/* ======================================================
   MedTech Voice - Video Library Styles
   Dedicated page for YouTube channel content
   ====================================================== */

/* --- Video Library Hero --- */
.video-hero {
  position: relative;
  z-index: 1;
  padding: calc(var(--nav-height) + var(--space-16)) 0 var(--space-12);
  text-align: center;
  background: var(--color-bg-primary);
}

.video-hero__eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--color-accent-warm);
  margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-4);
  border: 1px solid rgba(249, 115, 22, 0.2);
  border-radius: var(--radius-full);
  background: rgba(249, 115, 22, 0.06);
}

.video-hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.video-hero__title em {
  font-style: normal;
  color: var(--color-accent-primary);
}

.video-hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 640px;
  margin: 0 auto var(--space-8);
}

.video-hero__stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  margin-top: var(--space-8);
}

.video-hero__stat {
  text-align: center;
}

.video-hero__stat-number {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-accent-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.video-hero__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* --- Video Filter Tabs --- */
.video-filters {
  position: relative;
  z-index: 1;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
}

.video-filters__bar {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: var(--space-2);
}

.video-filters__bar::-webkit-scrollbar {
  display: none;
}

.video-filters__tag {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.video-filters__tag:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: rgba(249, 115, 22, 0.05);
}

.video-filters__tag--active {
  background: var(--color-gradient-accent);
  color: #FFFFFF;
  border-color: transparent;
}

/* --- Video Search Bar --- */
.video-search {
  position: relative;
  z-index: 1;
  padding: var(--space-6) 0 var(--space-4);
}

.video-search__input-wrap {
  position: relative;
  max-width: 480px;
  margin: 0 auto;
}

.video-search__icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.video-search__input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.video-search__input::placeholder {
  color: var(--color-text-muted);
}

.video-search__input:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.12);
}

/* --- Video Grid --- */
.video-grid {
  position: relative;
  z-index: 1;
  padding: var(--space-8) 0 var(--space-24);
}

.video-grid__layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* --- Video Card --- */
.video-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
}

.video-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.video-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-card__thumb img {
  transform: scale(1.05);
}

.video-card__play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-card:hover .video-card__play-overlay {
  opacity: 1;
}

.video-card__play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(249, 115, 22, 0.90);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease;
}

.video-card:hover .video-card__play-btn {
  transform: scale(1.1);
}

.video-card__play-btn svg {
  width: 24px;
  height: 24px;
  fill: #FFFFFF;
  margin-left: 3px;
}

.video-card__duration {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  background: rgba(0, 0, 0, 0.8);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  padding: 2px 6px;
  border-radius: 4px;
}

.video-card__body {
  padding: var(--space-4) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.video-card__category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-accent-primary);
  margin-bottom: var(--space-2);
}

.video-card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.video-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.video-card__meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

/* --- Featured Video --- */
.video-featured {
  position: relative;
  z-index: 1;
  padding: var(--space-8) 0;
}

.video-featured__card {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-8);
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  padding: var(--space-6);
  transition: all var(--transition-base);
  cursor: pointer;
}

.video-featured__card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
}

.video-featured__thumb {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

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

.video-featured__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-gradient-accent);
  color: #FFFFFF;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.video-featured__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.video-featured__category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-accent-primary);
  margin-bottom: var(--space-3);
}

.video-featured__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.video-featured__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.video-featured__play {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-gradient-accent);
  color: #FFFFFF;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.video-featured__play:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-accent);
}

/* --- Empty State --- */
.video-grid__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) 0;
  color: var(--color-text-muted);
}

.video-grid__empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.video-grid__empty-text {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

/* --- CTA Section --- */
.video-cta {
  position: relative;
  z-index: 1;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0;
  text-align: center;
}

.video-cta__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-4);
}

.video-cta__desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
}

/* --- Animations --- */
@keyframes videoCardFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.video-card {
  animation: videoCardFadeIn 0.5s ease forwards;
}

.video-card:nth-child(1) { animation-delay: 0ms; }
.video-card:nth-child(2) { animation-delay: 60ms; }
.video-card:nth-child(3) { animation-delay: 120ms; }
.video-card:nth-child(4) { animation-delay: 180ms; }
.video-card:nth-child(5) { animation-delay: 240ms; }
.video-card:nth-child(6) { animation-delay: 300ms; }
.video-card:nth-child(7) { animation-delay: 360ms; }
.video-card:nth-child(8) { animation-delay: 420ms; }
.video-card:nth-child(9) { animation-delay: 480ms; }
.video-card:nth-child(10) { animation-delay: 540ms; }
.video-card:nth-child(11) { animation-delay: 600ms; }
.video-card:nth-child(12) { animation-delay: 660ms; }

.video-card--hidden {
  display: none;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .video-grid__layout {
    grid-template-columns: repeat(2, 1fr);
  }

  .video-featured__card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .video-hero__title {
    font-size: var(--font-size-3xl);
  }

  .video-hero__stats {
    flex-direction: column;
    gap: var(--space-6);
  }

  .video-grid__layout {
    grid-template-columns: 1fr;
  }

  .video-featured__card {
    padding: var(--space-4);
  }
}