diff --git a/app/assets/stylesheets/hamburgers.css b/app/assets/stylesheets/hamburgers.css
new file mode 100644
index 00000000..91eab57c
--- /dev/null
+++ b/app/assets/stylesheets/hamburgers.css
@@ -0,0 +1,124 @@
+/*!
+ * Hamburgers - Spring variant only
+ * @description Tasty CSS-animated hamburgers
+ * @author Jonathan Suh @jonsuh
+ * @site https://jonsuh.com/hamburgers
+ * @link https://github.com/jonsuh/hamburgers
+ * @license MIT
+ *
+ * Compiled to plain CSS with default variables for use without Sass.
+ * Layer width: 24px, height: 2px, spacing: 5px (scaled for nav bar)
+ */
+
+.hamburger {
+  padding: 10px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  transition-property: opacity, filter;
+  transition-duration: 0.15s;
+  transition-timing-function: linear;
+  font: inherit;
+  color: inherit;
+  text-transform: none;
+  background-color: transparent;
+  border: 0;
+  margin: 0;
+  overflow: visible;
+  min-height: 44px;
+  min-width: 44px;
+}
+
+.hamburger:hover {
+  opacity: 0.7;
+}
+
+.hamburger.is-active:hover {
+  opacity: 0.7;
+}
+
+.hamburger.is-active .hamburger-inner,
+.hamburger.is-active .hamburger-inner::before,
+.hamburger.is-active .hamburger-inner::after {
+  background-color: #000;
+}
+
+.hamburger-box {
+  width: 24px;
+  height: 14px; /* 2*3 + 5*2 - but with top offset: layer-height*2 + spacing*2 */
+  display: inline-block;
+  position: relative;
+}
+
+.hamburger-inner {
+  display: block;
+  top: 50%;
+  margin-top: -1px; /* layer-height / -2 */
+}
+
+.hamburger-inner,
+.hamburger-inner::before,
+.hamburger-inner::after {
+  width: 24px;
+  height: 2px;
+  background-color: #000;
+  border-radius: 2px;
+  position: absolute;
+  transition-property: transform;
+  transition-duration: 0.15s;
+  transition-timing-function: ease;
+}
+
+.hamburger-inner::before,
+.hamburger-inner::after {
+  content: "";
+  display: block;
+}
+
+.hamburger-inner::before {
+  top: -7px; /* -(spacing + layer-height) = -(5+2) */
+}
+
+.hamburger-inner::after {
+  bottom: -7px; /* -(spacing + layer-height) = -(5+2) */
+}
+
+/*
+ * Spring
+ */
+.hamburger--spring .hamburger-inner {
+  top: 1px; /* layer-height / 2 */
+  transition: background-color 0s 0.13s linear;
+}
+
+.hamburger--spring .hamburger-inner::before {
+  top: 7px; /* layer-height + spacing = 2 + 5 */
+  transition: top 0.1s 0.2s cubic-bezier(0.33333, 0.66667, 0.66667, 1),
+              transform 0.13s cubic-bezier(0.55, 0.055, 0.675, 0.19);
+}
+
+.hamburger--spring .hamburger-inner::after {
+  top: 14px; /* (layer-height * 2) + (spacing * 2) = 4 + 10 */
+  transition: top 0.2s 0.2s cubic-bezier(0.33333, 0.66667, 0.66667, 1),
+              transform 0.13s cubic-bezier(0.55, 0.055, 0.675, 0.19);
+}
+
+.hamburger--spring.is-active .hamburger-inner {
+  transition-delay: 0.22s;
+  background-color: transparent !important;
+}
+
+.hamburger--spring.is-active .hamburger-inner::before {
+  top: 0;
+  transition: top 0.1s 0.15s cubic-bezier(0.33333, 0, 0.66667, 0.33333),
+              transform 0.13s 0.22s cubic-bezier(0.215, 0.61, 0.355, 1);
+  transform: translate3d(0, 7px, 0) rotate(45deg); /* spacing + layer-height = 5 + 2 */
+}
+
+.hamburger--spring.is-active .hamburger-inner::after {
+  top: 0;
+  transition: top 0.2s cubic-bezier(0.33333, 0, 0.66667, 0.33333),
+              transform 0.13s 0.22s cubic-bezier(0.215, 0.61, 0.355, 1);
+  transform: translate3d(0, 7px, 0) rotate(-45deg); /* spacing + layer-height = 5 + 2 */
+}
diff --git a/app/components/layouts/mobile_menu.rb b/app/components/layouts/mobile_menu.rb
index 5c205dce..c8a6e038 100644
--- a/app/components/layouts/mobile_menu.rb
+++ b/app/components/layouts/mobile_menu.rb
@@ -17,17 +17,24 @@ def view_template
         div(class: 'md:hidden') do
           render RubyUI::Sheet.new do
             render RubyUI::SheetTrigger.new do
-              render RubyUI::Button.new(variant: :ghost, size: :icon, aria: { label: 'Open menu' }) do
-                render Icons::Menu.new(class: 'h-6 w-6')
+              button(
+                type: 'button',
+                class: 'hamburger hamburger--spring',
+                aria: { label: 'Open menu', expanded: 'false' }
+              ) do
+                span(class: 'hamburger-box') do
+                  span(class: 'hamburger-inner')
+                end
               end
             end
 
-            render RubyUI::SheetContent.new(side: :left, class: 'w-[300px] sm:w-[400px]') do
-              render RubyUI::SheetHeader.new do
+            render RubyUI::SheetContent.new(side: :left) do
+              render RubyUI::SheetHeader.new(class: 'flex flex-row items-center justify-between') do
                 render(RubyUI::SheetTitle.new { 'MedTracker' })
+                close_drawer_button
               end
 
-              div(class: 'grid gap-4 py-4') do
+              div(class: 'py-4') do
                 render_navigation_links
               end
 
@@ -41,6 +48,41 @@ def view_template
 
       private
 
+      def close_drawer_button
+        button(
+          type: 'button',
+          class: 'rounded-sm p-2 opacity-70 ring-offset-background transition-opacity ' \
+                 'hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 ' \
+                 'min-h-[44px] min-w-[44px] flex items-center justify-center',
+          data_action: 'click->ruby-ui--sheet-content#close',
+          aria: { label: 'Close menu' }
+        ) do
+          svg(
+            width: '15',
+            height: '15',
+            viewbox: '0 0 15 15',
+            fill: 'none',
+            xmlns: 'http://www.w3.org/2000/svg',
+            class: 'h-4 w-4',
+            aria_hidden: 'true'
+          ) do |s|
+            s.path(
+              d: 'M11.7816 4.03157C12.0062 3.80702 12.0062 3.44295 11.7816 3.2184C11.5571 2.99385 ' \
+                 '11.193 2.99385 10.9685 3.2184L7.50005 6.68682L4.03164 3.2184C3.80708 2.99385 ' \
+                 '3.44301 2.99385 3.21846 3.2184C2.99391 3.44295 2.99391 3.80702 3.21846 4.03157L6.68688 ' \
+                 '7.49999L3.21846 10.9684C2.99391 11.193 2.99391 11.557 3.21846 11.7816C3.44301 12.0061 ' \
+                 '3.80708 12.0061 4.03164 11.7816L7.50005 8.31316L10.9685 11.7816C11.193 12.0061 11.5571 ' \
+                 '12.0061 11.7816 11.7816C12.0062 11.557 12.0062 11.193 11.7816 10.9684L8.31322 ' \
+                 '7.49999L11.7816 4.03157Z',
+              fill: 'currentColor',
+              fill_rule: 'evenodd',
+              clip_rule: 'evenodd'
+            )
+          end
+          span(class: 'sr-only') { 'Close menu' }
+        end
+      end
+
       def render_navigation_links
         div(class: 'flex flex-col gap-2') do
           render RubyUI::Link.new(href: medicines_path, variant: :ghost, size: :xl,
diff --git a/app/components/ruby_ui/sheet/sheet_content.rb b/app/components/ruby_ui/sheet/sheet_content.rb
index 3e18e970..4a82f0ee 100644
--- a/app/components/ruby_ui/sheet/sheet_content.rb
+++ b/app/components/ruby_ui/sheet/sheet_content.rb
@@ -62,10 +62,11 @@ def close_button
 
     def background
       div(
-        data_state: 'open',
-        class: 'fixed inset-0 z-50 bg-black/80 backdrop-blur-sm data-[state=open]:animate-in',
+        data_testid: 'drawer-backdrop',
+        data_action: 'click->ruby-ui--sheet-content#close',
+        class: 'fixed inset-0 z-50 bg-black/80 backdrop-blur-sm transition-opacity duration-300 ' \
+               'data-[state=open]:opacity-100 data-[state=closed]:opacity-0',
         style: 'pointer-events:auto',
-        data_aria_hidden: 'true',
         aria_hidden: 'true'
       )
     end
@@ -73,20 +74,30 @@ def background
     def container(&)
       div(
         role: 'dialog',
-        data_state: 'open',
-        class: 'flex flex-col fixed left-[50%] top-[50%] z-50 w-full max-w-lg max-h-screen overflow-y-auto translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=open]:fade-in-0 data-[state=open]:zoom-in-95 sm:rounded-lg md:w-full',
+        aria_modal: 'true',
+        aria_label: 'Navigation menu',
+        tabindex: '-1',
+        class: [
+          'flex flex-col fixed z-50 h-full w-[80vw] max-w-[300px] overflow-y-auto bg-background p-6 shadow-lg transition-transform duration-300 ease-in-out',
+          'data-[state=open]:translate-x-0',
+          side_transform_class
+        ],
         style: 'pointer-events:auto',
         &
       )
     end
 
-    def backdrop
-      div(
-        data_state: 'open',
-        data_action: 'click->ruby-ui--sheet-content#close',
-        class:
-              'fixed pointer-events-auto inset-0 z-50 bg-background/80 backdrop-blur-sm data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0'
-      )
+    def side_transform_class
+      case @side
+      when :left
+        'top-0 left-0 border-r data-[state=closed]:-translate-x-full'
+      when :right
+        'top-0 right-0 border-l data-[state=closed]:translate-x-full'
+      when :top
+        'top-0 left-0 w-full h-auto border-b data-[state=closed]:-translate-y-full'
+      when :bottom
+        'bottom-0 left-0 w-full h-auto border-t data-[state=closed]:translate-y-full'
+      end
     end
   end
 end
diff --git a/app/javascript/controllers/ruby_ui/sheet_content_controller.js b/app/javascript/controllers/ruby_ui/sheet_content_controller.js
index 8df0712b..bea3fe15 100644
--- a/app/javascript/controllers/ruby_ui/sheet_content_controller.js
+++ b/app/javascript/controllers/ruby_ui/sheet_content_controller.js
@@ -1,7 +1,43 @@
 import { Controller } from "@hotwired/stimulus"
 
 export default class extends Controller {
+  connect() {
+    this.handleKeydown = this.handleKeydown.bind(this)
+    document.addEventListener('keydown', this.handleKeydown)
+  }
+
+  disconnect() {
+    document.removeEventListener('keydown', this.handleKeydown)
+  }
+
+  handleKeydown(event) {
+    if (event.key === 'Escape') {
+      this.close()
+    }
+  }
+
   close() {
-    this.element.remove()
+    const backdrop = this.element.querySelector('[data-testid="drawer-backdrop"]')
+    const panel = this.element.querySelector('[role="dialog"]')
+
+    if (backdrop) backdrop.setAttribute('data-state', 'closed')
+    if (panel) panel.setAttribute('data-state', 'closed')
+
+    const trigger = document.querySelector('.hamburger.is-active')
+    if (trigger) {
+      trigger.classList.remove('is-active')
+      trigger.setAttribute('aria-expanded', 'false')
+    }
+
+    const sheetController = this.application.getControllerForElementAndIdentifier(
+      document.querySelector('[data-controller="ruby-ui--sheet"]'),
+      'ruby-ui--sheet'
+    )
+    if (sheetController) sheetController.close()
+
+    const duration = 300
+    setTimeout(() => {
+      this.element.remove()
+    }, duration)
   }
 }
diff --git a/app/javascript/controllers/ruby_ui/sheet_controller.js b/app/javascript/controllers/ruby_ui/sheet_controller.js
index d4f83808..de900a3b 100644
--- a/app/javascript/controllers/ruby_ui/sheet_controller.js
+++ b/app/javascript/controllers/ruby_ui/sheet_controller.js
@@ -4,24 +4,51 @@ export default class extends Controller {
   static targets = ["content"]
 
   open() {
-    // Insert the sheet content into the body
-    document.body.insertAdjacentHTML("beforeend", this.contentTarget.innerHTML)
+    if (this.wrapper && this.wrapper.isConnected) return
 
-    // Get the newly inserted sheet content
-    const sheetContent = document.body.lastElementChild
-    const sheetPanel = sheetContent.querySelector('[data-state]')
+    const trigger = this.element.querySelector('.hamburger')
+    if (trigger) {
+      trigger.classList.add('is-active')
+      trigger.setAttribute('aria-expanded', 'true')
+    }
+
+    const wrapper = document.createElement("div")
+    wrapper.setAttribute("data-controller", "ruby-ui--sheet-content")
+    wrapper.setAttribute("data-ruby-ui--sheet-content-sheet-id", this.element.id || "")
+    wrapper.style.cssText = "position:fixed;inset:0;z-index:50;pointer-events:none;"
+    wrapper.innerHTML = this.contentTarget.innerHTML
+    document.body.appendChild(wrapper)
+    this.wrapper = wrapper
+
+    const backdrop = wrapper.querySelector('[data-testid="drawer-backdrop"]')
+    const panel = wrapper.querySelector('[role="dialog"]')
+
+    if (backdrop) {
+      backdrop.setAttribute('data-state', 'closed')
+      backdrop.offsetHeight
+    }
+
+    if (panel) {
+      panel.setAttribute('data-state', 'closed')
+      panel.offsetHeight
+    }
 
-    if (sheetPanel) {
-      // Start with closed state
-      sheetPanel.setAttribute('data-state', 'closed')
+    requestAnimationFrame(() => {
+      if (backdrop) backdrop.setAttribute('data-state', 'open')
+      if (panel) {
+        panel.setAttribute('data-state', 'open')
+        panel.focus()
+      }
+    })
+  }
 
-      // Force a reflow to ensure the closed state is applied
-      sheetPanel.offsetHeight
+  close() {
+    this.wrapper = null
 
-      // Trigger the animation by changing to open state
-      requestAnimationFrame(() => {
-        sheetPanel.setAttribute('data-state', 'open')
-      })
+    const trigger = this.element.querySelector('.hamburger')
+    if (trigger) {
+      trigger.classList.remove('is-active')
+      trigger.setAttribute('aria-expanded', 'false')
     }
   }
 }
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 78acf4c9..b5a98687 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -17,6 +17,7 @@
     <%= favicon_link_tag "/favicon.svg", rel: "apple-touch-icon", type: "image/svg+xml" %>
     <%= stylesheet_link_tag "tailwind", "data-turbo-track": "reload" %>
 	<%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
+    <%= stylesheet_link_tag "hamburgers", "data-turbo-track": "reload" %>
     <%= javascript_importmap_tags %>
 
   <body>
diff --git a/doc/screenshots/post-implementation/01-mobile-nav-closed.png b/doc/screenshots/post-implementation/01-mobile-nav-closed.png
new file mode 100644
index 00000000..a15aae0c
Binary files /dev/null and b/doc/screenshots/post-implementation/01-mobile-nav-closed.png differ
diff --git a/doc/screenshots/post-implementation/02-mobile-drawer-open.png b/doc/screenshots/post-implementation/02-mobile-drawer-open.png
new file mode 100644
index 00000000..b434ed3f
Binary files /dev/null and b/doc/screenshots/post-implementation/02-mobile-drawer-open.png differ
diff --git a/doc/screenshots/post-implementation/03-mobile-drawer-dismissed.png b/doc/screenshots/post-implementation/03-mobile-drawer-dismissed.png
new file mode 100644
index 00000000..10a5ec5a
Binary files /dev/null and b/doc/screenshots/post-implementation/03-mobile-drawer-dismissed.png differ
diff --git a/doc/screenshots/post-implementation/04-mobile-drawer-reopened.png b/doc/screenshots/post-implementation/04-mobile-drawer-reopened.png
new file mode 100644
index 00000000..b434ed3f
Binary files /dev/null and b/doc/screenshots/post-implementation/04-mobile-drawer-reopened.png differ
diff --git a/doc/screenshots/post-implementation/mobile-nav-after-escape.png b/doc/screenshots/post-implementation/mobile-nav-after-escape.png
new file mode 100644
index 00000000..6b9a12e9
Binary files /dev/null and b/doc/screenshots/post-implementation/mobile-nav-after-escape.png differ
diff --git a/doc/screenshots/post-implementation/mobile-nav-closed.png b/doc/screenshots/post-implementation/mobile-nav-closed.png
new file mode 100644
index 00000000..6a77f7d4
Binary files /dev/null and b/doc/screenshots/post-implementation/mobile-nav-closed.png differ
diff --git a/doc/screenshots/post-implementation/mobile-nav-drawer-open.png b/doc/screenshots/post-implementation/mobile-nav-drawer-open.png
new file mode 100644
index 00000000..848414f6
Binary files /dev/null and b/doc/screenshots/post-implementation/mobile-nav-drawer-open.png differ
diff --git a/spec/system/mobile_navigation_spec.rb b/spec/system/mobile_navigation_spec.rb
index 03c01fd9..aa842f98 100644
--- a/spec/system/mobile_navigation_spec.rb
+++ b/spec/system/mobile_navigation_spec.rb
@@ -47,4 +47,99 @@
       expect(page).to have_button('Logout')
     end
   end
+
+  scenario 'Slide-out drawer is positioned on the left side' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+
+    drawer = find('[role="dialog"]')
+    drawer_left = drawer.evaluate_script('this.getBoundingClientRect().left')
+    expect(drawer_left).to eq(0)
+  end
+
+  scenario 'Slide-out drawer has a semi-transparent backdrop' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+
+    expect(page).to have_css('[data-testid="drawer-backdrop"]')
+  end
+
+  scenario 'Tapping backdrop dismisses the drawer' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+    expect(page).to have_css('[role="dialog"]')
+
+    page.execute_script("document.querySelector('[data-testid=\"drawer-backdrop\"]').click()")
+    expect(page).to have_no_css('[role="dialog"]')
+  end
+
+  scenario 'Pressing Escape dismisses the drawer' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+    expect(page).to have_css('[role="dialog"]')
+
+    find('body').send_keys(:escape)
+    expect(page).to have_no_css('[role="dialog"]')
+  end
+
+  scenario 'Drawer width is approximately 75-80% of viewport' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+
+    drawer = find('[role="dialog"]')
+    drawer_width = drawer.evaluate_script('this.getBoundingClientRect().width')
+    viewport_width = 375.0
+
+    ratio = drawer_width / viewport_width
+    expect(ratio).to be_between(0.70, 0.85)
+  end
+
+  scenario 'Drawer has accessible aria attributes' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+
+    drawer = find('[role="dialog"]')
+    expect(drawer[:'aria-modal']).to eq('true')
+    expect(drawer[:'aria-label']).to be_present
+  end
+
+  scenario 'Drawer can be reopened after dismissal' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+    expect(page).to have_css('[role="dialog"]')
+
+    find('body').send_keys(:escape)
+    expect(page).to have_no_css('[role="dialog"]')
+
+    find('button[aria-label="Open menu"]').click
+    expect(page).to have_css('[role="dialog"]')
+  end
+
+  scenario 'Touch targets in drawer meet WCAG minimum size' do
+    page.current_window.resize_to(375, 667)
+    visit root_path
+
+    find('button[aria-label="Open menu"]').click
+
+    within('[role="dialog"]') do
+      all('a, button').each do |target|
+        height = target.evaluate_script('this.getBoundingClientRect().height')
+        expect(height).to be >= 24, "Touch target '#{target.text}' height #{height}px < 24px minimum"
+      end
+    end
+  end
 end