Add dark mode support

This commit checks out cgit.css from commit
8ed1bef90f631989c0cadc326a163b874a64e02d (metadata reproduced below)

	From: Samuel Lidén Borell <samuel@kodafritt.se>
	Date: Sun, 29 Jan 2023 17:55:29 +0100
	Subject: css: Support for dark mode
	MIME-Version: 1.0
	Content-Type: text/plain; charset=UTF-8
	Content-Transfer-Encoding: 8bit

	Modern browsers have a "dark mode" preference, which enables alternate
	styles on web sites that support this.

	This patch adds a dark color scheme, that is automatically activated
	via a CSS @media query.

	Older browsers that do not support color schemes will simply show the
	light scheme, but possibly without syntax highlighting.

	Note that filters that use color (such as source highlighters) and
	logotypes may need to be updated to work with a black background!
	See the updated files in the filters/ directory.

	Signed-off-by: Samuel Lidén Borell <samuel@kodafritt.se>
	Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 159 insertions, 13 deletions

diff --git a/cgit.css b/cgit.css
index 1b848cf..76eb3f4 100644
--- a/cgit.css
+++ b/cgit.css
@@ -1,3 +1,5 @@
+@import url(source-code-pro/source-code-pro.css);
+
 div#cgit {
 	padding: 0em;
 	margin: 0em;
@@ -178,9 +180,12 @@ div#cgit table.list td {
 }
 
 div#cgit table.list td.commitgraph {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 }
+div#cgit pre {
+	font-family: "Source Code Pro", "Courier New", monospace;
+}
 
 div#cgit table.list td.commitgraph .column1 {
 	color: #a00;
@@ -207,12 +212,12 @@ div#cgit table.list td.commitgraph .column6 {
 }
 
 div#cgit table.list td.logsubject {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	font-weight: bold;
 }
 
 div#cgit table.list td.logmsg {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 	padding: 0 0.5em;
 }
@@ -281,17 +286,17 @@ div#cgit div.error {
 }
 
 div#cgit a.ls-blob, div#cgit a.ls-dir, div#cgit .ls-mod {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 }
 
 div#cgit td.ls-size {
 	text-align: right;
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	width: 10em;
 }
 
 div#cgit td.ls-mode {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	width: 10em;
 }
 
@@ -373,14 +378,14 @@ div#cgit table.bin-blob {
 }
 
 div#cgit table.bin-blob th {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 	border: solid 1px #777;
 	padding: 0.5em 1em;
 }
 
 div#cgit table.bin-blob td {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 	border-left: solid 1px #777;
 	padding: 0em 1em;
@@ -443,7 +448,7 @@ div#cgit div.commit-subject {
 
 div#cgit div.commit-msg {
 	white-space: pre;
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 }
 
 div#cgit div.notes-header {
@@ -453,7 +458,7 @@ div#cgit div.notes-header {
 
 div#cgit div.notes {
 	white-space: pre;
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	border: solid 1px #ee9;
 	background-color: #ffd;
 	padding: 0.3em 2em 0.3em 1em;
@@ -543,7 +548,7 @@ div#cgit table.diff {
 }
 
 div#cgit table.diff td {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 }
 
@@ -566,7 +571,7 @@ div#cgit table.diff td div.del {
 }
 
 div#cgit .oid {
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	font-size: 90%;
 }
 
@@ -805,7 +810,7 @@ div#cgit table.ssdiff {
 
 div#cgit table.ssdiff td {
 	font-size: 75%;
-	font-family: monospace;
+	font-family: "Source Code Pro", "Courier New", monospace;
 	white-space: pre;
 	padding: 1px 4px 1px 4px;
 	border-left: solid 1px #aaa;
@@ -897,3 +902,144 @@ div#cgit table.ssdiff td.space {
 div#cgit table.ssdiff td.space div {
 	min-height: 3em;
 }
+div#cgit span.libravatar img.onhover {
+        display: none;
+        border: 1px solid gray;
+        padding: 0px;
+        -webkit-border-radius: 4px;
+        -moz-border-radius: 4px;
+        border-radius: 4px;
+        width: 128px;
+        height: 128px;
+}
+
+div#cgit span.libravatar img.inline {
+        -webkit-border-radius: 3px;
+        -moz-border-radius: 3px;
+        border-radius: 3px;
+        width: 13px;
+        height: 13px;
+        margin-right: 0.2em;
+        opacity: 0.6;
+}
+
+div#cgit span.libravatar:hover > img.onhover {
+        display: block;
+        position: absolute;
+        margin-left: 1.5em;
+        background-color: #eeeeee;
+        box-shadow: 2px 2px 7px rgba(100,100,100,0.75);
+}
+
+/*
+   Color overrides for browsers running in dark mode.
+   "only all and ..." forces very old browsers to ignore the media query:
+   https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#improving_compatibility_with_older_browsers
+*/
+:root { color-scheme: light dark; }
+@media only all and (prefers-color-scheme: dark) {
+	html, div#cgit { color: #eee; background: #171717; }
+	div#cgit a { color: #3af; }
+	div#cgit .diffstat-header a { color: #28d; }
+	div#cgit table#header td.main a { color: #eee; }
+	div#cgit table#header td.sub { color: #999; }
+	div#cgit table.tabs { border-bottom-color: #444; }
+	div#cgit table.tabs td a { color: #888; }
+	div#cgit table.tabs td a.active { color: #fff; background-color: #444; }
+	div#cgit div.path { color: #eee; background-color: #333; }
+	div#cgit div.content { border-bottom-color: #bbb; }
+	div#cgit table.list tr { background: #171717; }
+	div#cgit table.list tr.logheader { background: #171717; }
+	div#cgit table.list tr:nth-child(even) { background: #171717; }
+	div#cgit table.list tr:nth-child(odd) { background: #1f1f1f; }
+	div#cgit table.list tr:hover { background: #333; }
+	div#cgit table.list tr.nohover { background: #171717; }
+	div#cgit table.list tr.nohover:hover { background: #171717; }
+	div#cgit table.list tr.nohover-highlight:hover:nth-child(even) { background: #171717; }
+	div#cgit table.list tr.nohover-highlight:hover:nth-child(odd) { background: #1f1f1f; }
+	div#cgit table.list td.commitgraph .column1 { color: #f55; }
+	div#cgit table.list td.commitgraph .column2 { color: #5f5; }
+	div#cgit table.list td.commitgraph .column3 { color: #ff5; }
+	div#cgit table.list td.commitgraph .column4 { color: #55f; }
+	div#cgit table.list td.commitgraph .column5 { color: #f5f; }
+	div#cgit table.list td.commitgraph .column6 { color: #5ff; }
+	div#cgit table.list td a { color: #eee; }
+	div#cgit table.list td a.ls-dir { color: #28d; }
+	div#cgit table.list td a:hover { color: #3af; }
+	div#cgit table#downloads { border-color: #888; }
+	div#cgit table#downloads th { background-color: #333; }
+	div#cgit div#blob { border-color: #eee; }
+	div#cgit table.blob { border-top-color: #eee; }
+	div#cgit table.blob td.hashes,
+	div#cgit table.blob td.lines { color: #eee; }
+	div#cgit table.blob td.linenumbers { border-right-color: gray; }
+	div#cgit table.blob td.linenumbers a,
+	div#cgit table.ssdiff td.lineno a { color: gray; }
+	div#cgit table.blob td.linenumbers a:hover,
+	div#cgit table.ssdiff td.lineno a:hover { color: #eee; }
+	div#cgit table.blame div.alt:nth-child(even) { background: #171717; }
+	div#cgit table.blame div.alt:nth-child(odd) { background: #1f1f1f; }
+	div#cgit table.bin-blob { border-color: #eee; }
+	div#cgit table.bin-blob th { border-color: #888; }
+	div#cgit table.bin-blob td { border-left-color: #888; }
+	div#cgit div.cgit-panel table { border-color: #555; background-color: #282828; }
+	div#cgit div.notes { border-color: #661; background-color: #220; }
+	div#cgit table.diffstat { border-color: #555; background-color: #282828; }
+	div#cgit table.diffstat td span.modechange { color: #c66; }
+	div#cgit table.diffstat td.add a { color: #6c6; }
+	div#cgit table.diffstat td.del a { color: #c66; }
+	div#cgit table.diffstat td.upd a { color: #3af; }
+	div#cgit table.diffstat td.graph td.add { background-color: #3a3; }
+	div#cgit table.diffstat td.graph td.rem { background-color: #a33; }
+	div#cgit div.diffstat-summary { color: #777; }
+	div#cgit table.diff td div.head { color: #eee; }
+	div#cgit table.diff td div.hunk { color: #28d; }
+	div#cgit table.diff td div.add { color: #6c6; }
+	div#cgit table.diff td div.del { color: #c66; }
+	div#cgit table.list td.reposection { color: #777; }
+	div#cgit ul.pager a { color: #888; }
+	div#cgit span.age-mins { color: #7f7; }
+	div#cgit span.age-hours { color: #7f7; }
+	div#cgit span.age-days { color: #9d9; }
+	div#cgit span.age-weeks { color: #bbb; }
+	div#cgit span.age-months { color: #888; }
+	div#cgit span.age-years { color: #666; }
+	div#cgit span.insertions { color: #7f7; }
+	div#cgit span.deletions { color: #e33; }
+	div#cgit div.footer { color: #555; }
+	div#cgit div.footer a { color: #555; }
+	div#cgit a.branch-deco { color: #fff; background-color: #361; border-color: #3b2; }
+	div#cgit a.tag-deco { color: #fff; background-color: #650; border-color: #ba3; }
+	div#cgit a.tag-annotated-deco { color: #fff; background-color: #840; border-color: #b96; }
+	div#cgit a.remote-deco { color: #fff; background-color: #348; border-color: #67c; }
+	div#cgit a.deco { color: #fff; background-color: #922; border-color: #d55; }
+	div#cgit a.branch-deco:hover, div#cgit table.list td a.branch-deco:hover,
+	div#cgit a.tag-deco:hover, div#cgit table.list td a.tag-deco:hover,
+	div#cgit a.tag-annotated-deco:hover, div#cgit table.list td a.tag-annotated-deco:hover,
+	div#cgit a.remote-deco:hover, div#cgit table.list td a.remote-deco:hover,
+	div#cgit a.deco:hover, div#cgit table.list td a.deco:hover { color: #fff; }
+	div#cgit table.stats { border-color: #555; }
+	div#cgit table.stats th { background-color: #333; border-color: #555; }
+	div#cgit table.stats td { border-color: #555; }
+	div#cgit table.stats td.sum { color: #5C7E9B; }
+	div#cgit table.vgraph { border-color: #eee; }
+	div#cgit table.vgraph th { background-color: #1f1f1f; border-color: black; }
+	div#cgit table.vgraph div.bar { background-color: #1f1f1f; }
+	div#cgit table.hgraph { border-color: #eee; }
+	div#cgit table.hgraph th { background-color: #1f1f1f; border-color: #eee; }
+	div#cgit table.hgraph div.bar { background-color: #1f1f1f; }
+	div#cgit table.ssdiff td { border-left-color: #555; border-right-color: #555; }
+	div#cgit table.ssdiff td.add { color: #eee; background: #353; }
+	div#cgit table.ssdiff td.add_dark { color: #eee; background: #030; }
+	div#cgit table.ssdiff span.add { background: #030; }
+	div#cgit table.ssdiff td.del { color: #eee; background: #533; }
+	div#cgit table.ssdiff td.del_dark { color: #eee; background: #411; }
+	div#cgit table.ssdiff span.del { background: #300; }
+	div#cgit table.ssdiff td.changed { color: #eee; background: #553; }
+	div#cgit table.ssdiff td.changed_dark { color: #eee; background: #330; }
+	div#cgit table.ssdiff td.lineno { color: #eee; background: #1f1f1f; }
+	div#cgit table.ssdiff td.hunk { color: #eee; background: #0D3D64; border-top-color: #555; border-bottom-color: #555; }
+	div#cgit table.ssdiff td.head { border-top-color: #555; border-bottom-color: #555; }
+	div#cgit table.ssdiff td.head div.head { color: #eee; }
+	div#cgit table.ssdiff td.foot { border-top-color: #555; }
+}