add dark mode

docsrc/_static/css/rtd-dark.css

@@ -0,0 +1,114 @@
+/*!
+ * @name          Readthedocs
+ * @namespace     http://userstyles.org
+ * @description	  Styles the documentation pages hosted on Readthedocs.io
+ * @author        Anthony Post
+ * @homepage      https://userstyles.org/styles/142968
+ * @version       0.20170529055029
+ *
+ * Modified by Aloïs Dreyfus: 20200527-1037
+ * Modified by Erik Kalkoken: 20220615
+ */
+
+@media (prefers-color-scheme: dark) {
+  a:visited {
+    color: #bf84d8;
+  }
+
+  pre {
+    background-color: #2d2d2d !important;
+  }
+
+  .wy-nav-content {
+    background: #3c3c3c;
+    color: aliceblue;
+  }
+
+  .method dt, .class dt, .data dt, .attribute dt, .function dt,
+  .descclassname, .descname {
+    background-color: #525252 !important;
+    color: white !important;
+  }
+
+  .toc-backref {
+    color: grey !important;
+  }
+
+  code.literal {
+    background-color: #2d2d2d !important;
+    border: 1px solid #6d6d6d !important;
+  }
+
+  .wy-nav-content-wrap {
+    background-color: rgba(0, 0, 0, 0.6) !important;
+  }
+
+  .sidebar {
+    background-color: #191919 !important;
+  }
+
+  .sidebar-title {
+    background-color: #2b2b2b !important;
+  }
+
+  .xref, .py-meth {
+    color: #7ec3e6 !important;
+  }
+
+  .admonition, .note {
+    background-color: #2d2d2d !important;
+  }
+
+  .wy-side-nav-search {
+    background-color: inherit;
+    border-bottom: 1px solid #fcfcfc;
+  }
+
+  .wy-table thead, .rst-content table.docutils thead, .rst-content table.field-list thead {
+    background-color: #b9b9b9;
+  }
+
+  .wy-table thead th, .rst-content table.docutils thead th, .rst-content table.field-list thead th {
+    border: solid 2px #e1e4e5;
+  }
+
+  .wy-table thead p, .rst-content table.docutils thead p, .rst-content table.field-list thead p {
+    margin: 0;
+  }
+
+  .wy-table-odd td, .wy-table-striped tr:nth-child(2n-1) td, .rst-content table.docutils:not(.field-list) tr:nth-child(2n-1) td {
+    background-color: #343131;
+  }
+
+  .highlight .m {
+    color: inherit
+  }
+
+  /* Literal.Number */
+  .highlight .nv {
+    color: #3a7ca8
+  }
+
+  /* Name.Variable */
+
+  body {
+    text-align: justify;
+  }
+
+  .rst-content .section .admonition ul {
+    margin-bottom: 0;
+  }
+
+  li.toctree-l1 {
+    margin-top: 5px;
+    margin-bottom: 5px;
+  }
+
+  .wy-menu-vertical li code {
+    color: #E74C3C;
+  }
+
+  .wy-menu-vertical .xref {
+    color: #2980B9 !important;
+  }
+}

docsrc/conf.py

@@ -28,6 +28,8 @@
 
 html_theme = 'sphinx_rtd_theme'
 
+html_css_files = [ "css/rtd-dark.css" ]
+
 html_theme_options = {
     #  'logo': 'logo.png',
     #  'logo_name': True,