/* D-067: native-shell variant of the shared preferences dialog; browser UI unchanged. */
html.mobile-app-settings .ui-release-footer,
html.mobile-app-settings .browser-preferences-footer[hidden] { display: none; }
html.mobile-app-settings .mobile-app-settings-bar {
  display: flex; padding: max(8px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 8px max(16px, env(safe-area-inset-left));
  background: var(--ui-surface); border-bottom: 1px solid var(--ui-line);
}
html.mobile-app-settings body #browser-preferences-open {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; flex: 0 0 auto;
  min-height: 44px; padding: 9px 12px; text-decoration: none; white-space: normal;
  border: 1px solid var(--ui-line); border-radius: var(--ui-control-radius);
  background: var(--ui-tint); color: var(--brand-blue); font: 600 14px/1.5 var(--ui-font);
}
html.mobile-app-settings body #browser-preferences-open:hover { background: var(--ui-line); }
html.mobile-app-settings body #browser-preferences-open:active { background: var(--brand-blue); color: var(--ui-surface); }
html.mobile-app-settings .mobile-settings-host { flex-wrap: wrap; }
html.mobile-app-settings .mobile-settings-entry { display: contents; }
html.mobile-app-settings :is(#browser-preferences-open, .mobile-settings-close) svg {
  flex: 0 0 20px; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
html.mobile-app-settings body dialog.mobile-app-settings-drawer {
  position: fixed; inset: 0 0 auto auto; margin: 0; width: min(440px, 100%); max-width: 100%;
  height: var(--ui-viewport-height, 100dvh); max-height: 100dvh;
  border: 0; border-inline-end: 1px solid var(--ui-line); border-radius: 0;
  text-align: start; animation: mobile-settings-enter 180ms ease-out;
}
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-heading {
  position: relative; padding: calc(22px + env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) 20px max(20px, env(safe-area-inset-left));
  border-top: 0; border-bottom: 1px solid var(--ui-line); background: var(--ui-tint);
}
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-heading::before {
  content: ''; position: absolute; inset: 0 0 auto; height: 4px;
  background: linear-gradient(to left, var(--brand-blue) 0 60%, var(--brand-green) 60% 86%, var(--brand-magenta) 86%);
}
html.mobile-app-settings .mobile-app-settings-drawer .mobile-settings-eyebrow {
  color: var(--brand-blue); margin: 0 0 8px; font-size: 13px; font-weight: 700; padding-inline-end: 90px;
}
html.mobile-app-settings .mobile-app-settings-drawer h2 { font-size: 26px; }
html.mobile-app-settings .mobile-settings-close {
  position: absolute; inset-inline-end: max(16px, env(safe-area-inset-left)); top: calc(12px + env(safe-area-inset-top));
  display: inline-flex; align-items: center; gap: 4px; min-height: 44px; padding: 8px;
  color: var(--brand-blue); background: var(--ui-surface); border: 1px solid var(--ui-line); border-radius: var(--ui-control-radius); font: 600 14px/1.5 var(--ui-font);
}
html.mobile-app-settings .mobile-settings-close:not(:disabled):hover { background: var(--ui-line); }
html.mobile-app-settings .mobile-settings-close:not(:disabled):active { background: var(--ui-tint); }
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-body {
  flex: 1 1 auto; padding: 0 max(20px, env(safe-area-inset-right)) 16px max(20px, env(safe-area-inset-left));
  scroll-padding-block: 16px;
}
html.mobile-app-settings .mobile-app-settings-drawer :is(button, a, summary) { scroll-margin-block: 16px; }
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-section { padding-block: 22px; }
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-section:first-child { border-top: 0; }
html.mobile-app-settings .mobile-notification-state {
  display: table; min-height: 28px; margin: 8px 0 12px; padding: 3px 10px; border-radius: var(--ui-control-radius);
  border: 1px solid var(--ui-line); background: var(--ui-tint); color: var(--brand-blue); font-size: 13px; font-weight: 700;
}
html.mobile-app-settings .mobile-notification-state[data-tone='success'] { color: var(--ui-success); }
html.mobile-app-settings .mobile-notification-state[data-tone='error'] { color: var(--ui-danger); }
html.mobile-app-settings .mobile-app-settings-drawer :is(#browser-preferences-enable, #mobile-app-info-retry) {
  width: 100%; min-height: 48px; margin-top: 16px; padding: 10px 14px; border: 1px solid var(--brand-blue); border-radius: var(--ui-control-radius);
  font: 600 16px/1.6 var(--ui-font); background: var(--brand-blue); color: var(--ui-surface);
}
html.mobile-app-settings .mobile-app-settings-drawer :is(#browser-preferences-enable, #mobile-app-info-retry):not(:disabled):hover { background: var(--ui-ink); }
html.mobile-app-settings .mobile-app-settings-drawer :is(#browser-preferences-enable, #mobile-app-info-retry):not(:disabled):active { background: var(--ui-focus); }
html.mobile-app-settings .mobile-app-settings-drawer .browser-preferences-utilities { flex-direction: column; gap: 10px; }
html.mobile-app-settings .mobile-app-settings-drawer [hidden] { display: none; }
html.mobile-app-settings .mobile-settings-about dl { margin: 14px 0 0; }
html.mobile-app-settings .mobile-settings-about dl > div { display: flex; justify-content: space-between; gap: 16px; padding-block: 8px; border-bottom: 1px solid var(--ui-line); }
html.mobile-app-settings .mobile-settings-about :is(dt, dd) { margin: 0; font-size: 14px; }
html.mobile-app-settings .mobile-settings-about dt { color: var(--ui-muted); }
html.mobile-app-settings .mobile-settings-about dd { font-weight: 700; overflow-wrap: anywhere; text-align: end; }
html.mobile-app-settings .mobile-settings-info-status { font-size: 14px; color: var(--ui-muted); }
html.mobile-app-settings .mobile-settings-info-status:empty { display: none; }
html.mobile-app-settings .mobile-settings-demo button {
  width: 100%; min-height: 48px; padding: 10px 14px; margin-top: 8px;
  border: 1px solid var(--brand-blue); border-radius: var(--ui-control-radius);
  font: 600 16px/1.6 var(--ui-font); color: var(--brand-blue); background: var(--ui-surface);
}
html.mobile-app-settings .mobile-settings-demo button:not(:disabled):hover { background: var(--ui-tint); }
html.mobile-app-settings .mobile-settings-demo button:not(:disabled):active { color: var(--ui-focus); }
html.mobile-app-settings .mobile-settings-privacy summary { min-height: 44px; padding-block: 10px; color: var(--brand-blue); font-weight: 700; }
html.mobile-app-settings .mobile-settings-privacy summary:hover { color: var(--ui-focus); }
html.mobile-app-settings .mobile-settings-privacy .browser-preferences-section { border: 0; padding-block: 12px 0; font-size: 14px; }
html.mobile-app-settings .mobile-settings-support { display: block; min-height: 44px; padding-block: 12px; color: var(--brand-blue); text-underline-offset: 4px; }
html.mobile-app-settings .mobile-settings-support:hover { color: var(--ui-focus); }
html.mobile-app-settings .mobile-app-settings-drawer a[aria-disabled='true'] { cursor: wait; opacity: .6; }
html.mobile-app-settings .mobile-app-settings-drawer .mobile-settings-actions {
  display: block; padding: 12px max(20px, env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
}
html.mobile-app-settings .mobile-settings-actions button { width: 100%; }
@keyframes mobile-settings-enter { from { transform: translateX(24px); opacity: .5; } to { transform: none; opacity: 1; } }
@media (max-width: 700px) {
  html.mobile-app-settings .mobile-settings-entry { display: flex; flex: 0 0 100%; justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html.mobile-app-settings body dialog.mobile-app-settings-drawer { animation: none; } }
@media (forced-colors: active) { html.mobile-app-settings body dialog.mobile-app-settings-drawer { border: 1px solid CanvasText; } }
@media print {
  /* Mobile chrome must not appear on school documents. */
  html.mobile-app-settings :is(#browser-preferences-open, .mobile-app-settings-bar) { display: none !important; }
}