.video-detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

.video-detail-main {
  min-width: 0;
}

.related-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--nav-height) + 16px);
}

.related-sidebar .section-title {
  font-size: 15px;
  margin-bottom: 12px;
}

.page-header {
  margin-bottom: 20px;
}

.page-header h1 {
  color: var(--text-primary);
  font-size: 22px;
  font-weight: 600;
}

.page-header p {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

.tags-section {
  margin-bottom: 16px;
}

.tags-section h3 {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

@media (max-width: 1200px) {
  .video-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .video-detail-layout {
    grid-template-columns: 1fr 300px;
  }
}

@media (max-width: 992px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .related-sidebar {
    position: static;
  }

  .related-sidebar .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .related-sidebar .video-card {
    display: block;
  }

  .related-sidebar .video-thumb {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .header-top .search-bar {
    display: none;
  }

  .btn-upload span {
    display: none;
  }

  .btn-upload {
    padding: 7px 10px;
  }

  .main-nav {
    display: none;
  }

  .mobile-search.active {
    display: block;
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .related-sidebar .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .video-detail-title {
    font-size: 16px;
  }

  .action-bar {
    gap: 6px;
  }

  .action-btn {
    padding: 6px 10px;
    font-size: 11px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .header-actions .icon-btn:not(:last-child) {
    display: none;
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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