.ld-course-layout {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}
.ld-course-sidebar {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--white);
}
.ld-course-sidebar .lq-progress {
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}
.ld-course-sidebar-title {
  padding: 1rem 1.25rem 0;
  color: var(--burg);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}
.ld-course-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.ld-course-list li { border-top: 1px solid var(--border); }
.ld-course-list button {
  display: flex;
  width: 100%;
  gap: 0.7rem;
  align-items: center;
  padding: 0.9rem 1.15rem;
  border: 0;
  background: transparent;
  color: var(--text-body);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.76rem;
  line-height: 1.45;
  text-align: left;
  cursor: pointer;
}
.ld-course-list button:hover,
.ld-course-list li.is-current button {
  background: var(--cream);
  color: var(--burg);
}
.ld-course-list li.is-current button { box-shadow: inset 3px 0 var(--burg); }
.ld-course-list .ld-status {
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  border: 1px solid #c9c9c9;
  border-radius: 50%;
  color: transparent;
  font-size: 0.7rem;
  line-height: 18px;
  text-align: center;
}
.ld-course-list li.is-complete .ld-status {
  border-color: var(--burg);
  background: var(--burg);
  color: var(--white);
}
.ld-course-stage .lq-lesson,
.ld-course-stage .ac-lesson { display: none; margin: 0; }
.ld-course-stage .lq-lesson.is-current,
.ld-course-stage .ac-lesson.is-current { display: block; }
.ld-course-stage .ac-intro { margin-bottom: 1.5rem; }
.ld-course-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.35rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}
.ld-course-nav button {
  border: 0;
  background: transparent;
  color: var(--burg);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  cursor: pointer;
}
.ld-course-nav button:disabled { visibility: hidden; }
.ld-course-stage .lq-next-lesson { display: none !important; }
.lq-video-poster {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: var(--void);
  cursor: pointer;
}
.lq-video-poster img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.lq-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  padding-left: 4px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 50%;
  background: rgba(24,24,24,0.72);
  color: var(--white);
  font-size: 1.25rem;
  transition: background 0.2s, transform 0.2s;
}
.lq-video-poster:hover .lq-video-play,
.lq-video-poster:focus-visible .lq-video-play {
  background: var(--burg);
  transform: translate(-50%, -50%) scale(1.06);
}
@media (min-width: 900px) {
  .ld-course-layout { grid-template-columns: minmax(220px, 250px) minmax(0, 1fr); gap: 2rem; }
  .ld-course-sidebar { position: sticky; top: 6.5rem; max-height: calc(100vh - 8rem); overflow-y: auto; }
  .ld-course-stage .lq-lesson,
  .ld-course-stage .ac-lesson { padding: 2.5rem; }
}