/**
 * HrdFlex Lecture Detail Theme CSS
 * HRD Archive 강의 페이지 통합 디자인 언어 시스템
 * Created: 배서연
 */

/* ========================================
   1. 기초 디자인 시스템
   ======================================== */
@import url('./hrdflex.theme.css');

/* ========================================
   2. 강의 상세페이지 레이아웃
   ======================================== */

.flex {
  flex-direction: row;
}

a:hover {
    color: var(--hrdflex-blue);
}

.lecture-detail-container {
  max-width: 1400px;
  min-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1rem;
  background: var(--bg-white);
}

.lecture-detail-wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  align-items: start;
}

/* Main Content Area */
.lecture-detail-main {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

/* Sidebar */
.lecture-detail-sidebar {
  position: sticky;
  top: 100px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

/* ========================================
   3. 강의 헤더 섹션
   ======================================== */
.lecture-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-light);
}

.lecture-title-wrap {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.lecture-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  flex: 1;
  min-width: 300px;
}

.lecture-badges {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.ico-best {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  border-radius: 50%;
  margin-right: 0.5rem;
}

.ico-best::before {
  content: "★";
  color: white;
  font-size: 1.2rem;
}

/* ========================================
   4. 강의 썸네일 섹션
   ======================================== */
.lecture-media-section {
  display: grid;
  grid-template-columns: 450px 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
  align-items: start;
}

.lecture-thumbnail {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background: #f0f0f0;
}

.lecture-thumbnail img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
  transition: var(--transition-smooth);
}

.lecture-thumbnail:hover img {
  transform: scale(1.05);
}

.lecture-info-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: 100%;
}

.lecture-info-grid {
  display: grid;
  gap: 1rem;
  background: var(--bg-light);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.info-item dt {
  font-size: var(--font-size-sm);
  color: var(--text-gray);
  font-weight: 500;
  min-width: 80px;
}

.info-item dd {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  font-weight: 600;
}

.info-item i {
  color: var(--primary-blue);
  width: 20px;
  text-align: center;
}

/* ========================================
   5. 상호작용 버튼 섹션
   ======================================== */
.lecture-actions {
  display: flex;
  gap: 1rem;
  margin-top: auto;
}

.btn-favorite,
.btn-enroll {
  flex: 1;
  padding: 1rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-favorite {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-favorite:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
}

.btn-favorite.active {
  background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
}

.btn-enroll {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #0052cc 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
}

.btn-enroll:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.4);
}

/* ========================================
   6. 과정 컨텐츠 섹션
   ======================================== */
.course-content-section {
  margin-top: 2rem;
}

.content-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.content-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.content-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.content-card-title i {
  color: var(--primary-blue);
}

.content-card-body {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  line-height: 1.8;
}

/* 과정 소개 */
.course-intro {
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
  border-radius: var(--radius-md);
  line-height: 1.8;
}

/* 학습컨텐츠 목록 */
.curriculum-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.curriculum-item {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  margin-bottom: 0.5rem;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  border-left: 3px solid transparent;
}

.curriculum-item:hover {
  background: linear-gradient(90deg, rgba(0, 102, 255, 0.05) 0%, var(--bg-light) 100%);
  transform: translateX(4px);
}

.curriculum-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--primary-blue);
  color: white;
  border-radius: 50%;
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-right: 1rem;
  flex-shrink: 0;
}

.curriculum-title {
  flex: 1;
  color: var(--text-dark);
  font-weight: 500;
}

.curriculum-duration {
  color: var(--text-gray);
  font-size: var(--font-size-sm);
  margin-left: auto;
}

/* ========================================
   7. 추천강의 목록(사이드바)
   ======================================== */
.recommendation-section {
  margin-top: 2rem;
}

.recommendation-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-light);
}

.recommendation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.recommendation-card {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: pointer;
}

.recommendation-card:hover {
  background: var(--bg-light);
  transform: translateX(4px);
}

.recommendation-img {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.recommendation-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recommendation-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.recommendation-info h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.recommendation-info p {
  font-size: var(--font-size-xs);
  color: var(--hrdflex-blue);
  margin: 0;
}

/* ========================================
   8. 뒤로가기 버튼
   ======================================== */
.btn-back-wrap {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  background: var(--bg-light);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition-base);
  cursor: pointer;
  text-decoration: none;
}

.btn-back:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn-back i {
  transition: var(--transition-base);
}

.btn-back:hover i {
  transform: translateX(-4px);
}

/* ========================================
   9. 강의 상세페이지 반응형 디자인
   ======================================== */
@media (max-width: 1200px) {
  .lecture-detail-container {
    max-width: 100%;
    padding: 1.5rem 1rem;
    min-width: initial;
  }

  .lecture-detail-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .lecture-detail-sidebar {
    position: relative;
    top: auto;
    max-width: 600px;
    margin: 2rem auto 0;
  }

  .lecture-media-section {
    grid-template-columns: 1fr;
  }

  .lecture-thumbnail {
    max-width: 500px;
    margin: 0 auto;
  }

  .lecture-thumbnail img {
    height: auto;
    max-height: 300px;
  }
}

@media (max-width: 768px) {
  .lecture-detail-main {
    padding: 1.5rem;
  }

  .lecture-title {
    font-size: var(--font-size-2xl);
  }

  .lecture-info-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .lecture-actions {
    flex-direction: column;
  }

  .btn-favorite,
  .btn-enroll {
    width: 100%;
  }

  .curriculum-item {
    padding: 0.75rem;
  }

  .curriculum-number {
    width: 1.75rem;
    height: 1.75rem;
    font-size: var(--font-size-xs);
  }

  .recommendation-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .lecture-detail-container {
    padding: 0.75rem 0.5rem;
  }

  .lecture-detail-main {
    padding: 1rem;
    border-radius: var(--radius-md);
    box-shadow: none;
    border: 1px solid var(--border-light);
  }

  .lecture-detail-sidebar {
    padding: 1rem;
    margin-top: 1rem;
  }

  .lecture-header {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
  }

  .lecture-title {
    font-size: var(--font-size-lg);
    line-height: 1.2;
  }

  .lecture-badges {
    width: 100%;
    justify-content: flex-start;
  }

  .badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.65rem;
  }

  .lecture-media-section {
    gap: 1rem;
  }

  .lecture-thumbnail {
    width: 100%;
    max-width: none;
  }

  .lecture-thumbnail img {
    height: auto;
    max-height: 200px;
    width: 100%;
    object-fit: cover;
  }

  .lecture-info-grid {
    padding: 1rem;
    grid-template-columns: 1fr;
  }

  .info-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-light);
  }

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

  .info-item dt {
    min-width: 60px;
    font-size: 0.75rem;
  }

  .info-item dd {
    font-size: 0.85rem;
  }

  .lecture-actions {
    flex-direction: column;
    gap: 0.75rem;
  }

  .btn-favorite,
  .btn-enroll {
    width: 100%;
    padding: 0.875rem;
    font-size: 0.9rem;
  }

  .content-card {
    padding: 1rem;
    margin-bottom: 1rem;
  }

  .content-card-title {
    font-size: var(--font-size-base);
    padding-bottom: 0.5rem;
    margin-bottom: 0.75rem;
  }

  .content-card-title i {
    font-size: 0.9rem;
  }

  .course-intro {
    padding: 0.75rem;
    font-size: 0.85rem;
  }

  .curriculum-list {
    gap: 0.5rem;
  }

  .curriculum-item {
    padding: 0.75rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .curriculum-number {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.65rem;
  }

  .curriculum-title {
    font-size: 0.85rem;
    line-height: 1.4;
  }

  .curriculum-duration {
    margin-left: 0;
    font-size: 0.75rem;
    color: var(--text-light);
  }

  .recommendation-title {
    font-size: var(--font-size-base);
  }

  .recommendation-card {
    padding: 0.5rem;
  }

  .recommendation-img {
    width: 60px;
    height: 45px;
  }

  .recommendation-info h4 {
    font-size: 0.75rem;
  }

  .btn-back-wrap {
    margin-top: 2rem;
    padding-top: 1rem;
  }

  .btn-back {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
}

/* ========================================
   10. 로딩 및 Wireframe
   ======================================== */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-title {
  height: 2rem;
  margin-bottom: 1rem;
}

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-img {
  aspect-ratio: 16/9;
  margin-bottom: 1rem;
}

/* ========================================
   11. 접근성 관련
   ======================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 여기 이상하니까 나중에 꼭 체크하기!!!!!!! */
.btn-favorite:focus-visible,
.btn-enroll:focus-visible,
.btn-back:focus-visible,
.recommendation-card:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 3px;
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
  .content-card {
    border: 2px solid var(--text-dark);
  }

  .btn-favorite,
  .btn-enroll {
    border: 2px solid transparent;
  }

  .btn-favorite:focus,
  .btn-enroll:focus {
    border-color: var(--text-dark);
  }
}

/* 움직임 최소화 모드 지원 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}