Fix UI on mobile view (#25315) (#25340)

Backport #25315 by @denyskon

Various fixes to pages or elements which were looking ugly on mobile.
<details>
<summary>Screenshots</summary>

![Bildschirmfoto vom 2023-06-17
20-38-41](https://github.com/go-gitea/gitea/assets/47871822/30b5d3ce-df3b-43eb-a4c2-c3790667fb9d)
![Bildschirmfoto vom 2023-06-17
20-39-27](https://github.com/go-gitea/gitea/assets/47871822/27c07b25-3602-4fb2-b34d-d5e875e054e9)

![Bildschirmfoto vom 2023-06-17
20-41-27](https://github.com/go-gitea/gitea/assets/47871822/dacdbb4e-e3dd-4b94-abf0-c68e3d64bd3b)
![Bildschirmfoto vom 2023-06-17
20-41-48](https://github.com/go-gitea/gitea/assets/47871822/72432c35-7c4a-4c7f-a767-3562f26a5c14)
![Bildschirmfoto vom 2023-06-17
20-42-37](https://github.com/go-gitea/gitea/assets/47871822/737c26ed-1910-4467-98ef-e8769bbbe6f0)
![Bildschirmfoto vom 2023-06-17
20-42-52](https://github.com/go-gitea/gitea/assets/47871822/1813b4bc-43c0-4912-8acb-5d799c090bf3)
![Bildschirmfoto vom 2023-06-17
20-43-06](https://github.com/go-gitea/gitea/assets/47871822/136466e8-34e5-419d-97ec-5202ff819fd2)
![Bildschirmfoto vom 2023-06-17
20-43-42](https://github.com/go-gitea/gitea/assets/47871822/59270bb2-d661-4a84-8504-3e50f771f767)
![Bildschirmfoto vom 2023-06-17
20-44-44](https://github.com/go-gitea/gitea/assets/47871822/494e274d-3771-4141-9419-0a4bbd8b7f64)

</details>

Co-authored by: @silverwind

Co-authored-by: Denys Konovalov <kontakt@denyskon.de>
Co-authored-by: silverwind <me@silverwind.io>

5 files changed, 133 insertions, 51 deletions

diff --git a/web_src/css/index.css b/web_src/css/index.css
index c9cc1d8032..125249ceab 100644
--- a/web_src/css/index.css
+++ b/web_src/css/index.css
@@ -9,6 +9,7 @@
 @import "./modules/comment.css";
 
 @import "./shared/issuelist.css";
+@import "./shared/milestone.css";
 @import "./shared/repoorg.css";
 @import "./shared/settings.css";
 
diff --git a/web_src/css/repo.css b/web_src/css/repo.css
index 546fff32f4..60a2f97a3f 100644
--- a/web_src/css/repo.css
+++ b/web_src/css/repo.css
@@ -87,6 +87,18 @@
   }
 }
 
+.projects-header {
+  margin-bottom: 1rem;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.projects-toolbar {
+  display: flex;
+  justify-content: space-between;
+  padding-left: 4px;
+}
+
 .repository .issue-content-right .menu {
   overflow-x: auto;
   max-height: 500px;
@@ -225,6 +237,14 @@
   align-items: center;
 }
 
+@media (max-width: 767.68px) {
+  .repository.file.list .repo-description {
+    flex-direction: column;
+    gap: 8px;
+    align-items: normal;
+  }
+}
+
 .repository.file.list #repo-desc {
   font-size: 1.2em;
 }
@@ -1167,56 +1187,6 @@
   margin-top: -8px;
 }
 
-.repository .milestone.list {
-  list-style: none;
-}
-
-.repository .milestone.list > .item {
-  padding-top: 10px;
-  padding-bottom: 10px;
-}
-
-.repository .milestone.list > .item + .item {
-  border-top: 1px solid var(--color-secondary);
-}
-
-.repository .milestone.list > .item progress {
-  width: 200px;
-  height: 16px;
-}
-
-.repository .milestone.list > .item .meta {
-  color: var(--color-text-light-2);
-  padding-top: 5px;
-}
-
-.repository .milestone.list > .item .meta .issue-stats .svg {
-  padding-left: 5px;
-}
-
-.repository .milestone.list > .item .meta .overdue {
-  color: var(--color-red);
-}
-
-.repository .milestone.list > .item .operate {
-  margin-top: -15px;
-}
-
-.repository .milestone.list > .item .operate > a {
-  font-size: 15px;
-  padding-top: 5px;
-  padding-right: 10px;
-  color: var(--color-text-light-2);
-}
-
-.repository .milestone.list > .item .operate > a:hover {
-  color: var(--color-text);
-}
-
-.repository .milestone.list > .item .content {
-  padding-top: 10px;
-}
-
 .repository.new.milestone textarea {
   height: 200px;
 }
@@ -1966,6 +1936,13 @@
   }
 }
 
+.repository .activity-header {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+  flex-wrap: wrap;
+}
+
 .repository.settings.collaboration .collaborator.list {
   padding: 0;
 }
@@ -3383,6 +3360,12 @@ tbody.commit-list {
   margin-bottom: 8px;
 }
 
+@media (max-width: 767.98px) {
+  #issue-pins {
+    grid-template-columns: repeat(1, 1fr);
+  }
+}
+
 .pinned-issue-card {
   border-radius: var(--border-radius);
   padding: 8px 10px;
diff --git a/web_src/css/repo/issue-list.css b/web_src/css/repo/issue-list.css
index dde3e7f19f..ddd425d068 100644
--- a/web_src/css/repo/issue-list.css
+++ b/web_src/css/repo/issue-list.css
@@ -13,3 +13,23 @@
 .issue-list-toolbar-right {
   margin-left: auto;
 }
+
+@media (max-width: 767.98px) {
+  .issue-list-toolbar {
+    flex-direction: column-reverse;
+  }
+  .issue-list-toolbar-right {
+    margin-right: auto;
+    width: 100%;
+  }
+  .issue-list-navbar {
+    order: 0;
+  }
+  .issue-list-new {
+    order: 1;
+    margin-left: auto !important;
+  }
+  .issue-list-search {
+    order: 2 !important;
+  }
+}
diff --git a/web_src/css/repo/list-header.css b/web_src/css/repo/list-header.css
index 69539b035b..304cfbc13c 100644
--- a/web_src/css/repo/list-header.css
+++ b/web_src/css/repo/list-header.css
@@ -8,7 +8,6 @@
 .list-header-sort {
   display: flex;
   align-items: center;
-  justify-content: flex-end;
   padding-left: 1rem;
   padding-right: 1rem;
 }
@@ -44,3 +43,16 @@
 .small-menu-items .item.active {
   background: var(--color-active) !important;
 }
+
+@media (max-width: 767.98px) {
+  .list-header-search {
+    order: 0;
+  }
+  .list-header-toggle {
+    order: 1;
+  }
+  .list-header-sort {
+    order: 2;
+    margin-left: auto;
+  }
+}
diff --git a/web_src/css/shared/milestone.css b/web_src/css/shared/milestone.css
new file mode 100644
index 0000000000..511a1be714
--- /dev/null
+++ b/web_src/css/shared/milestone.css
@@ -0,0 +1,66 @@
+.milestone-list {
+  list-style: none;
+}
+
+.milestone-card {
+  width: 100%;
+  padding-top: 10px;
+  padding-bottom: 10px;
+}
+
+.milestone-card + .milestone-card {
+  border-top: 1px solid var(--color-secondary);
+}
+
+.milestone-card .content {
+  padding-top: 10px;
+}
+
+.milestone-header progress {
+  width: 200px;
+  height: 16px;
+}
+
+.milestone-header {
+  display: flex;
+  align-items: center;
+  margin: 0;
+  flex-wrap: wrap;
+  justify-content: space-between;
+}
+
+.milestone-toolbar {
+  padding-top: 5px;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  justify-content: space-between;
+}
+
+.milestone-toolbar .group {
+  color: var(--color-text-light-2);
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.milestone-toolbar .group .overdue {
+  color: var(--color-red);
+}
+
+.milestone-toolbar .group > a {
+  font-size: 15px;
+  color: var(--color-text-light-2);
+}
+
+.milestone-toolbar .group > a:hover {
+  color: var(--color-text);
+}
+
+@media (max-width: 767.98px) {
+  .milestone-card {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+  }
+}