Implement most of the remaining layout changes

Includes the mobile UX optimizations and the tweaks we've made to cut down on wasted space, but does not yet include the change to embed the spotlight tile within the grid.

src/room/VideoPreview.tsx

@@ -21,13 +21,11 @@ import { usePreviewTracks } from "@livekit/components-react";
 import { LocalVideoTrack, Track } from "livekit-client";
 import classNames from "classnames";
 import { logger } from "matrix-js-sdk/src/logger";
-import { Glass } from "@vector-im/compound-web";
 
 import { Avatar } from "../Avatar";
 import styles from "./VideoPreview.module.css";
 import { useMediaDevices } from "../livekit/MediaDevicesContext";
 import { MuteStates } from "./MuteStates";
-import { useMediaQuery } from "../useMediaQuery";
 import { useInitial } from "../useInitial";
 import { EncryptionSystem } from "../e2ee/sharedKeyManagement";
 
@@ -116,8 +114,8 @@ export const VideoPreview: FC<Props> = ({
     };
   }, [videoTrack]);
 
-  const content = (
-    <>
+  return (
+    <div className={classNames(styles.preview)} ref={previewRef}>
       <video
         ref={videoEl}
         muted
@@ -137,21 +135,6 @@ export const VideoPreview: FC<Props> = ({
         </div>
       )}
       <div className={styles.buttonBar}>{children}</div>
-    </>
-  );
-
-  return useMediaQuery("(max-width: 550px)") ? (
-    <div
-      className={classNames(styles.preview, styles.content)}
-      ref={previewRef}
-    >
-      {content}
     </div>
-  ) : (
-    <Glass className={styles.preview}>
-      <div className={styles.content} ref={previewRef}>
-        {content}
-      </div>
-    </Glass>
   );
 };