diff --git a/README.md b/README.md
index 46abf01..8a29cc8 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 CYP is a web-based frontend for [MPD](https://www.musicpd.org/), the Music Player Daemon. You can use it to control the playback without having to install native application(s). It works in modern web browsers, both desktop and mobile.
 
+
 ## Features
   - Control the playback, queue, volume
   - Save and load playlists
@@ -9,6 +10,7 @@ CYP is a web-based frontend for [MPD](https://www.musicpd.org/), the Music Playe
   - Display album art via native MPD calls (no need to access the library; requires MPD >= 0.21)
   - [Youtube-dl](https://ytdl-org.github.io/youtube-dl/index.html) intergration
 
+
 ## Installation
 
 Make sure you have a working MPD setup first.
@@ -21,16 +23,21 @@ node .
 
 Point your browser to http://localhost:8080 to open the interface.
 
+
 ## Technology
   - Connected to MPD via WebSockets (using the [ws2mpd](https://github.com/ondras/ws2mpd/) bridge)
+  - Token-based access to the WebSocket endpoint (better than an `Origin` check)
   - Modern ES6+ (modules, async/await)
   - Responsive layout via Flexbox
+  - CSS Custom Properties
   - SVG icons (Material Design)
   - Dark/Light theme available
-  - Album art downloaded directly from MPD (and cached via localStorage)
+  - Can spawn Youtube-dl to download audio files
+  - Album art retrieved directly from MPD (and cached via localStorage)
 
 
 ## TODO
 
   - [ ] Bundling
   - [ ] Range styling
+  - [ ] Browser testing
diff --git a/app/app.css b/app/app.css
index d1db4f9..0487480 100644
--- a/app/app.css
+++ b/app/app.css
@@ -14,15 +14,16 @@ body {
   line-height: 1.25;
   background-color: var(--bg);
   color: var(--fg);
-  text-shadow: var(--shadow);
+  text-shadow: var(--text-shadow);
   max-width: 800px;
   margin: 0 auto;
   overflow: hidden;
   height: 100vh;
 }
-body > header,
-body > footer {
-  box-shadow: 0 0 3px #000;
+header,
+footer {
+  z-index: 1;
+  box-shadow: var(--box-shadow);
 }
 input,
 select,
@@ -280,7 +281,7 @@ nav ul li.active {
 .component li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 .component li .info h2 {
   font-size: var(--font-size-large);
@@ -339,7 +340,7 @@ nav ul li.active {
 #queue li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #queue li .info h2 {
   font-size: var(--font-size-large);
@@ -401,7 +402,7 @@ nav ul li.active {
 #library li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #library li .info h2 {
   font-size: var(--font-size-large);
@@ -436,7 +437,7 @@ nav ul li.active {
   width: 64px;
 }
 #library .art .icon {
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #library .group {
   cursor: pointer;
@@ -497,7 +498,7 @@ nav ul li.active {
 #fs li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #fs li .info h2 {
   font-size: var(--font-size-large);
@@ -576,7 +577,7 @@ nav ul li.active {
 #playlists li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #playlists li .info h2 {
   font-size: var(--font-size-large);
@@ -643,7 +644,7 @@ nav ul li.active {
 #yt li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
-  filter: drop-shadow(var(--shadow));
+  filter: drop-shadow(var(--text-shadow));
 }
 #yt li .info h2 {
   font-size: var(--font-size-large);
@@ -759,18 +760,19 @@ nav ul li.active {
   --icon-spacing: 4px;
   --primary: rgb(var(--primary-raw));
   --spacing: 8px;
+  --box-shadow: 0 0 3px #000;
 }
 :root[data-theme=light] {
   --fg: #333;
   --bg: #f0f0f0;
   --bg-alt: #e0e0e0;
-  --shadow: none;
+  --text-shadow: none;
 }
 :root[data-theme=dark] {
   --fg: #f0f0f0;
   --bg: #333;
   --bg-alt: #555;
-  --shadow: 0 1px 1px rgba(0, 0, 0, 0.8);
+  --text-shadow: 0 1px 1px rgba(0, 0, 0, 0.8);
 }
 :root[data-color=dodgerblue] {
   --primary-raw: 30, 144, 255;
diff --git a/app/css/app.less b/app/css/app.less
index dabf7e5..ec1b377 100644
--- a/app/css/app.less
+++ b/app/css/app.less
@@ -12,15 +12,16 @@ body {
 	line-height: 1.25;
 	background-color: var(--bg);
 	color: var(--fg);
-	text-shadow: var(--shadow);
+	text-shadow: var(--text-shadow);
 	max-width: 800px;
 	margin: 0 auto;
 	overflow: hidden;
 	height: 100vh;
+}
 
-	> header, > footer {
-		box-shadow: 0 0 3px #000;
-	}
+header, footer {
+	z-index: 1;
+	box-shadow: var(--box-shadow);
 }
 
 input, select, button {
diff --git a/app/css/component.less b/app/css/component.less
index 6ce48be..363dc79 100644
--- a/app/css/component.less
+++ b/app/css/component.less
@@ -33,7 +33,7 @@
 			.icon {
 				color: var(--primary);
 				margin-right: var(--icon-spacing);
-				filter: drop-shadow(var(--shadow));
+				filter: drop-shadow(var(--text-shadow));
 			}
 
 			h2 {
diff --git a/app/css/library.less b/app/css/library.less
index 1212899..38c6461 100644
--- a/app/css/library.less
+++ b/app/css/library.less
@@ -15,7 +15,7 @@
 	}
 
 	.art .icon {
-		filter: drop-shadow(var(--shadow));
+		filter: drop-shadow(var(--text-shadow));
 	}
 
 	.group {
diff --git a/app/css/variables.less b/app/css/variables.less
index df28b38..c15c662 100644
--- a/app/css/variables.less
+++ b/app/css/variables.less
@@ -3,20 +3,21 @@
 	--icon-spacing: 4px;
 	--primary: rgb(var(--primary-raw));
 	--spacing: 8px;
+	--box-shadow: 0 0 3px #000;
 }
 
 :root[data-theme=light] {
 	--fg: #333;
 	--bg: #f0f0f0;
 	--bg-alt: #e0e0e0;
-	--shadow: none;
+	--text-shadow: none;
 }
 
 :root[data-theme=dark] {
 	--fg: #f0f0f0;
 	--bg: #333;
 	--bg-alt: #555;
-	--shadow: 0 1px 1px rgba(0, 0, 0, 0.8);
+	--text-shadow: 0 1px 1px rgba(0, 0, 0, 0.8);
 }
 
 :root[data-color=dodgerblue] {