Rework button coloring, add focus and active colors (#24507)

We were missing overrides for `:focus` and `:active` styles which I've
added here along with two new color variants `dark-1` and `dark-2` for
them. Fomantic UI has 4 different colors but I think 3 are sufficient. I
also changed it on arc-green so button goes darker when pressed.

<img width="129" alt="Screenshot 2023-05-04 at 01 21 43"
src="https://user-images.githubusercontent.com/115237/236072060-7389276a-275b-4d3e-aa52-20b37c6e6d92.png">
<img width="130" alt="Screenshot 2023-05-04 at 01 17 59"
src="https://user-images.githubusercontent.com/115237/236071818-0e46414a-33db-4bb2-a3bd-35b514a8a2d0.png">
<img width="129" alt="Screenshot 2023-05-04 at 01 18 07"
src="https://user-images.githubusercontent.com/115237/236071819-562b1e38-541f-432b-b3b6-48e6d7594d00.png">
<img width="131" alt="Screenshot 2023-05-04 at 01 18 13"
src="https://user-images.githubusercontent.com/115237/236071820-89b7dba9-ce6c-48e5-a075-9053063e6ad3.png">
<img width="133" alt="Screenshot 2023-05-04 at 01 18 30"
src="https://user-images.githubusercontent.com/115237/236071823-b6fe2df4-b3f0-4dc8-97a8-f90ba6d19bec.png">
<img width="133" alt="Screenshot 2023-05-04 at 01 18 40"
src="https://user-images.githubusercontent.com/115237/236071824-b02ce61a-2367-4c29-8a25-45f231f5e5ee.png">

One misc change includes some fixes to editor and slightly darker
selection.

<img width="1245" alt="Screenshot 2023-05-28 at 19 16 19"
src="https://github.com/go-gitea/gitea/assets/115237/1ea4a4b6-26ba-45af-9cbc-5b8c476c2338">

6 files changed, 899 insertions, 493 deletions

diff --git a/web_src/css/base.css b/web_src/css/base.css
index ef0193e13c..204a9f0ce9 100644
--- a/web_src/css/base.css
+++ b/web_src/css/base.css
@@ -43,6 +43,8 @@
   --color-primary-alpha-70: #4183c4b3;
   --color-primary-alpha-80: #4183c4cc;
   --color-primary-alpha-90: #4183c4e1;
+  --color-primary-hover: var(--color-primary-dark-1);
+  --color-primary-active: var(--color-primary-dark-2);
   --color-secondary: #dedede;
   --color-secondary-dark-1: #cecece;
   --color-secondary-dark-2: #bfbfbf;
@@ -70,6 +72,8 @@
   --color-secondary-alpha-70: #dededeb3;
   --color-secondary-alpha-80: #dededecc;
   --color-secondary-alpha-90: #dededee1;
+  --color-secondary-hover: var(--color-secondary-dark-1);
+  --color-secondary-active: var(--color-secondary-dark-2);
   /* console colors */
   --color-console-fg: #ffffff;
   --color-console-bg: #252a2f;
@@ -102,6 +106,32 @@
   --color-pink-light: #e86bb1;
   --color-brown-light: #c58b66;
   --color-black-light: #525558;
+  /* dark 1 variants - produced via Sass scale-color(color, $lightness: -10%) */
+  --color-red-dark-1: #c82121;
+  --color-orange-dark-1: #e6630d;
+  --color-yellow-dark-1: #e5ac04;
+  --color-olive-dark-1: #a3b816;
+  --color-green-dark-1: #1ea73e;
+  --color-teal-dark-1: #00a39c;
+  --color-blue-dark-1: #1e78bb;
+  --color-violet-dark-1: #5a30b5;
+  --color-purple-dark-1: #932eb4;
+  --color-pink-dark-1: #db228a;
+  --color-brown-dark-1: #955d39;
+  --color-black-dark-1: #18191a;
+  /* dark 2 variants - produced via Sass scale-color(color, $lightness: -20%) */
+  --color-red-dark-2: #b11e1e;
+  --color-orange-dark-2: #cc580c;
+  --color-yellow-dark-2: #cc9903;
+  --color-olive-dark-2: #91a313;
+  --color-green-dark-2: #1a9537;
+  --color-teal-dark-2: #00918a;
+  --color-blue-dark-2: #1a6aa6;
+  --color-violet-dark-2: #502aa1;
+  --color-purple-dark-2: #8229a0;
+  --color-pink-dark-2: #c21e7b;
+  --color-brown-dark-2: #845232;
+  --color-black-dark-2: #161617;
   /* other colors */
   --color-grey: #707070;
   --color-grey-light: #838383;
@@ -394,338 +424,6 @@ a.label,
   text-decoration: none !important;
 }
 
-.ui.red.labels .label,
-.ui.ui.ui.red.label,
-.ui.red.button,
-.ui.red.buttons .button {
-  background: var(--color-red);
-}
-
-.ui.red.button:hover,
-.ui.red.buttons .button:hover {
-  background: var(--color-red-light);
-}
-
-.ui.basic.red.buttons .button,
-.ui.basic.red.button {
-  color: var(--color-red);
-  border-color: var(--color-red);
-}
-
-.ui.basic.red.buttons .button:hover,
-.ui.basic.red.button:hover {
-  color: var(--color-red-light);
-  border-color: var(--color-red-light);
-}
-
-.ui.orange.labels .label,
-.ui.ui.ui.orange.label,
-.ui.orange.button,
-.ui.orange.buttons .button {
-  background: var(--color-orange);
-}
-
-.ui.orange.button:hover,
-.ui.orange.buttons .button:hover {
-  background: var(--color-orange-light);
-}
-
-.ui.basic.orange.buttons .button,
-.ui.basic.orange.button {
-  color: var(--color-orange);
-  border-color: var(--color-orange);
-}
-
-.ui.basic.orange.buttons .button:hover,
-.ui.basic.orange.button:hover {
-  color: var(--color-orange-light);
-  border-color: var(--color-orange-light);
-}
-
-.ui.yellow.labels .label,
-.ui.ui.ui.yellow.label,
-.ui.yellow.button,
-.ui.yellow.buttons .button {
-  background: var(--color-yellow);
-}
-
-.ui.yellow.button:hover,
-.ui.yellow.buttons .button:hover {
-  background: var(--color-yellow-light);
-}
-
-.ui.basic.yellow.buttons .button,
-.ui.basic.yellow.button {
-  color: var(--color-yellow);
-  border-color: var(--color-yellow);
-}
-
-.ui.basic.yellow.buttons .button:hover,
-.ui.basic.yellow.button:hover {
-  color: var(--color-yellow-light);
-  border-color: var(--color-yellow-light);
-}
-
-.ui.olive.labels .label,
-.ui.ui.ui.olive.label,
-.ui.olive.button,
-.ui.olive.buttons .button {
-  background: var(--color-olive);
-}
-
-.ui.olive.button:hover,
-.ui.olive.buttons .button:hover {
-  background: var(--color-olive-light);
-}
-
-.ui.basic.olive.buttons .button,
-.ui.basic.olive.button {
-  color: var(--color-olive);
-  border-color: var(--color-olive);
-}
-
-.ui.basic.olive.buttons .button:hover,
-.ui.basic.olive.button:hover {
-  color: var(--color-olive-light);
-  border-color: var(--color-olive-light);
-}
-
-.ui.green.labels .label,
-.ui.ui.ui.green.label,
-.ui.green.button,
-.ui.green.buttons .button {
-  background: var(--color-green);
-}
-
-.ui.green.button:hover,
-.ui.green.buttons .button:hover {
-  background: var(--color-green-light);
-}
-
-.ui.basic.green.buttons .button,
-.ui.basic.green.button {
-  color: var(--color-green);
-  border-color: var(--color-green);
-}
-
-.ui.basic.green.buttons .button:hover,
-.ui.basic.green.button:hover {
-  color: var(--color-green-light);
-  border-color: var(--color-green-light);
-}
-
-.ui.teal.labels .label,
-.ui.ui.ui.teal.label,
-.ui.teal.button,
-.ui.teal.buttons .button {
-  background: var(--color-teal);
-}
-
-.ui.teal.button:hover,
-.ui.teal.buttons .button:hover {
-  background: var(--color-teal-light);
-}
-
-.ui.basic.teal.buttons .button,
-.ui.basic.teal.button {
-  color: var(--color-teal);
-  border-color: var(--color-teal);
-}
-
-.ui.basic.teal.buttons .button:hover,
-.ui.basic.teal.button:hover {
-  color: var(--color-teal-light);
-  border-color: var(--color-teal-light);
-}
-
-.ui.blue.labels .label,
-.ui.ui.ui.blue.label,
-.ui.blue.button,
-.ui.blue.buttons .button {
-  background: var(--color-blue);
-}
-
-.ui.blue.button:hover,
-.ui.blue.buttons .button:hover {
-  background: var(--color-blue-light);
-}
-
-.ui.basic.blue.buttons .button,
-.ui.basic.blue.button {
-  color: var(--color-blue);
-  border-color: var(--color-blue);
-}
-
-.ui.basic.blue.buttons .button:hover,
-.ui.basic.blue.button:hover {
-  color: var(--color-blue-light);
-  border-color: var(--color-blue-light);
-}
-
-.ui.violet.labels .label,
-.ui.ui.ui.violet.label,
-.ui.violet.button,
-.ui.violet.buttons .button {
-  background: var(--color-violet);
-}
-
-.ui.violet.button:hover,
-.ui.violet.buttons .button:hover {
-  background: var(--color-violet-light);
-}
-
-.ui.basic.violet.buttons .button,
-.ui.basic.violet.button {
-  color: var(--color-violet);
-  border-color: var(--color-violet);
-}
-
-.ui.basic.violet.buttons .button:hover,
-.ui.basic.violet.button:hover {
-  color: var(--color-violet-light);
-  border-color: var(--color-violet-light);
-}
-
-.ui.purple.labels .label,
-.ui.ui.ui.purple.label,
-.ui.purple.button,
-.ui.purple.buttons .button {
-  background: var(--color-purple);
-}
-
-.ui.purple.button:hover,
-.ui.purple.buttons .button:hover {
-  background: var(--color-purple-light);
-}
-
-.ui.basic.purple.buttons .button,
-.ui.basic.purple.button {
-  color: var(--color-purple);
-  border-color: var(--color-purple);
-}
-
-.ui.basic.purple.buttons .button:hover,
-.ui.basic.purple.button:hover {
-  color: var(--color-purple-light);
-  border-color: var(--color-purple-light);
-}
-
-.ui.pink.labels .label,
-.ui.ui.ui.pink.label,
-.ui.pink.button,
-.ui.pink.buttons .button {
-  background: var(--color-pink);
-}
-
-.ui.pink.button:hover,
-.ui.pink.buttons .button:hover {
-  background: var(--color-pink-light);
-}
-
-.ui.basic.pink.buttons .button,
-.ui.basic.pink.button {
-  color: var(--color-pink);
-  border-color: var(--color-pink);
-}
-
-.ui.basic.pink.buttons .button:hover,
-.ui.basic.pink.button:hover {
-  color: var(--color-pink-light);
-  border-color: var(--color-pink-light);
-}
-
-.ui.brown.labels .label,
-.ui.ui.ui.brown.label,
-.ui.brown.button,
-.ui.brown.buttons .button {
-  background: var(--color-brown);
-}
-
-.ui.brown.button:hover,
-.ui.brown.buttons .button:hover {
-  background: var(--color-brown-light);
-}
-
-.ui.basic.brown.buttons .button,
-.ui.basic.brown.button {
-  color: var(--color-brown);
-  border-color: var(--color-brown);
-}
-
-.ui.basic.brown.buttons .button:hover,
-.ui.basic.brown.button:hover {
-  color: var(--color-brown-light);
-  border-color: var(--color-brown-light);
-}
-
-.ui.grey.labels .label,
-.ui.ui.ui.grey.label,
-.ui.grey.button,
-.ui.grey.buttons .button {
-  background: var(--color-grey);
-}
-
-.ui.grey.button:hover,
-.ui.grey.buttons .button:hover {
-  background: var(--color-grey-light);
-}
-
-.ui.basic.grey.buttons .button,
-.ui.basic.grey.button {
-  color: var(--color-grey);
-  border-color: var(--color-grey);
-}
-
-.ui.basic.grey.buttons .button:hover,
-.ui.basic.grey.button:hover {
-  color: var(--color-grey-light);
-  border-color: var(--color-grey-light);
-}
-
-.ui.black.labels .label,
-.ui.ui.ui.black.label,
-.ui.black.button,
-.ui.black.buttons .button {
-  background: var(--color-black);
-}
-
-.ui.black.button:hover,
-.ui.black.buttons .button:hover {
-  background: var(--color-black-light);
-}
-
-.ui.basic.black.buttons .button,
-.ui.basic.black.button {
-  color: var(--color-black);
-  border-color: var(--color-black);
-}
-
-.ui.basic.black.buttons .button:hover,
-.ui.basic.black.button:hover {
-  color: var(--color-black-light);
-  border-color: var(--color-black-light);
-}
-
-.ui.negative.buttons .button,
-.ui.negative.button {
-  background: var(--color-red);
-}
-
-.ui.negative.buttons .button:hover,
-.ui.negative.button:hover {
-  background: var(--color-red-light);
-}
-
-.ui.positive.buttons .button,
-.ui.positive.button {
-  background: var(--color-green);
-}
-
-.ui.positive.buttons .button:hover,
-.ui.positive.button:hover {
-  background: var(--color-green-light);
-}
-
 .ui.search > .results {
   background: var(--color-body);
   border-color: var(--color-secondary);
@@ -2192,152 +1890,6 @@ a.ui.active.label:hover {
   font-size: 0.85714286rem;
 }
 
-.ui.button {
-  background: var(--color-button);
-  border: 1px solid var(--color-light-border);
-  color: var(--color-text);
-}
-
-.page-content .ui.button {
-  box-shadow: none !important;
-}
-
-.ui.button:focus,
-.ui.button:hover {
-  background: var(--color-hover);
-  color: var(--color-text);
-}
-
-.ui.active.button,
-.ui.button:active,
-.ui.active.button:active,
-.ui.active.button:hover {
-  background: var(--color-active);
-  color: var(--color-text);
-}
-
-.ui.button.no-text .icon {
-  margin: 0 !important;
-}
-
-.ui.buttons .button:first-child {
-  border-left: 1px solid var(--color-light-border);
-}
-
-.ui.buttons .button + .button {
-  border-left: none;
-}
-
-/* a ghost button is a button without border */
-.button.button-ghost {
-  background: transparent;
-  border: none;
-  color: inherit;
-  margin: 0;
-  padding: 0;
-}
-
-.button.button-ghost:hover {
-  background: var(--color-hover);
-}
-
-.button.button-ghost:active {
-  background: var(--color-active);
-}
-
-.two-toggle-buttons .button:not(.active):first-of-type {
-  border-right: none;
-}
-
-.two-toggle-buttons .button.active:last-of-type {
-  border-left: 1px solid var(--color-light-border);
-}
-
-.ui.labeled.button.disabled > .button,
-.ui.basic.buttons .button,
-.ui.basic.button {
-  color: var(--color-text-light);
-  background: var(--color-light);
-}
-
-.ui.basic.buttons .button:hover,
-.ui.basic.button:hover {
-  color: var(--color-text);
-  background: var(--color-hover);
-}
-
-.ui.basic.buttons .button:focus,
-.ui.basic.button:focus,
-.ui.basic.buttons .button:active,
-.ui.basic.button:active,
-.ui.basic.buttons .active.button,
-.ui.basic.active.button,
-.ui.basic.buttons .active.button:hover,
-.ui.basic.active.button:hover {
-  color: var(--color-text);
-  background: var(--color-active);
-}
-
-.ui.labeled.button > .label {
-  border-color: var(--color-light-border);
-}
-
-.ui.labeled.icon.buttons > .button > .icon,
-.ui.labeled.icon.button > .icon {
-  background: var(--color-hover);
-}
-
-.ui.primary.button,
-.ui.primary.buttons .button {
-  background-color: var(--color-primary) !important;
-  color: var(--color-primary-contrast) !important;
-}
-
-.ui.primary.button:hover,
-.ui.primary.buttons .button:hover {
-  background-color: var(--color-primary-dark-2) !important;
-}
-
-.ui.primary.button:focus,
-.ui.primary.buttons .button:focus {
-  background-color: var(--color-primary-dark-3) !important;
-}
-
-.ui.basic.primary.button,
-.ui.basic.primary.buttons .button {
-  box-shadow: inset 0 0 0 1px var(--color-primary) !important;
-  color: var(--color-primary-contrast) !important;
-}
-
-.ui.basic.primary.button:hover,
-.ui.basic.primary.buttons .button:hover {
-  box-shadow: inset 0 0 0 1px var(--color-primary-dark-2) !important;
-}
-
-.ui.basic.primary.button:focus,
-.ui.basic.primary.buttons .button:focus {
-  box-shadow: inset 0 0 0 1px var(--color-primary-dark-3) !important;
-}
-
-.ui.basic.secondary.buttons .button,
-.ui.basic.secondary.button {
-  color: var(--color-secondary-dark-6) !important;
-}
-
-.ui.basic.secondary.buttons .button:hover,
-.ui.basic.secondary.button:hover,
-.ui.basic.secondary.buttons .button:active,
-.ui.basic.secondary.button:active {
-  color: var(--color-secondary-dark-8) !important;
-  border-color: var(--color-secondary-dark-1) !important;
-}
-
-.ui.basic.secondary.button:focus,
-.ui.basic.secondary.buttons .button:focus {
-  color: var(--color-secondary-dark-8) !important;
-  border-color: var(--color-secondary-dark-3) !important;
-}
-
 .ui.primary.label,
 .ui.primary.labels .label,
 .ui.ui.ui.primary.label {
diff --git a/web_src/css/editor/fileeditor.css b/web_src/css/editor/fileeditor.css
index 62ac915505..444ee8c7e7 100644
--- a/web_src/css/editor/fileeditor.css
+++ b/web_src/css/editor/fileeditor.css
@@ -82,6 +82,4 @@
 .edit-diff > div > .ui.table {
   border-top: none !important;
   border-bottom: none !important;
-  border-left: 1px solid var(--color-secondary) !important;
-  border-right: 1px solid var(--color-secondary) !important;
 }
diff --git a/web_src/css/index.css b/web_src/css/index.css
index 03f9d53a31..90ee41f524 100644
--- a/web_src/css/index.css
+++ b/web_src/css/index.css
@@ -1,5 +1,6 @@
 @import "./modules/normalize.css";
 @import "./modules/animations.css";
+@import "./modules/button.css";
 @import "./modules/tippy.css";
 @import "./modules/modal.css";
 @import "./modules/breadcrumb.css";
diff --git a/web_src/css/modules/button.css b/web_src/css/modules/button.css
new file mode 100644
index 0000000000..1f2d2a4494
--- /dev/null
+++ b/web_src/css/modules/button.css
@@ -0,0 +1,816 @@
+/* this contains override styles for buttons and related elements */
+
+.ui.button {
+  background: var(--color-button);
+  border: 1px solid var(--color-light-border);
+  color: var(--color-text);
+}
+
+/* a ghost button is a button without border */
+.button.button-ghost {
+  background: transparent;
+  border: none;
+  color: inherit;
+  margin: 0;
+  padding: 0;
+}
+
+.button.button-ghost:hover {
+  background: var(--color-hover);
+}
+
+.button.button-ghost:active {
+  background: var(--color-active);
+}
+
+.ui.button.button-link {
+  background: transparent;
+  border: none;
+  color: inherit;
+}
+
+.page-content .ui.button {
+  box-shadow: none !important;
+}
+
+.ui.button:focus,
+.ui.button:hover {
+  background: var(--color-hover);
+  color: var(--color-text);
+}
+
+.ui.active.button,
+.ui.button:active,
+.ui.active.button:active,
+.ui.active.button:hover {
+  background: var(--color-active);
+  color: var(--color-text);
+}
+
+.ui.button.no-text .icon {
+  margin: 0 !important;
+}
+
+.ui.buttons .button:first-child {
+  border-left: 1px solid var(--color-light-border);
+}
+
+.ui.buttons .button + .button {
+  border-left: none;
+}
+
+.ui.button.button-link:hover {
+  color: var(--color-primary);
+}
+
+.two-toggle-buttons .button:not(.active):first-of-type {
+  border-right: none;
+}
+
+.two-toggle-buttons .button.active:last-of-type {
+  border-left: 1px solid var(--color-light-border);
+}
+
+.ui.labeled.button.disabled > .button,
+.ui.basic.buttons .button,
+.ui.basic.button {
+  color: var(--color-text-light);
+  background: var(--color-light);
+}
+
+.ui.basic.buttons .button:hover,
+.ui.basic.button:hover {
+  color: var(--color-text);
+  background: var(--color-hover);
+}
+
+.ui.basic.buttons .button:focus,
+.ui.basic.button:focus,
+.ui.basic.buttons .button:active,
+.ui.basic.button:active,
+.ui.basic.buttons .active.button,
+.ui.basic.active.button,
+.ui.basic.buttons .active.button:hover,
+.ui.basic.active.button:hover {
+  color: var(--color-text);
+  background: var(--color-active);
+}
+
+.ui.labeled.button > .label {
+  border-color: var(--color-light-border);
+}
+
+.ui.labeled.icon.buttons > .button > .icon,
+.ui.labeled.icon.button > .icon {
+  background: var(--color-hover);
+}
+
+/* primary */
+
+.ui.primary.labels .label,
+.ui.ui.ui.primary.label,
+.ui.primary.button,
+.ui.primary.buttons .button {
+  background: var(--color-primary);
+}
+
+.ui.primary.button:hover,
+.ui.primary.buttons .button:hover,
+.ui.primary.button:focus,
+.ui.primary.buttons .button:focus {
+  background: var(--color-primary-hover);
+}
+
+.ui.primary.button:active,
+.ui.primary.buttons .button:active {
+  background: var(--color-primary-active);
+}
+
+.ui.basic.primary.buttons .button,
+.ui.basic.primary.button {
+  color: var(--color-primary);
+  border-color: var(--color-primary);
+}
+
+.ui.basic.primary.buttons .button:hover,
+.ui.basic.primary.button:hover,
+.ui.basic.primary.buttons .button:focus,
+.ui.basic.primary.button:focus {
+  color: var(--color-primary-hover);
+  border-color: var(--color-primary-hover);
+}
+
+.ui.basic.primary.buttons .button:active,
+.ui.basic.primary.button:active {
+  color: var(--color-primary-active);
+  border-color: var(--color-primary-active);
+}
+
+/* secondary */
+
+.ui.secondary.labels .label,
+.ui.ui.ui.secondary.label,
+.ui.secondary.button,
+.ui.secondary.buttons .button {
+  background: var(--color-secondary);
+  color: var(--color-text);
+}
+
+.ui.secondary.button:hover,
+.ui.secondary.buttons .button:hover,
+.ui.secondary.button:focus,
+.ui.secondary.buttons .button:focus {
+  background: var(--color-secondary-dark-1);
+  color: var(--color-text);
+}
+
+.ui.secondary.button:active,
+.ui.secondary.buttons .button:active {
+  background: var(--color-secondary-dark-2);
+  color: var(--color-text);
+}
+
+.ui.basic.secondary.buttons .button,
+.ui.basic.secondary.button {
+  color: var(--color-secondary-dark-6) !important;
+}
+
+.ui.basic.secondary.buttons .button:hover,
+.ui.basic.secondary.button:hover,
+.ui.basic.secondary.buttons .button:active,
+.ui.basic.secondary.button:active {
+  color: var(--color-secondary-dark-8) !important;
+  border-color: var(--color-secondary-dark-1) !important;
+}
+
+.ui.basic.secondary.button:focus,
+.ui.basic.secondary.buttons .button:focus {
+  color: var(--color-secondary-dark-8) !important;
+  border-color: var(--color-secondary-dark-3) !important;
+}
+
+/* tertiary */
+
+.ui.tertiary.button {
+  color: var(--color-text-light);
+  border: none;
+}
+
+.ui.tertiary.button:hover {
+  color: var(--color-text);
+}
+
+.ui.tertiary.button:focus {
+  color: var(--color-text-dark);
+}
+
+/* red */
+
+.ui.red.labels .label,
+.ui.ui.ui.red.label,
+.ui.red.button,
+.ui.red.buttons .button {
+  background: var(--color-red);
+}
+
+.ui.red.button:hover,
+.ui.red.buttons .button:hover,
+.ui.red.button:focus,
+.ui.red.buttons .button:focus {
+  background: var(--color-red-dark-1);
+}
+
+.ui.red.button:active,
+.ui.red.buttons .button:active {
+  background: var(--color-red-dark-2);
+}
+
+.ui.basic.red.buttons .button,
+.ui.basic.red.button {
+  color: var(--color-red);
+  border-color: var(--color-red);
+}
+
+.ui.basic.red.buttons .button:hover,
+.ui.basic.red.button:hover,
+.ui.basic.red.buttons .button:focus,
+.ui.basic.red.button:focus {
+  color: var(--color-red-dark-1);
+  border-color: var(--color-red-dark-1);
+}
+
+.ui.basic.red.buttons .button:active,
+.ui.basic.red.button:active {
+  color: var(--color-red-dark-2);
+  border-color: var(--color-red-dark-2);
+}
+
+/* orange */
+
+.ui.orange.labels .label,
+.ui.ui.ui.orange.label,
+.ui.orange.button,
+.ui.orange.buttons .button {
+  background: var(--color-orange);
+}
+
+.ui.orange.button:hover,
+.ui.orange.buttons .button:hover,
+.ui.orange.button:focus,
+.ui.orange.buttons .button:focus {
+  background: var(--color-orange-dark-1);
+}
+
+.ui.orange.button:active,
+.ui.orange.buttons .button:active {
+  background: var(--color-orange-dark-2);
+}
+
+.ui.basic.orange.buttons .button,
+.ui.basic.orange.button {
+  color: var(--color-orange);
+  border-color: var(--color-orange);
+}
+
+.ui.basic.orange.buttons .button:hover,
+.ui.basic.orange.button:hover,
+.ui.basic.orange.buttons .button:focus,
+.ui.basic.orange.button:focus {
+  color: var(--color-orange-dark-1);
+  border-color: var(--color-orange-dark-1);
+}
+
+.ui.basic.orange.buttons .button:active,
+.ui.basic.orange.button:active {
+  color: var(--color-orange-dark-2);
+  border-color: var(--color-orange-dark-2);
+}
+
+/* yellow */
+
+.ui.yellow.labels .label,
+.ui.ui.ui.yellow.label,
+.ui.yellow.button,
+.ui.yellow.buttons .button {
+  background: var(--color-yellow);
+}
+
+.ui.yellow.button:hover,
+.ui.yellow.buttons .button:hover,
+.ui.yellow.button:focus,
+.ui.yellow.buttons .button:focus {
+  background: var(--color-yellow-dark-1);
+}
+
+.ui.yellow.button:active,
+.ui.yellow.buttons .button:active {
+  background: var(--color-yellow-dark-2);
+}
+
+.ui.basic.yellow.buttons .button,
+.ui.basic.yellow.button {
+  color: var(--color-yellow);
+  border-color: var(--color-yellow);
+}
+
+.ui.basic.yellow.buttons .button:hover,
+.ui.basic.yellow.button:hover,
+.ui.basic.yellow.buttons .button:focus,
+.ui.basic.yellow.button:focus {
+  color: var(--color-yellow-dark-1);
+  border-color: var(--color-yellow-dark-1);
+}
+
+.ui.basic.yellow.buttons .button:active,
+.ui.basic.yellow.button:active {
+  color: var(--color-yellow-dark-2);
+  border-color: var(--color-yellow-dark-2);
+}
+
+/* olive */
+
+.ui.olive.labels .label,
+.ui.ui.ui.olive.label,
+.ui.olive.button,
+.ui.olive.buttons .button {
+  background: var(--color-olive);
+}
+
+.ui.olive.button:hover,
+.ui.olive.buttons .button:hover,
+.ui.olive.button:focus,
+.ui.olive.buttons .button:focus {
+  background: var(--color-olive-dark-1);
+}
+
+.ui.olive.button:active,
+.ui.olive.buttons .button:active {
+  background: var(--color-olive-dark-2);
+}
+
+.ui.basic.olive.buttons .button,
+.ui.basic.olive.button {
+  color: var(--color-olive);
+  border-color: var(--color-olive);
+}
+
+.ui.basic.olive.buttons .button:hover,
+.ui.basic.olive.button:hover,
+.ui.basic.olive.buttons .button:focus,
+.ui.basic.olive.button:focus {
+  color: var(--color-olive-dark-1);
+  border-color: var(--color-olive-dark-1);
+}
+
+.ui.basic.olive.buttons .button:active,
+.ui.basic.olive.button:active {
+  color: var(--color-olive-dark-2);
+  border-color: var(--color-olive-dark-2);
+}
+
+/* green */
+
+.ui.green.labels .label,
+.ui.ui.ui.green.label,
+.ui.green.button,
+.ui.green.buttons .button {
+  background: var(--color-green);
+}
+
+.ui.green.button:hover,
+.ui.green.buttons .button:hover,
+.ui.green.button:focus,
+.ui.green.buttons .button:focus {
+  background: var(--color-green-dark-1);
+}
+
+.ui.green.button:active,
+.ui.green.buttons .button:active {
+  background: var(--color-green-dark-2);
+}
+
+.ui.basic.green.buttons .button,
+.ui.basic.green.button {
+  color: var(--color-green);
+  border-color: var(--color-green);
+}
+
+.ui.basic.green.buttons .button:hover,
+.ui.basic.green.button:hover,
+.ui.basic.green.buttons .button:focus,
+.ui.basic.green.button:focus {
+  color: var(--color-green-dark-1);
+  border-color: var(--color-green-dark-1);
+}
+
+.ui.basic.green.buttons .button:active,
+.ui.basic.green.button:active {
+  color: var(--color-green-dark-2);
+  border-color: var(--color-green-dark-2);
+}
+
+/* teal */
+
+.ui.teal.labels .label,
+.ui.ui.ui.teal.label,
+.ui.teal.button,
+.ui.teal.buttons .button {
+  background: var(--color-teal);
+}
+
+.ui.teal.button:hover,
+.ui.teal.buttons .button:hover,
+.ui.teal.button:focus,
+.ui.teal.buttons .button:focus {
+  background: var(--color-teal-dark-1);
+}
+
+.ui.teal.button:active,
+.ui.teal.buttons .button:active {
+  background: var(--color-teal-dark-2);
+}
+
+.ui.basic.teal.buttons .button,
+.ui.basic.teal.button {
+  color: var(--color-teal);
+  border-color: var(--color-teal);
+}
+
+.ui.basic.teal.buttons .button:hover,
+.ui.basic.teal.button:hover,
+.ui.basic.teal.buttons .button:focus,
+.ui.basic.teal.button:focus {
+  color: var(--color-teal-dark-1);
+  border-color: var(--color-teal-dark-1);
+}
+
+.ui.basic.teal.buttons .button:active,
+.ui.basic.teal.button:active {
+  color: var(--color-teal-dark-2);
+  border-color: var(--color-teal-dark-2);
+}
+
+/* blue */
+
+.ui.blue.labels .label,
+.ui.ui.ui.blue.label,
+.ui.blue.button,
+.ui.blue.buttons .button {
+  background: var(--color-blue);
+}
+
+.ui.blue.button:hover,
+.ui.blue.buttons .button:hover,
+.ui.blue.button:focus,
+.ui.blue.buttons .button:focus {
+  background: var(--color-blue-dark-1);
+}
+
+.ui.blue.button:active,
+.ui.blue.buttons .button:active {
+  background: var(--color-blue-dark-2);
+}
+
+.ui.basic.blue.buttons .button,
+.ui.basic.blue.button {
+  color: var(--color-blue);
+  border-color: var(--color-blue);
+}
+
+.ui.basic.blue.buttons .button:hover,
+.ui.basic.blue.button:hover,
+.ui.basic.blue.buttons .button:focus,
+.ui.basic.blue.button:focus {
+  color: var(--color-blue-dark-1);
+  border-color: var(--color-blue-dark-1);
+}
+
+.ui.basic.blue.buttons .button:active,
+.ui.basic.blue.button:active {
+  color: var(--color-blue-dark-2);
+  border-color: var(--color-blue-dark-2);
+}
+
+/* violet */
+
+.ui.violet.labels .label,
+.ui.ui.ui.violet.label,
+.ui.violet.button,
+.ui.violet.buttons .button {
+  background: var(--color-violet);
+}
+
+.ui.violet.button:hover,
+.ui.violet.buttons .button:hover,
+.ui.violet.button:focus,
+.ui.violet.buttons .button:focus {
+  background: var(--color-violet-dark-1);
+}
+
+.ui.violet.button:active,
+.ui.violet.buttons .button:active {
+  background: var(--color-violet-dark-2);
+}
+
+.ui.basic.violet.buttons .button,
+.ui.basic.violet.button {
+  color: var(--color-violet);
+  border-color: var(--color-violet);
+}
+
+.ui.basic.violet.buttons .button:hover,
+.ui.basic.violet.button:hover,
+.ui.basic.violet.buttons .button:focus,
+.ui.basic.violet.button:focus {
+  color: var(--color-violet-dark-1);
+  border-color: var(--color-violet-dark-1);
+}
+
+.ui.basic.violet.buttons .button:active,
+.ui.basic.violet.button:active {
+  color: var(--color-violet-dark-2);
+  border-color: var(--color-violet-dark-2);
+}
+
+/* purple */
+
+.ui.purple.labels .label,
+.ui.ui.ui.purple.label,
+.ui.purple.button,
+.ui.purple.buttons .button {
+  background: var(--color-purple);
+}
+
+.ui.purple.button:hover,
+.ui.purple.buttons .button:hover,
+.ui.purple.button:focus,
+.ui.purple.buttons .button:focus {
+  background: var(--color-purple-dark-1);
+}
+
+.ui.purple.button:active,
+.ui.purple.buttons .button:active {
+  background: var(--color-purple-dark-2);
+}
+
+.ui.basic.purple.buttons .button,
+.ui.basic.purple.button {
+  color: var(--color-purple);
+  border-color: var(--color-purple);
+}
+
+.ui.basic.purple.buttons .button:hover,
+.ui.basic.purple.button:hover,
+.ui.basic.purple.buttons .button:focus,
+.ui.basic.purple.button:focus {
+  color: var(--color-purple-dark-1);
+  border-color: var(--color-purple-dark-1);
+}
+
+.ui.basic.purple.buttons .button:active,
+.ui.basic.purple.button:active {
+  color: var(--color-purple-dark-2);
+  border-color: var(--color-purple-dark-2);
+}
+
+/* pink */
+
+.ui.pink.labels .label,
+.ui.ui.ui.pink.label,
+.ui.pink.button,
+.ui.pink.buttons .button {
+  background: var(--color-pink);
+}
+
+.ui.pink.button:hover,
+.ui.pink.buttons .button:hover,
+.ui.pink.button:focus,
+.ui.pink.buttons .button:focus {
+  background: var(--color-pink-dark-1);
+}
+
+.ui.pink.button:active,
+.ui.pink.buttons .button:active {
+  background: var(--color-pink-dark-2);
+}
+
+.ui.basic.pink.buttons .button,
+.ui.basic.pink.button {
+  color: var(--color-pink);
+  border-color: var(--color-pink);
+}
+
+.ui.basic.pink.buttons .button:hover,
+.ui.basic.pink.button:hover,
+.ui.basic.pink.buttons .button:focus,
+.ui.basic.pink.button:focus {
+  color: var(--color-pink-dark-1);
+  border-color: var(--color-pink-dark-1);
+}
+
+.ui.basic.pink.buttons .button:active,
+.ui.basic.pink.button:active {
+  color: var(--color-pink-dark-2);
+  border-color: var(--color-pink-dark-2);
+}
+
+/* brown */
+
+.ui.brown.labels .label,
+.ui.ui.ui.brown.label,
+.ui.brown.button,
+.ui.brown.buttons .button {
+  background: var(--color-brown);
+}
+
+.ui.brown.button:hover,
+.ui.brown.buttons .button:hover,
+.ui.brown.button:focus,
+.ui.brown.buttons .button:focus {
+  background: var(--color-brown-dark-1);
+}
+
+.ui.brown.button:active,
+.ui.brown.buttons .button:active {
+  background: var(--color-brown-dark-2);
+}
+
+.ui.basic.brown.buttons .button,
+.ui.basic.brown.button {
+  color: var(--color-brown);
+  border-color: var(--color-brown);
+}
+
+.ui.basic.brown.buttons .button:hover,
+.ui.basic.brown.button:hover,
+.ui.basic.brown.buttons .button:focus,
+.ui.basic.brown.button:focus {
+  color: var(--color-brown-dark-1);
+  border-color: var(--color-brown-dark-1);
+}
+
+.ui.basic.brown.buttons .button:active,
+.ui.basic.brown.button:active {
+  color: var(--color-brown-dark-2);
+  border-color: var(--color-brown-dark-2);
+}
+
+/* grey */
+
+.ui.grey.labels .label,
+.ui.ui.ui.grey.label,
+.ui.grey.button,
+.ui.grey.buttons .button {
+  background: var(--color-grey);
+}
+
+.ui.grey.button:hover,
+.ui.grey.buttons .button:hover,
+.ui.grey.button:focus,
+.ui.grey.buttons .button:focus {
+  background: var(--color-grey-dark-1);
+}
+
+.ui.grey.button:active,
+.ui.grey.buttons .button:active {
+  background: var(--color-grey-dark-2);
+}
+
+.ui.basic.grey.buttons .button,
+.ui.basic.grey.button {
+  color: var(--color-grey);
+  border-color: var(--color-grey);
+}
+
+.ui.basic.grey.buttons .button:hover,
+.ui.basic.grey.button:hover,
+.ui.basic.grey.buttons .button:focus,
+.ui.basic.grey.button:focus {
+  color: var(--color-grey-dark-1);
+  border-color: var(--color-grey-dark-1);
+}
+
+.ui.basic.grey.buttons .button:active,
+.ui.basic.grey.button:active {
+  color: var(--color-grey-dark-2);
+  border-color: var(--color-grey-dark-2);
+}
+
+/* black */
+
+.ui.black.labels .label,
+.ui.ui.ui.black.label,
+.ui.black.button,
+.ui.black.buttons .button {
+  background: var(--color-black);
+}
+
+.ui.black.button:hover,
+.ui.black.buttons .button:hover,
+.ui.black.button:focus,
+.ui.black.buttons .button:focus {
+  background: var(--color-black-dark-1);
+}
+
+.ui.black.button:active,
+.ui.black.buttons .button:active {
+  background: var(--color-black-dark-2);
+}
+
+.ui.basic.black.buttons .button,
+.ui.basic.black.button {
+  color: var(--color-black);
+  border-color: var(--color-black);
+}
+
+.ui.basic.black.buttons .button:hover,
+.ui.basic.black.button:hover,
+.ui.basic.black.buttons .button:focus,
+.ui.basic.black.button:focus {
+  color: var(--color-black-dark-1);
+  border-color: var(--color-black-dark-1);
+}
+
+.ui.basic.black.buttons .button:active,
+.ui.basic.black.button:active {
+  color: var(--color-black-dark-2);
+  border-color: var(--color-black-dark-2);
+}
+
+.ui.negative.buttons .button,
+.ui.negative.button {
+  background: var(--color-red);
+}
+
+.ui.negative.buttons .button:hover,
+.ui.negative.button:hover,
+.ui.negative.buttons .button:focus,
+.ui.negative.button:focus {
+  background: var(--color-red-dark-1);
+}
+
+.ui.negative.buttons .button:active,
+.ui.negative.button:active {
+  background: var(--color-red-dark-2);
+}
+
+/* negative */
+
+.ui.basic.negative.buttons .button,
+.ui.basic.negative.button {
+  color: var(--color-red);
+  border-color: var(--color-red);
+}
+
+.ui.basic.negative.buttons .button:hover,
+.ui.basic.negative.button:hover,
+.ui.basic.negative.buttons .button:focus,
+.ui.basic.negative.button:focus {
+  color: var(--color-red-dark-1);
+  border-color: var(--color-red-dark-1);
+}
+
+.ui.basic.negative.buttons .button:active,
+.ui.basic.negative.button:active {
+  color: var(--color-red-dark-2);
+  border-color: var(--color-red-dark-2);
+}
+
+/* positive */
+
+.ui.positive.buttons .button,
+.ui.positive.button {
+  background: var(--color-green);
+}
+
+.ui.positive.buttons .button:hover,
+.ui.positive.button:hover,
+.ui.positive.buttons .button:focus,
+.ui.positive.button:focus {
+  background: var(--color-green-dark-1);
+}
+
+.ui.positive.buttons .button:active,
+.ui.positive.button:active {
+  background: var(--color-green-dark-2);
+}
+
+.ui.basic.positive.buttons .button,
+.ui.basic.positive.button {
+  color: var(--color-green);
+  border-color: var(--color-green);
+}
+
+.ui.basic.positive.buttons .button:hover,
+.ui.basic.positive.button:hover,
+.ui.basic.positive.buttons .button:focus,
+.ui.basic.positive.button:focus {
+  color: var(--color-green-dark-1);
+  border-color: var(--color-green-dark-1);
+}
+
+.ui.basic.positive.buttons .button:active,
+.ui.basic.positive.button:active {
+  color: var(--color-green-dark-2);
+  border-color: var(--color-green-dark-2);
+}
diff --git a/web_src/css/repo.css b/web_src/css/repo.css
index be9a3ae585..05f0019020 100644
--- a/web_src/css/repo.css
+++ b/web_src/css/repo.css
@@ -1844,6 +1844,15 @@
   scroll-margin-top: 47px; /* match .repository .diff-detail-box */
 }
 
+.file.editor .diff-file-box {
+  border: none;
+}
+
+.file.editor .diff-file-box .ui.attached.table {
+  border: none;
+}
+
+
 @media (max-width: 991px) {
   .diff-file-box {
     scroll-margin-top: 77px; /* match .repository .diff-detail-box */
diff --git a/web_src/css/themes/theme-arc-green.css b/web_src/css/themes/theme-arc-green.css
index 88dbe10d97..3c2a81470f 100644
--- a/web_src/css/themes/theme-arc-green.css
+++ b/web_src/css/themes/theme-arc-green.css
@@ -29,6 +29,8 @@
   --color-primary-alpha-70: #87ab63b3;
   --color-primary-alpha-80: #87ab63cc;
   --color-primary-alpha-90: #87ab63e1;
+  --color-primary-hover: var(--color-primary-light-1);
+  --color-primary-active: var(--color-primary-light-2);
   --color-secondary: #525767;
   --color-secondary-dark-1: #5c6374;
   --color-secondary-dark-2: #666e81;
@@ -56,6 +58,8 @@
   --color-secondary-alpha-70: #525767b3;
   --color-secondary-alpha-80: #525767cc;
   --color-secondary-alpha-90: #525767e1;
+  --color-secondary-hover: var(--color-secondary-light-1);
+  --color-secondary-active: var(--color-secondary-light-2);
   /* console colors */
   --color-console-fg: #ffffff;
   --color-console-bg: #262936;
@@ -75,19 +79,45 @@
   --color-pink: #d22e8b;
   --color-brown: #a47252;
   --color-black: #2e323e;
-  /* light variants - produced via Sass scale-color(color, $lightness: -10%) */
-  --color-red-light: #c23636;
-  --color-orange-light: #b84f0b;
-  --color-yellow-light: #b88a03;
-  --color-olive-light: #839311;
-  --color-green-light: #7a9e55;
-  --color-teal-light: #00837c;
-  --color-blue-light: #347cb3;
-  --color-violet-light: #7b4edb;
-  --color-purple-light: #a742c9;
-  --color-pink-light: #be297d;
-  --color-brown-light: #94674a;
-  --color-black-light: #292d38;
+  /* light variants - produced via Sass scale-color(color, $lightness: +10%) */
+  --color-red-light: #d15a5a;
+  --color-orange-light: #f6a066;
+  --color-yellow-light: #eaaf03;
+  --color-olive-light: #abc016;
+  --color-green-light: #93b373;
+  --color-teal-light: #00b6ad;
+  --color-blue-light: #4e96cc;
+  --color-violet-light: #9b79e4;
+  --color-purple-light: #ba6ad5;
+  --color-pink-light: #d74397;
+  --color-brown-light: #b08061;
+  --color-black-light: #3f4555;
+  /* dark 1 variants - produced via Sass scale-color(color, $lightness: -10%) */
+  --color-red-dark-1: #c23636;
+  --color-orange-dark-1: #f38236;
+  --color-yellow-dark-1: #b88a03;
+  --color-olive-dark-1: #839311;
+  --color-green-dark-1: #7a9e55;
+  --color-teal-dark-1: #00837c;
+  --color-blue-dark-1: #347cb3;
+  --color-violet-dark-1: #7b4edb;
+  --color-purple-dark-1: #a742c9;
+  --color-pink-dark-1: #be297d;
+  --color-brown-dark-1: #94674a;
+  --color-black-dark-1: #292d38;
+  /* dark 2 variants - produced via Sass scale-color(color, $lightness: -20%) */
+  --color-red-dark-2: #ad3030;
+  --color-orange-dark-2: #f16e17;
+  --color-yellow-dark-2: #a37a02;
+  --color-olive-dark-2: #74820f;
+  --color-green-dark-2: #6c8c4c;
+  --color-teal-dark-2: #00746e;
+  --color-blue-dark-2: #2e6e9f;
+  --color-violet-dark-2: #6733d6;
+  --color-purple-dark-2: #9834b9;
+  --color-pink-dark-2: #a9246f;
+  --color-brown-dark-2: #835b42;
+  --color-black-dark-2: #252832;
   /* other colors */
   --color-grey: #505665;
   --color-grey-light: #a1a6b7;