:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e7eef7;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-hover: #5ba3ff;
  --success: #34c759;
  --danger: #ff6b6b;
  --warn: #ffd60a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

.site-header {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: calc(0.75rem + env(safe-area-inset-top, 0));
  padding-right: max(1rem, env(safe-area-inset-right, 0));
  padding-bottom: 0.75rem;
  padding-left: max(1rem, env(safe-area-inset-left, 0));
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.site-nav-toggle {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: -1px;
  clip: rect(0, 0, 0, 0);
  overflow: hidden;
}

.site-nav-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  margin-left: auto;
}

.site-header-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  flex: 1 1 auto;
  min-width: 0;
}

.site-header-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-header .brand {
  font-weight: 700;
  color: var(--text);
  min-width: max-content;
}

.header-premium-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 214, 10, 0.5);
  background: rgba(255, 214, 10, 0.16);
  color: #ffe78a;
  font-size: 0.74rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-header-user {
  font-weight: 600;
  font-size: 0.85rem;
}

.site-header-user-desktop {
  display: none;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.site-header-menu-panel {
  display: none;
  position: absolute;
  right: max(1rem, env(safe-area-inset-right, 0));
  top: calc(100% - 0.1rem);
  z-index: 30;
  width: min(320px, calc(100vw - 2rem));
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(26, 35, 50, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.site-nav-toggle:checked ~ .site-header-menu-panel {
  display: grid;
  gap: 0.6rem;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: max(1rem, env(safe-area-inset-top, 0));
  padding-right: max(1rem, env(safe-area-inset-right, 0));
  padding-bottom: max(1.5rem, env(safe-area-inset-bottom, 0));
  padding-left: max(1rem, env(safe-area-inset-left, 0));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

/* Course / template edit: title row + primary actions (Activate, Publish, …) */
.admin-edit-page-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.admin-edit-page-heading-main {
  min-width: 0;
  flex: 1 1 12rem;
}

.admin-edit-page-heading-main h1 {
  margin: 0 0 0.35rem 0;
  font-size: 1.5rem;
  line-height: 1.25;
  word-break: break-word;
}

.admin-edit-page-heading-main h1 .muted {
  margin-left: 0.35rem;
  font-weight: 400;
  font-size: 0.92em;
}

.admin-edit-page-heading-main > p.muted {
  margin: 0;
  font-size: 0.9rem;
}

.admin-edit-page-heading-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.admin-edit-page-heading-actions form {
  display: inline;
  margin: 0;
}

.editor-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.editor-tab {
  padding: 0.45rem 0.95rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
}

.editor-tab:hover {
  border-color: var(--accent);
  color: var(--text);
}

.editor-tab.editor-tab-active,
.editor-tab[aria-selected="true"] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.editor-panel[hidden] {
  display: none !important;
}

.wide {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

section.card.template-editor-meta {
  display: flex;
  flex-direction: column;
}

.template-editor-meta .template-editor-meta-break {
  flex: 0 0 auto;
  width: 100%;
  height: 0.75rem;
}

.template-editor-meta .template-editor-field,
.template-editor-question .template-editor-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.template-editor-meta .template-editor-field:last-child,
.template-editor-question .template-editor-field:last-child {
  margin-bottom: 0;
}

.template-editor-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.template-editor-questions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.template-editor-question-head {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.35rem;
}

.template-editor-opt-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.template-editor-opt-row:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.template-editor-opt-num {
  font-size: 0.8rem;
  font-weight: 600;
}

.template-editor-mark {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.template-editor-mark input {
  width: auto;
  min-width: 1.1rem;
  min-height: 1.1rem;
  flex-shrink: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.btn {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
}

/* Explicit colors so global `a:hover` cannot paint label text the same as the fill */
.btn:hover,
.btn:focus-visible {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(61, 139, 253, 0.12);
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--border);
  color: var(--muted);
}

.badge-done {
  background: rgba(52, 199, 89, 0.2);
  color: var(--success);
}

@media (max-width: 720px) {
  .question-heading-sticky {
    position: sticky;
    top: 0;
    z-index: 2;
    margin: -1.25rem -1.5rem 0.75rem;
    padding: 0.85rem 1.5rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
  }

  .option-list li {
    padding: 0.75rem 0.85rem;
  }

  .option-list li label {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    width: 100%;
    cursor: pointer;
  }

  .option-list li input {
    margin-top: 0.2rem;
    flex-shrink: 0;
  }

  .site-header-nav {
    display: none;
    position: absolute;
    left: max(1rem, env(safe-area-inset-left, 0));
    right: max(1rem, env(safe-area-inset-right, 0));
    top: calc(100% - 0.1rem);
    z-index: 20;
    padding: 0.75rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(26, 35, 50, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .site-header-menu-panel {
    top: calc(100% + 13.5rem);
  }

  .site-header-user {
    display: none;
  }

  .site-nav-toggle:checked ~ .site-header-nav {
    display: flex;
  }

  .site-nav-toggle:checked ~ .site-nav-menu-btn {
    border-color: var(--accent);
    color: var(--accent-hover);
  }

  .site-nav-toggle:focus-visible ~ .site-nav-menu-btn {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .btn-lang {
    min-width: 44px;
    min-height: 44px;
    padding: 0 0.5rem;
    font-size: 0.85rem;
  }

  .btn,
  .btn-secondary {
    min-height: 44px;
    padding: 0.5rem 1rem;
  }
}

@media (min-width: 721px) {
  .site-header-nav {
    display: flex !important;
  }

  .site-header-user-desktop {
    display: inline-flex;
  }
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -0.25rem;
  padding: 0 0.25rem;
}

.table-scroll table {
  min-width: 520px;
}

.question-dock {
  position: fixed;
  left: max(0.6rem, env(safe-area-inset-left, 0));
  right: max(0.6rem, env(safe-area-inset-right, 0));
  bottom: max(0.55rem, env(safe-area-inset-bottom, 0));
  z-index: 15;
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding: 0.55rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(26, 35, 50, 0.72);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

.progress-dock {
  position: fixed;
  left: max(0.6rem, env(safe-area-inset-left, 0));
  right: max(0.6rem, env(safe-area-inset-right, 0));
  bottom: max(0.55rem, env(safe-area-inset-bottom, 0));
  z-index: 15;
  display: grid;
  gap: 0.4rem;
  overflow: hidden;
  padding: 0.55rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(26, 35, 50, 0.72);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

.progress-line {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
}

.progress-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  padding: 0 0.55rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  background: rgba(141, 156, 179, 0.2);
  font-weight: 600;
}

.progress-chip-course {
  gap: 0.35rem;
}

.progress-chip-icon {
  font-size: 0.9rem;
  line-height: 1;
}

.progress-chip-label {
  font-size: 0.85rem;
}

.progress-chip-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.progress-chip-completed,
.progress-chip-correct {
  background: rgba(52, 199, 89, 0.25);
}

.progress-chip-locked {
  background: rgba(141, 156, 179, 0.22);
}

.progress-chip-wrong {
  background: rgba(255, 107, 107, 0.25);
}

.question-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  padding: 0 0.55rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  background: rgba(141, 156, 179, 0.2);
  font-weight: 600;
}

.question-chip-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.question-chip-locked {
  background: rgba(141, 156, 179, 0.22);
}

.question-chip-correct {
  background: rgba(52, 199, 89, 0.25);
}

.question-chip-wrong {
  background: rgba(255, 107, 107, 0.25);
}

.test-main {
  padding-bottom: max(4.9rem, env(safe-area-inset-bottom, 0));
}

.course-main {
  padding-bottom: max(7rem, env(safe-area-inset-bottom, 0));
}

.test-main:has([data-testid="embedded-progress-dock"]) {
  padding-bottom: max(8.75rem, env(safe-area-inset-bottom, 0));
}

.progress-dock-double {
  padding-bottom: max(0.55rem, env(safe-area-inset-bottom, 0));
}

.review-title {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.review-score-inline {
  font-weight: 700;
}

.review-score-pass {
  color: var(--success);
}

.review-score-fail {
  color: var(--danger);
}

.templates-table {
  table-layout: fixed;
}

.table-scroll .templates-table {
  min-width: 0;
}

.templates-table .templates-col-name {
  width: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.templates-table .templates-col-count {
  width: 2.4rem;
  text-align: right;
  white-space: nowrap;
}

.templates-table .templates-col-actions {
  width: 7.4rem;
  text-align: right;
  white-space: nowrap;
}

.template-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: 100%;
  justify-content: flex-end;
  flex-wrap: nowrap;
}

.btn-start-primary {
  min-width: 2.2rem;
  padding: 0.35rem 0.48rem;
  font-size: 1rem;
  line-height: 1;
}

.btn-start-secondary {
  min-width: 2.2rem;
  padding: 0.35rem 0.48rem;
}

@media (max-width: 720px) {
  .templates-table td {
    padding: 0.55rem 0.42rem;
  }

  .templates-table .templates-col-count {
    width: 2rem;
  }

  .templates-table .templates-col-actions {
    width: 6.2rem;
    padding-right: 0.32rem;
  }

  .template-actions {
    gap: 0.28rem;
  }

  .btn-start-primary,
  .btn-start-secondary {
    min-width: 2rem;
    min-height: 2rem;
    padding: 0.3rem 0.42rem;
    font-size: 0.94rem;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.option-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;
}

.option-list li {
  margin: 0.4rem 0;
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.option-correct {
  border-color: var(--success) !important;
  background: rgba(52, 199, 89, 0.12);
}

.option-user-correct {
  box-shadow: inset 0 0 0 2px var(--success);
}

.option-user-wrong {
  border-color: var(--danger) !important;
  background: rgba(255, 107, 107, 0.1);
}

.score-banner {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  width: 100%;
  max-width: 360px;
}

.login-card h1 {
  margin-top: 0;
  font-size: 1.35rem;
}

.login-card input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  margin: 0.35rem 0 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
}

.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.error-card {
  width: 100%;
  max-width: 560px;
}

.error-card h1 {
  margin-top: 0;
}

.error-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.lang-switch {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.lang-switch-form {
  display: inline;
  margin: 0;
}

.btn-lang {
  padding: 0.2rem 0.4rem;
  font-size: 0.72rem;
  background: var(--border);
  color: var(--text);
}

.hidden {
  display: none !important;
}

.course-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.course-filter-field {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.course-filter-label {
  font-size: 0.82rem;
  color: var(--muted);
}

.course-filter-select {
  min-width: 10rem;
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.course-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.course-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.course-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.course-card-title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.25;
}

.course-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.course-card-desc {
  flex: 1;
  margin: 0.5rem 0 0.3rem;
  font-size: 0.9rem;
}

.course-card-summary {
  margin: 0 0 0.85rem;
  font-size: 0.82rem;
}

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.82rem;
}

.active-course-progress {
  margin-left: 0.5rem;
}

.course-detail-body {
  margin-top: 0.5rem;
}

.course-detail-actions {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

@media (max-width: 720px) {
  .course-card-grid {
    grid-template-columns: 1fr;
  }

  .course-filters {
    align-items: flex-start;
  }

  .course-filter-field {
    width: 100%;
  }

  .course-detail-actions .btn {
    width: 100%;
    box-sizing: border-box;
  }
}

.course-card-progress {
  margin: 0.5rem 0 0.75rem;
}

.course-card-progress-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  display: block;
  margin-bottom: 0.25rem;
}

.course-card-progress-track {
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.course-card-progress-fill {
  height: 100%;
  border-radius: 999px;
  background: rgba(52, 199, 89, 0.85);
  max-width: 100%;
}

.course-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  align-items: center;
}

.course-ongoing-tests-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.course-ongoing-tests-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.course-ongoing-tests-list li:last-child {
  border-bottom: none;
}

.staff-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin: 0 0.35rem;
  vertical-align: middle;
}

.staff-badge-admin {
  color: #1a1405;
  background: linear-gradient(135deg, #ffd60a, #f4c025);
}

.staff-badge-teacher {
  color: #f0e8ff;
  background: linear-gradient(135deg, #7c5cbf, #5a3d99);
}

.article-preview-box {
  margin-top: 0.5rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.15);
  max-height: 280px;
  overflow: auto;
}

.article-preview-box h1,
.article-preview-box h2,
.article-preview-box h3 {
  margin-top: 0.5rem;
}

.article-preview-box img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.75rem auto;
  border-radius: 6px;
}

.course-article-live-preview.article-preview-box {
  max-height: min(70vh, 560px);
}

.course-article-preview-shell {
  position: relative;
}

.article-preview-loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border-radius: 6px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border: 1px solid var(--border);
  z-index: 2;
  font-size: 0.9rem;
  color: var(--muted);
}

.article-preview-loading-overlay[hidden] {
  display: none !important;
}

.article-preview-loading-spinner {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  border: 2px solid var(--border);
  border-top-color: var(--accent, #888);
  border-radius: 50%;
  animation: article-preview-spin 0.65s linear infinite;
}

@keyframes article-preview-spin {
  to {
    transform: rotate(360deg);
  }
}

.course-article-editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.course-article-panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.course-article-editor-root[data-view-mode="write"] .course-article-panes {
  grid-template-columns: 1fr;
}

.course-article-editor-root[data-view-mode="write"] .course-article-preview-col {
  display: none;
}

.course-article-editor-root[data-view-mode="preview"] .course-article-panes {
  grid-template-columns: 1fr;
}

.course-article-editor-root[data-view-mode="preview"] .course-article-write-col {
  display: none;
}

textarea.code-ish {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.45;
}

.course-markdown-help-dialog {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  max-width: min(42rem, 96vw);
  background: var(--surface);
  color: var(--text);
}

.course-markdown-sample {
  background: rgba(0, 0, 0, 0.25);
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.82rem;
}