Improve migrate page and add card CSS (#13751)

- Use original gitea logo on migrate page
- Add card styles and map colors to css vars
- Tweak migrate page, adding hover effect to cards

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

web_src/less/_base.less

@@ -94,10 +94,12 @@
   --color-hover: #0000000a;
   --color-active: #00000010;
   --color-menu: #ffffff;
+  --color-card: #ffffff;
   --color-markdown-table-row: #00000008;
   --color-markdown-code-block: #00000010;
   --color-button: #ffffff;
   --color-code-bg: #ffffff;
+  --color-shadow: #00000024;
 }
 
 :root:lang(ja) {
@@ -374,6 +376,48 @@ a.muted:hover,
   box-shadow: -1px -1px 0 0 var(--color-secondary);
 }
 
+.ui.cards > .card,
+.ui.card {
+  background: var(--color-card);
+  border: 1px solid var(--color-secondary);
+  box-shadow: none;
+}
+
+.ui.cards > .card > .content,
+.ui.card > .content {
+  border-color: var(--color-secondary);
+}
+
+.ui.cards > .card > .extra,
+.ui.card > .extra,
+.ui.cards > .card > .extra a:not(.ui),
+.ui.card > .extra a:not(.ui) {
+  color: var(--color-text);
+}
+
+.ui.cards > .card > .extra a:not(.ui):hover,
+.ui.card > .extra a:not(.ui):hover {
+  color: var(--color-primary);
+}
+
+.ui.cards > .card > .content > .header,
+.ui.card > .content > .header {
+  color: var(--color-text);
+}
+
+.ui.cards > .card > .content > .description,
+.ui.card > .content > .description {
+  color: var(--color-text);
+}
+
+.ui.cards a.card:hover,
+.ui.link.cards .card:not(.icon):hover,
+a.ui.card:hover,
+.ui.link.card:hover {
+  border: 1px solid var(--color-secondary);
+  background: var(--color-card);
+}
+
 .ui.progress[data-percent="0"] .bar .progress {
   color: var(--color-text);
 }

web_src/less/_repository.less

@@ -3206,6 +3206,13 @@ td.blob-excerpt {
   }
 }
 
-.migrate .cards .card {
-  text-align: center;
+.repository.migrate .card {
+  transition: all .1s ease-in-out;
+  box-shadow: none !important;
+  border: 1px solid var(--color-secondary);
+}
+
+.repository.migrate .card:hover {
+  transform: scale(105%);
+  box-shadow: 0 .5rem 1rem var(--color-shadow) !important;
 }

web_src/less/helpers.less

@@ -1,6 +1,7 @@
 .df { display: flex !important; }
 .dif { display: inline-flex !important; }
 .ac { align-items: center !important; }
+.tc { text-align: center !important; }
 .jc { justify-content: center !important; }
 .js { justify-content: flex-start !important; }
 .je { justify-content: flex-end !important; }

web_src/less/themes/theme-arc-green.less

@@ -89,10 +89,12 @@
   --color-hover: #ffffff0d;
   --color-active: #ffffff14;
   --color-menu: #2e323e;
+  --color-card: #2e323e;
   --color-markdown-table-row: #ffffff06;
   --color-markdown-code-block: #2a2e3a;
   --color-button: #353846;
   --color-code-bg: #2a2e3a;
+  --color-shadow: #00000060;
 }
 
 /* LineTableTD */
@@ -817,22 +819,6 @@ td.blob-hunk {
   background: #353945;
 }
 
-.ui.card,
-.ui.cards > .card {
-  background: #353945;
-  box-shadow: 0 0 0 1px var(--color-secondary);
-}
-
-.ui.card > .content > .header,
-.ui.cards > .card > .content > .header {
-  color: #dbdbdb;
-}
-
-.ui.card > .extra a:not(.ui),
-.ui.cards > .card > .extra a:not(.ui) {
-  color: #87ab63;
-}
-
 .ui .text.black {
   color: var(--color-secondary-dark-6);
 }
@@ -1366,19 +1352,3 @@ img[src$="/img/matrix.svg"] {
   border: 1px solid rgba(121, 71, 66, .5) !important;
   border-bottom: none !important;
 }
-
-.migrate .cards .card {
-  text-align: center;
-}
-
-.migrate .cards .card .content a {
-  color: rgb(158, 158, 158) !important;
-}
-
-.migrate .cards .card .content a:hover {
-  color: rgb(255, 255, 255) !important;
-}
-
-.migrate .cards .card .content .description {
-  color: rgb(158, 158, 158);
-}

web_src/svg/gitea-gitea.svg

@@ -1 +0,0 @@
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