rustdoc: tweak outline color on minus button and dark toggle all

Author: notriddle

src/librustdoc/html/static/css/rustdoc.css

@@ -1338,9 +1338,9 @@ a.tooltip:hover::after {
 	opacity: 1;
 }
 
-#settings-menu > a:hover, #settings-menu > a:focus,
-#help-button > a:hover, #help-button > a:focus,
-button#toggle-all-docs:hover, button#toggle-all-docs:focus {
+#settings-menu > a:hover, #settings-menu > a:focus-visible,
+#help-button > a:hover, #help-button > a:focus-visible,
+button#toggle-all-docs:hover, button#toggle-all-docs:focus-visible {
 	border-color: var(--settings-button-border-focus);
 }
 
@@ -1532,7 +1532,7 @@ details.toggle[open] > summary::before {
 	/* toggle minus */
 	background: url('data:image/svg+xml,<svg width="17" height="17" \
 shape-rendering="crispEdges" stroke="black" fill="none" xmlns="http://www.w3.org/2000/svg"><path \
-d="M2.5 2.5h12v12h-12v-12.5" stroke="%23999"/><path d="M6 8.5h5"/></svg>') no-repeat top left;
+d="M2.5 2.5h12v12h-12v-12.5"/><path d="M6 8.5h5"/></svg>') no-repeat top left;
 }
 
 details.toggle[open] > summary::after {

src/librustdoc/html/static/css/themes/dark.css

@@ -99,3 +99,11 @@
 	--scrape-example-code-wrapper-background-start: rgba(53, 53, 53, 1);
 	--scrape-example-code-wrapper-background-end: rgba(53, 53, 53, 0);
 }
+
+/* Other themes give the toggle-all-docs button the same color as the rest of
+	the toolbar buttons. Dark theme makes it less bright and noticeable. */
+button#toggle-all-docs {
+	background-color: transparent;
+	border-color: grey;
+	color: #ddd;
+}

tests/rustdoc-gui/anchors.goml

@@ -103,7 +103,7 @@ call-function: (
         "main_heading_type_color": "#2dbfb8",
         "src_link_color": "#d2991d",
         "sidebar_link_color": "#fdbf35",
-        "button_color": "#000",
+        "button_color": "#ddd",
     },
 )
 call-function: (