/* ============================================
   SINGLE LECTURE PAGE STYLES
   ============================================ */

/* ============================================
   HYBRID HERO
   ============================================ */

.lecture-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  margin-bottom: 0;
}

.lecture-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}

.lecture-hero .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-content {
  color: var(--color-white);
}

.hero-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
  display: block;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-credentials {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1.125rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.92);
}

.hero-photo-container {
  position: relative;
  max-width: 500px;
  margin-left: auto;
}

.hero-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  display: block;
}

/* Placeholder gradient for when no image is provided */
.hero-photo-placeholder {
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

/* ============================================
   INFO BAR
   ============================================ */

.lecture-info-bar {
  background: var(--color-bg-cream);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
}

.info-bar-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  align-items: center;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.info-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.info-item strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.info-badge {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-badge.members-only {
  background: var(--color-gold);
  color: var(--color-text-primary);
}

.calendar-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-left: auto;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.lecture-content {
  padding: var(--spacing-3xl) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 35% 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

/* ============================================
   LEFT SIDEBAR
   ============================================ */

.sidebar-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.sidebar-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-lg);
  display: block;
}

/* Placeholder gradient for when no image is provided */
.sidebar-photo-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  margin-bottom: var(--spacing-lg);
}

.quick-facts h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.quick-facts .credentials {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  display: block;
}

.quick-facts .access-badge {
  display: inline-block;
  background: var(--color-bg-cream);
  color: var(--color-text-primary);
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Payment Form */
.payment-form h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.payment-placeholder {
  background: var(--color-bg-cream);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   RIGHT CONTENT
   ============================================ */

.content-section {
  margin-bottom: var(--spacing-2xl);
}

.content-section h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.content-section p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.content-section p:last-child {
  margin-bottom: 0;
}

/* What You'll Learn Topics Box */
.learn-topics {
  background: var(--color-white);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--spacing-xl) var(--spacing-2xl);
  margin: var(--spacing-2xl) 0;
}

.learn-topics h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.learn-topics ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.learn-topics li {
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  position: relative;
  padding-left: 1.75rem;
  line-height: 1.6;
}

.learn-topics li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.875rem;
}

/* ============================================
   RELATED LECTURES
   ============================================ */

.related-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-cream);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.lecture-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.lecture-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.lecture-card-header {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  align-items: center;
}

.lecture-card-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

/* Placeholder gradient for when no image is provided */
.lecture-card-photo-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.lecture-card-info h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.lecture-card-credential {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-style: italic;
}

.lecture-card-body {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.lecture-card-date {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.lecture-card-location {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ============================================
   SHARE SECTION
   ============================================ */

.share-section {
  text-align: center;
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.share-icons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.share-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  text-decoration: none;
}

.share-icon:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.share-icon svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   RESPONSIVE DESIGN - TABLETS
   ============================================ */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .hero-content h1 {
    font-size: 2.75rem;
  }

  .hero-photo-container {
    max-width: 400px;
    margin: 0 auto;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

/* ============================================
   RESPONSIVE DESIGN - MOBILE
   ============================================ */

@media (max-width: 768px) {
  .lecture-hero {
    min-height: 40vh;
  }

  .hero-content h1 {
    font-size: 2.25rem;
  }

  .hero-credentials {
    font-size: 1rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .info-bar-grid {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .calendar-buttons {
    margin-left: 0;
    width: 100%;
    flex-direction: column;
  }

  .calendar-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .content-section h2 {
    font-size: 1.75rem;
  }

  .learn-topics {
    padding: var(--spacing-lg);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .lecture-hero,
  .lecture-info-bar,
  .calendar-buttons,
  .payment-form,
  .related-section,
  .share-section {
    display: none;
  }

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

  .sidebar-section {
    page-break-inside: avoid;
  }
}/* ============================================
   SINGLE LECTURE PAGE STYLES
   ============================================ */

/* ============================================
   HYBRID HERO
   ============================================ */

.lecture-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  margin-bottom: 0;
}

.lecture-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}

.lecture-hero .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-content {
  color: var(--color-white);
}

.hero-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
  display: block;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-credentials {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1.125rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.92);
}

.hero-photo-container {
  position: relative;
  max-width: 500px;
  margin-left: auto;
}

.hero-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  display: block;
}

/* Placeholder gradient for when no image is provided */
.hero-photo-placeholder {
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

/* ============================================
   INFO BAR
   ============================================ */

.lecture-info-bar {
  background: var(--color-bg-cream);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
}

.info-bar-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  align-items: center;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.info-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.info-item strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.info-badge {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-badge.members-only {
  background: var(--color-gold);
  color: var(--color-text-primary);
}

.calendar-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-left: auto;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.lecture-content {
  padding: var(--spacing-3xl) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 35% 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

/* ============================================
   LEFT SIDEBAR
   ============================================ */

.sidebar-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.sidebar-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-lg);
  display: block;
}

/* Placeholder gradient for when no image is provided */
.sidebar-photo-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  margin-bottom: var(--spacing-lg);
}

.quick-facts h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.quick-facts .credentials {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  display: block;
}

.quick-facts .access-badge {
  display: inline-block;
  background: var(--color-bg-cream);
  color: var(--color-text-primary);
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Payment Form */
.payment-form h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.payment-placeholder {
  background: var(--color-bg-cream);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   RIGHT CONTENT
   ============================================ */

.content-section {
  margin-bottom: var(--spacing-2xl);
}

.content-section h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.content-section p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.content-section p:last-child {
  margin-bottom: 0;
}

/* What You'll Learn Topics Box */
.learn-topics {
  background: var(--color-white);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--spacing-xl) var(--spacing-2xl);
  margin: var(--spacing-2xl) 0;
}

.learn-topics h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.learn-topics ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.learn-topics li {
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  position: relative;
  padding-left: 1.75rem;
  line-height: 1.6;
}

.learn-topics li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.875rem;
}

/* ============================================
   RELATED LECTURES
   ============================================ */

.related-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-cream);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.lecture-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.lecture-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.lecture-card-header {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  align-items: center;
}

.lecture-card-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

/* Placeholder gradient for when no image is provided */
.lecture-card-photo-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.lecture-card-info h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.lecture-card-credential {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-style: italic;
}

.lecture-card-body {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.lecture-card-date {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.lecture-card-location {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ============================================
   SHARE SECTION
   ============================================ */

.share-section {
  text-align: center;
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.share-icons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.share-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  text-decoration: none;
}

.share-icon:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.share-icon svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   RESPONSIVE DESIGN - TABLETS
   ============================================ */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .hero-content h1 {
    font-size: 2.75rem;
  }

  .hero-photo-container {
    max-width: 400px;
    margin: 0 auto;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

/* ============================================
   RESPONSIVE DESIGN - MOBILE
   ============================================ */

@media (max-width: 768px) {
  .lecture-hero {
    min-height: 40vh;
  }

  .hero-content h1 {
    font-size: 2.25rem;
  }

  .hero-credentials {
    font-size: 1rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .info-bar-grid {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .calendar-buttons {
    margin-left: 0;
    width: 100%;
    flex-direction: column;
  }

  .calendar-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .content-section h2 {
    font-size: 1.75rem;
  }

  .learn-topics {
    padding: var(--spacing-lg);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .lecture-hero,
  .lecture-info-bar,
  .calendar-buttons,
  .payment-form,
  .related-section,
  .share-section {
    display: none;
  }

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

  .sidebar-section {
    page-break-inside: avoid;
  }
}