beautifying the new shitpost upload process

public/s/css/upload.css

@@ -255,7 +255,6 @@
     flex: 1;
     display: flex;
     flex-direction: column;
-    gap: 10px;
     overflow: hidden;
     min-width: 0;
 }
@@ -1170,3 +1169,31 @@
 .item-comment-input {
     min-height: 60px;
 }
+
+/* Media column wrapper for URL items in shitpost mode:
+   stacks the embed/icon above the url-type-badge (refetch trigger).
+   Mirrors the flex sizing of .preview-media-small so embed size is unchanged. */
+.item-media-col {
+    display: flex;
+    flex-direction: column;
+    align-items: stretch;
+    flex: 0 0 50%;
+    width: 50%;
+    min-height: 275px;
+    max-height: 350px;
+}
+
+.item-media-col iframe,
+.item-media-col .generic-file-icon {
+    width: 100%;
+    flex: 1 1 auto;
+    min-height: 120px;
+    max-height: 320px;
+    border-radius: 8px;
+    background: rgba(0, 0, 0, 0.3);
+}
+
+/* Badge inside the col sits flush below the embed, no extra sizing */
+.item-media-col .url-type-badge {
+    flex-shrink: 0;
+}