diff --git a/package-lock.json b/package-lock.json
index e781ced49..1310a5e2e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -77,7 +77,6 @@
         "cordova-plugin-media-capture": "^3.0.3",
         "cordova-plugin-network-information": "^2.0.2",
         "cordova-plugin-prevent-override": "^1.0.0",
-        "cordova-plugin-screen-orientation": "^3.0.2",
         "cordova-plugin-splashscreen": "^6.0.0",
         "cordova-plugin-statusbar": "^2.4.3",
         "cordova-plugin-whitelist": "^1.3.4",
@@ -11201,18 +11200,6 @@
         }
       }
     },
-    "node_modules/cordova-plugin-screen-orientation": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/cordova-plugin-screen-orientation/-/cordova-plugin-screen-orientation-3.0.2.tgz",
-      "integrity": "sha512-2w6CMC+HGvbhogJetalwGurL2Fx8DQCCPy3wlSZHN1/W7WoQ5n9ujVozcoKrY4VaagK6bxrPFih+ElkO8Uqfzg==",
-      "engines": {
-        "cordovaDependencies": {
-          "4.0.0": {
-            "cordova": ">100"
-          }
-        }
-      }
-    },
     "node_modules/cordova-plugin-splashscreen": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/cordova-plugin-splashscreen/-/cordova-plugin-splashscreen-6.0.0.tgz",
@@ -12799,6 +12786,7 @@
       "version": "0.1.13",
       "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.13.tgz",
       "integrity": "sha512-ETBauow1T35Y/WZMkio9jiM0Z5xjHHmJ4XmjZOq1l/dXz3lr2sRn87nJy20RupqSh1F2m3HHPSp8ShIPQJrJ3A==",
+      "devOptional": true,
       "dependencies": {
         "iconv-lite": "^0.6.2"
       }
@@ -12807,6 +12795,7 @@
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
       "integrity": "sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==",
+      "devOptional": true,
       "dependencies": {
         "safer-buffer": ">= 2.1.2 < 3.0.0"
       },
@@ -39888,11 +39877,6 @@
       "resolved": "https://registry.npmjs.org/cordova-plugin-prevent-override/-/cordova-plugin-prevent-override-1.0.0.tgz",
       "integrity": "sha512-/+3q5r4K5RahCpiYVmZQBjq10x4jj+6CMjYtZyx9jdMWeV+yFE+ItFcO1NeUAEWd2iHC5YPD0P2tHiHx5kscsw=="
     },
-    "cordova-plugin-screen-orientation": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/cordova-plugin-screen-orientation/-/cordova-plugin-screen-orientation-3.0.2.tgz",
-      "integrity": "sha512-2w6CMC+HGvbhogJetalwGurL2Fx8DQCCPy3wlSZHN1/W7WoQ5n9ujVozcoKrY4VaagK6bxrPFih+ElkO8Uqfzg=="
-    },
     "cordova-plugin-splashscreen": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/cordova-plugin-splashscreen/-/cordova-plugin-splashscreen-6.0.0.tgz",
@@ -41147,6 +41131,7 @@
       "version": "0.1.13",
       "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.13.tgz",
       "integrity": "sha512-ETBauow1T35Y/WZMkio9jiM0Z5xjHHmJ4XmjZOq1l/dXz3lr2sRn87nJy20RupqSh1F2m3HHPSp8ShIPQJrJ3A==",
+      "devOptional": true,
       "requires": {
         "iconv-lite": "^0.6.2"
       },
@@ -41155,6 +41140,7 @@
           "version": "0.6.2",
           "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
           "integrity": "sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==",
+          "devOptional": true,
           "requires": {
             "safer-buffer": ">= 2.1.2 < 3.0.0"
           }
diff --git a/package.json b/package.json
index cc8e30643..bff141856 100644
--- a/package.json
+++ b/package.json
@@ -106,7 +106,6 @@
     "cordova-plugin-media-capture": "^3.0.3",
     "cordova-plugin-network-information": "^2.0.2",
     "cordova-plugin-prevent-override": "^1.0.0",
-    "cordova-plugin-screen-orientation": "^3.0.2",
     "cordova-plugin-splashscreen": "^6.0.0",
     "cordova-plugin-statusbar": "^2.4.3",
     "cordova-plugin-whitelist": "^1.3.4",
@@ -217,7 +216,6 @@
       },
       "cordova-plugin-network-information": {},
       "@moodlehq/cordova-plugin-qrscanner": {},
-      "cordova-plugin-screen-orientation": {},
       "cordova-plugin-splashscreen": {},
       "cordova-plugin-statusbar": {},
       "cordova-plugin-whitelist": {},
@@ -247,4 +245,4 @@
   "optionalDependencies": {
     "keytar": "^7.2.0"
   }
-}
+}
\ No newline at end of file
diff --git a/scripts/langindex.json b/scripts/langindex.json
index 174a16271..18166ff20 100644
--- a/scripts/langindex.json
+++ b/scripts/langindex.json
@@ -1574,6 +1574,7 @@
   "core.dftimedate": "local_moodlemobileapp",
   "core.digitalminor": "moodle",
   "core.digitalminor_desc": "moodle",
+  "core.disablefullscreen": "h5p",
   "core.discard": "local_moodlemobileapp",
   "core.dismiss": "local_moodlemobileapp",
   "core.displayoptions": "atto_media",
@@ -1658,6 +1659,7 @@
   "core.forcepasswordchangenotice": "moodle",
   "core.fulllistofcourses": "moodle",
   "core.fullnameandsitename": "local_moodlemobileapp",
+  "core.fullscreen": "h5p",
   "core.grades.aggregatemean": "grades",
   "core.grades.aggregatesum": "grades",
   "core.grades.average": "grades",
diff --git a/src/addons/block/activitymodules/components/activitymodules/addon-block-activitymodules.html b/src/addons/block/activitymodules/components/activitymodules/addon-block-activitymodules.html
index 2306e3b4b..27d105e90 100644
--- a/src/addons/block/activitymodules/components/activitymodules/addon-block-activitymodules.html
+++ b/src/addons/block/activitymodules/components/activitymodules/addon-block-activitymodules.html
@@ -3,7 +3,7 @@
         <h2>{{ 'addon.block_activitymodules.pluginname' | translate }}</h2>
     </ion-label>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <ion-item class="ion-text-wrap item-media" *ngFor="let entry of entries" detail="true" button
         (click)="gotoCoureListModType(entry)">
         <core-mod-icon slot="start" [modicon]="entry.icon" [modname]="entry.modName" [showAlt]="false">
diff --git a/src/addons/block/myoverview/components/myoverview/addon-block-myoverview.html b/src/addons/block/myoverview/components/myoverview/addon-block-myoverview.html
index b6e750c9f..2394d5a8b 100644
--- a/src/addons/block/myoverview/components/myoverview/addon-block-myoverview.html
+++ b/src/addons/block/myoverview/components/myoverview/addon-block-myoverview.html
@@ -39,8 +39,8 @@
         </core-context-menu>
     </div>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
-    <div class="safe-padding-horizontal" [hidden]="showFilter || !showSelectorFilter">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
+    <div class="safe-area-padding-horizontal" [hidden]="showFilter || !showSelectorFilter">
         <!-- "Time" selector. -->
         <core-combobox [label]="'core.show' | translate" [selection]="selectedFilter" (onChange)="selectedChanged($event)">
             <ion-select-option class="ion-text-wrap" value="allincludinghidden" *ngIf="showFilters.allincludinghidden != 'hidden'">
@@ -87,7 +87,7 @@
     </core-empty-box>
 
     <!-- List of courses. -->
-    <div class="safe-area-page">
+    <div class="safe-area-padding">
         <ion-grid class="ion-no-padding">
             <ion-row class="ion-no-padding">
                 <ion-col *ngFor="let course of filteredCourses" class="ion-no-padding"
diff --git a/src/addons/block/recentlyaccessedcourses/components/recentlyaccessedcourses/addon-block-recentlyaccessedcourses.html b/src/addons/block/recentlyaccessedcourses/components/recentlyaccessedcourses/addon-block-recentlyaccessedcourses.html
index e24897fe1..d4a503b64 100644
--- a/src/addons/block/recentlyaccessedcourses/components/recentlyaccessedcourses/addon-block-recentlyaccessedcourses.html
+++ b/src/addons/block/recentlyaccessedcourses/components/recentlyaccessedcourses/addon-block-recentlyaccessedcourses.html
@@ -21,7 +21,7 @@
         </core-horizontal-scroll-controls>
     </div>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="safe-area-page margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <core-empty-box *ngIf="courses.length == 0" image="assets/img/icons/courses.svg" inline="true"
         [message]="'addon.block_recentlyaccessedcourses.nocourses' | translate"></core-empty-box>
     <!-- List of courses. -->
@@ -31,10 +31,12 @@
         (scroll)="scrollControls.updateScrollPosition()"
     >
         <div (onResize)="scrollControls.updateScrollPosition()" class="flex-row">
+            <div class="safe-area-pseudo-padding-start"></div>
             <ng-container *ngFor="let course of courses">
                 <core-courses-course-progress [course]="course" class="core-recentlyaccessedcourses"
                     [showDownload]="downloadCourseEnabled && downloadEnabled"></core-courses-course-progress>
             </ng-container>
+            <div class="safe-area-pseudo-padding-end"></div>
         </div>
     </div>
 </core-loading>
diff --git a/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/addon-block-recentlyaccesseditems.html b/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/addon-block-recentlyaccesseditems.html
index 73e52969f..cf85821ef 100644
--- a/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/addon-block-recentlyaccesseditems.html
+++ b/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/addon-block-recentlyaccesseditems.html
@@ -5,7 +5,7 @@
         </core-horizontal-scroll-controls>
     </div>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="safe-area-page">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <div
         [id]="scrollElementId"
         [hidden]="!items || items.length === 0"
@@ -13,7 +13,8 @@
         (scroll)="scrollControls.updateScrollPosition()"
     >
         <div *ngIf="items" (onResize)="scrollControls.updateScrollPosition()" class="flex-row">
-            <div *ngFor="let item of items">
+            <div class="safe-area-pseudo-padding-start"></div>
+            <div *ngFor="let item of items" class="core-horizontal-scroll-item">
                 <ion-card>
                     <ion-item class="core-course-module-handler item-media ion-text-wrap" detail="false" (click)="action($event, item)"
                         button>
@@ -35,6 +36,7 @@
                     </ion-item>
                 </ion-card>
             </div>
+            <div class="safe-area-pseudo-padding-end"></div>
         </div>
     </div>
 
diff --git a/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/recentlyaccesseditems.scss b/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/recentlyaccesseditems.scss
index 06802f880..62c797d58 100644
--- a/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/recentlyaccesseditems.scss
+++ b/src/addons/block/recentlyaccesseditems/components/recentlyaccesseditems/recentlyaccesseditems.scss
@@ -1,12 +1,12 @@
 @import "~theme/globals";
 
 :host {
-    .core-horizontal-scroll > div > div {
+    .core-horizontal-scroll div.core-horizontal-scroll-item {
         @include horizontal_scroll_item(80%, 250px, 300px);
     }
 
     .core-course-module-handler {
-        --inner-border-width: 0;
+        --inner-border-width: 0px;
     }
     core-loading {
         --loading-inline-min-height: 102px;
diff --git a/src/addons/block/sitemainmenu/components/sitemainmenu/addon-block-sitemainmenu.html b/src/addons/block/sitemainmenu/components/sitemainmenu/addon-block-sitemainmenu.html
index f5e50c8f7..e18016290 100644
--- a/src/addons/block/sitemainmenu/components/sitemainmenu/addon-block-sitemainmenu.html
+++ b/src/addons/block/sitemainmenu/components/sitemainmenu/addon-block-sitemainmenu.html
@@ -3,7 +3,7 @@
         <h2>{{ 'addon.block_sitemainmenu.pluginname' | translate }}</h2>
     </ion-label>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <ng-container *ngIf="mainMenuBlock">
         <ion-item class="ion-text-wrap" *ngIf="mainMenuBlock.summary">
             <ion-label>
diff --git a/src/addons/block/starredcourses/components/starredcourses/addon-block-starredcourses.html b/src/addons/block/starredcourses/components/starredcourses/addon-block-starredcourses.html
index 703863301..32fbdc9fb 100644
--- a/src/addons/block/starredcourses/components/starredcourses/addon-block-starredcourses.html
+++ b/src/addons/block/starredcourses/components/starredcourses/addon-block-starredcourses.html
@@ -21,7 +21,7 @@
         </core-horizontal-scroll-controls>
     </div>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="safe-area-page margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <core-empty-box *ngIf="courses.length == 0" image="assets/img/icons/courses.svg" inline="true"
         [message]="'addon.block_starredcourses.nocourses' | translate"></core-empty-box>
     <!-- List of courses. -->
@@ -32,10 +32,12 @@
         (scroll)="scrollControls.updateScrollPosition()"
     >
         <div (onResize)="scrollControls.updateScrollPosition()" class="flex-row">
+            <div class="safe-area-pseudo-padding-start"></div>
             <ng-container *ngFor="let course of courses">
                 <core-courses-course-progress [course]="course" class="core-block_starredcourses"
                     [showDownload]="downloadCourseEnabled && downloadEnabled"></core-courses-course-progress>
             </ng-container>
+            <div class="safe-area-pseudo-padding-end"></div>
         </div>
     </div>
 </core-loading>
diff --git a/src/addons/block/timeline/components/timeline/addon-block-timeline.html b/src/addons/block/timeline/components/timeline/addon-block-timeline.html
index f8d82393d..62105627c 100644
--- a/src/addons/block/timeline/components/timeline/addon-block-timeline.html
+++ b/src/addons/block/timeline/components/timeline/addon-block-timeline.html
@@ -9,8 +9,8 @@
         </core-context-menu-item>
     </core-context-menu>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
-    <div class="safe-padding-horizontal">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
+    <div class="safe-area-padding-horizontal">
         <core-combobox [selection]="filter" (onChange)="switchFilter($event)">
             <ion-select-option class="ion-text-wrap" value="all">
                 {{ 'core.all' | translate }}
@@ -35,12 +35,12 @@
             </ion-select-option>
         </core-combobox>
     </div>
-    <core-loading [hideUntil]="timeline.loaded" [hidden]="sort != 'sortbydates'" [fullscreen]="false" class="margin">
+    <core-loading [hideUntil]="timeline.loaded" [hidden]="sort != 'sortbydates'" [fullscreen]="false">
         <addon-block-timeline-events [events]="timeline.events" showCourse="true" [canLoadMore]="timeline.canLoadMore"
             (loadMore)="loadMoreTimeline()" [from]="dataFrom" [to]="dataTo"></addon-block-timeline-events>
     </core-loading>
     <core-loading [hideUntil]="timelineCourses.loaded" [hidden]="sort != 'sortbycourses'"
-        [fullscreen]="false" class="safe-area-page margin">
+        [fullscreen]="false" class="safe-area-padding">
         <ion-grid class="ion-no-padding">
             <ion-row class="ion-no-padding">
                 <ion-col *ngFor="let course of timelineCourses.courses" class="ion-no-padding" size="12" size-md="6">
diff --git a/src/addons/calendar/components/calendar/addon-calendar-calendar.html b/src/addons/calendar/components/calendar/addon-calendar-calendar.html
index 570926c23..fe3cf2895 100644
--- a/src/addons/calendar/components/calendar/addon-calendar-calendar.html
+++ b/src/addons/calendar/components/calendar/addon-calendar-calendar.html
@@ -8,7 +8,7 @@
     </core-context-menu>
 </core-navbar-buttons>
 
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
     <!-- Period name and arrows to navigate. -->
     <ion-grid class="ion-no-padding addon-calendar-navigation">
         <ion-row class="ion-align-items-center">
diff --git a/src/addons/calendar/pages/day/day.html b/src/addons/calendar/pages/day/day.html
index c0e8bb1d7..7580d07b1 100644
--- a/src/addons/calendar/pages/day/day.html
+++ b/src/addons/calendar/pages/day/day.html
@@ -26,7 +26,7 @@
     </ion-refresher>
 
     <!-- Period name and arrows to navigate. -->
-    <ion-grid class="ion-no-padding safe-area-page">
+    <ion-grid class="ion-no-padding safe-area-padding">
         <ion-row class="ion-align-items-center">
             <ion-col class="ion-text-start" *ngIf="currentMoment">
                 <ion-button fill="clear" (click)="loadPrevious()" [attr.aria-label]="'addon.calendar.dayprev' | translate">
@@ -44,7 +44,7 @@
         </ion-row>
     </ion-grid>
 
-    <core-loading [hideUntil]="loaded" class="safe-area-page">
+    <core-loading [hideUntil]="loaded" class="safe-area-padding">
         <!-- There is data to be synchronized -->
         <ion-card class="core-warning-card" *ngIf="hasOffline">
             <ion-item>
diff --git a/src/addons/messages/pages/discussion/discussion.html b/src/addons/messages/pages/discussion/discussion.html
index 346fe8573..0ac439fa6 100644
--- a/src/addons/messages/pages/discussion/discussion.html
+++ b/src/addons/messages/pages/discussion/discussion.html
@@ -60,7 +60,7 @@
     </core-navbar-buttons>
 </ion-header>
 <ion-content class="has-footer" (ionScroll)="scrollFunction()">
-    <core-loading [hideUntil]="loaded" class="safe-area-page">
+    <core-loading [hideUntil]="loaded" class="safe-area-padding-horizontal">
         <!-- Load previous messages. -->
         <core-infinite-loading [enabled]="canLoadMore" (action)="loadPrevious($event)" position="top" [error]="loadMoreError">
         </core-infinite-loading>
@@ -138,8 +138,8 @@
         </ion-fab-button>
     </ion-fab>
 </ion-content>
-<ion-footer color="light" class="footer-adjustable" *ngIf="loaded && (!conversationId || conversation)">
-    <ion-toolbar color="light">
+<ion-footer class="footer-adjustable" *ngIf="loaded && (!conversationId || conversation)">
+    <ion-toolbar [color]="footerType == 'message' ? 'contrast' : 'light'">
         <p *ngIf="footerType == 'unable'" class="ion-text-center ion-margin-horizontal">
             {{ 'addon.messages.unabletomessage' | translate }}
         </p>
diff --git a/src/addons/mod/assign/components/submission/addon-mod-assign-submission.html b/src/addons/mod/assign/components/submission/addon-mod-assign-submission.html
index 89d14abeb..7858fdad1 100644
--- a/src/addons/mod/assign/components/submission/addon-mod-assign-submission.html
+++ b/src/addons/mod/assign/components/submission/addon-mod-assign-submission.html
@@ -1,4 +1,4 @@
-<core-loading [hideUntil]="loaded" class="margin">
+<core-loading [hideUntil]="loaded">
 
     <!-- User and status of the submission. -->
     <ion-item class="ion-text-wrap" *ngIf="!blindMarking && user" core-user-link [userId]="submitId" [courseId]="courseId"
diff --git a/src/addons/mod/book/components/index/addon-mod-book-index.html b/src/addons/mod/book/components/index/addon-mod-book-index.html
index 9a74d77b9..7be6e735b 100644
--- a/src/addons/mod/book/components/index/addon-mod-book-index.html
+++ b/src/addons/mod/book/components/index/addon-mod-book-index.html
@@ -38,7 +38,7 @@
         </ion-item>
     </ion-card>
 
-    <div class="ion-padding safe-padding-horizontal">
+    <div class="ion-padding safe-area-padding-horizontal">
         <core-navigation-bar *ngIf="displayNavBar" [previous]="previousChapter?.id"
             [previousTitle]="previousNavBarTitle" [next]="nextChapter?.id" [nextTitle]="nextNavBarTitle"
             (action)="changeChapter($event)">
diff --git a/src/addons/mod/chat/components/index/addon-mod-chat-index.html b/src/addons/mod/chat/components/index/addon-mod-chat-index.html
index 9d58151d0..8f1069746 100644
--- a/src/addons/mod/chat/components/index/addon-mod-chat-index.html
+++ b/src/addons/mod/chat/components/index/addon-mod-chat-index.html
@@ -24,7 +24,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/chat/pages/chat/chat.html b/src/addons/mod/chat/pages/chat/chat.html
index 87e3b16e5..cd983f9f0 100644
--- a/src/addons/mod/chat/pages/chat/chat.html
+++ b/src/addons/mod/chat/pages/chat/chat.html
@@ -15,7 +15,7 @@
     </ion-toolbar>
 </ion-header>
 <ion-content class="has-footer">
-    <core-loading [hideUntil]="loaded" class="safe-area-page">
+    <core-loading [hideUntil]="loaded" class="safe-area-padding">
         <ion-list class="addon-messages-discussion-container" aria-live="polite">
             <ng-container *ngFor="let message of messages; index as index; last as last">
 
@@ -109,8 +109,8 @@
         </core-empty-box>
     </core-loading>
 </ion-content>
-<ion-footer color="light" class="footer-adjustable">
-    <ion-toolbar color="light">
+<ion-footer class="footer-adjustable">
+    <ion-toolbar [color]="isOnline && polling && loaded ? 'contrast' : 'light'">
         <p class="ion-text-center" *ngIf="!isOnline">
             {{ 'addon.mod_chat.mustbeonlinetosendmessages' | translate }}
         </p>
diff --git a/src/addons/mod/chat/pages/session-messages/session-messages.html b/src/addons/mod/chat/pages/session-messages/session-messages.html
index f9706469e..275819ac5 100644
--- a/src/addons/mod/chat/pages/session-messages/session-messages.html
+++ b/src/addons/mod/chat/pages/session-messages/session-messages.html
@@ -10,7 +10,7 @@
     <ion-refresher slot="fixed" [disabled]="!loaded" (ionRefresh)="refreshMessages($event.target)">
         <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
     </ion-refresher>
-    <core-loading [hideUntil]="loaded" class="safe-area-page">
+    <core-loading [hideUntil]="loaded" class="safe-area-padding">
         <ion-list class="addon-messages-discussion-container">
             <ng-container *ngFor="let message of messages; index as index;">
 
diff --git a/src/addons/mod/data/data-forms.scss b/src/addons/mod/data/data-forms.scss
index 2834bfc25..17b000650 100644
--- a/src/addons/mod/data/data-forms.scss
+++ b/src/addons/mod/data/data-forms.scss
@@ -4,7 +4,7 @@
 :host {
     --input-border-color: var(--gray);
     --input-border-width: 1px;
-    --select-border-width: 0;
+    --select-border-width: 0px;
 
     ::ng-deep {
         table {
diff --git a/src/addons/mod/forum/components/post-options-menu/post-options-menu.html b/src/addons/mod/forum/components/post-options-menu/post-options-menu.html
index e1fe50448..eed4aa8ac 100644
--- a/src/addons/mod/forum/components/post-options-menu/post-options-menu.html
+++ b/src/addons/mod/forum/components/post-options-menu/post-options-menu.html
@@ -1,4 +1,4 @@
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <ion-item button class="ion-text-wrap" (click)="editPost()" *ngIf="offlinePost || (canEdit && isOnline)" detail="false">
         <ion-icon name="fas-pen" slot="start" aria-hidden="true"></ion-icon>
         <ion-label>
diff --git a/src/addons/mod/h5pactivity/components/index/addon-mod-h5pactivity-index.html b/src/addons/mod/h5pactivity/components/index/addon-mod-h5pactivity-index.html
index 90158fa9a..ca3d3524f 100644
--- a/src/addons/mod/h5pactivity/components/index/addon-mod-h5pactivity-index.html
+++ b/src/addons/mod/h5pactivity/components/index/addon-mod-h5pactivity-index.html
@@ -34,7 +34,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/h5pactivity/pages/attempt-results/attempt-results.scss b/src/addons/mod/h5pactivity/pages/attempt-results/attempt-results.scss
index e2cfa01c3..006127a5b 100644
--- a/src/addons/mod/h5pactivity/pages/attempt-results/attempt-results.scss
+++ b/src/addons/mod/h5pactivity/pages/attempt-results/attempt-results.scss
@@ -2,7 +2,7 @@
 
 :host {
     .core-warning-item {
-        --inner-border-width: 0;
+        --inner-border-width: 0px;
     }
 
     .addon-mod_h5pactivity-attempt-result-summary {
diff --git a/src/addons/mod/imscp/components/index/addon-mod-imscp-index.html b/src/addons/mod/imscp/components/index/addon-mod-imscp-index.html
index 05c5b3cff..98901925b 100644
--- a/src/addons/mod/imscp/components/index/addon-mod-imscp-index.html
+++ b/src/addons/mod/imscp/components/index/addon-mod-imscp-index.html
@@ -26,7 +26,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/lti/components/index/addon-mod-lti-index.html b/src/addons/mod/lti/components/index/addon-mod-lti-index.html
index c2756f087..184f09284 100644
--- a/src/addons/mod/lti/components/index/addon-mod-lti-index.html
+++ b/src/addons/mod/lti/components/index/addon-mod-lti-index.html
@@ -17,7 +17,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/page/components/index/addon-mod-page-index.html b/src/addons/mod/page/components/index/addon-mod-page-index.html
index cce3a3faf..fcc229d26 100644
--- a/src/addons/mod/page/components/index/addon-mod-page-index.html
+++ b/src/addons/mod/page/components/index/addon-mod-page-index.html
@@ -23,7 +23,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/resource/components/index/addon-mod-resource-index.html b/src/addons/mod/resource/components/index/addon-mod-resource-index.html
index fc449c7cf..704d31dd1 100644
--- a/src/addons/mod/resource/components/index/addon-mod-resource-index.html
+++ b/src/addons/mod/resource/components/index/addon-mod-resource-index.html
@@ -18,7 +18,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page core-loading-fullheight">
+<core-loading [hideUntil]="loaded" class="safe-area-padding core-loading-fullheight">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/scorm/components/index/addon-mod-scorm-index.html b/src/addons/mod/scorm/components/index/addon-mod-scorm-index.html
index 2990b1519..23c75ba08 100644
--- a/src/addons/mod/scorm/components/index/addon-mod-scorm-index.html
+++ b/src/addons/mod/scorm/components/index/addon-mod-scorm-index.html
@@ -26,7 +26,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/addons/mod/scorm/pages/player/player.html b/src/addons/mod/scorm/pages/player/player.html
index 5bf9e6959..02e55ff42 100644
--- a/src/addons/mod/scorm/pages/player/player.html
+++ b/src/addons/mod/scorm/pages/player/player.html
@@ -21,7 +21,9 @@
     <core-loading [hideUntil]="loaded" class="core-loading-fullheight">
         <core-navigation-bar [previous]="previousSco" [next]="nextSco" (action)="loadSco($event)"></core-navigation-bar>
 
-        <core-iframe *ngIf="loaded && src" [src]="src" [iframeWidth]="scormWidth" [iframeHeight]="scormHeight"></core-iframe>
+        <core-iframe *ngIf="loaded && src" [src]="src" [iframeWidth]="scormWidth" [iframeHeight]="scormHeight"
+            [showFullscreenOnToolbar]="true" [autoFullscreenOnRotate]="true">
+        </core-iframe>
 
         <p *ngIf="!src && errorMessage">{{ errorMessage | translate }}</p>
     </core-loading>
diff --git a/src/addons/mod/scorm/pages/player/player.ts b/src/addons/mod/scorm/pages/player/player.ts
index 74bf853c9..ad6555c82 100644
--- a/src/addons/mod/scorm/pages/player/player.ts
+++ b/src/addons/mod/scorm/pages/player/player.ts
@@ -66,7 +66,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
     protected moduleUrl!: string; // Module URL.
     protected newAttempt = false; // Whether to start a new attempt.
     protected organizationId?: string; // Organization ID to load.
-    protected attempt?: number; // The attempt number.
+    protected attempt = 0; // The attempt number.
     protected offline = false; // Whether it's offline mode.
     protected userData?: AddonModScormUserDataMap; // User data.
     protected initialScoId?: number; // Initial SCO ID to load.
@@ -96,7 +96,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             this.newAttempt = !!CoreNavigator.getRouteBooleanParam('newAttempt');
             this.organizationId = CoreNavigator.getRouteParam('organizationId');
             this.initialScoId = CoreNavigator.getRouteNumberParam('scoId');
-            this.siteId = CoreSites.getCurrentSiteId();
+            this.siteId = CoreSites.getRequiredCurrentSite().getId();
         } catch (error) {
             CoreDomUtils.showErrorModal(error);
 
@@ -150,14 +150,12 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
         this.showToc = AddonModScorm.displayTocInPlayer(this.scorm);
 
         if (this.scorm.popup) {
-            this.mainMenuPage.changeVisibility(false);
-
             // If we receive a value > 100 we assume it's a fixed pixel size.
-            if (this.scorm.width! > 100) {
+            if (this.scorm.width && this.scorm.width > 100) {
                 this.scormWidth = this.scorm.width;
 
                 // Only get fixed size on height if width is also fixed.
-                if (this.scorm.height! > 100) {
+                if (this.scorm.height && this.scorm.height > 100) {
                     this.scormHeight = this.scorm.height;
                 }
             }
@@ -198,7 +196,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             // Wait a bit to prevent collisions between this store and SCORM API's store.
             setTimeout(async () => {
                 try {
-                    AddonModScormHelper.convertAttemptToOffline(this.scorm, this.attempt!);
+                    AddonModScormHelper.convertAttemptToOffline(this.scorm, this.attempt);
                 } catch (error) {
                     CoreDomUtils.instance.showErrorModalDefault(error, 'core.error', true);
                 }
@@ -292,7 +290,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             await this.determineAttemptAndMode(attemptsData);
 
             const [data, accessInfo] = await Promise.all([
-                AddonModScorm.getScormUserData(this.scorm.id, this.attempt!, {
+                AddonModScorm.getScormUserData(this.scorm.id, this.attempt, {
                     cmId: this.cmId,
                     offline: this.offline,
                 }),
@@ -319,13 +317,13 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
 
         try {
             // We need to check incomplete again: attempt number or status might have changed.
-            this.incomplete = await AddonModScorm.isAttemptIncomplete(this.scorm.id, this.attempt!, {
+            this.incomplete = await AddonModScorm.isAttemptIncomplete(this.scorm.id, this.attempt, {
                 offline: this.offline,
                 cmId: this.cmId,
             });
 
             // Get TOC.
-            this.toc = await AddonModScormHelper.getToc(this.scorm.id, this.attempt!, this.incomplete, {
+            this.toc = await AddonModScormHelper.getToc(this.scorm.id, this.attempt, this.incomplete, {
                 organization: this.organizationId,
                 offline: this.offline,
                 cmId: this.cmId,
@@ -351,7 +349,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             }
 
             // No SCO defined. Get the first valid one.
-            const sco = await AddonModScormHelper.getFirstSco(this.scorm.id, this.attempt!, {
+            const sco = await AddonModScormHelper.getFirstSco(this.scorm.id, this.attempt, {
                 toc: this.toc,
                 organization: this.organizationId,
                 mode: this.mode,
@@ -383,7 +381,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
                 this.siteId,
                 this.scorm,
                 sco.id,
-                this.attempt!,
+                this.attempt,
                 this.userData!,
                 this.mode,
                 this.offline,
@@ -446,14 +444,14 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
         }];
 
         try {
-            AddonModScorm.saveTracks(sco.id, this.attempt!, tracks, this.scorm, this.offline);
+            AddonModScorm.saveTracks(sco.id, this.attempt, tracks, this.scorm, this.offline);
         } catch {
             // Error saving data. Go offline if needed.
             if (this.offline) {
                 return;
             }
 
-            const data = await AddonModScorm.getScormUserData(this.scorm.id, this.attempt!, {
+            const data = await AddonModScorm.getScormUserData(this.scorm.id, this.attempt, {
                 cmId: this.cmId,
             });
 
@@ -464,12 +462,12 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
 
             try {
                 // Go offline.
-                await AddonModScormHelper.convertAttemptToOffline(this.scorm, this.attempt!);
+                await AddonModScormHelper.convertAttemptToOffline(this.scorm, this.attempt);
 
                 this.offline = true;
                 this.dataModel?.setOffline(true);
 
-                await AddonModScorm.saveTracks(sco.id, this.attempt!, tracks, this.scorm, true);
+                await AddonModScorm.saveTracks(sco.id, this.attempt, tracks, this.scorm, true);
             } catch (error) {
                 CoreDomUtils.instance.showErrorModalDefault(error, 'core.error', true);
             }
@@ -528,7 +526,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             value: String(CoreTimeUtils.timestamp()),
         }];
 
-        await AddonModScorm.saveTracks(scoId, this.attempt!, tracks, this.scorm, this.offline);
+        await AddonModScorm.saveTracks(scoId, this.attempt, tracks, this.scorm, this.offline);
 
         if (this.offline) {
             return;
@@ -541,22 +539,6 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
         }));
     }
 
-    /**
-     * @inheritdoc
-     */
-    ionViewDidEnter(): void {
-        if (this.scorm && this.scorm.popup) {
-            this.mainMenuPage.changeVisibility(false);
-        }
-    }
-
-    /**
-     * @inheritdoc
-     */
-    ionViewWillLeave(): void {
-        this.mainMenuPage.changeVisibility(true);
-    }
-
     /**
      * Component being destroyed.
      */
diff --git a/src/addons/mod/survey/components/index/addon-mod-survey-index.html b/src/addons/mod/survey/components/index/addon-mod-survey-index.html
index 80b973f89..5bf012e3e 100644
--- a/src/addons/mod/survey/components/index/addon-mod-survey-index.html
+++ b/src/addons/mod/survey/components/index/addon-mod-survey-index.html
@@ -27,7 +27,7 @@
 </core-navbar-buttons>
 
 <!-- Content. -->
-<core-loading [hideUntil]="loaded" class="safe-area-page">
+<core-loading [hideUntil]="loaded" class="safe-area-padding">
 
     <!-- Activity info. -->
     <core-course-module-info *ngIf="showCompletion" [module]="module" [showManualCompletion]="true"
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 23cf1f6c5..84047aeca 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -63,7 +63,6 @@ export class AppComponent implements OnInit, AfterViewInit {
      * - IAB events listening.
      * - Platform pause/resume subscriptions.
      * - handleOpenURL and openWindowSafely.
-     * - Screen orientation events (probably it can be removed).
      * - Back button registering to close modal first.
      * - Note: HideKeyboardFormAccessoryBar has been moved to config.xml.
      */
diff --git a/src/core/components/combobox/combobox.scss b/src/core/components/combobox/combobox.scss
index 950503000..501321352 100644
--- a/src/core/components/combobox/combobox.scss
+++ b/src/core/components/combobox/combobox.scss
@@ -2,6 +2,7 @@
 
 :host {
     max-width: 100%;
+    @include margin-horizontal(var(--ion-safe-area-left), var(--ion-safe-area-right));
 
     ion-select,
     ion-button {
diff --git a/src/core/components/iframe/core-iframe.html b/src/core/components/iframe/core-iframe.html
index ca6c2ecce..a3dbdfae0 100644
--- a/src/core/components/iframe/core-iframe.html
+++ b/src/core/components/iframe/core-iframe.html
@@ -1,4 +1,13 @@
 <div [class.core-loading-container]="loading || !safeUrl" [ngStyle]="{'width': iframeWidth, 'height': iframeHeight}">
+
+    <core-navbar-buttons slot="end" append *ngIf="initialized && showFullscreenOnToolbar">
+        <ion-button fill="clear" (click)="toggleFullscreen()"
+            [attr.aria-label]="(fullscreen ? 'core.disablefullscreen' : 'core.fullscreen') | translate" >
+            <ion-icon *ngIf="!fullscreen" name="fas-expand" slot="icon-only" aria-hidden="true"></ion-icon>
+            <ion-icon *ngIf="fullscreen" name="fas-compress" slot="icon-only" aria-hidden="true"></ion-icon>
+        </ion-button>
+    </core-navbar-buttons>
+    
     <!-- Don't add the iframe until safeUrl is set, adding an iframe with null as src causes the iframe to load the whole app. -->
     <iframe #iframe *ngIf="safeUrl" [hidden]="loading" class="core-iframe"
         [ngStyle]="{'width': iframeWidth, 'height': iframeHeight}" [src]="safeUrl"
diff --git a/src/core/components/iframe/iframe.scss b/src/core/components/iframe/iframe.scss
index d50e6d82e..a0707c17e 100644
--- a/src/core/components/iframe/iframe.scss
+++ b/src/core/components/iframe/iframe.scss
@@ -30,3 +30,14 @@
         }
     }
 }
+
+:host-context(.core-iframe-fullscreen) {
+    position: absolute;
+    top: 0px;
+    bottom: 0px;
+    left: 0px;
+    right: 0px;
+    width: 100%;
+    height: 100%;
+    z-index: 9999;
+}
diff --git a/src/core/components/iframe/iframe.ts b/src/core/components/iframe/iframe.ts
index 48ee9a60c..bf57b1443 100644
--- a/src/core/components/iframe/iframe.ts
+++ b/src/core/components/iframe/iframe.ts
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import {
-    Component, Input, Output, ViewChild, ElementRef, EventEmitter, OnChanges, SimpleChange,
+    Component, Input, Output, ViewChild, ElementRef, EventEmitter, OnChanges, SimpleChange, OnDestroy,
 } from '@angular/core';
 import { SafeResourceUrl } from '@angular/platform-browser';
 
@@ -22,15 +22,16 @@ import { CoreDomUtils } from '@services/utils/dom';
 import { CoreUrlUtils } from '@services/utils/url';
 import { CoreIframeUtils } from '@services/utils/iframe';
 import { CoreUtils } from '@services/utils/utils';
-import { CoreLogger } from '@singletons/logger';
-import { DomSanitizer } from '@singletons';
+import { DomSanitizer, StatusBar } from '@singletons';
+import { CoreEventObserver, CoreEvents } from '@singletons/events';
+import { CoreScreen, CoreScreenOrientation } from '@services/screen';
 
 @Component({
     selector: 'core-iframe',
     templateUrl: 'core-iframe.html',
     styleUrls: ['iframe.scss'],
 })
-export class CoreIframeComponent implements OnChanges {
+export class CoreIframeComponent implements OnChanges, OnDestroy {
 
     static loadingTimeout = 15000;
 
@@ -39,17 +40,21 @@ export class CoreIframeComponent implements OnChanges {
     @Input() iframeWidth?: string;
     @Input() iframeHeight?: string;
     @Input() allowFullscreen?: boolean | string;
+    @Input() showFullscreenOnToolbar?: boolean | string;
+    @Input() autoFullscreenOnRotate?: boolean | string;
     @Output() loaded: EventEmitter<HTMLIFrameElement> = new EventEmitter<HTMLIFrameElement>();
 
     loading?: boolean;
     safeUrl?: SafeResourceUrl;
     displayHelp = false;
+    fullscreen = false;
 
-    protected logger: CoreLogger;
-    protected initialized = false;
+    initialized = false;
+
+    protected style?: HTMLStyleElement;
+    protected orientationObs?: CoreEventObserver;
 
     constructor() {
-        this.logger = CoreLogger.getInstance('CoreIframe');
         this.loaded = new EventEmitter<HTMLIFrameElement>();
     }
 
@@ -71,6 +76,25 @@ export class CoreIframeComponent implements OnChanges {
         this.iframeWidth = (this.iframeWidth && CoreDomUtils.formatPixelsSize(this.iframeWidth)) || '100%';
         this.iframeHeight = (this.iframeHeight && CoreDomUtils.formatPixelsSize(this.iframeHeight)) || '100%';
         this.allowFullscreen = CoreUtils.isTrueOrOne(this.allowFullscreen);
+        this.showFullscreenOnToolbar = CoreUtils.isTrueOrOne(this.showFullscreenOnToolbar);
+        this.autoFullscreenOnRotate = CoreUtils.isTrueOrOne(this.autoFullscreenOnRotate);
+
+        if (this.showFullscreenOnToolbar || this.autoFullscreenOnRotate) {
+            const shadow =
+                iframe.closest('.ion-page')?.querySelector('ion-header ion-toolbar')?.shadowRoot;
+            if (shadow) {
+                this.style = document.createElement('style');
+                shadow.appendChild(this.style);
+            }
+
+            if (this.autoFullscreenOnRotate) {
+                this.toggleFullscreen(CoreScreen.isLandscape);
+
+                this.orientationObs = CoreEvents.on(CoreEvents.ORIENTATION_CHANGE, (data) => {
+                    this.toggleFullscreen(data.orientation == CoreScreenOrientation.LANDSCAPE);
+                });
+            }
+        }
 
         // Show loading only with external URLs.
         this.loading = !this.src || !CoreUrlUtils.isLocalFileUrl(this.src);
@@ -120,4 +144,35 @@ export class CoreIframeComponent implements OnChanges {
         CoreIframeUtils.openIframeHelpModal();
     }
 
+    /**
+     * @inheritdoc
+     */
+    ngOnDestroy(): void {
+        this.toggleFullscreen(false);
+        this.orientationObs?.off();
+    }
+
+    /**
+     * Toggle fullscreen mode.
+     */
+    toggleFullscreen(enable?: boolean): void {
+        if (enable !== undefined) {
+            this.fullscreen = enable;
+        } else {
+            this.fullscreen = !this.fullscreen;
+        }
+
+        this.fullscreen ? StatusBar.hide() : StatusBar.show();
+
+        if (this.style) {
+            // Done this way because of the shadow DOM.
+            this.style.textContent = this.fullscreen
+                ? '@media screen and (orientation: landscape) {\
+                    .toolbar-container { flex-direction: column-reverse !important; height: 100%; } }'
+                : '';
+        }
+
+        document.body.classList.toggle('core-iframe-fullscreen', this.fullscreen);
+    }
+
 }
diff --git a/src/core/components/loading/loading.scss b/src/core/components/loading/loading.scss
index 60b6358fc..c3cfbf655 100644
--- a/src/core/components/loading/loading.scss
+++ b/src/core/components/loading/loading.scss
@@ -5,7 +5,7 @@
     --loading-background-inline: var(--ion-background-color-rgb);
     --loading-spinner: var(--ion-color-primary);
     --loading-text-color: var(--ion-text-color);
-    --loading-inline-margin: 0;
+    --loading-inline-margin: 0px;
     --loading-inline-min-height: 28px;
     --internal-loading-inline-min-height: var(--loading-inline-min-height);
 
@@ -19,7 +19,7 @@
     }
 
     &.core-loading-loaded {
-        --internal-loading-inline-min-height: 0;
+        --internal-loading-inline-min-height: 0px;
     }
 
     ion-spinner {
@@ -74,6 +74,18 @@
             flex-direction: row;
         }
     }
+
+    &.safe-area-padding:not(.core-loading-inline) .core-loading-content,
+    &.safe-area-padding-horizontal:not(.core-loading-inline) .core-loading-content {
+        @include safe-area-padding-horizontal(0px, 0px);
+    }
+
+    &.safe-area-padding:not(.core-loading-inline) .core-loading-content {
+        padding-bottom: var(--ion-safe-area-bottom);
+        > * {
+            --ion-safe-area-bottom: 0px;
+        }
+    }
 }
 
 :host-context(ion-item) {
diff --git a/src/core/components/show-password/show-password.scss b/src/core/components/show-password/show-password.scss
index 2fdbcf5da..b5feb9e38 100644
--- a/src/core/components/show-password/show-password.scss
+++ b/src/core/components/show-password/show-password.scss
@@ -1,3 +1,5 @@
+@import "~theme/globals";
+
 :host {
     display: contents;
 
@@ -5,7 +7,7 @@
         background: transparent;
         padding: 0 calc(var(--padding-start) / 2);
         position: absolute;
-        right: 0;
+        @include safe-area-position(null, 0px, null, null);
         margin-top: 0;
         margin-bottom: 0;
         z-index: 3;
@@ -16,11 +18,6 @@
     --padding-end: 47px !important;
 }
 
-:host-context([dir="rtl"]) ion-button {
-    left: 0;
-    right: unset;
-}
-
 :host-context(.md.item-label.stacked) ion-button {
     bottom: 0;
 }
diff --git a/src/core/components/split-view/split-view.scss b/src/core/components/split-view/split-view.scss
index aa2d3ba72..1524a38c6 100644
--- a/src/core/components/split-view/split-view.scss
+++ b/src/core/components/split-view/split-view.scss
@@ -64,18 +64,18 @@
 }
 
 :host(.menu-only) {
-    --menu-min-width: 0;
+    --menu-min-width: 0px;
     --menu-max-width: 100%;
     --content-display: none;
-    --menu-border-width: 0;
+    --menu-border-width: 0px;
     --menu-box-shadow: none;
-    --menu-z: 0;
+    --menu-z: 0px;
     --selected-item-color: transparent;
 }
 
 :host(.content-only) {
     --menu-display: none;
-    --menu-border-width: 0;
+    --menu-border-width: 0px;
 }
 
 :host(.outlet-activated) {
diff --git a/src/core/components/tabs/tabs.scss b/src/core/components/tabs/tabs.scss
index 2c383ab5b..dbc1f28e7 100644
--- a/src/core/components/tabs/tabs.scss
+++ b/src/core/components/tabs/tabs.scss
@@ -15,8 +15,8 @@
 
     ion-tab-bar.core-tabs-bar {
         position: relative;
-        width: 100%;
         background: var(--tabs-background);
+        @include safe-area-padding-end(null, 0px);
         height: var(--height);
         color: var(--tabs-color);
         -webkit-filter: drop-shadow(0px 3px 3px rgba(var(--drop-shadow)));
diff --git a/src/core/features/block/components/course-blocks/core-block-course-blocks.html b/src/core/features/block/components/course-blocks/core-block-course-blocks.html
index 74e57a9b2..120e60749 100644
--- a/src/core/features/block/components/course-blocks/core-block-course-blocks.html
+++ b/src/core/features/block/components/course-blocks/core-block-course-blocks.html
@@ -3,7 +3,7 @@
 </div>
 
 <div *ngIf="blocks && blocks.length > 0 && !hideBlocks" [class.core-hide-blocks]="hideBottomBlocks" class="core-course-blocks-side">
-    <core-loading [hideUntil]="dataLoaded" [fullscreen]="false" class="margin">
+    <core-loading [hideUntil]="dataLoaded" [fullscreen]="false">
         <ion-list>
             <!-- Course expand="block"s. -->
             <ng-container *ngFor="let block of blocks">
diff --git a/src/core/features/block/components/course-blocks/course-blocks.scss b/src/core/features/block/components/course-blocks/course-blocks.scss
index cba246bb4..c7ba5b65e 100644
--- a/src/core/features/block/components/course-blocks/course-blocks.scss
+++ b/src/core/features/block/components/course-blocks/course-blocks.scss
@@ -16,6 +16,8 @@
                 box-shadow: none !important;
                 flex-grow: 1;
                 max-width: 100%;
+
+                --ion-safe-area-right: 0px;
             }
 
             div.core-course-blocks-side {
diff --git a/src/core/features/block/components/pre-rendered-block/core-block-pre-rendered.html b/src/core/features/block/components/pre-rendered-block/core-block-pre-rendered.html
index f1cf8b8d4..46b579a07 100644
--- a/src/core/features/block/components/pre-rendered-block/core-block-pre-rendered.html
+++ b/src/core/features/block/components/pre-rendered-block/core-block-pre-rendered.html
@@ -7,7 +7,7 @@
         </h2>
     </ion-label>
 </ion-item-divider>
-<core-loading [hideUntil]="loaded" [fullscreen]="false" class="margin">
+<core-loading [hideUntil]="loaded" [fullscreen]="false">
     <ion-item *ngIf="block.contents?.content" class="ion-text-wrap core-block-content">
         <ion-label>
             <core-format-text [text]="block.contents?.content" contextLevel="block" [contextInstanceId]="block.instanceid"
diff --git a/src/core/features/comments/components/comments/core-comments.html b/src/core/features/comments/components/comments/core-comments.html
index 250109e6f..12e8d444b 100644
--- a/src/core/features/comments/components/comments/core-comments.html
+++ b/src/core/features/comments/components/comments/core-comments.html
@@ -1,5 +1,5 @@
 <ng-container *ngIf="!disabled">
-    <core-loading *ngIf="!showItem" [hideUntil]="commentsLoaded" [fullscreen]="false" class="margin">
+    <core-loading *ngIf="!showItem" [hideUntil]="commentsLoaded" [fullscreen]="false">
         <button *ngIf="!countError" (click)="openComments($event)" class="as-link">
             {{ 'core.comments.commentscount' | translate : {'$a': commentsCount} }}
         </button>
diff --git a/src/core/features/comments/pages/viewer/viewer.html b/src/core/features/comments/pages/viewer/viewer.html
index ada1872c0..b85e367b3 100644
--- a/src/core/features/comments/pages/viewer/viewer.html
+++ b/src/core/features/comments/pages/viewer/viewer.html
@@ -119,8 +119,8 @@
 
     </core-loading>
 </ion-content>
-<ion-footer color="light" class="footer-adjustable" *ngIf="commentsLoaded && canAddComments">
-    <ion-toolbar color="light">
+<ion-footer class="footer-adjustable" *ngIf="commentsLoaded && canAddComments">
+    <ion-toolbar color="contrast">
         <core-send-message-form [sendDisabled]="sending" [message]="newComment"
             (onSubmit)="addComment($event)" [placeholder]="'core.comments.addcomment' | translate">
         </core-send-message-form>
diff --git a/src/core/features/course/components/format/core-course-format.html b/src/core/features/course/components/format/core-course-format.html
index 705b9aeb7..def9a3009 100644
--- a/src/core/features/course/components/format/core-course-format.html
+++ b/src/core/features/course/components/format/core-course-format.html
@@ -98,7 +98,7 @@
                 <core-infinite-loading [enabled]="canLoadMore" (action)="showMoreActivities($event)"></core-infinite-loading>
             </div>
 
-            <ion-buttons class="ion-padding core-course-section-nav-buttons safe-padding-horizontal"
+            <ion-buttons class="ion-padding core-course-section-nav-buttons safe-area-padding-horizontal"
                 *ngIf="displaySectionSelector && sections?.length">
                 <ion-button *ngIf="previousSection" (click)="sectionChanged(previousSection)" fill="outline" color="primary"
                     [attr.aria-label]="('core.previous' | translate) + ': ' + previousSection.name">
diff --git a/src/core/features/course/components/module-completion-legacy/module-completion-legacy.scss b/src/core/features/course/components/module-completion-legacy/module-completion-legacy.scss
index a0fd0020d..0eedd0acf 100644
--- a/src/core/features/course/components/module-completion-legacy/module-completion-legacy.scss
+++ b/src/core/features/course/components/module-completion-legacy/module-completion-legacy.scss
@@ -12,9 +12,9 @@
     }
 
     ion-button {
-        --padding-top: 0;
-        --padding-start: 0;
-        --padding-end: 0;
-        --padding-bottom: 0;
+        --padding-top: 0px;
+        --padding-start: 0px;
+        --padding-end: 0px;
+        --padding-bottom: 0px;
     }
 }
diff --git a/src/core/features/course/components/module-info/course-module-info.scss b/src/core/features/course/components/module-info/course-module-info.scss
new file mode 100644
index 000000000..ddf0beb55
--- /dev/null
+++ b/src/core/features/course/components/module-info/course-module-info.scss
@@ -0,0 +1,6 @@
+@import '~theme/globals.scss';
+
+:host {
+    display: block;
+    @include padding-horizontal(var(--ion-safe-area-left), var(--ion-safe-area-right));
+}
\ No newline at end of file
diff --git a/src/core/features/course/components/module-info/module-info.ts b/src/core/features/course/components/module-info/module-info.ts
index c4748fe4c..254ad3c7c 100644
--- a/src/core/features/course/components/module-info/module-info.ts
+++ b/src/core/features/course/components/module-info/module-info.ts
@@ -21,6 +21,7 @@ import { CoreCourseModule, CoreCourseModuleCompletionData } from '@features/cour
 @Component({
     selector: 'core-course-module-info',
     templateUrl: 'core-course-module-info.html',
+    styleUrls: ['course-module-info.scss'],
 })
 export class CoreCourseModuleInfoComponent {
 
diff --git a/src/core/features/course/components/module/module.scss b/src/core/features/course/components/module/module.scss
index 666c11512..aaeaa86a3 100644
--- a/src/core/features/course/components/module/module.scss
+++ b/src/core/features/course/components/module/module.scss
@@ -56,7 +56,7 @@
     }
 
     .core-module-main-item.has-module-info {
-        --inner-border-width: 0;
+        --inner-border-width: 0px;
     }
 
     .core-module-module-info ion-label {
diff --git a/src/core/features/courses/pages/my-courses/my-courses.html b/src/core/features/courses/pages/my-courses/my-courses.html
index bb3fd00b0..2e22ce7ee 100644
--- a/src/core/features/courses/pages/my-courses/my-courses.html
+++ b/src/core/features/courses/pages/my-courses/my-courses.html
@@ -37,7 +37,7 @@
         <ion-searchbar #searchbar *ngIf="courses && courses.length > 5" [(ngModel)]="filter" (ionInput)="filterChanged($event)"
             (ionCancel)="filterChanged()" [placeholder]="'core.courses.filtermycourses' | translate">
         </ion-searchbar>
-        <ion-grid class="ion-no-padding safe-area-page">
+        <ion-grid class="ion-no-padding safe-area-padding">
             <ion-row class="ion-no-padding">
                 <ion-col *ngFor="let course of filteredCourses" class="ion-no-padding"
                     size="12" size-sm="6" size-md="6" size-lg="4" size-xl="4">
diff --git a/src/core/features/grades/pages/course/course.html b/src/core/features/grades/pages/course/course.html
index 3883ca2d3..4b301f9ba 100644
--- a/src/core/features/grades/pages/course/course.html
+++ b/src/core/features/grades/pages/course/course.html
@@ -11,7 +11,7 @@
         <ion-refresher slot="fixed" [disabled]="!grades.loaded" (ionRefresh)="refreshGrades($event.target)">
             <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
         </ion-refresher>
-        <core-loading [hideUntil]="grades.loaded" class="safe-area-page">
+        <core-loading [hideUntil]="grades.loaded" class="safe-area-padding">
             <core-empty-box *ngIf="grades.empty" icon="fas-chart-bar" [message]="'core.grades.nogradesreturned' | translate">
             </core-empty-box>
             <div *ngIf="!grades.empty" class="core-grades-container">
diff --git a/src/core/features/h5p/components/h5p-iframe/core-h5p-iframe.html b/src/core/features/h5p/components/h5p-iframe/core-h5p-iframe.html
index acb3d16ff..52020bec3 100644
--- a/src/core/features/h5p/components/h5p-iframe/core-h5p-iframe.html
+++ b/src/core/features/h5p/components/h5p-iframe/core-h5p-iframe.html
@@ -1,4 +1,4 @@
-<core-loading [hideUntil]="iframeSrc" [fullscreen]="false" class="safe-area-page">
+<core-loading [hideUntil]="iframeSrc" [fullscreen]="false" class="safe-area-padding">
     <core-iframe *ngIf="iframeSrc" [src]="iframeSrc" iframeHeight="auto" [allowFullscreen]="true" (loaded)="iframeLoaded()">
     </core-iframe>
     <script *ngIf="resizeScript && iframeSrc" type="text/javascript" [src]="resizeScript"></script>
diff --git a/src/core/features/mainmenu/pages/menu/menu.scss b/src/core/features/mainmenu/pages/menu/menu.scss
index 3bb190a5e..53f005f0d 100644
--- a/src/core/features/mainmenu/pages/menu/menu.scss
+++ b/src/core/features/mainmenu/pages/menu/menu.scss
@@ -51,12 +51,14 @@
         ion-tab-bar {
             order: -1;
             width: var(--menutabbar-size);
-            height: 100%;
+            height: calc(100% - var(--ion-safe-area-top) - var(--ion-safe-area-bottom));
             flex-direction: column;
             @include border-end(var(--border));
             box-shadow: 3px 0 3px rgba(var(--drop-shadow));
             border-top: 0;
 
+            @include padding(var(--ion-safe-area-top), 0px, var(--ion-safe-area-bottom), var(--ion-safe-area-left));
+
             ion-tab-button {
                 width: 100%;
                 height: auto;
@@ -68,6 +70,7 @@
     }
 
     .core-network-message {
+        --network-message-height: 16px;
         position: absolute;
         bottom: 0;
         left: 0;
@@ -80,6 +83,7 @@
         height: 0;
         transition: all 500ms ease-in-out;
         opacity: .8;
+        z-index: 12;
     }
 
     .core-online-message,
@@ -100,7 +104,8 @@
 
     .core-network-message {
         visibility: visible;
-        height: 16px;
+        height: var(--network-message-height);
+        padding-bottom: calc(var(--ion-safe-area-bottom, 0px) + var(--network-message-height));
         pointer-events: none;
     }
 }
diff --git a/src/core/features/search/components/search-box/search-box.scss b/src/core/features/search/components/search-box/search-box.scss
index 2501ff47a..e3d84473a 100644
--- a/src/core/features/search/components/search-box/search-box.scss
+++ b/src/core/features/search/components/search-box/search-box.scss
@@ -32,8 +32,8 @@
     }
 
     ion-input {
-        --padding-start: 0;
-        --padding-end: 0;
+        --padding-start: 0px;
+        --padding-end: 0px;
         padding-left: 0;
         padding-right: 0;
     }
diff --git a/src/core/features/settings/services/settings-helper.ts b/src/core/features/settings/services/settings-helper.ts
index ee07046d5..51e7a9c1f 100644
--- a/src/core/features/settings/services/settings-helper.ts
+++ b/src/core/features/settings/services/settings-helper.ts
@@ -388,8 +388,8 @@ export class CoreSettingsHelperProvider {
      */
     applyZoomLevel(zoomLevel: CoreZoomLevel): void {
         const zoom = CoreConstants.CONFIG.zoomlevels[zoomLevel];
-        // @todo MOBILE-3790 non-standard property, doesn't work everywhere.
-        document.documentElement.style.zoom = zoom + '%';
+
+        document.documentElement.style.setProperty('--zoom-level', zoom + '%');
     }
 
     /**
diff --git a/src/core/features/siteplugins/components/plugin-content/core-siteplugins-plugin-content.html b/src/core/features/siteplugins/components/plugin-content/core-siteplugins-plugin-content.html
index 95f612eff..2126b11fb 100644
--- a/src/core/features/siteplugins/components/plugin-content/core-siteplugins-plugin-content.html
+++ b/src/core/features/siteplugins/components/plugin-content/core-siteplugins-plugin-content.html
@@ -1,4 +1,4 @@
-<core-loading [hideUntil]="dataLoaded" [fullscreen]="false" class="margin">
+<core-loading [hideUntil]="dataLoaded" [fullscreen]="false">
     <core-compile-html [text]="content" [javascript]="javascript" [jsData]="jsData" [forceCompile]="forceCompile" #compile>
     </core-compile-html>
 </core-loading>
diff --git a/src/core/features/tag/pages/search/search.html b/src/core/features/tag/pages/search/search.html
index e4b26e7bd..5afa3e371 100644
--- a/src/core/features/tag/pages/search/search.html
+++ b/src/core/features/tag/pages/search/search.html
@@ -10,7 +10,7 @@
     <ion-refresher slot="fixed" [disabled]="!loaded" (ionRefresh)="refreshData($event.target)">
         <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
     </ion-refresher>
-    <ion-grid class="safe-area-page">
+    <ion-grid class="safe-area-padding">
         <ion-row>
             <ion-col size="12" [attr.col-sm-6]="collections && collections.length > 1 ? '' : null">
                 <core-search-box (onSubmit)="searchTags($event)" (onClear)="searchTags('')" [initialSearch]="query"
@@ -28,7 +28,7 @@
             </ion-col>
         </ion-row>
     </ion-grid>
-    <core-loading [hideUntil]="loaded && !searching" class="safe-area-page">
+    <core-loading [hideUntil]="loaded && !searching" class="safe-area-padding">
         <core-empty-box *ngIf="!cloud || !cloud!.tags || !cloud!.tags.length" icon="fas-tags"
             [message]="'core.tag.notagsfound' | translate: {$a: query}"></core-empty-box>
 
diff --git a/src/core/features/viewer/components/text/text.html b/src/core/features/viewer/components/text/text.html
index cda8ec03e..10248ad3f 100644
--- a/src/core/features/viewer/components/text/text.html
+++ b/src/core/features/viewer/components/text/text.html
@@ -18,7 +18,7 @@
         <core-file *ngFor="let file of files" [file]="file" [component]="component" [componentId]="componentId"></core-file>
     </ion-card>
 </ion-content>
-<ion-footer color="light" *ngIf="displayCopyButton">
+<ion-footer *ngIf="displayCopyButton">
     <ion-button expand="block" color="light" (click)="copyText()">
         <ion-icon name="fas-copy" aria-hidden="true" slot="start"></ion-icon>
         {{ 'core.copytoclipboard' | translate }}
diff --git a/src/core/initializers/watch-screen-viewport.ts b/src/core/initializers/watch-screen-status.ts
similarity index 95%
rename from src/core/initializers/watch-screen-viewport.ts
rename to src/core/initializers/watch-screen-status.ts
index 23e1210b0..ee4d5fcf1 100644
--- a/src/core/initializers/watch-screen-viewport.ts
+++ b/src/core/initializers/watch-screen-status.ts
@@ -16,4 +16,6 @@ import { CoreScreen } from '@services/screen';
 
 export default function(): void {
     CoreScreen.watchViewport();
+
+    CoreScreen.watchOrientation();
 }
diff --git a/src/core/lang.json b/src/core/lang.json
index dff3a1052..02beb3878 100644
--- a/src/core/lang.json
+++ b/src/core/lang.json
@@ -82,6 +82,7 @@
     "dftimedate": "h[:]mm A",
     "digitalminor": "Digital minor",
     "digitalminor_desc": "Please ask your parent/guardian to contact:",
+    "disablefullscreen": "Disable fullscreen",
     "discard": "Discard",
     "dismiss": "Dismiss",
     "displayoptions": "Display options",
@@ -123,6 +124,7 @@
     "forcepasswordchangenotice": "You must change your password to proceed.",
     "fulllistofcourses": "All courses",
     "fullnameandsitename": "{{fullname}} ({{sitename}})",
+    "fullscreen": "Fullscreen",
     "group": "Group",
     "groupsseparate": "Separate groups",
     "groupsvisible": "Visible groups",
diff --git a/src/core/services/screen.ts b/src/core/services/screen.ts
index b53dcbcb7..6228f7700 100644
--- a/src/core/services/screen.ts
+++ b/src/core/services/screen.ts
@@ -17,6 +17,7 @@ import { BehaviorSubject, Observable } from 'rxjs';
 import { distinctUntilChanged, map } from 'rxjs/operators';
 
 import { makeSingleton } from '@singletons';
+import { CoreEvents } from '@singletons/events';
 
 /**
  * Screen breakpoints.
@@ -48,6 +49,14 @@ export enum CoreScreenLayout {
     TABLET = 'tablet',
 }
 
+/**
+ * Screen orientation.
+ */
+export enum CoreScreenOrientation {
+    LANDSCAPE = 'landscape',
+    PORTRAIT = 'portrait',
+}
+
 /**
  * Manage application screen.
  */
@@ -93,6 +102,32 @@ export class CoreScreenService {
         return this.layout === CoreScreenLayout.TABLET;
     }
 
+    get orientation(): CoreScreenOrientation {
+        const mql = window.matchMedia('(orientation: portrait)');
+
+        return mql.matches ? CoreScreenOrientation.PORTRAIT : CoreScreenOrientation.LANDSCAPE;
+    }
+
+    get isPortrait(): boolean {
+        return this.orientation === CoreScreenOrientation.PORTRAIT;
+    }
+
+    get isLandscape(): boolean {
+        return this.orientation === CoreScreenOrientation.LANDSCAPE;
+    }
+
+    /**
+     * Watch orientation changes.
+     */
+    watchOrientation(): void {
+        // Listen media orientation CSS queries.
+        window.matchMedia('(orientation: portrait)').addEventListener('change', (m) => {
+            const orientation = m.matches ? CoreScreenOrientation.PORTRAIT : CoreScreenOrientation.LANDSCAPE;
+
+            CoreEvents.trigger(CoreEvents.ORIENTATION_CHANGE, { orientation });
+        });
+    }
+
     /**
      * Watch viewport changes.
      */
diff --git a/src/core/singletons/events.ts b/src/core/singletons/events.ts
index 0c622f77b..49aa650a5 100644
--- a/src/core/singletons/events.ts
+++ b/src/core/singletons/events.ts
@@ -19,6 +19,7 @@ import { CoreSite, CoreSiteInfoResponse, CoreSitePublicConfigResponse } from '@c
 import { CoreFilepoolComponentFileEventData } from '@services/filepool';
 import { CoreNavigationOptions } from '@services/navigator';
 import { CoreCourseModuleCompletionData } from '@features/course/services/course-helper';
+import { CoreScreenOrientation } from '@services/screen';
 
 /**
  * Observer instance to stop listening to an event.
@@ -55,6 +56,7 @@ export interface CoreEventsData {
     [CoreEvents.COMPONENT_FILE_ACTION]: CoreFilepoolComponentFileEventData;
     [CoreEvents.FILE_SHARED]: CoreEventFileSharedData;
     [CoreEvents.APP_LAUNCHED_URL]: CoreEventAppLaunchedData;
+    [CoreEvents.ORIENTATION_CHANGE]: CoreEventOrientationData;
 }
 
 /*
@@ -387,3 +389,10 @@ export type CoreEventFileSharedData = {
 export type CoreEventAppLaunchedData = {
     url: string;
 };
+
+/**
+ * Data passed to ORIENTATION_CHANGE event.
+ */
+export type CoreEventOrientationData = {
+    orientation: CoreScreenOrientation;
+};
diff --git a/src/theme/components/discussion.scss b/src/theme/components/discussion.scss
index 66f450ba9..bf359a84b 100644
--- a/src/theme/components/discussion.scss
+++ b/src/theme/components/discussion.scss
@@ -39,8 +39,8 @@
         overflow: visible;
 
         &::part(native) {
-            --inner-border-width: 0;
-            --inner-padding-end: 0;
+            --inner-border-width: 0px;
+            --inner-padding-end: 0px;
             padding: 0;
             margin: 0;
         }
diff --git a/src/theme/globals.mixins.scss b/src/theme/globals.mixins.scss
index 52031a533..c871f18b3 100644
--- a/src/theme/globals.mixins.scss
+++ b/src/theme/globals.mixins.scss
@@ -50,100 +50,93 @@
 }
 
 @mixin border-start($px, $type: null, $color: null) {
-    @include ltr() {
-        border-left: $px $type $color;
-    }
+    border-left: $px $type $color;
 
     @include rtl() {
+        border-left: unset;
         border-right: $px $type $color;
     }
 }
 
 
 @mixin border-end($px, $type: null, $color: null) {
-    @include ltr() {
-        border-right: $px $type $color;
-    }
+    border-right: $px $type $color;
 
     @include rtl() {
+        border-right: unset;
         border-left: $px $type $color;
     }
 }
 
 @mixin safe-area-border-start($px, $type, $color) {
-    $safe-area-position: calc(constant(safe-area-inset-left) + #{$px});
-    $safe-area-position-env: calc(env(safe-area-inset-left) + #{$px});
+    $safe-area-position: calc(var(--ion-safe-area-left) + #{$px});
 
-    @include border-start($px, $type, $color);
-    @media screen and (orientation: landscape) {
-        @include border-start($safe-area-position, $type, $color);
-        @include border-start($safe-area-position-env, $type, $color);
-    }
+    @include border-start($safe-area-position, $type, $color);
 }
 
 @mixin safe-area-border-end($px, $type, $color) {
-    $safe-area-position: calc(constant(safe-area-inset-right) + #{$px});
-    $safe-area-position-env: calc(env(safe-area-inset-right) + #{$px});
+    $safe-area-position: calc(var(--ion-safe-area-right) + #{$px});
 
-    @include border-end($px, $type, $color);
-    @media screen and (orientation: landscape) {
-        @include border-end($safe-area-position, $type, $color);
-        @include border-end($safe-area-position-env, $type, $color);
-    }
+    @include border-end($safe-area-position, $type, $color);
 }
 
 @mixin safe-area-margin-horizontal($start, $end: $start) {
     $safe-area-end: null;
     $safe-area-start: null;
-    $safe-area-start-env: null;
-    $safe-area-end-env: null;
 
     @if ($end) {
-        $safe-area-end: calc(constant(safe-area-inset-right) + #{$end});
-        $safe-area-end-env: calc(env(safe-area-inset-right) + #{$end});
+        $safe-area-end: calc(var(--ion-safe-area-right) + #{$end});
     }
     @if ($start) {
-        $safe-area-start: calc(constant(safe-area-inset-left) + #{$start});
-        $safe-area-start-env: calc(env(safe-area-inset-left) + #{$start});
+        $safe-area-start: calc(var(--ion-safe-area-left) + #{$start});
     }
 
-    @include margin-horizontal($start, $end);
+    @include margin-horizontal($safe-area-start, $safe-area-end);
+}
 
-    @media screen and (orientation: landscape) {
-        @include margin-horizontal($safe-area-start, $safe-area-end);
-        @include margin-horizontal($safe-area-start-env, $safe-area-end-env);
+@mixin safe-area-margin-start($start, $end) {
+    $safe-area-start: calc(var(--ion-safe-area-left) + #{$start});
+
+    @include margin-horizontal($safe-area-start, $end);
+}
+
+@mixin safe-area-margin-end($start, $end) {
+    $safe-area-end: calc(var(--ion-safe-area-right) + #{$end});
+
+    @include margin-horizontal($start, $safe-area-end);
+}
+
+@mixin safe-area-padding-horizontal($start, $end: $start) {
+    $safe-area-end: null;
+    $safe-area-start: null;
+
+    @if ($end) {
+        $safe-area-end: calc(var(--ion-safe-area-right) + #{$end});
     }
+    @if ($start) {
+        $safe-area-start: calc(var(--ion-safe-area-left) + #{$start});
+    }
+
+    @include padding-horizontal($safe-area-start, $safe-area-end);
 }
 
 @mixin safe-area-padding-start($start, $end) {
-    $safe-area-start: calc(constant(safe-area-inset-left) + #{$start});
-    $safe-area-start-env: calc(env(safe-area-inset-left) + #{$start});
+    $safe-area-start: calc(var(--ion-safe-area-left) + #{$start});
 
-    @include padding-horizontal($start, $end);
-
-    @media screen and (orientation: landscape) {
-        @include padding-horizontal($safe-area-start, $end);
-        @include padding-horizontal($safe-area-start-env, $end);
-    }
+    @include padding-horizontal($safe-area-start, $end);
 }
 
 @mixin safe-area-padding-end($start, $end) {
-    $safe-area-end: calc(constant(safe-area-inset-right) + #{$end});
-    $safe-area-end-env: calc(env(safe-area-inset-right) + #{$end});
+    $safe-area-end: calc(var(--ion-safe-area-right) + #{$end});
 
-    @include padding-horizontal($start, $end);
-
-    @media screen and (orientation: landscape) {
-        @include padding-horizontal($start, $safe-area-end);
-        @include padding-horizontal($start, $safe-area-end-env);
-    }
+    @include padding-horizontal($start, $safe-area-end);
 }
 
 @mixin safe-area-position($top: null, $end: null, $bottom: null, $start: null) {
-    @include position-horizontal($start, $end);
-    @include safe-position-horizontal($start, $end);
-    top: $top;
-    bottom: $bottom;
+    $safe-area-start: calc(var(--ion-safe-area-left) + #{$start});
+    $safe-area-end: calc(var(--ion-safe-area-right) + #{$end});
+
+    @include position($top, $safe-area-end, $bottom, $safe-area-start);
 }
 
 @mixin core-headings() {
diff --git a/src/theme/theme.base.scss b/src/theme/theme.base.scss
index 0253a989c..c040c18d3 100644
--- a/src/theme/theme.base.scss
+++ b/src/theme/theme.base.scss
@@ -1,7 +1,19 @@
 @import "./globals.scss";
 
+html.force-safe-area-margins {
+    --ion-safe-area-left: 40px;
+    --ion-safe-area-right: 40px;
+    --ion-safe-area-top: 40px;
+    --ion-safe-area-bottom: 40px;
+}
+
+// @todo MOBILE-3790 non-standard property, doesn't work everywhere.
+html {
+    zoom: var(--zoom-level);
+}
+
 body {
-    -webkit-text-size-adjust: auto;
+    -webkit-text-size-adjust: var(--zoom-level);
 }
 
 // Common styles.
@@ -234,6 +246,10 @@ ion-header ion-toolbar {
     }
 }
 
+ion-footer ion-toolbar.ion-color-contrast {
+    background-color: var(--contrast-background);
+}
+
 // Ionic icon.
 ion-icon {
     position: relative;
@@ -374,7 +390,48 @@ ion-list.list-md {
     padding: 0;
 }
 
+// Safe areas
+.safe-area-padding,
+.safe-area-padding-horizontal {
+    @include padding-horizontal(var(--ion-safe-area-left), var(--ion-safe-area-right));
+}
+
+.safe-area-margin,
+.safe-margin-horizontal {
+    @include margin-horizontal(var(--ion-safe-area-left), var(--ion-safe-area-right));
+}
+
+.ion-padding.safe-area-padding-horizontal {
+    @include safe-area-padding-horizontal(16px, 16px);
+}
+
+.ion-margin.safe-margin-horizontal {
+    @include safe-area-margin-horizontal(16px, 16px);
+}
+
+ion-tabs.placement-side .tabs-inner {
+    --ion-safe-area-left: 0px;
+}
+
+ion-tabs.placement-bottom .tabs-inner {
+    --ion-safe-area-bottom: 0px;
+}
+
+
+core-split-view.menu-and-content {
+    .menu {
+        --ion-safe-area-right: 0px;
+    }
+
+    .content-outlet {
+        --ion-safe-area-left: 0px;
+    }
+}
+
 // Header.
+ion-header {
+    z-index: 12; // To hide ion-slides on scroll.
+}
 ion-tabs.hide-header ion-header {
     display: none;
 }
@@ -384,6 +441,60 @@ ion-toolbar {
     }
 }
 
+// Iframe fullscreen manage.
+// Using router outlet to avoid changing styles on modals.
+body.core-iframe-fullscreen ion-router-outlet {
+
+    ion-tab-bar.mainmenu-tabs {
+        display: none;
+
+        // Restore original safe area.
+        .tabs-inner {
+            @supports (padding-left: constant(safe-area-inset-left)) {
+                --ion-safe-area-left: constant(safe-area-inset-left);
+            }
+            
+            @supports (padding-left: env(safe-area-inset-left)) {
+                --ion-safe-area-left: env(safe-area-inset-left);
+            }
+        }
+    }
+
+    --core-header-toolbar-height: 48px;
+    --core-header-toolbar-color: white;
+    --core-header-toolbar-background: black;
+    --core-header-toolbar-border-width: 0px;
+
+    ion-header ion-toolbar {
+        h1, ion-back-button {
+            display: none;
+        }
+    }
+
+    @media screen and (orientation: landscape) {
+        // Place ion-header on the side and hide text
+        .ion-page {
+            flex-direction: row-reverse;
+            ion-header {
+                width: calc(var(--core-header-toolbar-height), var(--ion-safe-area-right));
+                @include safe-area-padding-horizontal(null, 0px);
+                background: var(--core-header-toolbar-background);
+
+                ion-toolbar {
+                    padding: 0;
+                    height: 100%;
+                    --padding-start: 0px;
+                    --padding-end: 0px;
+                }
+
+                ion-buttons {
+                    flex-direction: column-reverse;
+                }
+            }
+        }
+    }
+}
+
 // Modals.
 .core-modal-fullscreen .modal-wrapper {
     position: absolute;
@@ -399,6 +510,8 @@ ion-toolbar {
 
 @media only screen and (min-height: 400px) and (min-width: 300px) {
     .core-modal-lateral {
+        --ion-safe-area-left: 0px;
+        --ion-safe-area-right: 0px;
 
         .modal-wrapper {
             position: absolute;
@@ -434,9 +547,14 @@ ion-toolbar {
 // Item styles
 [aria-current="page"],
 .item.item-current {
-    // TODO: Add safe area to border and RTL
-    --ion-safe-area-left: calc(-1 * var(--selected-item-border-width));
-    border-inline-start: var(--selected-item-border-width) solid var(--selected-item-color);
+    @include safe-area-border-start(var(--selected-item-border-width), solid,  var(--selected-item-color));
+    > * {
+        --ion-safe-area-left: 0px;
+    }
+
+    &::part(native) {
+        --ion-safe-area-left: 0px;
+    }
 }
 
 .item.item-file {
@@ -467,7 +585,7 @@ ion-toolbar {
         border-bottom: 3px solid var(--color-base);
 
         ion-item {
-            --inner-border-width: 0;
+            --inner-border-width: 0px;
         }
         ion-label {
             white-space: normal !important;
@@ -482,7 +600,7 @@ ion-toolbar {
 
         --border-width: 0 0 3px 0;
         --border-color: var(--color-base);
-        --inner-border-width: 0;
+        --inner-border-width: 0px;
         ion-icon {
             color: var(--color-base);
         }
@@ -528,7 +646,7 @@ img[core-external-content]:not([src]) {
 }
 
 ion-card ion-item:only-child {
-    --inner-border-width: 0;
+    --inner-border-width: 0px;
 }
 
 .core-course-module-handler:not(.addon-mod-label-handler) .item-heading .filter_mathjaxloader_equation div {
@@ -686,10 +804,14 @@ core-block ion-item-divider .core-button-spinner {
 
 // Horizontal scrolling elements
 .core-horizontal-scroll {
-    display: flex;
-    flex-flow: nowrap;
+    display: block;
     overflow-x: scroll;
-    flex-direction: row;
+    .safe-area-pseudo-padding-start {
+        @include padding-horizontal(var(--ion-safe-area-left), 0px);
+    }
+    .safe-area-pseudo-padding-end {
+        @include padding-horizontal(0px, var(--ion-safe-area-right));
+    }
 }
 
 // Text formats.
@@ -952,6 +1074,11 @@ ion-item.item-input ion-input.has-focus {
     }
 }
 
+// Ionic set this value to 0 without px that provoked miscalculations.
+ion-item-divider {
+    --inner-padding-end: 0px;
+}
+
 // Change default outline.
 :focus-visible {
     @include core-focus-style();
diff --git a/src/theme/theme.light.scss b/src/theme/theme.light.scss
index 5c4114512..fb0ad53ec 100644
--- a/src/theme/theme.light.scss
+++ b/src/theme/theme.light.scss
@@ -61,6 +61,7 @@
     --a11y-min-target-size: 44px;
     --a11y-focus-color: var(--primary);
     --a11y-focus-width: 2px;
+    --zoom-level: 100%;
 
     --module-icon-size: 24px;
 
@@ -236,12 +237,17 @@
         --color: var(--subdued-text-color);
     }
 
+    ion-back-button {
+        --min-height: var(--a11y-min-target-size);
+        --min-width: var(--a11y-min-target-size);
+    }
+
     --core-combobox-background: var(--ion-item-background);
     --core-combobox-color: var(--black);
     --core-combobox-border-color: var(--primary);
     --core-combobox-border-width: 3px;
     --core-combobox-border-all-width: 0 0 var(--core-combobox-border-width) 0;
-    --core-combobox-radius: 0;
+    --core-combobox-radius: 0px;
     --core-combobox-box-shadow: 0 3px 1px -2px rgba(0, 0, 0, .2), 0 2px 2px 0 rgba(0, 0, 0, .14), 0 1px 5px 0 rgba(0, 0, 0, .12);
 
     --selected-item-color: var(--primary);