@layer lu-components {
  /* ==========================================================================
     LuCodeBlock (FLAT KEBAB-CASE)
     ========================================================================== */
  
  .lu-code-block-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--lu-space-2);
    width: 100%;
  }

  .lu-code-block-header {
    display: flex;
    flex-direction: column;
    gap: var(--lu-space-2);
    margin-bottom: var(--lu-space-4);
  }

  .lu-code-block-title {
    /* Inherits from LuText variant="section-title" */
  }

  .lu-code-block-description {
    /* Inherits from LuText variant="body" */
  }

  .lu-code-block-card,
  .lu-code-block-card--preview {
    border-radius: var(--lu-radius-card);
    border: 1px solid var(--lu-color-border);
    background: var(--lu-color-surface-raised);
    overflow: hidden;
  }

  .lu-code-block-preview-area {
    padding: var(--lu-space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 8rem;
    background: var(--lu-color-surface);
  }

  .lu-code-block-preview-area--preview {
    padding: var(--lu-space-6);
    background: var(--lu-color-surface);
    min-height: 18rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
  }

  .lu-code-block-code-area,
  .lu-code-block-code-area--preview {
    display: flex;
    flex-direction: column;
  }

  .lu-code-block-split-container,
  .lu-code-block-split-container--preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 20rem;
  }

  .lu-code-block-split-area,
  .lu-code-block-split-area--preview {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--lu-color-border);
  }

  .lu-code-block-code-header,
  .lu-code-block-code-header--preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--lu-space-2) var(--lu-space-3);
    border-bottom: 1px solid var(--lu-color-border);
    background: var(--lu-color-surface-sunken);
  }

  .lu-code-block-badge,
  .lu-code-block-badge--preview {
    font-size: var(--lu-text-xs);
    font-weight: var(--lu-font-medium);
    color: var(--lu-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .lu-code-block-copy-button,
  .lu-code-block-copy-button--preview {
    /* Base inheritance comes from LuButton */
  }

  .lu-code-block-code-content,
  .lu-code-block-code-content--preview {
    overflow-x: auto;
  }

  .lu-code-block-code-content pre,
  .lu-code-block-code-content--preview pre {
    margin: 0;
    padding: var(--lu-space-4);
    font-size: 0.8125rem;
    line-height: 1.65;
    tab-size: 2;
  }

  .lu-code-block-code-content code,
  .lu-code-block-code-content--preview code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  }

  /* ==========================================================================
     LuBreadcrumb
     ========================================================================== */
  
  .lu-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--lu-space-1);
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: var(--lu-text-sm);
  }

  .lu-breadcrumb__item {
    display: inline-flex;
    align-items: center;
    gap: var(--lu-space-1);
  }

  .lu-breadcrumb__link {
    color: var(--lu-color-text-muted);
    font-size: var(--lu-text-sm);
    text-decoration: none;
    transition: color var(--lu-duration-base);
  }

  .lu-breadcrumb__link:hover {
    color: var(--lu-color-text);
  }

  .lu-breadcrumb__page {
    color: var(--lu-color-text);
    font-size: var(--lu-text-sm);
    font-weight: var(--lu-font-medium);
    display: inline-flex;
    align-items: center;
  }

  .lu-breadcrumb__separator {
    color: var(--lu-color-text-disabled);
    flex-shrink: 0;
    width: 0.875rem;
    height: 0.875rem;
  }

  /* ==========================================================================
     LuPagination
     ========================================================================== */
  
  .lu-pagination {
    display: inline-flex;
    align-items: center;
    gap: var(--lu-space-1);
  }

  .lu-pagination__button {
    min-width: 2rem;
    height: 2rem;
    padding: 0;
  }

  .lu-pagination__pages {
    display: inline-flex;
    align-items: center;
    gap: 2px;
  }

  .lu-pagination__page-button {
    min-width: 2rem;
    height: 2rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--lu-text-sm);
  }

  .lu-pagination__ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    font-size: var(--lu-text-sm);
    color: var(--lu-color-text-muted);
  }

  /* ==========================================================================
     LuTimeline
     ========================================================================== */

  .lu-timeline {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .lu-timeline-item {
    display: flex;
    gap: var(--lu-space-3);
    width: 100%;
  }

  .lu-timeline-item__dot-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
  }

  .lu-timeline-item__dot {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: var(--lu-radius-full);
    border: 2px solid var(--lu-color-border);
    background: var(--lu-color-surface-raised);
    flex-shrink: 0;
    color: var(--lu-color-text-muted);
    z-index: 1;
  }

  .lu-timeline-item__dot--success {
    border-color: var(--lu-color-success);
    background: var(--lu-color-success-surface);
    color: var(--lu-color-success);
  }

  .lu-timeline-item__dot--warning {
    border-color: var(--lu-color-warning);
    background: var(--lu-color-warning-surface);
    color: var(--lu-color-warning);
  }

  .lu-timeline-item__dot--danger {
    border-color: var(--lu-color-danger);
    background: var(--lu-color-danger-surface);
    color: var(--lu-color-danger);
  }

  .lu-timeline-item__dot--info {
    border-color: var(--lu-color-info);
    background: var(--lu-color-info-surface);
    color: var(--lu-color-info);
  }

  .lu-timeline-item__dot-compact {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: var(--lu-radius-full);
    border: 2px solid var(--lu-color-border);
    background: var(--lu-color-surface-raised);
    flex-shrink: 0;
  }

  /* Modifiers for compact dot */
  .lu-timeline-item__dot-compact--success { border-color: var(--lu-color-success); background: var(--lu-color-success-surface); color: var(--lu-color-success); }
  .lu-timeline-item__dot-compact--warning { border-color: var(--lu-color-warning); background: var(--lu-color-warning-surface); color: var(--lu-color-warning); }
  .lu-timeline-item__dot-compact--danger { border-color: var(--lu-color-danger); background: var(--lu-color-danger-surface); color: var(--lu-color-danger); }
  .lu-timeline-item__dot-compact--info { border-color: var(--lu-color-info); background: var(--lu-color-info-surface); color: var(--lu-color-info); }

  .lu-timeline-item__connector {
    flex: 1;
    width: 2px;
    background: var(--lu-color-border);
    margin: var(--lu-space-1) 0;
    min-height: var(--lu-space-8);
  }

  .lu-timeline-item__content {
    flex: 1;
    padding-bottom: var(--lu-space-8);
    padding-top: var(--lu-space-1);
  }

  .lu-timeline-item__date {
    font-size: var(--lu-text-xs);
    color: var(--lu-color-text-muted);
    display: block;
    margin-bottom: var(--lu-space-1);
  }

  .lu-timeline-item__title {
    font-size: var(--lu-text-sm);
    font-weight: var(--lu-font-medium);
    color: var(--lu-color-text);
    margin-bottom: var(--lu-space-1);
  }

  /* ==========================================================================
     LuAvatar
     ========================================================================== */

  .lu-avatar {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--lu-radius-full);
    background: var(--lu-color-surface-sunken);
    border: 1px solid var(--lu-color-border);
    flex-shrink: 0;
    font-size: var(--lu-text-sm);
    font-weight: var(--lu-font-medium);
    color: var(--lu-color-text-muted);
    width: 2rem;
    height: 2rem;
  }

  .lu-avatar--sm {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.625rem;
  }

  .lu-avatar--md {
    width: 2rem;
    height: 2rem;
    font-size: var(--lu-text-xs);
  }

  .lu-avatar--lg {
    width: 2.5rem;
    height: 2.5rem;
    font-size: var(--lu-text-sm);
  }

  .lu-avatar--xl {
    width: 3.5rem;
    height: 3.5rem;
    font-size: var(--lu-text-base);
  }

  .lu-avatar--square {
    border-radius: var(--lu-radius-3);
  }

  .lu-avatar__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .lu-avatar__fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    user-select: none;
  }

  /* ==========================================================================
     LuListItem
     ========================================================================== */

  .lu-list-item {
    display: flex;
    align-items: center;
    gap: var(--lu-space-3);
    padding: var(--lu-space-2) var(--lu-space-4);
    font-size: var(--lu-text-sm);
    color: var(--lu-color-text);
    transition: background var(--lu-duration-fast);
  }

  .lu-list-item.cursor-pointer:hover {
    background: var(--lu-color-surface-hover);
  }

  .lu-list-item--active {
    background: color-mix(in srgb, var(--lu-color-primary) 8%, transparent);
    color: var(--lu-color-primary);
  }

  .lu-list-item--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
  }

  .lu-list-item__leading {
    flex-shrink: 0;
    color: var(--lu-color-text-muted);
  }

  .lu-list-item__content {
    flex: 1;
    min-width: 0;
  }

  .lu-list-item__trailing {
    flex-shrink: 0;
    color: var(--lu-color-text-muted);
  }

  /* ==========================================================================
     LuTree
     ========================================================================== */

  .lu-tree {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .lu-tree-node {
    display: flex;
    flex-direction: column;
  }

  .lu-tree-node__content {
    display: flex;
    align-items: center;
    gap: var(--lu-space-1);
    padding: var(--lu-space-1) var(--lu-space-2);
    padding-left: calc(var(--lu-space-2) + (var(--lu-tree-depth, 0) * var(--lu-space-4)));
    border-radius: var(--lu-radius-2);
    cursor: pointer;
    outline: none;
    transition: background var(--lu-duration-fast);
    min-height: 1.75rem;
  }

  .lu-tree-node__content:hover {
    background: var(--lu-color-surface-hover);
  }

  .lu-tree-node__content:focus-visible {
    outline: 2px solid var(--lu-color-border-focus);
    outline-offset: -2px;
  }

  .lu-tree-node__content--selected {
    background: color-mix(in srgb, var(--lu-color-primary) 8%, transparent);
    color: var(--lu-color-primary);
  }

  .lu-tree-node__content--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
  }

  .lu-tree-node__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    color: var(--lu-color-text-muted);
    cursor: pointer;
  }

  .lu-tree-node__label {
    font-size: var(--lu-text-sm);
    color: inherit;
  }

  .lu-tree-node__children {
    display: flex;
    flex-direction: column;
  }
  
  .lu-tree-node__checkbox {
    display: inline-flex;
    align-items: center;
    margin-right: var(--lu-space-2);
  }

  /* ==========================================================================
     LuTooltip
     ========================================================================== */

  .lu-tooltip {
    position: relative;
    display: inline-flex;
  }

  .lu-tooltip__content {
    position: absolute;
    z-index: var(--lu-z-tooltip);
    background: var(--lu-color-surface-overlay);
    color: var(--lu-color-text);
    font-size: var(--lu-text-xs);
    padding: var(--lu-space-1) var(--lu-space-2);
    border-radius: var(--lu-radius-2);
    border: 1px solid var(--lu-color-border);
    box-shadow: var(--lu-shadow-md);
    white-space: nowrap;
    pointer-events: none;
    max-width: 16rem;
  }

  /* ==========================================================================
     LuMenu
     ========================================================================== */

  .lu-menu {
    position: relative;
    display: inline-flex;
  }

  .lu-menu__trigger {
    display: inline-flex;
    cursor: pointer;
  }

  .lu-menu__content {
    background: var(--lu-color-surface-raised);
    border: 1px solid var(--lu-color-border);
    border-radius: var(--lu-radius-card);
    box-shadow: var(--lu-shadow-lg);
    overflow: hidden;
    min-width: 10rem;
    padding: var(--lu-space-1);
  }

  .lu-menu__group {
    display: flex;
    flex-direction: column;
    gap: 1px;
  }

  .lu-menu-item {
    display: flex;
    width: 100%;
    align-items: center;
    gap: var(--lu-space-2);
    padding: var(--lu-space-2) var(--lu-space-3);
    border-radius: var(--lu-radius-2);
    border: none;
    background: transparent;
    font-size: var(--lu-text-sm);
    color: var(--lu-color-text);
    cursor: pointer;
    text-align: left;
    transition: background var(--lu-duration-fast);
    outline: none;
  }

  .lu-menu-item:hover {
    background: var(--lu-color-surface-hover);
  }

  .lu-menu-item:focus-visible {
    outline: 2px solid var(--lu-color-border-focus);
    outline-offset: 2px;
  }

  .lu-menu-item[disabled],
  .lu-menu-item[data-disabled] {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
  }

}