dark theme, better url and date formats

themes/default/static/css/main.css

@@ -77,17 +77,17 @@ hr {
     height: 1px
 }
 
-a {
-    color: #00f;
-    word-wrap: break-word
+a, a:visited, a:hover {
+    color: #007bff;
+    word-wrap: break-word;
 }
 
-a:visited {
-    color: #009
+a, a:visited {
+    text-decoration: none;
 }
 
 a:hover {
-    color: #f80;
+    text-decoration: underline;
 }
 
 header a,
@@ -316,3 +316,28 @@ nav#TableOfContents ul {
         content: '';
     }
 }
+
+@media (prefers-color-scheme: dark) {
+    body {
+        color: #ccc;
+        background-color: #222;
+    }
+    header a,
+    header a:visited,
+    footer a,
+    footer a:visited,
+    h1 a,
+    h1 a:visited,
+    h2 a,
+    h2 a:visited,
+    h3 a,
+    h3 a:visited,
+    h4 a,
+    h4 a:visited,
+    h5 a,
+    h5 a:visited,
+    h6 a,
+    h6 a:visited {
+        color: #ccc;
+    }
+}