diff --git a/dashboard/live.html b/dashboard/live.html
index f2bb8f2..99d8f5d 100644
--- a/dashboard/live.html
+++ b/dashboard/live.html
@@ -28,6 +28,7 @@
     <link rel="stylesheet" href="css/quick-actions.css">
     <link rel="stylesheet" href="css/briefing.css">
     <link rel="stylesheet" href="css/simulator.css">
+    <link rel="stylesheet" href="static/css/mobile.css">
     <style>
         * {
             margin: 0;
@@ -4495,5 +4496,7 @@
         }
     })();
     </script>
+    <!-- Mobile Responsive Expert Mode -->
+    <script type="module" src="static/js/mobile.js"></script>
 </body>
 </html>
diff --git a/dashboard/static/css/mobile.css b/dashboard/static/css/mobile.css
new file mode 100644
index 0000000..a1eed19
--- /dev/null
+++ b/dashboard/static/css/mobile.css
@@ -0,0 +1,482 @@
+/* ============================================
+   Mobile-Responsive Expert Mode Styles
+   ============================================ */
+
+/* Hamburger menu button in status bar */
+.mobile-hamburger {
+    display: none;
+    position: absolute;
+    left: var(--space-3);
+    top: 50%;
+    transform: translateY(-50%);
+    background: transparent;
+    border: none;
+    width: 44px;
+    height: 44px;
+    cursor: pointer;
+    padding: 10px;
+    z-index: 101;
+}
+
+.mobile-hamburger span {
+    display: block;
+    width: 24px;
+    height: 2px;
+    background: var(--text-primary);
+    margin: 5px 0;
+    transition: background var(--transition-fast);
+    border-radius: 2px;
+}
+
+.mobile-hamburger:hover span {
+    background: var(--color-primary);
+}
+
+.mobile-hamburger:active span {
+    background: var(--color-primary-hover);
+}
+
+/* Active state (X icon) */
+.mobile-hamburger.active span:nth-child(1) {
+    transform: rotate(45deg) translate(5px, 5px);
+}
+
+.mobile-hamburger.active span:nth-child(2) {
+    opacity: 0;
+}
+
+.mobile-hamburger.active span:nth-child(3) {
+    transform: rotate(-45deg) translate(7px, -6px);
+}
+
+/* Mobile navigation overlay */
+.mobile-nav-overlay {
+    display: none;
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: var(--overlay-strong);
+    z-index: 998;
+    opacity: 0;
+    transition: opacity var(--transition-fast);
+}
+
+.mobile-nav-overlay.visible {
+    opacity: 1;
+}
+
+/* Mobile navigation panel */
+.mobile-nav-panel {
+    display: none;
+    position: fixed;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    width: 280px;
+    max-width: 85vw;
+    background: var(--bg-card);
+    z-index: 999;
+    transform: translateX(-100%);
+    transition: transform var(--transition-normal);
+    overflow-y: auto;
+    -webkit-overflow-scrolling: touch;
+    box-shadow: 2px 0 16px var(--shadow-xl);
+}
+
+.mobile-nav-panel.visible {
+    transform: translateX(0);
+}
+
+.mobile-nav-panel-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: var(--space-4);
+    border-bottom: 1px solid var(--border-default);
+    min-height: 56px;
+}
+
+.mobile-nav-panel-title {
+    font-size: var(--text-lg);
+    font-weight: var(--fw-heading);
+    color: var(--text-primary);
+}
+
+.mobile-nav-close {
+    background: transparent;
+    border: none;
+    width: 44px;
+    height: 44px;
+    cursor: pointer;
+    color: var(--text-secondary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 24px;
+    border-radius: var(--radius-control);
+    transition: background var(--transition-fast);
+}
+
+.mobile-nav-close:hover {
+    background: var(--bg-hover);
+    color: var(--text-primary);
+}
+
+/* Mobile nav section headers */
+.mobile-nav-section {
+    border-bottom: 1px solid var(--border-subtle);
+}
+
+.mobile-nav-section-header {
+    padding: var(--space-3) var(--space-4);
+    font-size: var(--text-xs);
+    font-weight: var(--fw-heading);
+    color: var(--text-muted);
+    text-transform: uppercase;
+    letter-spacing: 0.05em;
+}
+
+/* Mobile nav list items */
+.mobile-nav-list {
+    list-style: none;
+    padding: 0;
+    margin: 0;
+}
+
+.mobile-nav-item {
+    border-bottom: 1px solid var(--border-subtle);
+}
+
+.mobile-nav-item:last-child {
+    border-bottom: none;
+}
+
+.mobile-nav-link {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    width: 100%;
+    padding: var(--space-3) var(--space-4);
+    min-height: 48px;
+    background: transparent;
+    border: none;
+    color: var(--text-primary);
+    font-size: var(--text-sm);
+    font-family: var(--font-body);
+    text-align: left;
+    cursor: pointer;
+    transition: background var(--transition-fast);
+    -webkit-tap-highlight-color: transparent;
+}
+
+.mobile-nav-link:hover {
+    background: var(--bg-hover);
+}
+
+.mobile-nav-link:active {
+    background: var(--bg-active);
+}
+
+.mobile-nav-link-icon {
+    display: flex;
+    align-items: center;
+    gap: var(--space-3);
+}
+
+.mobile-nav-link-chevron {
+    color: var(--text-muted);
+    font-size: 18px;
+}
+
+/* Bottom sheet panel */
+.mobile-bottom-sheet {
+    display: none;
+    position: fixed;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    max-height: 70vh;
+    background: var(--bg-card);
+    border-radius: var(--radius-card) var(--radius-card) 0 0;
+    box-shadow: 0 -4px 24px var(--shadow-xl);
+    z-index: 997;
+    transform: translateY(100%);
+    transition: transform var(--transition-normal);
+    overflow: hidden;
+    -webkit-overflow-scrolling: touch;
+}
+
+.mobile-bottom-sheet.visible {
+    transform: translateY(0);
+}
+
+/* Bottom sheet drag handle */
+.mobile-bottom-sheet-handle {
+    width: 100%;
+    height: 32px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    cursor: grab;
+    flex-shrink: 0;
+    touch-action: none;
+}
+
+.mobile-bottom-sheet-handle:active {
+    cursor: grabbing;
+}
+
+.mobile-bottom-sheet-handle-bar {
+    width: 40px;
+    height: 4px;
+    background: var(--border-default);
+    border-radius: 2px;
+}
+
+/* Bottom sheet header */
+.mobile-bottom-sheet-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: var(--space-3) var(--space-4);
+    border-bottom: 1px solid var(--border-subtle);
+    min-height: 48px;
+}
+
+.mobile-bottom-sheet-title {
+    font-size: var(--text-base);
+    font-weight: var(--fw-heading);
+    color: var(--text-primary);
+}
+
+.mobile-bottom-sheet-close {
+    background: transparent;
+    border: none;
+    width: 44px;
+    height: 44px;
+    cursor: pointer;
+    color: var(--text-secondary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 20px;
+    border-radius: var(--radius-control);
+    transition: background var(--transition-fast);
+}
+
+.mobile-bottom-sheet-close:hover {
+    background: var(--bg-hover);
+    color: var(--text-primary);
+}
+
+/* Bottom sheet content */
+.mobile-bottom-sheet-content {
+    padding: var(--space-3);
+    overflow-y: auto;
+    max-height: calc(70vh - 80px);
+}
+
+/* Mobile list items */
+.mobile-list {
+    list-style: none;
+    padding: 0;
+    margin: 0;
+}
+
+.mobile-list-item {
+    padding: var(--space-3);
+    border-bottom: 1px solid var(--border-subtle);
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+}
+
+.mobile-list-item:last-child {
+    border-bottom: none;
+}
+
+.mobile-list-item-label {
+    font-size: var(--text-sm);
+    color: var(--text-primary);
+}
+
+.mobile-list-item-value {
+    font-size: var(--text-sm);
+    color: var(--text-secondary);
+}
+
+.mobile-list-item-badge {
+    display: inline-flex;
+    align-items: center;
+    padding: 2px 8px;
+    border-radius: var(--radius-pill);
+    font-size: var(--text-xs);
+    font-weight: var(--fw-medium);
+}
+
+.mobile-list-item-badge--success {
+    background: var(--green-9);
+    color: var(--green-2);
+}
+
+.mobile-list-item-badge--warning {
+    background: var(--yellow-9);
+    color: var(--yellow-2);
+}
+
+.mobile-list-item-badge--error {
+    background: var(--red-9);
+    color: var(--red-2);
+}
+
+.mobile-list-item-badge--info {
+    background: var(--blue-9);
+    color: var(--blue-2);
+}
+
+/* Mobile zone items */
+.mobile-zone-item {
+    padding: var(--space-3);
+    border-bottom: 1px solid var(--border-subtle);
+    border-left: 3px solid transparent;
+    min-height: 44px;
+}
+
+.mobile-zone-item--armed {
+    border-left-color: var(--color-arming-armed);
+    background: rgba(var(--color-arming-armed-rgb), 0.1);
+}
+
+.mobile-zone-item--disarmed {
+    border-left-color: var(--color-arming-disarmed);
+}
+
+.mobile-zone-item-name {
+    font-size: var(--text-sm);
+    font-weight: var(--fw-medium);
+    color: var(--text-primary);
+    margin-bottom: var(--space-1);
+}
+
+.mobile-zone-item-details {
+    display: flex;
+    justify-content: space-between;
+    font-size: var(--text-xs);
+    color: var(--text-secondary);
+}
+
+/* Mobile trigger items */
+.mobile-trigger-item {
+    padding: var(--space-3);
+    border-bottom: 1px solid var(--border-subtle);
+    min-height: 44px;
+}
+
+.mobile-trigger-item-name {
+    font-size: var(--text-sm);
+    font-weight: var(--fw-medium);
+    color: var(--text-primary);
+    margin-bottom: var(--space-1);
+}
+
+.mobile-trigger-item-condition {
+    font-size: var(--text-xs);
+    color: var(--text-secondary);
+}
+
+/* Mobile settings items */
+.mobile-settings-item {
+    padding: var(--space-3);
+    border-bottom: 1px solid var(--border-subtle);
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+}
+
+.mobile-settings-label {
+    font-size: var(--text-sm);
+    color: var(--text-primary);
+}
+
+.mobile-settings-toggle {
+    width: 52px;
+    height: 32px;
+    background: var(--slate-7);
+    border-radius: var(--radius-pill);
+    position: relative;
+    cursor: pointer;
+    transition: background var(--transition-fast);
+}
+
+.mobile-settings-toggle--on {
+    background: var(--color-primary);
+}
+
+.mobile-settings-toggle-knob {
+    position: absolute;
+    top: 4px;
+    left: 4px;
+    width: 24px;
+    height: 24px;
+    background: white;
+    border-radius: 50%;
+    transition: transform var(--transition-fast);
+    box-shadow: 0 2px 4px var(--shadow-md);
+}
+
+.mobile-settings-toggle--on .mobile-settings-toggle-knob {
+    transform: translateX(20px);
+}
+
+/* Mobile breakpoint: show hamburger and mobile nav */
+@media (max-width: 767px) {
+    .mobile-hamburger {
+        display: flex;
+        flex-direction: column;
+        justify-content: center;
+        align-items: center;
+    }
+
+    .mobile-nav-overlay,
+    .mobile-nav-panel,
+    .mobile-bottom-sheet {
+        display: block;
+    }
+
+    /* Adjust status bar to account for hamburger */
+    .live-status-bar {
+        padding-left: calc(var(--space-3) + 44px);
+    }
+
+    /* Hide desktop panels on mobile */
+    .live-panel--left,
+    .live-panel--right,
+    .live-panel--presence,
+    #node-panel,
+    #presence-panel {
+        display: none !important;
+    }
+}
+
+/* Extra small devices */
+@media (max-width: 374px) {
+    .mobile-nav-panel {
+        width: 100%;
+        max-width: 100%;
+    }
+}
+
+/* Safe area support for notched devices */
+@supports (padding: max(0px)) {
+    .mobile-bottom-sheet {
+        padding-bottom: env(safe-area-inset-bottom);
+    }
+
+    .mobile-nav-panel {
+        padding-top: env(safe-area-inset-top);
+    }
+}
diff --git a/dashboard/static/js/mobile.js b/dashboard/static/js/mobile.js
new file mode 100644
index 0000000..36f635c
--- /dev/null
+++ b/dashboard/static/js/mobile.js
@@ -0,0 +1,711 @@
+/**
+ * Spaxel Dashboard - Mobile Expert Mode
+ *
+ * Mobile-responsive enhancements for expert mode:
+ * - Hamburger menu for panel navigation
+ * - Bottom sheet panels for mobile
+ * - Touch-optimized interactions
+ * - No hover-dependent UI
+ */
+
+(function() {
+    'use strict';
+
+    // ============================================
+    // State
+    // ============================================
+    let hamburgerMenu = null;
+    let mobileNavOpen = false;
+    let activeBottomSheet = null;
+
+    // ============================================
+    // Configuration
+    // ============================================
+    const MOBILE_BREAKPOINT = 768; // px
+    const BOTTOM_SHEET_MAX_HEIGHT = '70vh';
+    const BOTTOM_SHEET_MIN_HEIGHT = '40vh';
+
+    // ============================================
+    // Hamburger Menu
+    // ============================================
+
+    /**
+     * Create hamburger menu button
+     */
+    function createHamburgerMenu() {
+        if (document.getElementById('mobile-hamburger')) {
+            return;
+        }
+
+        const hamburger = document.createElement('button');
+        hamburger.id = 'mobile-hamburger';
+        hamburger.className = 'mobile-hamburger';
+        hamburger.setAttribute('aria-label', 'Open menu');
+        hamburger.setAttribute('aria-expanded', 'false');
+        hamburger.innerHTML = `
+            <span class="hamburger-line"></span>
+            <span class="hamburger-line"></span>
+            <span class="hamburger-line"></span>
+        `;
+
+        hamburger.addEventListener('click', toggleMobileNav);
+
+        // Insert into status bar
+        const statusBar = document.getElementById('status-bar');
+        if (statusBar) {
+            statusBar.insertBefore(hamburger, statusBar.firstChild);
+        }
+
+        hamburgerMenu = hamburger;
+        console.log('[Mobile] Hamburger menu created');
+    }
+
+    /**
+     * Toggle mobile navigation
+     */
+    function toggleMobileNav() {
+        mobileNavOpen = !mobileNavOpen;
+
+        if (mobileNavOpen) {
+            openMobileNav();
+        } else {
+            closeMobileNav();
+        }
+    }
+
+    /**
+     * Open mobile navigation
+     */
+    function openMobileNav() {
+        mobileNavOpen = true;
+
+        if (hamburgerMenu) {
+            hamburgerMenu.classList.add('active');
+            hamburgerMenu.setAttribute('aria-expanded', 'true');
+        }
+
+        // Close any open bottom sheets
+        closeActiveBottomSheet();
+
+        // Create mobile nav overlay
+        let navOverlay = document.getElementById('mobile-nav-overlay');
+        if (!navOverlay) {
+            navOverlay = document.createElement('div');
+            navOverlay.id = 'mobile-nav-overlay';
+            navOverlay.className = 'mobile-nav-overlay';
+            navOverlay.addEventListener('click', closeMobileNav);
+            document.body.appendChild(navOverlay);
+        }
+
+        // Create mobile nav panel
+        let navPanel = document.getElementById('mobile-nav-panel');
+        if (!navPanel) {
+            navPanel = createMobileNavPanel();
+            document.body.appendChild(navPanel);
+        }
+
+        // Show navigation
+        requestAnimationFrame(() => {
+            navOverlay.classList.add('visible');
+            navPanel.classList.add('visible');
+        });
+
+        // Disable OrbitControls
+        if (window.Viz3D && window.Viz3D.controls) {
+            const controls = window.Viz3D.controls();
+            if (controls) controls.enabled = false;
+        }
+    }
+
+    /**
+     * Close mobile navigation
+     */
+    function closeMobileNav() {
+        mobileNavOpen = false;
+
+        if (hamburgerMenu) {
+            hamburgerMenu.classList.remove('active');
+            hamburgerMenu.setAttribute('aria-expanded', 'false');
+        }
+
+        const navOverlay = document.getElementById('mobile-nav-overlay');
+        const navPanel = document.getElementById('mobile-nav-panel');
+
+        if (navOverlay) navOverlay.classList.remove('visible');
+        if (navPanel) navPanel.classList.remove('visible');
+
+        // Re-enable OrbitControls
+        if (window.Viz3D && window.Viz3D.controls) {
+            const controls = window.Viz3D.controls();
+            if (controls) controls.enabled = true;
+        }
+    }
+
+    /**
+     * Create mobile navigation panel
+     */
+    function createMobileNavPanel() {
+        const panel = document.createElement('div');
+        panel.id = 'mobile-nav-panel';
+        panel.className = 'mobile-nav-panel';
+
+        // Panel sections
+        const sections = [
+            {
+                title: 'Panels',
+                items: [
+                    { id: 'fleet-status', label: 'Fleet Status', icon: '📡', action: openFleetStatus },
+                    { id: 'zones', label: 'Zones', icon: '🏠', action: openZonesPanel },
+                    { id: 'triggers', label: 'Automation', icon: '⚡', action: openTriggersPanel },
+                    { id: 'settings', label: 'Settings', icon: '⚙️', action: openSettingsPanel }
+                ]
+            },
+            {
+                title: 'View',
+                items: [
+                    { id: 'reset-view', label: 'Reset View', icon: '🎯', action: resetView },
+                    { id: 'toggle-layers', label: 'Toggle Layers', icon: '👁️', action: toggleLayers },
+                    { id: 'simple-mode', label: 'Simple Mode', icon: '📱', action: switchToSimpleMode }
+                ]
+            }
+        ];
+
+        let html = '<div class="mobile-nav-content">';
+
+        sections.forEach(section => {
+            html += `
+                <div class="mobile-nav-section">
+                    <h3 class="mobile-nav-section-title">${section.title}</h3>
+                    <div class="mobile-nav-items">
+            `;
+
+            section.items.forEach(item => {
+                html += `
+                    <button class="mobile-nav-item" data-action="${item.id}">
+                        <span class="mobile-nav-icon">${item.icon}</span>
+                        <span class="mobile-nav-label">${item.label}</span>
+                    </button>
+                `;
+            });
+
+            html += `
+                    </div>
+                </div>
+            `;
+        });
+
+        html += '</div>';
+
+        panel.innerHTML = html;
+
+        // Add event listeners
+        panel.querySelectorAll('.mobile-nav-item').forEach(item => {
+            item.addEventListener('click', (e) => {
+                const actionId = e.currentTarget.dataset.action;
+                handleMobileNavAction(actionId);
+            });
+        });
+
+        return panel;
+    }
+
+    /**
+     * Handle mobile navigation actions
+     */
+    function handleMobileNavAction(actionId) {
+        closeMobileNav();
+
+        // Small delay to allow nav to close before opening panel
+        setTimeout(() => {
+            switch (actionId) {
+                case 'fleet-status':
+                    openFleetStatus();
+                    break;
+                case 'zones':
+                    openZonesPanel();
+                    break;
+                case 'triggers':
+                    openTriggersPanel();
+                    break;
+                case 'settings':
+                    openSettingsPanel();
+                    break;
+                case 'reset-view':
+                    resetView();
+                    break;
+                case 'toggle-layers':
+                    toggleLayers();
+                    break;
+                case 'simple-mode':
+                    if (window.SpaxelRouter) {
+                        window.SpaxelRouter.navigate('simple');
+                    }
+                    break;
+            }
+        }, 300);
+    }
+
+    // ============================================
+    // Panel Actions
+    // ============================================
+
+    function openFleetStatus() {
+        if (window.SpaxelPanels) {
+            openBottomSheet('fleet-status', 'Fleet Status', createFleetStatusContent());
+        }
+    }
+
+    function openZonesPanel() {
+        if (window.SpaxelPanels) {
+            openBottomSheet('zones', 'Zones', createZonesContent());
+        }
+    }
+
+    function openTriggersPanel() {
+        if (window.SpaxelPanels) {
+            openBottomSheet('triggers', 'Automation Triggers', createTriggersContent());
+        }
+    }
+
+    function openSettingsPanel() {
+        if (window.SpaxelPanels) {
+            openBottomSheet('settings', 'Settings', createSettingsContent());
+        }
+    }
+
+    function resetView() {
+        if (window.Viz3D && window.Viz3D.resetView) {
+            window.Viz3D.resetView();
+        }
+    }
+
+    function toggleLayers() {
+        if (window.Viz3D && window.Viz3D.toggleLayers) {
+            window.Viz3D.toggleLayers();
+        }
+    }
+
+    // ============================================
+    // Bottom Sheet Panels (Mobile)
+    // ============================================
+
+    /**
+     * Open bottom sheet panel on mobile
+     */
+    function openBottomSheet(id, title, content) {
+        if (!isMobile()) {
+            // On desktop, use regular sidebar
+            window.SpaxelPanels.openSidebar({
+                title: title,
+                content: content,
+                width: '360px',
+                position: 'right'
+            });
+            return;
+        }
+
+        // Close existing bottom sheet
+        closeActiveBottomSheet();
+
+        // Create bottom sheet
+        const sheet = document.createElement('div');
+        sheet.id = `bottom-sheet-${id}`;
+        sheet.className = 'mobile-bottom-sheet';
+
+        sheet.innerHTML = `
+            <div class="bottom-sheet-handle"></div>
+            <div class="bottom-sheet-header">
+                <h2 class="bottom-sheet-title">${title}</h2>
+                <button class="bottom-sheet-close" aria-label="Close">&times;</button>
+            </div>
+            <div class="bottom-sheet-content"></div>
+        `;
+
+        // Add content
+        const contentEl = sheet.querySelector('.bottom-sheet-content');
+        if (typeof content === 'string') {
+            contentEl.innerHTML = content;
+        } else if (content instanceof HTMLElement) {
+            contentEl.appendChild(content);
+        } else if (typeof content === 'function') {
+            const result = content(contentEl);
+            if (result instanceof HTMLElement) {
+                contentEl.innerHTML = '';
+                contentEl.appendChild(result);
+            }
+        }
+
+        // Close button handler
+        sheet.querySelector('.bottom-sheet-close').addEventListener('click', closeActiveBottomSheet);
+
+        // Handle drag to close
+        setupBottomSheetDrag(sheet);
+
+        // Add to DOM
+        document.body.appendChild(sheet);
+
+        // Disable OrbitControls
+        if (window.Viz3D && window.Viz3D.controls) {
+            const controls = window.Viz3D.controls();
+            if (controls) controls.enabled = false;
+        }
+
+        // Show with animation
+        requestAnimationFrame(() => {
+            sheet.classList.add('visible');
+        });
+
+        activeBottomSheet = sheet;
+
+        console.log('[Mobile] Bottom sheet opened:', id);
+    }
+
+    /**
+     * Close active bottom sheet
+     */
+    function closeActiveBottomSheet() {
+        if (!activeBottomSheet) return;
+
+        const sheet = activeBottomSheet;
+
+        sheet.classList.remove('visible');
+
+        setTimeout(() => {
+            if (sheet.parentNode) {
+                sheet.parentNode.removeChild(sheet);
+            }
+
+            // Re-enable OrbitControls
+            if (window.Viz3D && window.Viz3D.controls) {
+                const controls = window.Viz3D.controls();
+                if (controls) controls.enabled = true;
+            }
+
+            activeBottomSheet = null;
+        }, 300);
+    }
+
+    /**
+     * Set up bottom sheet drag to close
+     */
+    function setupBottomSheetDrag(sheet) {
+        const handle = sheet.querySelector('.bottom-sheet-handle');
+        const content = sheet.querySelector('.bottom-sheet-content');
+        let startY = 0;
+        let currentY = 0;
+        let isDragging = false;
+
+        handle.addEventListener('touchstart', (e) => {
+            startY = e.touches[0].clientY;
+            isDragging = true;
+        }, { passive: true });
+
+        handle.addEventListener('touchmove', (e) => {
+            if (!isDragging) return;
+
+            currentY = e.touches[0].clientY;
+            const deltaY = currentY - startY;
+
+            // Only allow dragging down
+            if (deltaY > 0) {
+                const translateY = Math.min(deltaY, window.innerHeight * 0.7);
+                sheet.style.transform = `translateY(${translateY}px)`;
+            }
+        }, { passive: true });
+
+        handle.addEventListener('touchend', () => {
+            if (!isDragging) return;
+            isDragging = false;
+
+            const deltaY = currentY - startY;
+
+            // If dragged more than 100px down, close the sheet
+            if (deltaY > 100) {
+                closeActiveBottomSheet();
+            } else {
+                // Reset position
+                sheet.style.transform = '';
+            }
+        });
+    }
+
+    // ============================================
+    // Content Generators
+    // ============================================
+
+    function createFleetStatusContent(container) {
+        // Fetch fleet status
+        fetch('/api/nodes')
+            .then(response => response.json())
+            .then(nodes => {
+                if (nodes.length === 0) {
+                    container.innerHTML = '<div class="mobile-empty">No nodes found</div>';
+                    return;
+                }
+
+                let html = '<div class="mobile-list">';
+
+                nodes.forEach(node => {
+                    const statusClass = node.status === 'online' ? 'status-online' :
+                                       node.status === 'stale' ? 'status-stale' : 'status-offline';
+                    html += `
+                        <div class="mobile-list-item" data-mac="${node.mac}">
+                            <div class="mobile-list-status ${statusClass}"></div>
+                            <div class="mobile-list-content">
+                                <div class="mobile-list-title">${node.name || node.mac}</div>
+                                <div class="mobile-list-subtitle">${node.role || 'Unknown'} • ${node.firmware_version || 'Unknown'}</div>
+                            </div>
+                            <button class="mobile-list-action" aria-label="Options">›</button>
+                        </div>
+                    `;
+                });
+
+                html += '</div>';
+
+                container.innerHTML = html;
+
+                // Add click handlers
+                container.querySelectorAll('.mobile-list-item').forEach(item => {
+                    const mac = item.dataset.mac;
+                    item.addEventListener('click', () => {
+                        // Open node details
+                        if (window.SpatialQuickActions) {
+                            const node = nodes.find(n => n.mac === mac);
+                            if (node) {
+                                window.SpatialQuickActions.show(
+                                    window.innerWidth / 2,
+                                    window.innerHeight / 2,
+                                    'node',
+                                    node
+                                );
+                            }
+                        }
+                    });
+                });
+            })
+            .catch(error => {
+                console.error('[Mobile] Error fetching fleet status:', error);
+                container.innerHTML = '<div class="mobile-error">Failed to load fleet status</div>';
+            });
+    }
+
+    function createZonesContent(container) {
+        // Fetch zones
+        fetch('/api/zones')
+            .then(response => response.json())
+            .then(zones => {
+                if (zones.length === 0) {
+                    container.innerHTML = '<div class="mobile-empty">No zones defined</div>';
+                    return;
+                }
+
+                let html = '<div class="mobile-list">';
+
+                zones.forEach(zone => {
+                    const occupancy = zone.occupancy || 0;
+                    const people = zone.people || [];
+                    html += `
+                        <div class="mobile-list-item" data-zone-id="${zone.id}">
+                            <div class="mobile-list-icon">🏠</div>
+                            <div class="mobile-list-content">
+                                <div class="mobile-list-title">${zone.name}</div>
+                                <div class="mobile-list-subtitle">${occupancy} person${occupancy !== 1 ? 's' : ''}</div>
+                            </div>
+                            <button class="mobile-list-action" aria-label="Options">›</button>
+                        </div>
+                    `;
+                });
+
+                html += '</div>';
+
+                container.innerHTML = html;
+
+                // Add click handlers
+                container.querySelectorAll('.mobile-list-item').forEach(item => {
+                    const zoneId = item.dataset.zoneId;
+                    item.addEventListener('click', () => {
+                        const zone = zones.find(z => z.id == zoneId);
+                        if (zone && window.SpatialQuickActions) {
+                            window.SpatialQuickActions.show(
+                                window.innerWidth / 2,
+                                window.innerHeight / 2,
+                                'zone',
+                                zone
+                            );
+                        }
+                    });
+                });
+            })
+            .catch(error => {
+                console.error('[Mobile] Error fetching zones:', error);
+                container.innerHTML = '<div class="mobile-error">Failed to load zones</div>';
+            });
+    }
+
+    function createTriggersContent(container) {
+        // Fetch triggers
+        fetch('/api/triggers')
+            .then(response => response.json())
+            .then(triggers => {
+                if (triggers.length === 0) {
+                    container.innerHTML = '<div class="mobile-empty">No automation triggers</div>';
+                    return;
+                }
+
+                let html = '<div class="mobile-list">';
+
+                triggers.forEach(trigger => {
+                    const enabledClass = trigger.enabled ? 'trigger-enabled' : 'trigger-disabled';
+                    html += `
+                        <div class="mobile-list-item" data-trigger-id="${trigger.id}">
+                            <div class="mobile-list-icon ${enabledClass}">⚡</div>
+                            <div class="mobile-list-content">
+                                <div class="mobile-list-title">${trigger.name}</div>
+                                <div class="mobile-list-subtitle">${trigger.condition || 'Unknown condition'}</div>
+                            </div>
+                            <button class="mobile-list-action" aria-label="Options">›</button>
+                        </div>
+                    `;
+                });
+
+                html += '</div>';
+
+                container.innerHTML = html;
+
+                // Add click handlers
+                container.querySelectorAll('.mobile-list-item').forEach(item => {
+                    const triggerId = item.dataset.triggerId;
+                    item.addEventListener('click', () => {
+                        const trigger = triggers.find(t => t.id == triggerId);
+                        if (trigger && window.SpatialQuickActions) {
+                            window.SpatialQuickActions.show(
+                                window.innerWidth / 2,
+                                window.innerHeight / 2,
+                                'trigger',
+                                trigger
+                            );
+                        }
+                    });
+                });
+            })
+            .catch(error => {
+                console.error('[Mobile] Error fetching triggers:', error);
+                container.innerHTML = '<div class="mobile-error">Failed to load triggers</div>';
+            });
+    }
+
+    function createSettingsContent() {
+        return `
+            <div class="mobile-list">
+                <div class="mobile-list-item" data-setting="detection">
+                    <div class="mobile-list-icon">🎯</div>
+                    <div class="mobile-list-content">
+                        <div class="mobile-list-title">Detection</div>
+                        <div class="mobile-list-subtitle">Thresholds & sensitivity</div>
+                    </div>
+                    <button class="mobile-list-action">›</button>
+                </div>
+                <div class="mobile-list-item" data-setting="display">
+                    <div class="mobile-list-icon">🎨</div>
+                    <div class="mobile-list-content">
+                        <div class="mobile-list-title">Display</div>
+                        <div class="mobile-list-subtitle">Appearance & layers</div>
+                    </div>
+                    <button class="mobile-list-action">›</button>
+                </div>
+                <div class="mobile-list-item" data-setting="notifications">
+                    <div class="mobile-list-icon">🔔</div>
+                    <div class="mobile-list-content">
+                        <div class="mobile-list-title">Notifications</div>
+                        <div class="mobile-list-subtitle">Alerts & push</div>
+                    </div>
+                    <button class="mobile-list-action">›</button>
+                </div>
+                <div class="mobile-list-item" data-setting="integrations">
+                    <div class="mobile-list-icon">🔗</div>
+                    <div class="mobile-list-content">
+                        <div class="mobile-list-title">Integrations</div>
+                        <div class="mobile-list-subtitle">Home Assistant, MQTT</div>
+                    </div>
+                    <button class="mobile-list-action">›</button>
+                </div>
+                <div class="mobile-list-item" data-setting="help">
+                    <div class="mobile-list-icon">❓</div>
+                    <div class="mobile-list-content">
+                        <div class="mobile-list-title">Help & Troubleshooting</div>
+                        <div class="mobile-list-subtitle">Guides & diagnostics</div>
+                    </div>
+                    <button class="mobile-list-action">›</button>
+                </div>
+            </div>
+        `;
+    }
+
+    // ============================================
+    // Utilities
+    // ============================================
+
+    /**
+     * Check if on mobile device
+     */
+    function isMobile() {
+        return window.innerWidth < MOBILE_BREAKPOINT ||
+               ('ontouchstart' in window && navigator.maxTouchPoints > 0);
+    }
+
+    /**
+     * Update hamburger menu visibility based on screen size
+     */
+    function updateHamburgerVisibility() {
+        if (!hamburgerMenu) return;
+
+        if (isMobile()) {
+            hamburgerMenu.style.display = 'flex';
+        } else {
+            hamburgerMenu.style.display = 'none';
+            closeMobileNav();
+        }
+    }
+
+    // ============================================
+    // Public API
+    // ============================================
+    window.MobileExpertMode = {
+        init: init,
+        openNav: openMobileNav,
+        closeNav: closeMobileNav,
+        openBottomSheet: openBottomSheet,
+        closeBottomSheet: closeActiveBottomSheet,
+        isMobile: isMobile
+    };
+
+    // ============================================
+    // Initialization
+    // ============================================
+    function init() {
+        console.log('[Mobile] Initializing mobile expert mode...');
+
+        // Create hamburger menu
+        createHamburgerMenu();
+
+        // Update visibility on resize
+        window.addEventListener('resize', updateHamburgerVisibility);
+        updateHamburgerVisibility();
+
+        // Handle orientation changes
+        window.addEventListener('orientationchange', () => {
+            setTimeout(updateHamburgerVisibility, 100);
+        });
+
+        console.log('[Mobile] Mobile expert mode initialized');
+    }
+
+    // Auto-initialize when DOM is ready
+    if (document.readyState === 'loading') {
+        document.addEventListener('DOMContentLoaded', init);
+    } else {
+        init();
+    }
+
+    console.log('[Mobile] Module loaded');
+})();