diff --git a/dist/qt_themes/default/style.qss b/dist/qt_themes/default/style.qss
index ba85fe087..c3db81f4e 100644
--- a/dist/qt_themes/default/style.qss
+++ b/dist/qt_themes/default/style.qss
@@ -712,6 +712,11 @@ QMenu::item:selected {
     color: palette(highlighted-text);
 }
 
+QMenu::item:disabled {
+    color: palette(disabled, text); /* Use the system's disabled text color */
+    background-color: transparent;
+}
+
 QMenu::separator {
     height: 1px;
     background-color: palette(midlight);
diff --git a/dist/qt_themes/default_dark/style.qss b/dist/qt_themes/default_dark/style.qss
index ca6daa2d5..8135a4ba4 100644
--- a/dist/qt_themes/default_dark/style.qss
+++ b/dist/qt_themes/default_dark/style.qss
@@ -1,5 +1,6 @@
 /*
 * SPDX-FileCopyrightText: 2018 yuzu Emulator Project
+* SPDX-FileCopyrightText: 2025 citron Emulator Project
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
 QAbstractSpinBox {
@@ -685,3 +686,58 @@ QDialog#QtSoftwareKeyboardDialog QPushButton#button_space:disabled,
 QDialog#QtSoftwareKeyboardDialog QPushButton#button_space_shift:disabled {
     image: url(:/overlay/osk_button_Y_disabled.png);
 }
+
+QMenuBar {
+    background-color: #2b2b2b;
+    color: #d0d0d0;
+    border-bottom: 1px solid #3d3d3d;
+}
+
+QMenuBar::item {
+    background-color: transparent;
+    padding: 4px 10px;
+    color: #d0d0d0;
+}
+
+QMenuBar::item:selected {
+    background-color: #4a4a4a;
+    color: #ffffff;
+}
+
+QMenuBar::item:pressed {
+    background-color: #5d5d5d;
+    border-bottom: 1px solid #5d5d5d;
+    color: #ffffff;
+}
+
+/*
+ * Dropdown Menu Styling
+ */
+
+QMenu {
+    background-color: #2b2b2b;
+    color: #d0d0d0;
+    border: 1px solid #4a4a4a;
+    padding: 5px;
+}
+
+QMenu::item {
+    padding: 5px 25px;
+    border: 1px solid transparent;
+}
+
+QMenu::item:selected {
+    background-color: #4a9eff;
+    color: #ffffff;
+}
+
+QMenu::item:disabled {
+    color: #787878; /* A standard, noticeable grey for disabled text */
+    background-color: transparent; /* Prevent hover effects */
+}
+
+QMenu::separator {
+    height: 1px;
+    background-color: #4a4a4a;
+    margin: 4px;
+}
diff --git a/src/citron/main.cpp b/src/citron/main.cpp
index f24888c47..4f0ea67c3 100644
--- a/src/citron/main.cpp
+++ b/src/citron/main.cpp
@@ -5754,38 +5754,45 @@ static void AdjustLinkColor() {
 }
 
 void GMainWindow::UpdateUITheme() {
-    const QString default_theme = QString::fromUtf8(
-        UISettings::themes[static_cast<size_t>(UISettings::default_theme)].second);
     QString current_theme = QString::fromStdString(UISettings::values.theme);
+    const QString default_theme_name = QString::fromUtf8(
+        UISettings::themes[static_cast<size_t>(UISettings::default_theme)].second);
 
     if (current_theme.isEmpty()) {
-        current_theme = default_theme;
+        current_theme = default_theme_name;
     }
 
 #ifdef _WIN32
     QIcon::setThemeName(current_theme);
     AdjustLinkColor();
 #else
-    if (current_theme == QStringLiteral("default") || current_theme == QStringLiteral("colorful")) {
-        QIcon::setThemeName(current_theme == QStringLiteral("colorful") ? current_theme
-                                                                        : startup_icon_theme);
+    bool is_adaptive_theme = (current_theme == QStringLiteral("default") || current_theme == QStringLiteral("colorful"));
+
+    if (is_adaptive_theme) {
+        // For adaptive themes, check the OS state and load the appropriate stylesheet.
+        QIcon::setThemeName(current_theme == QStringLiteral("colorful") ? current_theme : startup_icon_theme);
         QIcon::setThemeSearchPaths(QStringList(default_theme_paths));
         if (CheckDarkMode()) {
-            current_theme = QStringLiteral("default_dark");
+            // If OS is dark, use the dark variant of the adaptive theme.
+            current_theme.append(QStringLiteral("_dark"));
         }
     } else {
+        // For explicit themes, use the dedicated icon sets.
         QIcon::setThemeName(current_theme);
         QIcon::setThemeSearchPaths(QStringList(QStringLiteral(":/icons")));
         AdjustLinkColor();
     }
+
 #endif
-    if (current_theme != default_theme) {
+
+    // The rest of the function remains the same, loading the resolved theme name.
+    if (current_theme != default_theme_name) {
         QString theme_uri{QStringLiteral(":%1/style.qss").arg(current_theme)};
         QFile f(theme_uri);
         if (!f.open(QFile::ReadOnly | QFile::Text)) {
             LOG_ERROR(Frontend, "Unable to open style \"{}\", fallback to the default theme",
                       UISettings::values.theme);
-            current_theme = default_theme;
+            current_theme = default_theme_name;
         }
     }
 
@@ -5794,17 +5801,13 @@ void GMainWindow::UpdateUITheme() {
     if (f.open(QFile::ReadOnly | QFile::Text)) {
         QTextStream ts(&f);
         qApp->setStyleSheet(ts.readAll());
-        setStyleSheet(ts.readAll());
     } else {
         LOG_ERROR(Frontend, "Unable to set style \"{}\", stylesheet file not found",
                   UISettings::values.theme);
         qApp->setStyleSheet({});
-        setStyleSheet({});
-
     }
 
     emit themeChanged();
-
 }
 
 void GMainWindow::LoadTranslation() {