/* Sidebar Panel */
.wn-sidebar {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid var(--wn-overlay-10);
  background-color: var(--wn-zinc-900);
  overflow: hidden;
  transition: width 0.3s ease-in-out;
}

.wn-sidebar--open {
  width: var(--wn-panel-sm);
}

.wn-sidebar--closed {
  width: 0;
}

.wn-sidebar-inner {
  display: flex;
  flex-direction: column;
  width: var(--wn-panel-sm);
  height: 100%;
}

/* Sidebar Header */
.wn-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--wn-space-3) var(--wn-space-4);
  border-bottom: 1px solid var(--wn-overlay-10);
}

.wn-sidebar-title {
  display: flex;
  align-items: center;
  gap: var(--wn-space-3);
  font-size: var(--wn-font-base);
  font-weight: 600;
  color: var(--wn-zinc-50);
}

.wn-sidebar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--wn-icon-btn-md);
  height: var(--wn-icon-btn-md);
  border-radius: var(--wn-radius-md);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.15s ease;
}

.wn-sidebar-close:hover {
  background: var(--wn-overlay-10);
  color: #fff;
}

/* Collections Section */
.wn-sidebar-section {
  padding: var(--wn-space-4);
  border-bottom: 1px solid var(--wn-overlay-10);
}

.wn-sidebar-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--wn-space-3);
}

.wn-sidebar-section-title {
  font-size: var(--wn-font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
}

.wn-sidebar-section-actions {
  display: flex;
  gap: var(--wn-space-1);
}

/* Collection List */
.wn-collection-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--wn-space-1);
}

.wn-collection-item {
  display: flex;
  align-items: center;
  gap: var(--wn-space-3);
  width: 100%;
  padding: var(--wn-space-3) var(--wn-space-4);
  border-radius: var(--wn-radius-md);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--wn-font-sm);
  text-align: left;
  cursor: pointer;
  transition: all var(--wn-transition-fast) ease;
}

.wn-collection-item:hover {
  background: var(--wn-overlay-5);
  color: var(--wn-zinc-50);
}

.wn-collection-item--selected {
  background: var(--wn-brand-alpha-10);
  color: var(--wn-brand-400);
}

.wn-collection-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wn-collection-item-count {
  font-size: var(--wn-font-xs);
  color: rgba(255, 255, 255, 0.3);
}

/* Content Section */
.wn-sidebar-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

/* Content Section Header - for inline style replacement */
.wn-sidebar-content-header {
  padding: var(--wn-space-3) var(--wn-space-4);
  border-bottom: 1px solid var(--wn-overlay-10);
}

/* Search and Filter */
.wn-sidebar-search {
  display: flex;
  flex-direction: column;
  gap: var(--wn-space-3);
  padding: var(--wn-space-4);
  border-bottom: 1px solid var(--wn-overlay-10);
}

.wn-search-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--wn-space-3);
  padding: var(--wn-space-2) var(--wn-space-3);
  border-radius: var(--wn-radius-md);
  border: 1px solid var(--wn-overlay-10);
  transition: border-color var(--wn-transition-fast) ease;
}

.wn-search-input-wrapper:focus-within {
  border-color: var(--wn-brand-500);
}

.wn-search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--wn-font-xs);
  color: var(--wn-zinc-50);
}

.wn-search-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.wn-search-clear {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: color 0.15s ease;
}

.wn-search-clear:hover {
  color: var(--wn-zinc-50);
}

/* Filter Tabs */
.wn-filter-tabs {
  display: flex;
  gap: var(--wn-space-1);
}

.wn-filter-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--wn-space-1);
  padding: var(--wn-space-2) var(--wn-space-3);
  border-radius: var(--wn-radius-sm);
  border: none;
  background: transparent;
  font-size: var(--wn-font-xs);
  color: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.15s ease;
}

.wn-filter-tab:hover {
  background: var(--wn-overlay-5);
  color: rgba(255, 255, 255, 0.7);
}

.wn-filter-tab--active {
  background: var(--wn-brand-alpha-10);
  color: var(--wn-brand-400);
}

/* Content List */
.wn-content-list {
  list-style: none;
  margin: 0;
  padding: var(--wn-space-3);
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--wn-space-1);
}

.wn-content-item {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: var(--wn-space-3) var(--wn-space-4);
  border-radius: var(--wn-radius-md);
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}

.wn-content-item:hover {
  background: var(--wn-overlay-5);
}

.wn-content-item--selected {
  background: var(--wn-brand-alpha-10);
}

.wn-content-item-header {
  display: flex;
  align-items: center;
  gap: var(--wn-space-3);
}

.wn-content-item-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--wn-font-sm);
  color: var(--wn-zinc-50);
}

.wn-content-item-date {
  margin-top: var(--wn-space-1);
  font-size: var(--wn-font-xs);
  color: rgba(255, 255, 255, 0.3);
}

/* Badge */
.wn-badge-draft {
  padding: var(--wn-space-1) var(--wn-space-2);
  border-radius: var(--wn-radius-sm);
  font-size: var(--wn-font-xs);
  font-weight: 500;
  background: var(--wn-warning-alpha-10);
  color: var(--wn-warning-400);
}

/* Icon Button */
.wn-sidebar-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--wn-icon-btn-sm);
  height: var(--wn-icon-btn-sm);
  border-radius: var(--wn-radius-sm);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.15s ease;
}

.wn-sidebar-icon-btn:hover {
  background: var(--wn-overlay-10);
  color: #fff;
}

.wn-sidebar-icon-btn--primary {
  color: var(--wn-brand-500);
}

.wn-sidebar-icon-btn--primary:hover {
  color: var(--wn-brand-400);
}

/* Empty State */
.wn-sidebar-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--wn-space-7);
  text-align: center;
}

.wn-sidebar-empty-text {
  font-size: var(--wn-font-xs);
  color: rgba(255, 255, 255, 0.4);
}

.wn-sidebar-empty-link {
  margin-top: var(--wn-space-3);
  font-size: var(--wn-font-xs);
  color: var(--wn-brand-500);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.wn-sidebar-empty-link:hover {
  text-decoration: underline;
}

/* Loading State */
.wn-sidebar-loading {
  padding: var(--wn-space-8);
  text-align: center;
  font-size: var(--wn-font-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ============================================================================
   SKELETON LOADERS
   ============================================================================ */

.wn-skeleton {
  background: linear-gradient(
    90deg,
    var(--wn-overlay-5) 25%,
    var(--wn-overlay-10) 50%,
    var(--wn-overlay-5) 75%
  );
  background-size: 200% 100%;
  animation: wn-skeleton-shimmer 1.5s infinite;
  border-radius: var(--wn-radius-sm);
}

@keyframes wn-skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.wn-skeleton-collection {
  display: flex;
  align-items: center;
  gap: var(--wn-space-3);
  padding: var(--wn-space-3) var(--wn-space-4);
}

.wn-skeleton-icon {
  width: 16px;
  height: 16px;
  border-radius: var(--wn-radius-sm);
}

.wn-skeleton-text {
  height: 14px;
  flex: 1;
}

.wn-skeleton-text--short {
  width: 60%;
}

.wn-skeleton-badge {
  width: 24px;
  height: 14px;
}

.wn-skeleton-content {
  display: flex;
  flex-direction: column;
  gap: var(--wn-space-1);
  padding: var(--wn-space-3) var(--wn-space-4);
}

.wn-skeleton-title {
  height: 14px;
  width: 80%;
}

.wn-skeleton-date {
  height: 12px;
  width: 40%;
}

/* ============================================================================
   LIGHT MODE OVERRIDES
   ============================================================================ */

.wn-light .wn-sidebar {
  border-right-color: var(--wn-overlay-light-10);
  background-color: #fff;
}

.wn-light .wn-sidebar-header {
  border-bottom-color: var(--wn-overlay-light-10);
}

.wn-light .wn-sidebar-title {
  color: var(--wn-zinc-900);
}

.wn-light .wn-sidebar-close {
  color: rgba(0, 0, 0, 0.5);
}

.wn-light .wn-sidebar-close:hover {
  background: var(--wn-overlay-light-5);
  color: var(--wn-zinc-900);
}

.wn-light .wn-sidebar-section {
  border-bottom-color: var(--wn-overlay-light-10);
}

.wn-light .wn-sidebar-section-title {
  color: rgba(0, 0, 0, 0.5);
}

.wn-light .wn-sidebar-content-header {
  border-bottom-color: var(--wn-overlay-light-10);
}

.wn-light .wn-collection-item {
  color: rgba(0, 0, 0, 0.6);
}

.wn-light .wn-collection-item:hover {
  background: var(--wn-overlay-light-5);
  color: var(--wn-zinc-900);
}

.wn-light .wn-collection-item--selected {
  background: var(--wn-brand-alpha-10);
  color: var(--wn-brand-600);
}

.wn-light .wn-collection-item-count {
  color: rgba(0, 0, 0, 0.3);
}

.wn-light .wn-sidebar-search {
  border-bottom-color: var(--wn-overlay-light-10);
}

.wn-light .wn-search-input-wrapper {
  border-color: var(--wn-overlay-light-10);
}

.wn-light .wn-search-input {
  color: var(--wn-zinc-900);
}

.wn-light .wn-search-input::placeholder {
  color: rgba(0, 0, 0, 0.3);
}

.wn-light .wn-search-clear {
  color: rgba(0, 0, 0, 0.3);
}

.wn-light .wn-search-clear:hover {
  color: var(--wn-zinc-900);
}

.wn-light .wn-filter-tab {
  color: rgba(0, 0, 0, 0.4);
}

.wn-light .wn-filter-tab:hover {
  background: var(--wn-overlay-light-5);
  color: rgba(0, 0, 0, 0.7);
}

.wn-light .wn-filter-tab--active {
  background: var(--wn-brand-alpha-10);
  color: var(--wn-brand-600);
}

.wn-light .wn-content-item:hover {
  background: var(--wn-overlay-light-5);
}

.wn-light .wn-content-item--selected {
  background: var(--wn-brand-alpha-10);
}

.wn-light .wn-content-item-title {
  color: var(--wn-zinc-900);
}

.wn-light .wn-content-item-date {
  color: rgba(0, 0, 0, 0.3);
}

.wn-light .wn-sidebar-icon-btn {
  color: rgba(0, 0, 0, 0.5);
}

.wn-light .wn-sidebar-icon-btn:hover {
  background: var(--wn-overlay-light-5);
  color: var(--wn-zinc-900);
}

.wn-light .wn-sidebar-empty-text {
  color: rgba(0, 0, 0, 0.4);
}

.wn-light .wn-sidebar-loading {
  color: rgba(0, 0, 0, 0.4);
}

.wn-light .wn-skeleton {
  background: linear-gradient(
    90deg,
    var(--wn-overlay-light-5) 25%,
    var(--wn-overlay-light-8) 50%,
    var(--wn-overlay-light-5) 75%
  );
  background-size: 200% 100%;
}