Add highlighter

docs/index.css

@@ -78,3 +78,42 @@ h2 {
 h3 {
     font-size: 25px;
 }
+
+/* Syntax highlighting styles for Solstice */
+.comment {
+    color: #6c757d;
+    font-style: italic;
+}
+
+.string {
+    color: #98c379;
+}
+
+.number {
+    color: #d19a66;
+}
+
+.keyword {
+    color: #c678dd;
+    font-weight: bold;
+}
+
+.builtin {
+    color: #61afef;
+}
+
+.type {
+    color: #e5c07b;
+}
+
+.boolean {
+    color: #d19a66;
+}
+
+.operator {
+    color: #56b6c2;
+}
+
+.function {
+    color: #61afef;
+}