:root {
  --brand-dark: #0076a8;
  --brand-darker: #006694;
  --brand-mid: #477dbb;
  --brand-soft: #eaf3fb;
  --line: #b9c1cb;
  --ink: #111111;
  --muted: #5d6672;
  --panel: #ffffff;
  --page: #f5f7fa;
  --danger: #b10000;
  --success: #1d7f43;
  --warning: #fff86b;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="file"],
label {
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.site-nav {
  border-bottom: 1px solid #d6dbe2;
  background: #ffffff;
}

.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  min-height: 48px;
}

.site-title {
  color: #1d334c;
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
}

.site-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.site-links a {
  border: 1px solid transparent;
  border-radius: 6px;
  color: #385170;
  padding: 8px 10px;
  text-decoration: none;
}

.site-links a:hover,
.site-links a:focus-visible,
.site-links a[aria-current="page"] {
  border-color: #c6d3e0;
  background: #f2f6fa;
  color: #10263d;
  outline: none;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.page-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.page-heading h1 {
  margin: 0 0 6px;
  color: #13263b;
  font-size: 30px;
  line-height: 1.15;
}

.page-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.panel {
  border: 1px solid #d6dce4;
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(28, 45, 66, 0.08);
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(280px, 720px);
  gap: 22px;
  align-items: start;
}

.selection-panel {
  padding: 28px;
}

.selection-panel label,
.field label,
.compact-field label {
  display: block;
  margin-bottom: 8px;
  color: #26394e;
  font-weight: 700;
}

.field {
  margin-bottom: 18px;
}

.compact-field {
  margin-bottom: 12px;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.flow-section {
  margin-top: 18px;
}

.field-hint {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.selected-test-label {
  border: 1px solid #aeb8c5;
  border-radius: 6px;
  background: #f8fbfe;
  color: #111111;
  margin-bottom: 12px;
  padding: 12px 14px;
  font-size: 20px;
  font-weight: 700;
}

.button-stack {
  display: grid;
  gap: 10px;
}

.file-action-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.test-select,
.text-input,
.textarea,
.select-input {
  width: 100%;
  border: 1px solid #aeb8c5;
  border-radius: 6px;
  background: #ffffff;
  color: #111111;
}

.test-select {
  min-height: 64px;
  padding: 0 18px;
  font-size: 20px;
  font-weight: 700;
}

.text-input,
.select-input {
  min-height: 42px;
  padding: 8px 10px;
}

.textarea {
  min-height: 190px;
  padding: 10px;
  resize: vertical;
  line-height: 1.45;
}

.primary-button,
.secondary-button,
.ghost-button,
.exam-button,
.tool-button,
.small-button {
  border: 1px solid transparent;
  border-radius: 6px;
  min-height: 40px;
  padding: 8px 14px;
  text-align: center;
}

.primary-button {
  background: var(--brand-dark);
  color: #ffffff;
  font-weight: 700;
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--brand-darker);
}

.secondary-button {
  border-color: #aeb8c5;
  background: #ffffff;
  color: #172c43;
}

.secondary-button:hover,
.secondary-button:focus-visible {
  background: #f2f6fa;
}

.secondary-button.is-active {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
  color: #0b5075;
  font-weight: 700;
}

.ghost-button {
  background: transparent;
  color: #29435f;
}

.ghost-button:hover,
.ghost-button:focus-visible {
  background: #edf3f8;
}

.small-button {
  min-height: 32px;
  padding: 4px 9px;
}

.button-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-actions {
  flex: 0 0 auto;
}

.full-width-button {
  width: 100%;
  margin-bottom: 10px;
}

.status-line {
  min-height: 22px;
  color: var(--muted);
  line-height: 1.4;
}

.status-error {
  color: var(--danger);
}

.status-ok {
  color: var(--success);
}

.summary-panel {
  padding: 22px;
}

.summary-panel h2,
.panel-title {
  margin: 0 0 12px;
  color: #172c43;
  font-size: 20px;
}

.summary-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.summary-list li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid #e2e6eb;
  padding: 11px 0;
}

.summary-list li:first-child {
  border-top: 0;
}

.summary-list span:first-child {
  color: var(--muted);
}

body.exam-active {
  overflow: hidden;
  background: #ffffff;
}

body.exam-active .site-nav,
body.exam-active .page-shell {
  display: none;
}

.exam-shell {
  display: none;
  height: 100vh;
  background: #ffffff;
}

body.exam-active .exam-shell {
  display: flex;
  flex-direction: column;
}

.exam-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
  background: var(--brand-dark);
  color: #ffffff;
  padding: 0 8px;
  font-size: 22px;
  line-height: 1;
}

.exam-titlebar-title {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.exam-counter {
  flex: 0 0 auto;
  font-size: 16px;
}

.exam-toolsbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 31px;
  background: var(--brand-mid);
  color: #ffffff;
}

.exam-tools-left,
.exam-tools-right {
  display: flex;
  align-items: center;
  min-width: 0;
}

.tool-button {
  border-radius: 0;
  background: transparent;
  color: #ffffff;
  min-height: 31px;
  padding: 4px 7px;
  text-decoration: underline;
}

.tool-button:hover,
.tool-button:focus-visible {
  background: rgba(0, 0, 0, 0.12);
}

.color-scheme {
  width: 195px;
  min-height: 31px;
  border: 1px solid #101820;
  border-radius: 0;
  background: var(--brand-mid);
  color: #ffffff;
  padding-left: 8px;
}

.exam-content {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 18px 14px 70px;
}

.instruction-logo {
  display: flex;
  justify-content: center;
  margin: 10px 0 22px;
}

.uat-mark {
  display: grid;
  grid-template-columns: repeat(3, 90px) 150px;
  align-items: center;
  gap: 10px;
}

.uat-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 198px;
  border-radius: 44px;
  color: #ffffff;
  font-size: 74px;
  font-weight: 700;
}

.uat-orange {
  background: #ff6500;
}

.uat-green {
  background: #21a870;
}

.uat-purple {
  background: #982a98;
}

.uat-text {
  color: #5c708b;
  font-size: 26px;
  font-weight: 700;
  line-height: 0.96;
}

.uat-text strong {
  display: block;
  color: #21334c;
  font-size: 74px;
  letter-spacing: 0;
  line-height: 1;
}

.instruction-copy {
  max-width: 1480px;
  white-space: pre-wrap;
  line-height: 1.45;
}

.instruction-table {
  border-collapse: collapse;
  margin-bottom: 18px;
  min-width: 305px;
}

.instruction-table th,
.instruction-table td {
  border: 1px solid #111111;
  padding: 4px 14px;
  text-align: center;
}

.exam-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  min-height: 36px;
  background: var(--brand-dark);
  color: #ffffff;
}

.exam-footer-left,
.exam-footer-right {
  display: flex;
  align-items: stretch;
}

.exam-footer-center {
  flex: 1;
  min-width: 0;
  border-top: 2px solid #f4d2df;
}

.exam-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-left: 1px solid #ffffff;
  border-radius: 0;
  background: var(--brand-dark);
  color: #ffffff;
  min-height: 36px;
  padding: 4px 8px;
  font-size: 20px;
  text-decoration: underline;
}

.exam-button:first-child {
  border-left: 0;
}

.exam-button:hover,
.exam-button:focus-visible {
  background: var(--brand-darker);
}

.question-stage {
  max-width: 1200px;
}

.question-image-wrap {
  margin: 0 0 22px;
  overflow: auto;
}

.question-image {
  display: block;
  max-width: 100%;
  height: auto;
}

.answer-options {
  display: grid;
  gap: 13px;
  width: fit-content;
  min-width: 120px;
  margin: 0 0 24px 28px;
}

.answer-option {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 28px;
}

.answer-option input {
  width: 14px;
  height: 14px;
  margin: 0;
}

.answer-marker {
  min-width: 20px;
  font-size: 18px;
}

.answer-snippet {
  display: block;
  max-width: min(360px, calc(100vw - 120px));
  max-height: 86px;
  object-fit: contain;
}

.answer-option.is-correct .answer-marker {
  color: var(--success);
  font-weight: 700;
}

.answer-option.is-incorrect .answer-marker {
  color: var(--danger);
  font-weight: 700;
}

.answer-feedback {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  min-height: 24px;
  border-radius: 50%;
  color: #ffffff;
  font-weight: 700;
}

.answer-option.is-correct .answer-feedback {
  background: var(--success);
}

.answer-option.is-incorrect .answer-feedback {
  background: var(--danger);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 20, 34, 0.15);
  padding: 20px;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-panel {
  width: min(940px, calc(100vw - 40px));
  max-height: calc(100vh - 80px);
  overflow: auto;
  border: 1px solid var(--brand-dark);
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.modal-panel.navigator-panel {
  background: var(--brand-dark);
  color: #ffffff;
}

.modal-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--brand-dark);
  color: #ffffff;
  min-height: 40px;
  padding: 8px 10px;
}

.modal-heading h2 {
  margin: 0;
  font-size: 18px;
}

.modal-body {
  padding: 16px;
  color: #111111;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 16px 16px;
}

.preview-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  border-top: 1px solid #e2e6eb;
}

.markdown-modal {
  width: min(1040px, calc(100vw - 40px));
}

.markdown-editor {
  display: grid;
  gap: 10px;
}

.markdown-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border: 1px solid #d6dce4;
  border-radius: 6px;
  background: #f8fbfe;
  padding: 6px;
}

.editor-tool-button {
  display: inline-grid;
  place-items: center;
  min-width: 34px;
  min-height: 32px;
  border: 1px solid #aeb8c5;
  border-radius: 5px;
  background: #ffffff;
  color: #17324c;
  font-weight: 700;
}

.editor-tool-button:hover,
.editor-tool-button:focus-visible {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
  outline: none;
}

.markdown-editor-source {
  min-height: 180px;
  font-family: Consolas, "Courier New", monospace;
}

.markdown-preview {
  min-height: 160px;
  border: 1px solid #d6dce4;
  border-radius: 6px;
  background: #ffffff;
  padding: 12px;
}

.markdown-content {
  line-height: 1.5;
}

.markdown-content h3,
.markdown-content h4,
.markdown-content h5 {
  margin: 0.8em 0 0.35em;
  color: #172c43;
}

.markdown-content p {
  margin: 0 0 0.8em;
}

.markdown-content ul,
.markdown-content ol {
  margin: 0 0 0.8em 1.4em;
  padding: 0;
}

.markdown-content blockquote {
  margin: 0 0 0.8em;
  border-left: 4px solid #c6d3e0;
  padding-left: 12px;
  color: #40536b;
}

.markdown-content code {
  border-radius: 4px;
  background: #eef3f7;
  padding: 1px 4px;
}

.markdown-image {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 8px 0;
}

.markdown-preview .markdown-image {
  cursor: pointer;
}

.math-block {
  margin: 12px 0;
  overflow-x: auto;
}

.math-fallback {
  white-space: pre-wrap;
}

.compact-drop {
  min-height: 104px;
}

.markdown-image-panel {
  width: min(860px, calc(100vw - 40px));
}

.markdown-image-editor {
  margin-top: 16px;
}

.markdown-image-stage {
  display: inline-block;
  position: relative;
  max-width: 100%;
  border: 1px solid #d6dce4;
  border-radius: 6px;
  background: #ffffff;
  line-height: 0;
}

.markdown-image-stage img {
  display: block;
  max-width: min(100%, 760px);
  max-height: 460px;
  object-fit: contain;
}

.equation-input {
  min-height: 110px;
  font-family: Consolas, "Courier New", monospace;
}

.equation-preview {
  min-height: 58px;
  border: 1px solid #d6dce4;
  border-radius: 6px;
  background: #ffffff;
  margin-top: 12px;
  padding: 10px;
}

.navigator-body {
  padding: 0 8px 14px;
}

.navigator-table-wrap {
  max-height: 352px;
  overflow: auto;
  border: 1px solid #ffffff;
  background: #ffffff;
}

.navigator-table {
  width: 100%;
  border-collapse: collapse;
  color: #111111;
}

.navigator-table th {
  position: sticky;
  top: 0;
  background: var(--brand-mid);
  color: #ffffff;
  font-size: 20px;
}

.navigator-table th,
.navigator-table td {
  border: 1px solid #bfc3c8;
  padding: 4px;
}

.navigator-table tr {
  background: #f4f4f4;
}

.navigator-table tr.is-current {
  background: var(--warning);
}

.navigator-table button {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  text-align: left;
  text-decoration: none;
}

.navigator-status {
  color: #e00000;
}

.navigator-summary {
  margin: 10px 0 0;
  color: #ffffff;
}

.teacher-grid {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.side-panel,
.work-panel {
  padding: 20px;
}

.mode-tabs {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.mode-tab {
  border: 1px solid #b8c4d0;
  border-radius: 6px;
  background: #ffffff;
  color: #172c43;
  min-height: 42px;
  padding: 8px 10px;
  text-align: left;
}

.mode-tab.is-active {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
  color: #0b5075;
  font-weight: 700;
}

.drop-area {
  display: grid;
  place-items: center;
  min-height: 180px;
  border: 2px dashed #8ea4ba;
  border-radius: 8px;
  background: #f8fbfe;
  color: #314960;
  padding: 20px;
  text-align: center;
}

.icon-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid #aeb8c5;
  border-radius: 6px;
  background: #ffffff;
  color: #17324c;
}

.icon-button:hover,
.icon-button:focus-visible {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
  outline: none;
}

.icon-button svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.drop-area:focus,
.drop-area.is-dragging {
  border-color: var(--brand-dark);
  outline: 3px solid rgba(0, 118, 168, 0.18);
}

.upload-input {
  display: none;
}

.image-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.image-list-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  border: 1px solid #d8dee6;
  border-radius: 6px;
  padding: 6px;
  background: #ffffff;
  color: #111111;
  text-align: left;
}

.image-list-item.is-active {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
}

.image-list-item img {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
  background: #f4f6f8;
}

.image-list-item span {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 18px;
  align-items: start;
}

.review-image-panel {
  min-height: 420px;
  border: 1px solid #d6dce4;
  border-radius: 8px;
  background: #ffffff;
  padding: 12px;
  overflow: auto;
}

.image-editor {
  display: inline-block;
  position: relative;
  line-height: 0;
  max-width: 100%;
}

.image-editor img {
  display: block;
  max-width: 100%;
  height: auto;
  user-select: none;
}

.image-edit-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  touch-action: none;
}

.edit-selection-box,
.crop-box {
  position: absolute;
  border: 2px solid var(--brand-dark);
  background: rgba(0, 118, 168, 0.08);
}

.crop-box {
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.28);
}

.edit-handle {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  background: var(--brand-dark);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
  touch-action: none;
}

.edit-handle.nw,
.edit-handle.se {
  cursor: nwse-resize;
}

.edit-handle.ne,
.edit-handle.sw {
  cursor: nesw-resize;
}

.edit-handle.n,
.edit-handle.s {
  cursor: ns-resize;
}

.edit-handle.e,
.edit-handle.w {
  cursor: ew-resize;
}

.edit-handle.nw {
  left: -7px;
  top: -7px;
}

.edit-handle.ne {
  right: -7px;
  top: -7px;
}

.edit-handle.sw {
  left: -7px;
  bottom: -7px;
}

.edit-handle.se {
  right: -7px;
  bottom: -7px;
}

.edit-handle.n {
  left: calc(50% - 7px);
  top: -7px;
}

.edit-handle.e {
  right: -7px;
  top: calc(50% - 7px);
}

.edit-handle.s {
  left: calc(50% - 7px);
  bottom: -7px;
}

.edit-handle.w {
  left: -7px;
  top: calc(50% - 7px);
}

.editor-hint {
  min-height: 22px;
  margin: 10px 0 0;
  color: #29435f;
  line-height: 1.35;
}

.wizard-bar {
  display: block;
  margin: 0 0 10px;
  border: 1px solid #9db5cc;
  border-radius: 6px;
  background: #eaf3fb;
  color: #17324c;
  padding: 8px 10px;
  font-weight: 700;
}

.wizard-bar[hidden] {
  display: none;
}

.edit-tool-row {
  margin-bottom: 14px;
}

.correct-answer-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.correct-letter-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 38px;
  min-height: 34px;
  border: 1px solid #aeb8c5;
  border-radius: 6px;
  background: #ffffff;
  color: #17324c;
  font-weight: 700;
}

.correct-letter-button:hover,
.correct-letter-button:focus-visible,
.correct-letter-button.is-correct {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
  outline: none;
}

.correct-tick {
  color: var(--success);
}

.option-snippet-list {
  display: grid;
  gap: 8px;
}

.option-snippet-row {
  display: grid;
  grid-template-columns: 26px 34px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 7px;
  border: 1px solid #d8dee6;
  border-radius: 6px;
  background: #ffffff;
  padding: 5px;
}

.option-snippet-row.is-selecting {
  border-color: var(--brand-dark);
  background: var(--brand-soft);
}

.snippet-select-button,
.snippet-clear-button {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid #aeb8c5;
  border-radius: 5px;
  background: #ffffff;
  color: #17324c;
}

.snippet-select-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-dasharray: 3 2;
}

.snippet-preview {
  display: flex;
  align-items: center;
  min-height: 30px;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
}

.snippet-preview img {
  display: block;
  max-width: 100%;
  max-height: 46px;
  object-fit: contain;
}

.wizard-rect {
  position: absolute;
  border: 2px dashed var(--brand-dark);
  background: rgba(255, 255, 255, 0.1);
}

.wizard-rect span {
  position: absolute;
  left: -2px;
  top: -22px;
  min-width: 22px;
  border-radius: 4px 4px 0 0;
  background: var(--brand-dark);
  color: #ffffff;
  padding: 2px 6px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}

.edit-confirm-panel {
  width: min(460px, calc(100vw - 40px));
}

.review-controls {
  border: 1px solid #d6dce4;
  border-radius: 8px;
  background: #f9fbfd;
  padding: 16px;
}

.step-indicator {
  margin: 0 0 14px;
  color: var(--muted);
  font-weight: 700;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 14px;
  flex-wrap: wrap;
}

.table-wrap {
  width: 100%;
  overflow: auto;
  border: 1px solid #c6d0dc;
  border-radius: 8px;
  background: #ffffff;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.results-table th,
.results-table td {
  border-bottom: 1px solid #e0e5eb;
  border-right: 1px solid #e0e5eb;
  padding: 8px 10px;
  text-align: left;
  white-space: nowrap;
}

.results-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #eef4fa;
  color: #172c43;
}

.results-table td.question-cell,
.results-table th.question-heading {
  text-align: center;
}

.sort-heading {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  font-weight: 700;
}

.question-link {
  border: 0;
  background: transparent;
  color: #005f8e;
  padding: 0;
  text-decoration: underline;
}

.mark-correct {
  color: var(--success);
  font-weight: 700;
}

.mark-incorrect {
  color: var(--danger);
  font-weight: 700;
}

.mark-empty {
  color: #7a828c;
}

.names-hidden .student-username,
.names-hidden .student-first,
.names-hidden .student-surname {
  color: transparent;
  text-shadow: 0 0 8px rgba(17, 17, 17, 0.4);
}

.auth-panel {
  width: min(620px, calc(100vw - 40px));
}

.private-key-input {
  min-height: 240px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.completion-panel {
  max-width: 620px;
  margin: 80px auto 0;
  padding: 24px;
}

hr {
  border: 0;
  border-top: 1px solid #dce2e8;
  margin: 22px 0;
}

body.high-contrast {
  --brand-dark: #004b73;
  --brand-darker: #00364f;
  --brand-mid: #1a5c92;
  --brand-soft: #edf7ff;
}

@media (max-width: 860px) {
  .home-grid,
  .teacher-grid,
  .review-layout {
    grid-template-columns: 1fr;
  }

  .page-heading {
    display: block;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .file-action-field {
    grid-template-columns: 1fr;
  }

  .uat-mark {
    grid-template-columns: repeat(3, 54px) 98px;
    gap: 6px;
  }

  .uat-pill {
    height: 118px;
    border-radius: 28px;
    font-size: 45px;
  }

  .uat-text {
    font-size: 17px;
  }

  .uat-text strong {
    font-size: 46px;
  }

  .exam-titlebar {
    font-size: 18px;
  }

  .color-scheme {
    width: 140px;
  }

  .tool-button {
    font-size: 14px;
  }
}

@media (max-width: 560px) {
  .site-nav-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding: 8px 0;
  }

  .page-shell {
    width: min(100vw - 20px, 1180px);
    padding-top: 22px;
  }

  .selection-panel,
  .summary-panel,
  .side-panel,
  .work-panel {
    padding: 16px;
  }

  .test-select {
    min-height: 56px;
    font-size: 18px;
  }

  .exam-toolsbar {
    align-items: stretch;
  }

  .exam-tools-left {
    display: none;
  }

  .exam-button {
    font-size: 17px;
  }

  .answer-options {
    margin-left: 6px;
  }
}