fixed start page and scroll in modal window

src/styles/modal.css

@@ -274,12 +274,23 @@
     align-items: flex-end;
   }
 
-  .f-modal {
+  .f-modal-bg.auth-modal-bg {
+    align-items: center;
+  }
+
+  .f-modal:not(.auth-modal) {
     width: 100%;
     max-height: 92vh;
     border-radius: 20px 20px 0 0;
     padding: 20px 16px 32px; /* 32px снизу — отступ от home indicator */
   }
+
+  .auth-modal {
+    width: 100%;
+    max-height: 80vh;
+    border-radius: 20px;
+    padding: 20px 16px 32px;
+  }
 }
 
 /* ── Rules Checkbox ── */