Release 2.21.0: non-destructive media and scoped player sync

src/web/public/css/theme-custom.css

@@ -3321,6 +3321,41 @@ html[data-bs-theme='dark'] .template-field-card .tox .tox-collection {
   justify-items: end;
 }
 
+.slide-image-region-preview-tools {
+  display: grid;
+  grid-template-columns: 2.5rem minmax(0, 1fr);
+  min-height: 176px;
+  background: var(--bs-tertiary-bg);
+}
+
+.slide-image-region-preview-tools > .slide-image-region-preview-box {
+  min-width: 0;
+}
+
+.slide-image-region-crop {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0;
+  border: 0;
+  border-right: 1px solid var(--bs-border-color);
+  border-radius: 0;
+  background: transparent;
+  color: var(--bs-secondary-color);
+  font-size: 1.125rem;
+  cursor: pointer;
+}
+
+.slide-image-region-crop:hover:not(:disabled) {
+  background: var(--bs-secondary-bg);
+  color: var(--bs-body-color);
+}
+
+.slide-image-region-crop:focus-visible {
+  outline: 2px solid var(--bs-primary);
+  outline-offset: -2px;
+}
+
 .slide-image-region-preview-shell {
   position: relative;
   display: block;