/* buttons */
.btn {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background-color: #fff;
  font-size: var(--font-size-lg);
  font-weight: 500;
  text-align: center;
  /* 줄내림 되지마라*/
  white-space: nowrap;
  cursor: pointer;
  border-radius: 16px;
  overflow: hidden;
}
.btn:hover {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background-color: #fff;
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  /* 줄내림 되지마라*/
  background-color: gold;
  white-space: nowrap;
  cursor: pointer;
  border-radius: 16px;
  overflow: hidden;
}
/* 비활성화일떄 */
.btn:disabled {
  pointer-events: none;
  opacity: 0.5;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  /* 좀 더 명확하게 보임 visible이라 쓸때 같이씀 키보드 사요자에게 유용 */
  outline-offset: 2px;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--background);
}
.btn-primary:hover {
  opacity: 0.9;
}
.btn-secondary {
  border: 1px solid var(--border);
  background-color: var(--muted);
  color: var(--foreground);
}
.btn-secondary:hover {
  background-color: var(--border);
}
.btn-outline {
  border: 1px solid var(--border);
  background-color: var(--background);
  color: var(--primary);
}
.btn-outline:hover {
  border-color: var(--primary);
  background-color: var(--muted);
}
.btn-ghost {
  background-color: transparent;
  color: var(--foreground);
}
.btn-ghost:hover {
  background-color: var(--muted);
}
.btn-destructive {
  background-color: var(--destructive);
  color: var(--background);
}
.btn-destructive:hover {
  opacity: 0.9;
}
.btn-sm {
  min-height: 32px;
  padding: 0.25rem 0.75rem;
  font-size: var(--font-size-xs);
}
.btn-lg {
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
}
.btn-block {
  width: 100%;
  display: flex;
}
/* 아이콘이 있다면~ */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
}
.btn-icon.btn-sm {
  width: 32px;
  height: 32px;
}

/* section header */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}
.section-header .section-title {
}
.section-link {
  display: flex;
  gap: var(--spacing-s);
  align-items: baseline;
  font-weight: 500;
  line-height: 1;
  color: var(--muted-foreground);
}

.section-link:hover {
  color: var(--primary);
}

/* course-card */
.course-card {
  /* a태그에 뭐시기 */
  display: block;
  border: 1px solid var(--border);
  overflow: hidden;
  background-color: var(--card);
  cursor: pointer;
  border-radius: var(--radius-lg);
}
.course-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.course-card-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.course-card-content {
  padding: var(--spacing-md);
}
.course-card-title {
  display: -webkit-box;
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  font-weight: 600;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
}
.course-card-instructor {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}
.course-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}
.course-card-rating {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  color: var(--foreground);
}
.star {
  font-size: var(--font-size-xs);
}
.star.filled {
  color: var(--warning);
}
.star.half {
  color: var(--warning);
  opacity: 0.8;
}
.course-card-students {
  font-size: var(--font-size-xs);
  color: var(--muted-foreground);
}
.course-card-price {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--foreground);
}

/* cart-icon */
.cart-icon-link {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--foreground);
  border-radius: var(--radius-lg);
}
.cart-icon-link:hover {
  background-color: var(--muted);
}

.cart-icon {
  font-size: var(--font-size-xl);
}
.cart-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--destructive);
  font-size: 12px;
  color: #fff;
  border-radius: var(--radius-full);
}

/* swiper container with side navigation */
.swiper-container {
  position: relative;
}
.swiper-nav-btn {
  position: absolute;
  top: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-md);
  z-index: 10;
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--foreground);
  cursor: pointer;
  transform: translateY(-50%);
  border-radius: var(--radius-full);
}
.swiper-nav-prev {
  left: -22px;
}
.swiper-nav-next {
  right: -22px;
}

/* courses swiper */
.courses-swiper {
  overflow: hidden;
}

.courses-swiper .swiper-slide {
  height: auto;
}
.courses-swiper .course-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.courses-swiper .course-card-content {
  display: flex;
  flex: 1;
  flex-direction: column;
}
.courses-swiper .course-card-price {
  margin-top: auto;
}

/* breadcrumb */
.breadcrumb {
  margin-bottom: var(--spacing-lg);
}
.breadcrumb-link {
  display: inline-flex;
  gap: var(--spacing-xs);
  align-items: baseline;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--muted-foreground);
}

.breadcrumb-link:hover {
  font-weight: 700;
  color: var(--primary);
}

/* course-detail */
.course-detail-header {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}
/* 1:1 비율 */
.course-detail-thumbnail {
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-md);
}
.course-detail-thumbnail img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.course-detail-info {
  flex: 1;
}
.course-detail-info h1 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
  font-weight: 700;
}
.course-instructor {
  margin-bottom: var(--spacing-md);
  color: var(--muted-foreground);
}
.course-meta {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  margin-bottom: var(--spacing-md);
}
.course-rating {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}
.course-reviews {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}
.course-students {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}
.course-price {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--foreground);
}
.course-actions {
}

.purchase-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-direction: column;
}

.course-detail-body {
}
.course-description {
  margin-bottom: var(--spacing-2xl);
}
.course-curriculum {
}

.course-description h2 {
}
.course-curriculum h2 {
  margin-bottom: var(--spacing-2xl);
  font-size: var(--font-size-xl);
  font-weight: 700;
}
.curriculum-content {
  padding: var(--spacing-lg);
  background-color: var(--muted);
  border-radius: var(--radius-lg);
}
.curriculum-section {
}
.curriculum-section h3 {
}
.curriculum-lessons {
}
.curriculum-lesson {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}
.curriculum-lesson:last-child {
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid transparent;
}
.lesson-icon {
  color: var(--primary);
}
.lesson-title {
  flex: 1;
  font-size: var(--font-size-sm);
}
.lesson-duration {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}

/* player layout */
.player-layout {
  display: flex;
  gap: var(--spacing-lg);
}
.player-main {
  flex: 1;
}
.player-sidebar {
  width: 320px;
}
.lesson-navigation {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}
.lesson-navigation button {
  flex: 1;
}
.lesson-complete {
  padding: var(--spacing-md);
  border: 1px solid var(--border);
  background-color: var(--muted);
  border-radius: var(--radius-lg);
}
.lesson-complete label {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  font-size: var(--font-size-sm);
  cursor: pointer;
}
/* 영상오류가 앱솔루트라 밑에는 렐러리트 */
.video-player-container {
  position: relative;
  width: 100%;
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  background-color: var(--foreground);
  border-radius: var(--radius-lg);
  aspect-ratio: 16/9;
}
.video-player {
  width: 100%;
  height: 100%;
  display: block;
}
.video-error {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-direction: column;
  padding: var(--spacing-lg);
  background-color: rgba(0, 0, 0, 0.9);
  color: var(--background);
  text-align: center;
  transform: translate(-50%, -50%);
  border-radius: var(--spacing-lg);
}
.progress-section {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--muted);
  border-radius: var(--radius-lg);
}
.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}
.progress-percentage {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--foreground);
}
.progress-bar {
  width: 100%;
  height: 10px;
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  background-color: var(--border);
  border-radius: var(--radius-full);
}
.progress-fill {
  height: 100%;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}
.progress-info {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}
.curriculum {
  margin-bottom: var(--spacing-lg);
}
.curriculum h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 600;
}
.curriculum-section {
  margin-bottom: var(--spacing-md);
}
.curriculum-section h4 {
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--muted-foreground);
}
.lesson-list {
}
.lesson-item {
  margin-bottom: 2px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--spacing-md);
}
.lesson-item a {
  font-size: var(--font-size-sm);
  color: var(--foreground);
}
.lesson-item:hover {
  background-color: var(--muted);
}
/* 띄우지말아야 레슨아이템 */
.lesson-item.active {
  background-color: var(--primary);
  color: var(--background);
}
.lesson-item.active a {
  color: var(--background);
}