hide some elements, notifications zone, bug fixes

static/styles/main.css

@@ -1150,6 +1150,34 @@ input::placeholder {
   color: #0f0f10;
 }
 
+.dropdown-notifications {
+  display: none;
+  flex-direction: column;
+  align-items: flex-start;
+  position: absolute;
+  background-color: #fff;
+  width: 350px;
+  min-height: 180px;
+  padding: 8px 0;
+  transform: translate(-100%, 50px);
+  border: 1px solid rgba(0, 0, 0, 0.1);
+  border-radius: 12px;
+  box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.02),
+    0px 4px 8px -4px rgba(0, 0, 0, 0.04), 0px 16px 24px -8px rgba(0, 0, 0, 0.06);
+  z-index: 6;
+  opacity: 0;
+  transition: none;
+}
+
+.dropdown-notifications .empty-span {
+  font-size: 16px;
+}
+
+.dropdown-notifications.is-visible {
+  opacity: 1;
+  transition: opacity 0.2s ease;
+}
+
 .theme-switcher {
   display: inline-flex;
   gap: 4px;