:root {
  --index-ink: #344767;
  --index-muted: #667085;
  --index-border: #e8ebf2;
  --index-surface: #ffffff;
  --index-surface-soft: #f8f9fc;
  --index-magenta: #cb0c9f;
  --index-magenta-soft: rgba(203, 12, 159, 0.08);
  --index-link: #596cff;
}

body.course-index-page {
  min-height: 100vh;
  background: var(--index-surface-soft);
  color: var(--index-ink);
}

.course-hero {
  position: relative;
  min-height: 17rem;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin: 1rem;
  padding: 3.75rem 1.5rem;
  background-position: center;
  background-size: cover;
  border-radius: 1rem;
}

.course-hero .mask {
  background: linear-gradient(120deg, rgba(52, 71, 103, 0.94), rgba(82, 32, 86, 0.82));
  opacity: 1 !important;
}

.course-hero-content {
  position: relative;
  z-index: 1;
  max-width: 42rem;
  margin: 0 auto;
  text-align: center;
}

.course-hero h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.course-hero p {
  margin: 0.85rem 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.98rem;
  line-height: 1.65;
}

.course-hero a {
  color: #fff;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.42);
  text-underline-offset: 0.18em;
}

.course-index-shell {
  max-width: 72rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

.course-index-tabs-wrap {
  max-width: 26rem;
  margin: 0 auto 1.5rem;
}

.course-index-tabs {
  gap: 0.35rem;
  padding: 0.35rem !important;
  background: #fff !important;
  border: 1px solid var(--index-border);
  border-radius: 0.85rem;
  box-shadow: 0 8px 24px rgba(52, 71, 103, 0.055);
}

.course-index-tabs .nav-link {
  padding: 0.7rem 1rem;
  color: var(--index-muted);
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 0.62rem;
}

.course-index-tabs .nav-link:hover {
  color: var(--index-ink);
  background: var(--index-surface-soft);
}

.course-index-tabs .nav-link.active {
  color: var(--index-magenta) !important;
  background: var(--index-magenta-soft) !important;
  box-shadow: inset 3px 0 0 var(--index-magenta) !important;
}

.course-panel {
  padding: clamp(1.25rem, 3vw, 2rem);
  background: #fff;
  border: 1px solid var(--index-border);
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(52, 71, 103, 0.055);
}

.course-panel-header {
  margin-bottom: 1.4rem;
}

.course-panel-eyebrow {
  margin: 0 0 0.35rem;
  color: var(--index-magenta);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-panel-title {
  margin: 0;
  color: var(--index-ink);
  font-size: clamp(1.35rem, 2.5vw, 1.7rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.current-course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.current-course-card {
  position: relative;
  min-height: 12.5rem;
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--index-border);
  border-radius: 0.9rem;
  color: var(--index-ink);
  text-decoration: none;
  box-shadow: 0 5px 18px rgba(52, 71, 103, 0.04);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.current-course-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: var(--index-magenta);
  content: "";
}

.current-course-card:hover,
.current-course-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(203, 12, 159, 0.28);
  color: var(--index-ink);
  box-shadow: 0 12px 26px rgba(52, 71, 103, 0.1);
}

.current-course-card:focus-visible,
.previous-course-link:focus-visible,
.course-index-tabs .nav-link:focus-visible {
  outline: 3px solid rgba(89, 108, 255, 0.25);
  outline-offset: 3px;
}

.course-code {
  align-self: flex-start;
  margin-bottom: 1rem;
  padding: 0.28rem 0.58rem;
  background: var(--index-magenta-soft);
  border-radius: 999px;
  color: var(--index-magenta);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.045em;
}

.course-name {
  margin: 0;
  color: var(--index-ink);
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.45;
}

.course-card-action {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 1.25rem;
  color: var(--index-link);
  font-size: 0.82rem;
  font-weight: 600;
}

.course-card-action .arrow,
.previous-course-link .arrow {
  transition: transform 160ms ease;
}

.current-course-card:hover .arrow,
.current-course-card:focus-visible .arrow,
.previous-course-link:hover .arrow,
.previous-course-link:focus-visible .arrow {
  transform: translateX(3px);
}

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

.previous-term-group {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--index-border);
  border-radius: 0.85rem;
}

.previous-term-title {
  margin: 0;
  padding: 0.85rem 1rem;
  background: var(--index-surface-soft);
  border-bottom: 1px solid var(--index-border);
  color: var(--index-ink);
  font-size: 0.8rem;
  font-weight: 700;
}

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

.previous-course-list li + li {
  border-top: 1px solid var(--index-border);
}

.previous-course-link {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.9rem 1rem;
  color: var(--index-ink);
  text-decoration: none;
}

.previous-course-link:hover,
.previous-course-link:focus-visible {
  background: rgba(248, 249, 252, 0.8);
  color: var(--index-link);
}

.previous-course-name {
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.45;
}

.previous-course-code {
  color: var(--index-muted);
  font-size: 0.74rem;
  font-weight: 600;
  white-space: nowrap;
}

.previous-course-link .arrow {
  color: var(--index-link);
  font-size: 0.92rem;
}

.course-index-page .footer {
  padding-top: 1.5rem !important;
  padding-bottom: 2.5rem !important;
}

.course-index-page .footer p,
.course-index-page .footer a {
  color: var(--index-muted);
  font-size: 0.82rem;
}

@media (max-width: 991.98px) {
  .current-course-grid {
    grid-template-columns: 1fr;
  }

  .current-course-card {
    min-height: 10.75rem;
  }
}

@media (max-width: 767.98px) {
  .course-hero {
    min-height: 14rem;
    margin: 0.65rem;
    padding: 3rem 1.15rem;
  }

  .course-index-shell {
    padding-top: 1rem;
  }

  .previous-course-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .current-course-card,
  .course-card-action .arrow,
  .previous-course-link .arrow {
    transition: none;
  }
}