/* ==================== 全局重置与变量 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* 禁用Android蓝色点击热区提示，使用自定义样式 */
  -webkit-tap-highlight-color: transparent;
}

/* 全局文字选中样式 - RAI主题色 */
::selection {
  background: var(--color-saturn-yellow);
  color: var(--bg-primary);
  /* 圆角效果：通过box-decoration-break实现多行选中文字的圆角 */
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  border-radius: 4px;
}

::-moz-selection {
  background: var(--color-saturn-yellow);
  color: var(--bg-primary);
}

:root {
  --bg-primary: #0D0D0D;
  --bg-secondary: #1A1A1A;
  --bg-tertiary: #2A2A2A;
  --bg-hover: #353535;
  --text-primary: #ECECEC;
  --text-secondary: #ACACAC;
  --text-tertiary: #6E6E6E;
  --border-color: #2A2A2A;
  --border-dark: #404040;
  --accent-color: #FFFFFF;
  --accent-hover: #E0E0E0;
  --input-bg: #202020;
  --error-color: #EF4444;
  --warning-color: #F59E0B;
  --success-color: #2aa97f;
  --thinking-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  /* Thinking UI Colors */
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray: #808080;
  --color-saturn-yellow: #FFC107;
  --sidebar-width: 280px;
  --header-height: 60px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 20px;
  --spacing-xl: 28px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --z-modal: 1000;
  --z-overlay: 999;
  --z-sidebar: 100;
  --z-header: 90;
}

/* 浅色主题 */
[data-theme="light"] {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F5;
  --bg-tertiary: #E5E5E5;
  --bg-hover: #D4D4D4;
  --text-primary: #1A1A1A;
  --text-secondary: #525252;
  --text-tertiary: #A3A3A3;
  --border-color: #E5E5E5;
  --border-dark: #D4D4D4;
  --accent-color: #000000;
  --accent-hover: #404040;
  --input-bg: #F5F5F5;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
}

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  position: fixed;
  /* 防止iOS橡皮筋效果 */
  transition: background-color 0.3s, color 0.3s;
}



.material-symbols-outlined {
  display: inline-block;
  vertical-align: middle;
  fill: currentColor;
  width: 1em;
  height: 1em;
  /* font-variation-settings removed */
}

.hidden {
  display: none !important;
}

/* ==================== 布局容器 ==================== */
.app-container {
  display: flex;
  width: 100%;
  height: 100%;
  background-color: transparent;
  /* 改为透明 */
  position: relative;
  overflow: hidden;
  z-index: 1;
  /* 确保在canvas之上 */
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: var(--z-sidebar);
}

/* 固定顶部区域 */
.sidebar-header-fixed {
  padding: var(--spacing-lg);
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-color);
}

/* PC侧边栏顶栏控制按钮 */
.sidebar-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.sidebar-header-controls {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.sidebar-control-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.sidebar-control-btn:hover {
  background: var(--bg-hover);
}

.sidebar-lang-text {
  font-size: 14px;
  font-weight: 600;
  min-width: 18px;
  text-align: center;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background: var(--bg-tertiary);
  border-radius: 50% 10px 10px 10px;
  padding: 3px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-text-col {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-subtitle {
  font-size: 10px;
  color: var(--text-tertiary);
  margin-top: 2px;
  font-weight: 400;
}

.new-chat-btn {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.new-chat-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  margin-bottom: var(--spacing-md);
}

.search-box:focus-within {
  border-color: var(--border-dark);
}

.search-box .material-symbols-outlined {
  font-size: 20px;
  color: var(--text-tertiary);
}

.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-tertiary);
}

/* 可滚动中间区域 */
.sidebar-scrollable {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.sidebar-scrollable::-webkit-scrollbar {
  width: 5px;
}

.sidebar-scrollable::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-scrollable::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

/* 侧边栏滚动区域边缘羽化效果 */
.sidebar-scrollable-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-scrollable-wrapper .sidebar-scrollable {
  flex: 1;
}

/* 侧边栏顶部羽化 - 颜色渐变层 */
.sidebar-scrollable-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40px;
  /* 侧边栏顶部渐变高度 */
  background: linear-gradient(to bottom,
      var(--bg-secondary) 0%,
      rgba(26, 26, 26, 0.7) 40%,
      transparent 100%);
  pointer-events: none;
  z-index: 5;
}

/* 侧边栏底部羽化 - 颜色渐变层 */
.sidebar-scrollable-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  /* 侧边栏底部渐变高度 */
  background: linear-gradient(to top,
      var(--bg-secondary) 0%,
      rgba(26, 26, 26, 0.7) 40%,
      transparent 100%);
  pointer-events: none;
  z-index: 5;
}

/* 浅色主题侧边栏羽化 */
[data-theme="light"] .sidebar-scrollable-wrapper::before {
  background: linear-gradient(to bottom,
      var(--bg-secondary) 0%,
      rgba(245, 245, 245, 0.7) 40%,
      transparent 100%);
}

[data-theme="light"] .sidebar-scrollable-wrapper::after {
  background: linear-gradient(to top,
      var(--bg-secondary) 0%,
      rgba(245, 245, 245, 0.7) 40%,
      transparent 100%);
}

/* 侧边栏边缘模糊层 */
.sidebar-edge-blur-top,
.sidebar-edge-blur-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 30px;
  /* 侧边栏模糊层高度 */
  pointer-events: none;
  z-index: 6;
  backdrop-filter: blur(15px);
  /* 模糊强度增加5倍 */
  -webkit-backdrop-filter: blur(15px);
}

.sidebar-edge-blur-top {
  top: 0;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
}

.sidebar-edge-blur-bottom {
  bottom: 0;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
}

/* 分组样式 */
.sidebar-group {
  margin-bottom: var(--spacing-lg);
}

.sidebar-group-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
  user-select: none;
}

.sidebar-group-header:hover {
  background: var(--bg-tertiary);
}

.sidebar-group-header .material-symbols-outlined {
  font-size: 20px;
  color: var(--text-primary);
}

.sidebar-group-title {
  flex: 1;
}

.group-toggle-icon {
  font-size: 20px;
  transition: transform 0.3s;
  color: var(--text-secondary);
}

.group-toggle-icon.collapsed {
  transform: rotate(180deg);
}

.sidebar-group-content {
  padding-left: var(--spacing-md);
  margin-top: var(--spacing-sm);
  max-height: 99999px;
  overflow: visible;
  transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
  opacity: 1;
}

.sidebar-group-content.collapsed {
  max-height: 0;
  opacity: 0;
}

/* 内联新建空间按钮 */
.new-space-btn-inline {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px dashed var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.new-space-btn-inline:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-color);
  color: var(--text-primary);
}

.new-space-btn-inline .material-symbols-outlined {
  font-size: 16px;
}

/* ==================== Chat Flow 思维流样式 ==================== */

/* 新建思维流按钮 - 与新建空间按钮保持一致 */
.new-flow-btn-inline {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px dashed var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.new-flow-btn-inline:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-saturn-yellow);
  color: var(--text-primary);
}

.new-flow-btn-inline .material-symbols-outlined {
  font-size: 16px;
}

/* 思维流列表 */
.flows-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.flow-item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 13px;
}

.flow-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.flow-item.active {
  background: var(--bg-hover);
  color: var(--color-saturn-yellow);
}

.flow-item-icon {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.flow-item-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flow-item-delete {
  opacity: 0;
  background: none;
  border: none;
  padding: 2px;
  cursor: pointer;
  color: var(--text-tertiary);
  transition: opacity 0.2s, color 0.2s;
}

.flow-item:hover .flow-item-delete {
  opacity: 1;
}

.flow-item-delete:hover {
  color: var(--color-error);
}

/* Chat Flow 工作区布局 */
.chatflow-workspace {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  background: var(--bg-primary);
  z-index: 1000;
}

.chatflow-back-btn {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.chatflow-back-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--color-saturn-yellow);
}

.chatflow-back-btn svg {
  width: 18px;
  height: 18px;
}

/* 左侧 LLM 面板 */
.chatflow-llm-panel {
  width: 30%;
  min-width: 320px;
  max-width: 50%;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
}

.chatflow-header {
  padding: 60px 20px 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.chatflow-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.chatflow-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

/* Chat Flow iframe 样式 */
.chatflow-iframe {
  width: 100%;
  flex: 1;
  border: none;
  background: var(--bg-primary);
}

.chatflow-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  text-align: center;
  gap: 12px;
}

.chatflow-empty-state svg {
  opacity: 0.3;
}

.chatflow-empty-state p {
  margin: 0;
  font-size: 14px;
}

.chatflow-input-area {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}


.chatflow-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
}

.chatflow-input::placeholder {
  color: var(--text-tertiary);
}

.chatflow-send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-saturn-yellow);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, opacity 0.2s;
  flex-shrink: 0;
}

.chatflow-send-btn:hover {
  transform: scale(1.1);
}

.chatflow-send-btn svg {
  color: #000;
}

/* 可拖拽分隔栏 */
.chatflow-divider {
  width: 6px;
  cursor: col-resize;
  background: transparent;
  transition: background 0.2s;
  position: relative;
}

.chatflow-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2px;
  height: 40px;
  background: var(--border-color);
  border-radius: 1px;
  transition: background 0.2s, height 0.2s;
}

.chatflow-divider:hover::after {
  background: var(--color-saturn-yellow);
  height: 60px;
}

/* 无限画布区域 */
.chatflow-canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}

.infinite-canvas {
  width: 100%;
  height: 100%;
  cursor: grab;
  user-select: none;
}

.infinite-canvas:active {
  cursor: grabbing;
}

.canvas-bg {
  pointer-events: all;
}

/* 画布提示 */
.canvas-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-tertiary);
  pointer-events: none;
  opacity: 0.5;
}

.canvas-hint svg {
  opacity: 0.3;
}

.canvas-hint span {
  font-size: 14px;
}

/* 缩放控制 */
.canvas-zoom-controls {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 4px 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.canvas-zoom-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}

.canvas-zoom-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.canvas-zoom-level {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 40px;
  text-align: center;
  user-select: none;
}

/* ==================== Chat Flow 增强输入框样式 ==================== */

.chatflow-input-wrapper {
  width: 100%;
}

.chatflow-input-container {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 12px 16px;
  transition: border-color 0.2s;
}

.chatflow-input-container:focus-within {
  border-color: var(--color-saturn-yellow);
}

.chatflow-input-row {
  width: 100%;
}

.chatflow-message-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  max-height: 150px;
  min-height: 24px;
}

.chatflow-message-input::placeholder {
  color: var(--text-tertiary);
}

.chatflow-input-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
}

.chatflow-toolbar-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}

.chatflow-toolbar-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.chatflow-toolbar-spacer {
  flex: 1;
}

.chatflow-more-menu-container {
  position: relative;
}

.chatflow-more-menu {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 0;
  min-width: 180px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.chatflow-more-menu.active {
  display: block;
}

.chatflow-model-selector {
  position: relative;
}

.chatflow-model-select {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: var(--bg-hover);
  border-radius: 20px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}

.chatflow-model-select:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.chatflow-model-menu {
  display: none;
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 0;
  min-width: 160px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.chatflow-model-menu.active {
  display: block;
}

.chatflow-model-menu .model-menu-item {
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 13px;
  color: var(--text-secondary);
}

.chatflow-model-menu .model-menu-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.chatflow-stop-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-error);
  border: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: transform 0.2s;
}

.chatflow-stop-btn:hover {
  transform: scale(1.1);
}

/* ==================== Chat Flow 消息样式 ==================== */

.chatflow-message {
  padding: 12px 16px;
  margin-bottom: 12px;
  border-radius: 12px;
  position: relative;
  cursor: grab;
  transition: transform 0.2s, box-shadow 0.2s;
}

.chatflow-message:active {
  cursor: grabbing;
}

.chatflow-message.user {
  background: var(--bg-tertiary);
  margin-left: 40px;
}

.chatflow-message.assistant {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.chatflow-message:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.chatflow-message.dragging {
  opacity: 0.5;
  transform: scale(0.95);
}

.chatflow-message-drag-handle {
  position: absolute;
  left: -28px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  cursor: grab;
  opacity: 0;
  transition: opacity 0.2s;
  color: var(--text-tertiary);
}

.chatflow-message:hover .chatflow-message-drag-handle {
  opacity: 1;
}

.chatflow-message-content {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
}

/* ==================== 画布节点样式 ==================== */

.canvas-node {
  cursor: move;
}

.canvas-node-bg {
  fill: var(--bg-secondary);
  stroke: var(--border-color);
  stroke-width: 1;
  rx: 8;
  ry: 8;
  transition: stroke 0.2s, stroke-width 0.2s;
}

.canvas-node:hover .canvas-node-bg {
  stroke: var(--color-saturn-yellow);
  stroke-width: 2;
}

.canvas-node.selected .canvas-node-bg {
  stroke: var(--color-saturn-yellow);
  stroke-width: 2;
}

.canvas-node-text {
  fill: var(--text-primary);
  font-size: 12px;
  font-family: inherit;
}

.canvas-node-role {
  fill: var(--text-tertiary);
  font-size: 10px;
  text-transform: uppercase;
}

.canvas-node-resize {
  fill: var(--color-saturn-yellow);
  cursor: nwse-resize;
  opacity: 0;
  transition: opacity 0.2s;
}

.canvas-node:hover .canvas-node-resize {
  opacity: 0.6;
}

.canvas-node-resize:hover {
  opacity: 1 !important;
}

/* ==================== 画布连线样式 ==================== */

.canvas-edge {
  stroke: var(--border-color);
  stroke-width: 2;
  fill: none;
  cursor: pointer;
  transition: stroke 0.2s;
}

.canvas-edge:hover {
  stroke: var(--color-saturn-yellow);
}

.canvas-edge-label {
  fill: var(--text-secondary);
  font-size: 11px;
  text-anchor: middle;
}

.canvas-edge-arrowhead {
  fill: var(--border-color);
}

/* ==================== 拖拽放置提示 ==================== */

.canvas-drop-zone {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(245, 213, 71, 0.1);
  border: 2px dashed var(--color-saturn-yellow);
  border-radius: 8px;
  pointer-events: none;
  z-index: 50;
}

.canvas-drop-zone.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.canvas-drop-zone-text {
  font-size: 16px;
  color: var(--color-saturn-yellow);
  font-weight: 500;
}

/* ==================== 浮动工具栏样式 ==================== */

.canvas-floating-toolbar {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.canvas-tool-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
  position: relative;
}

.canvas-tool-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.canvas-tool-btn.active {
  background: var(--color-saturn-yellow);
  color: #000;
}

.canvas-tool-btn svg {
  width: 20px;
  height: 20px;
}

.canvas-tool-divider {
  width: 24px;
  height: 1px;
  background: var(--border-color);
  margin: 4px auto;
}

.canvas-export-menu {
  display: none;
  position: absolute;
  right: 100%;
  top: 0;
  margin-right: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 4px 0;
  min-width: 120px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.canvas-export-menu.active {
  display: block;
}

.export-menu-item {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}

.export-menu-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* 连线预览层 */
.edge-preview-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 60;
}

/* 节点连接端口 */
.canvas-node-port {
  fill: var(--bg-secondary);
  stroke: var(--border-color);
  stroke-width: 2;
  cursor: crosshair;
  opacity: 0;
  transition: opacity 0.2s;
}

.canvas-node:hover .canvas-node-port {
  opacity: 1;
}

.canvas-node-port:hover {
  fill: var(--color-saturn-yellow);
  stroke: var(--color-saturn-yellow);
}

/* 连线样式增强 */
.canvas-edge path {
  stroke: var(--text-tertiary);
  stroke-width: 2;
  fill: none;
  transition: stroke 0.2s;
}

.canvas-edge:hover path {
  stroke: var(--color-saturn-yellow);
}

.canvas-edge-label-bg {
  fill: var(--bg-secondary);
  rx: 4;
  ry: 4;
}

/* 双向高亮样式 */
.chatflow-message.highlighted {
  outline: 2px solid var(--color-saturn-yellow);
  outline-offset: 2px;
}

.canvas-node.highlighted .canvas-node-bg {
  stroke: var(--color-saturn-yellow);
  stroke-width: 3;
  filter: drop-shadow(0 0 8px rgba(245, 213, 71, 0.5));
}

/* 移动端适配 */
@media (max-width: 768px) {
  .chatflow-llm-panel {
    width: 100%;
    max-width: 100%;
    min-width: auto;
  }

  .chatflow-divider {
    display: none;
  }

  .chatflow-canvas-container {
    display: none;
  }

  .chatflow-back-btn {
    top: 8px;
    left: 8px;
    padding: 6px 12px;
    font-size: 12px;
  }

  .canvas-floating-toolbar {
    right: 8px;
    padding: 4px;
  }

  .canvas-tool-btn {
    width: 32px;
    height: 32px;
  }
}

.sidebar-tabs {
  display: none;
}

.tab-content {
  display: none;
}

/* ==================== 空间管理 ==================== */
.spaces-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.space-item {
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  /* 圆角大小，可自定义调整 */
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.space-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-dark);
}

.space-item.active {
  border-color: var(--accent-color);
  background: var(--bg-hover);
}

.space-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.space-info {
  flex: 1;
  min-width: 0;
}

.space-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.space-doc-count {
  font-size: 11px;
  color: var(--text-secondary);
}

.space-actions {
  display: flex;
  gap: 4px;
}

.space-action-icon {
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  color: var(--text-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.space-action-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.space-action-icon.delete:hover {
  background: var(--error-color);
  color: white;
}

/* 空间详情面板 */
.space-detail {
  display: none;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
}

.space-detail.active {
  display: flex;
}

.space-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.space-detail-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.upload-file-btn {
  padding: 6px 12px;
  background: var(--accent-color);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}

.upload-file-btn:hover {
  background: var(--accent-hover);
}

.document-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 300px;
  overflow-y: auto;
}

.document-item {
  padding: 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.document-info {
  flex: 1;
  min-width: 0;
}

.document-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.document-meta {
  font-size: 10px;
  color: var(--text-tertiary);
}

.document-delete {
  width: 20px;
  height: 20px;
  padding: 0;
  background: transparent;
  color: var(--text-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.document-delete:hover {
  background: var(--error-color);
  color: white;
}

.new-space-btn {
  width: 100%;
  padding: var(--spacing-md);
  background: transparent;
  border: 1px dashed var(--border-dark);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.new-space-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-color);
  color: var(--text-primary);
}


.sessions-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.session-item {
  padding: var(--spacing-md);
  padding-right: 36px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.session-item:hover {
  background: var(--bg-tertiary);
}

.session-item.active {
  background: var(--bg-tertiary);
  border-color: var(--border-dark);
}

.session-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-preview {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-delete-btn {
  position: absolute;
  top: 50%;
  right: var(--spacing-sm);
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  color: var(--text-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 18px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

.session-delete-btn:hover {
  background: var(--error-color);
  color: white;
  opacity: 1;
}

/* 侧边栏对话附件预览 */
.session-attachments {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  flex-wrap: nowrap;
  overflow: hidden;
}

.session-attachment-preview {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 12px;
}

.session-attachment-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.session-attachment-preview .attachment-icon {
  font-size: 12px;
  color: var(--text-secondary);
}

.session-attachment-preview.video-preview {
  position: relative;
  color: var(--text-secondary);
}

.session-attachment-preview.audio-preview {
  color: var(--text-secondary);
}

/* 会话列表加载指示器 */
.sessions-loader {
  display: flex;
  justify-content: center;
  padding: 12px;
}

.loader-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* 固定底部区域 */
.sidebar-footer-fixed {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.user-section {
  display: flex;
  align-items: center;
  padding: 12px;
  background: var(--bg-tertiary);
  border-radius: 16px;
  gap: 12px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.user-info-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.user-info-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 2px;
}

.user-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.settings-btn-inline {
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.settings-btn-inline:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.settings-btn-inline .material-symbols-outlined {
  font-size: 18px;
}

.sidebar-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.sidebar-action-btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--border-color);
  /* border-radius: var(--radius-sm); removed for specific corners */
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.sidebar-action-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-dark);
}

.sidebar-actions .sidebar-action-btn:first-child {
  border-radius: 10px 10px 10px 20px;
  /* 设置按钮 左下角为30dp 其他14dp */
}

.sidebar-actions .sidebar-action-btn:last-child {
  border-radius: 10px 10px 20px 10px;
  /* 退出按钮 右下是30dp 其他14dp */
}

/* ==================== 主内容区 ==================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: transparent;
  /* 改为透明 */
  position: relative;
  overflow: hidden;
  height: 100%;
  /* 确保高度 */
  min-width: 0;
  /* 修复Flex子项溢出问题 */
  z-index: 2;
  /* 确保在canvas之上 */
}

.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  padding-bottom: 200px;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.chat-container::-webkit-scrollbar {
  width: 6px;
}

.chat-container::-webkit-scrollbar-track {
  background: transparent;
}

.chat-container::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

/* ==================== 边缘羽化效果 (Feathering / Gradient Mask) ==================== */
/* 对话区域边缘羽化 - 使用 main-content 叠加伪元素 */
.main-content::before,
.main-content::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 50px;
  /* 对话区颜色渐变高度 */
  pointer-events: none;
  z-index: 10;
}

/* 顶部羽化 - 颜色渐变层 */
.main-content::before {
  top: 0;
  background: linear-gradient(to bottom,
      var(--bg-primary) 0%,
      rgba(13, 13, 13, 0.8) 30%,
      rgba(13, 13, 13, 0.4) 60%,
      transparent 100%);
}

/* 底部羽化 - 颜色渐变层 (仅在输入框上方一点) */
.main-content::after {
  bottom: 0;
  background: linear-gradient(to top,
      var(--bg-primary) 0%,
      rgba(13, 13, 13, 0.8) 30%,
      rgba(13, 13, 13, 0.4) 60%,
      transparent 100%);
}

/* 浅色主题的边缘羽化 */
[data-theme="light"] .main-content::before {
  background: linear-gradient(to bottom,
      var(--bg-primary) 0%,
      rgba(255, 255, 255, 0.8) 30%,
      rgba(255, 255, 255, 0.4) 60%,
      transparent 100%);
}

[data-theme="light"] .main-content::after {
  background: linear-gradient(to top,
      var(--bg-primary) 0%,
      rgba(255, 255, 255, 0.8) 30%,
      rgba(255, 255, 255, 0.4) 60%,
      transparent 100%);
}

/* 对话区域边缘模糊层 - 叠加在颜色渐变之上 */
.chat-edge-blur-top,
.chat-edge-blur-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 40px;
  /* 对话区模糊层高度 */
  pointer-events: none;
  z-index: 11;
  backdrop-filter: blur(20px);
  /* 模糊强度增加5倍 */
  -webkit-backdrop-filter: blur(20px);
}

.chat-edge-blur-top {
  top: 0;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
}

.chat-edge-blur-bottom {
  bottom: 0;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
}

.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  padding: var(--spacing-xl);
  position: relative;
  /* 确保z-index生效 */
  z-index: 10;
  /* 提升层级 */
  opacity: 1;
  /* 强制不透明 */
  visibility: visible;
  /* 强制可见 */
}

.welcome-icon {
  width: 96px;
  height: 96px;
  margin-bottom: var(--spacing-xl);
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 4px 12px rgba(245, 213, 71, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-icon svg {
  width: 100%;
  height: 100%;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

.welcome-title {
  font-size: 32px;
  font-weight: 700;
  /* 暗色模式：白色文字 + 从左到右的金属光泽闪过 */
  background:
    linear-gradient(90deg,
      transparent 0%,
      rgba(30, 30, 30, 0.9) 10%,
      rgba(60, 60, 60, 0.85) 20%,
      rgba(80, 80, 80, 0.7) 30%,
      rgba(120, 120, 120, 0.5) 40%,
      transparent 50%,
      transparent 100%),
    linear-gradient(90deg, #FFFFFF, #FFFFFF);
  background-size: 250% 100%, 100% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0;
  letter-spacing: -0.5px;
  animation: metalShine 3s linear infinite;
  position: relative;
}

/* 金属光泽闪过动画 - 从左到右，完美循环 */
@keyframes metalShine {
  0% {
    background-position: 200% 0, 0 0;
  }

  100% {
    background-position: -100% 0, 0 0;
  }
}

.welcome-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
}

.welcome-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 420px;
  margin-top: 32px;
}

.action-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  /* 居中对齐 */
  justify-content: center;
  gap: 12px;
  aspect-ratio: 1;
  min-width: 140px;
  min-height: 140px;
  position: relative;
  overflow: hidden;
}

.action-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.action-card:hover::before {
  opacity: 1;
}

.action-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.action-card:nth-child(1) {
  border-radius: 30px 13px 13px 13px;
}

.action-card:nth-child(2) {
  border-radius: 13px 30px 13px 13px;
}

.action-card:nth-child(3) {
  border-radius: 13px 13px 13px 30px;
}

.action-card:nth-child(4) {
  border-radius: 13px 13px 30px 13px;
}

.action-card-icon {
  font-size: 32px;
  background: linear-gradient(135deg, #FFFFFF 0%, #D0D0D0 50%, #606060 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.action-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  /* 文字居中 */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

[data-theme="light"] .welcome-icon {
  background: linear-gradient(135deg, #404040 0%, #808080 50%, #D0D0D0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .welcome-title {
  /* 浅色模式：黑色文字 + 从左到右的白灰金属光泽闪过 */
  background:
    linear-gradient(90deg,
      transparent 0%,
      rgba(255, 255, 255, 0.95) 10%,
      rgba(230, 230, 230, 0.9) 20%,
      rgba(200, 200, 200, 0.8) 30%,
      rgba(170, 170, 170, 0.6) 40%,
      transparent 50%,
      transparent 100%),
    linear-gradient(90deg, #1a1a1a, #1a1a1a);
  background-size: 250% 100%, 100% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: metalShine 3s linear infinite;
}

[data-theme="light"] .action-card-icon {
  background: linear-gradient(135deg, #303030 0%, #606060 50%, #909090 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.messages-list {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  min-width: 0;
  /* 防止 flex 子元素溢出 */
  overflow-wrap: break-word;
}

.message {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  animation: messageSlideIn 0.3s ease-out;
}

/* 用户消息居右对齐 */
.message.user {
  flex-direction: row-reverse;
  justify-content: flex-start;
  margin-bottom: calc(var(--spacing-xl) * 1.5);
}

/* AI消息居左对齐，垂直布局 - 头像、竖线、正文垂直对齐 */
.message.assistant {
  flex-direction: column;
  /* 垂直布局 */
  align-items: flex-start;
  margin-bottom: calc(var(--spacing-xl) * 2);
  position: relative;
  gap: var(--spacing-sm);
  /* 缩小间距 */
}

@keyframes messageSlideIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.message.user .message-avatar {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 14px;
}

.message.assistant .message-avatar {
  display: flex;
  position: relative;
}

/* AI消息垂直引导线 - 只在展开时显示，灰色，位置在头像正下方 */
.message.assistant .message-avatar::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  width: 2px;
  height: var(--thinking-line-height, 0);
  background: var(--text-tertiary);
  opacity: 0;
  pointer-events: none;
  transition: height 0.3s ease, opacity 0.3s ease;
}

/* 展开时显示垂直线 */
.message.assistant:has(.thinking-content.expanded) .message-avatar::after {
  opacity: 0.3;
}

.message-content {
  flex: 1;
  min-width: 0;
}

/* 用户消息内容居右 */
.message.user .message-content {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.message-text {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  line-height: 1.7;
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  /* 处理长 URL 和连续字符 */
  hyphens: auto;
  /* 自动连字符换行 */
  -webkit-hyphens: auto;
  font-size: 14px;
  max-width: 100%;
  /* 确保不溢出容器 */
  min-width: 0;
  /* 防止 flex 子元素溢出 */
}

.message.user .message-text {
  background: var(--bg-secondary);
  color: var(--text-primary);
  max-width: 100%;
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  word-break: break-word;
  overflow-wrap: break-word;
}

/* 主界面消息附件预览 */
.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
  max-width: 100%;
}

.message-attachment-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

.message-attachment-item.image-attachment {
  max-width: 200px;
  max-height: 200px;
}

.message-attachment-item.image-attachment img {
  width: 100%;
  height: 100%;
  max-width: 200px;
  max-height: 200px;
  object-fit: cover;
  display: block;
  cursor: pointer;
  transition: transform 0.2s;
}

.message-attachment-item.image-attachment img:hover {
  transform: scale(1.02);
}

.message-attachment-item.media-attachment {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  min-width: 120px;
}

.message-attachment-item .media-icon {
  font-size: 24px;
}

.message-attachment-item .media-info {
  flex: 1;
  min-width: 0;
}

.message-attachment-item .media-type {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.message-attachment-item .media-name {
  font-size: 11px;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

.message.assistant .message-text {
  background: transparent;
  color: var(--text-primary);
  padding: 0;
  padding-left: 18px;
  /* 与头像中心/竖线对齐 (头像36px / 2 = 18px) */
}

/* 消息元信息和操作栏 */
.message-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  font-size: 11px;
  color: var(--text-tertiary);
  padding-left: 18px;
  /* 与消息文本左边距对齐 */
}

.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
}

.meta-badge .material-symbols-outlined {
  font-size: 12px;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.copy-btn .material-symbols-outlined {
  font-size: 16px;
}

.copy-btn.copied {
  color: var(--accent-color);
  border-color: var(--accent-color);
}

/* ==================== 消息操作按钮样式 ==================== */
.message-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-shrink: 0;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 6px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.action-btn.delete-btn:hover {
  border-color: #ef4444;
  color: #ef4444;
}

.action-btn .material-symbols-outlined {
  font-size: 16px;
}

/* 消息编辑区域 */
.message-edit-container {
  width: 100%;
  margin-top: 8px;
}

.message-edit-textarea {
  width: 100%;
  min-height: 80px;
  max-height: 300px;
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  line-height: 1.6;
  resize: vertical;
  outline: none;
}

.message-edit-textarea:focus {
  border-color: var(--accent-color);
}

.message-edit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
}

.edit-cancel-btn,
.edit-save-btn {
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.edit-cancel-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.edit-cancel-btn:hover {
  background: var(--bg-hover);
}

.edit-save-btn {
  background: var(--accent-color);
  border: none;
  color: white;
}

.edit-save-btn:hover {
  opacity: 0.9;
}

/* 懒加载附件样式 */
.lazy-attachments {
  margin-bottom: 8px;
}

.lazy-attachment-placeholder {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.lazy-attachment-placeholder:hover {
  background: var(--bg-hover);
  border-color: var(--text-secondary);
}

.lazy-attachment-placeholder.loading {
  cursor: wait;
  opacity: 0.7;
}

.lazy-attachment-placeholder.error {
  border-color: var(--error-color);
  color: var(--error-color);
}

.lazy-attachment-placeholder .loading-spinner {
  animation: spin 1s linear infinite;
}

/* 重新生成弹窗 */
.regenerate-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

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

.regenerate-modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 90%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.regenerate-modal h3 {
  margin-bottom: 20px;
  font-size: 18px;
  color: var(--text-primary);
}

.regenerate-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.regenerate-option:last-child {
  border-bottom: none;
}

.regenerate-option label {
  color: var(--text-primary);
  font-size: 14px;
}

.regenerate-option select {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  min-width: 150px;
}

.regenerate-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.regenerate-cancel-btn,
.regenerate-confirm-btn {
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.regenerate-cancel-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.regenerate-cancel-btn:hover {
  background: var(--bg-hover);
}

.regenerate-confirm-btn {
  background: var(--accent-color);
  border: none;
  color: white;
}

.regenerate-confirm-btn:hover {
  opacity: 0.9;
}

/* 用户消息底栏 */
.user-message-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: 8px;
  gap: 4px;
}

/* ==================== 引用来源样式 ==================== */


/* 行内角标样式 [1] [2] 等 */
.citation-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  margin: 0 2px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  vertical-align: middle;
}

.citation-badge:hover {
  background: var(--accent-color);
  color: var(--bg-primary);
  border-color: var(--accent-color);
  transform: translateY(-1px);
}

/* 来源列表容器 */
.sources-list {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  padding-left: 18px;
  /* 与消息文本左边距对齐 */
}

.sources-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  width: 100%;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.sources-toggle-btn {
  margin-left: auto;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 11px;
  line-height: 1.4;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sources-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sources-body {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  width: 100%;
}

.sources-list.is-collapsed .sources-body {
  display: none;
}

.sources-header .material-symbols-outlined {
  font-size: 16px;
}

/* 来源卡片 */
.source-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  max-width: 280px;
  text-decoration: none;
}

.source-card:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.source-index {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  background: var(--accent-color);
  color: var(--bg-primary);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.source-favicon {
  width: 16px;
  height: 16px;
  border-radius: 2px;
  flex-shrink: 0;
  object-fit: contain;
}

.source-favicon-placeholder {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-hover);
  border-radius: 2px;
  font-size: 10px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.source-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.source-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.source-domain {
  font-size: 10px;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==================== Mermaid 图表样式 ==================== */

/* ========== [高度/宽度限制] Mermaid 图表容器 ==========
       min-height: 400px 防止图表加载时的页面抖动
       max-width: 在 svg 上设置为 100%
       如需调整，修改下面的值
    */
.mermaid-container {
  margin: 16px 0;
  padding: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  position: relative;
  min-height: 100px;
  /* [高度限制] 未渲染时的最小高度，可调整 */
  max-width: 800px;
  /* [宽度限制] 可调整此值 */
}

/* 渲染完成后移除最小高度限制 */
.mermaid-container.rendered {
  min-height: unset;
}

.mermaid-container svg {
  max-width: 100%;
  /* [宽度限制] SVG 最大宽度，可调整 */
  height: auto;
  display: block;
  margin: 0 auto;
}

/* 加载状态 */
.mermaid-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-secondary);
  padding: 40px;
  font-size: 14px;
  animation: pulse 1.5s ease-in-out infinite;
}

.mermaid-loading-icon {
  animation: spin 1.5s linear infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* 错误状态 */
.mermaid-error {
  color: var(--error-color);
  padding: 16px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-md);
  font-size: 14px;
}

.mermaid-error span {
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.mermaid-error pre {
  margin-top: 8px;
  padding: 12px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-secondary);
}

.mermaid-error details {
  margin-top: 12px;
}

.mermaid-error summary {
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 12px;
  user-select: none;
}

.mermaid-error summary:hover {
  color: var(--text-primary);
}

/* 图表工具栏 */
.mermaid-toolbar {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 10;
}

.mermaid-container:hover .mermaid-toolbar {
  opacity: 1;
}

.mermaid-toolbar button {
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.mermaid-toolbar button:hover {
  background: var(--bg-hover);
  border-color: var(--text-tertiary);
  transform: scale(1.05);
}

/* 全屏模式 */
.mermaid-container.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  margin: 0;
  border-radius: 0;
  z-index: 9999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.mermaid-container.fullscreen svg {
  max-width: 95%;
  max-height: 90vh;
}

.mermaid-container.fullscreen .mermaid-toolbar {
  opacity: 1;
  top: 20px;
  right: 20px;
}

/* 浅色主题适配 */
[data-theme="light"] .mermaid-container {
  background: #fafafa;
}

[data-theme="light"] .mermaid-error {
  background: rgba(239, 68, 68, 0.08);
}

[data-theme="light"] .mermaid-container.fullscreen {
  background: #ffffff;
}

/* 🎨 Mermaid 流式渲染过渡动画 */
.mermaid-container svg {
  animation: mermaidFadeIn 0.3s ease-out;
}

@keyframes mermaidFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 隐藏 loading 当渲染完成时 */
.mermaid-container.rendered .mermaid-loading {
  display: none;
}

/* 渲染中状态 */
.mermaid-container.rendering .mermaid-loading-icon {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* ==================== Markdown渲染样式 ==================== */
.message-text h1,
.message-text h2,
.message-text h3,
.message-text h4,
.message-text h5,
.message-text h6 {
  margin: 1em 0 0.5em 0;
  font-weight: 600;
  line-height: 1.3;
}

.message-text h1 {
  font-size: 1.8em;
}

.message-text h2 {
  font-size: 1.5em;
}

.message-text h3 {
  font-size: 1.3em;
}

.message-text h4 {
  font-size: 1.1em;
}

.message-text p {
  margin: 0.5em 0;
}

.message-text ul,
.message-text ol {
  margin: 0.5em 0;
  padding-left: 2em;
}

.message-text li {
  margin: 0.3em 0;
}

/* 列表项标记使用RAI主题色 */
.message-text ul li::marker {
  color: var(--color-saturn-yellow);
}

.message-text ol li::marker {
  color: var(--color-saturn-yellow);
  font-weight: 600;
}

.message-text a {
  color: var(--accent-color);
  text-decoration: underline;
}

.message-text blockquote {
  border-left: 3px solid var(--color-saturn-yellow);
  padding-left: 1em;
  margin: 1em 0;
  color: var(--text-secondary);
}

.message-text code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
  font-size: 0.9em;
  word-break: break-word;
  /* 允许长代码换行 */
  white-space: pre-wrap;
  /* 保持格式但允许换行 */
}

/* 代码块容器 */
.code-block-wrapper {
  position: relative;
  margin: 1em 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #1e1e1e;
}

/* 代码块头部 */
.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
}

/* 语言标签 */
.code-block-lang {
  color: var(--color-saturn-yellow);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
}

/* 复制按钮 */
.code-copy-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
}

.code-copy-btn:hover {
  background: var(--bg-hover);
  border-color: var(--color-saturn-yellow);
  color: var(--color-saturn-yellow);
}

.code-copy-btn.copied {
  color: var(--success-color);
  border-color: var(--success-color);
}

.code-copy-btn svg {
  width: 14px;
  height: 14px;
}

/* 代码块内容 */
.message-text pre {
  background: #1e1e1e;
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: 0;
  max-width: 100%;
  /* 确保不溢出 */
  white-space: pre;
  /* 保持代码格式 */
}

/* 无容器的pre（回退样式） */
.message-text>pre:not(.code-block-wrapper pre) {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 0.8em 0;
}

.message-text pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.85em;
  font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
  white-space: pre;
  display: block;
}

/* highlight.js 覆盖样式 */
.message-text pre code.hljs {
  background: transparent;
  padding: 0;
}

.message-text img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 0.8em 0;
}

/* ========== [高度/宽度限制] 流式图片加载容器 ==========
       min-height: 400px 防止图片加载时的页面抖动
       max-width: 100% 限制图片最大宽度
       如需调整，修改下面的值
    */
.streaming-image-container {
  position: relative;
  min-height: 400px;
  /* [高度限制] 可调整此值 */
  max-width: 800px;
  /* [宽度限制] 可调整此值 */
  border-radius: var(--radius-md);
  margin: 0.8em 0;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.streaming-image-skeleton {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg,
      var(--bg-tertiary) 0%,
      var(--bg-hover) 50%,
      var(--bg-tertiary) 100%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.streaming-image-skeleton::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpath d='M21 15l-5-5L5 21'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.5;
}

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

  100% {
    background-position: -200% 0;
  }
}

.streaming-image-container img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  display: block;
  opacity: 1;
  border-radius: var(--radius-md);
  margin: 0;
  /* 图片加载时直接显示，用户可以看到图片从上到下逐渐加载 */
  background: transparent;
}

/* 图片加载完成后隐藏骨架屏 */
.streaming-image-container.loaded .streaming-image-skeleton {
  display: none;
}

.streaming-image-container.loaded {
  min-height: unset;
  background: transparent;
}

.streaming-image-container.error {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-error {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  color: var(--error-color);
  font-size: 13px;
}

/* ==================== KaTeX 数学公式样式 ==================== */
.message-text .katex {
  font-size: 1.1em;
}

.message-text .katex-display {
  margin: 1em 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5em 0;
}

.message-text .katex-display>.katex {
  text-align: center;
}

.message-text .katex-html {
  white-space: normal;
}

/* 确保行内公式对齐 */
.message-text .katex-inline {
  display: inline;
  vertical-align: baseline;
}

/* ==================== 流式输出模糊动画 ==================== */
@keyframes streamBlurIn {
  0% {
    opacity: 0;
    filter: blur(8px);
    transform: translateY(4px);
  }

  100% {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

.streaming-char {
  display: inline;
  animation: streamBlurIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

#streamingContent {
  animation: streamBlurIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 表格容器 - 支持水平滚动 */
.message-text .table-wrapper {
  overflow-x: auto;
  max-width: 100%;
  margin: 1em 0;
  -webkit-overflow-scrolling: touch;
  /* 移动端平滑滚动 */
}

.message-text table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  min-width: auto;
  margin: 1em 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.message-text table th,
.message-text table td {
  border: 1px solid var(--border-color);
  border-top: none;
  border-left: none;
  padding: 0.5em 0.75em;
  text-align: left;
}

/* 表格第一行单元格顶部边框 */
.message-text table tr:first-child th,
.message-text table tr:first-child td {
  border-top: none;
}

/* 表格每行第一个单元格左边框 */
.message-text table th:first-child,
.message-text table td:first-child {
  border-left: none;
}

/* 表格最后一列右边框 */
.message-text table th:last-child,
.message-text table td:last-child {
  border-right: none;
}

/* 表格最后一行底边框 */
.message-text table tr:last-child td {
  border-bottom: none;
}

.message-text table th {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.message-text hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 1.5em 0;
}

/* 浅色主题Markdown样式 */
[data-theme="light"] .message-text code {
  background: #F3F4F6;
}

[data-theme="light"] .message-text pre {
  background: #F9FAFB;
  border-color: #E5E7EB;
}

[data-theme="light"] .message-text blockquote {
  border-left-color: var(--color-saturn-yellow);
}

[data-theme="light"] .message-text table {
  border-color: #E5E7EB;
}

[data-theme="light"] .message-text table th {
  background: #F3F4F6;
}

[data-theme="light"] .message-text table th,
[data-theme="light"] .message-text table td {
  border-color: #E5E7EB;
}



/* ==================== 时间轴思考UI (Timeline Thinking UI) ==================== */

/* 时间轴容器 */
.thinking-timeline {
  position: relative;
  padding: var(--spacing-md) 0;
  padding-left: 24px;
  /* 为左侧时间轴线留出空间 */
  margin-bottom: var(--spacing-md);
}

/* 左侧垂直时间轴线 */
.thinking-timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--border-color);
  border-radius: 1px;
}

/* 步骤项 - 带渐入动画 */
.thinking-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: var(--spacing-md);
  min-height: 28px;
  /* 渐入动画 */
  opacity: 0;
  transform: translateY(8px);
  animation: step-fade-in 1s ease forwards;
}

/* 步骤渐入动画 - 依次延迟显示 */
.thinking-step:nth-child(1) {
  animation-delay: 0s;
}

.thinking-step:nth-child(2) {
  animation-delay: 1.5s;
}

.thinking-step:nth-child(3) {
  animation-delay: 3s;
}

.thinking-step:nth-child(4) {
  animation-delay: 4.5s;
}

@keyframes step-fade-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 历史消息不需要动画 */
.message .thinking-step {
  animation: none;
  opacity: 1;
  transform: none;
}

.thinking-step:last-child {
  margin-bottom: 0;
}

/* 步骤节点圆点 */
.thinking-step-node {
  position: absolute;
  left: -20px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  border: 2px solid var(--bg-primary);
  z-index: 2;
  transition: all 0.3s ease;
}

/* 节点状态：未开始 */
.thinking-step[data-status="pending"] .thinking-step-node {
  background: var(--border-color);
  opacity: 0.5;
}

/* 节点状态：进行中 - RAI主题色 + 呼吸灯 */
.thinking-step[data-status="active"] .thinking-step-node {
  background: var(--color-saturn-yellow);
  box-shadow: 0 0 8px var(--color-saturn-yellow);
  animation: node-pulse 1.5s ease-in-out infinite;
}

.thinking-step[data-status="running"] .thinking-step-node {
  background: var(--color-saturn-yellow);
  box-shadow: 0 0 8px var(--color-saturn-yellow);
  animation: node-pulse 1.5s ease-in-out infinite;
}

@keyframes node-pulse {

  0%,
  100% {
    box-shadow: 0 0 4px var(--color-saturn-yellow);
  }

  50% {
    box-shadow: 0 0 12px var(--color-saturn-yellow), 0 0 20px rgba(255, 193, 7, 0.4);
  }
}

/* 节点状态：已完成 */
.thinking-step[data-status="done"] .thinking-step-node {
  background: var(--text-tertiary);
  opacity: 1;
}

/* 节点状态：深度思考（特殊紫色） */
.thinking-step[data-status="thinking"] .thinking-step-node {
  background: #a855f7;
  box-shadow: 0 0 8px #a855f7;
  animation: node-pulse-purple 1.5s ease-in-out infinite;
}

.thinking-step[data-status="failed"] .thinking-step-node {
  background: #ef4444;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.45);
}

@keyframes node-pulse-purple {

  0%,
  100% {
    box-shadow: 0 0 4px #a855f7;
  }

  50% {
    box-shadow: 0 0 12px #a855f7, 0 0 20px rgba(168, 85, 247, 0.4);
  }
}

/* 步骤内容区域 */
.thinking-step-content {
  flex: 1;
  min-width: 0;
}

/* 步骤标题 */
.thinking-step-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 2px;
}

.thinking-step[data-status="pending"] .thinking-step-title {
  color: var(--text-tertiary);
}

.thinking-step[data-status="active"] .thinking-step-title {
  color: var(--text-primary);
}

.thinking-step[data-status="running"] .thinking-step-title {
  color: var(--text-primary);
}

.thinking-step[data-status="failed"] .thinking-step-title {
  color: #fca5a5;
}

/* 步骤详情 */
.thinking-step-detail {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.thinking-step[data-status="pending"] .thinking-step-detail {
  color: var(--text-tertiary);
  opacity: 0.6;
}

.thinking-step[data-status="failed"] .thinking-step-detail {
  color: #fca5a5;
}

/* 过程轨迹折叠按钮 */
.process-trace-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255, 193, 7, 0.12);
  border: 1px solid rgba(255, 193, 7, 0.25);
  border-radius: var(--radius-md);
  color: var(--color-saturn-yellow);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.process-trace-toggle:hover {
  background: rgba(255, 193, 7, 0.2);
  border-color: rgba(255, 193, 7, 0.45);
}

.process-trace-toggle .toggle-icon {
  transition: transform 0.3s ease;
  font-size: 14px;
}

.process-trace-toggle.expanded .toggle-icon {
  transform: rotate(180deg);
}

.process-trace-list {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) var(--spacing-md);
  border-left: 2px solid rgba(255, 193, 7, 0.25);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(255, 193, 7, 0.04);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all 0.25s ease;
}

.process-trace-list.expanded {
  max-height: 360px;
  opacity: 1;
  overflow-y: auto;
}

.process-dot-item {
  position: relative;
  margin-bottom: 8px;
  padding-left: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.process-dot-item:last-child {
  margin-bottom: 0;
}

.process-dot-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.process-dot-item.framework::before {
  background: #22c55e;
}

.process-dot-item.agent::before {
  background: #38bdf8;
}

.process-dot-item.search::before {
  background: #f59e0b;
}

.process-dot-item.reasoning::before {
  background: #a855f7;
}

.process-dot-item.token::before {
  background: var(--color-saturn-yellow);
}

.process-dot-meta {
  font-size: 10px;
  color: var(--text-tertiary);
  opacity: 0.9;
}

.process-dot-text {
  color: var(--text-secondary);
}

.process-trace-list::-webkit-scrollbar {
  width: 4px;
}

.process-trace-list::-webkit-scrollbar-track {
  background: transparent;
}

.process-trace-list::-webkit-scrollbar-thumb {
  background: rgba(255, 193, 7, 0.3);
  border-radius: 2px;
}

.agent-trace-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.agent-trace-btn {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
}

.agent-trace-btn:hover {
  border-color: rgba(255, 193, 7, 0.45);
  color: var(--text-primary);
}

.agent-task-list {
  margin-top: 10px;
  padding-left: 6px;
}

.agent-task-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-bottom: 8px;
}

.agent-task-item:last-child {
  margin-bottom: 0;
}

.agent-task-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  background: var(--border-color);
  flex-shrink: 0;
}

.agent-task-dot[data-status="pending"] {
  opacity: 0.6;
}

.agent-task-dot[data-status="running"] {
  background: var(--color-saturn-yellow);
  box-shadow: 0 0 8px var(--color-saturn-yellow);
}

.agent-task-dot[data-status="done"] {
  background: var(--text-tertiary);
}

.agent-task-dot[data-status="failed"] {
  background: #ef4444;
}

.agent-task-text {
  min-width: 0;
}

.agent-task-title {
  font-size: 12px;
  color: var(--text-primary);
  line-height: 1.4;
}

.agent-task-detail {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.agent-draft-list {
  margin-top: 10px;
}

.agent-draft-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 8px;
}

.agent-draft-item:last-child {
  margin-bottom: 0;
}

.agent-draft-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 8px 10px;
  cursor: pointer;
}

.agent-draft-title {
  font-size: 12px;
  color: var(--text-primary);
  text-align: left;
}

.agent-draft-meta {
  font-size: 11px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.agent-draft-toggle {
  font-size: 11px;
  color: var(--text-tertiary);
}

.agent-draft-summary {
  padding: 0 10px 8px 10px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.agent-draft-content {
  margin: 0;
  padding: 0 10px 10px 10px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all 0.2s ease;
  font-size: 12px;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

.agent-draft-content.expanded {
  max-height: 420px;
  opacity: 1;
  overflow: auto;
}

.agent-metrics {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 8px 10px;
  border: 1px dashed rgba(255, 193, 7, 0.35);
  border-radius: var(--radius-md);
  background: rgba(255, 193, 7, 0.06);
}

/* 深度思考折叠按钮 */
.deep-thinking-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: var(--radius-md);
  color: #a855f7;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.deep-thinking-toggle:hover {
  background: rgba(168, 85, 247, 0.25);
  border-color: rgba(168, 85, 247, 0.5);
}

.deep-thinking-toggle .toggle-icon {
  transition: transform 0.3s ease;
  font-size: 14px;
}

.deep-thinking-toggle.expanded .toggle-icon {
  transform: rotate(180deg);
}

/* 深度思考内容区域 */
.deep-thinking-content {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-md);
  padding-left: var(--spacing-lg);
  background: rgba(168, 85, 247, 0.05);
  border-left: 2px solid rgba(168, 85, 247, 0.3);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.deep-thinking-content.expanded {
  max-height: 50000px;
  opacity: 1;
  overflow-y: auto;
}

/* 深度思考内容滚动条 */
.deep-thinking-content::-webkit-scrollbar {
  width: 4px;
}

.deep-thinking-content::-webkit-scrollbar-track {
  background: transparent;
}

.deep-thinking-content::-webkit-scrollbar-thumb {
  background: rgba(168, 85, 247, 0.3);
  border-radius: 2px;
}

/* 思考句子 */
.thinking-sentence {
  display: block;
  margin-bottom: 8px;
}

.thinking-sentence strong {
  font-weight: 600;
  color: var(--text-primary);
}

/* 正在输入指示器 */
.thinking-current-typing {
  opacity: 0.85;
}

.thinking-current-typing::after {
  content: '▊';
  display: inline;
  animation: cursor-blink 1s ease-in-out infinite;
  color: #a855f7;
  font-weight: normal;
}

@keyframes cursor-blink {

  0%,
  100% {
    opacity: 0;
  }

  50% {
    opacity: 1;
  }
}

/* 隐藏旧样式 */
.thinking-indicator,
.thinking-header,
.thinking-preview,
.thinking-toggle-btn,
.thinking-line,
.thinking-content,
.sentence-display {
  display: none !important;
}

/* 浅色主题适配 */
[data-theme="light"] .thinking-timeline::before {
  background: var(--border-color);
}

[data-theme="light"] .deep-thinking-toggle {
  background: rgba(168, 85, 247, 0.1);
}

[data-theme="light"] .process-trace-list {
  background: rgba(255, 193, 7, 0.03);
}

[data-theme="light"] .deep-thinking-content {
  background: rgba(168, 85, 247, 0.03);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .thinking-timeline {
    padding-left: 20px;
  }

  .thinking-timeline::before {
    left: 6px;
  }

  .thinking-step-node {
    left: -17px;
    width: 8px;
    height: 8px;
  }

  .thinking-step-title {
    font-size: 12px;
  }

  .thinking-step-detail {
    font-size: 11px;
  }

  .deep-thinking-toggle {
    padding: 4px 10px;
    font-size: 11px;
  }

  .process-trace-toggle {
    padding: 4px 10px;
    font-size: 11px;
  }

  .deep-thinking-content {
    font-size: 12px;
    padding: var(--spacing-sm);
    padding-left: var(--spacing-md);
  }
}

/* ==================== 旧样式保留（向后兼容历史消息） ==================== */

/* 图片加载中占位符（流式渲染时使用） */
.image-loading-placeholder {
  display: inline-block;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  margin: 8px 0;
}

/* 图片加载失败提示 */
.image-error {
  display: inline-block;
  padding: 4px 8px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  color: var(--error-color);
  font-size: 12px;
  margin: 4px 0;
}

/* AI头像闪烁动画 - 思考时黄色光晕 */
.ai-avatar.thinking {
  animation: glow-pulse ease-in-out infinite;
}

@keyframes glow-pulse {

  0%,
  100% {
    box-shadow: 0 0 10px var(--color-saturn-yellow),
      0 0 20px var(--color-saturn-yellow);
  }

  50% {
    box-shadow: 0 0 20px var(--color-saturn-yellow),
      0 0 40px var(--color-saturn-yellow);
  }
}

/* AI头像上下缓动动画 - 等待响应时 */
.ai-avatar.processing {
  animation: avatar-bounce 1s ease-in-out infinite;
}

@keyframes avatar-bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-4px);
  }
}

/* 围绕RAI logo的圆形加载圈动画 */
.ai-avatar.processing::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--color-saturn-yellow);
  border-right-color: var(--color-saturn-yellow);
  animation: loading-ring-spin 1s linear infinite;
  pointer-events: none;
}

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

/* 确保头像容器有相对定位 */
.message-avatar {
  position: relative;
}

/* AI加载状态提示 */
.loading-status {
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  color: var(--text-secondary);
  font-size: 12px;
  animation: status-fade 1.5s ease-in-out infinite;
}

.loading-status .status-icon {
  width: 14px;
  height: 14px;
  animation: spin 1s linear infinite;
}

@keyframes status-fade {

  0%,
  100% {
    opacity: 0.6;
  }

  50% {
    opacity: 1;
  }
}

/* 🔍 搜索状态显示 - 与meta-badge风格统一 */
.search-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  margin-bottom: 12px;
  margin-left: 18px;
  /* 与消息文本左边距对齐 */
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  animation: searchStatusSlideIn 0.3s ease-out;
}

@keyframes searchStatusSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-status .search-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1;
}

.search-status .search-label-icon {
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  width: 14px;
  height: 14px;
}

.search-status .search-label-icon.success {
  color: var(--success-color);
}

.search-status .search-label-icon.warning {
  color: var(--warning-color);
}

.search-status .search-query {
  display: inline-flex;
  align-items: center;
  color: var(--text-primary);
  font-weight: 600;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
  line-height: 1.2;
  vertical-align: middle;
}

/* 打字动画效果 */
.search-status .search-query.typewriter {
  animation: typewriterBlink 0.8s step-end infinite;
  border-right: 2px solid var(--text-primary);
}

@keyframes typewriterBlink {

  0%,
  100% {
    border-right-color: var(--text-primary);
  }

  50% {
    border-right-color: transparent;
  }
}

.search-status .search-result-count {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-left: 4px;
}

.search-status.complete {
  border-color: var(--success-color);
  background: rgba(42, 169, 127, 0.1);
  transition: opacity 0.3s ease;
}

.search-status.complete .search-query {
  border-color: var(--success-color);
  animation: none;
  border-right: none;
}

.search-status.complete .search-result-count {
  color: var(--success-color);
  font-weight: 500;
}

/* 浅色主题适配 */
[data-theme="light"] .thinking-toggle-text {
  color: #6B7280;
}

[data-theme="light"] .thinking-expand-icon {
  color: #9CA3AF;
}

[data-theme="light"] .thinking-content {
  color: #6B7280;
}

[data-theme="light"] .sentence-display {
  color: #6B7280;
}

/* 响应式布局 */
@media (max-width: 768px) {
  .sentence-display {
    max-width: calc(100vw - 120px);
    font-size: 12px;
    padding-left: 36px;
    /* 移动端头像28px + 8px间距 */
  }

  .thinking-content {
    padding-left: 22px;
    /* 移动端在竖线右侧 (14px + 8px) */
    font-size: 12px;
  }
}



/* ==================== 输入区域悬浮样式 ==================== */
.input-area {
  position: absolute;
  /* 保持absolute以便桌面端居中 */
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  background: transparent;
  border-top: none;
  pointer-events: none;
  /* 恢复，让布局正常 */
  z-index: 20;
  /* 确保在最上层 */
}

.input-wrapper {
  max-width: 800px;
  margin: 0 auto;
  /* flexbox居中，让宽度变化从中心展开 */
  display: flex;
  justify-content: center;
  overflow: visible;
}

.input-container {
  position: relative;
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  cursor: text;
  width: 100%;
}

[data-theme="light"] .input-container {
  background: rgba(245, 245, 245, 0.7);
}

.input-container:focus-within {
  border-color: var(--text-tertiary);
  box-shadow: 0 0 0 1px var(--text-tertiary), var(--shadow-lg);
}


/* ==================== 引用预览样式 ==================== */
.quote-preview {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  animation: slideIn 0.2s ease;
}

.quote-preview-content {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.quote-preview-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.quote-preview-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
  max-height: 60px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  word-break: break-word;
}

.quote-preview-remove {
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

.quote-preview-remove:hover {
  background: var(--error-color);
  color: white;
}

.quote-preview-remove .remove-icon {
  width: 16px;
  height: 16px;
}

/* 浅色主题引用预览 */
[data-theme="light"] .quote-preview {
  background: #F3F4F6;
  border-left-color: var(--accent-color);
}

/* ==================== 附件预览样式 (多模态) ==================== */
.attachment-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.attachment-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  min-width: 0;
}

.attachment-thumbnail {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.attachment-icon {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.attachment-type {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.attachment-name {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.attachment-remove {
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}

.attachment-remove:hover {
  background: var(--error-color);
  color: white;
}

.attachment-remove .remove-icon {
  width: 16px;
  height: 16px;
}

/* 浅色主题附件预览 */
[data-theme="light"] .attachment-preview {
  background: #F3F4F6;
  border-color: #E5E7EB;
}

/* 底部工具栏：左侧按钮 + 右侧发送 */
.input-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  /* 取消分割线 */
  border-top: none;
  opacity: 1;
  overflow: visible;
}

.toolbar-btn {
  width: 36px;
  /* 圆形按钮 */
  height: 36px;
  padding: 0;
  background: transparent;
  border: none;
  /* 无边框 */
  border-radius: 50%;
  /* 圆形 */
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  /* 涟漪效果需要 */
}

.toolbar-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.toolbar-btn.active {
  background: var(--bg-tertiary);
  color: var(--accent-color);
}

/* MD涟漪效果 */
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
  pointer-events: none;
  z-index: 0;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.toolbar-btn .material-symbols-outlined {
  font-size: 16px;
}

/* 悬浮显示标签（工具提示）- 排除涟漪元素 */
.toolbar-btn span:not(.ripple-effect) {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

/* 添加小箭头 */
.toolbar-btn span::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--bg-secondary);
}

.toolbar-btn:hover span {
  opacity: 1;
  visibility: visible;
}

/* 移动端触摸支持 */
.toolbar-btn.touch-active span {
  opacity: 1;
  visibility: visible;
}

/* 所有设备：鼠标悬停或触摸点击显示标签 */
@media (hover: none) {

  /* 触摸设备上点击显示，2秒后自动隐藏 */
  .toolbar-btn span {
    display: none;
  }

  .toolbar-btn.touch-active span {
    display: block;
  }
}

/* 工具栏右侧空白区域，用于推动发送按钮到右侧 */
.toolbar-spacer {
  flex: 1;
}

/* ==================== 自定义模型选择器 ==================== */
.model-selector {
  position: relative;
  flex: 0 0 auto;
}

.model-select-custom {
  width: auto;
  min-width: 80px;
  height: 36px;
  /* 与工具栏按钮同高 */
  padding: 0 10px 0 14px;
  background: transparent;
  border: none;
  /* 无边框 */
  border-radius: 18px;
  /* 胶囊形状 */
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
  /* 涟漪效果需要 */
  position: relative;
}

.model-select-custom:hover {
  background: var(--bg-hover);
}

.model-select-arrow {
  font-size: 16px;
  color: var(--text-secondary);
  transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

.model-select-custom.open .model-select-arrow {
  transform: rotate(180deg);
}

/* ==================== 模型选择下拉菜单==================== */
.model-modal {
  display: none;
}

.model-dropdown-menu {
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  /* Positioned on right to align with send button */
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  overflow: hidden;
  display: none;
  max-height: 70vh;
  overflow-y: auto;
  /* 内边距使选项与边框保持距离 */
  padding: 6px;
}

.model-dropdown-menu.active {
  display: block;
  animation: dropdownSlideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* 关闭动画类 */
.model-dropdown-menu.closing {
  display: block;
  animation: dropdownSlideDown 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes dropdownSlideUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes dropdownSlideDown {
  from {
    opacity: 1;
    transform: translateY(0);
  }

  to {
    opacity: 0;
    transform: translateY(10px);
  }
}

.model-menu-item {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: background 0.2s, border-radius 0.2s;
  position: relative;
  /* 圆角矩形效果 */
  border-radius: 8px;
  margin: 2px 0;
}

.model-menu-item:hover {
  background: var(--bg-hover);
  border-radius: 8px;
}

.model-menu-item.selected {
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.model-menu-item.selected::after {
  content: '✓';
  position: absolute;
  right: 16px;
  color: var(--accent-color);
  font-size: 16px;
  font-weight: bold;
}

.model-menu-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.model-menu-item.selected .model-menu-icon {
  color: var(--accent-color);
}

.model-menu-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.model-menu-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.model-menu-description {
  font-size: 11px;
  color: var(--text-secondary);
}

/* 模型标签徽章样式 */
.model-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}

.model-badge.free {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: #fff;
}

.model-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 4px 0;
  /* 分割线与菜单项对齐 */
}

/* 全部模型展开区域 */
.all-models-section {
  background: var(--bg-primary);
}

/* 全部模型箭头图标 */
.model-menu-arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

.model-menu-item[data-toggle="all-models"].expanded .model-menu-arrow {
  transform: rotate(180deg);
}

.model-option {
  display: none;
}

.model-option:hover {
  background: var(--bg-hover);
}

.model-option.selected {
  background: var(--bg-tertiary);
  color: var(--accent-color);
  font-weight: 600;
}

/* 输入行只包含textarea */
.input-row {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.message-input {
  flex: 1;
  min-height: 24px;
  max-height: 200px;
  padding: 0;
  border: none;
  background: transparent;
  font-size: 16px;
  /* iOS 防止自动缩放，最小必须 16px */
  color: var(--text-primary);
  resize: none;
  outline: none;
  font-family: inherit;
  line-height: 1.5;
  transition: font-size 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.message-input::placeholder {
  color: var(--text-tertiary);
}

.send-btn,
.stop-btn {
  width: 32px;
  height: 32px;
  border: none;
  /* 圆角顺序：左上 右上 右下 左下 */
  border-radius: 50px 50px 50px 50px;
  /* 发送/停止按钮 */
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  background: var(--accent-color);
  color: var(--bg-primary);
}

.send-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background: var(--text-tertiary);
}

.stop-btn {
  background: var(--error-color);
  color: white;
}

.stop-btn:hover {
  background: #DC2626;
}

.send-btn .material-symbols-outlined,
.stop-btn .material-symbols-outlined {
  font-size: 18px;
}

/* ==================== 设置面板 ==================== */
.settings-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--spacing-lg);
  animation: fadeIn 0.2s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.settings-modal.active {
  display: flex;
}

.settings-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.settings-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.settings-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.close-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all 0.2s;
}

.close-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.settings-body {
  padding: var(--spacing-xl);
}

.settings-group {
  margin-bottom: var(--spacing-xl);
}

.settings-group-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.setting-item {
  margin-bottom: var(--spacing-lg);
}

.setting-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.setting-description {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.setting-input,
.system-prompt-input {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 16px;
  /* iOS 防止自动缩放 */
  resize: vertical;
  min-height: 100px;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.setting-input:focus {
  outline: none;
  border-color: var(--text-tertiary);
  box-shadow: 0 0 0 1px var(--text-tertiary);
}

.system-prompt-input:focus {
  border-color: var(--accent-color);
}

/* 高级选项样式 */
.advanced-options-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  user-select: none;
}

.advanced-options-icon {
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.advanced-options-header.expanded .advanced-options-icon {
  transform: rotate(180deg);
}

.advanced-options-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.advanced-options-content.expanded {
  max-height: 1000px;
  /* 足够大以容纳内容 */
  opacity: 1;
  margin-top: var(--spacing-sm);
}

.setting-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 12px;
}

.slider-container {
  padding: var(--spacing-md) 0;
}

.slider-input {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--border-color);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--accent-color);
  cursor: pointer;
  transition: all 0.2s;
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-input::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--accent-color);
  cursor: pointer;
}

.slider-value {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-left: var(--spacing-sm);
}

.settings-footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

.btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent-color);
  color: var(--bg-primary);
}

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

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

.btn-secondary:hover {
  background: var(--bg-hover);
}

.btn-danger {
  background: transparent;
  color: var(--error-color);
  border: 1px solid var(--error-color);
}

.btn-danger:hover {
  background: var(--error-color);
  color: white;
}

/* ==================== 移动端键盘优化 CSS ==================== */
/* iOS 防止橡皮筋效果 */
.prevent-bounce {
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
}

/* Android 防止过度滚动 */
.no-overscroll {
  overscroll-behavior-y: contain;
}

/* 平滑滚动 */
@media (prefers-reduced-motion: no-preference) {
  .smooth-scroll {
    scroll-behavior: smooth;
  }
}

/* 底部固定输入框容器优化 */
.fixed-input-container {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  transform: translateY(0);
}

/* iOS 安全区域适配 */
@supports (padding: max(0px)) {
  body {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* 确保输入框在移动端有足够的高度 */
@media (max-width: 768px) {
  .message-input {
    font-size: 16px !important;
    /* 强制 16px 防止缩放 */
  }
}

/* ==================== 拖拽上传覆盖层 ==================== */
.drop-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  pointer-events: none;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.drop-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.drop-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 48px 64px;
  background: var(--bg-secondary);
  border: 3px dashed var(--color-saturn-yellow);
  border-radius: 24px;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 500;
  text-align: center;
}

.drop-overlay-content svg {
  color: var(--color-saturn-yellow);
  animation: drop-icon-bounce 1s ease-in-out infinite;
}

@keyframes drop-icon-bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

/* Toast 通知样式 */
.toast-notification {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  z-index: 10001;
  opacity: 0;
  transition: all 0.3s ease;
}

.toast-notification.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==================== 登录/注册界面 ==================== */
.auth-container {
  position: fixed;
  top: 0;
}



html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  /* 禁止body滚动 */
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  position: fixed;
  /* 防止iOS橡皮筋效果和意外滚动 */
}

.app-container {
  display: flex;
  width: 100%;
  height: 100%;
  /* 将由JS动态调整 */
  background-color: transparent;
  position: relative;
  overflow: hidden;
  /* 确保内部滚动不影响整体 */
}

.auth-container {
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.auth-container.active {
  display: flex;
}

.auth-box {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin: var(--spacing-lg);
  position: relative;
}

/* 登录界面语言切换按钮 */
.auth-lang-btn {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(128, 128, 128, 0.2);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-lang-btn:hover {
  background: rgba(128, 128, 128, 0.4);
  transform: scale(1.05);
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.auth-logo-text {
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.auth-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.auth-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  padding: var(--spacing-md);
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-primary);
  transition: all 0.2s;
  font-family: inherit;
}

.form-input:focus {
  outline: none;
  border-color: var(--text-tertiary);
  box-shadow: 0 0 0 1px var(--text-tertiary);
}

.auth-btn {
  padding: var(--spacing-md);
  background: var(--accent-color);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: var(--spacing-md);
}

.auth-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.auth-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-switch {
  text-align: center;
  margin-top: var(--spacing-lg);
  font-size: 13px;
  color: var(--text-secondary);
}

.auth-link {
  color: var(--accent-color);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s;
}

.auth-link:hover {
  opacity: 0.8;
}

.error-message {
  padding: var(--spacing-md);
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--error-color);
  border-radius: var(--radius-sm);
  color: var(--error-color);
  font-size: 13px;
  display: none;
}

.error-message.show {
  display: block;
}

/* ==================== Apple风格渐进式登录 ==================== */
/* 隐藏状态 - 初始隐藏的元素 */
.auth-step-hidden {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 0.4s ease, max-height 0.4s ease, margin 0.4s ease;
  margin-top: 0;
  margin-bottom: 0;
}

/* 显示状态 - 渐入动画 */
.auth-step-visible {
  opacity: 1;
  max-height: 200px;
  pointer-events: auto;
  margin-top: var(--spacing-lg);
  margin-bottom: 0;
}

/* 登录界面底部区域 */
.auth-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.auth-footer .auth-switch {
  margin: 0;
  text-align: left;
}

/* 行内语言切换按钮 */
.auth-lang-btn-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  background: transparent;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-lang-btn-inline:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-dark);
}

/* 邮箱输入时的焦点提示 */
#authEmail:focus+.email-hint,
#authEmail:not(:placeholder-shown)+.email-hint {
  display: none;
}

/* 提交按钮特定样式 */
#submitStep.auth-step-visible .auth-btn {
  width: 100%;
}

/* ==================== 移动端适配与侧边栏滑动 ==================== */
.mobile-header {
  display: none;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

/* ==================== 顶栏控制按钮 ==================== */
.header-controls {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.control-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.control-btn:hover {
  background: var(--bg-hover);
}

.hamburger-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.hamburger-btn:hover {
  background: var(--bg-hover);
}

.mobile-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: calc(var(--z-sidebar) - 1);
}

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

@media (max-width: 768px) {
  :root {
    --sidebar-width: 85%;
    --spacing-lg: 14px;
    --spacing-xl: 20px;
  }

  .app-container {
    display: block;
    position: relative;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    max-width: 320px;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-sidebar);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    margin: 0;
  }

  .mobile-header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
  }

  /* 移动端边缘羽化效果 - 调整位置避开顶栏 */
  .main-content::before {
    top: var(--header-height);
    /* 从顶栏下方开始 */
    height: 50px;
  }

  .chat-edge-blur-top {
    top: var(--header-height);
    /* 从顶栏下方开始 */
  }

  .chat-container {
    padding-top: calc(var(--header-height) + var(--spacing-lg));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    height: 100%;
  }

  .input-area {
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
  }

  .input-toolbar {
    flex-wrap: wrap;
  }

  .toolbar-btn {
    width: 34px;
    /* 圆形按钮 */
    height: 34px;
    padding: 0;
    font-size: 11px;
  }

  .model-selector {
    max-width: 140px;
  }

  .welcome-icon .material-symbols-outlined {
    font-size: 48px !important;
  }

  .welcome-title {
    font-size: 22px;
  }

  .welcome-subtitle {
    font-size: 13px;
  }

  .message {
    margin-bottom: var(--spacing-lg);
  }

  .message-avatar {
    width: 28px;
    height: 28px;
  }

  .settings-content {
    margin: 0;
    border-radius: 0;
    max-height: 100vh;
    width: 100%;
  }

  .auth-box {
    margin: var(--spacing-md);
    max-width: 100%;
  }

  /* ==================== Chain of Thought UI 移动端优化 ==================== */
  .thinking-indicator {
    padding-left: 0;
    /* ✅ 修复：移除负margin，避免遮挡用户消息 */
    margin-top: 0;
  }

  .thinking-header {
    padding-left: 14px;
    /* 移动端与消息文本对齐 */
    min-height: 28px;
  }

  .thinking-preview {
    min-width: 100px;
    max-width: 200px;
    padding: 3px 10px;
  }

  .thinking-preview-text {
    font-size: 12px;
  }

  .thinking-toggle-btn {
    padding: 3px 8px;
  }

  .thinking-toggle-btn .toggle-text {
    font-size: 11px;
  }

  .thinking-toggle-btn.icon-only {
    width: 24px;
    height: 24px;
  }

  .thinking-line {
    left: 14px;
    /* 移动端头像中心 */
    top: 28px;
  }

  .thinking-content {
    padding: 0;
    padding-left: 20px;
    /* 移动端在竖线右侧 */
    font-size: 12px;
    line-height: 1.6;
  }

  /* ==================== 移动端文本换行优化 ==================== */
  .messages-list {
    max-width: 100%;
    padding: 0;
  }

  .message-text {
    max-width: 100%;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
  }

  /* 内联代码在移动端换行 */
  .message-text code {
    word-break: break-all;
    white-space: pre-wrap;
  }

  /* 代码块在移动端处理 */
  .message-text pre {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: pre-wrap;
    word-wrap: break-word;
  }

  /* 表格在移动端可滚动 */
  .message-text table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* 链接在移动端换行 */
  .message-text a {
    word-break: break-all;
  }
}

.loading {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

/* PC 端黑屏问题修复 */
@media (min-width: 769px) {


  .welcome-screen:not(.hidden) {
    display: flex !important;
  }

  #welcomeScreen:not(.hidden) {
    display: flex !important;
  }
}

*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

*::-webkit-scrollbar-thumb:hover {
  background: var(--border-dark);
}

/* ==================== 思考预算控制 ==================== */
.thinking-controls {
  display: flex;
  gap: 4px;
  align-items: center;
}

.thinking-budget-modal {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  z-index: 200;
  animation: budgetSlideUp 0.2s ease-out;
}

@keyframes budgetSlideUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.thinking-budget-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  min-width: 280px;
}

.thinking-budget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.thinking-budget-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.thinking-budget-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-color);
}

.thinking-budget-description {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.thinking-budget-slider-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.thinking-budget-label {
  font-size: 11px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.thinking-budget-slider {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: var(--border-color);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.thinking-budget-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  background: var(--accent-color);
  cursor: pointer;
  transition: all 0.2s;
}

.thinking-budget-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.thinking-budget-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--accent-color);
  cursor: pointer;
}

/* ==================== 推理按钮特殊圆角 ==================== */
#thinkingBtn {
  /* 圆角顺序：左上 右上 右下 左下 */
  border-radius: 50px 50px 50px 50px;
  /* 推理按钮 */
}

/* ==================== 对话索引导航器 ==================== */
.chat-index-navigator {
  position: fixed;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 8px 12px;
}

.chat-index-navigator.visible {
  opacity: 1;
  pointer-events: auto;
}

.chat-index-navigator.hidden {
  opacity: 0;
  pointer-events: none;
}

/* 上下导航按钮 - 默认隐藏且透明 */
.chat-index-nav-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  position: relative;
  opacity: 0;
  pointer-events: none;
}

/* 悬浮整个导航区域时显示箭头 */
.chat-index-navigator:hover .chat-index-nav-btn {
  opacity: 1;
  pointer-events: auto;
}

/* 悬浮箭头按钮时显示圆形背景 */
.chat-index-nav-btn:hover {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.chat-index-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.chat-index-nav-btn:disabled:hover {
  background: transparent;
  border: none;
}

.chat-index-nav-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* 时间轴容器 */
.chat-index-timeline {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  /* 横线右对齐 */
  gap: 6px;
  padding: 8px 0;
  max-height: 60vh;
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.chat-index-timeline::-webkit-scrollbar {
  display: none;
}

/* 时间轴横线 - 三档宽度 */
.chat-index-line {
  width: 16px;
  /* 默认中档（AI） */
  height: 2px;
  background: var(--text-tertiary);
  border-radius: 1px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

/* 用户消息 - 短线 */
.chat-index-line.user-line {
  width: 8px;
}

/* AI消息 - 中线 */
.chat-index-line.assistant-line {
  width: 16px;
}

/* 增大热区：用伪元素扩展点击区域 */
.chat-index-line::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -12px;
  right: -12px;
  bottom: -10px;
  /* 透明扩展区域 */
}

/* 悬浮/选中/当前 - 长线（最长档） */
.chat-index-line:hover,
.chat-index-line.active,
.chat-index-line.touching {
  width: 28px;
  background: var(--text-primary);
}

/* 悬浮提示框 */
.chat-index-tooltip {
  position: fixed;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 400;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  pointer-events: none;
  max-width: 280px;
  white-space: normal;
  word-wrap: break-word;
  line-height: 1.4;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.chat-index-tooltip.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 按钮提示 */
.chat-index-nav-tooltip {
  position: fixed;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.chat-index-nav-tooltip.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 响应式 - 移动端优化 */
@media (max-width: 768px) {
  .chat-index-navigator {
    right: 4px;
    padding: 4px 8px;
    gap: 2px;
  }

  .chat-index-nav-btn {
    width: 28px;
    height: 28px;
  }

  .chat-index-nav-btn svg {
    width: 16px;
    height: 16px;
  }

  .chat-index-timeline {
    gap: 4px;
    padding: 4px 0;
  }

  .chat-index-line {
    height: 2px;
  }

  .chat-index-line.user-line {
    width: 6px;
  }

  .chat-index-line.assistant-line {
    width: 12px;
  }

  .chat-index-line:hover,
  .chat-index-line.active,
  .chat-index-line.touching {
    width: 20px;
  }
}

/* 浅色主题适配 */
[data-theme="light"] .chat-index-nav-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

[data-theme="light"] .chat-index-tooltip,
[data-theme="light"] .chat-index-nav-tooltip {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

/* ==================== 更多菜单 ==================== */
.more-menu-container {
  position: relative;
}

.more-menu {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  overflow: hidden;
  display: none;
  padding: 6px;
  animation: moreMenuSlideUp 0.2s ease-out;
}

.more-menu.active {
  display: block;
}

@keyframes moreMenuSlideUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.more-menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text-primary);
  font-size: 14px;
}

.more-menu-item:hover {
  background: var(--bg-hover);
}

.more-menu-item-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.more-menu-item-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.more-menu-item-text {
  flex: 1;
}

.more-menu-item-toggle {
  width: 36px;
  height: 20px;
  background: var(--border-color);
  border-radius: 10px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.more-menu-item-toggle.active {
  background: var(--accent-color);
}

.more-menu-item-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--text-primary);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.more-menu-item-toggle.active::after {
  transform: translateX(16px);
  background: var(--bg-primary);
}

/* 浅色主题下开关圆点颜色适配 */
[data-theme="light"] .more-menu-item-toggle::after {
  background: var(--text-primary);
}

[data-theme="light"] .more-menu-item-toggle.active::after {
  background: var(--bg-primary);
}

.more-menu-divider {
  height: 1px;
  background: var(--border-dark);
  margin: 4px 0;
}

/* ==================== 工具栏按钮悬浮提示 ==================== */

.tooltip-popup {
  position: fixed;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  pointer-events: none;
  animation: tooltipFadeInOut 1s ease-out forwards;
}

@keyframes tooltipFadeInOut {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }

  10% {
    opacity: 1;
    transform: translateY(0);
  }

  90% {
    opacity: 1;
    transform: translateY(0);
  }

}

/* ==================== AI Smooth Fusion 流式动画 ==================== */

/* Fusion Reveal 动画：每个新字符的入场效果
       0.8s持续时间 vs 12ms生成间隔 = 多个字符同时执行动画
       创造"液体流动"般的视觉连续性
    */
@keyframes fusionReveal {
  0% {
    opacity: 0;
    filter: blur(4px);
    color: var(--fusion-highlight-color, #a5b4fc);
  }

  100% {
    opacity: 1;
    filter: blur(0);
    color: inherit;
  }
}

.streaming-char {
  display: inline;
  animation: fusionReveal 0.25s ease-out forwards;
}

/* 浅色主题适配 */
[data-theme="light"] .streaming-char {
  --fusion-highlight-color: #6366f1;
}

/* Mermaid Inline Preview & Loading */
.mermaid-inline-wrapper {
  margin: var(--spacing-md) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.mermaid-inline-wrapper.rendered {
  background: transparent;
  border: none;
}

.mermaid-preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: var(--spacing-md);
}

.mermaid-preview-container svg {
  max-width: 100%;
  height: auto;
}

.mermaid-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  color: var(--text-tertiary);
  font-size: 13px;
}

.mermaid-loading span {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 0.4;
  }

  50% {
    opacity: 1;
  }
}

/* ==================== Mermaid 内联工具栏 ==================== */
.mermaid-container {
  position: relative;
}

.mermaid-toolbar {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  z-index: 10;
}

.mermaid-container:hover .mermaid-toolbar {
  opacity: 1;
  visibility: visible;
}

.mermaid-toolbar button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s ease;
}

.mermaid-toolbar button:hover {
  background: rgba(255, 255, 255, 0.2);
}

.mermaid-toolbar button svg {
  width: 16px;
  height: 16px;
}

/* ==================== Mermaid 全屏模态框 ==================== */
.mermaid-fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.95);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mermaid-fullscreen-modal.active {
  opacity: 1;
  visibility: visible;
}

/* 全屏顶部工具栏 */
.mermaid-fullscreen-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: rgba(30, 30, 30, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.mermaid-fullscreen-toolbar-left,
.mermaid-fullscreen-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mermaid-fullscreen-toolbar-center {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mermaid-fullscreen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mermaid-fullscreen-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.mermaid-fullscreen-btn:active {
  transform: scale(0.95);
}

.mermaid-fullscreen-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  stroke: currentColor;
}

.mermaid-fullscreen-zoom-level {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 500;
  min-width: 50px;
  text-align: center;
}

/* 全屏内容区域 */
.mermaid-fullscreen-content {
  flex: 1;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mermaid-fullscreen-wrapper {
  position: absolute;
  transform-origin: center center;
  cursor: grab;
  transition: transform 0.1s ease;
  padding: 40px;
}

.mermaid-fullscreen-wrapper.dragging {
  cursor: grabbing;
  transition: none;
}

.mermaid-fullscreen-wrapper svg {
  max-width: none;
  max-height: none;
}

/* 全屏代码视图 */
.mermaid-fullscreen-code {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #1e1e1e;
  padding: 20px;
  overflow: auto;
  display: none;
}

.mermaid-fullscreen-code.active {
  display: block;
}

.mermaid-fullscreen-code pre {
  margin: 0;
  color: #9cdcfe;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
}

/* 响应式 - 移动端 */
@media (max-width: 768px) {
  .mermaid-fullscreen-toolbar {
    padding: 10px 12px;
  }

  .mermaid-fullscreen-btn {
    width: 36px;
    height: 36px;
  }

  .mermaid-fullscreen-btn svg {
    width: 18px;
    height: 18px;
  }

  .mermaid-fullscreen-zoom-level {
    font-size: 12px;
    min-width: 40px;
  }

  .mermaid-fullscreen-wrapper {
    padding: 20px;
  }

  .mermaid-fullscreen-code {
    padding: 12px;
  }

  .mermaid-fullscreen-code pre {
    font-size: 12px;
  }
}

/* ==================== 管理员与会员面板样式 ==================== */
/* ==================== 管理员模态框通用样式 ==================== */
.admin-modal-overlay,
.admin-panel-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.admin-modal-overlay.active,
.admin-panel-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ==================== 管理员登录框 ==================== */
.admin-login-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  width: 90%;
  max-width: 400px;
  position: relative;
}

.admin-login-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.admin-login-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.admin-input-group {
  margin-bottom: 16px;
}

.admin-input-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.admin-input-group input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s;
}

.admin-input-group input:focus {
  border-color: var(--color-saturn-yellow);
}

.admin-login-error {
  color: #ff5252;
  font-size: 13px;
  min-height: 20px;
  margin-bottom: 8px;
}

.admin-login-btn {
  width: 100%;
  padding: 12px;
  background: var(--color-saturn-yellow);
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.admin-login-btn:hover {
  opacity: 0.9;
}

.admin-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  transition: color 0.2s;
}

.admin-close-btn:hover {
  color: var(--text-primary);
}

.admin-close-btn svg {
  width: 20px;
  height: 20px;
}

/* ==================== 管理面板 ==================== */
.admin-panel {
  background: var(--bg-primary);
  width: 95%;
  max-width: 1200px;
  height: 90vh;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.admin-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.admin-panel-header h1 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.admin-panel-tabs {
  display: flex;
  gap: 4px;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.admin-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.admin-tab:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.admin-tab.active {
  background: var(--color-saturn-yellow);
  color: #000;
}

.admin-tab svg {
  width: 18px;
  height: 18px;
}

.admin-panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.admin-tab-content {
  display: none;
}

.admin-tab-content.active {
  display: block;
}

/* ==================== 统计卡片 ==================== */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-stat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.admin-stat-card.loading {
  min-height: 80px;
}

.admin-stat-skeleton {
  width: 100%;
  height: 40px;
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}

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

  100% {
    background-position: -200% 0;
  }
}

.admin-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.admin-stat-icon svg {
  width: 24px;
  height: 24px;
}

.admin-stat-icon.users {
  background: rgba(33, 150, 243, 0.15);
  color: #2196F3;
}

.admin-stat-icon.sessions {
  background: rgba(76, 175, 80, 0.15);
  color: #4CAF50;
}

.admin-stat-icon.messages {
  background: rgba(156, 39, 176, 0.15);
  color: #9C27B0;
}

.admin-stat-icon.today {
  background: rgba(245, 213, 71, 0.15);
  color: var(--color-saturn-yellow);
}

.admin-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.admin-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== 图表区域 ==================== */
.admin-charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .admin-charts-row {
    grid-template-columns: 1fr;
  }
}

.admin-chart-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}

.admin-chart-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px 0;
}

.admin-chart {
  min-height: 150px;
}

.admin-no-data {
  color: var(--text-tertiary);
  text-align: center;
  padding: 40px;
}

/* 条形图 */
.admin-bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 120px;
}

.admin-bar-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
}

.admin-bar {
  width: 100%;
  background: var(--color-saturn-yellow);
  border-radius: 4px 4px 0 0;
  min-height: 2px;
  transition: height 0.3s;
}

.admin-bar-label {
  font-size: 10px;
  color: var(--text-tertiary);
  margin-top: 4px;
  transform: rotate(-45deg);
  white-space: nowrap;
}

/* 模型使用列表 */
.admin-model-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.admin-model-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-model-bar-bg {
  flex: 1;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.admin-model-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
}

.admin-model-name {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 100px;
}

.admin-model-count {
  font-size: 12px;
  color: var(--text-tertiary);
  min-width: 80px;
  text-align: right;
}

/* 活跃用户排行 */
.admin-top-users-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-top-user-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-top-user-rank {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-saturn-yellow);
  min-width: 30px;
}

.admin-top-user-name {
  font-size: 13px;
  color: var(--text-primary);
  min-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-top-user-bar-bg {
  flex: 1;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.admin-top-user-bar {
  height: 100%;
  background: var(--color-saturn-yellow);
  border-radius: 3px;
}

.admin-top-user-count {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 40px;
  text-align: right;
}

/* ==================== 表格 ==================== */
.admin-table-container {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.admin-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-secondary);
}

.admin-table td {
  color: var(--text-primary);
}

.admin-table tr:hover {
  background: var(--bg-secondary);
}

.admin-msg-content {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-session-id {
  font-family: monospace;
  font-size: 11px;
  color: var(--text-tertiary);
}

.admin-action-btn {
  padding: 4px 10px;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  margin-right: 4px;
}

.admin-action-btn.view {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.admin-action-btn.delete {
  background: rgba(255, 82, 82, 0.15);
  color: #ff5252;
}

.admin-action-btn:hover {
  opacity: 0.8;
}

.admin-back-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  margin: 12px 0;
  font-size: 13px;
}

/* ==================== 搜索栏 ==================== */
.admin-search-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.admin-search-bar input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
}

.admin-search-bar input:focus {
  border-color: var(--color-saturn-yellow);
}

.admin-search-bar button {
  padding: 10px 20px;
  background: var(--color-saturn-yellow);
  color: #000;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

/* ==================== 会员徽章 ==================== */
.membership-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.membership-badge.free {
  background: rgba(150, 150, 150, 0.2);
  color: #aaa;
}

.membership-badge.pro {
  background: rgba(33, 150, 243, 0.2);
  color: #2196F3;
}

.membership-badge.max {
  background: rgba(245, 213, 71, 0.2);
  color: var(--color-saturn-yellow);
}

/* ==================== 用户详情弹窗 ==================== */
.user-detail-modal {
  z-index: 10002;
}

.user-detail-container {
  background: var(--bg-primary);
  width: 95%;
  max-width: 1100px;
  height: 85vh;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.user-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.user-detail-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.user-detail-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.user-detail-loading,
.user-detail-error {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 16px;
  color: var(--text-secondary);
}

.user-detail-error {
  color: var(--error-color);
}

.user-detail-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 用户信息卡片 */
.user-info-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}

.user-info-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px 0;
}

.user-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.user-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.user-info-item .label {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-info-item .value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

/* 会话列表和消息区域布局 */
.user-sessions-area {
  display: flex;
  gap: 16px;
  flex: 1;
  min-height: 400px;
}

.user-sessions-list {
  width: 280px;
  flex-shrink: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-sessions-list h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 14px 16px;
  margin: 0;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.sessions-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.no-sessions {
  padding: 20px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.ud-session-item {
  padding: 12px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 4px;
}

.ud-session-item:hover {
  background: var(--bg-hover);
}

.ud-session-item.active {
  background: var(--color-saturn-yellow);
  color: #000;
}

.ud-session-item.active .ud-session-meta {
  color: rgba(0, 0, 0, 0.6);
}

.ud-session-title {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ud-session-meta {
  font-size: 11px;
  color: var(--text-tertiary);
  display: flex;
  gap: 10px;
}

/* 消息查看区域 - 限定在用户详情弹窗内 */
.user-detail-modal .user-messages-area {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-detail-modal .ud-messages-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  gap: 12px;
}

.user-detail-modal .ud-messages-placeholder svg {
  opacity: 0.3;
}

.user-detail-modal .ud-messages-placeholder p {
  margin: 0;
  font-size: 14px;
}

.user-detail-modal .ud-messages-loading,
.user-detail-modal .ud-messages-error {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 14px;
  color: var(--text-secondary);
}

.user-detail-modal .ud-messages-error {
  color: var(--error-color);
}

.user-detail-modal .ud-messages-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.user-detail-modal .ud-messages-header h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.user-detail-modal .ud-messages-count {
  font-size: 12px;
  color: var(--text-tertiary);
}

.user-detail-modal .ud-messages-list {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.user-detail-modal .ud-message-item {
  margin-bottom: 16px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.user-detail-modal .ud-message-item.user-msg {
  background: var(--bg-tertiary);
}

.user-detail-modal .ud-message-item.ai-msg {
  background: var(--bg-primary);
}

.user-detail-modal .ud-message-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
}

.user-detail-modal .ud-message-role {
  font-weight: 600;
  color: var(--text-primary);
}

.user-detail-modal .ud-message-time {
  color: var(--text-tertiary);
}

.user-detail-modal .ud-message-model {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--bg-hover);
  border-radius: 4px;
  color: var(--text-secondary);
}

.user-detail-modal .ud-message-content {
  padding: 12px 14px;
  cursor: pointer;
  max-height: 200px;
  overflow-y: auto;
  transition: max-height 0.3s ease;
}

.user-detail-modal .ud-message-content.expanded {
  max-height: none;
}

.user-detail-modal .ud-message-content pre {
  margin: 0;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-primary);
}

.user-detail-modal .ud-message-reasoning {
  padding: 8px 14px;
  border-top: 1px dashed var(--border-color);
}

.user-detail-modal .ud-message-reasoning summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 0;
}

.user-detail-modal .ud-message-reasoning pre {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
}

/* 用户详情弹窗响应式布局 */
@media (max-width: 768px) {
  .user-detail-modal .user-detail-container {
    width: 100%;
    height: 100vh;
    border-radius: 0;
  }

  .user-detail-modal .user-sessions-area {
    flex-direction: column;
  }

  .user-detail-modal .user-sessions-list {
    width: 100%;
    max-height: 200px;
  }

  .user-detail-modal .user-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==================== 会员计划弹窗 ==================== */
.membership-plans-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.membership-plans-overlay.active {
  opacity: 1;
  visibility: visible;
}

.membership-plans-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 90%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.membership-plans-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.membership-plans-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.membership-plans-content {
  padding: 24px;
}

.membership-plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

@media (max-width: 600px) {
  .membership-plans-grid {
    grid-template-columns: 1fr;
  }
}

.membership-plan-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: all 0.2s;
}

.membership-plan-card:hover {
  border-color: var(--color-saturn-yellow);
}

.membership-plan-card.current {
  border-color: var(--color-saturn-yellow);
  box-shadow: 0 0 0 1px var(--color-saturn-yellow);
}

.membership-plan-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.membership-plan-card.free .membership-plan-name {
  color: #aaa;
}

.membership-plan-card.pro .membership-plan-name {
  color: #2196F3;
}

.membership-plan-card.max .membership-plan-name {
  color: var(--color-saturn-yellow);
}

.membership-plan-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.membership-plan-price small {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 400;
}

.membership-plan-points {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.membership-plan-features {
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.membership-divider {
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
}

.membership-extra-section {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.membership-extra-section h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.membership-extra-section p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

.membership-contact {
  text-align: center;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 12px;
}

.membership-contact a {
  color: var(--color-saturn-yellow);
  text-decoration: none;
}

/* ==================== 用户设置面板会员状态 ==================== */
.settings-membership-section {
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.settings-membership-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.settings-membership-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 6px;
  font-weight: 600;
}

.settings-membership-badge.free {
  background: rgba(150, 150, 150, 0.15);
  color: #aaa;
}

.settings-membership-badge.pro {
  background: rgba(33, 150, 243, 0.15);
  color: #2196F3;
}

.settings-membership-badge.max {
  background: rgba(245, 213, 71, 0.15);
  color: var(--color-saturn-yellow);
}

.settings-upgrade-link {
  font-size: 12px;
  color: var(--color-saturn-yellow);
  text-decoration: none;
  cursor: pointer;
}

.settings-upgrade-link:hover {
  text-decoration: underline;
}

.settings-points-display {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-primary);
}

.settings-points-display .points-icon {
  color: var(--color-saturn-yellow);
}

.settings-checkin-btn {
  padding: 8px 16px;
  background: var(--color-saturn-yellow);
  color: #000;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
}

.settings-checkin-btn:disabled {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

.settings-created-at {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* ==================== 画布右键菜单动画 ==================== */
@keyframes menuFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-5px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.canvas-context-menu,
.node-context-menu,
.edge-context-menu,
.edge-label-menu {
  animation: menuFadeIn 0.15s ease-out;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.canvas-context-menu .context-menu-item svg,
.node-context-menu .context-menu-item svg {
  opacity: 0.8;
  flex-shrink: 0;
}

.canvas-context-menu .context-menu-item:hover svg,
.node-context-menu .context-menu-item:hover svg {
  opacity: 1;
}

/* 画布拖拽悬停效果 */
.chatflow-canvas-container.drag-over {
  background: rgba(255, 193, 7, 0.05);
  outline: 2px dashed var(--color-saturn-yellow);
  outline-offset: -4px;
}

/* 文本节点样式增强 */
.canvas-node[data-node-type="text"] .canvas-node-bg {
  stroke: var(--color-saturn-yellow);
  stroke-width: 2;
}

/* 拖拽消息时的样式 */
.chatflow-message.dragging {
  opacity: 0.5;
  transform: scale(0.98);
}

/* ==================== ChatFlow iframe 模式样式 ==================== */
/* 
body.chatflow-iframe-mode .sidebar {
  display: none !important;
} 
*/

/* 
body.chatflow-iframe-mode .main-content {
  margin-left: 0;
  width: 100%;
}
*/

/* iframe 内文本选择样式 */
body.chatflow-iframe-mode .message-content {
  user-select: text;
}

body.chatflow-iframe-mode .message-content::selection {
  background: var(--color-saturn-yellow);
  color: #000;
}