/* Hot100 AI 助教 — 笔记型阅读面板 v1.5.9 */

.cf-assistant-root {
  --assistant-font-xs: 12px;
  --assistant-font-sm: 13px;
  --assistant-font-body: 14px;
  --assistant-font-body-lg: 15px;
  --assistant-font-h3: 16px;
  --assistant-font-h2: 18px;
  --assistant-font-title: 15px;

  --assistant-text-primary: #1f2328;
  --assistant-text-secondary: #57606a;
  --assistant-text-tertiary: #6e7781;

  --assistant-surface: #ffffff;
  --assistant-surface-muted: #f6f8fa;

  --assistant-border: #d8dee4;
  --assistant-border-soft: #eaeef2;

  --assistant-accent: #0969da;
  --assistant-accent-hover: #0550ae;

  --assistant-scroll-thumb: rgba(31, 35, 40, 0.22);
  --assistant-scroll-thumb-hover: rgba(31, 35, 40, 0.35);

  --assistant-pad-x: 12px;
  --assistant-control-h: 26px;
  --assistant-space-1: 4px;
  --assistant-space-2: 8px;
  --assistant-space-3: 12px;

  position: fixed;
  z-index: 12050;
  right: 24px;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
  font-family:
    'Noto Sans SC',
    'PingFang SC',
    'Microsoft YaHei',
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  color: var(--assistant-text-primary);
}

.cf-assistant-dock {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  transition: opacity 0.18s ease;
}

.cf-assistant-dock #scrollTopBtn.cf-assistant-dock-scroll {
  position: static;
  bottom: auto;
  right: auto;
  flex-shrink: 0;
}

.cf-assistant-launcher {
  --launcher-accent-start: #218bff;
  --launcher-accent-end: #0969da;
  height: 44px;
  min-width: 0;
  width: auto;
  padding: 0 16px 0 8px;
  gap: 10px;
  border: 1px solid rgba(9, 105, 218, 0.14);
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  color: var(--assistant-text-primary);
  box-shadow:
    0 4px 18px rgba(31, 35, 40, 0.1),
    0 1px 2px rgba(31, 35, 40, 0.06);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.cf-assistant-launcher-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--assistant-accent);
  background: rgba(9, 105, 218, 0.08);
  font-size: 15px;
  line-height: 1;
}

.cf-assistant-launcher-icon i {
  display: block;
  line-height: 1;
}

.cf-assistant-launcher-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.cf-assistant-launcher:hover {
  transform: translateY(-2px);
  border-color: rgba(9, 105, 218, 0.32);
  box-shadow:
    0 10px 28px rgba(9, 105, 218, 0.16),
    0 2px 6px rgba(31, 35, 40, 0.08);
}

.cf-assistant-launcher--active {
  background: linear-gradient(180deg, #f0f7ff 0%, #e8f2ff 100%);
  border-color: rgba(9, 105, 218, 0.45);
  color: var(--assistant-accent);
  box-shadow:
    0 8px 24px rgba(9, 105, 218, 0.18),
    0 2px 4px rgba(9, 105, 218, 0.08);
}

.cf-assistant-launcher--active .cf-assistant-launcher-icon {
  background: rgba(9, 105, 218, 0.14);
}

.cf-assistant-launcher:focus-visible {
  outline: 2px solid var(--assistant-accent);
  outline-offset: 3px;
}

/* ── Dock 胶囊：关闭 / 恢复入口 ── */

.cf-assistant-dock-close {
  width: 24px;
  height: 24px;
  border: 1px solid rgba(31, 35, 40, 0.12);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--assistant-text-secondary);
  font-size: 12px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    background 0.18s ease,
    color 0.18s ease;
  pointer-events: none;
  flex-shrink: 0;
}

.cf-assistant-dock:hover .cf-assistant-dock-close,
.cf-assistant-dock:focus-within .cf-assistant-dock-close {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.cf-assistant-dock-close:hover {
  background: rgba(31, 35, 40, 0.08);
  color: var(--assistant-text-primary);
}

@media (hover: none) {
  .cf-assistant-dock-close {
    opacity: 0.55;
    transform: scale(1);
    pointer-events: auto;
  }
}

.cf-assistant-restore {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(9, 105, 218, 0.22);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--assistant-accent);
  font-size: 16px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.55;
  box-shadow: 0 4px 18px rgba(31, 35, 40, 0.12);
  flex-shrink: 0;
  animation: cf-assistant-restore-in 0.18s ease;
}

.cf-assistant-restore:hover {
  opacity: 1;
}

@keyframes cf-assistant-restore-in {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
}

/* ── 拖动 / 关闭状态 ── */

.cf-assistant-root--dragging,
.cf-assistant-root--dragging * {
  user-select: none;
}

.cf-assistant-root--dragging .cf-assistant-launcher,
.cf-assistant-root--dragging .cf-assistant-launcher:hover {
  cursor: grabbing;
  transform: none;
}

.cf-assistant-root--dismissed .cf-assistant-dock,
.cf-assistant-root--dismissed .cf-assistant-panel {
  display: none;
}

/* 关闭后 root 仅剩小圆点，toast 改用视口定位避免错位 */
.cf-assistant-root--dismissed .cf-assistant-toast {
  position: fixed;
  left: auto;
  right: 20px;
  bottom: calc(68px + env(safe-area-inset-bottom, 0));
  transform: translateY(8px);
}

.cf-assistant-root--dismissed .cf-assistant-toast.cf-assistant-toast--visible {
  transform: translateY(0);
}

/* ── Panel ── */

.cf-assistant-panel {
  --assistant-font-xs: 12px;
  --assistant-font-sm: 13px;
  --assistant-font-body: 14px;
  --assistant-font-body-lg: 15px;
  --assistant-font-h3: 16px;
  --assistant-font-h2: 18px;
  --assistant-font-title: 15px;

  --assistant-pad-x: 12px;
  --assistant-control-h: 26px;

  position: relative;
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  height: min(720px, calc(100vh - 40px));
  background: var(--assistant-surface);
  border-radius: 14px;
  box-shadow: 0 4px 24px rgba(31, 35, 40, 0.12);
  border: 1px solid var(--assistant-border-soft);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-panel.cf-assistant-panel--open {
  display: flex;
}

.cf-assistant-panel:focus {
  outline: none;
}

/* ── 面板 resize 抓手（左/顶边 + 左上角） ── */

.cf-assistant-resize-handle {
  position: absolute;
  z-index: 30;
  touch-action: none;
}

.cf-assistant-resize-handle--top {
  top: 0;
  left: 14px;
  right: 14px;
  height: 6px;
  cursor: ns-resize;
}

.cf-assistant-resize-handle--left {
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 6px;
  cursor: ew-resize;
}

.cf-assistant-resize-handle--corner {
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  cursor: nwse-resize;
}

.cf-assistant-root--resizing,
.cf-assistant-root--resizing * {
  user-select: none;
}

/* ── Header ── */

.cf-assistant-header,
.cf-assistant-panel-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 8px;
  min-height: 40px;
  padding: 6px var(--assistant-pad-x);
  border-bottom: 1px solid var(--assistant-border-soft);
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  background: var(--assistant-surface);
  cursor: grab;
  user-select: none;
}

.cf-assistant-root--dragging .cf-assistant-panel-header {
  cursor: grabbing;
}

.cf-assistant-panel-header button,
.cf-assistant-panel-header select,
.cf-assistant-panel-header [role='button'] {
  cursor: pointer;
}

.cf-assistant-header-title,
.cf-assistant-panel-title {
  font-size: var(--assistant-font-title);
  font-weight: 650;
  line-height: 20px;
  letter-spacing: -0.01em;
  color: var(--assistant-text-primary);
  white-space: nowrap;
}

.cf-assistant-header-brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
}

.cf-assistant-header-tools {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 4px;
  min-width: 0;
  flex: 1 1 160px;
}

.cf-assistant-llm-picker {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  flex: 0 1 auto;
}

.cf-assistant-llm-picker__label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.cf-assistant-llm-select {
  max-width: 116px;
  min-width: 72px;
  width: auto;
  box-sizing: border-box;
  height: var(--assistant-control-h);
  padding: 0 22px 0 8px;
  border: 1px solid var(--assistant-border-soft);
  border-radius: 999px;
  background: var(--assistant-surface-muted) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'%3E%3Cpath fill='%2357606a' d='M2.5 4.5 6 8l3.5-3.5'/%3E%3C/svg%3E") no-repeat right 8px center;
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  color: var(--assistant-text-primary);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.cf-assistant-llm-select:hover:not(:disabled) {
  border-color: rgba(9, 105, 218, 0.28);
}

.cf-assistant-llm-select:focus-visible {
  outline: 2px solid var(--assistant-accent);
  outline-offset: 1px;
}

.cf-assistant-language-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  min-width: 0;
}

.cf-assistant-language-actions--solo-add {
  justify-content: flex-start;
}

.cf-assistant-add-selection {
  height: var(--assistant-control-h);
  padding: 0 8px 0 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid var(--assistant-border-soft);
  border-radius: 999px;
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-tertiary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: not-allowed;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    color 160ms ease;
}

.cf-assistant-add-selection-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  font-size: 10px;
  line-height: 1;
  opacity: 0.85;
}

.cf-assistant-add-selection-label {
  line-height: 1;
}

.cf-assistant-add-selection--ready:not(:disabled) {
  background: rgba(9, 105, 218, 0.08);
  border-color: rgba(9, 105, 218, 0.28);
  color: var(--assistant-accent);
  cursor: pointer;
  box-shadow: none;
}

.cf-assistant-add-selection--ready:not(:disabled):hover {
  background: rgba(9, 105, 218, 0.14);
  border-color: rgba(9, 105, 218, 0.4);
}

.cf-assistant-add-selection--ready:not(:disabled):active {
  background: rgba(9, 105, 218, 0.18);
}

.cf-assistant-add-selection:disabled {
  opacity: 1;
}

.cf-assistant-header-actions {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 0 0 auto;
  margin-left: auto;
}

.cf-assistant-icon-btn,
.cf-assistant-header-action {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--assistant-text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.cf-assistant-icon-btn i,
.cf-assistant-header-action i {
  pointer-events: none;
  font-size: 14px;
}

.cf-assistant-icon-btn:hover,
.cf-assistant-header-action:hover {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.cf-assistant-icon-btn:focus-visible,
.cf-assistant-header-action:focus-visible {
  outline: 2px solid var(--assistant-accent);
  outline-offset: 1px;
}

.cf-assistant-icon-btn--active {
  background: rgba(9, 105, 218, 0.1);
  color: var(--assistant-accent);
}

/* ── Body layout ── */

.cf-assistant-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-chat-view {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-content {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-panel--history .cf-assistant-chat-view {
  display: none !important;
}

/* ── Scroll area（粘底：关闭浏览器 scroll anchoring，改由 JS 控制） ── */

.cf-assistant-messages-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-messages,
.cf-assistant-message-scroll {
  flex: 1;
  overflow: auto;
  overflow-anchor: none;
  padding: 10px var(--assistant-pad-x) 8px;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--assistant-scroll-thumb) transparent;
}

.cf-assistant-jump-bottom {
  position: absolute;
  left: 50%;
  bottom: 8px;
  z-index: 2;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  border: 1px solid var(--assistant-border);
  border-radius: 50%;
  background: var(--assistant-surface);
  color: var(--assistant-text-secondary);
  box-shadow: 0 4px 14px rgba(31, 35, 40, 0.12);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: opacity 160ms ease, transform 160ms ease, background 160ms ease;
}

.cf-assistant-jump-bottom:hover {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.cf-assistant-jump-bottom[hidden] {
  display: none !important;
}

.cf-assistant-messages::-webkit-scrollbar,
.cf-assistant-message-scroll::-webkit-scrollbar {
  width: 6px;
}

.cf-assistant-messages::-webkit-scrollbar-track,
.cf-assistant-message-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.cf-assistant-messages::-webkit-scrollbar-thumb,
.cf-assistant-message-scroll::-webkit-scrollbar-thumb {
  background: var(--assistant-scroll-thumb);
  border-radius: 999px;
}

.cf-assistant-messages::-webkit-scrollbar-thumb:hover,
.cf-assistant-message-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--assistant-scroll-thumb-hover);
}

.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-messages-wrap {
  display: none;
}

/* ── Empty state / welcome ── */

.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-chat-view {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  min-height: 0;
  overflow-y: auto;
}

.cf-assistant-root--empty .cf-assistant-chat-view {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.cf-assistant-root--empty .cf-assistant-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  min-height: 0;
  overflow-y: auto;
}

.cf-assistant-empty {
  flex: 1 1 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
  padding: 16px var(--assistant-pad-x);
  min-height: 0;
}

.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-empty {
  display: flex;
}

.cf-assistant-root--has-messages .cf-assistant-empty {
  display: none;
}

.cf-assistant-empty-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  text-align: center;
}

.cf-assistant-empty-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: rgba(9, 105, 218, 0.08);
  color: var(--assistant-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.cf-assistant-empty-title {
  margin: 0 0 6px;
  font-size: var(--assistant-font-title);
  font-weight: 650;
  line-height: 1.35;
  color: var(--assistant-text-primary);
}

.cf-assistant-empty-text {
  margin: 0;
  font-size: var(--assistant-font-sm);
  line-height: 1.65;
  color: var(--assistant-text-secondary);
}

.cf-assistant-chips {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 320px;
  margin: 12px auto 0;
  text-align: left;
}

.cf-assistant-chip {
  display: block;
  width: 100%;
  border: 1px solid rgba(22, 119, 255, 0.12);
  background: #f0f6ff;
  color: var(--assistant-text-primary);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: var(--assistant-font-sm);
  line-height: 1.45;
  cursor: pointer;
  text-align: left;
  white-space: normal;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.cf-assistant-chip:hover {
  border-color: var(--assistant-accent);
  background: rgba(9, 105, 218, 0.1);
  color: var(--assistant-accent);
}

.theme--dark .cf-assistant-chip,
[data-theme='dark'] .cf-assistant-chip {
  background: rgba(68, 147, 248, 0.1);
  border-color: rgba(68, 147, 248, 0.18);
  color: var(--assistant-text-primary);
}

.theme--dark .cf-assistant-chip:hover,
[data-theme='dark'] .cf-assistant-chip:hover {
  background: rgba(68, 147, 248, 0.16);
  border-color: var(--assistant-accent);
  color: var(--assistant-accent);
}

/* ── Messages ── */

.cf-assistant-msg {
  margin-bottom: 12px;
}

.cf-assistant-msg:last-child {
  margin-bottom: 4px;
}

.cf-assistant-msg-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.cf-assistant-msg-row--user {
  justify-content: flex-end;
}

.cf-assistant-msg-content {
  max-width: calc(100% - 32px);
  min-width: 0;
  flex: 1 1 auto;
}

.cf-assistant-msg--user .cf-assistant-msg-row--user {
  justify-content: flex-end;
}

.cf-assistant-msg--user .cf-assistant-msg-content {
  flex: 0 1 auto;
  max-width: min(88%, calc(100% - 32px));
}

.cf-assistant-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
}

.cf-assistant-avatar--user {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-secondary);
}

.cf-assistant-avatar--bot {
  background: rgba(9, 105, 218, 0.1);
  color: var(--assistant-accent);
}

.cf-assistant-quote {
  font-size: var(--assistant-font-xs);
  color: var(--assistant-text-secondary);
  border-left: 3px solid var(--assistant-accent);
  padding: 4px 0 4px 10px;
  margin-bottom: 8px;
  line-height: 1.5;
}

/* ── User bubble ── */

.cf-assistant-msg--user .cf-assistant-msg-body {
  background: var(--assistant-surface-muted);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: var(--assistant-font-body);
  line-height: 1.55;
  color: var(--assistant-text-primary);
  width: fit-content;
  margin-left: auto;
}

/* ── Assistant markdown body（labuladong 气泡） ── */

.cf-assistant-msg--assistant .cf-assistant-msg-body {
  max-width: 100%;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--assistant-surface-muted);
  font-size: var(--assistant-font-body);
  line-height: 1.65;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
  word-break: normal;
  text-align: left;
  color: var(--assistant-text-primary);
}

.cf-assistant-msg-body.is-streaming {
  min-height: 2.5em;
}

.cf-assistant-msg-stream-root {
  min-height: 1.5em;
}

.cf-assistant-msg--streaming .cf-assistant-msg-body {
  contain: layout style;
}

/* 禁用入场动画，避免流式跳动 */
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > *,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md .cf-assistant-msg-stream-root > * {
  animation: none !important;
}

/* AI 助教 Markdown 排版（独立于全站 .markdown-body） */
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md {
  font-size: var(--assistant-font-body) !important;
  line-height: 1.65 !important;
  font-weight: 400 !important;
  color: var(--assistant-text-primary) !important;
  font-family:
    'Noto Sans SC',
    'PingFang SC',
    'Microsoft YaHei',
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif !important;
  width: auto;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md p {
  margin: 0 0 8px;
  text-align: left;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > :last-child {
  margin-bottom: 0;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md strong {
  font-weight: 600 !important;
  color: var(--assistant-text-primary);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h1,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h2,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h3,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h4 {
  color: var(--assistant-text-primary);
  letter-spacing: -0.01em;
  scroll-margin-top: 16px;
  font-family: inherit !important;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h1 {
  font-size: 18px !important;
  font-weight: 700;
  line-height: 1.35;
  margin: 14px 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--assistant-border);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h2 {
  font-size: var(--assistant-font-h2) !important;
  font-weight: 700;
  line-height: 1.35;
  margin: 14px 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--assistant-border);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h3 {
  font-size: var(--assistant-font-h3) !important;
  font-weight: 650;
  line-height: 1.45;
  margin: 12px 0 6px;
  border-bottom: none;
  padding-bottom: 0;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md h4 {
  font-size: var(--assistant-font-body-lg);
  font-weight: 650;
  line-height: 1.45;
  margin: 10px 0 6px;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > h1:first-child,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > h2:first-child,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > h3:first-child,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md .cf-assistant-msg-stream-root > :first-child {
  margin-top: 0 !important;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md .cf-assistant-msg-stream-root > :last-child {
  margin-bottom: 0;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md ul,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md ol {
  margin: 6px 0 10px;
  padding-left: 1.35em;
  font-size: var(--assistant-font-body);
  line-height: 1.6;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md li {
  margin: 3px 0;
  padding-left: 2px;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md li > ul,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md li > ol {
  margin-top: 5px;
  margin-bottom: 5px;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md hr {
  height: 1px;
  margin: 12px 0;
  border: 0;
  background: var(--assistant-border);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md a {
  color: var(--assistant-accent);
  text-decoration: none;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md a:hover {
  text-decoration: underline;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md blockquote {
  margin: 10px 0;
  padding: 6px 10px;
  border-left: 3px solid var(--assistant-accent);
  color: var(--assistant-text-secondary);
  background: var(--assistant-surface-muted);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md table {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 14px 0;
  border-collapse: collapse;
  font-size: 13.5px;
  overflow-x: auto;
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md th,
.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md td {
  padding: 6px 8px;
  line-height: 1.5;
  border: 1px solid var(--assistant-border-soft);
}

.cf-assistant-root .cf-assistant-msg-body.cf-assistant-md :not(pre) > code {
  padding: 1px 5px;
  border-radius: 5px;
  font-size: 0.92em;
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    'Liberation Mono',
    monospace;
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

/* 代码块 IDE 外观见 assistant-code.css（与 CodeNote code-switcher 一致） */

/* ── Conversation hint ── */

.cf-assistant-conversation-hint,
.cf-assistant-hint {
  flex-shrink: 0;
  margin: 0;
  padding: 8px var(--assistant-pad-x) 0;
  border-top: 1px solid var(--assistant-border-soft);
  font-size: var(--assistant-font-xs);
  line-height: 16px;
  color: var(--assistant-text-tertiary);
  text-align: center;
  background: var(--assistant-surface);
}

.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-conversation-hint,
.cf-assistant-root:not(.cf-assistant-root--has-messages) .cf-assistant-hint {
  display: none;
}

.cf-assistant-hint-link {
  border: none;
  background: transparent;
  color: var(--assistant-accent);
  cursor: pointer;
  font-size: var(--assistant-font-xs);
  font-weight: 500;
  padding: 0 2px;
  text-decoration: none;
}

.cf-assistant-hint-link:hover {
  text-decoration: underline;
}

/* ── Quote preview（与提问区一体，无外框/分隔线） ── */

.cf-assistant-quote-preview {
  margin: 0;
  padding: 6px var(--assistant-pad-x) 0;
  background: transparent;
  border-radius: 0;
  font-size: var(--assistant-font-xs);
  flex-shrink: 0;
}

.cf-assistant-quote-clear {
  margin-left: 8px;
  border: none;
  background: transparent;
  color: var(--assistant-accent);
  cursor: pointer;
}

/* 有引用时：去掉提问框顶部分隔线，视觉并入同一输入区 */
.cf-assistant-chat-view:has(.cf-assistant-quote-preview:not([hidden])) .cf-assistant-composer {
  border-top: none;
  padding-top: 6px;
}

/* ── Composer ── */

.cf-assistant-composer {
  padding: 8px var(--assistant-pad-x) 6px;
  border-top: 1px solid var(--assistant-border-soft);
  background: var(--assistant-surface);
  flex-shrink: 0;
}

.cf-assistant-root--empty .cf-assistant-composer {
  border-top-color: var(--assistant-border-soft);
}

.cf-assistant-root--has-messages .cf-assistant-composer {
  border-top: none;
  padding-top: 6px;
}

.cf-assistant-composer-box,
.cf-assistant-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 38px;
  padding: 3px 6px 3px 12px;
  border: 1px solid var(--assistant-border);
  border-radius: 19px;
  background: var(--assistant-surface);
  margin: 0;
}

.cf-assistant-composer-box--multiline {
  align-items: flex-end;
  padding-top: 6px;
  padding-bottom: 6px;
}

.cf-assistant-composer textarea,
.cf-assistant-input-wrap textarea {
  flex: 1;
  width: 100%;
  box-sizing: border-box;
  resize: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin: 0;
  font-family: inherit;
  font-size: var(--assistant-font-body);
  line-height: 20px;
  min-height: 20px;
  max-height: 120px;
  background: transparent;
  color: var(--assistant-text-primary);
  field-sizing: content;
}

.cf-assistant-composer textarea:focus,
.cf-assistant-input-wrap textarea:focus {
  outline: none;
}

.cf-assistant-composer-box:focus-within,
.cf-assistant-input-wrap:focus-within {
  border-color: var(--assistant-accent);
  box-shadow: 0 0 0 2px rgba(9, 105, 218, 0.12);
}

.cf-assistant-composer textarea::placeholder,
.cf-assistant-input-wrap textarea::placeholder {
  color: var(--assistant-text-tertiary);
}

.cf-assistant-send,
.cf-assistant-send-button {
  position: static;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 50%;
  background: var(--assistant-accent);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.cf-assistant-send:hover:not(:disabled),
.cf-assistant-send-button:hover:not(:disabled) {
  background: var(--assistant-accent-hover);
}

.cf-assistant-send:disabled,
.cf-assistant-send-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 停止态必须压过发送按钮蓝底及其 :hover / 全局 button 样式 */
.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop,
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop {
  background: #57606a !important;
  background-color: #57606a !important;
  background-image: none !important;
  color: #fff !important;
  border-color: transparent !important;
}

.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop:hover:not(:disabled),
.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop:focus,
.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop:focus-visible,
.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop:active,
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop:hover:not(:disabled),
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop:focus,
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop:focus-visible,
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop:active {
  background: #1f2328 !important;
  background-color: #1f2328 !important;
  background-image: none !important;
  color: #fff !important;
}

.cf-assistant-send:focus-visible,
.cf-assistant-send-button:focus-visible {
  outline: 2px solid var(--assistant-accent);
  outline-offset: 2px;
}

.cf-assistant-root button.cf-assistant-send.cf-assistant-send--stop:focus-visible,
.cf-assistant-root button.cf-assistant-send-button.cf-assistant-send--stop:focus-visible {
  outline-color: #57606a;
}

/* ── Footer / quota ── */

.cf-assistant-footer,
.cf-assistant-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 28px;
  padding: 2px var(--assistant-pad-x) 8px;
  border-top: none;
  font-size: var(--assistant-font-xs);
  line-height: 16px;
  color: var(--assistant-text-tertiary);
  flex-shrink: 0;
  background: var(--assistant-surface);
}

.cf-assistant-quota {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
  color: var(--assistant-text-tertiary);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cf-assistant-quota:hover {
  color: var(--assistant-accent);
}

.cf-assistant-quota i {
  font-size: 13px;
}

/* ── Code language select ── */

.cf-assistant-code-lang {
  display: inline-flex;
  align-items: center;
}

.cf-assistant-code-lang--header {
  flex-shrink: 0;
}

.cf-assistant-code-lang-field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  cursor: pointer;
}

.cf-assistant-code-lang-label {
  color: var(--assistant-text-secondary);
  font-size: var(--assistant-font-xs);
  white-space: nowrap;
}

.cf-assistant-code-lang-select {
  min-width: 108px;
  max-width: 160px;
  height: 32px;
  padding: 0 28px 0 10px;
  border: 1px solid var(--assistant-border-soft);
  border-radius: 8px;
  background: var(--assistant-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2357606a' d='M2.5 4.5 6 8l3.5-3.5'/%3E%3C/svg%3E") no-repeat right 8px center;
  color: var(--assistant-text-primary);
  font-size: var(--assistant-font-xs);
  line-height: 1;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.cf-assistant-code-lang-select--compact {
  min-width: 92px;
  height: 28px;
  padding-right: 24px;
}

.cf-assistant-code-lang-select:hover {
  border-color: rgba(9, 105, 218, 0.35);
}

.cf-assistant-code-lang-select:focus-visible {
  outline: 2px solid var(--assistant-accent);
  outline-offset: 1px;
}

.cf-assistant-code-lang-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/*
 * 选区悬浮「问 AI」挂在 document.body，不在 .cf-assistant-root 内，
 * 不能依赖 --assistant-* 变量（会回落到黑色），颜色一律写死。
 */
.cf-assistant-add-selection-float {
  position: fixed;
  z-index: 12070;
  height: 34px;
  padding: 0 14px 0 12px;
  gap: 7px;
  border: 1px solid #b6d4fe;
  border-radius: 999px;
  background: #f0f7ff;
  color: #0969da !important;
  box-shadow: 0 6px 18px rgba(9, 105, 218, 0.16);
  cursor: pointer;
  opacity: 0;
  transform: translateY(6px) scale(0.96);
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}

.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled) {
  background: #f0f7ff;
  border-color: #b6d4fe;
  color: #0969da !important;
  box-shadow: 0 6px 18px rgba(9, 105, 218, 0.16);
}

.cf-assistant-add-selection-float .cf-assistant-add-selection-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(9, 105, 218, 0.14);
  font-size: 10px;
  opacity: 1;
  color: #0969da !important;
}

.cf-assistant-add-selection-float .cf-assistant-add-selection-icon i,
.cf-assistant-add-selection-float .cf-assistant-add-selection-label {
  color: #0969da !important;
}

.cf-assistant-add-selection-float--visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled):hover {
  background: #e7f1ff;
  border-color: #8ab8f8;
  color: #0550ae !important;
  filter: none;
  box-shadow: 0 8px 22px rgba(9, 105, 218, 0.2);
  transform: translateY(-1px) scale(1);
}

.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled):hover .cf-assistant-add-selection-icon,
.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled):hover .cf-assistant-add-selection-icon i,
.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled):hover .cf-assistant-add-selection-label {
  color: #0550ae !important;
}

.cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled):active {
  transform: translateY(0) scale(0.98);
  filter: none;
  box-shadow: 0 3px 10px rgba(9, 105, 218, 0.12);
}

/* ── 引用正文（轻量标签式，无蓝线/无内框） ── */

.cf-assistant-reference-slot {
  flex-shrink: 0;
}

.cf-assistant-ref-card {
  position: relative;
  margin: 0;
  padding: 2px 28px 8px 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

.cf-assistant-ref-card__title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--assistant-text-tertiary);
  margin-bottom: 4px;
}

.cf-assistant-ref-card__title::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--assistant-accent);
  opacity: 0.55;
  flex-shrink: 0;
}

.cf-assistant-ref-card__text {
  font-size: 13px;
  line-height: 1.55;
  color: var(--assistant-text-secondary);
  white-space: pre-wrap;
  overflow: hidden;
  word-break: break-word;
}

.cf-assistant-ref-card__text--composer {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.cf-assistant-ref-card__text--history {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* 展开：限高 + 独立纵向滚动（带滑块），不撑爆输入区 */
.cf-assistant-ref-card--expanded .cf-assistant-ref-card__text {
  display: block;
  -webkit-line-clamp: unset;
  -webkit-box-orient: initial;
  max-height: 148px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 8px 8px 8px 10px;
  margin-top: 2px;
  border-radius: 8px;
  background: var(--assistant-surface-muted);
  scrollbar-width: thin;
  scrollbar-color: var(--assistant-scroll-thumb) transparent;
}

.cf-assistant-ref-card[data-ref-mode='composer'].cf-assistant-ref-card--expanded .cf-assistant-ref-card__text {
  max-height: 132px;
}

.cf-assistant-ref-card--expanded .cf-assistant-ref-card__text::-webkit-scrollbar {
  width: 5px;
}

.cf-assistant-ref-card--expanded .cf-assistant-ref-card__text::-webkit-scrollbar-track {
  background: transparent;
  margin: 4px 0;
}

.cf-assistant-ref-card--expanded .cf-assistant-ref-card__text::-webkit-scrollbar-thumb {
  background: var(--assistant-scroll-thumb);
  border-radius: 999px;
}

.cf-assistant-ref-card--expanded .cf-assistant-ref-card__text::-webkit-scrollbar-thumb:hover {
  background: var(--assistant-scroll-thumb-hover);
}

.cf-assistant-ref-card__meta {
  margin-top: 4px;
  font-size: 11px;
  color: var(--assistant-text-tertiary);
}

.cf-assistant-ref-card__remove {
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--assistant-text-tertiary);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.cf-assistant-ref-card__remove:hover {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.cf-assistant-ref-card__toggle {
  margin-top: 4px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--assistant-accent);
  font-size: 12px;
  cursor: pointer;
}

.cf-assistant-ref-card__toggle:hover {
  text-decoration: underline;
}

/* 历史气泡内引用：轻微底色区分，仍无蓝线/描边框 */
.cf-assistant-msg--user .cf-assistant-ref-card {
  margin: 0 0 8px;
  padding: 8px 10px;
  background: rgba(31, 35, 40, 0.04);
  border: none;
  border-radius: 8px;
}

.cf-assistant-msg--user .cf-assistant-ref-card__title::before {
  opacity: 0.4;
}

.cf-assistant-msg--user .cf-assistant-ref-card--expanded .cf-assistant-ref-card__text {
  background: rgba(31, 35, 40, 0.05);
  max-height: 160px;
}

.theme--dark .cf-assistant-ref-card--expanded .cf-assistant-ref-card__text,
[data-theme='dark'] .cf-assistant-ref-card--expanded .cf-assistant-ref-card__text {
  background: rgba(255, 255, 255, 0.06);
}

.theme--dark .cf-assistant-msg--user .cf-assistant-ref-card--expanded .cf-assistant-ref-card__text,
[data-theme='dark'] .cf-assistant-msg--user .cf-assistant-ref-card--expanded .cf-assistant-ref-card__text {
  background: rgba(255, 255, 255, 0.08);
}

/* ── 继续追问 ── */

.cf-assistant-follow-up {
  margin-top: 8px;
}

.cf-assistant-follow-up-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--assistant-text-secondary);
  margin-bottom: 6px;
}

.cf-assistant-follow-up-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cf-assistant-follow-up-question {
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid #e1e8f0;
  border-radius: 14px;
  background: #f7f9fc;
  color: #475467;
  font-size: 12px;
  line-height: 16px;
  cursor: pointer;
  text-align: left;
}

.cf-assistant-follow-up-question:hover {
  background: #edf5ff;
  border-color: #b8d5ff;
  color: #1677ff;
}

/* ── Toast ── */

.cf-assistant-toast {
  position: absolute;
  left: 50%;
  bottom: 56px;
  transform: translateX(-50%) translateY(8px);
  z-index: 5;
  padding: 8px 14px;
  border-radius: 8px;
  background: rgba(31, 35, 40, 0.88);
  color: #fff;
  font-size: 12px;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.cf-assistant-toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.theme--dark .cf-assistant-ref-card,
[data-theme='dark'] .cf-assistant-ref-card {
  background: transparent;
  border: none;
}

.theme--dark .cf-assistant-msg--user .cf-assistant-ref-card,
[data-theme='dark'] .cf-assistant-msg--user .cf-assistant-ref-card {
  background: rgba(255, 255, 255, 0.06);
}

.theme--dark .cf-assistant-add-selection--ready:not(:disabled),
[data-theme='dark'] .cf-assistant-add-selection--ready:not(:disabled) {
  background: rgba(68, 147, 248, 0.12);
  border-color: rgba(68, 147, 248, 0.35);
  color: #79b8ff;
}

.theme--dark .cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled),
[data-theme='dark'] .cf-assistant-add-selection-float.cf-assistant-add-selection--ready:not(:disabled) {
  background: #152238;
  border-color: rgba(88, 166, 255, 0.45);
  color: #79b8ff !important;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.theme--dark .cf-assistant-add-selection-float .cf-assistant-add-selection-icon,
.theme--dark .cf-assistant-add-selection-float .cf-assistant-add-selection-icon i,
.theme--dark .cf-assistant-add-selection-float .cf-assistant-add-selection-label,
[data-theme='dark'] .cf-assistant-add-selection-float .cf-assistant-add-selection-icon,
[data-theme='dark'] .cf-assistant-add-selection-float .cf-assistant-add-selection-icon i,
[data-theme='dark'] .cf-assistant-add-selection-float .cf-assistant-add-selection-label {
  background: transparent;
  color: #79b8ff !important;
}

.theme--dark .cf-assistant-add-selection-float .cf-assistant-add-selection-icon,
[data-theme='dark'] .cf-assistant-add-selection-float .cf-assistant-add-selection-icon {
  background: rgba(88, 166, 255, 0.16);
}

/* legacy selection popover (removed) */
.cf-assistant-selection-popover {
  display: none !important;
}

/* ── History ── */

.cf-assistant-history-view {
  display: none;
  flex: 1;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
}

.cf-assistant-panel--history .cf-assistant-history-view {
  display: flex;
}

.cf-assistant-history-list {
  flex: 1;
  overflow: auto;
  padding: 6px var(--assistant-pad-x) 10px;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--assistant-scroll-thumb) transparent;
}

.cf-assistant-history-empty {
  margin: 24px 8px;
  text-align: center;
  font-size: var(--assistant-font-sm);
  color: var(--assistant-text-tertiary);
}

.cf-assistant-history-empty--error {
  color: #cf1322;
}

.cf-assistant-history-item {
  display: flex;
  align-items: stretch;
  gap: 4px;
  margin-bottom: 6px;
}

.cf-assistant-history-item-main {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--assistant-border-soft);
  border-radius: 8px;
  background: var(--assistant-surface);
  padding: 8px 10px;
  text-align: left;
  cursor: pointer;
}

.cf-assistant-history-item-main:hover {
  border-color: var(--assistant-accent);
  background: rgba(9, 105, 218, 0.04);
}

.cf-assistant-history-item-title {
  display: block;
  font-size: var(--assistant-font-sm);
  line-height: 1.45;
  color: var(--assistant-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cf-assistant-history-item-meta {
  display: block;
  margin-top: 4px;
  font-size: var(--assistant-font-xs);
  color: var(--assistant-text-tertiary);
}

.cf-assistant-history-item-delete {
  width: 32px;
  border: 1px solid var(--assistant-border-soft);
  border-radius: 8px;
  background: var(--assistant-surface);
  color: var(--assistant-text-tertiary);
  cursor: pointer;
  flex-shrink: 0;
}

.cf-assistant-history-item-delete:hover {
  color: #cf1322;
  border-color: #ffccc7;
  background: #fff2f0;
}

/* ── Code copy：使用 CodeNote .code-copy-btn（见 assistant-code.css） ── */

.cf-assistant-root .code-toolbar > .toolbar,
.cf-assistant-root .code-toolbar .toolbar-item {
  display: none !important;
}

/* ── Thinking placeholder ── */

.cf-assistant-thinking {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
}

.cf-assistant-thinking-dots {
  display: inline-flex;
  align-items: flex-end;
  gap: 5px;
  height: 16px;
  flex: 0 0 auto;
}

.cf-assistant-thinking-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--assistant-accent);
  opacity: 0.35;
  animation: cf-assistant-dot-bounce 1.1s ease-in-out infinite;
}

.cf-assistant-thinking-dot:nth-child(1) {
  animation-delay: 0s;
}

.cf-assistant-thinking-dot:nth-child(2) {
  animation-delay: 0.16s;
}

.cf-assistant-thinking-dot:nth-child(3) {
  animation-delay: 0.32s;
}

.cf-assistant-thinking-text {
  margin: 0;
  font-size: var(--assistant-font-body);
  line-height: 1.6;
  color: var(--assistant-text-secondary);
  letter-spacing: 0.01em;
}

@keyframes cf-assistant-dot-bounce {
  0%,
  55%,
  100% {
    transform: translateY(0);
    opacity: 0.35;
  }

  28% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

/* ── Dark mode ── */

.theme--dark .cf-assistant-root,
[data-theme='dark'] .cf-assistant-root {
  --assistant-text-primary: #e6edf3;
  --assistant-text-secondary: #9198a1;
  --assistant-text-tertiary: #7d8590;

  --assistant-surface: #0d1117;
  --assistant-surface-muted: #161b22;

  --assistant-border: #30363d;
  --assistant-border-soft: #21262d;

  --assistant-accent: #4493f8;
  --assistant-accent-hover: #6cb6ff;

  --assistant-scroll-thumb: rgba(230, 237, 243, 0.22);
  --assistant-scroll-thumb-hover: rgba(230, 237, 243, 0.35);
}

.theme--dark .cf-assistant-launcher,
[data-theme='dark'] .cf-assistant-launcher {
  --launcher-accent-start: #4493f8;
  --launcher-accent-end: #0969da;
  background: linear-gradient(180deg, #21262d 0%, #1c2128 100%);
  color: var(--assistant-text-primary);
  border-color: rgba(68, 147, 248, 0.22);
  box-shadow:
    0 4px 18px rgba(0, 0, 0, 0.35),
    0 1px 2px rgba(0, 0, 0, 0.2);
}

.theme--dark .cf-assistant-launcher:hover,
[data-theme='dark'] .cf-assistant-launcher:hover {
  border-color: rgba(68, 147, 248, 0.42);
  box-shadow:
    0 10px 28px rgba(0, 0, 0, 0.45),
    0 2px 8px rgba(68, 147, 248, 0.12);
}

.theme--dark .cf-assistant-launcher--active,
[data-theme='dark'] .cf-assistant-launcher--active {
  background: linear-gradient(180deg, #1a2332 0%, #161b22 100%);
  border-color: rgba(68, 147, 248, 0.5);
  color: var(--assistant-accent);
}

.theme--dark .cf-assistant-panel,
[data-theme='dark'] .cf-assistant-panel {
  background: var(--assistant-surface);
  border-color: var(--assistant-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.theme--dark .cf-assistant-llm-select,
[data-theme='dark'] .cf-assistant-llm-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'%3E%3Cpath fill='%239198a1' d='M2.5 4.5 6 8l3.5-3.5'/%3E%3C/svg%3E");
}

.theme--dark .cf-assistant-msg--user .cf-assistant-msg-body,
[data-theme='dark'] .cf-assistant-msg--user .cf-assistant-msg-body {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.theme--dark .cf-assistant-msg--assistant .cf-assistant-msg-body,
[data-theme='dark'] .cf-assistant-msg--assistant .cf-assistant-msg-body {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.theme--dark .cf-assistant-empty-icon,
[data-theme='dark'] .cf-assistant-empty-icon {
  background: rgba(68, 147, 248, 0.12);
}

.theme--dark .cf-assistant-launcher-icon,
[data-theme='dark'] .cf-assistant-launcher-icon {
  background: rgba(68, 147, 248, 0.12);
}

.theme--dark .cf-assistant-launcher--active .cf-assistant-launcher-icon,
[data-theme='dark'] .cf-assistant-launcher--active .cf-assistant-launcher-icon {
  background: rgba(68, 147, 248, 0.2);
}

.theme--dark .cf-assistant-root .cf-assistant-msg-body.cf-assistant-md :not(pre) > code,
[data-theme='dark'] .cf-assistant-root .cf-assistant-msg-body.cf-assistant-md :not(pre) > code {
  background: var(--assistant-surface-muted);
  color: var(--assistant-text-primary);
}

.theme--dark .cf-assistant-composer-box,
.theme--dark .cf-assistant-input-wrap,
[data-theme='dark'] .cf-assistant-composer-box,
[data-theme='dark'] .cf-assistant-input-wrap {
  background: var(--assistant-surface-muted);
  border-color: var(--assistant-border);
}

.theme--dark .cf-assistant-composer textarea,
[data-theme='dark'] .cf-assistant-composer textarea {
  color: var(--assistant-text-primary);
}

.theme--dark .cf-assistant-history-item-main,
[data-theme='dark'] .cf-assistant-history-item-main {
  background: var(--assistant-surface-muted);
  border-color: var(--assistant-border);
}

.theme--dark .cf-assistant-thinking-dot,
[data-theme='dark'] .cf-assistant-thinking-dot {
  background: var(--assistant-accent);
}

@media (prefers-reduced-motion: reduce) {
  .cf-assistant-thinking-dot {
    animation: none;
    opacity: 0.85;
  }

  .cf-assistant-root .cf-assistant-msg-body.cf-assistant-md > *,
  .cf-assistant-root .cf-assistant-msg-body.cf-assistant-md .cf-assistant-msg-stream-root > * {
    animation: none !important;
  }
}