.course-page {
  --course-ink: #17212b;
  --course-muted: #5d6873;
  --course-line: #dfe5ea;
  --course-soft: #f5f8fa;
  --course-blue: #087da8;
  --course-blue-dark: #075d7d;
  color: var(--course-ink);
  padding-bottom: 5rem;
}

.course-page * {
  box-sizing: border-box;
}

.course-hero {
  position: relative;
  overflow: hidden;
  margin: 0 0 2.4rem;
  padding: 4rem;
  border: 1px solid #d8e6ed;
  border-radius: 16px;
  background:
    radial-gradient(circle at 90% 12%, rgba(8, 125, 168, 0.16), transparent 34%),
    linear-gradient(135deg, #f9fcfd 0%, #edf6f9 100%);
}

.course-hero::after {
  position: absolute;
  right: -55px;
  bottom: -75px;
  width: 190px;
  height: 190px;
  border: 28px solid rgba(8, 125, 168, 0.07);
  border-radius: 50%;
  content: "";
}

.course-back-link {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-bottom: 2.4rem;
  color: var(--course-blue-dark);
  font-size: 1.3rem;
  font-weight: 600;
  text-decoration: none;
}

.course-back-link .fa {
  margin-right: 0.5rem;
}

.course-eyebrow,
.course-section-kicker,
.course-announcement-date {
  margin-bottom: 0.6rem;
  color: var(--course-blue-dark);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.16rem;
  text-transform: uppercase;
}

.course-hero h2 {
  position: relative;
  z-index: 1;
  margin-bottom: 0.2rem;
  font-size: 4.6rem;
  font-weight: 600;
  letter-spacing: -0.08rem;
}

.course-hero h3 {
  position: relative;
  z-index: 1;
  margin-bottom: 1.5rem;
  color: var(--course-blue-dark);
  font-size: 2.4rem;
  font-weight: 400;
}

.course-summary {
  position: relative;
  z-index: 1;
  max-width: 610px;
  margin-bottom: 2.2rem;
  color: #42505c;
  font-size: 1.65rem;
  line-height: 1.65;
}

.course-hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.course-hero-actions .button,
.course-platform-card .button,
.course-footer-callout .button {
  margin-bottom: 0;
}

.course-section-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  margin-bottom: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--course-line);
  background: rgba(255, 255, 255, 0.96);
  white-space: nowrap;
}

.has-docked-nav .course-section-nav {
  top: 6.5rem;
}

.course-section-nav a {
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  color: #41505c;
  font-size: 1.2rem;
  font-weight: 600;
  text-decoration: none;
}

.course-section-nav a:hover,
.course-section-nav a:focus {
  background: #edf6f9;
  color: var(--course-blue-dark);
}

.course-section {
  scroll-margin-top: 13rem;
  padding: 5rem 0;
  border-bottom: 1px solid #edf0f2;
}

.course-section-heading {
  margin-bottom: 2rem;
}

.course-section-heading h4 {
  margin-bottom: 0;
  color: var(--course-ink);
  font-size: 2.7rem;
  font-weight: 500;
  letter-spacing: 0;
}

.course-section-intro {
  max-width: 670px;
  color: var(--course-muted);
}

.course-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.course-fact {
  padding: 1.6rem;
  border: 1px solid var(--course-line);
  border-radius: 10px;
  background: #fff;
}

.course-fact span {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--course-muted);
  font-size: 1.1rem;
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

.course-fact strong {
  display: block;
  font-size: 1.45rem;
  line-height: 1.35;
}

.course-announcements {
  display: grid;
  gap: 1.2rem;
}

.course-announcement {
  display: grid;
  grid-template-columns: 4.4rem 1fr;
  gap: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--course-line);
  border-radius: 12px;
  background: #fff;
}

.course-announcement-icon,
.course-platform-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.4rem;
  height: 4.4rem;
  border-radius: 12px;
  background: #e9f5f8;
  color: var(--course-blue-dark);
  font-size: 1.8rem;
}

.course-announcement h5,
.course-platform-card h5,
.course-info-grid h5 {
  margin-bottom: 0.6rem;
  color: var(--course-ink);
  font-size: 1.7rem;
  font-weight: 600;
}

.course-announcement p:last-child,
.course-platform-card p,
.course-info-grid p {
  margin-bottom: 0;
  color: var(--course-muted);
  line-height: 1.6;
}

.course-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--course-line);
  border-radius: 12px;
  background: #fff;
}

.course-schedule-table {
  width: 100%;
  min-width: 700px;
  margin-bottom: 0;
}

.course-schedule-table th {
  padding: 1.4rem 1.5rem;
  border-bottom: 1px solid var(--course-line);
  background: #f2f7f9;
  color: #3d4b55;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

.course-schedule-table td {
  padding: 1.5rem;
  border-bottom: 1px solid #edf0f2;
  color: #4f5b65;
  line-height: 1.5;
  vertical-align: top;
}

.course-schedule-table tr:last-child td {
  border-bottom: 0;
}

.course-schedule-table th:first-child,
.course-schedule-table td:first-child {
  width: 28%;
}

.course-schedule-table th:last-child,
.course-schedule-table td:last-child {
  width: 12rem;
  white-space: nowrap;
}

.course-schedule-table td p {
  margin: 0;
}

.course-topic-details {
  margin: 0;
  padding-left: 1.8rem;
}

.course-topic-details li + li {
  margin-top: 0.7rem;
}

.course-status {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: #f0f2f4;
  color: #68737d;
  font-size: 1.1rem;
  font-weight: 600;
}

.course-slide-link {
  color: #a32323;
  font-weight: 600;
  text-decoration: none;
}

.course-slide-link .fa {
  margin-right: 0.4rem;
}

.course-assignment-grid {
  display: grid;
  gap: 1.2rem;
}

.course-assignment-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem;
  border: 1px solid var(--course-line);
  border-left: 4px solid var(--course-blue);
  border-radius: 10px;
  background: #fff;
}

.course-assignment-card h5,
.course-assignment-empty h5 {
  margin-bottom: 0.5rem;
  color: var(--course-ink);
  font-size: 1.7rem;
  font-weight: 600;
}

.course-assignment-card p,
.course-assignment-empty p {
  margin-bottom: 0;
  color: var(--course-muted);
}

.course-assignment-meta {
  margin-bottom: 0.4rem !important;
  color: var(--course-blue-dark) !important;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

.course-assignment-empty {
  display: grid;
  grid-template-columns: 4.4rem 1fr;
  gap: 1.5rem;
  align-items: center;
  padding: 2rem;
  border: 1px dashed #b9c8ce;
  border-radius: 12px;
  background: var(--course-soft);
}

.course-assignment-empty > .fa {
  color: var(--course-blue-dark);
  font-size: 2.8rem;
  text-align: center;
}

.course-platform-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.course-platform-card {
  display: grid;
  grid-template-columns: 4.4rem 1fr;
  gap: 1.5rem;
  padding: 2.4rem;
  border: 1px solid var(--course-line);
  border-top: 4px solid var(--course-blue);
  border-radius: 12px;
  background: #fff;
}

.course-platform-card p {
  min-height: 7.5rem;
  margin-bottom: 1.6rem;
}

.course-platform-d2l {
  border-top-color: #d69e2e;
}

.course-platform-d2l .course-platform-icon {
  background: #fff7df;
  color: #8a5b00;
}

.course-platform-note {
  margin: 1.5rem 0 0;
  padding: 1.2rem 1.5rem;
  border-radius: 8px;
  background: var(--course-soft);
  color: var(--course-muted);
  font-size: 1.25rem;
}

.course-platform-note .fa {
  margin-right: 0.6rem;
}

.course-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.course-info-grid article {
  padding: 2rem;
  border: 1px solid var(--course-line);
  border-radius: 10px;
  background: var(--course-soft);
}

.course-info-grid article > .fa {
  margin-bottom: 1rem;
  color: var(--course-blue-dark);
  font-size: 2rem;
}

.course-footer-callout {
  margin-top: 4rem;
  padding: 2.6rem;
  border-radius: 12px;
  background: #172b36;
  color: #fff;
}

.course-footer-callout h4 {
  margin-bottom: 1.5rem;
  color: #fff;
  font-size: 2rem;
  letter-spacing: 0;
}

.course-footer-callout .course-section-kicker {
  color: #87d0e8;
}

.course-footer-callout .button {
  border-color: #fff;
  color: #fff;
}

.course-footer-callout .button:hover,
.course-footer-callout .button:focus {
  background: #fff;
  color: #172b36;
}

@media (max-width: 749px) {
  .course-page {
    padding-top: 2rem;
  }

  .course-hero {
    padding: 2.5rem 2rem;
    border-radius: 12px;
  }

  .course-hero h2 {
    font-size: 3.7rem;
  }

  .course-hero h3 {
    font-size: 2rem;
  }

  .course-summary {
    font-size: 1.5rem;
  }

  .course-section-nav {
    top: 0;
  }

  .course-section {
    scroll-margin-top: 7rem;
    padding: 3.8rem 0;
  }

  .course-facts,
  .course-platform-grid,
  .course-info-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .course-assignment-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .course-platform-card p {
    min-height: 0;
  }
}

@media (max-width: 520px) {
  .course-facts,
  .course-platform-grid,
  .course-info-grid {
    grid-template-columns: 1fr;
  }

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

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

  .course-assignment-empty > .fa {
    text-align: left;
  }

  .course-hero-actions {
    display: grid;
  }

  .course-hero-actions .button {
    width: 100%;
  }
}