From 431e4cb4ddd4cba7826f36765c8a0f90144adf5b Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Fri, 26 Feb 2016 12:47:46 +0100
Subject: [PATCH] Very basic responsive design / fullscreen touch menus

---
 com.woltlab.wcf/templates/footer.tpl          |   4 +-
 .../templates/headIncludeJavaScript.tpl       |   1 +
 com.woltlab.wcf/templates/pageHeaderLogo.tpl  |   6 +-
 com.woltlab.wcf/templates/pageMenuMobile.tpl  | 135 +++++++++
 wcfsetup/install/files/js/WCF.ImageViewer.js  |   2 +-
 wcfsetup/install/files/js/WCF.Location.js     |   2 +-
 wcfsetup/install/files/js/WCF.User.js         |  20 +-
 wcfsetup/install/files/js/WCF.js              |  50 +--
 .../files/js/WoltLab/WCF/Dom/Traverse.js      |  18 +-
 .../install/files/js/WoltLab/WCF/Dom/Util.js  |  24 +-
 .../files/js/WoltLab/WCF/Environment.js       |   6 +-
 .../install/files/js/WoltLab/WCF/Template.js  |   3 +-
 .../install/files/js/WoltLab/WCF/Ui/Dialog.js |   2 +-
 .../install/files/js/WoltLab/WCF/Ui/Mobile.js |  71 +++--
 .../js/WoltLab/WCF/Ui/Page/Menu/Abstract.js   | 286 ++++++++++++++++++
 .../files/js/WoltLab/WCF/Ui/Page/Menu/Main.js |  31 ++
 .../files/js/WoltLab/WCF/Ui/Page/Menu/User.js |  58 ++++
 .../install/files/js/WoltLab/WCF/Ui/Screen.js | 183 +++++++++++
 wcfsetup/install/files/js/closest.js          |  22 ++
 wcfsetup/install/files/js/require.config.js   |   1 +
 wcfsetup/install/files/js/wcf.globalHelper.js |  10 +-
 .../install/files/style/bootstrap/mixin.scss  |  13 +
 .../install/files/style/layout/global.scss    |  19 +-
 .../install/files/style/layout/layout.scss    |  58 ++--
 .../files/style/layout/pageHeader.scss        |  73 ++++-
 .../files/style/layout/pageHeaderSticky.scss  |  64 ++--
 .../files/style/layout/pageNavigation.scss    |  82 ++---
 wcfsetup/install/files/style/ui/dialog.scss   |   3 -
 wcfsetup/install/files/style/ui/dropdown.scss |   2 +-
 .../files/style/ui/dropdownInteractive.scss   |  83 +++--
 .../install/files/style/ui/menuMobile.scss    | 232 ++++++++++++++
 wcfsetup/install/files/style/ui/redactor.scss |   2 +-
 .../files/style/ui/tabMenuMessage.scss        |   2 +-
 33 files changed, 1304 insertions(+), 264 deletions(-)
 create mode 100644 com.woltlab.wcf/templates/pageMenuMobile.tpl
 create mode 100644 wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Abstract.js
 create mode 100644 wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Main.js
 create mode 100644 wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/User.js
 create mode 100644 wcfsetup/install/files/js/WoltLab/WCF/Ui/Screen.js
 create mode 100644 wcfsetup/install/files/js/closest.js
 create mode 100644 wcfsetup/install/files/style/ui/menuMobile.scss

diff --git a/com.woltlab.wcf/templates/footer.tpl b/com.woltlab.wcf/templates/footer.tpl
index 785fbc7d32..e850feb941 100644
--- a/com.woltlab.wcf/templates/footer.tpl
+++ b/com.woltlab.wcf/templates/footer.tpl
@@ -80,7 +80,9 @@
 	
 	{include file='pageFooter'}
 </div>
-
+				
+{include file='pageMenuMobile'}
+				
 {event name='footer'}
 
 <!-- JAVASCRIPT_RELOCATE_POSITION -->
diff --git a/com.woltlab.wcf/templates/headIncludeJavaScript.tpl b/com.woltlab.wcf/templates/headIncludeJavaScript.tpl
index 1e158c81d1..01ec621c93 100644
--- a/com.woltlab.wcf/templates/headIncludeJavaScript.tpl
+++ b/com.woltlab.wcf/templates/headIncludeJavaScript.tpl
@@ -15,6 +15,7 @@
 {js application='wcf' file='require.config' bundle='WCF.Core' core='true'}
 {js application='wcf' file='require.linearExecution' bundle='WCF.Core' core='true'}
 {js application='wcf' file='wcf.globalHelper' bundle='WCF.Core' core='true'}
+{js application='wcf' file='closest' bundle='WCF.Core' core='true'}
 <script>
 requirejs.config({
 	baseUrl: '{@$__wcf->getPath()}js'
diff --git a/com.woltlab.wcf/templates/pageHeaderLogo.tpl b/com.woltlab.wcf/templates/pageHeaderLogo.tpl
index 0bf451bacc..b247173200 100644
--- a/com.woltlab.wcf/templates/pageHeaderLogo.tpl
+++ b/com.woltlab.wcf/templates/pageHeaderLogo.tpl
@@ -1,10 +1,10 @@
-<div id="logo" class="logo">
+<div id="pageHeaderLogo" class="pageHeaderLogo">
 	{if MODULE_WCF_AD && $__disableAds|empty}{@$__wcf->getAdHandler()->getAds('com.woltlab.wcf.logo')}{/if}
 	
 	<a href="{link}{/link}">
 		{* @TODO *}
-		<img src="{@$__wcf->getPath()}images/default-logo.png" alt="" class="large">
-		<img src="{@$__wcf->getPath()}images/default-logo-small.png" alt="" class="small">
+		<img src="{@$__wcf->getPath()}images/default-logo.png" alt="" class="pageHeaderLogoLarge">
+		<img src="{@$__wcf->getPath()}images/default-logo-small.png" alt="" class="pageHeaderLogoSmall">
 		{*if $__wcf->getStyleHandler()->getStyle()->getPageLogo()}
 			<img src="{$__wcf->getStyleHandler()->getStyle()->getPageLogo()}" alt="">
 		{/if*}
diff --git a/com.woltlab.wcf/templates/pageMenuMobile.tpl b/com.woltlab.wcf/templates/pageMenuMobile.tpl
new file mode 100644
index 0000000000..d798e52e66
--- /dev/null
+++ b/com.woltlab.wcf/templates/pageMenuMobile.tpl
@@ -0,0 +1,135 @@
+{* main menu / page options / breadcrumbs *}
+<div id="pageMainMenuMobile" class="pageMainMenuMobile menuOverlayMobile" data-page-logo="{$__wcf->getPath()}images/default-logo.png">
+	<ol class="menuOverlayItemList" data-title="TODO: menu">
+		<li class="menuOverlayTitle">TODO: menu</li>
+		<li class="menuOverlayItem">
+			<a href="#" class="menuOverlayItemLink box24">
+				<span class="icon icon24 fa-sitemap"></span>
+				<span class="menuOverlayItemTitle">TODO: navigation</span>
+			</a>
+			<ol class="menuOverlayItemList">
+				{foreach from=$__wcf->getBoxHandler()->getBoxes('mainMenu')[0]->getMenu()->getMenuItemNodeList() item=menuItemNode}
+				<li class="menuOverlayItem">
+					{assign var=__outstandingItems value=$menuItemNode->getMenuItem()->getOutstandingItems()}
+					<a href="{$menuItemNode->getMenuItem()->getURL()}" class="menuOverlayItemLink{if $__outstandingItems} menuOverlayItemBadge{/if}">
+						<span class="menuOverlayItemTitle">{lang}{$menuItemNode->getMenuItem()->title}{/lang}</span>
+						{if $__outstandingItems}
+							<span class="badge badgeInverse">{#$__outstandingItems}</span>
+						{/if}
+					</a>
+					
+					{if $menuItemNode->hasChildren()}<ol class="menuOverlayItemList">{else}</li>{/if}
+						
+						{if !$menuItemNode->hasChildren() && $menuItemNode->isLastSibling()}
+							{@"</ol></li>"|str_repeat:$menuItemNode->getOpenParentNodes()}
+						{/if}
+						{/foreach}
+					</ol>
+				</li>
+				{hascontent}
+					<li class="menuOverlayItem">
+						<a href="#" class="menuOverlayItemLink box24">
+							<span class="icon icon24 fa-gears"></span>
+							<span class="menuOverlayItemTitle">TODO: page options</span>
+						</a>
+						<ol class="menuOverlayItemList">
+							{content}
+								{if !$__pageOptions|empty}
+									{@$__pageOptions}
+								{/if}
+								
+								{event name='pageOptions'}
+							{/content}
+						</ol>
+					</li>
+				{/hascontent}
+				{hascontent}
+					<li class="menuOverlayTitle">TODO: current location</li>
+					<li class="menuOverlayItem">
+						<a href="#" class="menuOverlayItemLink box24">
+							<span class="icon icon24 fa-cogs"></span>
+							<span class="menuOverlayItemTitle">TODO: current location</span>
+						</a>
+						<ol class="menuOverlayItemList">
+							{content}
+							{assign var=__breadcrumbsDepth value=0}
+							{foreach from=$__wcf->getBreadcrumbs() item=$breadcrumb}
+								<li class="menuOverlayItem">
+									<a href="{$breadcrumb->getURL()}" class="menuOverlayItemLink">
+										<span class="menuOverlayItemTitle"{if $__breadcrumbsDepth} style="padding-left: {$__breadcrumbsDepth * 10}px" {/if}>
+											<span class="icon icon24 fa-{if $__breadcrumbsDepth}caret-right{else}home{/if}"></span>
+											{$breadcrumb->getLabel()}
+										</span>
+									</a>
+								</li>
+								{assign var=__breadcrumbsDepth value=$__breadcrumbsDepth + 1}
+							{/foreach}
+							{/content}
+						</ol>
+					</li>
+				{/hascontent}
+			</ol>
+		</li>
+	</ol>
+</div>
+
+{* user menu *}
+{* TODO: guests should see the login overlay when clicking the button *}
+<div id="pageUserMenuMobile" class="pageUserMenuMobile menuOverlayMobile" data-page-logo="{$__wcf->getPath()}images/default-logo.png">
+	<ol class="menuOverlayItemList" data-title="TODO: user menu">
+		<li class="menuOverlayTitle">{lang}wcf.user.controlPanel{/lang}</li>
+		<li class="menuOverlayItem">
+			<a href="{link controller='User' object=$__wcf->user}{/link}" class="menuOverlayItemLink box24">
+				{@$__wcf->getUserProfileHandler()->getAvatar()->getImageTag(24)}
+				<span class="menuOverlayItemTitle">{$__wcf->user->username}</span>
+			</a>
+		</li>
+		<li class="menuOverlayItem">
+			<a href="{link controller='Settings'}{/link}" class="menuOverlayItemLink box24">
+				<span class="icon icon24 fa-cog"></span>
+				<span class="menuOverlayItemTitle">Einstellungen</span>
+			</a>
+			<ol class="menuOverlayItemList">
+				{foreach from=$__wcf->getUserMenu()->getMenuItems('') item=menuCategory}
+					<li class="menuOverlayTitle">{lang}{$menuCategory->menuItem}{/lang}</li>
+					{foreach from=$__wcf->getUserMenu()->getMenuItems($menuCategory->menuItem) item=menuItem}
+						<li class="menuOverlayItem">
+							<a href="{$menuItem->getProcessor()->getLink()}" class="menuOverlayItemLink">{@$menuItem}</a>
+						</li>
+					{/foreach}
+				{/foreach}
+			</ol>
+		</li>
+		{if $__wcf->session->getPermission('admin.general.canUseAcp')}
+			<li class="menuOverlayItem">
+				<a href="{link isACP=true}{/link}" class="menuOverlayItemLink box24">
+					<span class="icon icon24 fa-wrench"></span>
+					<span class="menuOverlayItemTitle">{lang}wcf.global.acp.short{/lang}</span>
+				</a>
+			</li>
+		{/if}
+		<li class="menuOverlayItemSpacer"></li>
+		<li class="menuOverlayItem" data-more="com.woltlab.wcf.notifications">
+			<a href="{link controller='NotificationList'}{/link}" class="menuOverlayItemLink box24">
+				<span class="icon icon24 fa-bell-o"></span>
+				<span class="menuOverlayItemTitle">{lang}wcf.user.notification.notifications{/lang}</span>
+			</a>
+		</li>
+		<li class="menuOverlayItem">
+			<a href="#" class="menuOverlayItemLink box24">
+				<span class="icon icon24 fa-exclamation-triangle"></span>
+				<span class="menuOverlayItemTitle">{lang}wcf.moderation.moderation{/lang}</span>
+			</a>
+		</li>
+		
+		{event name='userMenuItems'}
+		
+		<li class="menuOverlayItemSpacer"></li>
+		<li class="menuOverlayItem">
+			<a href="{link controller='Logout'}t={@SECURITY_TOKEN}{/link}" class="menuOverlayItemLink box24">
+				<span class="icon icon24 fa-sign-out"></span>
+				<span class="menuOverlayItemTitle">{lang}wcf.user.logout{/lang}</span>
+			</a>
+		</li>
+	</ol>
+</div>
diff --git a/wcfsetup/install/files/js/WCF.ImageViewer.js b/wcfsetup/install/files/js/WCF.ImageViewer.js
index 60b90ac552..84b40172fa 100644
--- a/wcfsetup/install/files/js/WCF.ImageViewer.js
+++ b/wcfsetup/install/files/js/WCF.ImageViewer.js
@@ -874,7 +874,7 @@ $.widget('ui.wcfImageViewer', {
 		
 		WCF.DOMNodeInsertedHandler.execute();
 		
-		enquire.register('screen and (max-width: 800px)', {
+		enquire.register('(max-width: 767px)', {
 			match: $.proxy(this._enableMobileView, this),
 			unmatch: $.proxy(this._disableMobileView, this)
 		});
diff --git a/wcfsetup/install/files/js/WCF.Location.js b/wcfsetup/install/files/js/WCF.Location.js
index fd5961e7c4..070ca5ee69 100644
--- a/wcfsetup/install/files/js/WCF.Location.js
+++ b/wcfsetup/install/files/js/WCF.Location.js
@@ -123,7 +123,7 @@ WCF.Location.GoogleMaps.Map = Class.extend({
 		// fix maps in mobile sidebars by refreshing the map when displaying
 		// the map
 		if (this._mapContainer.parents('.sidebar').length) {
-			enquire.register('screen and (max-width: 800px)', {
+			enquire.register('(max-width: 767px)', {
 				setup: $.proxy(this._addSidebarMapListener, this),
 				deferSetup: true
 			});
diff --git a/wcfsetup/install/files/js/WCF.User.js b/wcfsetup/install/files/js/WCF.User.js
index 5dbf497195..5658d49c11 100644
--- a/wcfsetup/install/files/js/WCF.User.js
+++ b/wcfsetup/install/files/js/WCF.User.js
@@ -201,11 +201,13 @@ WCF.User.Panel.Abstract = Class.extend({
 	/**
 	 * Toggles the interactive dropdown.
 	 * 
-	 * @param	object		event
-	 * @return	boolean
+	 * @param	{Event=}		event
+	 * @return	{boolean}
 	 */
 	toggle: function(event) {
-		event.preventDefault();
+		if (event instanceof Event) {
+			event.preventDefault();
+		}
 		
 		if (this._dropdown === null) {
 			this._dropdown = this._initDropdown();
@@ -445,6 +447,18 @@ WCF.User.Panel.Notification = WCF.User.Panel.Abstract.extend({
 		}
 		
 		WCF.System.PushNotification.addCallback('userNotificationCount', $.proxy(this.updateUserNotificationCount, this));
+		
+		require(['EventHandler'], (function(EventHandler) {
+			EventHandler.add('com.woltlab.wcf.UserMenuMobile', 'more', (function(data) {
+				console.debug("called");
+				console.debug(data);
+				if (data.identifier === 'com.woltlab.wcf.notifications') {
+					this.toggle();
+					
+					//data.handler.close(true);
+				}
+			}).bind(this));
+		}).bind(this));
 	},
 	
 	/**
diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index 5672aec6a1..5a8d5df987 100755
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -1225,13 +1225,20 @@ WCF.Dropdown.Interactive.Instance = Class.extend({
 	 * Renders the dropdown.
 	 */
 	render: function() {
-		var $pageDirection = WCF.Language.get('wcf.global.pageDirection');
-		
-		if ($('html').css('caption-side') === 'bottom') {
-			this._renderMobile($pageDirection);
+		if (window.matchMedia('(max-width: 767px)').matches) {
+			this._container.css({
+				bottom: '',
+				left: '',
+				right: '',
+				top: elById('pageHeader').clientHeight + 'px'
+			});
 		}
 		else {
-			this._renderDesktop($pageDirection);
+			require(['Ui/Alignment'], (function(UiAlignment) {
+				UiAlignment.set(this._container[0], this._triggerElement[0], {
+					pointer: true
+				});
+			}).bind(this));
 		}
 	},
 	
@@ -1248,39 +1255,6 @@ WCF.Dropdown.Interactive.Instance = Class.extend({
 				suppressScrollX: true
 			});
 		}
-	},
-	
-	/**
-	 * Renders the dropdown on mobile devices.
-	 * 
-	 * @param	string		pageDirection
-	 */
-	_renderMobile: function(pageDirection) {
-		var $elementDimensions = this._triggerElement.getDimensions('outer');
-		var $elementHalfWidth = Math.floor($elementDimensions.width / 2);
-		var $elementOffsets = this._triggerElement.getOffsets('offset');
-		var $pointerHalfWidth = Math.floor(this._pointer.outerWidth() / 2);
-		
-		this._container.css({
-			top: $elementOffsets.top + $elementDimensions.height + 'px'
-		});
-		
-		this._pointer.css({
-			left: ($elementOffsets.left + $elementHalfWidth) - $pointerHalfWidth + 'px'
-		});
-	},
-	
-	/**
-	 * Renders the dropdown on desktops.
-	 * 
-	 * @param	string		pageDirection
-	 */
-	_renderDesktop: function(pageDirection) {
-		require(['Ui/Alignment'], (function(UiAlignment) {
-			UiAlignment.set(this._container[0], this._triggerElement[0], {
-				pointer: true
-			});
-		}).bind(this));
 	}
 });
 
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Traverse.js b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Traverse.js
index 1967cd7de2..428ea3ea3d 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Traverse.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Traverse.js
@@ -2,11 +2,11 @@
  * Provides helper functions to traverse the DOM.
  * 
  * @author	Alexander Ebert
- * @copyright	2001-2015 WoltLab GmbH
+ * @copyright	2001-2016 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  * @module	WoltLab/WCF/Dom/Traverse
  */
-define(['Dom/Util'], function(DomUtil) {
+define([], function() {
 	"use strict";
 	
 	/** @const */ var NONE = 0;
@@ -16,7 +16,7 @@ define(['Dom/Util'], function(DomUtil) {
 	
 	var _probe = [
 		function(el, none) { return true; },
-		function(el, selector) { return DomUtil.matches(el, selector); },
+		function(el, selector) { return el.matches(selector); },
 		function(el, className) { return el.classList.contains(className); },
 		function(el, tagName) { return el.nodeName === tagName; }
 	];
@@ -76,7 +76,7 @@ define(['Dom/Util'], function(DomUtil) {
 	/**
 	 * @exports	WoltLab/WCF/Dom/Traverse
 	 */
-	var DomTraverse = {
+	return {
 		/**
 		 * Examines child elements and returns the first child matching the given selector.
 		 * 
@@ -215,11 +215,11 @@ define(['Dom/Util'], function(DomUtil) {
 		 * Returns the next element sibling with given CSS class.
 		 * 
 		 * @param	{Element}	el		element
-		 * @param	{string}	className	CSS class name
+		 * @param	{string}	tagName         element tag name
 		 * @return	{(Element|null)}	null if there is no next sibling element or it does not have the class set
 		 */
 		nextByTag: function(el, tagName) {
-			return _sibling(el, 'nextElementSibling', CLASS_NAME, className);
+			return _sibling(el, 'nextElementSibling', TAG_NAME, tagName);
 		},
 		
 		/**
@@ -258,13 +258,11 @@ define(['Dom/Util'], function(DomUtil) {
 		 * Returns the previous element sibling with given CSS class.
 		 * 
 		 * @param	{Element}	el		element
-		 * @param	{string}	className	CSS class name
+		 * @param	{string}	tagName         element tag name
 		 * @return	{(Element|null)}	null if there is no previous sibling element or it does not have the class set
 		 */
 		prevByTag: function(el, tagName) {
-			return _sibling(el, 'previousElementSibling', CLASS_NAME, className);
+			return _sibling(el, 'previousElementSibling', TAG_NAME, tagName);
 		}
 	};
-	
-	return DomTraverse;
 });
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
index 5de5990b68..5186e87057 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Dom/Util.js
@@ -9,15 +9,6 @@
 define(['StringUtil'], function(StringUtil) {
 	"use strict";
 	
-	var _matchesSelectorFunction = '';
-	var _possibleFunctions = ['matches', 'webkitMatchesSelector', 'mozMatchesSelector', 'msMatchesSelector'];
-	for (var i = 0; i < 4; i++) {
-		if (Element.prototype.hasOwnProperty(_possibleFunctions[i])) {
-			_matchesSelectorFunction = _possibleFunctions[i];
-			break;
-		}
-	}
-	
 	function _isBoundaryNode(element, ancestor, position) {
 		if (!ancestor.contains(element)) {
 			throw new Error("Ancestor element does not contain target element.");
@@ -93,8 +84,8 @@ define(['StringUtil'], function(StringUtil) {
 		 * @return	{string}	element id
 		 */
 		identify: function(el) {
-			if (!el || !(el instanceof Element)) {
-				return null;
+			if (!(el instanceof Element)) {
+				throw new TypeError("Expected a valid DOM element as argument.");
 			}
 			
 			var id = elAttr(el, 'id');
@@ -106,17 +97,6 @@ define(['StringUtil'], function(StringUtil) {
 			return id;
 		},
 		
-		/**
-		 * Returns true if element matches given CSS selector.
-		 * 
-		 * @param	{Element}	el		element
-		 * @param	{string}	selector	CSS selector
-		 * @return	{boolean}	true if element matches selector
-		 */
-		matches: function(el, selector) {
-			return el[_matchesSelectorFunction](selector);
-		},
-		
 		/**
 		 * Returns the outer height of an element including margins.
 		 * 
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Environment.js b/wcfsetup/install/files/js/WoltLab/WCF/Environment.js
index a0fa0e213d..97f2872847 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Environment.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Environment.js
@@ -2,7 +2,7 @@
  * Provides basic details on the JavaScript environment.
  * 
  * @author	Alexander Ebert
- * @copyright	2001-2015 WoltLab GmbH
+ * @copyright	2001-2016 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  * @module	WoltLab/WCF/Environment
  */
@@ -17,7 +17,7 @@ define([], function() {
 	/**
 	 * @exports	WoltLab/WCF/Enviroment
 	 */
-	var Environment = {
+	return {
 		/**
 		 * Determines environment variables.
 		 */
@@ -121,6 +121,4 @@ define([], function() {
 			return _touch;
 		}
 	};
-	
-	return Environment;
 });
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Template.js b/wcfsetup/install/files/js/WoltLab/WCF/Template.js
index a855d161a6..cbe26c5447 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Template.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Template.js
@@ -27,8 +27,9 @@ define(['./Template.grammar', './StringUtil', 'Language'], function(parser, Stri
 	 * @constructor
 	 */
 	function Template(template) {
-		// Fetch Language, as it cannot be provided because of a circular dependency
+		// Fetch Language/StringUtil, as it cannot be provided because of a circular dependency
 		if (Language === undefined) Language = require('Language');
+		if (StringUtil === undefined) StringUtil = require('StringUtil');
 		
 		try {
 			template = parser.parse(template);
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Dialog.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Dialog.js
index 10d4140fcf..012413d6f2 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Dialog.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Dialog.js
@@ -58,7 +58,7 @@ define(
 				return true;
 			}).bind(this);
 			
-			enquire.register('screen and (max-width: 800px)', {
+			enquire.register('(max-width: 767px)', {
 				match: function() { _dialogFullHeight = true; },
 				unmatch: function() { _dialogFullHeight = false; },
 				setup: function() { _dialogFullHeight = true; },
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Mobile.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Mobile.js
index 9eee9ca29f..ff41be0b28 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Mobile.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Mobile.js
@@ -2,25 +2,27 @@
  * Modifies the interface to provide a better usability for mobile devices.
  * 
  * @author	Alexander Ebert
- * @copyright	2001-2015 WoltLab GmbH
+ * @copyright	2001-2016 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  * @module	WoltLab/WCF/Ui/Mobile
  */
 define(
-	[       'enquire', 'Environment', 'Language', 'Dom/ChangeListener', 'Dom/Traverse', 'Ui/CloseOverlay'],
-	function(enquire,   Environment,   Language,   DomChangeListener,    DomTraverse,    UiCloseOverlay)
+	[       'Environment', 'Language', 'Dom/ChangeListener', 'Ui/CloseOverlay', 'Ui/Screen', './Page/Menu/Main', './Page/Menu/User'],
+	function(Environment,   Language,   DomChangeListener,    UiCloseOverlay,    UiScreen,    UiPageMenuMain,     UiPageMenuUser)
 {
 	"use strict";
 	
 	var _buttonGroupNavigations = null;
 	var _enabled = false;
 	var _main = null;
+	var _pageMenuMain = null;
+	var _pageMenuUser = null;
 	var _sidebar = null;
 	
 	/**
 	 * @exports	WoltLab/WCF/Ui/Mobile
 	 */
-	var UiMobile = {
+	return {
 		/**
 		 * Initializes the mobile UI using enquire.js.
 		 */
@@ -37,16 +39,11 @@ define(
 				document.documentElement.classList.add('mobile');
 			}
 			
-			enquire.register('screen and (max-width: 800px)', {
-				match: this.enable.bind(this),
-				unmatch: this.disable.bind(this),
-				setup: this._init.bind(this),
-				deferSetup: true
+			UiScreen.on({
+				small: this.enable.bind(this),
+				large: this.disable.bind(this),
+				setup: this._init.bind(this)
 			});
-			
-			if (Environment.browser() === 'microsoft' && _sidebar !== null && _sidebar.clientWidth > 305) {
-				this._fixSidebarIE();
-			}
 		},
 		
 		/**
@@ -55,7 +52,8 @@ define(
 		enable: function() {
 			_enabled = true;
 			
-			if (Environment.browser() === 'microsoft') this._fixSidebarIE();
+			_pageMenuMain.enable();
+			_pageMenuUser.enable();
 		},
 		
 		/**
@@ -64,21 +62,15 @@ define(
 		disable: function() {
 			_enabled = false;
 			
-			if (Environment.browser() === 'microsoft') this._fixSidebarIE();
-		},
-		
-		_fixSidebarIE: function() {
-			if (_sidebar === null) return;
-			
-			// sidebar is rarely broken on IE9/IE10
-			_sidebar.style.setProperty('display', 'none');
-			_sidebar.style.removeProperty('display');
+			_pageMenuMain.disable();
+			_pageMenuUser.disable();
 		},
 		
 		_init: function() {
-			this._initSidebarToggleButtons();
-			this._initSearchBar();
+			//this._initSidebarToggleButtons();
+			//this._initSearchBar();
 			this._initButtonGroupNavigation();
+			this._initMobileMenu();
 			
 			UiCloseOverlay.add('WoltLab/WCF/Ui/Mobile', this._closeAllMenus.bind(this));
 			DomChangeListener.add('WoltLab/WCF/Ui/Mobile', this._initButtonGroupNavigation.bind(this));
@@ -154,22 +146,29 @@ define(
 				span.className = 'icon icon24 fa-list';
 				button.appendChild(span);
 				
-				button.addEventListener('click', function(ev) {
-					var next = DomTraverse.next(button);
-					if (next !== null) {
-						next.classList.toggle('open');
+				(function(button) {
+					button.addEventListener('click', function(ev) {
+						var next = button.nextElementSibling;
+						if (next !== null) {
+							next.classList.toggle('open');
+							
+							ev.stopPropagation();
+							return false;
+						}
 						
-						ev.stopPropagation();
-						return false;
-					}
-					
-					return true;
-				});
+						return true;
+					});
+				})(button);
 				
 				navigation.insertBefore(button, navigation.firstChild);
 			}
 		},
 		
+		_initMobileMenu: function() {
+			_pageMenuMain = new UiPageMenuMain();
+			_pageMenuUser = new UiPageMenuUser();
+		},
+		
 		_closeAllMenus: function() {
 			var openMenus = elBySelAll('.jsMobileButtonGroupNavigation > ul.open');
 			for (var i = 0, length = openMenus.length; i < length; i++) {
@@ -177,6 +176,4 @@ define(
 			}
 		}
 	};
-	
-	return UiMobile;
 });
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Abstract.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Abstract.js
new file mode 100644
index 0000000000..284cd5ed79
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Abstract.js
@@ -0,0 +1,286 @@
+/**
+ * Provides a touch-friendly fullscreen menu.
+ * 
+ * @author	Alexander Ebert
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLab/WCF/Ui/Page/Menu/Abstract
+ */
+define(['Environment', 'EventHandler', 'ObjectMap', 'Dom/Traverse', 'Ui/Screen'], function(Environment, EventHandler, ObjectMap, DomTraverse, UiScreen) {
+	"use strict";
+	
+	/**
+	 * @param       {string}        eventIdentifier         event namespace
+	 * @param       {string}        elementId               menu element id
+	 * @param       {string}        buttonSelector          CSS selector for toggle button
+	 * @constructor
+	 */
+	function UiPageMenuAbstract(eventIdentifier, elementId, buttonSelector) { this.init(eventIdentifier, elementId, buttonSelector); }
+	UiPageMenuAbstract.prototype = {
+		/**
+		 * Initializes a touch-friendly fullscreen menu.
+		 * 
+		 * @param       {string}        eventIdentifier         event namespace
+		 * @param       {string}        elementId               menu element id
+		 * @param       {string}        buttonSelector          CSS selector for toggle button
+		 */
+		init: function(eventIdentifier, elementId, buttonSelector) {
+			this._enabled = true;
+			this._eventIdentifier = eventIdentifier;
+			this._items = new ObjectMap();
+			this._menu = elById(elementId);
+			
+			var callbackOpen = this.open.bind(this);
+			var button = elBySel(buttonSelector);
+			button.addEventListener(WCF_CLICK_EVENT, callbackOpen);
+			
+			this._initItems();
+			this._initHeader();
+			
+			EventHandler.add(this._eventIdentifier, 'open', callbackOpen);
+			EventHandler.add(this._eventIdentifier, 'close', this.close.bind(this));
+			
+			var itemList, itemLists = elByClass('menuOverlayItemList', this._menu);
+			this._menu.addEventListener('animationend', (function() {
+				if (!this._menu.classList.contains('open')) {
+					for (var i = 0, length = itemLists.length; i < length; i++) {
+						itemList = itemLists[i];
+						
+						// force the main list to be displayed
+						itemList.classList.remove('active');
+						itemList.classList.remove('hidden');
+					}
+				}
+			}).bind(this));
+		},
+		
+		/**
+		 * Opens the menu.
+		 * 
+		 * @param       {Event}         event   event object
+		 */
+		open: function(event) {
+			if (!this._enabled) {
+				return;
+			}
+			
+			if (event instanceof Event) {
+				event.preventDefault();
+			}
+			
+			this._menu.classList.add('enableAnimation');
+			this._menu.classList.add('open');
+			
+			UiScreen.scrollDisable();
+		},
+		
+		/**
+		 * Closes the menu.
+		 * 
+		 * @param       {(Event|boolean)}       event   event object or boolean true to force close the menu
+		 */
+		close: function(event) {
+			if (event instanceof Event) {
+				event.preventDefault();
+			}
+			else if (event === true) {
+				this._menu.classList.remove('enableAnimation');
+			}
+			
+			if (this._menu.classList.contains('open')) {
+				this._menu.classList.remove('open');
+				
+				UiScreen.scrollEnable();
+			}
+			
+		},
+		
+		/**
+		 * Enables the touch menu.
+		 */
+		enable: function() {
+			this._enabled = true;
+		},
+		
+		/**
+		 * Disables the touch menu.
+		 */
+		disable: function() {
+			this._enabled = false;
+			
+			this.close(true);
+		},
+		
+		/**
+		 * Initializes all menu items.
+		 * 
+		 * @protected
+		 */
+		_initItems: function() {
+			elBySelAll('.menuOverlayItemLink', this._menu, this._initItem.bind(this));
+		},
+		
+		/**
+		 * Initializes a single menu item.
+		 * 
+		 * @param       {Element}       item    menu item
+		 * @protected
+		 */
+		_initItem: function(item) {
+			var itemList = item.nextElementSibling;
+			if (itemList === null) {
+				return;
+			}
+			
+			var isLink = (elAttr(item, 'href') !== '#');
+			var parent = item.parentNode;
+			var parentItemList = parent.parentNode;
+			var itemTitle = DomTraverse.childByClass(item, 'menuOverlayItemTitle').textContent;
+			
+			this._items.set(item, {
+				itemList: itemList,
+				parentItemList: parentItemList
+			});
+			
+			elData(itemList, 'title', itemTitle);
+			
+			var callbackLink = this._showItemList.bind(this, item), wrapper;
+			if (isLink) {
+				wrapper = elCreate('span');
+				wrapper.className = 'menuOverlayItemWrapper';
+				parent.insertBefore(wrapper, item);
+				wrapper.appendChild(item);
+				
+				var moreLink = elCreate('a');
+				elAttr(moreLink, 'href', '#');
+				moreLink.className = 'menuOverlayItemLinkIcon';
+				moreLink.innerHTML = '<span class="icon icon24 fa-angle-right"></span>';
+				moreLink.addEventListener(WCF_CLICK_EVENT, callbackLink);
+				wrapper.appendChild(moreLink);
+			}
+			else {
+				item.classList.add('menuOverlayItemLinkMore');
+				item.addEventListener(WCF_CLICK_EVENT, callbackLink);
+			}
+			
+			var backLinkItem = elCreate('li');
+			backLinkItem.className = 'menuOverlayHeader';
+			
+			wrapper = elCreate('span');
+			wrapper.className = 'menuOverlayItemWrapper';
+			
+			var backLink = elCreate('a');
+			elAttr(backLink, 'href', '#');
+			backLink.className = 'menuOverlayItemLink menuOverlayBackLink';
+			backLink.textContent = elData(parentItemList, 'title');
+			backLink.addEventListener(WCF_CLICK_EVENT, this._hideItemList.bind(this, item));
+			
+			var closeLink = elCreate('a');
+			elAttr(closeLink, 'href', '#');
+			closeLink.className = 'menuOverlayItemLinkIcon';
+			closeLink.innerHTML = '<span class="icon icon24 fa-times"></span>';
+			closeLink.addEventListener(WCF_CLICK_EVENT, this.close.bind(this));
+			
+			wrapper.appendChild(backLink);
+			wrapper.appendChild(closeLink);
+			backLinkItem.appendChild(wrapper);
+			
+			itemList.insertBefore(backLinkItem, itemList.firstElementChild);
+			
+			if (!backLinkItem.nextElementSibling.classList.contains('menuOverlayTitle')) {
+				var titleItem = elCreate('li');
+				titleItem.className = 'menuOverlayTitle';
+				var title = elCreate('span');
+				title.textContent = itemTitle;
+				titleItem.appendChild(title);
+				
+				itemList.insertBefore(titleItem, backLinkItem.nextElementSibling);
+			}
+		},
+		
+		/**
+		 * Renders the menu item list header.
+		 * 
+		 * @protected
+		 */
+		_initHeader: function() {
+			var listItem = elCreate('li');
+			listItem.className = 'menuOverlayHeader';
+			
+			var wrapper = elCreate('span');
+			wrapper.className = 'menuOverlayItemWrapper';
+			listItem.appendChild(wrapper);
+			
+			var logoWrapper = elCreate('span');
+			logoWrapper.className = 'menuOverlayLogoWrapper';
+			wrapper.appendChild(logoWrapper);
+			
+			var logo = elCreate('span');
+			logo.className = 'menuOverlayLogo';
+			logo.style.setProperty('background-image', 'url("' + elData(this._menu, 'page-logo') + '")', '');
+			logoWrapper.appendChild(logo);
+			
+			var closeLink = elCreate('a');
+			elAttr(closeLink, 'href', '#');
+			closeLink.className = 'menuOverlayItemLinkIcon';
+			closeLink.innerHTML = '<span class="icon icon24 fa-times"></span>';
+			closeLink.addEventListener(WCF_CLICK_EVENT, this.close.bind(this));
+			wrapper.appendChild(closeLink);
+			
+			var list = DomTraverse.childByClass(this._menu, 'menuOverlayItemList');
+			list.insertBefore(listItem, list.firstElementChild);
+		},
+		
+		/**
+		 * Hides an item list, return to the parent item list.
+		 * 
+		 * @param       {Element}       item    menu item
+		 * @param       {Event}         event   event object
+		 * @protected
+		 */
+		_hideItemList: function(item, event) {
+			if (event instanceof Event) {
+				event.preventDefault();
+			}
+			
+			var data = this._items.get(item);
+			data.itemList.classList.remove('active');
+			data.parentItemList.classList.remove('hidden');
+		},
+		
+		/**
+		 * Shows the child item list.
+		 * 
+		 * @param       {Element}       item    menu item
+		 * @param event
+		 * @private
+		 */
+		_showItemList: function(item, event) {
+			if (event instanceof Event) {
+				event.preventDefault();
+			}
+			
+			var data = this._items.get(item);
+			
+			var load = elData(data.itemList, 'load');
+			if (load) {
+				if (!elDataBool(item, 'loaded')) {
+					var icon = event.currentTarget.firstElementChild;
+					if (icon.classList.contains('fa-angle-right')) {
+						icon.classList.remove('fa-angle-right');
+						icon.classList.add('fa-spinner');
+					}
+					
+					EventHandler.fire(this._eventIdentifier, 'load_' + load);
+					
+					return;
+				}
+			}
+			
+			data.itemList.classList.add('active');
+			data.parentItemList.classList.add('hidden');
+		}
+	};
+	
+	return UiPageMenuAbstract;
+});
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Main.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Main.js
new file mode 100644
index 0000000000..9cedcb3ecd
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/Main.js
@@ -0,0 +1,31 @@
+/**
+ * Provides the touch-friendly fullscreen main menu.
+ * 
+ * @author	Alexander Ebert
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLab/WCF/Ui/Page/Menu/Main
+ */
+define(['Core', './Abstract'], function(Core, UiPageMenuAbstract) {
+	"use strict";
+	
+	/**
+	 * @constructor
+	 */
+	function UiPageMenuMain() { this.init(); }
+	Core.inherit(UiPageMenuMain, UiPageMenuAbstract, {
+		/**
+		 * Initializes the touch-friendly fullscreen main menu.
+		 */
+		init: function() {
+			UiPageMenuMain._super.prototype.init.call(
+				this,
+				'com.woltlab.wcf.MainMenuMobile',
+				'pageMainMenuMobile',
+				'#pageHeader .mainMenu'
+			);
+		}
+	});
+	
+	return UiPageMenuMain;
+});
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/User.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/User.js
new file mode 100644
index 0000000000..dfe75fb166
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Page/Menu/User.js
@@ -0,0 +1,58 @@
+/**
+ * Provides the touch-friendly fullscreen user menu.
+ * 
+ * @author	Alexander Ebert
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLab/WCF/Ui/Page/Menu/User
+ */
+define(['Core', 'EventHandler', './Abstract'], function(Core, EventHandler, UiPageMenuAbstract) {
+	"use strict";
+	
+	/**
+	 * @constructor
+	 */
+	function UiPageMenuUser() { this.init(); }
+	Core.inherit(UiPageMenuUser, UiPageMenuAbstract, {
+		/**
+		 * Initializes the touch-friendly fullscreen user menu.
+		 */
+		init: function() {
+			UiPageMenuUser._super.prototype.init.call(
+				this,
+				'com.woltlab.wcf.UserMenuMobile',
+				'pageUserMenuMobile',
+				'#pageHeader .userPanel'
+			);
+		},
+		
+		/**
+		 * Overrides the `_initItem()` method to check for special items that do not
+		 * act as a link but instead trigger an event for external processing.
+		 * 
+		 * @param       {Element}       item    menu item
+		 * @protected
+		 */
+		_initItem: function(item) {
+			// check if it should contain a 'more' link w/ an external callback
+			var more = elData(item.parentNode, 'more');
+			if (more) {
+				item.addEventListener(WCF_CLICK_EVENT, (function(event) {
+					event.preventDefault();
+					event.stopPropagation();
+					
+					EventHandler.fire(this._eventIdentifier, 'more', {
+						handler: this,
+						identifier: more
+					});
+				}).bind(this));
+				
+				return;
+			}
+			
+			UiPageMenuUser._super.prototype._initItem.call(this, item);
+		}
+	});
+	
+	return UiPageMenuUser;
+});
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Ui/Screen.js b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Screen.js
new file mode 100644
index 0000000000..bb166080b0
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Ui/Screen.js
@@ -0,0 +1,183 @@
+/**
+ * Provides consistent support for media queries and body scrolling.
+ * 
+ * @author	Alexander Ebert
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLab/WCF/Ui/Screen
+ */
+define(['Core', 'Dictionary'], function(Core, Dictionary) {
+	"use strict";
+	
+	var _bodyOverflow = '';
+	var _mql = new Dictionary();
+	var _scrollDisableCounter = 0;
+	
+	/**
+	 * @exports     WoltLab/WCF/Ui/Screen
+	 */
+	return {
+		/**
+		 * Registers event listeners for media query match/unmatch.
+		 * 
+		 * The `callbacks` object may contain the following keys:
+		 *  - `small` or `match`, triggered when media query matches
+		 *  - `large` or `unmatch`, triggered when media query no longer matches
+		 *  - `setup`, invoked when media query first matches
+		 * 
+		 * The `small` and `large` keys only exist to increase readability when omitting
+		 * the `query` argument and thus default to match the default value of `query`.
+		 * 
+		 * `query` will default to `(max-width: 767px)`, it allows any value that can
+		 * be evaluated with `window.matchMedia`.
+		 * 
+		 * Returns a UUID that is used to internal identify the callbacks, can be used
+		 * to remove binding by calling the `remove` method.
+		 * 
+		 * @param       {object}        callbacks
+		 * @param       {string=}       query
+		 * @return      {string}        UUID for listener removal
+		 */
+		on: function(callbacks, query) {
+			var uuid = Core.getUuid(), queryObject = this._getQueryObject(query);
+			
+			if (typeof callbacks.small === 'function' || typeof callbacks.match === 'function') {
+				queryObject.callbacksMatch.set(uuid, callbacks.small || callbacks.match);
+			}
+			
+			if (typeof callbacks.large === 'function' || typeof callbacks.unmatch === 'function') {
+				queryObject.callbacksUnmatch.set(uuid, callbacks.large || callbacks.unmatch);
+			}
+			
+			if (typeof callbacks.setup === 'function') {
+				if (queryObject.mql.matches) {
+					callbacks.setup();
+				}
+				else {
+					queryObject.callbacksSetup.set(uuid, callbacks.setup);
+				}
+			}
+			
+			return uuid;
+		},
+		
+		/**
+		 * Removes all listeners identified by their common UUID.
+		 * 
+		 * @param       {string}        uuid    UUID received when calling `on()`
+		 * @param       {string=}       query   must match the `query` argument used when calling `on()`
+		 */
+		remove: function(uuid, query) {
+			var queryObject = this._getQueryObject(query);
+			
+			queryObject.callbacksMatch.delete(uuid);
+			queryObject.callbacksUnmatch.delete(uuid);
+			queryObject.callbacksSetup.delete(uuid);
+		},
+		
+		/**
+		 * Returns a boolean value if a media query expression currently matches.
+		 * 
+		 * @param       {string=}       query   CSS media query
+		 * @returns     {boolean}       true if query matches
+		 */
+		is: function(query) {
+			var queryObject = this._getQueryObject(query);
+			
+			if (query === 'large') {
+				// the query matches for max-width, we need to inverse the logic here
+				return !queryObject.mql.matches;
+			}
+			
+			return queryObject.mql.matches;
+		},
+		
+		/**
+		 * Disables scrolling of body element.
+		 */
+		scrollDisable: function() {
+			if (_scrollDisableCounter === 0) {
+				_bodyOverflow = document.body.style.getPropertyValue('overflow');
+				
+				document.body.style.setProperty('overflow', 'hidden', '');
+			}
+			
+			_scrollDisableCounter++;
+		},
+		
+		/**
+		 * Re-enables scrolling of body element.
+		 */
+		scrollEnable: function() {
+			if (_scrollDisableCounter) {
+				_scrollDisableCounter--;
+				
+				if (_scrollDisableCounter === 0) {
+					if (_bodyOverflow) {
+						document.body.style.setProperty('overflow', _bodyOverflow, '');
+					}
+					else {
+						document.body.style.removeProperty('overflow');
+					}
+				}
+			}
+		},
+		
+		/**
+		 * 
+		 * @param       {string=}       query   CSS media query
+		 * @return      {Object}        object containing callbacks and MediaQueryList
+		 * @protected
+		 */
+		_getQueryObject: function(query) {
+			if (typeof query !== 'string') query = '';
+			if (query === '' || query === 'small' || query === 'large') {
+				query = '(max-width: 767px)';
+			}
+			
+			var queryObject = _mql.get(query);
+			if (!queryObject) {
+				queryObject = {
+					callbacksMatch: new Dictionary(),
+					callbacksUnmatch: new Dictionary(),
+					callbacksSetup: new Dictionary(),
+					mql: window.matchMedia(query)
+				};
+				queryObject.mql.addListener(this._mqlChange.bind(this));
+				
+				_mql.set(query, queryObject);
+			}
+			
+			return queryObject;
+		},
+		
+		/**
+		 * Triggered whenever a registered media query now matches or no longer matches.
+		 * 
+		 * @param       {Event} event   event object
+		 * @protected
+		 */
+		_mqlChange: function(event) {
+			var queryObject = this._getQueryObject(event.media);
+			if (event.matches) {
+				if (queryObject.callbacksSetup.size) {
+					queryObject.callbacksSetup.forEach(function(callback) {
+						callback();
+					});
+					
+					// discard all setup callbacks after execution
+					queryObject.callbacksSetup = new Dictionary();
+				}
+				
+				queryObject.callbacksMatch.forEach(function(callback) {
+					callback();
+				});
+			}
+			else {
+				queryObject.callbacksUnmatch.forEach(function(callback) {
+					callback();
+				});
+			}
+		}
+	};
+});
diff --git a/wcfsetup/install/files/js/closest.js b/wcfsetup/install/files/js/closest.js
new file mode 100644
index 0000000000..3454c8674c
--- /dev/null
+++ b/wcfsetup/install/files/js/closest.js
@@ -0,0 +1,22 @@
+/*
+ * Polyfill for `Element.prototype.matches()` and `Element.prototype.closest()`
+ * Copyright (c) 2015 Jonathan Neal - https://github.com/jonathantneal/closest
+ * License: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/)
+ */
+(function(ELEMENT) {
+	ELEMENT.matches = ELEMENT.matches || ELEMENT.mozMatchesSelector || ELEMENT.msMatchesSelector || ELEMENT.oMatchesSelector || ELEMENT.webkitMatchesSelector;
+	
+	ELEMENT.closest = ELEMENT.closest || function closest(selector) {
+			var element = this;
+			
+			while (element) {
+				if (element.matches(selector)) {
+					break;
+				}
+				
+				element = element.parentElement;
+			}
+			
+			return element;
+		};
+}(Element.prototype));
diff --git a/wcfsetup/install/files/js/require.config.js b/wcfsetup/install/files/js/require.config.js
index d57e30a0e2..0d2d54dd59 100644
--- a/wcfsetup/install/files/js/require.config.js
+++ b/wcfsetup/install/files/js/require.config.js
@@ -34,6 +34,7 @@ requirejs.config({
 			'Ui/Dialog': 'WoltLab/WCF/Ui/Dialog',
 			'Ui/Notification': 'WoltLab/WCF/Ui/Notification',
 			'Ui/ReusableDropdown': 'WoltLab/WCF/Ui/Dropdown/Reusable',
+			'Ui/Screen': 'WoltLab/WCF/Ui/Screen',
 			'Ui/SimpleDropdown': 'WoltLab/WCF/Ui/Dropdown/Simple',
 			'Ui/TabMenu': 'WoltLab/WCF/Ui/TabMenu',
 			'Upload': 'WoltLab/WCF/Upload'
diff --git a/wcfsetup/install/files/js/wcf.globalHelper.js b/wcfsetup/install/files/js/wcf.globalHelper.js
index b0ac6a8b7a..48dd1d4b12 100644
--- a/wcfsetup/install/files/js/wcf.globalHelper.js
+++ b/wcfsetup/install/files/js/wcf.globalHelper.js
@@ -72,10 +72,16 @@
 	 * 
 	 * @param	{string}	selector	CSS selector
 	 * @param	{Element=}	context		target element, assuming `document` if omitted
+	 * @param       {function=}     callback        callback function pased to forEach()
 	 * @return	{NodeList}	matching elements
 	 */
-	window.elBySelAll = function(selector, context) {
-		return (context || document).querySelectorAll(selector);
+	window.elBySelAll = function(selector, context, callback) {
+		var nodeList = (context || document).querySelectorAll(selector);
+		if (typeof callback === 'function') {
+			Array.prototype.forEach.call(nodeList, callback);
+		}
+		
+		return nodeList;
 	};
 	
 	/**
diff --git a/wcfsetup/install/files/style/bootstrap/mixin.scss b/wcfsetup/install/files/style/bootstrap/mixin.scss
index 89419bdd53..862713a839 100644
--- a/wcfsetup/install/files/style/bootstrap/mixin.scss
+++ b/wcfsetup/install/files/style/bootstrap/mixin.scss
@@ -59,3 +59,16 @@
 	box-shadow: $parameters;
 }
 /** /deprecated */
+
+@mixin small-screen-only() {
+	/* 768px - 1px */
+	@media (max-width: 767px) {
+		@content;
+	}
+}
+
+@mixin large-screen-only() {
+	@media (min-width: 768px) {
+		@content;
+	}
+}
diff --git a/wcfsetup/install/files/style/layout/global.scss b/wcfsetup/install/files/style/layout/global.scss
index f7876b3d09..fb82b29e51 100644
--- a/wcfsetup/install/files/style/layout/global.scss
+++ b/wcfsetup/install/files/style/layout/global.scss
@@ -1,13 +1,20 @@
 .layoutBoundary {
 	margin: 0 auto;
-	padding: 0 20px;
 	
-	@if $useFluidLayout {
-		min-width: $wcfLayoutMinWidth;
-		max-width: $wcfLayoutMaxWidth;
+	@include small-screen-only {
+		padding: 0 10px;
+		width: 100%;
 	}
-	@else {
-		width: $wcfLayoutFixedWidth;
+	
+	@include large-screen-only {
+		padding: 0 20px;
+		
+		@if $useFluidLayout {
+			min-width: $wcfLayoutMinWidth;
+			max-width: $wcfLayoutMaxWidth;
+		} @else {
+			width: $wcfLayoutFixedWidth;
+		}
 	}
 }
 
diff --git a/wcfsetup/install/files/style/layout/layout.scss b/wcfsetup/install/files/style/layout/layout.scss
index dc13ba8e8b..981925b502 100644
--- a/wcfsetup/install/files/style/layout/layout.scss
+++ b/wcfsetup/install/files/style/layout/layout.scss
@@ -43,10 +43,6 @@ a {
 	padding: 40px 0;
 	z-index: 50;
 	
-	> div {
-		display: flex;
-	}
-	
 	a {
 		color: $wcfContentLink;
 		
@@ -56,35 +52,43 @@ a {
 	}
 }
 
-.content {
-	flex: 1 1 auto;
-	
-	// sidebar follows
-	&:not(:last-child) {
-		flex-basis: calc(100% - 340px);
-		max-width: calc(100% - 340px); // IE fix
-	}
-}
-
-.sidebar {
-	flex: 0 0 310px;
-	
-	&:first-child {
-		margin-right: 30px;
+/* use flex-box to enforce a proper side-by-side layout on desktop */
+@include large-screen-only {
+	.main > div {
+		display: flex;
 	}
 	
-	& + .content {
-		flex-basis: calc(100% - 340px);
-		max-width: calc(100% - 340px); // IE fix
+	.content {
+		flex: 1 1 auto;
 		
 		// sidebar follows
 		&:not(:last-child) {
-			flex-basis: calc(100% - 680px);
-			max-width: calc(100% - 680px); // IE fix
+			flex-basis: calc(100% - 340px);
+			max-width: calc(100% - 340px); // IE fix
+		}
+		
+		& + .sidebar {
+			margin-left: 30px;
+		}
+	}
+	
+	.sidebar {
+		flex: 0 0 310px;
+		
+		&:first-child {
+			margin-right: 30px;
+		}
+		
+		& + .content {
+			flex-basis: calc(100% - 340px);
+			max-width: calc(100% - 340px); // IE fix
+			
+			// sidebar follows
+			&:not(:last-child) {
+				flex-basis: calc(100% - 680px);
+				max-width: calc(100% - 680px); // IE fix
+			}
 		}
 	}
 }
 
-.content + .sidebar {
-	margin-left: 30px;
-}
diff --git a/wcfsetup/install/files/style/layout/pageHeader.scss b/wcfsetup/install/files/style/layout/pageHeader.scss
index fc281b1660..5022206521 100644
--- a/wcfsetup/install/files/style/layout/pageHeader.scss
+++ b/wcfsetup/install/files/style/layout/pageHeader.scss
@@ -24,14 +24,14 @@
 }
 
 /* LOGO */
-#logo {
+.pageHeaderLogo {
 	// use a fixed width of 50% together with the search bar to force a wrap
 	flex: 0 0 50%;
 	
 	// gap between the two rows formed by the wrapping flex box
 	margin-bottom: 15px;
 	
-	> a > img.small {
+	.pageHeaderLogoSmall {
 		display: none;
 	}
 }
@@ -331,3 +331,72 @@
 		}
 	}
 }
+
+@include small-screen-only {
+	.pageHeader > div > div {
+		padding-bottom: 10px;
+		padding-top: 10px;
+	}
+	
+	.pageHeaderLogo {
+		flex: 1 1 auto;
+		margin: 0 10px;
+		order: 2;
+		text-align: center;
+		
+		.pageHeaderLogoLarge {
+			display: none;
+		}
+		
+		.pageHeaderLogoSmall {
+			display: inline;
+		}
+	}
+	
+	.userPanel {
+		flex: 0 0 auto;
+		order: 3;
+		
+		&::before {
+			content: $fa-var-user;
+		}
+		
+		> .userPanelItems {
+			display: none;
+		}
+	}
+	
+	.mainMenu {
+		flex: 0 0 auto;
+		order: 1;
+		
+		&::before {
+			content: $fa-var-bars;
+		}
+		
+		> .boxContent {
+			display: none;
+		}
+	}
+	
+	.mainMenu,
+	.userPanel {
+		&::before {
+			background-color: $wcfHeaderMenuBackground;
+			color: $wcfHeaderMenuLink;
+			font-family: FontAwesome;
+			font-size: 28px;
+			line-height: 32px;
+			padding: 5px 10px;
+		}
+		
+		&:hover::before {
+			background-color: $wcfHeaderMenuBackgroundActive;
+			color: $wcfHeaderMenuLinkActive;
+		}
+	}
+	
+	.pageHeaderSearch {
+		display: none;
+	}
+}
diff --git a/wcfsetup/install/files/style/layout/pageHeaderSticky.scss b/wcfsetup/install/files/style/layout/pageHeaderSticky.scss
index 06aeb8ae7c..97e62ba7ab 100644
--- a/wcfsetup/install/files/style/layout/pageHeaderSticky.scss
+++ b/wcfsetup/install/files/style/layout/pageHeaderSticky.scss
@@ -25,37 +25,6 @@
 		}
 	}
 	
-	#logo {
-		flex: 0 auto;
-		margin-bottom: 0;
-		order: 1;
-		
-		> a > .large {
-			display: none;
-		}
-		
-		> a > .small {
-			display: block;
-		}
-	}
-	
-	.mainMenu {
-		flex: 1 auto;
-		order: 2;
-		margin: 0 20px;
-	}
-	
-	.userPanel {
-		flex: 0 auto;
-		order: 3;
-		margin-right: 20px;
-	}
-	
-	.pageHeaderSearch {
-		flex: 0 auto;
-		order: 4;
-	}
-	
 	.pageHeaderSearchInputContainer:not(.open) {
 		> .pageHeaderSearchInput {
 			padding-right: 20px;
@@ -66,4 +35,37 @@
 			pointer-events: none;
 		}
 	}
+	
+	@include large-screen-only {
+		#logo {
+			flex: 0 auto;
+			margin-bottom: 0;
+			order: 1;
+			
+			> a > .large {
+				display: none;
+			}
+			
+			> a > .small {
+				display: block;
+			}
+		}
+		
+		.mainMenu {
+			flex: 1 auto;
+			order: 2;
+			margin: 0 20px;
+		}
+		
+		.userPanel {
+			flex: 0 auto;
+			order: 3;
+			margin-right: 20px;
+		}
+		
+		.pageHeaderSearch {
+			flex: 0 auto;
+			order: 4;
+		}
+	}
 }
diff --git a/wcfsetup/install/files/style/layout/pageNavigation.scss b/wcfsetup/install/files/style/layout/pageNavigation.scss
index 48388cd651..0c8fafa021 100644
--- a/wcfsetup/install/files/style/layout/pageNavigation.scss
+++ b/wcfsetup/install/files/style/layout/pageNavigation.scss
@@ -1,50 +1,58 @@
-.pageNavigation {
-	background-color: $wcfNavigationBackground;
-	color: $wcfNavigationText;
-	flex: 0 0 auto;
-	padding: 5px 0;
-	z-index: 25;
-	
-	> div {
-		align-items: center;
-		display: flex;
-		justify-content: flex-end;
-		height: 30px;
-	}
-	
-	.icon {
+@include large-screen-only {
+	.pageNavigation {
+		background-color: $wcfNavigationBackground;
 		color: $wcfNavigationText;
-	}
-	
-	a {
-		color: $wcfNavigationLink;
+		flex: 0 0 auto;
+		padding: 5px 0;
+		z-index: 25;
+		
+		> div {
+			align-items: center;
+			display: flex;
+			justify-content: flex-end;
+			height: 30px;
+		}
+		
+		.icon {
+			color: $wcfNavigationText;
+		}
 		
-		&:hover {
-			color: $wcfNavigationLinkActive;
+		a {
+			color: $wcfNavigationLink;
+			
+			&:hover {
+				color: $wcfNavigationLinkActive;
+			}
 		}
 	}
-}
-
-.pageNavigationIcons {
-	display: flex;
-	flex: 0 0 auto;
-	flex-direction: row-reverse;
 	
-	> li {
+	.pageNavigationIcons {
+		display: flex;
 		flex: 0 0 auto;
+		flex-direction: row-reverse;
 		
-		&:not(:last-child) {
-			margin-left: 10px;
-		}
-		
-		> a {
-			> .icon {
-				color: $wcfHeaderLink;
+		> li {
+			flex: 0 0 auto;
+			
+			&:not(:last-child) {
+				margin-left: 10px;
 			}
 			
-			&:hover > .icon {
-				color: $wcfHeaderLinkActive;
+			> a {
+				> .icon {
+					color: $wcfHeaderLink;
+				}
+				
+				&:hover > .icon {
+					color: $wcfHeaderLinkActive;
+				}
 			}
 		}
 	}
 }
+
+@include small-screen-only {
+	.pageNavigation {
+		display: none;
+	}
+}
diff --git a/wcfsetup/install/files/style/ui/dialog.scss b/wcfsetup/install/files/style/ui/dialog.scss
index b0c125bb1c..7fd26cc8d8 100644
--- a/wcfsetup/install/files/style/ui/dialog.scss
+++ b/wcfsetup/install/files/style/ui/dialog.scss
@@ -163,9 +163,6 @@
 	}
 }
 
-@media only screen and (max-width: 800px) {
-}
-
 /* static dialogs */
 .jsStaticDialogContent {
 	display: none;
diff --git a/wcfsetup/install/files/style/ui/dropdown.scss b/wcfsetup/install/files/style/ui/dropdown.scss
index bdedf7f9f9..452e26318d 100644
--- a/wcfsetup/install/files/style/ui/dropdown.scss
+++ b/wcfsetup/install/files/style/ui/dropdown.scss
@@ -300,7 +300,7 @@
 	min-height: 20px;
 }
 
-@media only screen and (max-width: 800px) {
+@include small-screen-only {
 	.dropdownMenu {
 		left: 0 !important;
 		right: 0 !important;
diff --git a/wcfsetup/install/files/style/ui/dropdownInteractive.scss b/wcfsetup/install/files/style/ui/dropdownInteractive.scss
index 7fd65205a1..4b8b60ccb2 100644
--- a/wcfsetup/install/files/style/ui/dropdownInteractive.scss
+++ b/wcfsetup/install/files/style/ui/dropdownInteractive.scss
@@ -58,6 +58,12 @@
 		overflow: visible;
 		max-height: none;
 	}
+	
+	@include small-screen-only {
+		> .elementPointer {
+			display: none;
+		}
+	}
 }
 
 /* drop down header */
@@ -88,13 +94,16 @@
 		flex: 0 0 auto;
 		margin-left: 5px;
 	}
+	
+	@include small-screen-only {
+		padding: 10px;
+	}
 }
 
 /* container for dropdown items */
 .interactiveDropdownItemsContainer {
 	border: 1px solid $wcfContentBorderInner;
 	border-width: 1px 0;
-	max-height: 300px;
 	
 	&.ps-container {
 		> .interactiveDropdownItems {
@@ -134,6 +143,10 @@
 			align-items: center;
 			overflow: hidden;
 		}
+		
+		@include small-screen-only {
+			padding: 10px;
+		}
 	}
 	
 	.loading,
@@ -207,12 +220,13 @@
 	}
 }
 
-@media only screen and (min-width: 801px) {
+@include large-screen-only {
 	.interactiveDropdown {
 		min-width: 350px;
 	}
 	
 	.interactiveDropdownItemsContainer {
+		max-height: 400px;
 		overflow: hidden;
 		position: relative;
 	}
@@ -222,41 +236,48 @@
 	}
 }
 
-/* todo: mobile version
-@media only screen and (max-width: 800px) {
-	.DEBUG_ONLY_interactiveDropdown {
-		border-width: 1px 0;
-		box-sizing: border-box;
-		left: 0 !important;
-		right: 0 !important;
-		width: 100%;
+@include small-screen-only {
+	.interactiveDropdown {
+		bottom: 0;
+		display: flex;
+		flex-direction: column;
+		left: 0;
+		position: fixed;
+		right: 0;
+	}
+	
+	.interactiveDropdownHeader {
+		flex: 0 0 auto;
+	}
+	
+	.interactiveDropdownItemsContainer {
+		flex: 1 1 auto;
+		overflow: auto;
 		
-		> .interactiveDropdownItemsContainer {
-			overflow-x: auto;
+		/* increase the clickable area of the mark as read icon */
+		.interactiveDropdownItemMarkAsRead {
+			bottom: 0;
+			position: absolute;
+			right: 0;
+			top: 0;
+			width: 36px; /* 16px icon + 2x 10px padding */
 			
-			> .interactiveDropdownItems > li.interactiveDropdownItemOutstandingIcon > div.interactiveDropdownItemMarkAsRead {
-				bottom: 0;
-				position: absolute;
-				right: 0;
-				top: 0;
-				//width: (@wcfGapSmall + @wcfGapTiny) + 16px + (@wcfGapSmall + @wcfGapTiny);
+			> a {
+				display: block;
+				height: 100%;
+				text-align: center;
 				
-				> a {
-					display: block;
-					height: 100%;
-					text-align: center;
+				> .icon {
+					position: relative;
+					top: 50%;
 					
-					> .icon {
-						position: relative;
-						top: 50%;
-						
-						transform: translateY(-50%);
-						-ms-transform: translateY(-50%);
-						-webkit-transform: translateY(-50%);
-					}
+					transform: translateY(-50%);
 				}
 			}
 		}
 	}
+	
+	.interactiveDropdownShowAll {
+		flex: 0 0 auto;
+	}
 }
-*/
\ No newline at end of file
diff --git a/wcfsetup/install/files/style/ui/menuMobile.scss b/wcfsetup/install/files/style/ui/menuMobile.scss
new file mode 100644
index 0000000000..5615ef45b2
--- /dev/null
+++ b/wcfsetup/install/files/style/ui/menuMobile.scss
@@ -0,0 +1,232 @@
+/* animations for overlay appearing from the left */
+@keyframes wcfMenuOverlayLeft {
+	0%   { visibility: hidden;  transform: translateX(-100%); }
+	100% { visibility: visible; transform: translateX(0);     }
+}
+
+@keyframes wcfMenuOverlayLeftOut {
+	0%   { visibility: visible; transform: translateX(0);     }
+	99%  { visibility: visible; transform: translateX(-100%); }
+	100% { visibility: hidden;  transform: translateX(-100%); }
+}
+
+/* animations for overlay appearing from the right */
+@keyframes wcfMenuOverlayRight {
+	0%   { visibility: hidden;  transform: translateX(100%); }
+	100% { visibility: visible; transform: translateX(0);    }
+}
+
+@keyframes wcfMenuOverlayRightOut {
+	0%   { visibility: visible; transform: translateX(0);    }
+	99%  { visibility: visible; transform: translateX(100%); }
+	100% { visibility: hidden;  transform: translateX(100%); }
+}
+
+/* menu container */
+.menuOverlayMobile {
+	bottom: 0;
+	left: 0;
+	overflow: hidden;
+	position: fixed;
+	right: 0;
+	top: 0;
+	visibility: hidden;
+	z-index: 320;
+	
+	&.enableAnimation {
+		animation: wcfMenuOverlayLeftOut .3s;
+		animation-fill-mode: forwards;
+		
+		/* different animation for user menu */
+		&.pageUserMenuMobile {
+			animation-name: wcfMenuOverlayRightOut;
+		}
+	}
+	
+	&.open {
+		animation: wcfMenuOverlayLeft .3s;
+		animation-fill-mode: forwards;
+		
+		/* different animation for user menu */
+		&.pageUserMenuMobile {
+			animation-name: wcfMenuOverlayRight;
+		}
+	}
+	
+	/* work-around to avoid setting explicit visibility */
+	> .menuOverlayItemList:not(.hidden) {
+		visibility: inherit;
+	}
+}
+
+.menuOverlayItemWrapper {
+	display: flex;
+	justify-content: flex-end;
+	
+	> .menuOverlayItemLink {
+		flex: 1 1 auto;
+	}
+}
+
+.menuOverlayItemList {
+	background-color: rgb(44, 62, 80);
+	box-shadow: -5px 0 10px 0 rgba(0, 0, 0, .2);
+	list-style-type: none;
+	margin: 0;
+	padding: 10px 0;
+	position: fixed;
+	top: 0;
+	left: -1px;
+	right: 0;
+	bottom: 0;
+	width: calc(100% + 1px);
+	z-index: 450;
+	transition: margin-left .3s cubic-bezier(.25, .46, .45, .94);
+	transition-timing-function: linear;
+	will-change: margin-left;
+	
+	/* chaining `.hidden` and `.active` below is required because each active
+	   item list receives `.active` but it could still be `.hidden` due to
+	   a child list being active */
+	&.hidden,
+	&.hidden.active {
+		margin-left: -25%;
+	}
+}
+
+.menuOverlayItemSpacer {
+	margin-top: 20px;
+	
+	/* avoid successive spacers piling up */
+	& + .menuOverlayItemSpacer {
+		display: none;
+	}
+}
+
+.menuOverlayItem {
+	&:not(:last-child) {
+		margin-bottom: 1px
+	}
+	
+	/* nested item list */
+	> .menuOverlayItemList {
+		margin-left: 110%;
+		z-index: 500;
+		
+		&.active {
+			margin-left: 0;
+			overflow: scroll;
+		}
+	}
+}
+
+.menuOverlayItemLink,
+.menuOverlayTitle,
+.menuOverlayBackLink {
+	color: rgb(255, 255, 255);
+	display: block;
+	font-size: 14px;
+	padding: 10px 30px;
+	position: relative;
+}
+
+.menuOverlayItemLink {
+	background-color: rgb(52, 73, 94);
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+	
+	.icon::before {
+		color: #fff;
+	}
+	
+	/* wrapper class for links containing an additional badge */
+	&.menuOverlayItemBadge {
+		align-items: center;
+		display: flex;
+		padding-right: 10px;
+		
+		/* different padding if there is no additional icon after the link,
+		   ensures proper alignment for links with badges containing a child
+		   item list */
+		&:last-child {
+			/* 55px = 10px padding + 1px margin + icon */
+			/* icon = 2x 10px padding + 16px width */
+			padding-right: 55px;
+		}
+		
+		> .menuOverlayItemTitle {
+			flex: 1 1 auto;
+			overflow: hidden;
+			text-overflow: ellipsis;
+		}
+		
+		> .badge {
+			flex: 0 0 auto;
+		}
+	}
+	
+	&.menuOverlayItemLinkMore::after {
+		color: rgb(204, 204, 204);
+		content: $fa-var-angle-right;
+		display: block;
+		font-family: FontAwesome;
+		font-size: 24px;
+		position: absolute;
+		right: 10px;
+		top: 50%;
+		transform: translateY(-50%);
+	}
+}
+
+.menuOverlayTitle {
+	color: rgb(204, 204, 204);
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+	
+	&:not(:first-child) {
+		margin-top: 10px;
+	}
+}
+
+/* icon link sharing the space with a link or (header only) the logo */
+.menuOverlayItemLinkIcon {
+	background-color: rgb(52, 73, 94);
+	flex: 0 0 auto;
+	margin-left: 1px;
+	padding: 10px;
+	
+	/* force explicit dimensions because no each .icon24 is of equal height/width */
+	height: 44px;
+	width: 44px;
+	
+	> .icon::before {
+		color: #fff;
+	}
+}
+
+.menuOverlayBackLink::before {
+	color: rgb(204, 204, 204);
+	content: $fa-var-angle-left;
+	display: block;
+	font-family: FontAwesome;
+	font-size: 18px;
+	position: absolute;
+	left: 10px;
+	top: 50%;
+	transform: translateY(-50%);
+}
+
+.menuOverlayLogoWrapper {
+	flex: 1 1 auto;
+	padding: 5px;
+	display: flex;
+	
+	.menuOverlayLogo {
+		flex: 1 1 auto;
+		background-size: contain;
+		background-repeat: no-repeat;
+		background-position: center;
+	}
+}
diff --git a/wcfsetup/install/files/style/ui/redactor.scss b/wcfsetup/install/files/style/ui/redactor.scss
index 438f0c0735..387365f860 100644
--- a/wcfsetup/install/files/style/ui/redactor.scss
+++ b/wcfsetup/install/files/style/ui/redactor.scss
@@ -188,7 +188,7 @@
 }
 
 /* disable auto zoom in mobile safari */
-@media only screen and (max-width: 800px) {
+@include small-screen-only {
 	.redactor-editor + textarea {
 		font-size: 16px;
 		max-height: 500px;
diff --git a/wcfsetup/install/files/style/ui/tabMenuMessage.scss b/wcfsetup/install/files/style/ui/tabMenuMessage.scss
index cbd6d08bfb..c327133438 100644
--- a/wcfsetup/install/files/style/ui/tabMenuMessage.scss
+++ b/wcfsetup/install/files/style/ui/tabMenuMessage.scss
@@ -101,7 +101,7 @@
 	}
 }
 
-@media only screen and (max-width: 800px) {
+@include small-screen-only {
 	.messageTabMenu {
 		> nav > ul > li:not(.active) > a {
 			> span.icon {
-- 
2.20.1