diff --git a/data/KeyboardIcon.css b/data/KeyboardIcon.css
index 83f8679..dd9a0c3 100644
--- a/data/KeyboardIcon.css
+++ b/data/KeyboardIcon.css
@@ -1,36 +1,39 @@
 /*
-* Copyright 2019 elementary, Inc. (https://elementary.io)
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public
-* License as published by the Free Software Foundation; either
-* version 2 of the License, or (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-* General Public License for more details.
-*
-*  You should have received a copy of the GNU General Public License
-*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
+ * Copyright 2019-2026 elementary, Inc. (https://elementary.io)
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 
 .keyboard-icon {
-    background-color: #fff;
-    border-radius: 2px;
-    box-shadow:
-        0 0 2px alpha (#000, 0.3),
-        0 1px 2px alpha (#000, 0.6);
-    color: #333;
+    background-color: color-mix(in srgb, black 65%, transparent);
+    color: white;
+    border-radius: 0.3rem;
     font-weight: 600;
-    padding: 0 3px;
     text-shadow: none;
+
 }
 
-.panel.color-light .keyboard-icon {
-    background-color: alpha (#000, 0.65);
+panel.color-light .keyboard-icon {
+    box-shadow:
+        0 0 2px color-mix(in srgb, white 30%, transparent),
+        0 1px 0 color-mix(in srgb, white 25%, transparent);
+}
+
+panel.color-dark .keyboard-icon,
+panel.maximized .keyboard-icon {
+    background-color: white;
+    color: #333;
     box-shadow:
-        0 0 2px alpha (#fff, 0.3),
-        0 1px 0 alpha (#fff, 0.25);
-    color: #fff;
+        0 0 2px color-mix(in srgb, black 30%, transparent),
+        0 1px 2px color-mix(in srgb, black 60%, transparent);
+}
+
+
+panel.translucent.color-dark .keyboard-icon {
+    box-shadow:
+        0 0 2px color-mix(in srgb, black 15%, transparent),
+        0 1px 2px color-mix(in srgb, black 30%, transparent);
+}
+
+panel.translucent.color-light .keyboard-icon {
+    box-shadow: none;
 }
diff --git a/meson.build b/meson.build
index d574c05..20cd1cf 100644
--- a/meson.build
+++ b/meson.build
@@ -54,7 +54,7 @@ shared_module(
         dependency('glib-2.0'),
         dependency('gobject-2.0'),
         dependency('granite-7', version: '>= 7.6.0'),
-        dependency('gtk4'),
+        dependency('gtk4', version: '>= 4.20'),
         dependency('libxml-2.0'),
         wingpanel_dep,
         ibus_dep,