/* Keep this responsive layer after the legacy theme and desktop grid rules. */
@media (max-width: 900px) {
  html { min-width: 0; }
  body.guardian-ui,
  body.guardian-ui.admin-mode {
    height: auto;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: auto;
  }
  body.guardian-ui .app,
  body.guardian-ui.admin-mode .app {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    height: auto;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 8px;
    gap: 0;
  }
  .guardian-ui .sidebar,
  .guardian-ui .right-shell { display: none; }
  .guardian-ui .chat-pane {
    display: flex;
    flex-direction: column;
    min-width: 0;
    width: 100%;
    overflow: visible;
  }
  .guardian-ui .chat-head {
    flex-wrap: wrap;
    gap: 14px;
    padding: 16px;
  }
  .guardian-ui .chat-head > div {
    min-width: 0;
    max-width: 100%;
    flex: 1 1 100%;
    overflow-wrap: anywhere;
  }
  .guardian-ui .chat-head > div:last-child { text-align: left !important; margin-top: 0; }
  .guardian-ui .lang-switch { justify-content: flex-start; flex-wrap: wrap; }
  .guardian-ui .chat-title { font-size: 22px; }
  .guardian-ui .construction-notice { border-radius: 12px; }
  .guardian-ui .messages {
    flex: 1 0 auto;
    min-height: 180px;
    overflow: visible;
    padding: 16px;
    min-width: 0;
  }
  .guardian-ui .messages .msg {
    max-width: 100%;
    min-width: 0;
    overflow-wrap: anywhere;
  }
  .guardian-ui .messages .msg pre { max-width: 100%; overflow: auto; }
  .guardian-ui .composer {
    padding: 16px;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    min-width: 0;
  }
  .guardian-ui .composer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .guardian-ui .composer-grid textarea {
    grid-column: 1 / -1;
    min-width: 0;
    min-height: 96px;
    font-size: 16px;
  }
  .guardian-ui .composer-grid button { min-width: 0; min-height: 46px; }
  .guardian-ui .meta-row { min-width: 0; }
  .guardian-ui .meta-row > input:not([type="checkbox"]),
  .guardian-ui .meta-row > select,
  .guardian-ui .meta-row > label,
  .guardian-ui .meta-row > button {
    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }
  .guardian-ui input,
  .guardian-ui textarea,
  .guardian-ui select { font-size: 16px; }
  .guardian-ui input[type="file"] { overflow: hidden; }
  .guardian-ui .angel-speech-toolbar { min-width: 0; max-width: 100%; }
  .guardian-ui .angel-speech-toolbar label {
    min-width: 0;
    max-width: 100%;
    flex-wrap: wrap;
  }
  .guardian-ui .angel-speech-toolbar select {
    min-width: 0;
    max-width: 100%;
    flex: 1 1 180px;
  }
  .guardian-ui .angel-speech-status { overflow-wrap: anywhere; }
  .guardian-ui .modal { padding: 8px; align-items: flex-start; overflow: auto; }
  .guardian-ui .modal-box { width: 100%; max-height: 94vh; max-height: 94dvh; padding: 16px; }
  .guardian-ui .auth-grid { grid-template-columns: minmax(0, 1fr); }
  .guardian-ui .auth-col { min-width: 0; }
}