.site-header {
  gap: var(--space-6);
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
}

.site-navigation {
  display: flex;
  gap: var(--space-1);
  align-items: center;
  margin-inline: auto;
}

.site-nav-link {
  min-height: var(--control-md);
  display: inline-flex;
  align-items: center;
  padding-inline: var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
}

.site-nav-link:hover,
.site-nav-link.is-active {
  background: var(--color-surface-subtle);
  color: var(--brand-evergreen-950);
}

.site-nav-link.is-active {
  box-shadow: inset 0 -3px var(--brand-learning-gold);
}

.desktop-account-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.mobile-menu-trigger,
.course-contents-trigger {
  display: none;
}

.menu-glyph {
  display: grid;
  gap: 4px;
}

.menu-glyph span {
  width: 18px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: currentColor;
}

.navigation-drawer-backdrop {
  position: fixed;
  z-index: var(--z-dialog);
  inset: 0;
  display: flex;
  justify-content: flex-end;
  background: var(--color-overlay);
}

.navigation-drawer {
  position: relative;
  width: min(28rem, 92vw);
  height: 100%;
  overflow-y: auto;
  padding: var(--space-10) var(--space-6);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
}

.navigation-drawer-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
}

.navigation-drawer h2 {
  margin: 0 3.5rem var(--space-8) 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
}

.drawer-navigation,
.learner-sidebar nav,
.learner-sidebar-account {
  display: grid;
  gap: var(--space-1);
}

.drawer-nav-link,
.learner-nav-link {
  min-height: var(--control-md);
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-weight: 700;
  text-decoration: none;
}

.drawer-nav-link:hover,
.drawer-nav-link.is-active,
.learner-nav-link:hover,
.learner-nav-link.is-active {
  background: var(--color-surface-subtle);
  color: var(--brand-evergreen-950);
}

.drawer-nav-link.is-active,
.learner-nav-link.is-active {
  box-shadow: inset 4px 0 var(--brand-learning-gold);
}

.drawer-primary-link {
  margin-top: var(--space-2);
  background: var(--brand-learning-gold);
}

.navigation-label {
  margin: 0 0 var(--space-2);
  color: var(--brand-harbor-teal);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.drawer-section-label {
  margin-top: var(--space-6);
}

.learner-layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: var(--space-8);
  width: min(calc(100% - (2 * var(--page-gutter))), var(--container-wide));
  margin-inline: auto;
  padding-block: var(--space-10) var(--space-20);
}

.learner-sidebar {
  position: sticky;
  top: 7rem;
  align-self: start;
  padding: var(--space-5);
}

.learner-sidebar-account {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.learner-main {
  min-width: 0;
}

.course-outline-nav {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
}

.course-outline-module {
  border: 1px solid transparent;
  border-radius: var(--radius-md);
}

.course-outline-module.is-current {
  border-color: var(--color-border);
  background: var(--color-surface-subtle);
}

.course-outline-module summary {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  min-height: var(--control-lg);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  list-style: none;
}

.course-outline-module summary::-webkit-details-marker {
  display: none;
}

.course-outline-module summary strong,
.course-outline-module summary small {
  display: block;
}

.course-outline-module summary strong {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.course-outline-module summary small {
  margin-top: var(--space-1);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
}

.outline-number {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--brand-harbor-teal);
  font-size: var(--text-xs);
  font-weight: 800;
}

.course-outline-lessons {
  display: grid;
  gap: var(--space-1);
  padding: 0 var(--space-2) var(--space-3) 3.25rem;
}

.course-outline-lessons a,
.course-outline-locked,
.course-assessment-link {
  min-height: var(--control-md);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
  text-decoration: none;
}

.course-outline-lessons a:hover,
.course-outline-lessons a.is-active,
.course-assessment-link:hover,
.course-assessment-link.is-active {
  background: var(--color-surface);
  color: var(--brand-evergreen-950);
}

.course-outline-lessons a.is-complete .icon {
  color: var(--color-success);
}

.course-outline-locked,
.course-assessment-link.is-locked {
  opacity: 0.65;
}

.course-assessment-link {
  margin-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

.breadcrumbs {
  margin-bottom: var(--space-5);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: var(--space-2);
  color: var(--color-border-strong);
  content: "/";
}

.breadcrumbs a {
  color: var(--color-link);
}

.public-main {
  min-height: calc(100vh - 12rem);
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(16rem, 1.2fr) minmax(0, 1.8fr);
  gap: var(--space-12);
  align-items: start;
  padding-block: var(--space-16) var(--space-8);
  border-top: 0;
  background: var(--brand-evergreen-950);
  color: var(--color-text-inverse-muted);
}

.footer-brand-block strong,
.footer-brand-block p {
  display: block;
}

.footer-brand-block strong {
  margin-top: var(--space-3);
  color: var(--color-text-inverse);
  font-family: var(--font-display);
  font-size: var(--text-xl);
}

.footer-brand-block p {
  max-width: 24rem;
}

.site-footer .footer-mark {
  color: var(--brand-learning-gold);
}

.footer-navigation-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.footer-navigation-groups nav {
  display: grid;
  align-content: start;
  gap: var(--space-1);
}

.footer-navigation-groups nav > strong {
  margin-bottom: var(--space-2);
  color: var(--color-text-inverse);
}

.site-footer a {
  min-height: var(--control-md);
  display: inline-flex;
  align-items: center;
  color: var(--color-text-inverse-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-text-inverse);
}

.footer-disclaimer {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-inverse-border);
  font-size: var(--text-xs);
}

@media (max-width: 70rem) {
  .site-navigation,
  .desktop-account-actions {
    display: none;
  }

  .mobile-menu-trigger,
  .course-contents-trigger {
    display: inline-flex;
  }

  .learner-layout {
    grid-template-columns: 1fr;
  }

  .learner-sidebar {
    display: none;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 47.99rem) {
  .site-header {
    gap: var(--space-3);
  }

  .brand-logo {
    width: 10rem;
  }

  .course-contents-trigger span,
  .profile-name {
    display: none;
  }

  .course-contents-trigger {
    width: var(--control-md);
    padding: 0;
  }

  .learner-layout {
    width: min(100% - (2 * var(--page-gutter)), var(--container-wide));
    padding-top: var(--space-6);
  }

  .footer-navigation-groups {
    grid-template-columns: 1fr 1fr;
  }

  .footer-disclaimer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 25rem) {
  .profile-button {
    display: none;
  }

  .footer-navigation-groups {
    grid-template-columns: 1fr;
  }
}