Navbar styling rework (#25343)

- Extract navbar CSS to own file
- Reduce height from 52px to 50px
- Give every item a hover effect of of 36px, including the logo and on
mobile
- Consistent horizontal padding of 10px left and right

<img width="549" alt="Screenshot 2023-06-18 at 13 41 16"
src="https://github.com/go-gitea/gitea/assets/115237/0b00d101-253e-4b1f-9ee2-322d60fb2e26">

<img width="98" alt="Screenshot 2023-06-18 at 14 03 43"
src="https://github.com/go-gitea/gitea/assets/115237/4ef5d98b-4d1e-45de-822e-c2c844e19876">
<img width="234" alt="Screenshot 2023-06-18 at 14 03 18"
src="https://github.com/go-gitea/gitea/assets/115237/a4d9b04b-83de-42aa-a9ce-f010a9690688">

<img width="873" alt="Screenshot 2023-06-18 at 13 58 28"
src="https://github.com/go-gitea/gitea/assets/115237/8cb8e31e-2adf-40c8-ae3f-d00d011b4d1b">

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

1 files changed, 138 insertions, 0 deletions

diff --git a/web_src/css/modules/navbar.css b/web_src/css/modules/navbar.css
new file mode 100644
index 0000000000..abc6afc690
--- /dev/null
+++ b/web_src/css/modules/navbar.css
@@ -0,0 +1,138 @@
+#navbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  background: var(--color-nav-bg);
+  border-bottom: 1px solid var(--color-secondary);
+  margin: 0 !important;
+  padding: 0 10px;
+}
+
+#navbar,
+#navbar .navbar-left,
+#navbar .navbar-right {
+  min-height: 49px; /* +1px border-bottom */
+}
+
+#navbar .navbar-left,
+#navbar .navbar-right {
+  margin: 0;
+  display: flex;
+  align-items: center;
+}
+
+#navbar-logo {
+  margin: 0;
+}
+
+#navbar .item {
+  min-height: 36px;
+  min-width: 36px;
+  padding-top: 3px;
+  padding-bottom: 3px;
+  display: flex;
+  justify-content: center;
+}
+
+#navbar a.item:hover,
+#navbar button.item:hover {
+  background: var(--color-nav-hover-bg);
+}
+
+#navbar .secondary.menu > .item > .svg,
+#navbar .right.menu > .item > .svg {
+  margin-right: 0;
+}
+
+@media (max-width: 767.98px) {
+  #navbar {
+    align-items: stretch;
+  }
+  /* hide all items */
+  #navbar .item {
+    display: none;
+  }
+  #navbar #navbar-logo {
+    display: flex;
+  }
+  /* show the first navbar item (logo and its mobile right items) */
+  #navbar .navbar-left {
+    flex: 1;
+    display: flex;
+    justify-content: space-between;
+  }
+  #navbar .navbar-mobile-right {
+    display: flex;
+    margin-left: auto !important;
+    width: auto !important;
+  }
+  #navbar .navbar-mobile-right > .item {
+    display: flex;
+    width: auto !important;
+  }
+  /* show items if the navbar is open */
+  #navbar.navbar-menu-open {
+    padding-bottom: 8px;
+  }
+  #navbar.navbar-menu-open,
+  #navbar.navbar-menu-open .navbar-right {
+    flex-direction: column;
+  }
+  #navbar.navbar-menu-open .navbar-left {
+    display: flex;
+    flex-wrap: wrap;
+  }
+  #navbar.navbar-menu-open .item {
+    display: flex;
+    width: 100%;
+  }
+  #navbar.navbar-menu-open .navbar-left #navbar-logo {
+    justify-content: flex-start;
+    width: 50%;
+    min-height: 48px;
+  }
+  #navbar.navbar-menu-open .navbar-left .navbar-mobile-right {
+    justify-content: flex-end;
+    width: 50%;
+    min-height: 48px;
+  }
+  #navbar.navbar-menu-open .mobile-right-item {
+    width: auto !important;
+  }
+}
+
+@media (min-width: 767.98px) {
+  #navbar .navbar-mobile-right,
+  #navbar .mobile-only {
+    display: none;
+  }
+}
+
+#navbar a.item .notification_count {
+  color: var(--color-nav-bg);
+  padding: 0 3.75px;
+  font-size: 12px;
+  line-height: 12px;
+  font-weight: var(--font-weight-bold);
+}
+
+#navbar a.item:hover .notification_count,
+#navbar a.item:hover .header-stopwatch-dot {
+  border-color: var(--color-nav-hover-bg);
+}
+
+#navbar a.item .notification_count,
+#navbar a.item .header-stopwatch-dot {
+  background: var(--color-primary);
+  border: 2px solid var(--color-nav-bg);
+  position: absolute;
+  left: 6px;
+  top: -9px;
+  min-width: 17px;
+  min-height: 17px;
+  border-radius: 17px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1; /* prevent menu button background from overlaying icon */
+}