/* Course page — extends style.css + pages.css */

/* Overview two-column layout */
.course-overview-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--sp-12);
  align-items: start;
}

.course-overview-body h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-6);
}

.course-overview-body p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

.course-overview-body p + p {
  margin-top: var(--sp-4);
}

/* Meta sidebar */
.course-meta-list {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.course-meta-item {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.course-meta-item:last-child {
  border-bottom: none;
}

.course-meta-item dt {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
}

.course-meta-item dd {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.4;
}

/* Development note section */
.course-dev-note-section h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-6);
}

.course-dev-note-section .prose p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

.course-dev-note-section .prose p + p {
  margin-top: var(--sp-4);
}

.course-dev-list {
  list-style: none;
  padding: 0;
  margin: var(--sp-8) 0 0;
  border-top: 1px solid var(--color-border);
}

.course-dev-list li {
  padding: var(--sp-6) 0;
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--sp-8);
  align-items: start;
}

.course-dev-list li strong {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  padding-top: 0.2em;
}

.course-dev-list li span {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Module list section */
.course-modules-section {
  padding-block: var(--sp-16);
}

.course-modules-header {
  max-width: var(--container-narrow);
  margin-bottom: var(--sp-12);
}

.course-modules-header h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-4);
}

.course-modules-header p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* Module list */
.course-module-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--color-border);
}

.course-module {
  border-bottom: 1px solid var(--color-border);
}

.course-module-inner {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: var(--sp-6);
  align-items: start;
  padding: var(--sp-8) 0;
}

.course-module-num {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-mid);
  padding-top: 0.35em;
}

.course-module-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin-bottom: var(--sp-3);
}

.course-module-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* Responsive */
@media (max-width: 860px) {
  .course-overview-layout {
    grid-template-columns: 1fr;
  }

  .course-dev-list li {
    grid-template-columns: 1fr;
    gap: var(--sp-2);
  }

  .course-module-inner {
    grid-template-columns: 44px 1fr;
    gap: var(--sp-4);
  }

  .course-module-inner .badge {
    display: none; /* clean up on small screens */
  }
}