diff --git a/src/theme/index.css b/src/theme/index.css
new file mode 100644
index 0000000..6861f0c
--- /dev/null
+++ b/src/theme/index.css
@@ -0,0 +1,313 @@
+@import "./variables";
+@import url("https://fonts.googleapis.com/css2?family=Anaheim:wght@400..800&family=Overpass+Mono:wght@300..700&display=swap");
+
+
+body {
+	background: var(--background);
+}
+
+section.has-dark-background, h1, h2, h3, h4, h5, h6 {
+	color: var(--main-color);
+}
+
+.reveal-viewport {
+	background: var(--background);
+	background-color: var(--background-color);
+}
+
+.reveal {
+	font-family: var(--main-font);
+	font-size: var(--main-font-size);
+	font-weight: normal;
+	color: var(--main-color);
+}
+
+.reveal ::selection {
+	color: var(--selection-color);
+	background: var(--selection-background-color);
+	text-shadow: none;
+}
+
+.reveal ::-moz-selection {
+	color: var(--selection-color);
+	background: var(--selection-background-color);
+	text-shadow: none;
+}
+
+.reveal .slides section,
+.reveal .slides section > section {
+	line-height: 1.3;
+	font-weight: inherit;
+}
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+
+.reveal :is(h1, h2, h3, h4, h5, h6) {
+	margin: var(--heading-margin);
+	color: var(--heading-color);
+
+	font-family: var(--heading-font);
+	font-weight: var(--heading-font-weight);
+	line-height: var(--heading-line-height);
+	letter-spacing: var(--heading-letter-spacing);
+
+	text-transform: var(--heading-text-transform);
+	text-shadow: var(--heading-text-shadow);
+
+	word-wrap: break-word;
+}
+
+.reveal h1 {
+	font-size: var(--heading1-size);
+}
+.reveal h2 {
+	font-size: var(--heading2-size);
+}
+.reveal h3 {
+	font-size: var(--heading3-size);
+}
+.reveal h4 {
+	font-size: var(--heading4-size);
+}
+
+.reveal h1 {
+	text-shadow: var(--heading1-text-shadow);
+}
+
+/*********************************************
+ * OTHER
+ *********************************************/
+
+.reveal p {
+	margin: var(--block-margin) 0;
+	line-height: 1.3;
+}
+
+/* Remove trailing margins after titles */
+.reveal :is(h1, h2, h3, h4, h5, h6):last-child {
+	margin-bottom: 0;
+}
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal :is(img, video, iframe) {
+	max-width: 95%;
+	max-height: 95%;
+}
+.reveal :is(strong, b) {
+	font-weight: bold;
+}
+
+.reveal em {
+	font-style: italic;
+}
+
+.reveal :is(ol, dl, ul) {
+	display: inline-block;
+	text-align: left;
+	margin: 0 0 0 1em;
+}
+
+.reveal ol {
+	list-style-type: decimal;
+}
+
+.reveal ul {
+	list-style-type: disc;
+}
+
+.reveal ul ul {
+	list-style-type: square;
+}
+
+.reveal ul ul ul {
+	list-style-type: circle;
+}
+
+.reveal :is(ul ul, ul ol, ol ol, ol ul) {
+	display: block;
+	margin-left: 40px;
+}
+
+.reveal dt {
+	font-weight: bold;
+}
+
+.reveal dd {
+	margin-left: 40px;
+}
+
+.reveal blockquote {
+	display: block;
+	position: relative;
+	width: 70%;
+	margin: var(--block-margin) auto;
+	padding: 5px;
+
+	font-style: italic;
+	background: rgba(255, 255, 255, 0.05);
+	box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2);
+}
+.reveal blockquote :is(p:first-child, p:last-child) {
+	display: inline-block;
+}
+
+.reveal q {
+	font-style: italic;
+}
+
+.reveal pre {
+	display: block;
+	position: relative;
+	width: 90%;
+	margin: var(--block-margin) auto;
+
+	text-align: left;
+	font-size: 0.55em;
+	font-family: var(--code-font);
+	line-height: 1.2em;
+
+	word-wrap: break-word;
+
+	box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15);
+}
+
+.reveal code {
+	font-family: var(--code-font);
+	text-transform: none;
+	tab-size: 2;
+}
+
+.reveal pre code {
+	display: block;
+	padding: 5px;
+	overflow: auto;
+	max-height: 400px;
+	word-wrap: normal;
+}
+
+.reveal .code-wrapper {
+	white-space: normal;
+}
+
+.reveal .code-wrapper code {
+	white-space: pre;
+}
+
+.reveal table {
+	margin: auto;
+	border-collapse: collapse;
+	border-spacing: 0;
+}
+
+.reveal table th {
+	font-weight: bold;
+}
+
+.reveal table :is(th, td) {
+	text-align: left;
+	padding: 0.2em 0.5em 0.2em 0.5em;
+	border-bottom: 1px solid;
+}
+
+.reveal table :is(th[align='center'], td[align='center']) {
+	text-align: center;
+}
+
+.reveal table :is(th[align='right'], td[align='right']) {
+	text-align: right;
+}
+
+.reveal table tbody tr:last-child :is(th, td) {
+	border-bottom: none;
+}
+
+.reveal sup {
+	vertical-align: super;
+	font-size: smaller;
+}
+.reveal sub {
+	vertical-align: sub;
+	font-size: smaller;
+}
+
+.reveal small {
+	display: inline-block;
+	font-size: 0.6em;
+	line-height: 1.2em;
+	vertical-align: top;
+}
+
+.reveal small * {
+	vertical-align: top;
+}
+
+.reveal img {
+	margin: var(--block-margin) 0;
+}
+
+/*********************************************
+ * LINKS
+ *********************************************/
+
+.reveal a {
+	color: var(--link-color);
+	text-decoration: none;
+	transition: color 0.15s ease;
+}
+.reveal a:hover {
+	color: var(--link-colohover);
+	text-shadow: none;
+	border: none;
+}
+
+.reveal .roll span:after {
+	color: #fff;
+
+	background: var(--link-colodark);
+}
+
+/*********************************************
+ * Frame helper
+ *********************************************/
+
+.reveal .frame {
+	border: 4px solid var(--main-color);
+	box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
+}
+
+.reveal a .frame {
+	transition: all 0.15s linear;
+}
+
+.reveal a:hover .frame {
+	border-color: var(--link-color);
+	box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+}
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+
+.reveal .controls {
+	color: var(--link-color);
+}
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+
+.reveal .progress {
+	background: rgba(0, 0, 0, 0.2);
+	color: var(--link-color);
+}
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+	.backgrounds {
+		background-color: var(--background-color);
+	}
+}
diff --git a/src/theme/variables.css b/src/theme/variables.css
new file mode 100644
index 0000000..2ea8184
--- /dev/null
+++ b/src/theme/variables.css
@@ -0,0 +1,37 @@
+:root {
+	--background: #000;
+	--background-color: #bbb;
+
+	--main-font: "Anaheim", sans-serif;
+	--main-font-size: 40px;
+	--main-color: #eee;
+
+	--block-margin: 20px;
+
+	--heading-margin: 0 0 20px 0;
+	--heading-font: "Overpass Mono", monospace;
+	--heading-color: #fff;
+	--heading-line-height: 1.2;
+	--heading-letter-spacing: normal;
+	--heading-text-transform: none;
+	--heading-text-shadow: #aaa;
+	--heading-font-weight: 800;
+	--heading1-text-shadow: #aaa;
+
+	--heading1-size: 3.77em;
+	--heading2-size: 3.5rem;
+	--heading3-size: 1.55em;
+	--heading4-size: 1em;
+
+	--code-font: monospace;
+
+	--link-color: #aaaaff;
+	--link-color-dark: color.scale(#aaaaff, $lightness: -15%);
+	--link-color-hover: color.scale(#aaaaff, $lightness: 20%);
+
+	--selection-background-color: #888;
+	--selection-color: #fff;
+
+	--overlay-element-bg-color: 0, 0, 0;
+	--overlay-element-fg-color: 240, 240, 240;
+}
diff --git a/src/themes/hnrq.scss b/src/themes/hnrq.scss
deleted file mode 100644
index 36e687f..0000000
--- a/src/themes/hnrq.scss
+++ /dev/null
@@ -1,36 +0,0 @@
-// Default mixins and settings -----------------
-@use "sass:color";
-@import "reveal.js/css/theme/template/mixins";
-@import "reveal.js/css/theme/template/settings";
-// ---------------------------------------------
-
-// Include theme-specific fonts
-@import url("https://fonts.googleapis.com/css2?family=Anaheim:wght@400..800&family=Overpass+Mono:wght@300..700&display=swap");
-
-$mainColor: #fff;
-$headingColor: $mainColor;
-$headingTextShadow: #aaa;
-$backgroundColor: #000;
-$linkColor: #aaaaff;
-$linkColorHover: color.scale($linkColor, $lightness: 20%);
-$selectionBackgroundColor: #888;
-
-$overlayElementBgColor: 0, 0, 0;
-$overlayElementFgColor: 240, 240, 240;
-$headingFont: "Overpass Mono", monospace;
-$heading2Size: 3.5rem;
-$headingFontWeight: 800;
-$headingTextTransform: none;
-$mainFont: "Anaheim", sans-serif;
-
-// Background generator
-@mixin bodyBackground() {
-  background: $backgroundColor;
-}
-
-// Change text colors against dark slide backgrounds
-@include dark-bg-text-color($backgroundColor);
-
-// Theme template ------------------------------
-@import "reveal.js/css/theme/template/theme";
-// ---------------------------------------------