/* ===== Courses page ===== */

.courses-container {
  max-width: 1180px;
}

.courses-container .eyebrow {
  margin: 0 0 0.55rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.courses-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) 360px;
  gap: 2rem;
  align-items: stretch;
  padding: 3.2rem 0 2.2rem;
  border-bottom: 1px solid var(--border);
}

.courses-hero h1 {
  margin: 0;
  max-width: 850px;
  font-size: clamp(3rem, 5.5vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  color: var(--text);
}

.courses-hero-copy > p:not(.eyebrow) {
  margin: 1.1rem 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.hero-actions,
.featured-course .btn {
  margin-top: 1.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  margin-right: 0.55rem;
  padding: 0.56rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 137, 132, 0.28);
  background: rgba(0, 137, 132, 0.08);
}

.btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.teaching-snapshot {
  display: grid;
  gap: 0.75rem;
  align-content: center;
  padding: 1rem;
  border-radius: 24px;
  background:
    radial-gradient(circle at 85% 0%, rgba(0, 137, 132, 0.11), transparent 34%),
    linear-gradient(135deg, #ffffff, #f8fafc);
  border: 1px solid var(--border);
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.07);
}

.snapshot-item {
  padding: 0.85rem;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--border);
}

.snapshot-item strong {
  display: block;
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.snapshot-item span {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.featured-course {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1.2rem;
  align-items: stretch;
  margin: 2rem 0 2.6rem;
  padding: 1.4rem;
  border-radius: 26px;
  background:
    radial-gradient(circle at 100% 0%, rgba(0, 137, 132, 0.12), transparent 32%),
    linear-gradient(135deg, #ffffff, #f7fbfb);
  border: 1px solid rgba(0, 137, 132, 0.18);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.075);
}

.course-badge {
  display: inline-flex;
  width: fit-content;
  padding: 0.25rem 0.58rem;
  border-radius: 999px;
  background: rgba(0, 137, 132, 0.09);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 850;
}

.featured-course h2 {
  margin: 0.7rem 0 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--text);
}

.featured-course p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1rem;
}

.course-tags span {
  padding: 0.24rem 0.55rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 650;
}

.featured-course-side {
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  padding: 1rem;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--border);
}

.featured-course-side span {
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  border-radius: 26px;
  background: rgba(0, 137, 132, 0.09);
  color: var(--accent);
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.07em;
}

.featured-course-side p {
  max-width: 190px;
  font-size: 0.85rem;
}

.course-section {
  margin-top: 2.8rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.section-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

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

.course-card {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0.9rem;
  padding: 1.05rem;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.045);
}

.course-card.highlight {
  border-color: rgba(0, 137, 132, 0.22);
  background: linear-gradient(135deg, #ffffff, #f7fbfb);
}

.course-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: rgba(0, 137, 132, 0.09);
  color: var(--accent);
  font-weight: 900;
}

.course-meta {
  margin: 0;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
}

.course-card h3 {
  margin: 0.25rem 0 0;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.32;
}

.course-card p:not(.course-meta) {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.62;
}

.course-card a {
  display: inline-flex;
  width: fit-content;
  margin-top: 0.75rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 850;
  text-decoration: none;
}

.teaching-timeline {
  display: grid;
  gap: 0.9rem;
}

.timeline-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1rem;
  padding: 1rem;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.045);
}

.timeline-date {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 850;
}

.timeline-content h3 {
  margin: 0;
  color: var(--text);
  font-size: 1.05rem;
}

.timeline-content p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.timeline-content ul {
  margin: 0.65rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.6;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.method-card {
  padding: 1rem;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.04);
}

.method-card h3 {
  margin: 0;
  color: var(--text);
  font-size: 0.98rem;
}

.method-card p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

@media (max-width: 980px) {
  .courses-hero,
  .featured-course,
  .course-grid,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .teaching-snapshot,
  .featured-course-side {
    max-width: 520px;
  }
}

@media (max-width: 640px) {
  .courses-hero {
    padding-top: 1.8rem;
  }

  .hero-actions .btn {
    margin-bottom: 0.5rem;
  }

  .course-card,
  .timeline-row {
    grid-template-columns: 1fr;
  }
}