection] = useState<'asc' | 'desc'>('desc')
@@ -24,8 +28,8 @@ export function UsersListPage() {
   const [roleUser, setRoleUser] = useState<User | null>(null)
 
   const { data, isLoading } = useQuery({
-    queryKey: ['users', { page, sort, direction }],
-    queryFn: () => fetchUsers({ page, sort, direction }),
+    queryKey: ['users', { page, sort, direction, search }],
+    queryFn: () => fetchUsers({ page, sort, direction, search: search || undefined }),
   })
 
   function handleSort(key: string) {
@@ -37,6 +41,11 @@ export function UsersListPage() {
     }
   }
 
+  function handleSearchChange(value: string) {
+    setPage(1)
+    setSearchParams(value ? { search: value } : {})
+  }
+
   async function handleDelete(user: User) {
     const ok = await confirm({
       title: 'Delete user',
@@ -55,24 +64,24 @@ export function UsersListPage() {
     { key: 'name', label: 'Name', sortable: true, render: (u) => u.name },
     { key: 'username', label: 'Username', sortable: true, render: (u) => u.username },
     { key: 'email', label: 'Email', sortable: true, render: (u) => u.email },
-    { key: 'roles', label: 'Role', render: (u) => u.roles.join(', ') },
+    { key: 'roles', label: 'Role', render: (u) => <span className="badge text-bg-secondary">{u.roles.join(', ')}</span> },
     {
       key: 'actions',
       label: '',
       render: (u) => (
-        <div className="flex gap-2">
+        <div className="btn-group btn-group-sm">
           {u.can_edit && (
-            <button onClick={() => setFormUser(u)} className="text-blue-600 hover:underline dark:text-blue-400">
+            <button onClick={() => setFormUser(u)} className="btn btn-outline-primary">
               Edit
             </button>
           )}
           {can('roles.assign') && (
-            <button onClick={() => setRoleUser(u)} className="text-blue-600 hover:underline dark:text-blue-400">
+            <button onClick={() => setRoleUser(u)} className="btn btn-outline-secondary">
               Role
             </button>
           )}
           {u.can_delete && (
-            <button onClick={() => handleDelete(u)} className="text-red-600 hover:underline dark:text-red-400">
+            <button onClick={() => handleDelete(u)} className="btn btn-outline-danger">
               Delete
             </button>
           )}
@@ -82,36 +91,44 @@ export function UsersListPage() {
   ]
 
   return (
-    <div>
-      <div className="mb-4 flex items-center justify-between">
-        <h1 className="text-lg font-semibold text-gray-900 dark:text-gray-100">Users</h1>
-        {can('users.create') && (
-          <button
-            onClick={() => setFormUser(null)}
-            className="rounded-md bg-blue-600 px-3 py-2 text-sm font-medium text-white hover:bg-blue-700"
-          >
-            Add user
-          </button>
-        )}
-      </div>
+    <>
+      <PageHeader title="Users" breadcrumbs={[{ label: 'Home', to: '/dashboard' }, { label: 'Users' }]} />
+      <div className="app-content">
+        <div className="container-fluid">
+          <div className="d-flex justify-content-between align-items-center mb-3">
+            <input
+              type="search"
+              defaultValue={search}
+              onChange={(e) => handleSearchChange(e.target.value)}
+              className="form-control form-control-sm w-auto"
+              placeholder="Search users…"
+            />
+            {can('users.create') && (
+              <button onClick={() => setFormUser(null)} className="btn btn-primary btn-sm">
+                <i className="bi bi-plus-lg me-1"></i>Add user
+              </button>
+            )}
+          </div>
 
-      <DataTable
-        columns={columns}
-        rows={data?.data ?? []}
-        rowKey={(u) => u.id}
-        sort={sort}
-        direction={direction}
-        onSortChange={handleSort}
-        page={page}
-        lastPage={data?.meta.last_page ?? 1}
-        onPageChange={setPage}
-        isLoading={isLoading}
-      />
+          <DataTable
+            columns={columns}
+            rows={data?.data ?? []}
+            rowKey={(u) => u.id}
+            sort={sort}
+            direction={direction}
+            onSortChange={handleSort}
+            page={page}
+            lastPage={data?.meta.last_page ?? 1}
+            onPageChange={setPage}
+            isLoading={isLoading}
+          />
+        </div>
+      </div>
 
       {formUser !== undefined && (
         <UserFormModal open onClose={() => setFormUser(undefined)} user={formUser ?? undefined} />
       )}
       {roleUser && <AssignRoleModal open onClose={() => setRoleUser(null)} user={roleUser} />}
-    </div>
+    </>
   )
 }
diff --git a/frontend/src/index.css b/frontend/src/index.css
index ec8f88b..cf003e6 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -1,9 +1,14 @@
-@import "tailwindcss";
+/* AdminLTE (Bootstrap 5) supplies the base/reset layer for the desktop shell.
+   Tailwind is imported utilities-only (no preflight) so its reset doesn't
+   fight Bootstrap's — both utility systems coexist: AdminLTE/Bootstrap
+   classes drive the desktop dashboard, Tailwind utilities style everything
+   else (mobile shell, modals, forms, login page). */
+@import "bootstrap-icons/font/bootstrap-icons.min.css";
+@import "admin-lte/dist/css/adminlte.min.css";
+
+@import "tailwindcss/theme.css" layer(theme);
+@import "tailwindcss/utilities.css" layer(utilities);
 
 :root {
   color-scheme: light dark;
 }
-
-body {
-  margin: 0;
-}
diff --git a/frontend/src/layouts/shell/DesktopShell.tsx b/frontend/src/layouts/shell/DesktopShell.tsx
index 907791a..caf4aaa 100644
--- a/frontend/src/layouts/shell/DesktopShell.tsx
+++ b/frontend/src/layouts/shell/DesktopShell.tsx
@@ -1,17 +1,28 @@
+import { useEffect } from 'react'
 import { Outlet } from 'react-router-dom'
 import { Navbar } from '../../components/desktop/Navbar'
 import { Sidebar } from '../../components/desktop/Sidebar'
+import { Footer } from '../../components/desktop/Footer'
+
+const BODY_CLASSES = ['layout-fixed', 'sidebar-expand-lg', 'bg-body-tertiary']
 
 export function DesktopShell() {
+  // AdminLTE's layout CSS keys off classes on <body>, not a scoped wrapper —
+  // add them only while the desktop shell is mounted so the mobile shell
+  // (Tailwind-only) isn't affected.
+  useEffect(() => {
+    document.body.classList.add(...BODY_CLASSES)
+    return () => document.body.classList.remove(...BODY_CLASSES)
+  }, [])
+
   return (
-    <div className="flex h-screen flex-col">
+    <div className="app-wrapper">
       <Navbar />
-      <div className="flex flex-1 overflow-hidden">
-        <Sidebar />
-        <main className="flex-1 overflow-y-auto bg-gray-50 p-6 dark:bg-gray-950">
-          <Outlet />
-        </main>
-      </div>
+      <Sidebar />
+      <main className="app-main">
+        <Outlet />
+      </main>
+      <Footer />
     </div>
   )
 }
diff --git a/frontend/src/layouts/shell/navConfig.ts b/frontend/src/layouts/shell/navConfig.ts
index 9d064e1..d42f989 100644
--- a/frontend/src/layouts/shell/navConfig.ts
+++ b/frontend/src/layouts/shell/navConfig.ts
@@ -1,10 +1,24 @@
 export interface NavItem {
   label: string
   to: string
+  icon: string
   permission?: string
 }
 
-export const NAV_ITEMS: NavItem[] = [
-  { label: 'Dashboard', to: '/dashboard', permission: 'dashboard.view' },
-  { label: 'Users', to: '/users', permission: 'users.view' },
+export interface NavGroup {
+  header: string
+  items: NavItem[]
+}
+
+export const NAV_GROUPS: NavGroup[] = [
+  {
+    header: 'MAIN',
+    items: [{ label: 'Dashboard', to: '/dashboard', icon: 'bi-speedometer', permission: 'dashboard.view' }],
+  },
+  {
+    header: 'ADMINISTRATION',
+    items: [{ label: 'Users', to: '/users', icon: 'bi-people-fill', permission: 'users.view' }],
+  },
 ]
+
+export const NAV_ITEMS: NavItem[] = NAV_GROUPS.flatMap((g) => g.items)
diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index bef5202..a367f65 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -1,6 +1,13 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import './index.css'
+// Bootstrap's own JS (dropdowns, the navbar/user-menu use data-bs-toggle)
+// is a separate concern from AdminLTE's plugins below.
+import 'bootstrap/dist/js/bootstrap.bundle.min.js'
+// Side-effect import: binds AdminLTE's delegated document-level click
+// listeners (sidebar toggle, treeview, card widgets, fullscreen, color
+// mode) once at app startup — works across all client-side route changes.
+import 'admin-lte'
 import App from './App.tsx'
 
 createRoot(document.getElementById('root')!).render(