/* ================================================================
   Library primitives — 记忆 / 知识库共享的信息管理界面

   两页只在业务内容上不同：记忆是短规则与属性，知识库是标题、标签和
   Markdown。页面骨架、搜索、筛选、卡片、详情、空态、焦点和动效由本层
   统一，避免各业务 CSS 继续演化成两套设计系统。
   ================================================================ */

:is(#memory-view, #kb-view).library-view {
  flex: 1;
  height: calc(100vh - 52px);
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  padding: var(--space-xl);
}

:is(#memory-view, #kb-view) .library-view-inner {
  width: 100%;
  max-width: 1400px;
  height: 100%;
  min-height: 0;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

:is(#memory-view, #kb-view) .library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-shrink: 0;
}

:is(#memory-view, #kb-view) .library-search-box {
  flex: 1;
  min-width: 180px;
  height: 34px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  background: var(--surface-secondary);
  color: var(--text-tertiary);
  cursor: text;
  transition: border-color var(--transition-fast), background var(--transition-fast),
    box-shadow var(--transition-fast), color var(--transition-fast);
}

:is(#memory-view, #kb-view) .library-search-box:hover {
  border-color: var(--rule-strong);
}

:is(#memory-view, #kb-view) .library-search-box:focus-within {
  border-color: var(--accent);
  background: var(--surface-primary);
  box-shadow: 0 0 0 1px var(--accent-border);
  color: var(--accent);
}

:is(#memory-view, #kb-view) .library-search-input {
  flex: 1;
  min-width: 0;
  height: 32px;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  font-size: var(--fs-l4);
}

:is(#memory-view, #kb-view) .library-search-input::placeholder {
  color: var(--text-tertiary);
}

:is(#memory-view, #kb-view) .library-search-input::-webkit-search-cancel-button {
  cursor: pointer;
}

:is(#memory-view, #kb-view) .library-header-actions,
:is(#memory-view, #kb-view) .library-reader-actions,
:is(#memory-view, #kb-view) .library-editor-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

:is(#memory-view, #kb-view) .library-header-actions > button,
:is(#memory-view, #kb-view) .library-reader-actions > button,
:is(#memory-view, #kb-view) .library-editor-actions > button {
  min-height: 32px;
}

:is(#memory-view, #kb-view) .library-header-actions .btn-accent,
:is(#memory-view, #kb-view) .library-reader-actions .btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

:is(#memory-view, #kb-view) .library-toggle-control {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-sm);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--fs-l5);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

:is(#memory-view, #kb-view) .library-toggle-control:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

:is(#memory-view, #kb-view) .library-toggle-control .toggle-switch {
  display: inline-flex;
}

:is(#memory-view, #kb-view) .library-danger-action:hover {
  border-color: color-mix(in srgb, var(--error) 38%, var(--rule));
  background: var(--error-bg);
  color: var(--error);
}

:is(#memory-view, #kb-view) .library-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-shrink: 0;
}

:is(#memory-view, #kb-view) .library-filter-bar {
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

:is(#memory-view, #kb-view) .library-filter-bar > button {
  flex-shrink: 0;
  min-height: 24px;
  padding: 3px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--surface-secondary);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: var(--fs-l5);
  cursor: pointer;
  transition: transform 120ms var(--ease-winui), background var(--transition-fast),
    color var(--transition-fast), border-color var(--transition-fast);
}

:is(#memory-view, #kb-view) .library-filter-bar > button:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

:is(#memory-view, #kb-view) .library-filter-bar > button:active {
  transform: scale(0.96);
}

:is(#memory-view, #kb-view) .library-filter-bar > button.active {
  border-color: var(--accent-border);
  background: var(--accent-subtle);
  color: var(--accent);
}

:is(#memory-view, #kb-view) .library-toolbar-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  color: var(--text-tertiary);
  font-size: var(--fs-l5);
}

:is(#memory-view, #kb-view) .library-toolbar-meta > * + *::before {
  content: '·';
  margin-right: var(--space-sm);
}

:is(#memory-view, #kb-view) .library-body {
  display: flex;
  gap: var(--space-lg);
  flex: 1;
  min-height: 0;
}

:is(#memory-view, #kb-view) .library-list-col {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

:is(#memory-view, #kb-view) .library-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-sm);
  align-content: start;
  padding: 1px var(--space-xs) var(--space-md) 1px;
}

:is(#memory-view, #kb-view) .library-group-title {
  grid-column: 1 / -1;
  padding: var(--space-xs) var(--space-md) 2px;
  color: var(--text-tertiary);
  font-size: var(--fs-l5);
  user-select: none;
}

:is(#memory-view, #kb-view) .library-group-title:first-child {
  padding-top: 0;
}

:is(#memory-view, #kb-view) .library-item {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md) calc(var(--space-lg) + 32px) var(--space-md) var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--surface-secondary);
  cursor: pointer;
  transition: transform 160ms var(--ease-winui), background var(--transition-fast),
    border-color var(--transition-fast), box-shadow var(--transition-fast);
}

:is(#memory-view, #kb-view) .library-item:hover {
  border-color: transparent;
  background: var(--surface-hover);
  transform: translateY(-1px);
}

:is(#memory-view, #kb-view) .library-item.active {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 10%, transparent);
}

:is(#memory-view, #kb-view) .library-item:focus-visible,
:is(#memory-view, #kb-view) .library-filter-bar > button:focus-visible,
:is(#memory-view, #kb-view) .library-source-chip:focus-visible,
:is(#memory-view, #kb-view) .library-reader-tags button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

:is(#memory-view, #kb-view) .library-item-delete {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.86);
  transition: opacity var(--transition-fast), transform var(--transition-fast),
    color var(--transition-fast), background var(--transition-fast);
}

:is(#memory-view, #kb-view) .library-item:hover .library-item-delete,
:is(#memory-view, #kb-view) .library-item:focus-within .library-item-delete,
:is(#memory-view, #kb-view) .library-item.active .library-item-delete {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

:is(#memory-view, #kb-view) .library-item-delete:hover {
  background: var(--error-bg);
  color: var(--error);
}

:is(#memory-view, #kb-view) .library-origin-badge {
  min-height: 18px;
  display: inline-flex;
  align-items: center;
  padding: 1px 7px;
  border: 0;
  border-radius: var(--radius-sm);
  font-size: 10px;
  line-height: 16px;
}

:is(#memory-view, #kb-view) .library-origin-auto {
  background: var(--success-bg);
  color: var(--success);
}

:is(#memory-view, #kb-view) .library-origin-conversation,
:is(#memory-view, #kb-view) .library-origin-tool {
  background: var(--accent-subtle);
  color: var(--accent);
}

:is(#memory-view, #kb-view) .library-origin-manual {
  background: var(--surface-primary);
  color: var(--text-secondary);
}

:is(#memory-view, #kb-view) .library-no-match {
  grid-column: 1 / -1;
  padding: calc(var(--space-xl) * 1.5) var(--space-lg);
  color: var(--text-secondary);
  font-size: var(--fs-l4);
  text-align: center;
}

:is(#memory-view, #kb-view) .library-no-match .library-clear-filter {
  display: block;
  margin: var(--space-md) auto 0;
}

:is(#memory-view, #kb-view) .library-empty-state,
:is(#memory-view, #kb-view) .library-placeholder {
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl);
  color: var(--text-secondary);
  font-size: var(--fs-l4);
  text-align: center;
}

:is(#memory-view, #kb-view) .library-empty-state {
  min-height: 220px;
}

:is(#memory-view, #kb-view) .library-empty-state p,
:is(#memory-view, #kb-view) .library-placeholder p {
  margin: 0;
}

:is(#memory-view, #kb-view) .library-empty-icon {
  width: 52px;
  height: 52px;
  margin-bottom: var(--space-xs);
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
}

:is(#memory-view, #kb-view) .library-placeholder {
  flex: 1;
  min-width: 0;
}

:is(#memory-view, #kb-view) .library-placeholder h2 {
  margin: 0 0 var(--space-xs);
  color: var(--text-primary);
  font-size: var(--fs-l1);
  font-weight: 600;
}

:is(#memory-view, #kb-view) .library-placeholder p {
  max-width: 420px;
  line-height: 1.6;
}

:is(#memory-view, #kb-view) .library-reader,
:is(#memory-view, #kb-view) .library-editor {
  flex: 1;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  gap: var(--space-md);
  overflow-y: auto;
  overscroll-behavior: contain;
}

:is(#memory-view, #kb-view) .library-reader-bar,
:is(#memory-view, #kb-view) .library-editor-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-shrink: 0;
}

:is(#memory-view, #kb-view) .library-reader-eyebrow,
:is(#memory-view, #kb-view) .library-editor-hint {
  color: var(--text-tertiary);
  font-size: var(--fs-l5);
}

:is(#memory-view, #kb-view) .library-reader-title {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--fs-l1);
  font-weight: 600;
  line-height: 1.4;
  word-break: break-word;
}

:is(#memory-view, #kb-view) .library-reader-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  flex-shrink: 0;
}

:is(#memory-view, #kb-view) .library-reader-content {
  flex-shrink: 0;
  min-height: 112px;
  padding: var(--space-lg);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  background: var(--surface-secondary);
  color: var(--text-primary);
}

:is(#memory-view, #kb-view) .library-reader-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  flex-shrink: 0;
  padding-bottom: var(--space-md);
  color: var(--text-tertiary);
  font-size: var(--fs-l5);
}

:is(#memory-view, #kb-view) .library-source-chip {
  max-width: 320px;
  overflow: hidden;
  padding: 2px 10px;
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: var(--fs-l5);
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--transition-fast), transform 120ms var(--ease-winui);
}

:is(#memory-view, #kb-view) .library-source-chip:hover {
  background: var(--accent-border);
}

:is(#memory-view, #kb-view) .library-source-chip:active {
  transform: scale(0.97);
}

:is(#memory-view, #kb-view) .library-source-chip:disabled,
:is(#memory-view, #kb-view) .library-source-chip.disabled {
  border-color: var(--rule);
  background: var(--surface-secondary);
  color: var(--text-tertiary);
  cursor: default;
  transform: none;
}

:is(#memory-view, #kb-view).library-view-entering .library-view-inner {
  animation: library-view-in 260ms var(--ease-winui) both;
}

:is(#memory-view, #kb-view) .library-item.library-item-enter {
  animation: library-item-in 220ms var(--ease-winui) backwards;
  animation-delay: min(calc(var(--library-index, 0) * 18ms), 180ms);
}

:is(#memory-view, #kb-view) .library-detail-enter {
  animation: library-detail-in 220ms var(--ease-winui) both;
}

@keyframes library-view-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes library-item-in {
  from { opacity: 0; transform: translateY(5px) scale(0.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes library-detail-in {
  from { opacity: 0; transform: translateX(7px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (hover: none) {
  :is(#memory-view, #kb-view) .library-item-delete {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1);
  }
}

/* Electron 最小窗口仍有 900px；侧栏展开后主区不足 600px，所以资料库的
   响应式断点必须早于全局移动端抽屉断点。 */
@media (max-width: 980px) {
  :is(#memory-view, #kb-view).library-view {
    padding: var(--space-md);
  }

  :is(#memory-view, #kb-view) .library-header {
    flex-wrap: wrap;
  }

  :is(#memory-view, #kb-view) .library-search-box {
    flex: 1 1 100%;
    order: -1;
  }

  :is(#memory-view, #kb-view) .library-header-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  :is(#memory-view, #kb-view) .library-toggle-control {
    margin-left: auto;
  }
}

@media (max-width: 768px) {
  :is(#memory-view, #kb-view) .library-toolbar {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-sm);
  }

  :is(#memory-view, #kb-view) .library-toolbar-meta {
    width: 100%;
  }

  :is(#memory-view, #kb-view) .library-body {
    flex-direction: column;
  }

  :is(#memory-view, #kb-view) .library-list-col {
    flex: none;
    max-height: 40vh;
  }

  :is(#memory-view, #kb-view) .library-list {
    grid-template-columns: 1fr;
  }

  :is(#memory-view, #kb-view) .library-reader,
  :is(#memory-view, #kb-view) .library-editor,
  :is(#memory-view, #kb-view) .library-placeholder {
    flex: 1;
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  :is(#memory-view, #kb-view).library-view-entering .library-view-inner,
  :is(#memory-view, #kb-view) .library-item.library-item-enter,
  :is(#memory-view, #kb-view) .library-detail-enter {
    animation: none !important;
  }

  :is(#memory-view, #kb-view) .library-item,
  :is(#memory-view, #kb-view) .library-filter-bar > button,
  :is(#memory-view, #kb-view) .library-source-chip,
  :is(#memory-view, #kb-view) .library-item-delete {
    transition-duration: 0.01ms !important;
  }
}

/* Knowledge-specific content mapped onto the shared shell. */
#kb-view #kb-body.empty #kb-placeholder {
  display: flex !important;
}

#kb-view #kb-body.empty #kb-reader,
#kb-view #kb-body.empty #kb-editor {
  display: none !important;
}

#kb-view .kb-header-actions #btn-kb-harvest {
  max-width: 132px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#kb-view .kb-item-title {
  padding-right: var(--space-xl);
}

#kb-view .kb-item-meta {
  margin-top: auto;
  gap: 5px;
}

#kb-view .kb-item-time {
  margin-left: auto;
  color: var(--text-tertiary);
  font-size: 10px;
  white-space: nowrap;
}

#kb-view .kb-item-badge,
#kb-view .kb-item-draft {
  min-height: 18px;
  display: inline-flex;
  align-items: center;
  padding: 1px 7px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  line-height: 16px;
}

#kb-view .kb-item-badge-manual {
  background: var(--surface-primary);
  color: var(--text-secondary);
}

#kb-view .kb-item-draft {
  background: color-mix(in srgb, var(--warning, #f59e0b) 14%, var(--surface-primary));
  color: color-mix(in srgb, var(--warning, #f59e0b) 78%, var(--text-primary));
}

#kb-view .kb-reader-tag {
  min-height: 24px;
  padding: 2px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: var(--fs-l5);
  cursor: pointer;
  transition: transform 120ms var(--ease-winui), background var(--transition-fast),
    border-color var(--transition-fast);
}

#kb-view .kb-reader-tag:hover {
  border-color: var(--accent-border);
  background: var(--accent-border);
}

#kb-view .kb-reader-tag:active {
  transform: scale(0.96);
}

#kb-view .kb-editor-hint.is-dirty {
  color: color-mix(in srgb, var(--warning, #f59e0b) 78%, var(--text-primary));
}

#kb-view #kb-title-input:focus,
#kb-view #kb-content-input:focus,
#kb-view #kb-tag-editor:focus-within {
  border-color: var(--accent);
  background: var(--surface-primary);
  box-shadow: 0 0 0 1px var(--accent-border);
}

#kb-view #btn-kb-placeholder-new {
  margin-top: var(--space-md);
}