/* Continue learning */
.continue-section {
  margin-bottom: 24px;
}
.continue-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--k1);
  color: var(--kw);
  padding: 20px 24px;
  border-radius: var(--r12);
  flex-wrap: wrap;
}
.continue-card-label {
  font-size: .74rem;
  color: var(--k7);
  margin-bottom: 4px;
}
.continue-card-title {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 2px;
}
.continue-card-lesson {
  font-size: .82rem;
  color: var(--k7);
}
.continue-card-btn {
  flex-shrink: 0;
  padding: 10px 20px;
  border-radius: var(--r8);
  border: none;
  background: var(--kw);
  color: var(--k1);
  font-size: .84rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: opacity .15s;
}
.continue-card-btn:hover { opacity: .85; }

.courses-section-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--k1);
  margin-bottom: 12px;
}

/* Courses grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.course-card {
  background: var(--kw);
  border: 1px solid var(--bd);
  border-radius: var(--r12);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow .15s, transform .15s;
}
.course-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
  transform: translateY(-2px);
}

.course-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  background: var(--k1);
  position: relative;
}

.course-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--r99);
  font-size: .7rem;
  font-weight: 700;
}
.course-badge--recommended {
  background: var(--kw);
  color: var(--k1);
}
.course-badge--progress {
  background: var(--k4);
  color: var(--kw);
}
.course-badge--done {
  background: var(--kw);
  color: var(--k1);
}

.course-body {
  padding: 20px;
}
.course-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.course-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r8);
  background: var(--k1);
  color: var(--kw);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .9rem;
  flex-shrink: 0;
}
.course-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--k1);
  line-height: 1.3;
}
.course-desc {
  font-size: .8rem;
  color: var(--k5);
  line-height: 1.5;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-progress-label {
  font-size: .74rem;
  color: var(--k6);
  margin-bottom: 6px;
}
.course-progress-bar {
  height: 8px;
  background: var(--k8);
  border: 1px solid var(--bd);
  border-radius: var(--r99);
  overflow: hidden;
}
.course-progress-fill {
  height: 100%;
  background: var(--k1);
  border-radius: var(--r99);
  transition: width .3s ease;
}

/* Course detail */
.course-detail {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.course-detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  color: var(--k5);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
  margin-bottom: 20px;
  transition: color .15s;
}
.course-detail-back:hover { color: var(--k1); }

.course-detail-layout {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.course-detail-main {
  flex: 1;
  min-width: 0;
}
.course-detail-sidebar {
  width: 300px;
  flex-shrink: 0;
  border: 1px solid var(--bd);
  border-radius: var(--r12);
  overflow: hidden;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

/* Video */
.course-video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background: var(--k1);
  border-radius: var(--r12);
  overflow: hidden;
  margin-bottom: 20px;
}
.course-video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Lesson info */
.lesson-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--k1);
  margin-bottom: 8px;
}
.lesson-desc {
  font-size: .86rem;
  color: var(--k4);
  line-height: 1.6;
  margin-bottom: 20px;
}
.lesson-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.lesson-complete-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--r8);
  border: 1.5px solid var(--bd);
  background: var(--kw);
  font-size: .84rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  color: var(--k4);
  transition: all .15s;
}
.lesson-complete-btn:hover {
  border-color: var(--k1);
  color: var(--k1);
}
.lesson-complete-btn.completed {
  background: var(--k1);
  color: var(--kw);
  border-color: var(--k1);
}

/* Sidebar */
.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--bd);
}
.sidebar-course-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--k1);
  margin-bottom: 4px;
}
.sidebar-progress {
  font-size: .75rem;
  color: var(--k6);
}

.sidebar-module {
  border-bottom: 1px solid var(--k9);
}
.sidebar-module-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  cursor: pointer;
  font-size: .82rem;
  font-weight: 700;
  color: var(--k1);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
  transition: background .1s;
}
.sidebar-module-hd:hover { background: var(--k9); }

.sidebar-lessons {
  display: none;
}
.sidebar-lessons.open { display: block; }

.sidebar-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px 9px 24px;
  cursor: pointer;
  font-size: .8rem;
  color: var(--k4);
  transition: background .1s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.sidebar-lesson:hover { background: var(--k9); }
.sidebar-lesson.active {
  background: var(--k9);
  font-weight: 700;
  color: var(--k1);
}
.sidebar-lesson.done { color: var(--k5); }
.sidebar-lesson-check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--k7);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sidebar-lesson.done .sidebar-lesson-check {
  background: var(--k1);
  border-color: var(--k1);
}

/* Confetti */
@keyframes confettiFall {
  0% { transform: translateY(-100px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}
.confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--k1);
  animation: confettiFall 2s ease-in forwards;
  z-index: 99999;
  pointer-events: none;
}

/* Responsive */
@media (max-width: 960px) {
  .course-detail-layout { flex-direction: column; }
  .course-detail-sidebar {
    width: 100%;
    position: static;
    max-height: 300px;
  }
}
@media (max-width: 640px) {
  .courses-grid { grid-template-columns: 1fr; }
}