.course-tabs {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.course-tabs__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.course-tabs__tab {
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.04);
  cursor: pointer;
  font-size: 0.9rem;
}

.course-tabs__tab.is-active {
  background: var(--accent, #22d3ee);
  color: #020617;
  border-color: transparent;
}

.course-tabs__panels {
  border-radius: 1rem;
  padding: 1.5rem;
  background: rgba(15,23,42,0.9);
}

.course-tabs__panel {
  display: none;
}

.course-tabs__panel.is-active {
  display: block;
}

.m138-module {
  margin: 0 0 1rem;
  padding: 0.75rem 0.85rem;
  border-radius: 0.75rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.m138-module__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.m138-module__checkbox {
  width: 0.95rem;
  height: 0.95rem;
  cursor: pointer;
}

.m138-module-summary {
  margin-bottom: 0.75rem;
  padding: 0.75rem 0.3rem;
}

.m138-module-summary__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}

.m138-module-summary__label {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.7rem;
  opacity: 0.7;
}

.m138-module-summary__bar {
  position: relative;
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.5);
  overflow: hidden;
}

.m138-module-summary__fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22d3ee, #4ade80);
  transition: width 0.18s ease-out;
}


.course-tabs__tab.is-complete::after {
  content: "✓";
  margin-left: 0.35rem;
  font-size: 0.75rem;
  opacity: 0.9;
}