Implement new lobby design

src/room/VideoPreview.module.css

@@ -15,21 +15,29 @@ limitations under the License.
 */
 
 .preview {
-  position: relative;
-  min-height: 280px;
-  height: 50vh;
-  border-radius: 24px;
-  overflow: hidden;
-  background-color: var(--stopgap-bgColor3);
-  margin: 20px;
+  margin-inline: var(--inline-content-inset);
+  min-block-size: 0;
+  block-size: 50vh;
 }
 
-.preview video {
+.preview.content {
+  margin-inline: 0;
+}
+
+.content {
+  position: relative;
+  block-size: 100%;
+  inline-size: 100%;
+  overflow: hidden;
+}
+
+.content video {
   width: 100%;
   height: 100%;
-  object-fit: contain;
+  object-fit: cover;
   background-color: black;
   transform: scaleX(-1);
+  background-color: var(--cpd-color-bg-subtle-primary);
 }
 
 .avatarContainer {
@@ -41,40 +49,32 @@ limitations under the License.
   display: flex;
   justify-content: center;
   align-items: center;
-  background-color: var(--stopgap-bgColor3);
+  background-color: var(--cpd-color-bg-subtle-secondary);
 }
 
-.cameraPermissions {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  transform: translate(-50%, -50%);
-  margin: 0;
-  text-align: center;
-}
-
-.previewButtons {
+.buttonBar {
   position: absolute;
   bottom: 0;
   left: 0;
   right: 0;
-  height: 66px;
+  height: calc(30 * var(--cpd-space-1x));
   display: flex;
   justify-content: center;
   align-items: center;
-  background-color: var(--stopgap-background-85);
+  gap: var(--cpd-space-4x);
+  background: linear-gradient(
+    180deg,
+    rgba(0, 0, 0, 0) 0%,
+    var(--cpd-color-bg-canvas-default) 100%
+  );
 }
 
-.previewButtons > * {
-  margin-right: 30px;
+.preview.content .buttonBar {
+  padding-inline: var(--inline-content-inset);
 }
 
-.previewButtons > :last-child {
-  margin-right: 0px;
-}
-
-@media (min-width: 800px) {
-  .preview {
-    margin-top: 40px;
+@media (min-aspect-ratio: 1 / 1) {
+  .preview video {
+    aspect-ratio: 16 / 9;
   }
 }