/* ===================================================================
 * docrag-shared.css — DocRAG 应用共享样式
 * 
 * 统一 DocRAG 7 个页面的设计语言
 * 基于 Monet 印象派设计系统，支持深色/浅色双主题
 * =================================================================== */

/* ===== 0. 设计 Token 导入 ===== */
@import url('./design-tokens.css');

/* ===== 1. 共享变量 ===== */
:root {
  /* DocRAG 专用颜色 */
  --docrag-primary: #3498db;
  --docrag-primary-hover: #2980b9;
  --docrag-success: #2ecc71;
  --docrag-success-hover: #27ae60;
  --docrag-danger: #e74c3c;
  --docrag-danger-hover: #c0392b;
  --docrag-warning: #f39c12;
  --docrag-info: #9b59b6;
  
  /* DocRAG 语义变量 */
  --docrag-bg: var(--color-bg-page);
  --docrag-bg-secondary: var(--color-bg-card);
  --docrag-text: var(--color-text-primary);
  --docrag-text-secondary: var(--color-text-secondary);
  --docrag-text-muted: var(--color-text-muted);
  --docrag-border: var(--color-border);
  --docrag-border-hover: var(--color-border-hover);
  
  /* 字体 */
  --docrag-font-body: var(--font-body);
  --docrag-font-mono: var(--font-mono);
  
  /* 间距 */
  --docrag-space-xs: var(--space-1);
  --docrag-space-sm: var(--space-2);
  --docrag-space-md: var(--space-4);
  --docrag-space-lg: var(--space-6);
  --docrag-space-xl: var(--space-8);
  
  /* 圆角 */
  --docrag-radius-sm: var(--radius-sm);
  --docrag-radius-md: var(--radius-md);
  --docrag-radius-lg: var(--radius-lg);
  
  /* 阴影 */
  --docrag-shadow: var(--shadow-md);
  --docrag-shadow-hover: var(--shadow-lg);
}

/* ===== 2. 浅色主题覆盖 ===== */
body.light,
[data-theme="light"] {
  --docrag-bg: var(--color-bg-page-light);
  --docrag-bg-secondary: var(--color-bg-card-light);
  --docrag-text: var(--color-text-primary-light);
  --docrag-text-secondary: var(--color-text-secondary-light);
  --docrag-text-muted: var(--color-text-muted-light);
  --docrag-border: var(--color-border-light);
  --docrag-border-hover: var(--color-border-hover-light);
}

/* ===== 3. 基础重置 ===== */
.docrag-page * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.docrag-page {
  font-family: var(--docrag-font-body);
  background: var(--docrag-bg);
  color: var(--docrag-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--duration-normal) var(--ease-out-quart),
              color var(--duration-normal) var(--ease-out-quart);
}

/* ===== 4. 容器 ===== */
.docrag-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--docrag-space-lg) var(--docrag-space-md);
}

.docrag-container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--docrag-space-lg) var(--docrag-space-md);
}

/* ===== 5. 品牌区块 ===== */
.docrag-brand {
  text-align: center;
  margin-bottom: var(--docrag-space-xl);
  padding: var(--docrag-space-lg) 0;
}

.docrag-brand-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--docrag-space-md);
  background: var(--docrag-bg-secondary);
  border-radius: var(--docrag-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--docrag-border);
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.docrag-brand-icon:hover {
  transform: scale(1.05);
  box-shadow: var(--docrag-shadow-hover);
}

.docrag-brand-icon svg {
  width: 40px;
  height: 40px;
  color: var(--docrag-primary);
}

.docrag-brand h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--docrag-text);
  margin-bottom: var(--docrag-space-sm);
  letter-spacing: -0.02em;
}

.docrag-brand .docrag-description {
  font-size: 1.1rem;
  color: var(--docrag-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--docrag-space-md);
  line-height: 1.7;
}

/* ===== 6. 快捷操作 ===== */
.docrag-quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--docrag-space-md);
  margin-bottom: var(--docrag-space-xl);
}

.docrag-action-card {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.docrag-action-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--docrag-shadow-hover);
  border-color: var(--docrag-primary);
}

.docrag-action-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-action-card h3 svg {
  width: 24px;
  height: 24px;
  color: var(--docrag-primary);
}

.docrag-action-card p {
  color: var(--docrag-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.docrag-action-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--docrag-space-sm);
  background: linear-gradient(135deg, var(--monet-pond), var(--monet-willow));
  border-radius: var(--docrag-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.docrag-action-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

/* ===== 7. 功能特性 ===== */
.docrag-features {
  margin-bottom: var(--docrag-space-xl);
}

.docrag-features h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-lg);
  color: var(--docrag-text);
  text-align: center;
}

.docrag-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--docrag-space-md);
}

.docrag-feature {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.docrag-feature:hover {
  transform: translateY(-2px);
  box-shadow: var(--docrag-shadow);
}

.docrag-feature h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-feature h3 svg {
  width: 20px;
  height: 20px;
  color: var(--docrag-primary);
}

.docrag-feature p {
  color: var(--docrag-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.docrag-feature-header {
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
  margin-bottom: var(--docrag-space-sm);
}

.docrag-feature-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--monet-pond), var(--monet-willow));
  border-radius: var(--docrag-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.docrag-feature-icon svg {
  width: 18px;
  height: 18px;
  color: #fff;
}

/* ===== 8. 聊天界面 ===== */
.docrag-chat-container {
  display: flex;
  height: calc(100vh - 56px);
  overflow: hidden;
}

.docrag-history-panel {
  width: 320px;
  background: var(--docrag-bg-secondary);
  border-right: 1px solid var(--docrag-border);
  display: flex;
  flex-direction: column;
  transition: transform var(--duration-normal) var(--ease-out-quart);
}

.docrag-history-panel.hidden {
  transform: translateX(-100%);
}

.docrag-history-header {
  padding: var(--docrag-space-md);
  border-bottom: 1px solid var(--docrag-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.docrag-history-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--docrag-space-sm);
}

.docrag-history-item {
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  border-radius: var(--docrag-radius-md);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out-quart);
  margin-bottom: var(--docrag-space-xs);
}

.docrag-history-item:hover {
  background: var(--color-bg-card-hover);
}

.docrag-history-item.active {
  background: var(--docrag-primary);
  color: white;
}

.docrag-chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.docrag-context-bar {
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: var(--docrag-bg-secondary);
  border-bottom: 1px solid var(--docrag-border);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
  font-size: 0.9rem;
  color: var(--docrag-text-secondary);
}

.docrag-chat-box {
  flex: 1;
  overflow-y: auto;
  padding: var(--docrag-space-md);
}

.docrag-message {
  margin-bottom: var(--docrag-space-md);
  max-width: 80%;
}

.docrag-message.user {
  margin-left: auto;
}

.docrag-message.assistant {
  margin-right: auto;
}

.docrag-message-bubble {
  padding: var(--docrag-space-md);
  border-radius: var(--docrag-radius-lg);
  line-height: 1.6;
}

.docrag-message.user .docrag-message-bubble {
  background: var(--docrag-primary);
  color: white;
  border-bottom-right-radius: var(--docrag-radius-sm);
}

.docrag-message.assistant .docrag-message-bubble {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-bottom-left-radius: var(--docrag-radius-sm);
}

.docrag-input-container {
  padding: var(--docrag-space-md);
  background: var(--docrag-bg-secondary);
  border-top: 1px solid var(--docrag-border);
}

.docrag-input-wrapper {
  display: flex;
  gap: var(--docrag-space-sm);
  align-items: flex-end;
}

.docrag-input {
  flex: 1;
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: var(--docrag-bg);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-md);
  color: var(--docrag-text);
  font-family: var(--docrag-font-body);
  font-size: 1rem;
  resize: vertical;
  min-height: 44px;
  max-height: 200px;
  transition: border-color var(--duration-fast) var(--ease-out-quart);
}

.docrag-input:focus {
  outline: none;
  border-color: var(--docrag-primary);
}

.docrag-send-btn {
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: var(--docrag-primary);
  color: white;
  border: none;
  border-radius: var(--docrag-radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
}

.docrag-send-btn:hover {
  background: var(--docrag-primary-hover);
}

.docrag-send-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ===== 9. 文档卡片 ===== */
.docrag-document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--docrag-space-md);
}

.docrag-document-card {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
  cursor: pointer;
}

.docrag-document-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--docrag-shadow);
  border-color: var(--docrag-primary);
}

.docrag-document-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-document-card h3 svg {
  width: 20px;
  height: 20px;
  color: var(--docrag-primary);
}

.docrag-document-card .docrag-doc-preview {
  color: var(--docrag-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--docrag-space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.docrag-document-card .docrag-doc-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--docrag-text-muted);
}

.docrag-document-card .docrag-doc-actions {
  display: flex;
  gap: var(--docrag-space-sm);
  margin-top: var(--docrag-space-md);
}

.docrag-doc-action-btn {
  padding: var(--docrag-space-xs) var(--docrag-space-sm);
  background: var(--docrag-bg);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-sm);
  color: var(--docrag-text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-xs);
}

.docrag-doc-action-btn:hover {
  background: var(--docrag-primary);
  color: white;
  border-color: var(--docrag-primary);
}

/* ===== 10. 文件夹卡片 ===== */
.docrag-folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--docrag-space-md);
}

.docrag-folder-card {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
  cursor: pointer;
}

.docrag-folder-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--docrag-shadow);
  border-color: var(--docrag-warning);
}

.docrag-folder-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-folder-card h3 svg {
  width: 20px;
  height: 20px;
  color: var(--docrag-warning);
}

.docrag-folder-card .docrag-folder-count {
  font-size: 0.9rem;
  color: var(--docrag-text-muted);
}

/* ===== 11. 标签卡片 ===== */
.docrag-tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--docrag-space-md);
}

.docrag-tag-card {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
  cursor: pointer;
}

.docrag-tag-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--docrag-shadow);
  border-color: var(--docrag-info);
}

.docrag-tag-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-tag-card .docrag-tag-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--docrag-info);
}

.docrag-tag-card .docrag-tag-count {
  font-size: 0.9rem;
  color: var(--docrag-text-muted);
}

/* ===== 12. 技术栈 ===== */
.docrag-tech-stack {
  margin-bottom: var(--docrag-space-xl);
  text-align: center;
}

.docrag-tech-stack h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-lg);
  color: var(--docrag-text);
}

.docrag-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--docrag-space-sm);
}

.docrag-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--docrag-text-secondary);
  transition: all var(--duration-fast) var(--ease-out-quart);
}

.docrag-tag:hover {
  background: var(--docrag-primary);
  color: white;
  border-color: var(--docrag-primary);
  transform: translateY(-2px);
}

/* ===== 13. 按钮 ===== */
.docrag-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--docrag-space-sm);
  padding: 10px 20px;
  background: var(--docrag-primary);
  color: white;
  border: none;
  border-radius: var(--docrag-radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
  text-decoration: none;
}

.docrag-btn:hover {
  background: var(--docrag-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--docrag-shadow);
}

.docrag-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.docrag-btn-secondary {
  background: var(--docrag-bg-secondary);
  color: var(--docrag-text);
  border: 1px solid var(--docrag-border);
}

.docrag-btn-secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--docrag-primary);
}

.docrag-btn-danger {
  background: var(--docrag-danger);
}

.docrag-btn-danger:hover {
  background: var(--docrag-danger-hover);
}

.docrag-btn-success {
  background: var(--docrag-success);
}

.docrag-btn-success:hover {
  background: var(--docrag-success-hover);
}

/* ===== 14. 表单 ===== */
.docrag-form-group {
  margin-bottom: var(--docrag-space-md);
}

.docrag-label {
  display: block;
  margin-bottom: var(--docrag-space-xs);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--docrag-text);
}

.docrag-input-field {
  width: 100%;
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: var(--docrag-bg);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-md);
  color: var(--docrag-text);
  font-family: var(--docrag-font-body);
  font-size: 1rem;
  transition: border-color var(--duration-fast) var(--ease-out-quart);
}

.docrag-input-field:focus {
  outline: none;
  border-color: var(--docrag-primary);
}

.docrag-textarea {
  min-height: 100px;
  resize: vertical;
}

/* ===== 15. 模态框 ===== */
.docrag-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.docrag-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.docrag-modal {
  background: var(--docrag-bg-secondary);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-lg);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--duration-normal) var(--ease-out-quart);
}

.docrag-modal-overlay.active .docrag-modal {
  transform: scale(1);
}

.docrag-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--docrag-space-md);
}

.docrag-modal-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--docrag-text);
}

.docrag-modal-close {
  background: none;
  border: none;
  color: var(--docrag-text-muted);
  cursor: pointer;
  padding: var(--docrag-space-xs);
  border-radius: var(--docrag-radius-sm);
  transition: all var(--duration-fast) var(--ease-out-quart);
}

.docrag-modal-close:hover {
  background: var(--color-bg-card-hover);
  color: var(--docrag-text);
}

.docrag-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--docrag-space-sm);
  margin-top: var(--docrag-space-lg);
}

/* ===== 16. 标签页 ===== */
.docrag-tabs {
  display: flex;
  border-bottom: 1px solid var(--docrag-border);
  margin-bottom: var(--docrag-space-lg);
}

.docrag-tab {
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--docrag-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
}

.docrag-tab:hover {
  color: var(--docrag-text);
}

.docrag-tab.active {
  color: var(--docrag-primary);
  border-bottom-color: var(--docrag-primary);
}

/* ===== 17. 搜索框 ===== */
.docrag-search-input {
  width: 100%;
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  padding-left: 40px;
  background: var(--docrag-bg);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-md);
  color: var(--docrag-text);
  font-family: var(--docrag-font-body);
  font-size: 1rem;
  transition: border-color var(--duration-fast) var(--ease-out-quart);
}

.docrag-search-input:focus {
  outline: none;
  border-color: var(--docrag-primary);
}

.docrag-search-wrapper {
  position: relative;
  margin-bottom: var(--docrag-space-md);
}

.docrag-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--docrag-text-muted);
  width: 20px;
  height: 20px;
}

/* ===== 18. Toast 提示 ===== */
.docrag-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: var(--docrag-space-md) var(--docrag-space-lg);
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-md);
  box-shadow: var(--docrag-shadow);
  z-index: 1001;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.docrag-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.docrag-toast.success {
  border-color: var(--docrag-success);
}

.docrag-toast.error {
  border-color: var(--docrag-danger);
}

.docrag-toast.warning {
  border-color: var(--docrag-warning);
}

/* ===== 19. 加载状态 ===== */
.docrag-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--docrag-border);
  border-top-color: var(--docrag-primary);
  border-radius: 50%;
  animation: docrag-spin 1s linear infinite;
}

@keyframes docrag-spin {
  to {
    transform: rotate(360deg);
  }
}

.docrag-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--docrag-space-md);
  padding: var(--docrag-space-xl);
  color: var(--docrag-text-muted);
}

/* ===== 20. 错误状态 ===== */
.docrag-error {
  text-align: center;
  padding: var(--docrag-space-xl);
  color: var(--docrag-danger);
}

.docrag-error svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--docrag-space-md);
}

.docrag-error h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
}

.docrag-error p {
  color: var(--docrag-text-secondary);
  margin-bottom: var(--docrag-space-md);
}

/* ===== 21. 动画类 ===== */
.docrag-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out-quart),
              transform var(--duration-slow) var(--ease-out-quart);
}

.docrag-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

.docrag-stagger {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out-quart),
              transform var(--duration-slow) var(--ease-out-quart);
}

.docrag-stagger.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 22. 响应式设计 ===== */
@media (max-width: 1024px) {
  .docrag-container {
    padding: var(--docrag-space-lg) var(--docrag-space-md);
  }
  
  .docrag-quick-actions {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .docrag-document-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .docrag-chat-container {
    flex-direction: column;
  }
  
  .docrag-history-panel {
    width: 100%;
    height: auto;
    max-height: 300px;
    border-right: none;
    border-bottom: 1px solid var(--docrag-border);
  }
  
  .docrag-history-panel.hidden {
    transform: translateY(-100%);
  }
  
  .docrag-features-grid {
    grid-template-columns: 1fr;
  }
  
  .docrag-document-grid {
    grid-template-columns: 1fr;
  }
  
  .docrag-folder-grid {
    grid-template-columns: 1fr;
  }
  
  .docrag-tag-grid {
    grid-template-columns: 1fr;
  }
  
  /* Touch 优化：确保触控目标至少 44px */
  .docrag-action-card,
  .docrag-btn,
  .docrag-btn-primary,
  .docrag-btn-secondary,
  .docrag-back-link,
  .docrag-tag,
  .docrag-tab,
  .docrag-upload-zone {
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .docrag-action-card {
    padding: var(--docrag-space-md);
  }
  
  .docrag-btn,
  .docrag-btn-primary,
  .docrag-btn-secondary {
    padding: var(--docrag-space-sm) var(--docrag-space-lg);
  }
  
  .docrag-back-link {
    padding: var(--docrag-space-sm);
    margin-bottom: var(--docrag-space-md);
  }
  
  .docrag-tag {
    padding: var(--docrag-space-xs) var(--docrag-space-sm);
  }
  
  .docrag-tab {
    padding: var(--docrag-space-sm) var(--docrag-space-md);
  }
  
  .docrag-upload-zone {
    padding: var(--docrag-space-xl) var(--docrag-space-lg);
  }
}

@media (max-width: 480px) {
  .docrag-container {
    padding: var(--docrag-space-md) var(--docrag-space-sm);
  }
  
  .docrag-brand-icon {
    width: 64px;
    height: 64px;
  }
  
  .docrag-brand-icon svg {
    width: 32px;
    height: 32px;
  }
  
  .docrag-action-card {
    padding: var(--docrag-space-md);
  }
  
  .docrag-feature {
    padding: var(--docrag-space-md);
  }
  
  .docrag-document-card {
    padding: var(--docrag-space-md);
  }
}

/* ===== 23. 无障碍支持 ===== */
@media (prefers-reduced-motion: reduce) {
  .docrag-animate,
  .docrag-stagger {
    transition: none;
    opacity: 1;
    transform: none;
  }
  
  .docrag-action-card,
  .docrag-feature,
  .docrag-document-card,
  .docrag-folder-card,
  .docrag-tag-card,
  .docrag-btn,
  .docrag-tag {
    transition: none;
  }
  
  .docrag-action-card:hover,
  .docrag-feature:hover,
  .docrag-document-card:hover,
  .docrag-folder-card:hover,
  .docrag-tag-card:hover,
  .docrag-btn:hover,
  .docrag-tag:hover {
    transform: none;
  }
}

/* ===== 24. Parse 页面特定样式 ===== */
.docrag-upload-zone {
  border: 2px dashed var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  padding: var(--docrag-space-xl) var(--docrag-space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-quart);
  background: var(--docrag-bg-secondary);
  margin-bottom: var(--docrag-space-lg);
}

.docrag-upload-zone:hover,
.docrag-upload-zone.dragover {
  border-color: var(--docrag-primary);
  background: rgba(52, 152, 219, 0.08);
}

.docrag-upload-icon {
  font-size: 3rem;
  margin-bottom: var(--docrag-space-sm);
}

.docrag-upload-hint {
  font-size: 0.85rem;
  color: var(--docrag-text-muted);
  margin-top: var(--docrag-space-sm);
}

.docrag-progress {
  display: none;
  margin: var(--docrag-space-md) 0;
}

.docrag-progress.visible {
  display: block;
}

.docrag-progress-bar {
  height: 4px;
  background: var(--docrag-border);
  border-radius: 2px;
  overflow: hidden;
}

.docrag-progress-bar div {
  height: 100%;
  background: linear-gradient(90deg, var(--docrag-primary), var(--docrag-success));
  transition: width var(--duration-normal) var(--ease-out-quart);
}

.docrag-progress-text {
  font-size: 0.85rem;
  color: var(--docrag-text-muted);
  margin-top: var(--docrag-space-xs);
}

.docrag-result-area {
  background: var(--docrag-bg-secondary);
  border-radius: var(--docrag-radius-lg);
  border: 1px solid var(--docrag-border);
  padding: var(--docrag-space-lg);
  margin-top: var(--docrag-space-md);
  display: none;
}

.docrag-result-area.visible {
  display: block;
}

.docrag-result-meta {
  display: flex;
  gap: var(--docrag-space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--docrag-space-md);
  font-size: 0.9rem;
  color: var(--docrag-text-muted);
}

.docrag-result-meta span {
  background: rgba(52, 152, 219, 0.12);
  padding: var(--docrag-space-xs) var(--docrag-space-sm);
  border-radius: var(--docrag-radius-sm);
}

.docrag-result-content {
  max-height: 500px;
  overflow-y: auto;
  background: var(--docrag-bg);
  border-radius: var(--docrag-radius-md);
  padding: var(--docrag-space-md);
  font-size: 0.9rem;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid var(--docrag-border);
}

.docrag-subtitle {
  text-align: center;
  color: var(--docrag-text-secondary);
  margin-bottom: var(--docrag-space-lg);
  font-style: italic;
}

/* ===== 25. 首页聊天区域 ===== */
.docrag-chat-section {
  max-width: 800px;
  margin: 0 auto var(--docrag-space-xl);
  padding: 0 var(--docrag-space-md);
}

.docrag-chat-section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--docrag-space-sm);
  color: var(--docrag-text);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
}

.docrag-chat-section h2 svg {
  width: 24px;
  height: 24px;
  color: var(--docrag-primary);
}

.docrag-chat-desc {
  color: var(--docrag-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--docrag-space-md);
}

.docrag-chat-section > .docrag-chat-box {
  background: var(--docrag-bg-secondary);
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 360px;
}

.docrag-chat-section .docrag-context-bar {
  padding: var(--docrag-space-sm) var(--docrag-space-md);
  background: var(--docrag-bg-secondary);
  border-bottom: 1px solid var(--docrag-border);
  display: flex;
  align-items: center;
  gap: var(--docrag-space-sm);
  font-size: 0.9rem;
  color: var(--docrag-text-secondary);
}

.docrag-chat-section .docrag-context-bar svg {
  width: 16px;
  height: 16px;
  color: var(--docrag-text-muted);
}

.docrag-clear-btn {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-sm);
  background: transparent;
  color: var(--docrag-text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.docrag-clear-btn:hover {
  background: var(--docrag-border);
  color: var(--docrag-text);
}

.docrag-chat-messages {
  flex: 1;
  padding: var(--docrag-space-md);
  overflow-y: auto;
  min-height: 200px;
}

.docrag-empty-chat-hint {
  text-align: center;
  color: var(--docrag-text-muted);
  padding: var(--docrag-space-xl) var(--docrag-space-md);
  font-size: 0.9rem;
  line-height: 1.7;
}

.docrag-empty-chat-hint small {
  display: block;
  margin-top: var(--docrag-space-sm);
  color: var(--docrag-text-subtle);
}

.docrag-chat-input-row {
  display: flex;
  gap: var(--docrag-space-sm);
  padding: var(--docrag-space-md);
  border-top: 1px solid var(--docrag-border);
  background: var(--docrag-bg);
}

.docrag-chat-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--docrag-border);
  border-radius: var(--docrag-radius-md);
  background: var(--docrag-bg-secondary);
  color: var(--docrag-text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.docrag-chat-input:focus {
  border-color: var(--docrag-primary);
}

.docrag-chat-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.docrag-chat-submit {
  padding: 10px 24px;
  border: none;
  border-radius: var(--docrag-radius-md);
  background: linear-gradient(135deg, var(--monet-pond), var(--monet-willow));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
}

.docrag-chat-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(123, 167, 166, 0.4);
}

.docrag-chat-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.docrag-api-status {
  text-align: center;
  padding: var(--docrag-space-sm) 0;
  font-size: 0.85rem;
  color: var(--docrag-text-muted);
}

/* ===== 26. 底部栏 ===== */
.docrag-footer {
  margin-top: auto;
  padding: var(--docrag-space-lg) 0 var(--docrag-space-md);
  border-top: 1px dashed var(--docrag-border);
  text-align: center;
}

.docrag-footer-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--docrag-space-md);
}

.docrag-footer-nav {
  font-size: 0.8rem;
  font-weight: 400;
}

.docrag-footer-nav a {
  color: var(--docrag-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.docrag-footer-nav a:hover {
  color: var(--docrag-primary);
}

.docrag-footer-sep {
  color: var(--docrag-text-muted);
  margin: 0 6px;
  font-size: 0.75rem;
}

.docrag-footer-divider {
  width: 100%;
  height: 0;
  border-top: 1px dashed var(--docrag-border);
  position: relative;
  margin: var(--docrag-space-sm) 0;
}

.docrag-footer-divider::after {
  content: '';
  position: absolute;
  top: -2.5px;
  left: 50%;
  width: 5px;
  height: 5px;
  background: var(--docrag-border);
  border-radius: 50%;
  transform: translateX(-50%);
}

.docrag-footer-legal {
  font-size: 0.67rem;
  font-weight: 300;
  color: var(--docrag-text-muted);
  line-height: 1.9;
}

.docrag-footer-legal a {
  color: var(--docrag-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.docrag-footer-legal a:hover {
  color: var(--docrag-primary);
}

.docrag-footer-legal img {
  display: inline !important;
}

/* ===== 27. 打印样式 ===== */
@media print {
  .docrag-page {
    background: white;
    color: black;
  }
  
  .docrag-history-panel,
  .docrag-input-container,
  .docrag-btn,
  .docrag-tabs {
    display: none;
  }
  
  .docrag-document-card,
  .docrag-folder-card,
  .docrag-tag-card {
    break-inside: avoid;
    border: 1px solid #ccc;
  }
}