diff --git a/Dockerfile.mug b/Dockerfile.mug
index 5043043..c0effb5 100644
--- a/Dockerfile.mug
+++ b/Dockerfile.mug
@@ -16,6 +16,7 @@ COPY ./templates ${INVENIO_INSTANCE_PATH}/templates/
 
 # Replace variables.less
 COPY themes/MUG/variables.less /opt/env/lib/python3.12/site-packages/invenio_override/assets/semantic-ui/less/invenio_override/variables.less
+COPY themes/MUG/overrides.less /opt/env/lib/python3.12/site-packages/invenio_override/assets/semantic-ui/less/invenio_override/overrides.less
 
 RUN invenio collect --verbose && invenio webpack create
 
diff --git a/themes/MUG/overrides.less b/themes/MUG/overrides.less
new file mode 100644
index 0000000..075c93f
--- /dev/null
+++ b/themes/MUG/overrides.less
@@ -0,0 +1,227 @@
+/*
+ *   Copyright (C) 2020-2023 Graz University of Technology.
+ *   Copyright (C) 2024 Shared RDM.
+ *
+ * invenio-override is free software; you can redistribute it and/or modify it
+ * under the terms of the MIT License; see LICENSE file for more details.
+ */
+
+/*
+section backgrounds and text colors
+login background color
+login & signup page title
+ */
+.section-content-light-bg {
+  background-color: @primaryBackground;
+}
+.section-title {
+  color: @primaryText;
+}
+.cover-page {
+  background-color: @primaryBackground;
+}
+.panel-free-title {
+  color: @primaryText;
+}
+
+/* global font styling */
+*,
+html,
+body,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+pre,
+.ui.button,
+.ui.items,
+.ui.accordion .title:not(.ui),
+.ui.items > .item > .content > .header,
+.ui.modal > .header,
+.ui.menu,
+.ui.header,
+.ui.form input[type],
+.ui.form input[type]:focus {
+  font-family: "Source Sans Pro";
+}
+
+pre {
+  font-size: 14px;
+}
+
+/* button backgrounds */
+.ui.search.button {
+  background-color: @overridePrimary;
+}
+
+/* accordion styling */
+.ui.accordion.styled {
+  .title,
+  .title.active {
+    background-color: @greyLight;
+    color: rgba(0, 0, 0, 0.6);
+  }
+}
+
+/* hover effects */
+.ui.search.button:hover {
+  background-color: @overrideSecondary;
+  color: #ffffff;
+}
+
+/* border radius reset */
+.label-keyword,
+.ui.label,
+.ui.button,
+.ui.rdm-sidebar,
+.ui.menu,
+.ui.input > input,
+.ui.segment,
+.ui.selection.dropdown,
+.ui.accordion.styled,
+.ui.card,
+.ui.cards > .card,
+.ui.basic.button,
+.ui.basic.buttons .button,
+.ui.action.input:not([class*="left action"]) > .button:last-child,
+.ui.action.input:not([class*="left action"]) > .buttons:last-child > .button,
+.ui.action.input:not([class*="left action"]) > .dropdown:last-child,
+.ui.form input[type],
+.ui.form input[type]:focus {
+  border-radius: 0;
+}
+
+/* Global input focus color override - MUG green instead of default blue */
+.ui.input > input:focus,
+.ui.form input[type]:focus {
+  border-color: @mugSearch !important;
+}
+
+.ui.input > input:hover {
+  border-color: @mugSearch !important;
+}
+
+/* sidebar styling */
+.ui.rdm-sidebar {
+  background-color: unset;
+  box-shadow: unset;
+}
+
+.ui.label {
+  font-weight: 400;
+}
+
+/* access badge colors */
+.ui.label.access-status {
+  &.open {
+    background-color: @accessRightOpen;
+  }
+  &.embargoed {
+    background-color: @accessRightEmbargoed;
+  }
+  &.metadata-only {
+    background-color: @accessRightMetadata;
+  }
+}
+
+/* font face definitions */
+@font-face {
+  font-family: "Source Sans Pro";
+  src: url("./fonts/SourceSansPro/SourceSansPro-Regular.ttf") format("truetype");
+  font-weight: 400;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: "Source Sans Pro";
+  src: url("./fonts/SourceSansPro/SourceSansPro-Italic.ttf") format("truetype");
+  font-weight: 400;
+  font-style: italic;
+}
+
+#alert-content {
+  display: block !important;
+}
+
+/* UI messages */
+.ui.success.message {
+  background-color: #f8ffff;
+  color: #0e576c;
+}
+.ui.info.message {
+  background-color: #f8ffff;
+  color: #0e576c;
+}
+
+/* accordion field titles */
+.ui.accordion.invenio-accordion-field .title {
+  background-color: @overridePrimary;
+  color: @ocerridePlabels !important;
+}
+
+/* button styling */
+.ui.positive.buttons .button,
+.ui.positive.button {
+  background-color: @overridePrimaryBt;
+  color: @greyDark;
+}
+
+.ui.positive.buttons .button:hover,
+.ui.positive.button:hover {
+  background-color: @hoverOverridePrimaryBt;
+  color: @greyDark;
+}
+
+.ui.primary.buttons .button,
+.ui.primary.button {
+  background-color: @overridePrimary;
+  color: @ocerridePlabels !important;
+  text-shadow: none;
+}
+
+.ui.primary.buttons .button:hover,
+.ui.primary.button:hover {
+  background-color: @overrideSecondary;
+  color: #ffffff;
+  text-shadow: none;
+}
+
+.ui.primary.buttons .button:active,
+.ui.primary.button:active,
+.ui.primary.buttons .button:focus,
+.ui.primary.button:focus {
+  background-color: @overrideSecondary;
+  color: #ffffff;
+  text-shadow: none;
+}
+
+/* brand and label */
+.ui.menu .brand.active.item,
+.ui.brand.menu .active.item {
+  border-color: @overridePrimary !important;
+  background-color: @overridePrimary;
+  color: #ffffff !important;
+}
+
+.ui.primary.label {
+  background-color: @overridePrimary;
+  border-color: @overridePrimary;
+  color: @ocerridePlabels;
+}
+
+#skip-to-main {
+  display: none !important;
+}
+
+.right-card {
+  background-color: #fff;
+  border-radius: 8px;
+  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+  padding: 20px;
+}
+
+.menus {
+  font-size: 16.8px;
+}
diff --git a/themes/MUG/variables.less b/themes/MUG/variables.less
index fbc3aa5..f2fa7da 100644
--- a/themes/MUG/variables.less
+++ b/themes/MUG/variables.less
@@ -1,76 +1,89 @@
 /*
- *   copyright (c) 2020-2023 graz university of technology.
- *   copyright (c) 2024 shared rdm.
+ *   Copyright (C) 2020-2025 Graz University of Technology.
  *
  * invenio-override is free software; you can redistribute it and/or modify it
- * under the terms of the mit license; see license file for more details.
+ * under the terms of the MIT License; see LICENSE file for more details.
+ *
  */
 
-/* badge colors, accessibility */
-@accessRight             : #e9711c;
+/* ======================================
+   Default Colors
+====================================== */
+
+/* Accessibility-related badge colors */
+@accessRight             : @overridePrimary;
 @accessRightOpen         : @accessRight;
-@accessRightRestricted   : #ff7f45;
-@accessRightEmbargoed    : #db2828;
+@accessRightRestricted   : #db2828;
+@accessRightEmbargoed    : #fbbd08;
 @accessRightClosed       : @accessRightEmbargoed;
-@accessRightMetadata     : #ff7f45;
+@accessRightMetadata     : #5e5e5e;
 
-/* primary colors */
+/* Primary colors */
 @overridePrimary         : #007934;
 @overrideSecondary       : #34b233;
 @ocerridePlabels         : #ffffff;
-@overridePrimaryBt       : #dbdce0; /* override primary button - e.g. create community */
+@overridePrimaryBt       : #dbdce0;
+@hoverOverridePrimaryBt  : #bfc0c2;
 
-/* general */
-@primaryBackground       : #fff;
-@primaryText             : #000;
+/* General colors */
+@primaryBackground       : #ffffff;
+@primaryText             : #000000;
 
-/* mug palette */
+/* Accent colors */
+@greyDark                : #393b41;
+@greyLight               : #e0e1e2;
+@labelKeywordBackground  : #e8e8e8;
+
+/* MUG-specific palette */
 @mugSearch               : @overridePrimary;
 @outlineRecord           : @accessRightMetadata;
 @recordText              : #6b6d74;
-@hoverOverridePrimaryBt  : #bfc0c2;
 @recordLightText         : #94959a;
 
-/* accent colors */
-@greyDark                : #393b41;
-@greyLight               : #e0e1e2;
-@labelKeywordBackground  : #e8e8e8;
+/* ======================================
+   UI-specific Colors
+====================================== */
 
-/* ui message colors */
+/* Message styling */
 @uiMsgBc                 : #fcfff5;
 @uiMsgGc                 : @overridePrimary;
 
-/* link and button colors */
-@primaryLinkInverted           : @primaryText;
-@primaryLinkBackgroundInverted : @primaryBackground;
+/* Link and button colors */
 @primaryLink                   : @primaryBackground;
 @primaryLinkHoverBackground    : @primaryText;
+@primaryLinkInverted           : @primaryText;
+@primaryLinkBackgroundInverted : @primaryBackground;
 @primaryButton                 : @primaryBackground;
 @primaryButtonHoverBackground  : @primaryText;
 @primaryButtonInverted         : @primaryText;
 
-/* account-specific (signin, signup) */
+/* Account-specific styling (signin, signup) */
 @primaryFormAccounts           : @primaryBackground;
 @formAccountsInputPlaceholder  : silver;
-@fieldInputSelectionBackground : #a7dabc;
+@fieldInputSelectionBackground : #50A2CE;
 @signInBackground              : #6b6d74;
 
-/* footer specific */
+/* Footer-specific styling */
 @footerGrey                    : #5e5e5e;
 @footerBottomBackground        : #f2f2f2;
 
-/* record specific */
+/* Record-specific styling */
 @recordVersionBackground       : #f2f2f2;
 @randomRecordsFrontpageArticle : rgba(34, 36, 38, 0.15);
 
-/* input styling */
-@outlineColor                  : #a7dabc;
+/* ======================================
+   Input and Notification Styling
+====================================== */
 
-/* notification styling */
+@outlineColor                  : #85B7D9;
 @notificationBackground        : #fffaf3;
 @notificationBorder            : #e2d5c2;
 
-/* home stroke */
+/* ======================================
+   Specific Component Styling
+====================================== */
+
+/* Home stroke SVG styling */
 .home-stroke polyline {
   stroke: @overridePrimary;
   stroke-linecap: square;
@@ -78,7 +91,11 @@
   fill: none;
 }
 
-/* hyperlink hover color */
+/* ======================================
+   Hyperlink Styling
+====================================== */
+
+/* Hyperlink hover and focus */
 a:focus,
 a:hover {
   color: @recordText;