:root {
  --bg: #f4efe4;
  --bg-layer: #efe4cf;
  --ink: #1f2833;
  --muted: #5b6776;
  --card: rgba(255, 251, 244, 0.82);
  --line: rgba(31, 40, 51, 0.1);
  --accent: #d95d39;
  --accent-deep: #8f2d16;
  --success: #217a4d;
  --error: #b72c3f;
  --shadow: 0 22px 60px rgba(73, 46, 21, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(217, 93, 57, 0.18), transparent 24%),
    radial-gradient(circle at bottom right, rgba(143, 45, 22, 0.14), transparent 26%),
    linear-gradient(180deg, var(--bg), var(--bg-layer));
}

html.teacher-theme-coin-flip {
  --bg: #eef5ef;
  --bg-layer: #dce8df;
  --card: rgba(249, 255, 251, 0.84);
  --accent: #4f9c76;
  --accent-deep: #245d43;
  --success: #2f7d5d;
  --shadow: 0 22px 60px rgba(36, 93, 67, 0.14);
  background:
    radial-gradient(circle at top left, rgba(79, 156, 118, 0.18), transparent 24%),
    radial-gradient(circle at bottom right, rgba(36, 93, 67, 0.14), transparent 26%),
    linear-gradient(180deg, var(--bg), var(--bg-layer));
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Avenir Next", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button,
a.primary-button,
a.secondary-button {
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.shell {
  width: min(100%, 1120px);
  margin: 0 auto;
  min-height: 100vh;
  padding: max(24px, env(safe-area-inset-top)) 20px max(32px, env(safe-area-inset-bottom));
  display: grid;
  gap: 18px;
  align-content: start;
}

.hero,
.panel {
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: var(--card);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero {
  padding: 28px;
  border-radius: var(--radius-xl);
}

.hero-kicker,
.panel-tag {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.hero h1,
.panel h2 {
  margin: 0;
  line-height: 1.04;
}

.hero h1 {
  font-size: clamp(2rem, 8vw, 4.3rem);
  max-width: 12ch;
}

.hero-copy,
.panel-copy,
.feedback,
.question-copy,
.text-link {
  color: var(--muted);
}

.hero-copy {
  margin: 16px 0 0;
  max-width: 52ch;
  line-height: 1.7;
}

.panel {
  border-radius: var(--radius-xl);
  padding: 24px;
}

.panel-header {
  margin-bottom: 20px;
}

.panel-header-with-action {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.panel-copy {
  margin: 12px 0 0;
  line-height: 1.65;
}

.panel h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.2;
}

.stack {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 10px;
}

.field span {
  font-size: 0.94rem;
  font-weight: 700;
}

.field input,
.primary-button {
  min-height: 56px;
  border-radius: 18px;
}

.field input {
  width: 100%;
  border: 1.5px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  padding: 0 16px;
  outline: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus {
  border-color: rgba(217, 93, 57, 0.65);
  box-shadow: 0 0 0 4px rgba(217, 93, 57, 0.12);
  transform: translateY(-1px);
}

.otp-group {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.otp-digit {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 1.5px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  text-align: center;
  font-size: clamp(1.5rem, 6vw, 2.15rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  aspect-ratio: 1 / 1.08;
  outline: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.otp-digit:focus {
  border-color: rgba(217, 93, 57, 0.72);
  box-shadow: 0 0 0 4px rgba(217, 93, 57, 0.12);
  transform: translateY(-1px);
}

.primary-button {
  border: none;
  padding: 0 18px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff8f1;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 16px 32px rgba(143, 45, 22, 0.22);
}

.primary-button:hover,
.primary-button:focus-visible,
a.primary-button:hover,
a.primary-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 36px rgba(143, 45, 22, 0.28);
}

a.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

a.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.secondary-button {
  min-height: 48px;
  border: 1px solid rgba(143, 45, 22, 0.18);
  border-radius: 16px;
  padding: 0 16px;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-deep);
  background: rgba(255, 255, 255, 0.7);
}

.secondary-button:hover,
.secondary-button:focus-visible,
a.secondary-button:hover,
a.secondary-button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(143, 45, 22, 0.3);
  background: rgba(255, 248, 241, 0.96);
  box-shadow: 0 10px 24px rgba(73, 46, 21, 0.1);
}

.danger-button {
  color: #a12736;
  border-color: rgba(167, 39, 54, 0.2);
  background: rgba(255, 244, 245, 0.88);
}

.danger-button:hover,
.danger-button:focus-visible {
  border-color: rgba(167, 39, 54, 0.34);
  background: rgba(255, 238, 241, 0.96);
  box-shadow: 0 10px 24px rgba(167, 39, 54, 0.1);
}

.question-body {
  display: grid;
  gap: 14px;
  margin-bottom: 18px;
}

.question-card {
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  padding: 18px;
}

.question-copy {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  white-space: pre-wrap;
}

.question-image {
  width: 100%;
  display: block;
  border-radius: 18px;
  object-fit: cover;
  background: #fff;
}

.feedback {
  min-height: 24px;
  margin: 2px 0 0;
  font-size: 0.95rem;
  line-height: 1.4;
}

.feedback.success {
  color: var(--success);
}

.feedback.error {
  color: var(--error);
}

.panel-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}

.puzzle-group-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
}

.puzzle-group-chip {
  margin: 0;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(31, 40, 51, 0.1);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.text-link {
  font-weight: 700;
  text-decoration: none;
}

.teacher-entry-card {
  margin-top: 22px;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 248, 239, 0.92), rgba(255, 236, 219, 0.82));
  border: 1px solid rgba(143, 45, 22, 0.12);
  display: grid;
  gap: 12px;
}

.teacher-entry-button {
  width: 100%;
}

.teacher-shell {
  width: min(100%, 1400px);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(24px, env(safe-area-inset-top)) 20px max(32px, env(safe-area-inset-bottom));
  display: grid;
  gap: 18px;
}

.teacher-portal-shell {
  display: grid;
  gap: 18px;
}

.teacher-panel {
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: var(--card);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  border-radius: var(--radius-xl);
}

.teacher-workspace {
  display: grid;
  gap: 18px;
}

.teacher-page {
  display: grid;
  gap: 18px;
}

.teacher-nav-top {
  display: grid;
  gap: 10px;
}

.teacher-nav-top h2 {
  font-size: 1.7rem;
}

.teacher-nav-links {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.teacher-nav-links button {
  min-height: 48px;
  border: 1px solid rgba(31, 40, 51, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-weight: 800;
  text-align: left;
  padding: 0 14px;
}

.teacher-nav-links button:hover,
.teacher-nav-links button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(143, 45, 22, 0.18);
}

.teacher-nav-links button.is-active {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff8f1;
}

.teacher-nav-footer {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}

.teacher-current-project {
  margin-top: 20px;
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(31, 40, 51, 0.08);
}

.teacher-main {
  display: grid;
  gap: 18px;
}

.teacher-grid {
  display: grid;
  gap: 18px;
}

.teacher-project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.teacher-game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.teacher-game-card {
  display: grid;
  gap: 12px;
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(31, 40, 51, 0.08);
  background:
    radial-gradient(circle at top right, rgba(217, 93, 57, 0.12), transparent 32%),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 34px rgba(73, 46, 21, 0.08);
}

.teacher-game-card .primary-button {
  width: 100%;
}

.teacher-qr-image {
  width: min(220px, 100%);
  display: block;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}

.teacher-project-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid rgba(31, 40, 51, 0.08);
  background: rgba(255, 255, 255, 0.78);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.teacher-project-card:hover {
  transform: translateY(-2px);
  border-color: rgba(143, 45, 22, 0.16);
  box-shadow: 0 16px 34px rgba(73, 46, 21, 0.1);
}

.teacher-project-card.is-selected {
  border-color: rgba(217, 93, 57, 0.28);
  box-shadow: 0 18px 40px rgba(143, 45, 22, 0.08);
}

.teacher-project-card-head {
  display: flex;
  gap: 10px;
  justify-content: space-between;
  align-items: flex-start;
}

.teacher-project-card-head > div {
  display: grid;
  gap: 6px;
}

.teacher-project-card-head span {
  color: var(--muted);
}

.teacher-project-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.teacher-project-stats article {
  display: grid;
  gap: 4px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(245, 239, 228, 0.78);
}

.teacher-project-stats strong {
  font-size: 1.15rem;
}

.teacher-project-stats span,
.teacher-project-meta small {
  color: var(--muted);
}

.teacher-grid-hero,
.teacher-grid-bottom {
  grid-template-columns: 1fr;
}

.teacher-panel {
  padding: 24px;
}

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

.teacher-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.teacher-auth-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.teacher-auth-tabs button {
  min-height: 46px;
  border: 1px solid rgba(31, 40, 51, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
  font-weight: 800;
}

.teacher-auth-tabs button.is-active {
  color: #fff8f1;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.teacher-list {
  display: grid;
  gap: 10px;
}

.teacher-list-item {
  width: 100%;
  border: 1px solid rgba(31, 40, 51, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  padding: 10px 12px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  text-align: left;
}

.teacher-list-item.active {
  border-color: rgba(217, 93, 57, 0.45);
  box-shadow: 0 0 0 3px rgba(217, 93, 57, 0.1);
}

.teacher-list-item div {
  display: grid;
  gap: 4px;
}

.teacher-list-item span,
.teacher-list-item small {
  color: var(--muted);
}

.teacher-list-item-main {
  width: 100%;
  border: none;
  background: transparent;
  padding: 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  text-align: left;
}

.teacher-search {
  margin-top: 8px;
}

.teacher-selection-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  margin-bottom: 14px;
}

.teacher-data-table {
  display: grid;
  gap: 10px;
}

.teacher-data-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

.teacher-data-row div {
  display: grid;
  gap: 4px;
}

.teacher-data-row-vertical {
  grid-template-columns: 1fr;
  align-items: start;
}

.teacher-interval-bar-wrap {
  display: grid;
  gap: 8px;
}

.teacher-data-row span,
.teacher-data-row small {
  color: var(--muted);
}

.teacher-selection-meta {
  color: var(--muted);
  font-weight: 700;
}

.teacher-answer-list {
  display: grid;
  gap: 12px;
}

.teacher-answer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 10px;
  align-items: end;
}

.teacher-answer-field {
  margin: 0;
}

.teacher-inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.teacher-list-item.is-dragging {
  opacity: 0.6;
}

.teacher-group-progress {
  display: grid;
  gap: 8px;
  min-width: 180px;
}

.teacher-group-stats {
  display: grid;
  gap: 6px;
  min-width: 180px;
}

.teacher-group-stats small {
  color: var(--muted);
}

.teacher-progress-bar {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: rgba(31, 40, 51, 0.08);
  overflow: hidden;
}

.teacher-progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.teacher-textarea {
  width: 100%;
  min-height: 140px;
  border: 1.5px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  padding: 14px 16px;
  resize: vertical;
  outline: none;
}

.teacher-textarea-large {
  min-height: 260px;
}

.teacher-dropzone {
  border: 1.5px dashed rgba(143, 45, 22, 0.28);
  border-radius: 20px;
  padding: 18px;
  background: rgba(255, 250, 243, 0.76);
  display: grid;
  gap: 8px;
}

.teacher-code-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(217, 93, 57, 0.12);
  color: var(--accent-deep);
  font-weight: 800;
  margin-bottom: 16px;
}

.teacher-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(31, 40, 51, 0.52);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 30;
}

.teacher-modal {
  width: min(100%, 760px);
  max-height: min(90vh, 920px);
  overflow: auto;
}

.teacher-dropzone.is-dragging {
  border-color: rgba(217, 93, 57, 0.72);
  background: rgba(255, 238, 224, 0.9);
  box-shadow: 0 0 0 4px rgba(217, 93, 57, 0.1);
}

.teacher-dropzone strong {
  font-size: 1rem;
}

.teacher-dropzone span {
  color: var(--muted);
}

.teacher-toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 10px 14px;
  border-radius: 18px;
  border: 1px solid rgba(31, 40, 51, 0.08);
  background: rgba(255, 255, 255, 0.74);
  color: var(--ink);
  font-weight: 700;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.teacher-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(143, 45, 22, 0.18);
  box-shadow: 0 10px 24px rgba(73, 46, 21, 0.08);
}

.teacher-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.teacher-toggle-track {
  position: relative;
  width: 48px;
  height: 28px;
  border-radius: 999px;
  background: rgba(91, 103, 118, 0.24);
  flex: 0 0 auto;
  transition: background 0.18s ease;
}

.teacher-toggle-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 3px 8px rgba(31, 40, 51, 0.16);
  transition: transform 0.18s ease;
}

.teacher-toggle input:checked + .teacher-toggle-track {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.teacher-toggle input:checked + .teacher-toggle-track::after {
  transform: translateX(20px);
}

.teacher-toggle input:focus-visible + .teacher-toggle-track {
  box-shadow: 0 0 0 4px rgba(217, 93, 57, 0.14);
}

.teacher-toggle-copy {
  line-height: 1.45;
}

.teacher-toggle-inline {
  min-height: 42px;
  padding: 8px 12px;
}

.teacher-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.teacher-stat-card {
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.teacher-stat-card strong {
  font-size: 1.7rem;
}

.teacher-stat-card span {
  color: var(--muted);
}

.teacher-stat-card small {
  color: var(--muted);
  line-height: 1.5;
}

.teacher-insight {
  width: 100%;
  min-height: 0;
  box-sizing: border-box;
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(145deg, rgba(255,255,255,0.84), rgba(255,244,231,0.8));
  border: 1px solid rgba(143, 45, 22, 0.12);
  display: grid;
  gap: 10px;
  align-content: start;
  overflow: hidden;
}

.teacher-insight strong {
  display: block;
  max-width: 100%;
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.teacher-insight .question-copy {
  max-width: 32ch;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.teacher-chart {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.teacher-chart h3 {
  margin: 0;
}

.teacher-chart-row {
  display: grid;
  grid-template-columns: minmax(80px, 110px) 1fr 48px;
  gap: 12px;
  align-items: center;
}

.teacher-chart-row strong {
  text-align: right;
}

.teacher-label-scroll {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  scrollbar-width: thin;
}

.metric-bar {
  height: 12px;
  border-radius: 999px;
  background: rgba(31, 40, 51, 0.08);
  overflow: hidden;
}

.metric-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.modal {
  position: fixed;
  inset: 0;
  padding: 24px;
  display: grid;
  place-items: center;
  background: rgba(31, 40, 51, 0.5);
}

.modal.hidden,
.hidden {
  display: none;
}

.modal-card {
  width: min(100%, 420px);
  border-radius: 28px;
  background: #fffaf3;
  padding: 26px;
  box-shadow: var(--shadow);
}

.clue-content {
  margin: 0 0 22px;
  color: var(--ink);
  line-height: 1.75;
  white-space: pre-wrap;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (min-width: 900px) {
  .shell {
    grid-template-columns: 1.1fr 0.9fr;
    grid-template-areas:
      "hero home"
      "puzzle puzzle";
    align-content: center;
  }

  .hero {
    grid-area: hero;
    min-height: 100%;
  }

  .panel-home {
    grid-area: home;
  }

  .panel-puzzle {
    grid-area: puzzle;
  }

  .teacher-shell {
    align-content: start;
  }

  .teacher-portal-shell {
    grid-template-columns: 300px 1fr;
    align-items: start;
  }

  .teacher-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .teacher-grid-hero {
    grid-template-columns: 1.3fr 0.7fr;
  }

  .teacher-grid-bottom {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .teacher-panel-wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .teacher-nav-top h2 {
    font-size: 1.45rem;
  }

  .shell {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero,
  .panel,
  .modal-card {
    border-radius: 24px;
  }

  .panel-actions {
    flex-direction: column;
  }

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

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