diff --git a/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.html b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.html
new file mode 100644
index 0000000..c51fffa
--- /dev/null
+++ b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.html
@@ -0,0 +1,112 @@
+<!-- ======================================================================== -->
+<!-- Adaptive Navigation — Desktop sidebar / Mobile header                    -->
+<!-- Desktop (≥768px): 72px sidebar with full navigation items                -->
+<!-- Mobile (<768px):  56px compact header with hamburger menu                -->
+<!-- ======================================================================== -->
+
+<!-- ======================= DESKTOP SIDEBAR (≥768px) ======================= -->
+<aside class="adaptive-nav__sidebar" aria-label="Navigation sidebar">
+  <!-- Brand / Toggle header -->
+  <div class="adaptive-nav__sidebar-header">
+    <span class="adaptive-nav__brand">OC</span>
+  </div>
+
+  <!-- Navigation destinations -->
+  <nav class="adaptive-nav__sidebar-nav">
+    @for (dest of destinations; track dest.route) {
+      <a
+        class="adaptive-nav__sidebar-item"
+        [routerLink]="dest.route"
+        routerLinkActive="adaptive-nav__sidebar-item--active"
+        [attr.aria-label]="dest.label"
+      >
+        <mat-icon
+          [matBadge]="dest.badge ?? 0"
+          [matBadgeHidden]="!dest.badge"
+          matBadgePosition="above after"
+          matBadgeSize="small"
+        >
+          {{ dest.icon }}
+        </mat-icon>
+        <span class="adaptive-nav__sidebar-label">{{ dest.label }}</span>
+      </a>
+    }
+  </nav>
+
+  <!-- Sidebar footer: LIVE indicator + action buttons -->
+  <div class="adaptive-nav__sidebar-footer">
+    <div class="adaptive-nav__live" [class.adaptive-nav__live--connected]="isConnected()">
+      <span
+        class="adaptive-nav__live-dot"
+        [class.adaptive-nav__live-dot--connected]="isConnected()"
+      ></span>
+      <mat-chip
+        class="adaptive-nav__live-chip"
+        [highlighted]="isConnected()"
+        [disabled]="!isConnected()"
+      >
+        {{ isConnected() ? 'LIVE' : 'OFFLINE' }}
+      </mat-chip>
+    </div>
+
+    <!-- Action buttons (placeholder) -->
+    <div class="adaptive-nav__sidebar-actions">
+      <button mat-icon-button aria-label="Notifications">
+        <mat-icon>notifications</mat-icon>
+      </button>
+      <button mat-icon-button aria-label="Settings">
+        <mat-icon>settings</mat-icon>
+      </button>
+    </div>
+  </div>
+</aside>
+
+<!-- ======================= MOBILE HEADER (<768px) ======================== -->
+<header class="adaptive-nav__mobile-header" role="banner">
+  <!-- Hamburger menu button -->
+  <button
+    class="adaptive-nav__hamburger"
+    mat-icon-button
+    [attr.aria-label]="mobileMenuOpen() ? 'Close menu' : 'Open menu'"
+    [attr.aria-expanded]="mobileMenuOpen()"
+    (click)="toggleMobileMenu()"
+  >
+    <mat-icon>{{ mobileMenuOpen() ? 'close' : 'menu' }}</mat-icon>
+  </button>
+
+  <!-- Title -->
+  <h1 class="adaptive-nav__mobile-title">Command Hub</h1>
+
+  <!-- LIVE indicator (always visible on mobile) -->
+  <div class="adaptive-nav__live adaptive-nav__live--mobile" [class.adaptive-nav__live--connected]="isConnected()">
+    <span
+      class="adaptive-nav__live-dot"
+      [class.adaptive-nav__live-dot--connected]="isConnected()"
+    ></span>
+    <span class="adaptive-nav__live-text">{{ isConnected() ? 'LIVE' : 'OFFLINE' }}</span>
+  </div>
+
+  <!-- Mobile action buttons (placeholder) -->
+  <button class="adaptive-nav__mobile-action" mat-icon-button aria-label="Notifications">
+    <mat-icon>notifications</mat-icon>
+  </button>
+</header>
+
+<!-- ======================= MOBILE DRAWER OVERLAY ========================= -->
+@if (mobileMenuOpen()) {
+  <div class="adaptive-nav__overlay" (click)="closeMobileMenu()" role="presentation"></div>
+  <nav class="adaptive-nav__mobile-drawer" aria-label="Mobile navigation menu">
+    @for (dest of destinations; track dest.route) {
+      <a
+        class="adaptive-nav__drawer-item"
+        [routerLink]="dest.route"
+        routerLinkActive="adaptive-nav__drawer-item--active"
+        [attr.aria-label]="dest.label"
+        (click)="closeMobileMenu()"
+      >
+        <mat-icon>{{ dest.icon }}</mat-icon>
+        <span class="adaptive-nav__drawer-label">{{ dest.label }}</span>
+      </a>
+    }
+  </nav>
+}
\ No newline at end of file
diff --git a/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.scss b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.scss
new file mode 100644
index 0000000..27fbd5b
--- /dev/null
+++ b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.scss
@@ -0,0 +1,316 @@
+// ============================================================================
+// Adaptive Navigation — Desktop sidebar / Mobile header
+// Desktop (≥768px): 72px sidebar with full navigation items
+// Mobile (<768px):  56px compact header with hamburger menu
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// Desktop Sidebar (visible ≥768px)
+// ---------------------------------------------------------------------------
+.adaptive-nav__sidebar {
+  display: flex;
+  flex-direction: column;
+  width: var(--cc-nav-rail-collapsed-width, 72px);
+  min-height: 100vh;
+  background-color: var(--cc-surface-container-high);
+  border-right: 1px solid var(--cc-outline);
+  z-index: 10;
+}
+
+.adaptive-nav__sidebar-header {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 64px;
+  border-bottom: 1px solid var(--cc-outline);
+}
+
+.adaptive-nav__brand {
+  font-size: 18px;
+  font-weight: 700;
+  color: var(--status-active);
+  letter-spacing: 0.04em;
+}
+
+.adaptive-nav__sidebar-nav {
+  flex: 1;
+  padding-top: 8px;
+}
+
+.adaptive-nav__sidebar-item {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 4px;
+  min-height: 56px;
+  padding: 8px 0;
+  margin: 2px 8px;
+  border-radius: 28px;
+  color: var(--cc-on-surface-variant);
+  text-decoration: none;
+  transition: background-color 150ms ease, color 150ms ease;
+
+  &:hover {
+    background-color: rgba(255, 255, 255, 0.08);
+    color: var(--cc-on-surface);
+  }
+
+  &--active {
+    background-color: var(--status-active-bg);
+    color: var(--status-active);
+
+    .adaptive-nav__sidebar-label {
+      font-weight: 500;
+    }
+  }
+}
+
+.adaptive-nav__sidebar-label {
+  font-size: 11px;
+  font-weight: 400;
+  letter-spacing: 0.02em;
+  white-space: nowrap;
+}
+
+// ---------------------------------------------------------------------------
+// Sidebar Footer — LIVE indicator + action buttons
+// ---------------------------------------------------------------------------
+.adaptive-nav__sidebar-footer {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  padding: 12px 0 20px;
+  border-top: 1px solid var(--cc-outline);
+}
+
+.adaptive-nav__sidebar-actions {
+  display: flex;
+  gap: 4px;
+
+  .mat-mdc-icon-button {
+    color: var(--cc-on-surface-variant) !important;
+    --mdc-icon-button-icon-size: 20px;
+
+    &:hover {
+      color: var(--cc-on-surface) !important;
+    }
+  }
+}
+
+// ---------------------------------------------------------------------------
+// LIVE Status Indicator
+// ---------------------------------------------------------------------------
+.adaptive-nav__live {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 4px 8px;
+  border-radius: 16px;
+  transition: background-color 200ms ease;
+
+  &--connected {
+    background-color: var(--status-active-bg);
+  }
+}
+
+.adaptive-nav__live-dot {
+  display: inline-block;
+  width: 8px;
+  height: 8px;
+  min-width: 8px;
+  border-radius: 50%;
+  background-color: var(--status-error);
+  transition: background-color 200ms ease;
+
+  &--connected {
+    background-color: var(--status-active);
+    animation: pulse-active 2s ease-in-out infinite;
+  }
+}
+
+.adaptive-nav__live-chip {
+  font-size: 11px !important;
+  font-weight: 600 !important;
+  letter-spacing: 0.06em;
+  height: 24px !important;
+  min-height: 24px !important;
+  padding: 0 8px !important;
+  color: var(--status-active) !important;
+  --mdc-chip-elevated-container-color: transparent;
+  background: transparent !important;
+  border: none !important;
+  box-shadow: none !important;
+}
+
+.adaptive-nav__live-text {
+  font-size: 12px;
+  font-weight: 600;
+  letter-spacing: 0.06em;
+  color: var(--status-active);
+}
+
+// ---------------------------------------------------------------------------
+// Mobile Header (visible <768px)
+// ---------------------------------------------------------------------------
+.adaptive-nav__mobile-header {
+  display: none; // Hidden on desktop, shown on mobile via media query
+  align-items: center;
+  height: 56px;
+  padding: 0 12px;
+  background-color: var(--cc-surface-container-high);
+  border-bottom: 1px solid var(--cc-outline);
+  z-index: 20;
+  gap: 8px;
+}
+
+.adaptive-nav__hamburger {
+  color: var(--cc-on-surface-variant) !important;
+
+  &:hover {
+    color: var(--cc-on-surface) !important;
+  }
+}
+
+.adaptive-nav__mobile-title {
+  flex: 1;
+  font-size: 20px;
+  font-weight: 500;
+  color: var(--cc-on-surface);
+  margin: 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.adaptive-nav__live--mobile {
+  padding: 4px 10px;
+  border-radius: 16px;
+
+  .adaptive-nav__live-text {
+    font-size: 11px;
+    font-weight: 700;
+  }
+}
+
+.adaptive-nav__mobile-action {
+  color: var(--cc-on-surface-variant) !important;
+
+  &:hover {
+    color: var(--cc-on-surface) !important;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Mobile Drawer
+// ---------------------------------------------------------------------------
+.adaptive-nav__overlay {
+  position: fixed;
+  inset: 0;
+  background-color: rgba(0, 0, 0, 0.5);
+  z-index: 40;
+}
+
+.adaptive-nav__mobile-drawer {
+  position: fixed;
+  top: 56px; // Below header
+  left: 0;
+  bottom: 0;
+  width: 280px;
+  max-width: 80vw;
+  background-color: var(--cc-surface-container);
+  border-right: 1px solid var(--cc-outline);
+  z-index: 50;
+  padding: 12px 0;
+  overflow-y: auto;
+  animation: slide-in-left 200ms cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.adaptive-nav__drawer-item {
+  display: flex;
+  align-items: center;
+  gap: 16px;
+  min-height: 48px;
+  padding: 0 20px;
+  color: var(--cc-on-surface-variant);
+  text-decoration: none;
+  transition: background-color 150ms ease, color 150ms ease;
+
+  &:hover {
+    background-color: rgba(255, 255, 255, 0.08);
+    color: var(--cc-on-surface);
+  }
+
+  &--active {
+    background-color: var(--status-active-bg);
+    color: var(--status-active);
+
+    .adaptive-nav__drawer-label {
+      font-weight: 500;
+    }
+  }
+}
+
+.adaptive-nav__drawer-label {
+  font-size: 14px;
+  font-weight: 400;
+  white-space: nowrap;
+}
+
+// ---------------------------------------------------------------------------
+// Drawer slide-in animation
+// ---------------------------------------------------------------------------
+@keyframes slide-in-left {
+  from {
+    transform: translateX(-100%);
+  }
+  to {
+    transform: translateX(0);
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Media Queries — Layout Switch
+// ---------------------------------------------------------------------------
+// Desktop (≥768px): Show sidebar, hide mobile header
+// Mobile (<768px):  Hide sidebar, show compact header
+// ---------------------------------------------------------------------------
+@media (min-width: 768px) {
+  .adaptive-nav__sidebar {
+    display: flex;
+  }
+
+  .adaptive-nav__mobile-header {
+    display: none;
+  }
+
+  // Hide mobile drawer and overlay on desktop
+  .adaptive-nav__overlay,
+  .adaptive-nav__mobile-drawer {
+    display: none;
+  }
+}
+
+@media (max-width: 767px) {
+  .adaptive-nav__sidebar {
+    display: none;
+  }
+
+  .adaptive-nav__mobile-header {
+    display: flex;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Accessibility: Reduced Motion
+// ---------------------------------------------------------------------------
+@media (prefers-reduced-motion: reduce) {
+  .adaptive-nav__live-dot--connected {
+    animation: none;
+  }
+
+  .adaptive-nav__mobile-drawer {
+    animation: none;
+  }
+}
\ No newline at end of file
diff --git a/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.ts b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.ts
new file mode 100644
index 0000000..77adc96
--- /dev/null
+++ b/frontend/src/app/components/adaptive-navigation/adaptive-navigation.component.ts
@@ -0,0 +1,53 @@
+import { ChangeDetectionStrategy, Component, signal } from '@angular/core';
+import { RouterLink, RouterLinkActive } from '@angular/router';
+import { MatIconModule } from '@angular/material/icon';
+import { MatButtonModule } from '@angular/material/button';
+import { MatChipsModule } from '@angular/material/chips';
+import { MatBadgeModule } from '@angular/material/badge';
+import { NAV_DESTINATIONS } from '../../models/nav.model';
+
+/**
+ * Adaptive Navigation Component — switches between desktop sidebar
+ * and mobile header layouts using CSS media queries.
+ *
+ * Desktop (≥768px): 72px sidebar with full navigation items.
+ * Mobile (<768px):  56px compact header with hamburger menu.
+ *
+ * The LIVE status indicator is visible in both layouts.
+ * Per spec Section 3.1 (kiosk) and 3.2 (mobile).
+ */
+@Component({
+  selector: 'app-adaptive-navigation',
+  standalone: true,
+  imports: [
+    RouterLink,
+    RouterLinkActive,
+    MatIconModule,
+    MatButtonModule,
+    MatChipsModule,
+    MatBadgeModule,
+  ],
+  templateUrl: './adaptive-navigation.component.html',
+  styleUrl: './adaptive-navigation.component.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class AdaptiveNavigationComponent {
+  /** Navigation destinations shared with other nav components */
+  protected readonly destinations = NAV_DESTINATIONS;
+
+  /** Whether the mobile drawer is open */
+  protected readonly mobileMenuOpen = signal(false);
+
+  /** Live connection status */
+  protected readonly isConnected = signal(true);
+
+  /** Toggle mobile menu */
+  toggleMobileMenu(): void {
+    this.mobileMenuOpen.update((v) => !v);
+  }
+
+  /** Close mobile menu (e.g. on nav) */
+  closeMobileMenu(): void {
+    this.mobileMenuOpen.set(false);
+  }
+}
\ No newline at end of file
diff --git a/frontend/src/app/components/adaptive-navigation/index.ts b/frontend/src/app/components/adaptive-navigation/index.ts
new file mode 100644
index 0000000..c154a5e
--- /dev/null
+++ b/frontend/src/app/components/adaptive-navigation/index.ts
@@ -0,0 +1 @@
+export * from './adaptive-navigation.component';
\ No newline at end of file