scss ➡️ vanilla css (#727)

* scss isn't worth the technical/mental overhead anymore

* try to translate my old Hugo pygments themes

* update lockfile

* consolidate .hljs classes

components/page-header/Menu.module.css

@@ -0,0 +1,67 @@
+.menu {
+  list-style: none;
+  display: flex;
+  align-items: center;
+  margin: 0;
+  padding: 0;
+}
+
+.item {
+  margin-left: 1.8em;
+  display: inline-flex;
+}
+
+.item .link {
+  display: inline-flex;
+  align-items: center;
+  color: var(--medium-dark);
+  background: none;
+  padding-bottom: 0;
+}
+
+.item .link:hover {
+  color: var(--link);
+}
+
+.item .icon {
+  width: 1.6em;
+  height: 1.6em;
+}
+
+.item .text {
+  font-size: 0.95em;
+  font-weight: 500;
+  margin-top: 0.125em;
+  margin-left: 0.75em;
+}
+
+.theme_toggle {
+  margin-left: 1.25em;
+}
+
+@media screen and (max-width: 768px) {
+  .menu {
+    max-width: 320px;
+    margin-left: 20px;
+    justify-content: space-between;
+    flex-grow: 1;
+  }
+
+  .item {
+    margin-left: 0;
+  }
+
+  .item .icon {
+    width: 1.8em;
+    height: 1.8em;
+  }
+
+  /* hide text next to emojis on mobile */
+  .item .text {
+    display: none;
+  }
+
+  .theme_toggle {
+    margin-left: -0.3em;
+  }
+}