.iframe-modal{
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.55);
  padding: 24px; z-index: 1000;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .45s ease;
}
.iframe-modal.is-open,
.iframe-modal[aria-hidden="false"]{
  opacity: 1; visibility: visible; pointer-events: auto;
}

.iframe-modal-dialog{
  background: #fff; color: #172232;
  width: min(1100px, 96vw);
  max-height: calc(100vh - 96px);
  overflow: auto; border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  position: relative;
  transform: translateY(16px) scale(.98);
  opacity: 0;
  transition: transform .45s ease, opacity .45s ease;
}
.iframe-modal.is-open .iframe-modal-dialog,
.iframe-modal[aria-hidden="false"] .iframe-modal-dialog{
  transform: translateY(0) scale(1);
  opacity: 1;
}

.iframe-modal-content{ padding: 24px; }
.iframe-modal-title{ margin: 0 0 8px; font-size: 22px; font-weight: 700; }
.iframe-modal-body{ display: grid; gap: 14px; }

#iframeMount{ min-height: 400px; }
.iframe-modal-fallback{ font-size: 14px; color: #4a5a70; }
.iframe-modal-fallback strong{ color: #172232; }

.iframe-modal-close{
  position: absolute; right: 10px; top: 8px;
  width: 40px; height: 40px; border: 0; background: transparent;
  font-size: 28px; line-height: 40px; cursor: pointer; color: #5b6b85;
}

body.modal-open{ overflow: hidden; }

@media (max-width: 1024px){
  .iframe-modal{ align-items: flex-start; padding: 16px 12px; overflow-y: auto; }
  .iframe-modal-dialog{ width: 100%; border-radius: 14px; max-height: none; overflow: visible; }
  .iframe-modal-content{ padding: 18px; }
}