:root {
  color-scheme: light;
  --bg: #eef3f1;
  --panel: #ffffff;
  --ink: #15211d;
  --muted: #61716b;
  --line: #d8e1dd;
  --accent: #ce5a28;
  --accent-dark: #9d3e1a;
  --header: #00313d;
  --header-2: #004555;
  --ok: #177245;
  --bad: #b3261e;
}

/* Mobile portrait participant data form. */
@media (max-width: 759px) and (orientation: portrait) {
  #participantView {
    position: relative !important;
    box-sizing: border-box !important;
    width: 100% !important;
    max-width: none !important;
    min-height: 100vh !important;
    padding: 8px 10px 16px !important;
    overflow: auto !important;
  }

  #participantView .test-top {
    position: static !important;
    display: block !important;
    min-height: 42px !important;
    margin: 0 0 4px !important;
    padding: 0 !important;
  }

  #participantView .test-top > div {
    display: none !important;
  }

  #participantBackToCourse {
    position: absolute !important;
    top: 8px !important;
    right: 10px !important;
    z-index: 10 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    border-radius: 999px !important;
    padding: 0 !important;
    overflow: hidden !important;
    color: transparent !important;
    font-size: 0 !important;
  }

  #participantBackToCourse::before {
    content: "←" !important;
    color: var(--ink) !important;
    font-size: 24px !important;
    line-height: 1 !important;
  }

  #participantView .protocol-form {
    margin-top: 0 !important;
    gap: 8px !important;
    padding: 10px !important;
  }
}

/* Desktop course theater view: full video canvas, chapters will be tuned separately. */
@media (min-width: 900px) and (min-height: 651px) {
  .video-app {
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
  }

  .video-header {
    display: none !important;
  }

  #courseView .course-layout {
    display: block !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .stage {
    position: fixed !important;
    inset: 0 !important;
    z-index: 5 !important;
    display: block !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .slide-frame {
    width: 100vw !important;
    height: 100vh !important;
    min-height: 100vh !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: #050706 !important;
  }

  #courseView .slide-frame img {
    width: 100% !important;
    height: 100% !important;
    max-height: none !important;
    object-fit: contain !important;
    object-position: center center !important;
  }

  #courseView .slide-frame::after {
    height: 78px !important;
    background: linear-gradient(to top, rgb(0 0 0 / 82%), rgb(0 0 0 / 44%) 58%, transparent) !important;
  }

  #courseView .mobile-course-bar {
    position: fixed !important;
    inset: auto 10px 10px auto !important;
  }

  #courseView .mobile-video-controls {
    right: 74px !important;
    bottom: 24px !important;
    left: 10px !important;
  }

  #courseView .mobile-video-timeline {
    right: 74px !important;
    bottom: 5px !important;
    left: 10px !important;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

button,
select,
input {
  font: inherit;
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 18px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

button.secondary {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

button.secondary:hover {
  background: #f7faf8;
}

.video-app {
  width: min(1680px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0;
}

.video-header,
.test-top {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 44px);
}

h2 {
  margin-bottom: 10px;
}

.status {
  width: min(360px, 100%);
  color: var(--muted);
  font-weight: 700;
}

.user-status {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
}

.user-status button {
  min-height: 34px;
  padding: 0 12px;
  font-size: 13px;
}

.login-view {
  display: grid;
  min-height: min(640px, calc(100vh - 140px));
  place-items: center;
}

.login-card {
  display: grid;
  gap: 14px;
  width: min(460px, 100%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  background: var(--panel);
  box-shadow: 0 18px 45px rgb(21 33 29 / 10%);
}

.login-error {
  margin: 0;
  border-left: 4px solid var(--bad);
  padding: 10px 12px;
  background: #fff4f2;
  color: var(--bad);
  font-weight: 700;
}

.progress-track {
  height: 9px;
  margin-top: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #d7e1dd;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: var(--accent);
  transition: width 180ms ease;
}

.course-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
}

.mobile-course-bar,
.mobile-menu-backdrop,
.mobile-video-controls,
.mobile-video-timeline {
  display: none;
}

.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: stretch;
}

.chapter-panel,
.slide-frame,
.side-panel,
.question-card,
.result-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 18px 45px rgb(21 33 29 / 10%);
}

.chapter-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: calc(100vh - 154px);
  padding: 16px;
}

.panel-heading h2 {
  margin: 0;
  font-size: 22px;
}

.chapter-list {
  display: grid;
  gap: 7px;
  overflow: auto;
  padding-right: 4px;
}

.language-field {
  margin: 14px 0;
}

.chapter-button {
  display: block;
  width: 100%;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--ink);
  text-align: left;
  font-weight: 700;
}

.chapter-button:hover,
.chapter-button.is-active {
  border-color: var(--header);
  background: #e9f2f0;
}

.chapter-button span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.slide-frame {
  display: grid;
  min-height: 480px;
  overflow: hidden;
  place-items: center;
  position: relative;
}

.slide-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.slide-object-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.slide-object {
  position: absolute;
  box-sizing: border-box;
  display: flex;
  overflow: hidden;
  padding: 0.35em 0.45em;
  color: #17212b;
  line-height: 1.12;
  white-space: pre-wrap;
}

.slide-object span {
  display: block;
  width: 100%;
}

.side-panel {
  padding: 18px;
  overflow: auto;
  max-height: calc(100vh - 154px);
}

.side-panel h2 {
  margin-bottom: 8px;
  font-size: 22px;
}

.chapter-label,
.narration-state {
  margin-bottom: 12px;
  color: var(--muted);
  font-weight: 700;
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.field select {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  background: #ffffff;
}

.field input {
  width: 100%;
}

.slide-audio-controls {
  width: 100%;
}

@media (min-width: 760px) {
  .course-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    align-items: stretch;
    min-height: calc(100vh - 210px);
  }

  .stage {
    display: contents;
  }

  .side-panel {
    grid-column: 1;
    grid-row: 1;
    max-height: none;
    padding: 12px;
  }

  .chapter-panel {
    grid-column: 1;
    grid-row: 2;
    gap: 8px;
    height: 100%;
    min-height: 0;
    max-height: none;
    padding: 12px;
  }

  .slide-frame {
    grid-column: 2;
    grid-row: 1 / span 2;
    min-height: calc(100vh - 210px);
  }

  .panel-heading {
    display: none;
  }

  .chapter-list {
    gap: 4px;
  }

  .chapter-button {
    border-radius: 6px;
    padding: 5px 7px;
    font-size: 13px;
    line-height: 1.2;
  }

  .side-panel .chapter-label {
    margin-bottom: 4px;
    font-size: 12px;
  }

  .side-panel h2 {
    margin-bottom: 6px;
    font-size: 18px;
  }

  .narration-state {
    margin-bottom: 8px;
    font-size: 13px;
  }

  .field {
    margin-bottom: 9px;
  }

  .controls {
    justify-content: flex-start;
    margin-left: 316px;
  }
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.slide-visible-text {
  max-height: 22vh;
  overflow: auto;
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fffaf0;
  color: #26352f;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.narration-text {
  max-height: 42vh;
  overflow: auto;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  color: #26352f;
  font-size: 15px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.narration-text.is-hidden,
.admin-only.is-hidden,
.is-hidden {
  display: none !important;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.test-view {
  max-width: 1180px;
  margin: 0 auto;
}

.question-card,
.result-card {
  padding: 22px;
}

.protocol-form {
  display: grid;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  background: var(--panel);
  box-shadow: 0 18px 45px rgb(21 33 29 / 10%);
}

.protocol-form fieldset {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
}

.protocol-form legend {
  padding: 0 8px;
  color: var(--header);
  font-weight: 800;
}

.protocol-form .field {
  margin: 0;
}

.protocol-form input {
  width: 100%;
}

.protocol-check {
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  padding: 14px 16px;
  background: #fff7ef;
  line-height: 1.45;
}

.protocol-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 18px 0;
}

.protocol-preview {
  margin: 24px auto;
  max-width: 820px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 24px;
  background: #ffffff;
  text-align: left;
  font-size: 12px;
  line-height: 1.25;
}

.protocol-preview h1 {
  color: var(--header);
  font-size: 20px;
}

.protocol-preview h2 {
  margin: 14px 0 6px;
  color: var(--header);
  font-size: 14px;
}

.protocol-preview table {
  width: 100%;
  border-collapse: collapse;
  margin: 6px 0 10px;
  font-size: 11px;
}

.protocol-preview th,
.protocol-preview td {
  border: 1px solid var(--line);
  padding: 4px 5px;
  vertical-align: top;
}

.protocol-preview th {
  background: #eef3f1;
  text-align: left;
}

.protocol-preview .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
}

.protocol-preview .box,
.protocol-preview .declaration {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fbfdfc;
}

.protocol-preview .declaration {
  border-left: 4px solid var(--accent);
  background: #fff7ef;
}

.protocol-preview .outline {
  columns: 2;
  column-gap: 18px;
  margin: 6px 0 10px;
}

.protocol-preview .outline p {
  break-inside: avoid;
  margin: 0 0 3px;
}

.protocol-preview .protocol-page {
  break-after: page;
  page-break-after: always;
}

.protocol-preview .protocol-page:last-child {
  break-after: auto;
  page-break-after: auto;
}

.protocol-preview .signature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 14px;
  align-items: end;
}

.protocol-preview .signature-line {
  min-height: 18px;
  border-top: 1px solid var(--ink);
  padding-top: 4px;
  text-align: center;
}

.protocol-preview .attachment-title {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

@media print {
  body {
    background: #ffffff;
  }

  body * {
    visibility: hidden;
  }

  #protocolPreview,
  #protocolPreview * {
    visibility: visible;
  }

  #protocolPreview {
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    max-width: none;
    margin: 0;
    border: 0;
    box-shadow: none;
    padding: 0;
  }

  #protocolPreview .grid,
  #protocolPreview .protocol-header-grid,
  #protocolPreview .signature {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
  }

  #protocolPreview .protocol-page {
    break-after: page;
    page-break-after: always;
  }

  #protocolPreview .protocol-page:last-child {
    break-after: auto;
    page-break-after: auto;
  }

  #protocolPreview .outline {
    columns: 2;
  }
}

.question-card h3 {
  font-size: clamp(22px, 3vw, 32px);
}

.question-images {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 14px 0;
}

.question-images img {
  max-width: min(360px, 100%);
  max-height: 260px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.answer-options {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.answer-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  background: #fbfdfc;
  cursor: pointer;
}

.answer-option:hover {
  border-color: var(--header-2);
}

.answer-option input {
  margin-top: 3px;
}

.answer-key {
  min-width: 28px;
  font-weight: 800;
}

.admin-answer {
  margin-top: 14px;
  border-left: 4px solid var(--ok);
  padding: 10px 12px;
  background: #edf7f1;
  font-weight: 700;
}

.score {
  color: var(--header);
  font-size: 28px;
  font-weight: 800;
}

.result-details {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}

.result-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #ffffff;
}

.result-row.is-correct {
  border-color: #b8dac7;
  background: #f2faf5;
}

.result-row.is-wrong {
  border-color: #ecc0bc;
  background: #fff4f2;
}

@media (max-width: 759px) {
  body.mobile-menu-open {
    overflow: hidden;
  }

  .video-app {
    width: 100%;
    min-height: 100vh;
    padding: 0;
  }

  .video-header {
    display: none;
  }

  .mobile-course-bar {
    position: sticky;
    top: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
    min-height: 58px;
    border-bottom: 1px solid var(--line);
    padding: 8px 10px;
    background: #ffffff;
    box-shadow: 0 8px 24px rgb(21 33 29 / 10%);
  }

  .mobile-menu-button {
    min-height: 42px;
    padding: 0 12px;
    white-space: nowrap;
  }

  .mobile-controls-button {
    display: none;
    min-height: 42px;
    padding: 0 12px;
    white-space: nowrap;
  }

  .mobile-course-title {
    min-width: 0;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
  }

  .mobile-course-title span,
  .mobile-course-title strong {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-course-title strong {
    margin-top: 2px;
    color: var(--ink);
    font-size: 14px;
  }

  .mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    z-index: 35;
    display: block;
    background: rgb(0 0 0 / 36%);
  }

  .course-layout,
  .stage {
    display: block;
  }

  .chapter-panel {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: min(86vw, 360px);
    max-height: none;
    border-radius: 0;
    padding: 14px;
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  body.mobile-menu-open .chapter-panel {
    transform: translateX(0);
  }

  .chapter-panel .panel-heading {
    display: block;
  }

  .chapter-list {
    max-height: none;
  }

  .chapter-button {
    padding: 8px 9px;
    font-size: 14px;
    line-height: 1.2;
  }

  .stage {
    padding-bottom: 120px;
  }

  .slide-frame {
    min-height: 0;
    border-width: 0 0 1px;
    border-radius: 0;
    box-shadow: none;
    background: #111816;
  }

  .slide-frame img {
    width: 100%;
    max-height: calc(100vh - 180px);
    object-fit: contain;
  }

  .side-panel {
    border-width: 0 0 1px;
    border-radius: 0;
    box-shadow: none;
    max-height: none;
    padding: 10px;
  }

  .side-panel h2,
  .side-panel .chapter-label,
  .side-panel .narration-state,
  .side-panel .slide-visible-text,
  .side-panel .narration-text,
  .side-panel .check,
  .side-panel label.is-hidden {
    display: none !important;
  }

  .side-panel .field {
    margin-bottom: 8px;
    font-size: 13px;
  }

  .slide-audio-controls {
    height: 34px;
  }

  .controls {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 32;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 6px;
    margin: 0;
    padding: 8px;
    border-top: 1px solid var(--line);
    background: #ffffff;
    box-shadow: 0 -10px 28px rgb(21 33 29 / 14%);
  }

  .controls button {
    min-height: 42px;
    padding: 0 6px;
    font-size: 12px;
    line-height: 1.15;
  }

  #restartButton {
    display: none;
  }

  #voiceToggle {
    grid-column: 1 / -1;
  }

  .test-view {
    width: min(100% - 20px, 1180px);
    padding: 12px 0 120px;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  body.mobile-menu-open,
  body.mobile-controls-open {
    overflow: hidden;
  }

  .video-app {
    width: 100%;
    min-height: 100vh;
    padding: 0;
  }

  .video-header {
    display: none;
  }

  .mobile-course-bar {
    min-height: 46px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 8px;
    align-items: center;
    padding: 5px 8px;
    background: rgb(255 255 255 / 94%);
  }

  .mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    z-index: 35;
    display: block;
    background: rgb(0 0 0 / 36%);
  }

  .mobile-menu-button,
  .mobile-controls-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 10px;
    font-size: 13px;
  }

  .mobile-course-title {
    font-size: 11px;
  }

  .mobile-course-title strong {
    font-size: 12px;
  }

  .course-layout,
  .stage {
    display: block;
    min-height: 0;
  }

  .stage {
    padding-bottom: 0;
  }

  .slide-frame {
    height: calc(100vh - 46px);
  }

  .slide-frame img {
    width: 100%;
    height: 100%;
    max-height: none;
    object-fit: contain;
  }

  .side-panel {
    display: none;
  }

  .chapter-panel {
    position: fixed;
    inset: 46px auto 0 0;
    z-index: 40;
    width: min(78vw, 340px);
    height: calc(100vh - 46px);
    max-height: none;
    border-radius: 0;
    padding: 12px;
    overflow: auto;
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  body.mobile-menu-open .chapter-panel {
    transform: translateX(0);
  }

  .chapter-panel .panel-heading {
    display: block;
  }

  .controls {
    position: fixed;
    top: 46px;
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 40;
    display: grid;
    grid-template-columns: 1fr;
    align-content: start;
    width: min(42vw, 260px);
    margin: 0;
    margin-left: 0;
    padding: 10px;
    overflow: auto;
    border-top: 0;
    border-left: 1px solid var(--line);
    transform: translateX(105%);
    transition: transform 180ms ease;
  }

  body.mobile-controls-open .controls {
    transform: translateX(0);
  }

  .controls button {
    width: 100%;
    min-height: 38px;
    font-size: 13px;
  }

  #restartButton {
    display: block;
  }

  #voiceToggle {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  .video-header,
  .test-top {
    display: block;
  }

  .status {
    margin-top: 14px;
  }

  .controls button {
    flex: 1 1 150px;
  }

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

  .protocol-preview .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 759px) {
  .video-header {
    display: none;
  }

  .chapter-panel {
    overflow: auto;
  }

  .controls {
    display: grid;
    margin-left: 0;
  }

  .controls button {
    flex: initial;
  }

  #participantView .protocol-form {
    gap: 10px;
    padding: 12px;
  }

  #participantView .protocol-form fieldset {
    gap: 9px;
    padding: 12px;
  }

  #participantView .field {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
    font-size: 13px;
  }

  #participantView .protocol-check {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    line-height: 1.3;
  }

  #participantView .protocol-actions {
    margin: 10px 0 0;
  }
}

@media (min-width: 760px) {
  .controls {
    justify-content: flex-start;
    margin-left: 316px;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  .video-app {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    padding: 0;
  }

  .video-header {
    display: none;
  }

  .mobile-course-bar {
    position: fixed;
    inset: 0 0 auto 280px;
    z-index: 45;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 112px;
    gap: 8px;
    align-items: center;
    min-height: 44px;
    padding: 5px 8px;
    border-bottom: 1px solid var(--line);
    background: rgb(255 255 255 / 95%);
    box-shadow: 0 8px 22px rgb(21 33 29 / 12%);
  }

  .mobile-controls-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 8px;
    font-size: 12px;
    white-space: nowrap;
  }

  .mobile-menu-button {
    display: none;
  }

  .mobile-course-title {
    min-width: 0;
    font-size: 10px;
    line-height: 1.15;
  }

  .mobile-course-title strong {
    font-size: 12px;
  }

  .mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    z-index: 35;
    display: block;
    background: rgb(0 0 0 / 30%);
  }

  .course-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 0;
    height: 100vh;
    padding-top: 44px;
    min-height: 0;
  }

  .chapter-panel {
    position: static;
    z-index: auto;
    display: flex;
    flex-direction: column;
    width: auto;
    height: calc(100vh - 44px);
    max-height: none;
    min-height: 0;
    border-width: 0 1px 0 0;
    border-radius: 0;
    padding: 10px;
    overflow: auto;
    opacity: 1;
    visibility: visible;
    transform: none !important;
    transition: none;
    box-shadow: none;
  }

  .chapter-panel .panel-heading {
    display: block;
  }

  .chapter-panel .panel-heading h2 {
    font-size: 17px;
  }

  .chapter-list {
    gap: 7px;
    overflow: visible;
  }

  .chapter-button {
    min-height: 38px;
    padding: 8px 9px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.25;
  }

  .stage {
    display: block;
    height: calc(100vh - 44px);
    min-height: 0;
    padding: 0;
    overflow: hidden;
    grid-column: 2;
  }

  .slide-frame {
    height: calc(100vh - 44px);
    min-height: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: #101615;
  }

  .slide-frame img {
    width: 100%;
    height: 100%;
    max-height: none;
    object-fit: contain;
  }

  .mobile-video-controls {
    position: absolute;
    right: 12px;
    bottom: 42px;
    left: 12px;
    z-index: 20;
    display: flex;
    justify-content: center;
    gap: 9px;
    pointer-events: none;
  }

  .mobile-video-controls button {
    min-width: 44px;
    min-height: 40px;
    border: 1px solid rgb(255 255 255 / 38%);
    border-radius: 999px;
    padding: 0 12px;
    background: rgb(21 33 29 / 72%);
    color: #ffffff;
    box-shadow: 0 8px 22px rgb(0 0 0 / 28%);
    pointer-events: auto;
  }

  .mobile-video-controls button:disabled {
    opacity: 0.35;
  }

  .mobile-video-controls #mobilePlayButton {
    min-width: 56px;
    background: rgb(206 90 40 / 88%);
    font-size: 18px;
  }

  .mobile-video-timeline {
    position: absolute;
    right: 16px;
    bottom: 8px;
    left: 16px;
    z-index: 21;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 9px;
    align-items: center;
    padding: 5px 8px;
    border-radius: 999px;
    background: rgb(21 33 29 / 66%);
    color: #ffffff;
    font-size: 11px;
  }

  .mobile-video-timeline input {
    width: 100%;
    min-width: 0;
  }

  .side-panel {
    position: fixed;
    top: 44px;
    right: 0;
    bottom: 0;
    z-index: 42;
    display: block;
    width: min(44vw, 300px);
    max-height: none;
    border-width: 0 0 0 1px;
    border-radius: 0;
    padding: 12px;
    overflow: auto;
    transform: translateX(105%);
    transition: transform 180ms ease;
    box-shadow: -12px 0 28px rgb(21 33 29 / 18%);
  }

  body.mobile-controls-open .side-panel {
    transform: translateX(0);
  }

  body:not(.mobile-controls-open) .side-panel {
    pointer-events: none;
  }

  .side-panel h2,
  .side-panel .chapter-label,
  .side-panel .narration-state,
  .side-panel .slide-visible-text,
  .side-panel .narration-text,
  .side-panel .check,
  .side-panel label.is-hidden {
    display: none !important;
  }

  .side-panel .field {
    margin-bottom: 10px;
    font-size: 13px;
  }

  .slide-audio-controls {
    width: 100%;
    height: 34px;
  }

  #courseControls.controls {
    display: none;
  }

  body.mobile-menu-open .chapter-panel {
    transform: none !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .course-layout {
    display: grid !important;
    grid-template-columns: 230px minmax(0, 1fr) !important;
    grid-template-rows: 1fr !important;
    gap: 0 !important;
    height: 100vh !important;
    padding-top: 0 !important;
  }

  #courseView .course-layout > .chapter-panel {
    position: relative !important;
    inset: auto !important;
    grid-column: 1 !important;
    grid-row: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    width: 230px !important;
    min-width: 230px !important;
    max-width: 230px !important;
    height: 100vh !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: auto !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
  }

  #courseView .course-layout > .stage {
    grid-column: 2 !important;
    grid-row: 1 !important;
    min-width: 0 !important;
  }

  #courseView .chapter-list {
    display: grid !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .mobile-course-bar {
    position: fixed !important;
    inset: auto 10px auto auto !important;
    z-index: 46 !important;
    display: block !important;
    width: auto !important;
    min-height: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  #courseView .mobile-course-title,
  #courseView .mobile-menu-button {
    display: none !important;
  }

  #courseView .mobile-controls-button {
    position: fixed !important;
    top: auto !important;
    bottom: 10px !important;
    right: 10px !important;
    z-index: 48 !important;
    display: inline-flex !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    border: 1px solid rgb(255 255 255 / 38%) !important;
    border-radius: 999px !important;
    padding: 0 !important;
    overflow: hidden !important;
    background: rgb(21 33 29 / 62%) !important;
    color: transparent !important;
    font-size: 0 !important;
    box-shadow: 0 8px 22px rgb(0 0 0 / 26%) !important;
  }

  #courseView .mobile-controls-button::before {
    content: "⚙";
    color: #ffffff;
    font-size: 21px;
    line-height: 1;
  }

  #courseView .stage,
  #courseView .slide-frame {
    height: 100vh !important;
  }

  #courseView .slide-frame {
    place-items: start center !important;
    align-items: start !important;
    justify-items: center !important;
    background: #050706 !important;
  }

  #courseView .slide-frame::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 19;
    height: 72px;
    pointer-events: none;
    background: linear-gradient(to top, rgb(0 0 0 / 78%), rgb(0 0 0 / 42%) 54%, transparent);
    opacity: 0;
    transition: opacity 0.18s ease;
  }

  #courseView .slide-frame:hover::after,
  #courseView .slide-frame.controls-visible::after,
  #courseView .slide-frame:focus-within::after {
    opacity: 1;
  }

  #courseView .slide-frame img {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    object-fit: contain !important;
    object-position: top center !important;
    align-self: start !important;
  }

  #courseView .mobile-video-controls {
    right: 74px !important;
    bottom: 24px !important;
    left: 10px !important;
    z-index: 22 !important;
    display: grid !important;
    grid-template-columns: 32px 1fr 88px 58px 88px 1fr !important;
    align-items: center !important;
    justify-content: stretch !important;
    gap: 6px !important;
    padding: 0 !important;
    pointer-events: auto !important;
    opacity: 0 !important;
    transform: translateY(8px) !important;
    transition: opacity 0.18s ease, transform 0.18s ease !important;
  }

  #courseView .slide-frame:hover .mobile-video-controls,
  #courseView .slide-frame.controls-visible .mobile-video-controls,
  #courseView .slide-frame:focus-within .mobile-video-controls,
  #courseView .mobile-video-controls:hover,
  #courseView .mobile-video-controls:focus-within {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  #courseView .mobile-video-controls button {
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    min-width: 0 !important;
    min-height: 28px !important;
    padding: 3px 7px !important;
    border: 1px solid rgb(255 255 255 / 32%) !important;
    border-radius: 10px !important;
    background: rgb(255 255 255 / 8%) !important;
    color: #ffffff !important;
    font-size: 13px !important;
    line-height: 1 !important;
    box-shadow: none !important;
    overflow: visible !important;
    white-space: nowrap !important;
  }

  #courseView .mobile-video-controls button::after {
    display: block;
    color: rgb(255 255 255 / 78%);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 1;
    white-space: nowrap;
  }

  #courseView #mobilePrevChapterButton::after {
    content: "Cap. back";
  }

  #courseView #mobilePrevButton::after {
    content: "Slide back";
  }

  #courseView #mobileNextButton::after {
    content: "Next slide";
  }

  #courseView #mobileNextChapterButton::after {
    content: "Next cap.";
  }

  #courseView #mobilePrevChapterButton,
  #courseView #mobileNextChapterButton {
    display: none !important;
  }

  #courseView #mobilePrevButton {
    grid-column: 3 !important;
    display: inline-flex !important;
    opacity: 1 !important;
    width: 88px !important;
    min-width: 88px !important;
    visibility: visible !important;
  }

  #courseView #mobileNextButton {
    grid-column: 5 !important;
    display: inline-flex !important;
    width: 88px !important;
    min-width: 88px !important;
  }

  #courseView #mobilePrevButton:disabled {
    display: inline-flex !important;
    opacity: 0.55 !important;
    visibility: visible !important;
  }

  #courseView .mobile-video-controls #mobilePlayButton {
    grid-column: 1 !important;
    min-width: 32px !important;
    width: 32px !important;
    height: 28px !important;
    background: rgb(206 90 40 / 88%) !important;
    font-size: 15px !important;
  }

  #courseView .mobile-video-controls #mobilePlayButton::after {
    content: "";
    display: none;
  }

  #courseView .mobile-slide-counter {
    grid-column: 4 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-height: 28px !important;
    min-width: 54px !important;
    padding: 0 7px !important;
    border: 1px solid rgb(255 255 255 / 24%) !important;
    border-radius: 10px !important;
    background: rgb(0 0 0 / 32%) !important;
    color: rgb(255 255 255 / 88%) !important;
    font-size: 10px !important;
    font-weight: 800 !important;
    line-height: 1 !important;
    white-space: nowrap !important;
  }

  #courseView .mobile-video-timeline {
    right: 74px !important;
    bottom: 5px !important;
    left: 10px !important;
    z-index: 23 !important;
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    opacity: 0 !important;
    transform: translateY(7px) !important;
    transition: opacity 0.18s ease, transform 0.18s ease !important;
  }

  #courseView .slide-frame:hover .mobile-video-timeline,
  #courseView .slide-frame.controls-visible .mobile-video-timeline,
  #courseView .slide-frame:focus-within .mobile-video-timeline,
  #courseView .mobile-video-timeline:hover,
  #courseView .mobile-video-timeline:focus-within {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  #courseView .mobile-video-timeline input {
    min-width: 0 !important;
  }

  #courseView .mobile-video-timeline span {
    min-width: 70px !important;
    color: rgb(255 255 255 / 82%) !important;
    font-size: 10px !important;
    text-align: right !important;
    white-space: nowrap !important;
  }

  #courseView .chapter-panel .panel-heading {
    display: none !important;
  }

  #courseView .chapter-panel {
    padding: 8px !important;
  }

  #courseView .chapter-button {
    min-height: 34px !important;
    padding: 7px 8px !important;
    font-size: 12px !important;
  }

  #participantView,
  #testView,
  #resultView {
    width: 100% !important;
    max-width: none !important;
    height: 100vh !important;
    overflow: auto !important;
    padding: 10px 12px 18px !important;
  }

  #participantView .test-top,
  #testView .test-top {
    position: static !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    align-items: center !important;
    gap: 8px !important;
    margin-bottom: 8px !important;
  }

  #participantView .test-top .eyebrow,
  #participantView .test-top h2,
  #testView .test-top .eyebrow {
    display: none !important;
  }

  #participantBackToCourse,
  #backToCourse {
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    border-radius: 999px !important;
    padding: 0 !important;
    overflow: hidden !important;
    color: transparent !important;
    font-size: 0 !important;
  }

  #participantBackToCourse::before,
  #backToCourse::before {
    content: "←";
    color: var(--ink);
    font-size: 24px;
    line-height: 1;
  }

  #participantView .protocol-form {
    gap: 8px !important;
    padding: 10px !important;
  }

  #participantView .protocol-form fieldset {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 7px 10px !important;
    padding: 10px !important;
  }

  #participantView .field {
    grid-template-columns: 145px minmax(0, 1fr) !important;
    align-items: center !important;
    gap: 8px !important;
    margin: 0 !important;
    font-size: 13px !important;
  }

  #participantView .protocol-check {
    display: grid !important;
    grid-template-columns: 28px minmax(0, 1fr) !important;
    align-items: center !important;
    gap: 8px !important;
    margin: 0 !important;
    padding: 8px 10px !important;
    line-height: 1.25 !important;
  }

  #participantView .protocol-check input {
    justify-self: end !important;
  }

  #participantView .protocol-actions {
    margin: 8px 0 0 !important;
  }

  #testView .question-card,
  #resultView .result-card {
    padding: 12px !important;
  }

  #testView .controls {
    position: static !important;
    display: flex !important;
    flex-wrap: nowrap !important;
    margin: 10px 0 0 !important;
    padding: 0 !important;
    border: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
  }

  #testView .controls button {
    flex: 1 1 0 !important;
    min-width: 0 !important;
    white-space: normal !important;
  }

  #resultView .result-card {
    min-height: 0 !important;
  }
}

@media (max-width: 759px) and (orientation: portrait) {
  #courseView .mobile-course-bar,
  #courseView .mobile-menu-backdrop,
  #courseView .side-panel,
  #courseControls {
    display: none !important;
  }

  #courseView .course-layout {
    display: flex !important;
    flex-direction: column !important;
    gap: 0 !important;
  }

  #courseView .stage {
    order: 1 !important;
    display: block !important;
    padding-bottom: 0 !important;
  }

  #courseView .slide-frame {
    min-height: 0 !important;
    border-radius: 0 !important;
  }

  #courseView .slide-frame img {
    width: 100% !important;
    height: auto !important;
    max-height: 58vh !important;
    object-fit: contain !important;
  }

  #courseView .mobile-video-controls {
    position: absolute;
    right: 8px;
    bottom: 42px;
    left: 8px;
    z-index: 20;
    display: flex !important;
    justify-content: center;
    gap: 6px;
    pointer-events: none;
  }

  #courseView .mobile-video-controls button {
    min-width: 36px;
    min-height: 34px;
    border: 1px solid rgb(255 255 255 / 38%);
    border-radius: 999px;
    padding: 0 8px;
    background: rgb(21 33 29 / 70%);
    color: #ffffff;
    box-shadow: 0 8px 18px rgb(0 0 0 / 24%);
    font-size: 12px;
    pointer-events: auto;
  }

  #courseView .mobile-video-controls #mobilePlayButton {
    min-width: 46px;
    background: rgb(206 90 40 / 88%);
    font-size: 17px;
  }

  #courseView .mobile-video-timeline {
    position: absolute;
    right: 10px;
    bottom: 8px;
    left: 10px;
    z-index: 21;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: center;
    padding: 5px 8px;
    border-radius: 999px;
    background: rgb(21 33 29 / 66%);
    color: #ffffff;
    font-size: 11px;
  }

  #courseView .mobile-video-timeline input {
    min-width: 0;
  }

  #courseView .chapter-panel {
    order: 2 !important;
    position: static !important;
    width: 100% !important;
    max-height: none !important;
    border-width: 1px 0 0 !important;
    border-radius: 0 !important;
    padding: 10px !important;
    transform: none !important;
    box-shadow: none !important;
  }

  #courseView .chapter-panel .panel-heading {
    display: block !important;
  }

  #courseView .chapter-list {
    max-height: none !important;
    overflow: visible !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .time-field,
  #courseView .slide-time-field,
  #courseView .chapter-time-field {
    display: none !important;
  }
}

/* Mobile landscape: compact chapter list only, without changing video frame. */
@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .chapter-panel {
    gap: 6px !important;
    padding: 5px 8px 6px !important;
  }

  #courseView .chapter-panel .panel-heading {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .chapter-panel .panel-heading .eyebrow {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .chapter-panel .panel-heading h2 {
    display: none !important;
  }

  #courseView .chapter-list {
    gap: 3px !important;
  }

  #courseView .chapter-button {
    min-height: 0 !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  #courseView .chapter-button span {
    margin-top: 1px !important;
  }

  #courseView #startFinalTest,
  #courseView #startAdminTest,
  #courseView #previewProtocolButton {
    min-height: 32px !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .mobile-video-controls {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
  }

  #courseView .mobile-video-controls #mobilePlayButton {
    position: absolute !important;
    left: 0 !important;
  }

  #courseView #mobilePrevButton {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 88px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 3px 7px !important;
    border: 1px solid rgb(255 255 255 / 32%) !important;
    border-radius: 10px !important;
    overflow: visible !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: #ffffff !important;
    font-size: 9px !important;
    font-weight: 700 !important;
    white-space: nowrap !important;
    background: rgb(255 255 255 / 8%) !important;
  }

  #courseView #mobilePrevButton::after {
    content: "" !important;
    display: none !important;
  }

  #courseView #mobilePrevButton:disabled {
    display: inline-flex !important;
    visibility: visible !important;
    opacity: 0.7 !important;
  }

  #courseView #mobilePrevButton .mobile-button-icon {
    display: inline-block !important;
    font-size: 15px !important;
    line-height: 1 !important;
  }

  #courseView .mobile-slide-counter {
    flex: 0 0 auto !important;
  }

  #courseView #mobileNextButton {
    display: inline-flex !important;
    flex: 0 0 auto !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #testView .controls {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 10px !important;
    align-items: center !important;
  }

  #testView .controls button {
    flex: 1 1 0 !important;
    min-width: 138px !important;
    min-height: 32px !important;
    padding: 0 12px !important;
    font-size: 12px !important;
    line-height: 1 !important;
    white-space: nowrap !important;
  }
}

#testView .controls {
  overflow: visible !important;
}

#testView .controls button,
#testView #nextQuestion,
#testView #finishTest {
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  color: var(--ink) !important;
}

@media (max-width: 759px), (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #testView {
    box-sizing: border-box !important;
    width: 100vw !important;
    max-width: 100vw !important;
    margin-right: 0 !important;
    margin-left: 0 !important;
    padding-right: 12px !important;
    padding-left: 12px !important;
    overflow-x: hidden !important;
  }

  #testView .test-top,
  #testView .question-card {
    box-sizing: border-box !important;
    width: 100% !important;
    max-width: 100% !important;
    margin-right: 0 !important;
    margin-left: 0 !important;
  }

  #testView .controls {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 6px !important;
    box-sizing: border-box !important;
    position: static !important;
    right: auto !important;
    left: auto !important;
    transform: none !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 10px 0 0 !important;
    padding: 0 !important;
    overflow: visible !important;
  }

  #testView .controls button,
  #testView #prevQuestion,
  #testView #nextQuestion,
  #testView #finishTest {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    min-height: 32px !important;
    box-sizing: border-box !important;
    padding: 0 6px !important;
    border: 1px solid var(--line) !important;
    border-radius: 8px !important;
    background: #ffffff !important;
    color: var(--ink) !important;
    flex: 1 1 0 !important;
    font-size: 10.5px !important;
    line-height: 1 !important;
    white-space: nowrap !important;
    overflow: visible !important;
    text-overflow: clip !important;
  }
}

/* Unified course video player used on desktop, tablet and mobile. */
#courseView .stage {
  display: block !important;
  min-width: 0 !important;
}

#courseView .slide-frame {
  position: relative !important;
  overflow: hidden !important;
  background: #050706 !important;
}

#courseView .slide-frame::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 19;
  height: 86px;
  pointer-events: none;
  background: linear-gradient(to top, rgb(0 0 0 / 78%), rgb(0 0 0 / 42%) 58%, transparent);
  opacity: 0;
  transition: opacity 0.18s ease;
}

#courseView .slide-frame:hover::after,
#courseView .slide-frame.controls-visible::after,
#courseView .slide-frame:focus-within::after {
  opacity: 1;
}

#courseView .mobile-course-bar {
  position: fixed !important;
  inset: auto 10px 10px auto !important;
  z-index: 48 !important;
  display: block !important;
  width: auto !important;
  min-height: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

#courseView .mobile-course-title,
#courseView .mobile-menu-button {
  display: none !important;
}

#courseView .mobile-controls-button {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 42px !important;
  min-width: 42px !important;
  height: 42px !important;
  min-height: 42px !important;
  border: 1px solid rgb(255 255 255 / 38%) !important;
  border-radius: 999px !important;
  padding: 0 !important;
  overflow: hidden !important;
  background: rgb(21 33 29 / 62%) !important;
  color: transparent !important;
  font-size: 0 !important;
  box-shadow: 0 8px 22px rgb(0 0 0 / 26%) !important;
}

#courseView .mobile-controls-button::before {
  content: "⚙";
  color: #ffffff;
  font-size: 21px;
  line-height: 1;
}

#courseControls.controls {
  display: none !important;
}

#courseView .side-panel {
  position: fixed !important;
  top: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  z-index: 42 !important;
  display: block !important;
  width: min(420px, 86vw) !important;
  max-height: none !important;
  border-width: 0 0 0 1px !important;
  border-radius: 0 !important;
  padding: 16px !important;
  overflow: auto !important;
  transform: translateX(105%) !important;
  transition: transform 180ms ease !important;
  box-shadow: -12px 0 28px rgb(21 33 29 / 18%) !important;
}

body.mobile-controls-open #courseView .side-panel {
  transform: translateX(0) !important;
}

body:not(.mobile-controls-open) #courseView .side-panel {
  pointer-events: none !important;
}

#courseView .mobile-video-controls {
  position: absolute !important;
  right: 74px !important;
  bottom: 24px !important;
  left: 10px !important;
  z-index: 22 !important;
  display: grid !important;
  grid-template-columns: 32px 1fr 88px 58px 88px 1fr !important;
  align-items: center !important;
  justify-content: stretch !important;
  gap: 6px !important;
  padding: 0 !important;
  pointer-events: auto !important;
  opacity: 0 !important;
  transform: translateY(8px) !important;
  transition: opacity 0.18s ease, transform 0.18s ease !important;
}

#courseView .slide-frame:hover .mobile-video-controls,
#courseView .slide-frame.controls-visible .mobile-video-controls,
#courseView .slide-frame:focus-within .mobile-video-controls,
#courseView .mobile-video-controls:hover,
#courseView .mobile-video-controls:focus-within {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

#courseView .mobile-video-controls button {
  display: inline-flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 4px !important;
  min-width: 0 !important;
  min-height: 28px !important;
  padding: 3px 7px !important;
  border: 1px solid rgb(255 255 255 / 32%) !important;
  border-radius: 10px !important;
  background: rgb(255 255 255 / 8%) !important;
  color: #ffffff !important;
  font-size: 13px !important;
  line-height: 1 !important;
  box-shadow: none !important;
  overflow: visible !important;
  white-space: nowrap !important;
}

#courseView #mobilePrevChapterButton,
#courseView #mobileNextChapterButton {
  display: none !important;
}

#courseView #mobilePrevButton {
  grid-column: 3 !important;
  display: inline-flex !important;
  width: 88px !important;
  min-width: 88px !important;
  visibility: visible !important;
}

#courseView #mobilePrevButton:disabled {
  display: inline-flex !important;
  opacity: 0.55 !important;
  visibility: visible !important;
}

#courseView #mobileNextButton {
  grid-column: 5 !important;
  display: inline-flex !important;
  width: 88px !important;
  min-width: 88px !important;
}

#courseView .mobile-video-controls #mobilePlayButton {
  grid-column: 1 !important;
  min-width: 32px !important;
  width: 32px !important;
  height: 28px !important;
  background: rgb(206 90 40 / 88%) !important;
  font-size: 15px !important;
}

#courseView .mobile-slide-counter {
  grid-column: 4 !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 28px !important;
  min-width: 54px !important;
  padding: 0 7px !important;
  border: 1px solid rgb(255 255 255 / 24%) !important;
  border-radius: 10px !important;
  background: rgb(0 0 0 / 32%) !important;
  color: rgb(255 255 255 / 88%) !important;
  font-size: 10px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  white-space: nowrap !important;
}

#courseView .mobile-video-timeline {
  position: absolute !important;
  right: 74px !important;
  bottom: 5px !important;
  left: 10px !important;
  z-index: 23 !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  opacity: 0 !important;
  transform: translateY(7px) !important;
  transition: opacity 0.18s ease, transform 0.18s ease !important;
}

#courseView .slide-frame:hover .mobile-video-timeline,
#courseView .slide-frame.controls-visible .mobile-video-timeline,
#courseView .slide-frame:focus-within .mobile-video-timeline,
#courseView .mobile-video-timeline:hover,
#courseView .mobile-video-timeline:focus-within {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

#courseView .mobile-video-timeline input {
  min-width: 0 !important;
}

#courseView .mobile-video-timeline span {
  min-width: 70px !important;
  color: rgb(255 255 255 / 82%) !important;
  font-size: 10px !important;
  text-align: right !important;
  white-space: nowrap !important;
}

@media (min-width: 760px) and (min-height: 651px) {
  #courseView .course-layout {
    display: grid !important;
    grid-template-columns: 300px minmax(0, 1fr) !important;
    grid-template-rows: auto !important;
    gap: 16px !important;
    align-items: start !important;
  }

  #courseView .course-layout > .chapter-panel {
    grid-column: 1 !important;
    grid-row: 1 !important;
    width: 100% !important;
    max-height: calc(100vh - 154px) !important;
  }

  #courseView .course-layout > .stage {
    grid-column: 2 !important;
    grid-row: 1 !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  #courseView .slide-frame {
    grid-column: auto !important;
    grid-row: auto !important;
    width: 100% !important;
    min-height: min(72vh, 780px) !important;
  }

  #courseView .slide-frame img {
    width: 100% !important;
    height: 100% !important;
    max-height: min(72vh, 780px) !important;
    object-fit: contain !important;
  }
}

@media (max-width: 759px) {
  #courseView .mobile-video-controls {
    right: 8px !important;
    bottom: 42px !important;
    left: 8px !important;
    display: flex !important;
    justify-content: center !important;
    gap: 6px !important;
  }

  #courseView .mobile-video-timeline {
    right: 10px !important;
    bottom: 8px !important;
    left: 10px !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    gap: 8px !important;
    padding: 5px 8px !important;
    border-radius: 999px !important;
    background: rgb(21 33 29 / 66%) !important;
  }

  #courseView #mobilePrevButton,
  #courseView #mobileNextButton {
    width: auto !important;
    min-width: 42px !important;
  }

  #courseView #mobilePrevButton span:not(.mobile-button-icon) {
    display: none !important;
  }

  #courseView .mobile-slide-counter {
    min-width: 58px !important;
  }
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  #courseView .slide-frame img {
    width: 100% !important;
    height: calc(100% - 31px) !important;
    max-height: none !important;
    object-fit: fill !important;
    object-position: top center !important;
    align-self: start !important;
  }

  #courseView .slide-frame::after {
    height: 58px !important;
    background: linear-gradient(to top, #050706 0 53%, rgb(5 7 6 / 72%) 72%, rgb(5 7 6 / 26%) 90%, transparent 100%) !important;
  }
}

/* Mobile portrait: keep video controls in a black bar below the slide image. */
@media (max-width: 759px) and (orientation: portrait) {
  #courseView {
    position: relative !important;
  }

  #courseView .slide-frame {
    box-sizing: border-box !important;
    min-height: 0 !important;
    padding-bottom: 21px !important;
    border-radius: 0 !important;
    background: #050706 !important;
  }

  #courseView .slide-frame::after {
    height: 40px !important;
    background: linear-gradient(to top, rgb(5 7 6 / 92%) 0%, rgb(5 7 6 / 66%) 52%, rgb(5 7 6 / 22%) 82%, transparent 100%) !important;
    opacity: 0 !important;
    transform: translateY(12px) !important;
    transition: opacity 0.18s ease, transform 0.18s ease !important;
  }

  #courseView .slide-frame:hover::after,
  #courseView .slide-frame.controls-visible::after,
  #courseView .slide-frame:focus-within::after {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  #courseView .slide-frame img {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    max-height: 58vh !important;
    object-fit: contain !important;
    object-position: top center !important;
  }

  #courseView .mobile-video-controls {
    right: 8px !important;
    bottom: 15px !important;
    left: 8px !important;
    z-index: 22 !important;
    display: grid !important;
    grid-template-columns: 42px minmax(0, 1fr) 42px 58px 42px minmax(0, 1fr) 42px !important;
    align-items: center !important;
    justify-content: stretch !important;
    gap: 6px !important;
    opacity: 0 !important;
    transform: translateY(7px) !important;
    transition: opacity 0.18s ease, transform 0.18s ease !important;
  }

  #courseView .mobile-video-controls #mobilePlayButton {
    grid-column: 1 !important;
    grid-row: 1 !important;
    justify-self: start !important;
    width: 32px !important;
    min-width: 32px !important;
    height: 28px !important;
    min-height: 28px !important;
  }

  #courseView #mobilePrevButton {
    grid-column: 3 !important;
    grid-row: 1 !important;
    justify-self: center !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 0 !important;
  }

  #courseView .mobile-slide-counter {
    grid-column: 4 !important;
    grid-row: 1 !important;
    justify-self: center !important;
    height: 28px !important;
    min-height: 28px !important;
  }

  #courseView #mobileNextButton {
    grid-column: 5 !important;
    grid-row: 1 !important;
    justify-self: center !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 0 !important;
  }

  #courseView .mobile-video-timeline {
    right: 58px !important;
    bottom: 1px !important;
    left: 10px !important;
    z-index: 23 !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    gap: 8px !important;
    align-items: center !important;
    min-height: 22px !important;
    padding: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    opacity: 0 !important;
    transform: translateY(7px) !important;
    transition: opacity 0.18s ease, transform 0.18s ease !important;
  }

  #courseView .slide-frame:hover .mobile-video-controls,
  #courseView .slide-frame.controls-visible .mobile-video-controls,
  #courseView .slide-frame:focus-within .mobile-video-controls,
  #courseView .mobile-video-controls:hover,
  #courseView .mobile-video-controls:focus-within,
  #courseView .slide-frame:hover .mobile-video-timeline,
  #courseView .slide-frame.controls-visible .mobile-video-timeline,
  #courseView .slide-frame:focus-within .mobile-video-timeline,
  #courseView .mobile-video-timeline:hover,
  #courseView .mobile-video-timeline:focus-within {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  #courseView .mobile-course-bar {
    position: absolute !important;
    top: calc((100vw * 9 / 16) - 18px) !important;
    right: 8px !important;
    bottom: auto !important;
    left: auto !important;
    z-index: 48 !important;
    display: block !important;
    width: auto !important;
    min-height: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  #courseView .mobile-controls-button {
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
  }

  #courseView .chapter-panel .panel-heading h2 {
    display: none !important;
  }

  #courseView .chapter-panel .panel-heading .eyebrow {
    display: block !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
  }

  #courseView .chapter-panel {
    gap: 6px !important;
    padding-top: 5px !important;
    padding-bottom: 6px !important;
  }

  #courseView .chapter-panel .panel-heading {
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .chapter-list {
    gap: 3px !important;
  }

  #courseView .chapter-button {
    min-height: 0 !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  #courseView .chapter-button span {
    margin-top: 1px !important;
  }

  #courseView #startFinalTest,
  #courseView #startAdminTest,
  #courseView #previewProtocolButton {
    min-height: 32px !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }
}



/* Final override: mobile portrait participant form starts at the top. */
@media (max-width: 759px) and (orientation: portrait) {
  #participantView {
    position: relative !important;
    box-sizing: border-box !important;
    width: 100% !important;
    max-width: none !important;
    min-height: 100vh !important;
    padding: 8px 10px 16px !important;
    overflow: auto !important;
  }

  #participantView .test-top {
    position: static !important;
    display: block !important;
    height: 0 !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #participantView .test-top > div {
    display: none !important;
  }

  #participantBackToCourse {
    position: absolute !important;
    top: 8px !important;
    right: 10px !important;
    z-index: 10 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    border-radius: 999px !important;
    padding: 0 !important;
    overflow: hidden !important;
    color: transparent !important;
    font-size: 0 !important;
  }

  #participantBackToCourse::before {
    content: "←" !important;
    color: var(--ink) !important;
    font-size: 24px !important;
    line-height: 1 !important;
  }

  #participantView .protocol-form {
    margin-top: 0 !important;
    gap: 8px !important;
    padding: 10px !important;
  }
}

/* Final override: desktop full-screen video canvas. */
@media (min-width: 900px) and (min-height: 651px) {
  .video-app {
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
  }

  .video-header {
    display: none !important;
  }

  #courseView .course-layout {
    display: block !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .stage {
    position: fixed !important;
    inset: 0 !important;
    z-index: 5 !important;
    display: block !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .slide-frame {
    width: 100vw !important;
    height: 100vh !important;
    min-height: 100vh !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: #050706 !important;
  }

  #courseView .slide-frame img {
    display: block !important;
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    max-height: none !important;
    object-fit: contain !important;
    object-position: center center !important;
  }

  #courseView .slide-frame::after {
    height: 78px !important;
    background: linear-gradient(to top, rgb(0 0 0 / 82%), rgb(0 0 0 / 44%) 58%, transparent) !important;
  }

  #courseView .mobile-course-bar {
    position: fixed !important;
    inset: auto 10px 10px auto !important;
  }

  #courseView .mobile-video-controls {
    right: 74px !important;
    bottom: 24px !important;
    left: 10px !important;
  }

  #courseView .mobile-video-timeline {
    right: 74px !important;
    bottom: 5px !important;
    left: 10px !important;
  }
}

/* Final override: desktop two-column course layout with 16:9 video. */
@media (min-width: 900px) and (min-height: 651px) {
  .video-app {
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
  }

  .video-header {
    display: none !important;
  }

  #courseView .course-layout {
    display: grid !important;
    grid-template-columns: 300px minmax(0, 1fr) !important;
    grid-template-rows: 100vh !important;
    gap: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
  }

  #courseView .chapter-panel {
    position: relative !important;
    inset: auto !important;
    grid-column: 1 !important;
    grid-row: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    width: 300px !important;
    min-width: 300px !important;
    max-width: 300px !important;
    height: 100vh !important;
    max-height: none !important;
    margin: 0 !important;
    padding: 8px !important;
    border-width: 0 1px 0 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    overflow: hidden !important;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  #courseView .chapter-panel .panel-heading {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .chapter-panel .panel-heading .eyebrow {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  #courseView .chapter-panel .panel-heading h2 {
    display: none !important;
  }

  #courseView .chapter-list {
    display: grid !important;
    gap: 3px !important;
    min-height: 0 !important;
    overflow: hidden !important;
    padding-right: 0 !important;
  }

  #courseView .chapter-button {
    min-height: 0 !important;
    padding: 4px 8px !important;
    font-size: 12px !important;
    line-height: 1.15 !important;
  }

  #courseView .chapter-button span {
    margin-top: 1px !important;
  }

  #courseView #startFinalTest,
  #courseView #startAdminTest,
  #courseView #previewProtocolButton {
    min-height: 32px !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  #courseView .stage {
    position: relative !important;
    inset: auto !important;
    grid-column: 2 !important;
    grid-row: 1 !important;
    z-index: 5 !important;
    display: block !important;
    width: calc(100vw - 300px) !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
  }

  #courseView .slide-frame {
    width: 100% !important;
    height: min(100vh, calc((100vw - 300px) * 9 / 16 + 45px)) !important;
    min-height: 0 !important;
    margin: 0 !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: #050706 !important;
    place-items: start center !important;
  }

  #courseView .slide-frame img {
    display: block !important;
    width: 100% !important;
    height: calc((100vw - 300px) * 9 / 16) !important;
    min-height: 0 !important;
    max-height: calc(100vh - 45px) !important;
    object-fit: contain !important;
    object-position: top center !important;
  }

  #courseView .slide-frame::after {
    height: 78px !important;
    background: linear-gradient(to top, rgb(0 0 0 / 82%), rgb(0 0 0 / 44%) 58%, transparent) !important;
  }

  #courseView .mobile-course-bar {
    position: fixed !important;
    inset: auto 10px 10px auto !important;
  }

  #courseView .mobile-video-controls {
    right: 74px !important;
    bottom: 24px !important;
    left: 10px !important;
  }

  #courseView .mobile-video-timeline {
    right: 74px !important;
    bottom: 5px !important;
    left: 10px !important;
  }
}

/* Final override: desktop chapter panel full height. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .course-layout > .chapter-panel {
    position: relative !important;
    inset: auto !important;
    grid-column: 1 !important;
    grid-row: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    width: 300px !important;
    min-width: 300px !important;
    max-width: 300px !important;
    height: 100vh !important;
    min-height: 100vh !important;
    max-height: 100vh !important;
    margin: 0 !important;
    padding: 8px !important;
    border-width: 0 1px 0 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    overflow: hidden !important;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  #courseView .course-layout > .chapter-panel .chapter-list {
    flex: 1 1 auto !important;
    align-content: start !important;
    min-height: 0 !important;
    overflow: hidden !important;
  }
}

/* Final override: desktop video top and bottom black bars. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .slide-frame {
    --desktop-video-bar: 50px;
    display: block !important;
    height: min(100vh, calc((100vw - 300px) * 9 / 16 + (var(--desktop-video-bar) * 2))) !important;
    padding-top: var(--desktop-video-bar) !important;
    box-sizing: border-box !important;
    background: #050706 !important;
  }

  #courseView .slide-frame img {
    display: block !important;
    width: 100% !important;
    height: min(calc((100vw - 300px) * 9 / 16), calc(100vh - (var(--desktop-video-bar) * 2))) !important;
    min-height: 0 !important;
    max-height: none !important;
    object-fit: contain !important;
    object-position: top center !important;
  }

  #courseView .slide-frame::after {
    height: calc(var(--desktop-video-bar) + 34px) !important;
    background: linear-gradient(to top, #050706 0 58%, rgb(5 7 6 / 72%) 76%, rgb(5 7 6 / 26%) 92%, transparent 100%) !important;
  }
}

/* Final override: desktop 16:9 image vertically centered with equal black bars. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .slide-frame {
    --desktop-video-width: calc(100vw - 300px);
    --desktop-image-height: min(calc(var(--desktop-video-width) * 9 / 16), 100vh);
    --desktop-video-bar: max(0px, calc((100vh - var(--desktop-image-height)) / 2));
    display: block !important;
    width: 100% !important;
    height: 100vh !important;
    min-height: 100vh !important;
    padding-top: var(--desktop-video-bar) !important;
    box-sizing: border-box !important;
    background: #050706 !important;
  }

  #courseView .slide-frame img {
    display: block !important;
    width: 100% !important;
    height: var(--desktop-image-height) !important;
    min-height: 0 !important;
    max-height: none !important;
    object-fit: contain !important;
    object-position: center center !important;
  }

  #courseView .slide-frame::after {
    height: calc(var(--desktop-video-bar) + 34px) !important;
    background: linear-gradient(to top, #050706 0 58%, rgb(5 7 6 / 72%) 76%, rgb(5 7 6 / 26%) 92%, transparent 100%) !important;
  }
}

/* Final override: desktop timeline spans to the settings icon. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .mobile-video-timeline {
    left: 10px !important;
    right: 62px !important;
    bottom: 10px !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    padding: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  #courseView .mobile-video-timeline input {
    flex: 1 1 auto !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  #courseView .mobile-video-timeline span {
    flex: 0 0 auto !important;
    min-width: 78px !important;
    color: rgb(255 255 255 / 82%) !important;
    font-size: 11px !important;
    text-align: right !important;
    white-space: nowrap !important;
  }
}

/* Final override: desktop slide navigation buttons aligned on one row. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .mobile-video-controls {
    display: grid !important;
    grid-template-columns: 32px minmax(0, 1fr) 88px 58px 88px minmax(0, 1fr) !important;
    align-items: center !important;
    justify-content: stretch !important;
  }

  #courseView .mobile-video-controls #mobilePlayButton,
  #courseView #mobilePrevButton,
  #courseView .mobile-slide-counter,
  #courseView #mobileNextButton {
    grid-row: 1 !important;
    align-self: center !important;
  }

  #courseView #mobilePrevButton,
  #courseView #mobileNextButton {
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    width: 88px !important;
    min-width: 88px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 3px 7px !important;
    white-space: nowrap !important;
  }

  #courseView #mobilePrevButton {
    grid-column: 3 !important;
  }

  #courseView #mobileNextButton {
    grid-column: 5 !important;
  }

  #courseView .mobile-slide-counter {
    grid-column: 4 !important;
  }
}

/* Final override: desktop control row vertical tuning. */
@media (min-width: 900px) and (min-height: 651px) {
  #courseView .mobile-video-controls {
    bottom: 42px !important;
  }

  #courseView .mobile-video-timeline {
    bottom: 16px !important;
  }

  #courseView .mobile-course-bar {
    inset: auto 10px 16px auto !important;
  }
}

/* Final override: desktop participant form starts directly with participant fields. */
@media (min-width: 900px) and (min-height: 651px) {
  #participantView .test-top {
    display: none !important;
  }

  #participantView .protocol-form {
    margin-top: 0 !important;
  }
}

/* Final override: result screen must always scroll to all actions. */
#resultView {
  min-height: 100svh !important;
  height: auto !important;
  max-height: none !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  align-items: flex-start !important;
}

#resultView .result-card {
  max-height: none !important;
  overflow: visible !important;
  margin-bottom: 28px !important;
}

/* Final override: when result screen is active, unlock the app wrapper itself. */
body.result-screen-active {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

body.result-screen-active .video-app {
  height: auto !important;
  min-height: 100svh !important;
  overflow: visible !important;
}

body.result-screen-active #resultView {
  display: block !important;
  width: min(100% - 32px, 1180px) !important;
  min-height: auto !important;
  margin: 0 auto !important;
  padding: 18px 0 36px !important;
  overflow: visible !important;
}

/* Final override: hard unlock document scrolling on result screen. */
html.result-screen-active,
body.result-screen-active {
  height: auto !important;
  min-height: 100svh !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

html.result-screen-active body {
  height: auto !important;
  min-height: 100svh !important;
}

html.result-screen-active .video-app,
body.result-screen-active .video-app {
  position: static !important;
  height: auto !important;
  min-height: 100svh !important;
  max-height: none !important;
  overflow: visible !important;
}

/* Final override: remove obsolete chapter jump buttons from video overlay. */
#courseView #mobilePrevChapterButton,
#courseView #mobileNextChapterButton {
  display: none !important;
}

/* Final override: remove generated duplicate labels over video controls. */
#courseView .mobile-video-controls button::after,
#courseView #mobilePrevButton::after,
#courseView #mobileNextButton::after {
  content: none !important;
  display: none !important;
}

/* Final override: equal compact typography for slide back and slide next. */
#courseView #mobilePrevButton,
#courseView #mobileNextButton {
  font-size: 10px !important;
}

#courseView #mobilePrevButton .mobile-button-icon,
#courseView #mobileNextButton .mobile-button-icon {
  font-size: 15px !important;
  line-height: 1 !important;
}

#courseView #mobilePrevButton span:not(.mobile-button-icon),
#courseView #mobileNextButton span:not(.mobile-button-icon) {
  font-size: 10px !important;
  line-height: 1 !important;
}

/* Final override: mobile portrait slide buttons show icon and text inside. */
@media (max-width: 759px) and (orientation: portrait) {
  #courseView .mobile-video-controls {
    grid-template-columns: 34px minmax(0, 1fr) 86px 56px 86px minmax(0, 1fr) !important;
    gap: 5px !important;
  }

  #courseView #mobilePrevButton,
  #courseView #mobileNextButton {
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    width: 86px !important;
    min-width: 86px !important;
    max-width: 86px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 3px 6px !important;
    overflow: hidden !important;
    white-space: nowrap !important;
  }

  #courseView #mobilePrevButton {
    grid-column: 3 !important;
  }

  #courseView #mobileNextButton {
    grid-column: 5 !important;
  }

  #courseView #mobilePrevButton span:not(.mobile-button-icon),
  #courseView #mobileNextButton span:not(.mobile-button-icon) {
    display: inline !important;
    font-size: 10px !important;
    line-height: 1 !important;
  }

  #courseView #mobilePrevButton .mobile-button-icon,
  #courseView #mobileNextButton .mobile-button-icon {
    flex: 0 0 auto !important;
    font-size: 15px !important;
    line-height: 1 !important;
  }
}

/* Final override: admin uses participant layout, access and all-questions are extra. */
body.role-admin .admin-only:not(#startAdminTest):not(#adminAccessButton) {
  display: none !important;
}

/* Final override: access-code prototype layout. */
.login-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 16px;
  width: min(960px, 100%);
}

.login-stack .login-card {
  width: 100%;
}

.access-card {
  align-self: start;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.login-error.is-ok {
  border-left-color: var(--ok);
  background: #edf7f1;
  color: var(--ok);
}

.admin-code-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
  margin-bottom: 14px;
}

.admin-access-table-wrap {
  max-height: min(58vh, 520px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.admin-access-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  font-size: 14px;
}

.admin-access-table th,
.admin-access-table td {
  border-bottom: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.admin-access-table th {
  position: sticky;
  top: 0;
  background: var(--header);
  color: #ffffff;
  z-index: 1;
}

@media (max-width: 759px) {
  .login-stack,
  .admin-code-form {
    grid-template-columns: 1fr;
  }
}



/* Final override: login and registration must scroll on every device. */
body.login-screen-active {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

body.login-screen-active .video-app {
  height: auto !important;
  min-height: 100svh !important;
  overflow: visible !important;
  padding: 12px 10px 28px !important;
}

body.login-screen-active .login-view {
  min-height: auto !important;
  align-items: start !important;
  justify-items: center !important;
  padding: 8px 0 24px !important;
  overflow: visible !important;
}

body.login-screen-active .login-stack {
  align-items: start !important;
}

@media (max-width: 1400px) and (max-height: 650px) and (orientation: landscape) {
  body.login-screen-active .login-stack {
    grid-template-columns: repeat(3, minmax(220px, 1fr)) !important;
    gap: 10px !important;
    width: 100% !important;
  }

  body.login-screen-active .login-card {
    gap: 8px !important;
    padding: 12px !important;
    border-radius: 10px !important;
  }

  body.login-screen-active .login-card h2 {
    margin: 0 !important;
    font-size: 17px !important;
  }

  body.login-screen-active .login-card .field,
  body.login-screen-active .login-card .check {
    gap: 5px !important;
    font-size: 12px !important;
    line-height: 1.2 !important;
  }

  body.login-screen-active .login-card input {
    min-height: 32px !important;
  }

  body.login-screen-active .login-card button {
    min-height: 34px !important;
    padding: 0 10px !important;
    font-size: 12px !important;
  }
}

/* Final override: local admin result evidence. */
.admin-access-card h3:not(:first-child) {
  margin-top: 22px;
}

.admin-access-table small {
  color: var(--muted);
}

/* Final override: detailed admin result and stored protocol view. */
.admin-result-detail {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: #fbfdfc;
}

.admin-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 14px;
  margin: 10px 0 14px;
  font-size: 14px;
}

.admin-protocol-source {
  width: 100%;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  line-height: 1.35;
  resize: vertical;
}

.admin-result-detail-button {
  min-height: 30px;
  padding: 0 10px;
  font-size: 12px;
}

@media (max-width: 759px) {
  .admin-result-grid {
    grid-template-columns: 1fr;
  }
}

/* Final override: admin access screen must scroll on desktop and mobile. */
body.admin-access-screen-active {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

body.admin-access-screen-active .video-app {
  height: auto !important;
  min-height: 100svh !important;
  overflow: visible !important;
  padding: 16px 14px 36px !important;
}

body.admin-access-screen-active #adminAccessView {
  display: block !important;
  width: min(100% - 20px, 1280px) !important;
  max-width: 1280px !important;
  margin: 0 auto !important;
  padding: 0 0 36px !important;
  overflow: visible !important;
}

/* Final override: separated protocol output actions. */
.protocol-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.protocol-action-buttons button {
  flex: 1 1 190px;
}