/* KN Single Course - Video Section */

/* Video Section */
.kn-sc-video {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-primary);
}

.kn-sc-video-content {
  text-align: center;
  margin: 0 auto;
}

.kn-sc-video-title {
  color: var(--primary-light);
  font-size: var(--font-size-3xl);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-2xl);
  font-family: var(--font-primary);
}

.kn-sc-video-player {
  position: relative;
  margin: 0 auto;
}

.kn-sc-video-thumbnail {
  position: relative;
  display: inline-block;
  width: 100%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.kn-sc-video-thumbnail:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.kn-sc-video-thumbnail img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.kn-sc-video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: none;
  border: none;
  cursor: pointer;
  width: 80px;
  height: 80px;
  transition: var(--transition-normal);
  z-index: 2;
  text-decoration: none;
  display: inline-block;
}

.kn-sc-video-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
  color: var(--primary-light);
}

.kn-sc-video-play-btn:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 4px;
}

.kn-sc-video-play-icon {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
  transition: var(--transition-normal);
}

.kn-sc-video-play-btn:hover .kn-sc-video-play-icon {
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
}

/* Video overlay effect */
.kn-sc-video-thumbnail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(6, 80, 145, 0.3) 0%,
    rgba(26, 147, 202, 0.3) 100%
  );
  opacity: 0;
  transition: var(--transition-normal);
  z-index: 1;
}

.kn-sc-video-thumbnail:hover::before {
  opacity: 1;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.kn-sc-video-title {
  animation: fadeInUp 0.8s ease-out;
}

.kn-sc-video-player {
  animation: fadeInScale 1s ease-out 0.2s both;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .kn-sc-video {
    padding: var(--spacing-xl) 0;
  }

  .kn-sc-video-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
  }

  .kn-sc-video-play-btn {
    width: 70px;
    height: 70px;
  }
}

@media (max-width: 768px) {
  .kn-sc-video {
    padding: var(--spacing-xl) 0;
  }

  .kn-sc-video-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
  }

  .kn-sc-video-play-btn {
    width: 60px;
    height: 60px;
  }

  .kn-sc-video-thumbnail {
    border-radius: var(--border-radius-md);
  }
}

@media (max-width: 480px) {
  .kn-sc-video {
    padding: var(--spacing-lg) 0;
  }

  .kn-sc-video-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
  }

  .kn-sc-video-play-btn {
    width: 50px;
    height: 50px;
  }

  .kn-sc-video-thumbnail {
    border-radius: var(--border-radius-sm);
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  .kn-sc-video-title,
  .kn-sc-video-player {
    animation: none;
  }

  .kn-sc-video-thumbnail,
  .kn-sc-video-play-btn,
  .kn-sc-video-play-icon {
    transition: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .kn-sc-video-play-btn {
    background: var(--primary-color);
    border-radius: 50%;
    padding: var(--spacing-sm);
  }

  .kn-sc-video-thumbnail::before {
    background: rgba(0, 0, 0, 0.5);
  }
}