Underline links on hover, svg logo with dark theme.

_config.yml

@@ -3,7 +3,7 @@
 
 title: Introduction to particle and continuum physics
 author: Timon Idema
-logo: content/images/tudelft.svg
+logo: content/images/TUDelft2.svg
 description: Introduction-level physics book covering classical mechanics (forces, energy, momentum, angular momentum), oscillations, waves, elementary continuum mechanics (elasticity and fluids) and thermodynamics.
 copyright: Delft University of Technology, CC BY 4.0
 
@@ -58,10 +58,11 @@ sphinx:
 #    bibtex_reference_style: unsrt
 #  local_extensions: # For the applet inclusion.
 #    applet: _ext/
-    html_theme_options:
-        logo:
-            image_light: content/images/TUDelft.svg
-            image_dark: content/images/TUDelft-dark.svg
+# Following somehow breaks repo link; supersede by light/dark svg logo.
+#    html_theme_options:
+#        logo:
+#            image_light: content/images/TUDelft.svg
+#            image_dark: content/images/TUDelft-dark.svg
   extra_extensions:
     - sphinx_proof
     - sphinx_exercise
@@ -79,22 +80,23 @@ parse:
     - amsmath
     - dollarmath
 
+# Information about where the book exists on the web
+repository:
+  url: https://gitlab.tudelft.nl/opentextbooks/NB1140/  # Online location of your book
+  # path_to_book: docs  # Optional path to your book, relative to the repository root
+ # branch: main  # Which branch of the repository should be used when creating links (optional)
+
 # HTML specific settings - see https://jupyterbook.org/en/stable/customize/config.html
 # Add GitHub / GitLab buttons to your book
 # See https://jupyterbook.org/customize/config.html#add-a-link-to-your-repository
 html:
   favicon: "content/images/favicon.ico"
-  home_page_in_navbar: true
-  use_issues_button: true
+  #use_issues_button: true
   use_edit_page_button: true
   use_repository_button: true
+  #home_page_in_navbar: true
   extra_navbar: "" # Will be displayed underneath the left navbar. This setting overrides the default 'powered by Jupyter Book'
   comments:
     hypothesis: false
     #hypothesis: true # Hypothesis for comments
 
-# Information about where the book exists on the web
-repository:
-  url: https://gitlab.tudelft.nl/opentextbooks/NB1140/  # Online location of your book
-  # path_to_book: docs  # Optional path to your book, relative to the repository root
-  branch: main  # Which branch of the repository should be used when creating links (optional)

_static/TI.css

@@ -15,4 +15,8 @@ div.exercise p.admonition-title::before {
 /* Remove the underline from internal links. */
 a.internal, a.footnote-reference {
     text-decoration: none;
-}
\ No newline at end of file
+}
+
+a.internal:hover, a.footnote-reference:hover {
+    text-decoration-line: underline;
+}

content/images/TUDelft2.svg

+<?xml version="1.0" encoding="UTF-8"?>
+<svg id="Layer_2" data-name="Layer 2" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 110 55">
+  <defs>
+    <style>
+      .cls-1 {
+        fill: none;
+      }
+
+      .cls-1, .cls-2, .cls-3 {
+        stroke-width: 0px;
+      }
+
+      .cls-3 {
+        fill: #00aeef;
+      }
+
+      @media (prefers-color-scheme:dark) {
+        .cls-2 {
+          fill: #f2f2f2;
+        }
+      }
+
+    </style>
+  </defs>
+  <g id="logo">
+    <rect class="cls-1" width="110" height="55"/>
+    <path class="cls-3" d="m33.39,39.52c2.49,0,3.85-1.66,3.85-3.98v-11.84h5.3v12.11c-.05,5.33-4.32,7.42-9.15,7.42s-9.09-2.09-9.15-7.42v-12.11h5.3v11.84c0,2.32,1.35,3.98,3.85,3.98Z"/>
+    <polygon class="cls-2" points="10.51 42.83 15.81 42.83 15.81 27.41 21.74 27.41 21.74 23.7 4.57 23.7 4.57 27.41 10.51 27.41 10.51 42.83"/>
+    <path class="cls-2" d="m23.24,14.38c-1.29.41-2.63.08-2.62-1.65,0-2.64,6.19-4.85,7.05-7.15.21-.57.23-1.05-.05-1.03-.2.01-.04.3-.48.73-2.56,2.57-6.86,2.56-10.16,4.04-2.16.97-8.5,3.95-7.04,10.6.07.32.26,1.37.45,1.37.22,0,.22-.63.22-1.39-.05-3.96,4.64-5.06,6.17-7.65.18-.31.5-.74.57-.54.04.1.01.24-.05.52-.48,2.13-2.7,3.49-2.07,5.01.82,1.97,3.17.5,3.9-.77.19-.35.3-.57.43-.53.1.03.09.43.03.8-.39,2.29-.91,3.57-2.59,4.88-.54.42-1.38.5-1.27.82.03.08.39.07.68.04,4.46-.29,8.19-5.54,9.18-8.98.1-.24.13-.47.03-.55-.13-.1-.33.13-.53.31-.51.45-1.21.91-1.85,1.12Z"/>
+    <path class="cls-2" d="m68.51,34.91c.02-2.08,1.27-3.95,3.37-3.95,2.44,0,3.39,1.67,3.39,3.95h-6.76Zm9.41,1.75v-1.25c0-3.68-2.09-6.28-5.86-6.28-4.21,0-6.18,3.26-6.18,7.16s1.7,6.95,5.97,6.95c3.18,0,5.51-1.51,5.91-4.53h-2.65c-.29,1.93-1.27,2.7-3.23,2.7-2.57,0-3.43-2.29-3.43-4.74h9.47Z"/>
+    <rect class="cls-2" x="80.97" y="23.7" width="2.52" height="19.13"/>
+    <path class="cls-2" d="m91.39,42.83v-11.55h3.07v-1.75h-3.07v-2.15c0-1.54.74-1.8,2.17-1.8.42,0,.85.05,1.27.08v-2.09c-.59-.13-1.19-.27-1.8-.27-2.38,0-4.16,1.2-4.16,3.74v2.49h-2.6v1.75h2.6v11.55h2.52Z"/>
+    <path class="cls-2" d="m95.91,29.53v1.75h2.28v8.48c0,1.77.03,3.47,3.77,3.47.58,0,1.13-.05,1.72-.16v-1.93c-.41.1-.93.16-1.33.16-.9,0-1.64-.45-1.64-1.4v-8.61h3.07v-1.75h-3.07v-3.63l-2.52.79v2.84h-2.28Z"/>
+    <path class="cls-2" d="m47.83,42.83h6.57c8.18,0,9.04-6.93,9.04-9.57s-.86-9.57-9.04-9.57h-6.57v19.13Zm2.65-16.86h3.92c4.42,0,6.26,3.34,6.26,7.29s-1.84,7.29-6.26,7.29h-3.92v-14.58Z"/>
+  </g>
+</svg>
\ No newline at end of file