/* Shared sizing protects rich content, forms and long names without clipping the page. */
:where(
    .head,
    .actions,
    .row,
    .stack,
    .grid,
    .two,
    .form-grid,
    .editor,
    .module-heading,
    .certificate-designer
  )
  > * {
  min-width: 0;
}
:where(h1, h2, h3, p, a, label, legend, summary, .badge, .notice, .card, td) {
  overflow-wrap: anywhere;
}
input,
select,
textarea,
fieldset,
progress {
  min-width: 0;
  max-width: 100%;
}
button,
.button {
  min-height: 44px;
  max-width: 100%;
  white-space: normal;
  text-align: center;
}
input[type="radio"],
input[type="checkbox"] {
  flex: 0 0 20px;
}
label.check {
  min-height: 44px;
  align-items: center;
}
:where(.text-content, .rich-body, .lesson-card, .slide) img,
.lesson-image {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}
.text-content :where(iframe, video) {
  max-width: 100%;
}
.text-content pre,
.rich-body pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.text-content table {
  display: block;
  max-width: 100%;
  overflow: auto;
}
.text-content {
  line-height: 1.75;
}
.answer:has(input:checked) {
  background: var(--soft);
  border-color: var(--brand);
}
.answer:focus-within {
  border-color: var(--brand);
}
.written-answer {
  display: grid;
}
.question legend {
  max-width: 100%;
  scroll-margin-top: 20px;
}
.navigation-disclosure {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: #233044;
}
.navigation-disclosure > summary {
  display: none;
}
.lesson-outline {
  align-self: start;
}
.lesson-outline > summary {
  padding: 8px 0;
  line-height: 1.6;
}
.lesson-outline > summary span {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 13px;
}
.outline-content {
  padding-top: 16px;
}
.learning-shortcuts {
  display: flex;
  gap: 8px 20px;
  flex-wrap: wrap;
  margin: -8px 0 16px;
}
.learning-shortcuts a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
}
.lesson-card,
#course-assessments,
#course-help {
  scroll-margin-top: 16px;
}
.lesson-actions {
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.lesson-actions .actions {
  justify-content: flex-end;
}
.lesson-actions .actions > * {
  flex: 1 1 140px;
}
.slide-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 10px;
}
.slide-nav #slide-count {
  white-space: nowrap;
  font-size: 13px;
}
.media {
  display: block;
  object-fit: contain;
}
.assessment-navigation {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.assessment-navigation p {
  margin: 0;
}
.assessment-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.assessment-controls button {
  flex: 1 1 160px;
}
[data-form="attempt"] > [type="submit"] {
  width: 100%;
  margin-top: 18px;
}
#attempt-timer {
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
#attempt-save {
  font-size: 14px;
  line-height: 1.6;
}
.cell-label {
  display: none;
}
.table-wrap,
.data-table {
  max-width: 100%;
}
dialog {
  max-height: calc(100dvh - 24px);
  overscroll-behavior-y: contain;
}
dialog .head {
  align-items: flex-start;
}
.dialog-footer {
  bottom: -26px;
  padding-bottom: max(18px, env(safe-area-inset-bottom));
}
@media screen and (max-width: 1024px) {
  .shell {
    display: block;
  }
  .navigation-disclosure > summary {
    display: list-item;
    padding: 12px max(20px, env(safe-area-inset-left));
    color: white;
    min-height: 48px;
  }
  .navigation-disclosure > summary span {
    margin-left: 12px;
    font-weight: 400;
    font-size: 13px;
    color: #e2e8f0;
  }
  .sidebar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px 12px;
    min-height: 0;
    padding: 8px 16px 16px;
    overflow: visible;
  }
  .sidebar a,
  .sidebar > a {
    white-space: normal;
    margin: 0;
    font-size: 14px;
    min-height: 44px;
  }
  .sidebar .nav-section {
    display: block;
    margin: 8px 0 0;
  }
  .nav-section h2 {
    display: block;
    margin: 10px 12px;
  }
  .content,
  .public-content {
    padding: 24px max(20px, env(safe-area-inset-right)) 36px
      max(20px, env(safe-area-inset-left));
  }
  .player,
  .editor {
    grid-template-columns: minmax(0, 1fr);
  }
  .player .player-main {
    order: 0;
  }
  .lesson-outline {
    padding: 0 16px;
  }
  .lesson-outline > summary {
    padding: 12px 0;
    min-height: 48px;
  }
  .outline-content {
    max-height: 55dvh;
    overflow: auto;
    padding: 0 0 12px;
  }
  .editor .outline {
    position: static;
    max-height: 300px;
  }
  .topbar {
    padding: 12px max(20px, env(safe-area-inset-right)) 12px
      max(20px, env(safe-area-inset-left));
    gap: 10px;
    flex-wrap: wrap;
  }
  .toplinks {
    gap: 8px;
  }
  .identity {
    display: none;
  }
  .hero h1 {
    font-size: clamp(28px, 5vw, 38px);
  }
  .head {
    gap: 12px;
  }
  .certificate-designer {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media screen and (max-width: 600px) {
  .content,
  .public-content {
    padding: 20px 12px 32px;
  }
  .topbar {
    padding: 12px;
  }
  .brand {
    font-size: 22px;
  }
  .toplinks {
    flex-wrap: wrap;
  }
  .toplinks > a:not(.button) {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  .hero,
  .card,
  .course .course-body {
    padding: 16px;
  }
  .hero h1 {
    font-size: 29px;
  }
  .head h1 {
    font-size: 25px;
  }
  .head > .actions,
  .head > div:first-child {
    width: 100%;
  }
  .head .actions > *,
  .row > .actions,
  .course .actions > * {
    flex: 1 1 140px;
  }
  .filters {
    gap: 12px;
  }
  .filters label,
  .filters .search {
    flex: 1 1 100%;
    min-width: 0;
  }
  .filters > button {
    width: 100%;
  }
  .grid,
  .two,
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .workspace-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .workspace-metrics .card {
    padding: 14px;
  }
  .workspace-metrics strong {
    font-size: 25px;
  }
  .workspace-metrics span {
    font-size: 13px;
  }
  .row {
    gap: 12px;
    flex-wrap: wrap;
  }
  .row > div:first-child {
    flex-basis: 100%;
  }
  .slide {
    padding: 16px;
    min-height: 180px;
  }
  .slide h2 {
    font-size: 23px;
  }
  .pdf {
    height: 65dvh;
    min-height: 240px;
  }
  .answer {
    padding: 14px 12px;
  }
  .question legend {
    font-size: 17px;
  }
  .assessment-navigation > label {
    width: 100%;
  }
  .lesson-actions .actions {
    gap: 8px;
  }
  dialog,
  dialog.editor-dialog {
    width: calc(100% - 16px);
    max-width: none;
    padding: 16px;
  }
  .dialog-footer {
    bottom: -16px;
  }
  .dialog-footer > * {
    flex: 1;
  }
  .auth {
    margin: 12px auto;
  }
  .auth .links {
    flex-wrap: wrap;
    gap: 8px;
  }
  .auth .links a {
    padding: 10px 0;
  }
  .rich-toolbar {
    gap: 6px;
  }
  .rich-toolbar button {
    flex: 1 1 auto;
  }
  .tabs,
  .detail-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    max-width: 100%;
    padding-bottom: 8px;
  }
  .tabs button,
  .detail-tabs a {
    flex-shrink: 0;
  }
  .record-table {
    background: transparent;
    border: 0;
    overflow: visible;
  }
  .record-table table {
    display: block;
    min-width: 0;
  }
  .record-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .record-table tbody {
    display: grid;
    gap: 14px;
  }
  .record-table tbody tr {
    display: block;
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: white;
  }
  .record-table td,
  .record-table td:first-child {
    display: block;
    min-width: 0;
    width: 100%;
    max-width: none;
    padding: 10px 0;
    border: 0;
  }
  .record-table td + td {
    border-top: 1px solid #edf0f4;
  }
  .record-table .cell-label {
    display: block;
    color: var(--muted);
    font-size: 11px;
    font-weight: 650;
    margin-bottom: 6px;
  }
  .record-table td .actions {
    flex-wrap: wrap;
  }
  .record-table td .button {
    width: 100%;
  }
  .certificate-preview {
    padding: 8px;
  }
  .certificate-sheet,
  .certificate-sheet.portrait {
    min-width: 0;
    min-height: 0;
    padding: 40px 16px 24px;
  }
  .certificate-sheet h1 {
    font-size: 26px;
  }
  .certificate-sheet h2 {
    font-size: 20px;
  }
  .certificate-signature {
    min-width: 0;
    max-width: 100%;
  }
  .certificate-brand {
    margin-bottom: 24px;
  }
  #toast {
    left: 12px;
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    max-width: none;
  }
}
/* Short landscape screens prioritize media over navigation, retaining native controls. */
@media screen and (max-width: 1024px) and (orientation: landscape) and (max-height: 600px) {
  .topbar {
    padding-top: 6px;
    padding-bottom: 6px;
  }
  .content {
    padding-top: 16px;
  }
  .media {
    max-height: 80dvh;
  }
  .slide {
    min-height: 0;
    padding: 18px;
  }
  .slide img,
  .lesson-image {
    max-height: 80dvh;
  }
  .outline-content {
    max-height: 65dvh;
  }
}
@media print {
  .navigation-disclosure,
  .learning-shortcuts,
  .assessment-controls {
    display: none !important;
  }
}

/* NN-5095: concise review rows remain readable on small screens. */
.review-answer {
  align-items: flex-start;
  gap: 1rem;
}
.review-answer > div {
  min-width: 0;
  overflow-wrap: anywhere;
}
.review-answer p {
  white-space: pre-wrap;
}
.assessment-review {
  margin-block: 1rem;
}
@media (max-width: 600px) {
  .review-answer {
    flex-direction: column;
  }
  .review-answer button {
    align-self: flex-start;
  }
}
.assessment-result {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.assessment-result > div {
  background: white;
  border: 1px solid #dde4ed;
  border-radius: 10px;
  padding: 1rem;
}
.assessment-result small,
.assessment-result strong {
  display: block;
}
.assessment-result strong {
  font-size: 1.65rem;
  color: #253247;
}