Fix unnecessary scrollbar on compose drawer

Performs some baseline tweaks to the mastodon application scss that are
shared between all the cybrespace themes

app/javascript/styles/cybre-base.scss

@@ -0,0 +1,72 @@
+
+@import 'application';
+
+/* Allow columns to grow wider as the screen gets 
+ * wider, but don't ever let them get more than
+ * 400px (some people have a bunch of columns!) */
+@media screen and (min-width: 1300px) {
+  .column {
+    flex-grow: 1 !important;
+    max-width: 400px;
+  }
+
+  .drawer {
+    width: 17%; /* Not part of the flex fun */
+    max-width: 400px;
+    min-width: 330px;
+  }
+}
+
+/* Cap the column height at 100vh (fixed an old
+ * bug someone encountered in safari, but which
+ * I've seen resurface from time to time) */
+.column {
+  max-height:100vh;
+}
+
+/* Don't show outline around statuses if we're in 
+ * mouse or touch mode (rather than keyboard) */
+[data-whatinput="mouse"], [data-whatinput="touch"] {
+  .status__content:focus, .status:focus,
+  .status__wrapper:focus, .status__content__text:focus {
+    outline: none;
+  }
+}
+
+/* Show a little arrowey thing after the time in a
+ * status to signal that you can click it to see
+ * a detailed view */
+.status time:after,
+.detailed-status__datetime span:after {
+  font: normal normal normal 14px/1 FontAwesome;
+  content: "\00a0\00a0\f08e";
+}
+
+/* Don't display the elephant mascot (we have our
+ * own, thanks) */
+.drawer__inner__mastodon {
+  display: none;
+}
+
+/* Let the compose area/drawer be short, but
+ * expand if necessary */
+.drawer .drawer__inner {
+  overflow: visible;
+  height:inherit;
+  background-image: none;
+}
+.drawer__pager {
+  overflow-y:auto;
+}
+
+/* Use display: none instead of visibility:hidden 
+ * to hide the suggested follows list on non-mobile */
+@media screen and (min-width: 630px) {
+  .search-results .trends {
+     display:none;
+  }
+}
+
+
+@import 'fullwidth-media';
+

app/javascript/styles/fullwidth-media.scss

@@ -0,0 +1,53 @@
+
+/* Use 100% of the viewport width always*/
+.detailed-status > .media-spoiler,
+.status > .media-spoiler,
+.status .video-player,
+.media-gallery,
+.status .status-card {
+  margin-top:20px;
+  margin-left:-68px;
+  width: calc(100% + 80px);
+}
+
+/* Unset max-width for spoilers and the video player */
+.detailed-status > .media-spoiler,
+.status > .media-spoiler,
+.video-player {
+  max-width: none;
+}
+
+/* If there's no status text, add an extra margin on top */
+.status .status__info + .media-gallery,
+.status .status__info + .media-spoiler,
+.status .status__info + .video-player,
+.status .status__info + .status-card {
+  margin-top: 40px;
+}
+
+/* Undo transforms on videos inside the video player */
+.status__video-player-video {
+  transform:unset;
+  top:unset;
+}
+
+
+/* Adjust offset and width for detail view */
+.detailed-status .media-gallery {
+  margin-left:-10px;
+  width: calc(100% + 22px);
+}
+
+.public-layout .status {
+  .status__content {
+    min-height: 15px;
+  }
+  & > .media-spoiler,
+  .video-player,
+  .media-gallery,
+  .status-card {
+    margin-top:20px;
+    width: calc(100% + 94px);
+    margin-left: -78px;
+  }
+}