server-side storage for flags

src/components/update_notification/update_notification.scss

@@ -1,5 +1,13 @@
 @import 'src/_variables.scss';
+.UpdateNotification {
+  overflow: hidden;
+}
 .UpdateNotificationModal {
+  --__top-fringe: 18em; // how much pleroma-tan should stick her head above
+  --__bottom-fringe: 80em; // just reserving as much as we can, number is mostly irrelevant
+  --__right-fringe: 8em;
+
+  font-size: 15px;
   /* Explanation:
    * Modal is positioned vertically centered.
    * 100vh - 100% = Distance between modal's top+bottom boundaries and screen
@@ -8,27 +16,90 @@
    *   bottom of the screen
    * - 50px - leaving tiny amount of space so that titlebar + tiny amount of modal is visible
    */
-  transform: translateY(calc(((100vh - 100%) / 2 + 5%)));
-  max-width: 90vh;
-  width: 30em;
   position: relative;
+  transition: transform;
+  transition-timing-function: ease-in-out;
+  transition-duration: 500ms;
+
+  .text {
+    width: 40em;
+    padding-left: 1em;
+  }
 
   @media all and (max-width: 800px) {
     /* For mobile, the modal takes 100% of the available screen.
     This ensures the minimized modal is always 50px above the browser bottom bar regardless of whether or not it is visible.
    */
-    transform: translateY(calc(100% - 50px));
+    width: 100vw;
   }
-  .panel-body > p {
-    width: calc(100% - 10em)
+
+  @media all and (max-height: 600px) {
+    display: none;
+  }
+
+  .content {
+    overflow: hidden;
+    margin-top: calc(-1 * var(--__top-fringe));
+    margin-bottom: calc(-1 * var(--__bottom-fringe));
+    margin-right: calc(-1 * var(--__right-fringe));
+  }
+
+  .panel-body {
+    border-width: 0 0 1px 0;
+    border-style: solid;
+    border-color: var(--border, $fallback--border);
+  }
+
+  .panel-footer {
+    z-index: 22;
+    position: relative;
+    border-width: 0;
+    grid-template-columns: auto;
   }
 
   .pleroma-tan {
-    max-width: 20em;
-    max-height: 40em;
-    position: absolute;
-    right: -5em;
-    top: -10em;
-    z-index: 10;
+    object-fit: cover;
+    object-position: top;
+    transition: position, left, right, top, bottom, max-width, max-height;
+    transition-timing-function: ease-in-out;
+    transition-duration: 500ms;
+    width: 25em;
+    float: right;
+    z-index: 20;
+    position: relative;
+    shape-margin: 0.5em;
+  }
+
+  .spacer-top {
+    min-height: var(--__top-fringe);
+  }
+
+  .spacer-bottom {
+    min-height: var(--__bottom-fringe);
+  }
+
+  .extra-info {
+    transition: max-height, padding, height;
+    transition-timing-function: ease-in-out;
+    transition-duration: 500ms;
+    max-height: auto;
+    height: auto;
+  }
+
+  &.-peek {
+    transform: translateY(calc(((100vh - 100%) / 2)));
+
+    .pleroma-tan {
+      float: right;
+      z-index: 10;
+      shape-image-threshold: 0.7;
+    }
+
+    .extra-info {
+      max-height: 0;
+      height: 0;
+      display: none;
+      overflow: hidden;
+    }
   }
 }