[gnome-calculator/wip/exalm/fix-style: 6/7] style: Redo the new style

[Alexander Mikhaylenko <alexm src gnome org>]

commit 28ea502db2c4cf50d9867397e6e5b2648985df21
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri May 6 17:08:15 2022 +0400

    style: Redo the new style
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-calculator/-/issues/272

 src/ui/style-dark.css |  3 +++
 src/ui/style.css      | 13 +++++++++++++
 2 files changed, 16 insertions(+)
---
diff --git a/src/ui/style-dark.css b/src/ui/style-dark.css
index 95d20e96..bf1fe7f3 100644
--- a/src/ui/style-dark.css
+++ b/src/ui/style-dark.css
@@ -1,3 +1,6 @@
+@define-color accent_color @orange_1;
+@define-color accent_bg_color @orange_4;
+
 .history-view {
   background-color: alpha(white, .05);
 }
diff --git a/src/ui/style.css b/src/ui/style.css
index 5fd079e5..80c9ef7a 100644
--- a/src/ui/style.css
+++ b/src/ui/style.css
@@ -1,3 +1,6 @@
+@define-color accent_color @orange_5;
+@define-color accent_bg_color @orange_3;
+
 .sourceview {
   padding: 0px 12px;
   padding-bottom: 8px;
@@ -108,6 +111,16 @@ clamp > .small .bit-panel button {
 .math-buttons .number-button {
   font-size: 1.2em;
   font-weight: bolder;
+  background-color: alpha(currentColor, .2);
+}
+
+.math-buttons .number-button:hover {
+  background-color: alpha(currentColor, .25);
+}
+
+.math-buttons .number-button:hover:active,
+.math-buttons .number-button.keyboard-activating {
+  background-color: alpha(currentColor, .35);
 }
 
 .math-buttons .operator-button, .procent-button, .numeric-point-button, .parenthesis-button, 
.function-button {