@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
    min-height: 0;
  }

  .empty-state {
    min-height: 270px;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100% - 28px, 1320px);
  }

  .topbar {
    padding-top: 18px;
  }

  .hero {
    display: block;
    padding: 40px 0 30px;
  }

  .hero-note {
    margin-top: 22px;
  }

  .panel {
    padding: 19px;
    border-radius: 16px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .action-row {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .button {
    width: 100%;
  }

  .footer {
    align-items: start;
    flex-direction: column;
    gap: 5px;
  }
}