.vt-messenger-dialog {
  box-sizing: border-box;
  width: min(520px, calc(100vw - 24px));
  max-height: calc(100dvh - 32px);
  overflow: auto;
  border: 0;
  border-radius: 24px;
  padding: 28px;
  color: #163d75;
  background: #fff;
  font: 16px/1.5 system-ui, sans-serif;
  box-shadow: 0 20px 80px #001b4540;
}
.vt-messenger-dialog::backdrop { background: #12274280; }
.vt-messenger-dialog h2 { margin: 0 0 12px; color: #103e82; font: 700 26px/1.2 system-ui, sans-serif; }
.vt-messenger-dialog p { margin: 12px 0; font: inherit; }
.vt-messenger-dialog textarea {
  box-sizing: border-box;
  display: block;
  width: 100%;
  min-height: 150px;
  border: 1px solid #c9dce9;
  border-radius: 12px;
  padding: 12px;
  background: #f2f8fc;
  color: #20334e;
  font: 14px/1.5 system-ui, sans-serif;
  resize: vertical;
}
.vt-messenger-dialog button { display: block; width: 100%; margin-top: 14px; border: 0; border-radius: 12px; padding: 14px; background: #103e82; color: #fff; font: 600 16px/1.3 system-ui, sans-serif; cursor: pointer; }
.vt-messenger-dialog a { display: inline-block; color: #103e82; text-decoration: underline; padding: 8px 0; font: 600 16px/1.3 system-ui, sans-serif; }
.vt-messenger-dialog button.vt-messenger-dialog__close { background: #ecf4f9; color: #103e82; }
.vt-messenger-dialog :focus-visible { outline: 3px solid #189fd5; outline-offset: 3px; }
@media (max-width: 420px) { .vt-messenger-dialog { padding: 20px; } }