diff --git a/assets/icons/GoodDataLearn.svg b/assets/icons/GoodDataLearn.svg
index 1141bda..932a19d 100644
--- a/assets/icons/GoodDataLearn.svg
+++ b/assets/icons/GoodDataLearn.svg
@@ -1,5 +1,5 @@
-<svg aria-hidden="true" role="img" width="182" height="40" viewBox="0 0 182 40" fill="none" xmlns="http://www.w3.org/2000/svg">
-<title>GoodData Logo</title>
+<svg aria-hidden="true" aria-labelledby="gooddata-logo" role="img" width="182" height="40" viewBox="0 0 182 40" fill="none" xmlns="http://www.w3.org/2000/svg">
+<title id="gooddata-logo">GoodData Logo</title>
 <path d="M35.2037 25.0974C35.0897 20.1201 32.4034 16.1694 28.3023 14.6252V5.9625C27.2667 5.28544 26.1647 4.72568 25.0143 4.29533V22.9319C25.0143 26.6238 23.3398 28.2724 20.6488 28.2724C18.029 28.2724 15.8375 26.2485 15.8375 22.864C15.8375 19.0863 18.7162 16.7793 22.4856 16.7793C22.8347 16.7728 23.1902 16.7914 23.5393 16.8473V13.5493C23.1902 13.4878 22.841 13.4571 22.4856 13.4636C16.8913 13.4636 12.5076 16.971 12.5076 22.8712C12.5076 28.5442 16.4638 31.5711 20.872 31.5711C22.9614 31.5711 24.7681 30.8447 26.015 29.5957C27.2612 28.3468 28.3158 26.5437 28.3158 23.3752V18.2127C30.592 19.3759 31.9648 22.1934 31.9711 25.4177C31.9593 31.4902 26.4489 36.622 19.9877 36.622C19.8373 36.622 19.7225 36.622 19.572 36.6155C15.14 36.6098 11.244 34.9726 8.08818 31.7426C5.81754 29.417 4.26419 26.4572 3.63794 23.2393C3.01169 20.015 3.33075 16.6806 4.56504 13.6407C5.79379 10.6073 7.8768 8.01068 10.5504 6.18334C13.2241 4.356 16.368 3.38369 19.5831 3.38369V0C17.0116 0 14.4647 0.516894 12.0919 1.51995C9.71912 2.523 7.55773 3.99927 5.73916 5.85168C2.06559 9.59857 0 14.6866 0 19.9907C0 25.2939 2.05926 30.3828 5.72649 34.1362C9.39373 37.8895 14.3736 40 19.5649 40H19.9806C21.5767 40 23.1664 39.7476 24.696 39.2615C24.7024 39.2615 24.7079 39.255 24.7143 39.255C26.9239 38.5537 28.9476 37.3597 30.6458 35.7605C33.5783 32.9916 35.1926 29.3312 35.2045 25.4363C35.2101 25.4234 35.2037 25.1038 35.2037 25.0974Z" fill="#1C0D3F"/>
 <path d="M40.4425 19.6372C40.4425 14.0565 44.466 9.56463 50.1149 9.12862C50.4079 9.10112 50.7008 9.10112 51.0206 9.10112C51.3136 9.10112 51.6334 9.10112 51.9002 9.12862C55.8169 9.42792 58.4018 11.633 59.3875 12.9669L56.7764 15.1178C55.6039 13.5388 53.7655 12.3408 51.0214 12.3141C46.9718 12.3141 44.147 15.4721 44.147 19.6097C44.147 23.7748 46.971 26.987 51.0214 26.987C53.2066 26.9595 54.9119 26.3334 56.0837 25.4355V21.8965H50.8876V18.7927H59.5736V27.0412C57.9482 28.5927 55.0972 30.1992 51.0206 30.1992C44.8658 30.1725 40.4425 25.4905 40.4425 19.6372ZM116.479 29.7867V9.55978H123.38C125.832 9.55978 127.964 9.88658 129.882 11.1113C132.68 12.9079 134.411 16.0659 134.411 19.6599C134.411 23.2806 132.679 26.4386 129.882 28.2352C127.964 29.4599 125.832 29.7867 123.38 29.7867H116.479ZM120.13 26.5737H123.247C124.953 26.5737 126.391 26.4378 127.804 25.5116C129.589 24.3136 130.682 22.1085 130.682 19.6316C130.682 17.2089 129.589 15.0038 127.804 13.8058C126.391 12.8804 124.953 12.717 123.221 12.717H120.13V26.5737ZM61.6257 22.2775C61.6257 17.9215 65.0095 14.3825 69.6189 14.3825C74.2821 14.3825 77.639 17.9215 77.639 22.2775C77.639 26.6335 74.2821 30.1992 69.6189 30.1992C64.9826 30.2 61.6257 26.661 61.6257 22.2775ZM136.143 22.3269C136.143 17.9709 139.047 14.4319 143.497 14.4319C145.895 14.4319 147.547 15.4665 148.453 16.6095H148.48L148.64 14.8671H151.971L151.998 29.8126H148.72L148.56 27.9343L148.507 27.9068C147.655 29.159 145.923 30.2478 143.551 30.2478C139.021 30.2494 136.143 26.6829 136.143 22.3269ZM74.0683 22.3325C74.0683 19.6372 72.336 17.4863 69.6189 17.4863C66.9547 17.4863 65.1694 19.6372 65.1694 22.3325C65.1694 24.9461 66.9547 27.0695 69.6189 27.0695C72.3368 27.0695 74.0683 24.9461 74.0683 22.3325ZM148.533 22.3269C148.533 19.6591 146.827 17.5357 144.109 17.5357C141.498 17.5357 139.686 19.6591 139.686 22.3269C139.686 24.9947 141.498 27.1181 144.109 27.1181C146.828 27.1189 148.533 24.9947 148.533 22.3269ZM157.485 27.8809C156.739 26.8738 156.526 25.6758 156.526 24.0968V17.89H153.808V14.8679H156.526V9.28717C156.633 9.31467 156.713 9.34136 156.819 9.39637C157.351 9.61397 157.911 9.83156 158.417 10.1042C158.977 10.4035 159.51 10.7028 160.043 11.0296V14.8679H164.546V17.89H160.043V23.8792C160.043 24.8596 160.176 25.6216 160.575 26.1118C160.948 26.6287 161.561 26.9288 162.334 26.9288C163.213 26.9288 163.906 26.6295 164.305 26.3302L165.611 28.8896C164.971 29.4065 163.559 30.0601 161.854 30.0601C160.07 30.0585 158.418 29.4057 157.485 27.8809ZM79.3713 22.2775C79.3713 17.9215 82.7281 14.3825 87.3644 14.3825C92.0007 14.3825 95.3845 17.9215 95.3845 22.2775C95.3845 26.6335 92.0007 30.1992 87.3644 30.1992C82.7012 30.2 79.3713 26.661 79.3713 22.2775ZM91.8139 22.3325C91.8139 19.6372 90.0555 17.4863 87.3644 17.4863C84.6734 17.4863 82.915 19.6372 82.915 22.3325C82.915 24.9461 84.6734 27.0695 87.3644 27.0695C90.0555 27.0695 91.8139 24.9461 91.8139 22.3325ZM166.145 22.3269C166.145 17.9709 169.049 14.4319 173.499 14.4319C175.897 14.4319 177.549 15.4665 178.455 16.6095H178.482L178.642 14.8671H181.973L182 29.8126H178.722L178.562 27.9343L178.509 27.9068C177.657 29.159 175.925 30.2478 173.553 30.2478C169.023 30.2494 166.145 26.6829 166.145 22.3269ZM178.535 22.3269C178.535 19.6591 176.83 17.5357 174.112 17.5357C171.501 17.5357 169.689 19.6591 169.689 22.3269C169.689 24.9947 171.501 27.1181 174.112 27.1181C176.83 27.1189 178.535 24.9947 178.535 22.3269ZM101.912 29.764C98.9013 28.7019 97.0899 25.7348 97.0899 22.2775C97.0899 17.9215 99.9939 14.3825 104.444 14.3825C106.842 14.3825 108.494 15.4171 109.4 16.5601H109.427V7.78906L109.933 7.97997C110.519 8.22507 111.079 8.47017 111.612 8.76947C112.064 9.01457 112.517 9.25967 112.944 9.55896V29.764H109.666L109.506 27.8857L109.453 27.8582C108.921 28.6202 108.068 29.328 106.948 29.764C106.229 30.0366 105.403 30.1992 104.497 30.1992C103.565 30.2 102.685 30.0366 101.912 29.764ZM109.479 22.2775C109.479 19.6097 107.774 17.4863 105.056 17.4863C102.445 17.4863 100.633 19.6097 100.633 22.2775C100.633 24.9453 102.445 27.0687 105.056 27.0687C107.774 27.0695 109.479 24.9461 109.479 22.2775Z" fill="#1C0D3F"/>
 </svg>
diff --git a/assets/scss/header.scss b/assets/scss/header.scss
index 0bd9eb9..6f6b383 100644
--- a/assets/scss/header.scss
+++ b/assets/scss/header.scss
@@ -39,6 +39,10 @@
     align-items: center;
     padding: 0 20px;
 
+    &__menu {
+        overflow-y: auto;
+    }
+
     &__first {
         top: 0;
         min-height: $header-first-nav-height;
@@ -212,6 +216,7 @@
 
 .gd-header-mobile-menu-trigger {
     margin-bottom: 0;
+    border: none;
 }
 
 .search-result-close-button {
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index 022a12f..6f225d0 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -13,7 +13,7 @@
   <body class="td-{{ .Kind }}{{ if .Page.Params.edition }} doc{{ .Page.Params.edition }}{{ end }}{{ if .Page.Params.type }} {{ .Page.Params.type }}{{ end }}" id="top">
     {{ partial "gtm-body.html" }}
     {{ partial "skip-links.html" . }}
-    <header>
+    <header aria-label="Main site header">
       {{ partial "navbar.html" . }}
     </header>
     <div class="container-fluid td-outer">
@@ -26,7 +26,7 @@
           <div class="d-none d-xl-block col-xl-2 td-toc d-print-none">
             {{ partial "toc.html" . }}
           </div>
-          <main class="col-12 col-lg-8 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content">
+          <main class="col-12 col-lg-8 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content" aria-label="Article content">
             {{ partial "version-banner.html" . }}
             {{ if not .Site.Params.ui.breadcrumb_disable }}{{ partial "breadcrumb.html" . }}{{ end }}
             {{ if .Draft }}
diff --git a/layouts/api-reference/baseof.html b/layouts/api-reference/baseof.html
index a2983ea..9f1bbb5 100644
--- a/layouts/api-reference/baseof.html
+++ b/layouts/api-reference/baseof.html
@@ -10,11 +10,11 @@
   <body class="td-{{ .Kind }}{{ if .Page.Params.edition }} doc{{ .Page.Params.edition }}{{ end }}{{ if .Page.Params.type }} {{ .Page.Params.type }}{{ end }}" id="top">
     {{ partial "gtm-body.html" }}
     {{ partial "skip-links.html" . }}
-    <header>
+    <header aria-label="Main site header">
       {{ partial "navbar.html" . }}
     </header>
     <div class="container-fluid td-default td-outer">
-      <main role="main" class="td-main" id="main-content">
+      <main role="main" class="td-main" id="main-content" aria-label="Article content">
         {{ block "main" . }}{{ end }}
       </main>
       {{ partialCached "footer.html" . }}
diff --git a/layouts/docs/baseof.html b/layouts/docs/baseof.html
index 022a12f..6f225d0 100644
--- a/layouts/docs/baseof.html
+++ b/layouts/docs/baseof.html
@@ -13,7 +13,7 @@
   <body class="td-{{ .Kind }}{{ if .Page.Params.edition }} doc{{ .Page.Params.edition }}{{ end }}{{ if .Page.Params.type }} {{ .Page.Params.type }}{{ end }}" id="top">
     {{ partial "gtm-body.html" }}
     {{ partial "skip-links.html" . }}
-    <header>
+    <header aria-label="Main site header">
       {{ partial "navbar.html" . }}
     </header>
     <div class="container-fluid td-outer">
@@ -26,7 +26,7 @@
           <div class="d-none d-xl-block col-xl-2 td-toc d-print-none">
             {{ partial "toc.html" . }}
           </div>
-          <main class="col-12 col-lg-8 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content">
+          <main class="col-12 col-lg-8 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content" aria-label="Article content">
             {{ partial "version-banner.html" . }}
             {{ if not .Site.Params.ui.breadcrumb_disable }}{{ partial "breadcrumb.html" . }}{{ end }}
             {{ if .Draft }}
diff --git a/layouts/partials/footer.html b/layouts/partials/footer.html
index a88a525..abc4e52 100644
--- a/layouts/partials/footer.html
+++ b/layouts/partials/footer.html
@@ -2,7 +2,7 @@
 {{ $footer := getJSON "https://www.gooddata.com/learn-assets/js/footer-definition.json" }}
 {{ if not .Site.Params.whitelabeled }}
 
-<footer class="gd-footer">
+<footer class="gd-footer" aria-label="Page footer">
   <a href="#top" class="skip-link skip-link--footer">Skip footer content</a>
   
   {{ if $footer.footer.bannerLinks }}
diff --git a/layouts/partials/header-menu.html b/layouts/partials/header-menu.html
index 6988874..74f1dc7 100644
--- a/layouts/partials/header-menu.html
+++ b/layouts/partials/header-menu.html
@@ -7,18 +7,18 @@
     {{ end }}
 {{ end }}
 
-<div class="gd-docs-header-nav__center gd-header">
+<nav class="gd-docs-header-nav__center gd-header" aria-label="Main">
     {{ if $mainMenu }}
-        <input type="checkbox" id="gd-header-mobile-menu-trigger-input" name="gd-header-mobile-menu-trigger-input" class="gd-header-mobile gd-header-mobile-menu-trigger-input">
-        <label for="gd-header-mobile-menu-trigger-input" class="gd-header-mobile gd-header-mobile-menu-trigger"><span></span></label>
-        <ul class="gd-docs-header-nav__menu gd-header-links">
+        <input type="checkbox" role="button" id="gd-header-mobile-menu-trigger-input" name="gd-header-mobile-menu-trigger-input" class="gd-header-mobile gd-header-mobile-menu-trigger-input" aria-label="Open navigation menu" aria-controls="gd-header-mobile-menu" aria-expanded="false">
+        <label tabindex="0" for="gd-header-mobile-menu-trigger-input" class="gd-header-mobile gd-header-mobile-menu-trigger"><span></span></label>
+        <ul id="gd-header-mobile-menu" class="gd-docs-header-nav__menu gd-header-links">
         {{ range $mainMenu }}
             <li class="gd-docs-header-nav__menuitem gd-header-link-item{{ if (isset .Params "mobileonly") }} gd-header-link-item-mobile-only{{ end }}">
-            <a href="{{ if isset .Params "isHome" }}{{ $dot.Site.Home.RelPermalink }}{{ else }}{{ .URL }}{{ end }}" class="gd-docs-header-nav__menulink gd-header-link{{ if isset .Params "ismobiletitle" }} gd-header-link__main{{ end }}{{ if isset .Params "ishome" }} gd-header-link__active{{ end }}">
-                {{ .Name }}
-            </a>
+                <a href="{{ if isset .Params "isHome" }}{{ $dot.Site.Home.RelPermalink }}{{ else }}{{ .URL }}{{ end }}" class="gd-docs-header-nav__menulink gd-header-link{{ if isset .Params "ismobiletitle" }} gd-header-link__main{{ end }}{{ if isset .Params "ishome" }} gd-header-link__active{{ end }}">
+                    {{ .Name }}
+                </a>
             </li>
         {{ end }}
         </ul>
     {{ end }}
-</div>
\ No newline at end of file
+</nav>
\ No newline at end of file
diff --git a/layouts/partials/navbar-breadcrumb.html b/layouts/partials/navbar-breadcrumb.html
index 7fff612..4462b25 100644
--- a/layouts/partials/navbar-breadcrumb.html
+++ b/layouts/partials/navbar-breadcrumb.html
@@ -1,8 +1,10 @@
 {{/* (C) 2023 GoodData Corporation */}}
 {{/* This is overriden in docs (tiger/bear) */}}
-<ul class="gd-breadcrumb">
-  <li class="gd-breadcrumb-item">
-    <a href="{{ .Site.Home.RelPermalink }}">All Products</a>
-  </li>
-  <li class="gd-breadcrumb-item">{{ .Title }}</li>
-</ul>
+<nav class="gd-docs-header-nav__left" aria-label="Breadcrumbs">
+  <ul class="gd-breadcrumb">
+    <li class="gd-breadcrumb-item">
+      <a href="{{ .Site.Home.RelPermalink }}">All Products</a>
+    </li>
+    <li class="gd-breadcrumb-item">{{ .Title }}</li>
+  </ul>
+</nav>
\ No newline at end of file
diff --git a/layouts/partials/navbar.html b/layouts/partials/navbar.html
index 6698ac3..53d0691 100644
--- a/layouts/partials/navbar.html
+++ b/layouts/partials/navbar.html
@@ -5,20 +5,18 @@
 {{ $cover := .HasShortcode "blocks/cover" }}
 
 {{ if not $whitelabeled }}
-<nav class="gd-docs-header-nav gd-docs-header-nav__first">
-  <div class="gd-docs-header-nav__left">
+<div class="gd-docs-header-nav gd-docs-header-nav__first">
+  <nav class="gd-docs-header-nav__left" aria-label="Homepage">
     <a class="gd-docs-header-nav__logo gd-header-nav__logo" href="{{ .Site.Home.RelPermalink }}" aria-label="Go to documentation homepage">
       {{ with resources.Get "icons/GoodDataLearn.svg" }}{{ ( . | minify).Content | safeHTML }}{{ end }}
     </a>
     <span class="gd-header-nav__logo-text">Learn</span>
-  </div>
+  </nav>
   {{ partial "header-menu.html" . }}
   {{ partial "header-right.html" . }}
-</nav>
-<nav class="gd-docs-header-nav gd-docs-header-nav__second">
-  <div class="gd-docs-header-nav__left">
-    {{ partial "navbar-breadcrumb.html" . }}
-  </div>
+</div>
+<div class="gd-docs-header-nav gd-docs-header-nav__second">
+  {{ partial "navbar-breadcrumb.html" . }}
   {{ if not .Params.no_search }}
   <div class="gd-docs-header-nav__center">
     {{ if eq .Page.Type "docs" }}
@@ -40,16 +38,16 @@
 
   {{ partial "edition-switch.html" . }}
   {{ partial "lang-switch.html" . }}
-</nav>
+</div>
 {{ else }}
 
-<nav class="gd-docs-header-nav gd-docs-header-nav__first whitelabeled-header__first">
+<div class="gd-docs-header-nav gd-docs-header-nav__first whitelabeled-header__first">
   <div class="gd-docs-header-nav__left"></div>
-</nav>
-<nav class="gd-docs-header-nav gd-docs-header-nav__second whitelabeled-header__second">
+</div>
+<div class="gd-docs-header-nav gd-docs-header-nav__second whitelabeled-header__second">
   <div class="gd-docs-header-nav__left"></div>
   <div class="gd-docs-header-nav__center"></div>
   <div class="gd-docs-header-nav__right"></div>
-</nav>
+</div>
 
 {{ end }}
\ No newline at end of file
diff --git a/layouts/partials/sidebar.html b/layouts/partials/sidebar.html
index fcd852a..45b92fa 100644
--- a/layouts/partials/sidebar.html
+++ b/layouts/partials/sidebar.html
@@ -3,7 +3,7 @@
   <span class="gd-docs-menu__mobile-icon" aria-hidden="true"></span>
 </button>
 <div class="gd-docs-menu__mobile-bg"></div>
-<nav id="gd-docs-menu" class="gd-docs-menu init">
+<nav id="gd-docs-menu" class="gd-docs-menu init" aria-label="Articles">
     <div class="sidebar-skip-links">
         <a href="#main-content" class="skip-link skip-link--sidebar">Skip to main content</a>
     </div>
@@ -87,7 +87,9 @@
             </li>
             
             {{ if and $page.Params.navigationLabel $page.Pages }}
-            {{ template "section-tree-nav-sections" (dict "root" $page.Pages "currentPage" $currentPage "activeSection" $activeSection "site" $site) }}
+            <li class="gd-docs-menu-page">
+                {{ template "section-tree-nav-sections" (dict "root" $page.Pages "currentPage" $currentPage "activeSection" $activeSection "site" $site) }}
+            </li>
             {{ end }}
         {{ end }}
         {{ end }}
diff --git a/layouts/swagger/baseof.html b/layouts/swagger/baseof.html
index efc3c67..2f96812 100644
--- a/layouts/swagger/baseof.html
+++ b/layouts/swagger/baseof.html
@@ -10,7 +10,7 @@
   <body class="td-{{ .Kind }}" id="top">
     {{ partial "gtm-body.html" }}
     {{ partial "skip-links.html" . }}
-    <header>
+    <header aria-label="Main site header">
       {{ partial "navbar.html" . }}
     </header>
     <div class="container-fluid td-outer">
@@ -22,7 +22,7 @@
           <div class="d-none d-xl-block col-xl-2 td-toc d-print-none">
             {{ partial "toc.html" . }}
           </div>
-          <main class="col-12 col-md-9 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content">
+          <main class="col-12 col-md-9 col-xl-7 pl-lg-5 ps-lg-5" role="main" id="main-content" aria-label="Article content">
             {{ if not .Site.Params.ui.breadcrumb_disable }}{{ partial "breadcrumb.html" . }}{{ end }}
             <script src="/js/swagger-ui-bundle.js"></script>
             <script src="/js/swagger-ui-standalone-preset.js"></script>
diff --git a/static/js/menu.js b/static/js/menu.js
index 33417b6..056bf61 100644
--- a/static/js/menu.js
+++ b/static/js/menu.js
@@ -1,6 +1,7 @@
 // (C) 2023 GoodData Corporation
 
 $(document).ready(function () {
+    // Side menu
     var menu = $(".gd-docs-menu"),
         menuActive = $(".gd-docs-menu-page.active");
 
@@ -36,4 +37,54 @@ $(document).ready(function () {
         
         $button.attr("aria-expanded", !isExpanded);
     });
+    // Mobile header menu
+    var $mobileMenuTrigger = $("#gd-header-mobile-menu-trigger-input");
+    var $mobileMenuLabel = $("label[for='gd-header-mobile-menu-trigger-input']");
+    var scrollPosition = 0; // Store scroll position
+
+    // Function to toggle menu state
+    function toggleMobileMenu() {
+        var isChecked = $mobileMenuTrigger.is(":checked");
+        
+        // Update aria-expanded for accessibility
+        $mobileMenuTrigger.attr("aria-expanded", isChecked);
+        
+        // Prevent body scrolling when menu is open
+        if (isChecked) {
+            // Save current scroll position
+            scrollPosition = window.pageYOffset || document.documentElement.scrollTop;
+            
+            // Menu is open - disable body scroll and maintain position
+            $("body").css({
+                "overflow": "hidden",
+                "position": "fixed",
+                "top": -scrollPosition + "px",
+                "width": "100%"
+            });
+            $mobileMenuTrigger.attr("aria-label", "Close navigation menu");
+        } else {
+            // Menu is closed - enable body scroll and restore position
+            $("body").css({
+                "overflow": "",
+                "position": "",
+                "top": "",
+                "width": ""
+            });
+            $mobileMenuTrigger.attr("aria-label", "Open navigation menu");
+            // Restore scroll position
+            window.scrollTo(0, scrollPosition);
+        }
+    }
+
+    $mobileMenuTrigger.on("change", toggleMobileMenu);
+    $mobileMenuLabel.on("keydown", function(e) {
+        if (e.key === "Enter") {
+            e.preventDefault();
+            $mobileMenuTrigger.prop("checked", !$mobileMenuTrigger.prop("checked"));
+            $mobileMenuTrigger.trigger("change");
+        }
+    });
+    // TOC menu
+    var $tocMenu = $("#TableOfContents");
+    $tocMenu.attr("aria-label", "Table of contents");
 });
\ No newline at end of file