/* ─── File Explorer Panel ─── */

.workspace-area {
  display: flex;
  flex-direction: row;
  flex: 1;
  min-height: 0;
  gap: 0;
}

.workspace-area .terminal-wrapper {
  flex: 1;
  min-width: 0;
}

/* ─── Explorer Toggle Button ─── */
.explorer-toggle-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 6px;
  font-size: 13px;
  line-height: 1;
  transition: all 0.15s;
  margin-left: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.explorer-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}
.explorer-toggle-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(245, 158, 11, 0.1);
}

/* ─── Resize Handle (between terminal and explorer) ─── */
.explorer-resize-handle {
  width: 4px;
  cursor: col-resize;
  background: var(--border);
  transition: background 0.15s;
  flex-shrink: 0;
}
.explorer-resize-handle:hover,
.explorer-resize-handle.dragging {
  background: var(--accent);
}

/* ─── Preview Resize Handle ─── */
.preview-resize-handle {
  width: 4px;
  cursor: col-resize;
  background: var(--border);
  transition: background 0.15s;
  flex-shrink: 0;
}
.preview-resize-handle:hover,
.preview-resize-handle.dragging {
  background: var(--accent);
}

/* ─── File Explorer Panel ─── */
.file-explorer-panel {
  width: 260px;
  min-width: 180px;
  max-width: 50vw;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.file-explorer-panel.hidden {
  display: none;
}

/* ─── Explorer Header ─── */
.explorer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.explorer-header-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.explorer-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.explorer-header-actions button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 13px;
  border-radius: 3px;
  transition: all 0.15s;
}
.explorer-header-actions button:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.show-all-toggle {
  font-size: 10px !important;
  padding: 2px 6px !important;
  border: 1px solid var(--border) !important;
}
.show-all-toggle.active {
  color: var(--accent) !important;
  border-color: var(--accent) !important;
}

/* ─── File Tree ─── */
.file-tree {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 0;
  font-size: 13px;
  font-family: var(--font-mono);
}

.file-tree::-webkit-scrollbar {
  width: 5px;
}
.file-tree::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.tree-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 12px;
  gap: 8px;
}

.tree-empty {
  padding: 20px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

.tree-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ─── Tree Item ─── */
.tree-item {
  display: flex;
  align-items: center;
  padding: 3px 8px 3px 0;
  cursor: pointer;
  color: var(--text-primary);
  transition: background 0.1s;
  white-space: nowrap;
  user-select: none;
  position: relative;
}
.tree-item:hover {
  background: var(--bg-tertiary);
}
.tree-item.selected {
  background: rgba(245, 158, 11, 0.1);
}

.tree-indent {
  display: inline-block;
  width: 16px;
  flex-shrink: 0;
}

.tree-toggle {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 10px;
  transition: transform 0.15s;
}
.tree-toggle.expanded {
  transform: rotate(90deg);
}
.tree-toggle.placeholder {
  visibility: hidden;
}

.tree-icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 4px;
  font-size: 13px;
}

.tree-name {
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  font-size: 12.5px;
}

.tree-name-input {
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 0 4px;
  outline: none;
  border-radius: 3px;
  flex: 1;
  min-width: 0;
}

.tree-size {
  font-size: 10px;
  color: var(--text-muted);
  margin-left: 8px;
  flex-shrink: 0;
}

/* Directory icon colors */
.tree-icon.dir { color: #e2b340; }
.tree-icon.file { color: var(--text-muted); }

/* ─── Git Info Panel ─── */
.git-info-panel {
  border-top: 1px solid var(--border);
  padding: 8px 10px;
  flex-shrink: 0;
  font-size: 12px;
  max-height: 200px;
  overflow-y: auto;
}

.git-info-loading {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  padding: 4px 0;
}

.git-info-loading .tree-spinner {
  width: 12px;
  height: 12px;
}

.git-not-repo {
  color: var(--text-muted);
  font-style: italic;
  padding: 4px 0;
}

.git-branch {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--green);
  font-weight: 600;
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.git-remote {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.git-commits {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.git-commit {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
}

.git-commit-hash {
  color: var(--accent);
  flex-shrink: 0;
}

.git-commit-msg {
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.git-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.git-header-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.git-refresh-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  padding: 1px 4px;
  border-radius: 3px;
  transition: all 0.15s;
}
.git-refresh-btn:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

/* ─── File Preview Panel ─── */
.file-preview-panel {
  width: 400px;
  min-width: 200px;
  max-width: 60vw;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.file-preview-panel.hidden {
  display: none;
}

.preview-header {
  display: flex;
  align-items: center;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 8px;
}

.preview-filename {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.preview-actions button {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 3px;
  transition: all 0.15s;
}
.preview-actions button:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}
.preview-actions button.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(245, 158, 11, 0.1);
}

.preview-close-btn {
  background: none !important;
  border: none !important;
  color: var(--text-muted) !important;
  cursor: pointer;
  padding: 2px 4px !important;
  font-size: 16px !important;
}
.preview-close-btn:hover {
  color: var(--text-primary) !important;
}

.save-toast {
  margin-left: 8px;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  transition: opacity 0.5s ease;
}
.save-toast-saved {
  color: #22c55e;
  background: rgba(34, 197, 94, 0.12);
}
.save-toast-error {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.12);
}
.save-toast.fade-out {
  opacity: 0;
}

.preview-content {
  flex: 1;
  overflow: auto;
  position: relative;
}

.preview-code {
  margin: 0;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  tab-size: 4;
  color: var(--text-primary);
  background: transparent;
  white-space: pre;
  overflow-x: auto;
}

.preview-code code {
  font-family: inherit;
  font-size: inherit;
}

.preview-line-numbers {
  position: absolute;
  top: 0;
  left: 0;
  padding: 12px 0;
  text-align: right;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  user-select: none;
  pointer-events: none;
  width: 44px;
  border-right: 1px solid var(--border);
  background: var(--bg-secondary);
}

.preview-line-numbers span {
  display: block;
  padding-right: 8px;
}

.preview-code-with-lines {
  padding-left: 52px !important;
}

.preview-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  color: var(--text-muted);
  gap: 8px;
}

.preview-error {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  color: var(--red);
  font-size: 13px;
}

.preview-image {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  flex: 1;
}
.preview-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

/* ─── M11：不可预览类型占位 ──────────────────────────────────
   作者: Claude
   用于 #filePreviewPanel 与 #m9FullscreenPreview 两处统一样式 */
.preview-unsupported {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  min-height: 240px;
  color: var(--text-primary);
  text-align: center;
}
.preview-unsupported-icon {
  font-size: 48px;
  line-height: 1;
  opacity: 0.8;
}
.preview-unsupported-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  word-break: break-all;
  max-width: 480px;
}
.preview-unsupported-meta {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.preview-unsupported-msg {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
.preview-unsupported-download {
  margin-top: 16px;
  padding: 10px 20px;
  background: var(--accent, #3b82f6);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: filter 0.15s;
}
.preview-unsupported-download:hover {
  filter: brightness(1.1);
}
.preview-unsupported-download:active {
  filter: brightness(0.95);
}

/* M11：顶栏占位状态下的按钮禁用样式（覆盖全屏 modal 顶栏按钮） */
.m9-fp-disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* Edit mode */
.preview-editor {
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  tab-size: 4;
  resize: none;
  outline: none;
}

.preview-unsaved {
  color: var(--accent) !important;
}
.preview-unsaved::after {
  content: ' *';
}

/* ─── Markdown Preview ─── */
.preview-markdown {
  padding: 16px 20px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-primary);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.preview-markdown h1,
.preview-markdown h2,
.preview-markdown h3,
.preview-markdown h4,
.preview-markdown h5,
.preview-markdown h6 {
  margin: 1.2em 0 0.6em;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}
.preview-markdown h1 { font-size: 1.6em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.preview-markdown h2 { font-size: 1.35em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.preview-markdown h3 { font-size: 1.15em; }
.preview-markdown h4 { font-size: 1em; }

.preview-markdown p {
  margin: 0.6em 0;
}

.preview-markdown a {
  color: var(--accent);
  text-decoration: none;
}
.preview-markdown a:hover {
  text-decoration: underline;
}

.preview-markdown ul,
.preview-markdown ol {
  margin: 0.6em 0;
  padding-left: 1.8em;
}

.preview-markdown li {
  margin: 0.25em 0;
}

.preview-markdown blockquote {
  margin: 0.8em 0;
  padding: 0.4em 1em;
  border-left: 3px solid var(--accent);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}
.preview-markdown blockquote p {
  margin: 0.3em 0;
}

.preview-markdown code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background: var(--bg-tertiary);
  border-radius: 3px;
  color: var(--accent);
}

.preview-markdown pre {
  margin: 0.8em 0;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow-x: auto;
}
.preview-markdown pre code {
  padding: 0;
  background: none;
  border-radius: 0;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.6;
}

.preview-markdown table {
  border-collapse: collapse;
  margin: 0.8em 0;
  width: 100%;
  font-size: 13px;
}
.preview-markdown th,
.preview-markdown td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
}
.preview-markdown th {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.preview-markdown hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.2em 0;
}

.preview-markdown img {
  max-width: 100%;
  border-radius: 4px;
}

.preview-markdown input[type="checkbox"] {
  margin-right: 6px;
}

/* ─── Markdown Enhanced: Task Lists ─── */
.preview-markdown ul.contains-task-list {
  list-style: none;
  padding-left: 0.6em;
}
.preview-markdown .task-list-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

/* ─── Hex Dump (Binary Preview) ─── */
.preview-hexdump {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  overflow: auto;
  height: 100%;
}

.hexdump-header {
  display: flex;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  margin-bottom: 4px;
  font-weight: 600;
  white-space: pre;
}

.hexdump-line {
  display: flex;
  white-space: pre;
}
.hexdump-line:hover {
  background: var(--bg-tertiary);
}

.hex-offset {
  color: var(--accent);
  min-width: 80px;
  flex-shrink: 0;
}

.hex-values {
  color: var(--text-primary);
  min-width: 410px;
  flex-shrink: 0;
  letter-spacing: 0.3px;
}

.hex-ascii {
  color: var(--green, #4ade80);
  padding-left: 12px;
  border-left: 1px solid var(--border);
  flex-shrink: 0;
}

.hexdump-info {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ─── Preview Text (plain) ─── */
.preview-text-plain {
  margin: 0;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
  background: transparent;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
}

/* ─── Context Menu ─── */
.file-context-menu {
  position: fixed;
  z-index: 10000;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 0;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  display: none;
}
.file-context-menu.show {
  display: block;
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  transition: background 0.1s;
}
.context-menu-item:hover {
  background: var(--bg-tertiary);
}
.context-menu-item .cm-icon {
  width: 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}

.context-menu-separator {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* ───────────────────────────────────────────────────────────────────
 * M9 / 9.5 Markdown 扩展样式：mermaid 块 + 缩放模态 + Outline 浮窗
 * 默认按 cc-web 暗色主题；.light 类下用浅色 token
 * 作者：cc-web Frontend Team
 * ─────────────────────────────────────────────────────────────────── */

/* 内容容器：与现有 .preview-markdown 兼容；md-content 仅作为后处理锚点 */
.md-content { position: relative; }

/* Mermaid 块 */
.md-mermaid-wrapper {
  margin: 12px 0;
  padding: 12px;
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  text-align: center;
  transition: background 0.15s, border-color 0.15s;
}
.md-mermaid-wrapper:hover {
  background: rgba(99, 102, 241, 0.10);
  border-color: var(--accent);
}
.md-mermaid-wrapper svg { max-width: 100%; height: auto; }
.md-mermaid-error {
  text-align: left;
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.4);
}
.md-mermaid-err-title {
  color: var(--red);
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 13px;
}
.md-mermaid-err-msg {
  color: var(--text-secondary);
  font-size: 12px;
  margin-bottom: 8px;
}
.md-mermaid-err-source {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.3);
  padding: 8px;
  border-radius: 4px;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Mermaid 缩放模态 */
.md-mermaid-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.md-mmd-stage {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  overflow: hidden;
  user-select: none;
}
.md-mmd-svg-host {
  transform-origin: center center;
  will-change: transform;
}
.md-mmd-svg-host svg { display: block; }
.md-mmd-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.md-mmd-toolbar button {
  width: 32px;
  height: 28px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}
.md-mmd-toolbar button:hover {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}
.md-mmd-scale {
  color: var(--text-secondary);
  font-size: 12px;
  font-family: var(--font-mono);
  min-width: 48px;
  text-align: center;
}
.md-mmd-err {
  color: var(--red);
  background: rgba(239, 68, 68, 0.1);
  padding: 16px;
  border-radius: 8px;
  font-size: 13px;
}

/* Outline 浮动面板（挂在 .preview-content 内部，绝对定位） */
.md-outline-panel {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 20;
  width: 240px;
  max-height: calc(100% - 16px);
  display: flex;
  flex-direction: column;
  background: rgba(26, 26, 31, 0.96);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  backdrop-filter: blur(6px);
}
.md-outline-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  background: rgba(36, 36, 41, 0.7);
}
.md-outline-title {
  flex: 1;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.md-outline-count {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.md-outline-collapse-btn {
  width: 18px;
  height: 18px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.md-outline-collapse-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
.md-outline-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
  overflow-y: auto;
  flex: 1;
}
.md-outline-item {
  font-size: 12px;
  line-height: 1.4;
  padding: 4px 8px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-left: 2px solid transparent;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}
.md-outline-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
.md-outline-item.active {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

/* 收起态把手 */
.md-outline-handle {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 20;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 6px;
  background: rgba(26, 26, 31, 0.96);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.md-outline-handle:hover {
  background: var(--bg-tertiary);
  color: var(--accent);
  border-color: var(--accent);
}
.md-outline-handle-icon { line-height: 1; }
.md-outline-handle-count {
  font-size: 10px;
  font-family: var(--font-mono);
}

/* 浅色主题（cc-web 默认深色，此处预留 .light 切换支持） */
html.light .md-outline-panel {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(0, 0, 0, 0.1);
}
html.light .md-mermaid-wrapper {
  background: rgba(99, 102, 241, 0.04);
}
html.light .md-mermaid-err-source {
  background: rgba(0, 0, 0, 0.04);
}

/* ════════════════════════════════════════════════════════════════════
   M9 / 9.7 — Markup (.mu) Meta Bar / Comment Sidebar / Share Modal
   ════════════════════════════════════════════════════════════════════ */

/* .mu Banner & Meta Bar -------------------------------------------------- */
.md-mu-banner {
  margin: 0 0 8px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.5;
}
.md-mu-banner-warn {
  background: rgba(234, 179, 8, 0.12);
  border: 1px solid rgba(234, 179, 8, 0.4);
  color: #fde047;
}
.md-mu-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  margin: 0 0 12px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 6px;
  font-size: 12px;
}
.md-mu-meta-title {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 13px;
}
.md-mu-meta-tag {
  display: inline-block;
  padding: 1px 8px;
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.06);
  border: 1px solid rgba(var(--fg-rgb, 255, 255, 255), 0.08);
  border-radius: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}
.md-mu-body {
  /* body 的 markdown 样式继承 .preview-markdown */
}

/* mark[data-cmt] —— 评论锚点 -------------------------------------------- */
mark[data-cmt] {
  background: rgba(234, 179, 8, 0.28);
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.18s ease, box-shadow 0.18s ease;
}
mark[data-cmt]:hover {
  background: rgba(234, 179, 8, 0.45);
}
mark[data-cmt].flash {
  background: rgba(234, 179, 8, 0.7);
  box-shadow: 0 0 0 2px rgba(234, 179, 8, 0.5);
}

/* Quote 浮起气泡 --------------------------------------------------------- */
.md-quote-bubble {
  position: absolute;
  z-index: 9999;
  background: #1f2937;
  border: 1px solid rgba(99, 102, 241, 0.5);
  border-radius: 6px;
  padding: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.md-quote-bubble button {
  background: linear-gradient(180deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
}
.md-quote-bubble button:hover {
  background: linear-gradient(180deg, #818cf8 0%, #6366f1 100%);
}

/* Quote 迷你内联编辑器 ---------------------------------------------------
   选中文字后点击"评论这段"原位浮出，承接 quote 引用 + textarea + 发送/取消。
   作者: Claude
*/
.md-quote-editor {
  position: absolute;
  z-index: 10000;
  width: 320px;
  max-width: calc(100vw - 24px);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  background: var(--bg-secondary, #1f2937);
  border: 1px solid rgba(99, 102, 241, 0.5);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  color: var(--text-primary, #e2e8f0);
  font-size: 12px;
  animation: mdCommentPopoverFadeIn 120ms ease-out;
}
.md-quote-editor.flip-up { animation-name: mdCommentPopoverFadeInUp; }

.md-quote-editor-arrow {
  position: absolute;
  top: -7px;
  left: 24px;
  width: 12px;
  height: 12px;
  background: var(--bg-secondary, #1f2937);
  border-left: 1px solid rgba(99, 102, 241, 0.5);
  border-top: 1px solid rgba(99, 102, 241, 0.5);
  transform: translateX(-50%) rotate(45deg);
}
.md-quote-editor.flip-up .md-quote-editor-arrow {
  top: auto;
  bottom: -7px;
  border-left: none;
  border-top: none;
  border-right: 1px solid rgba(99, 102, 241, 0.5);
  border-bottom: 1px solid rgba(99, 102, 241, 0.5);
}

.md-quote-editor-quote {
  font-size: 11px;
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.08);
  border-left: 2px solid rgba(99, 102, 241, 0.6);
  padding: 4px 8px;
  border-radius: 0 4px 4px 0;
  max-height: 48px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.md-quote-editor-input {
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
  min-height: 60px;
  max-height: 200px;
  padding: 6px 8px;
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.04);
  border: 1px solid rgba(var(--fg-rgb, 255, 255, 255), 0.12);
  border-radius: 4px;
  color: inherit;
  font: inherit;
  font-size: 12px;
  line-height: 1.5;
  outline: none;
}
.md-quote-editor-input:focus {
  border-color: rgba(99, 102, 241, 0.7);
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.06);
}
.md-quote-editor-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}
.md-quote-editor-actions button {
  padding: 5px 12px;
  font-size: 12px;
  border-radius: 4px;
  border: 1px solid rgba(var(--fg-rgb, 255, 255, 255), 0.12);
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.04);
  color: inherit;
  cursor: pointer;
}
.md-quote-editor-actions button:hover:not(:disabled) {
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.08);
}
.md-quote-editor-actions button:disabled { opacity: 0.6; cursor: not-allowed; }
.md-quote-editor-submit {
  background: linear-gradient(180deg, #6366f1 0%, #4f46e5 100%) !important;
  border-color: rgba(99, 102, 241, 0.6) !important;
  color: #fff !important;
}
.md-quote-editor-submit:hover:not(:disabled) {
  background: linear-gradient(180deg, #818cf8 0%, #6366f1 100%) !important;
}

html.light .md-quote-editor {
  background: #ffffff;
  color: #1e293b;
  border-color: rgba(99, 102, 241, 0.45);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.18);
}
html.light .md-quote-editor-arrow {
  background: #ffffff;
  border-left-color: rgba(99, 102, 241, 0.45);
  border-top-color: rgba(99, 102, 241, 0.45);
}
html.light .md-quote-editor.flip-up .md-quote-editor-arrow {
  border-right-color: rgba(99, 102, 241, 0.45);
  border-bottom-color: rgba(99, 102, 241, 0.45);
}
html.light .md-quote-editor-quote {
  color: #4338ca;
  background: rgba(99, 102, 241, 0.08);
  border-left-color: rgba(99, 102, 241, 0.55);
}
html.light .md-quote-editor-input {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.16);
  color: #1e293b;
}
html.light .md-quote-editor-input:focus {
  border-color: rgba(99, 102, 241, 0.7);
  background: #ffffff;
}
html.light .md-quote-editor-actions button {
  background: rgba(15, 23, 42, 0.04);
  border-color: rgba(0, 0, 0, 0.12);
  color: #1e293b;
}
html.light .md-quote-editor-actions button:hover:not(:disabled) {
  background: rgba(15, 23, 42, 0.08);
}

/* ════════════════════════════════════════════════════════════════════
   Comment Sidebar 评论侧栏
   宿主：#filePreviewPanel（position:relative）
   ════════════════════════════════════════════════════════════════════ */
.md-comment-sidebar {
  position: absolute;
  top: 42px;             /* 让出 .preview-header */
  right: 0;
  bottom: 0;
  width: 320px;
  display: flex;
  flex-direction: column;
  background: rgba(15, 23, 42, 0.97);
  border-left: 1px solid var(--border, #1f2937);
  z-index: 50;
  font-size: 13px;
  color: var(--text-primary, #e2e8f0);
  transition: width 0.2s ease;
}
.md-comment-sidebar.collapsed {
  width: 36px;
}
.md-comment-sidebar.collapsed .md-comment-header,
.md-comment-sidebar.collapsed .md-comment-list,
.md-comment-sidebar.collapsed .md-comment-input-bar {
  display: none;
}
.md-comment-sidebar:not(.collapsed) .md-comment-toggle {
  display: none;
}
.md-comment-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  height: 100%;
  cursor: pointer;
  user-select: none;
  color: var(--text-muted, #94a3b8);
}
.md-comment-toggle:hover { color: var(--text-primary, #e2e8f0); }
.md-comment-toggle-icon { font-size: 18px; }
.md-comment-count {
  display: inline-block;
  min-width: 20px;
  padding: 1px 6px;
  background: #6366f1;
  color: #fff;
  border-radius: 10px;
  font-size: 11px;
  font-family: var(--font-mono);
  text-align: center;
}
.md-comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border, #1f2937);
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.02);
}
.md-comment-title {
  font-weight: 700;
  font-size: 13px;
}
.md-comment-collapse-btn {
  background: transparent;
  border: none;
  color: var(--text-muted, #94a3b8);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}
.md-comment-collapse-btn:hover { color: var(--text-primary, #e2e8f0); }

.md-comment-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
}
.md-comment-empty {
  text-align: center;
  color: var(--text-muted, #94a3b8);
  padding: 20px 8px;
  font-size: 12px;
}
.md-comment-divider {
  margin: 14px 0 8px;
  padding: 4px 0;
  border-top: 1px dashed rgba(var(--fg-rgb, 255, 255, 255), 0.08);
  color: var(--text-muted, #94a3b8);
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.md-comment-card {
  padding: 10px 12px;
  margin-bottom: 10px;
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.04);
  border: 1px solid rgba(var(--fg-rgb, 255, 255, 255), 0.08);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}
.md-comment-card:hover {
  background: rgba(99, 102, 241, 0.14);
  border-color: rgba(129, 140, 248, 0.55);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}
.md-comment-card.highlight {
  background: rgba(234, 179, 8, 0.18);
  border-color: rgba(234, 179, 8, 0.5);
}
.md-comment-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.md-comment-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}
.md-comment-name {
  font-weight: 600;
  font-size: 12px;
  color: var(--text-primary, #e2e8f0);
}
.md-comment-time {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted, #94a3b8);
}
.md-comment-inline-tag {
  font-size: 10px;
  color: #fde047;
  background: rgba(234, 179, 8, 0.18);
  padding: 0 5px;
  border-radius: 3px;
}
.md-comment-quote {
  margin: 6px 0;
  padding: 6px 10px;
  background: rgba(99, 102, 241, 0.1);
  border-left: 3px solid #818cf8;
  font-size: 11.5px;
  color: var(--text-muted, #cbd5e1);
  font-style: italic;
  border-radius: 0 4px 4px 0;
  line-height: 1.5;
}
.md-comment-body {
  font-size: 12px;
  color: var(--text-primary, #e2e8f0);
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.md-comment-deleted {
  color: var(--text-muted, #94a3b8);
  font-style: italic;
}
.md-comment-actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}
.md-comment-action {
  background: transparent;
  border: none;
  color: var(--text-muted, #94a3b8);
  font-size: 11px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  transition: color 0.12s ease, background 0.12s ease;
}
.md-comment-action:hover { color: #a5b4fc; background: rgba(99, 102, 241, 0.12); }
.md-comment-action[data-act="delete"] { color: rgba(252, 165, 165, 0.85); }
.md-comment-action[data-act="delete"]:hover { color: #fca5a5; background: rgba(239, 68, 68, 0.14); }
.md-comment-replies {
  margin-top: 10px;
  margin-left: 16px;
  padding-left: 12px;
  border-left: 2px solid rgba(99, 102, 241, 0.4);
}
.md-comment-replies .md-comment-card {
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.025);
  margin-bottom: 8px;
}

.md-comment-input-bar {
  border-top: 1px solid var(--border, #1f2937);
  padding: 10px 12px;
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.02);
}
.md-comment-quote-preview,
.md-comment-reply-preview {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  margin-bottom: 6px;
  background: rgba(234, 179, 8, 0.1);
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-muted, #94a3b8);
}
.md-comment-quote-label { font-weight: 600; color: #fde047; }
.md-comment-quote-text { flex: 1; font-style: italic; word-break: break-all; }
.md-comment-quote-clear,
.md-comment-reply-clear {
  background: transparent;
  border: none;
  color: var(--text-muted, #94a3b8);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}
.md-comment-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border, #1f2937);
  border-radius: 4px;
  color: var(--text-primary, #e2e8f0);
  font-size: 12px;
  padding: 6px 8px;
  font-family: inherit;
  resize: vertical;
  box-sizing: border-box;
}
.md-comment-input:focus {
  outline: none;
  border-color: #6366f1;
}
.md-comment-input-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 6px;
}
.md-comment-submit-btn {
  background: linear-gradient(180deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 5px 14px;
  font-size: 12px;
  cursor: pointer;
}
.md-comment-submit-btn:hover { background: linear-gradient(180deg, #818cf8 0%, #6366f1 100%); }
.md-comment-submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 评论侧栏存在时，preview-content 缩到不挡 -------------------------------
   注：M9 之后默认走 .md-comments-inline 嵌入模式，下面这两条仅在 m9-preview-window
   /preview 独立路由还在用 sidebar 时生效（保留兼容）。 */
.file-preview-panel:has(.md-comment-sidebar:not(.collapsed)) .preview-content {
  padding-right: 332px;
}
.file-preview-panel:has(.md-comment-sidebar.collapsed) .preview-content {
  padding-right: 48px;
}

/* ════════════════════════════════════════════════════════════════════
   Inline Comments（嵌入评论区）—— 评论作为正文下方的 section，与正文同滚动
   作者: Claude
   ════════════════════════════════════════════════════════════════════ */
.md-comments-inline {
  display: block;
  margin: 32px 0 0;
  padding: 18px 0 24px;
  border-top: 1px solid var(--border, #1f2937);
}
.md-comments-inline-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--text-primary, #e2e8f0);
}
.md-comments-inline-header .md-comment-title {
  font-weight: 700;
}
/* inline 模式下评论卡片去掉 sidebar 的浮层背景，整体显得更像文档延伸 */
.md-comments-inline .md-comment-list {
  flex: none;
  padding: 0;
  overflow: visible;
}
.md-comments-inline .md-comment-card {
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.03);
}
.md-comments-inline .md-comment-input-bar {
  border-top: 1px dashed rgba(var(--fg-rgb, 255, 255, 255), 0.08);
  background: transparent;
  margin-top: 14px;
  padding: 12px 0 0;
}
.md-comments-inline .md-comment-input {
  font-size: 13px;
  padding: 8px 10px;
}
@media (max-width: 720px) {
  .md-comments-inline { padding: 14px 0 20px; margin-top: 24px; }
}

/* ════════════════════════════════════════════════════════════════════
   M9 Fullscreen Preview Modal —— 同页面 90vw × 92vh 弹层
   交互：× / ESC / 点 overlay 关闭
   作者: Claude
   ════════════════════════════════════════════════════════════════════ */
.m9-fp-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  z-index: 9990;
  align-items: center;
  justify-content: center;
  animation: m9FpFadeIn 0.15s ease;
}
.m9-fp-overlay.show {
  display: flex;
}
@keyframes m9FpFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.m9-fp-dialog {
  width: 90vw;
  height: 92vh;
  max-width: 1400px;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary, #0f172a);
  border: 1px solid var(--border, #1f2937);
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  /* 修复 1：显式开启指针事件，避免上层 stacking context 影响顶栏按钮点击 */
  pointer-events: auto;
}
.m9-fp-overlay .m9-fp-header-right,
.m9-fp-overlay .m9-fp-btn {
  /* 修复 1：兜底，保证按钮一定可点击；transition/animation 不影响 hit-test */
  pointer-events: auto;
}
.m9-fp-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border, #1f2937);
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.03);
}
.m9-fp-header-left {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}
.m9-fp-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary, #e2e8f0);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.m9-fp-subtitle {
  font-size: 11px;
  color: var(--text-muted, #94a3b8);
  font-family: var(--font-mono, monospace);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.m9-fp-header-right {
  display: flex;
  gap: 6px;
  align-items: center;
}
.m9-fp-btn {
  background: transparent;
  border: 1px solid var(--border, #1f2937);
  color: var(--text-muted, #94a3b8);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  line-height: 1;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.m9-fp-btn:hover {
  color: var(--text-primary, #e2e8f0);
  border-color: var(--accent, #6366f1);
}
.m9-fp-btn.active {
  color: var(--accent, #818cf8);
  border-color: var(--accent, #6366f1);
  background: rgba(99, 102, 241, 0.12);
}
.m9-fp-fs { min-width: 32px; }
.m9-fp-close { font-size: 16px; padding: 2px 10px; }
.m9-fp-main {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}
.m9-fp-content {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 28px 48px 60px;
}
.m9-fp-content .preview-markdown,
.m9-fp-content .md-content {
  max-width: 860px;
  margin: 0 auto;
}
/* 2026-05-09 修复：A-/A/A+ 字号按钮失效
 * 根因：`.preview-markdown { font-size:14px }`（行 ~3393 区域）特异性高于
 * 仅靠继承的 `.m9-fp-content`，故必须显式针对 .preview-markdown / .md-content
 * 设置。.md-mu-body 内部同样依赖 .preview-markdown / .md-content（由
 * markdownExt 注入），故无需单独写规则。
 * 作者: Claude
 */
.m9-fp-content.m9-fs-sm,
.m9-fp-content.m9-fs-sm .preview-markdown,
.m9-fp-content.m9-fs-sm .md-content { font-size: 13px; }
.m9-fp-content.m9-fs-md,
.m9-fp-content.m9-fs-md .preview-markdown,
.m9-fp-content.m9-fs-md .md-content { font-size: 15px; }
.m9-fp-content.m9-fs-lg,
.m9-fp-content.m9-fs-lg .preview-markdown,
.m9-fp-content.m9-fs-lg .md-content { font-size: 17px; }
.m9-fp-content .md-comments-inline {
  max-width: 860px;
  margin: 32px auto 0;
}
/* 2026-05-09 修复：三横线 Outline 按钮失效
 * 根因：markdownExt.mountOutlinePanel 用 inline style 控制 panel/handle 的
 * display，必须 !important 才能被外层 .m9-outline-hidden 覆盖；同时要把
 * .md-outline-handle 也纳入隐藏（折叠态下 panel 被隐藏，handle 仍可见）。
 * 作者: Claude
 */
.m9-fp-overlay.m9-outline-hidden .md-outline-panel,
.m9-fp-overlay.m9-outline-hidden .md-outline-handle {
  display: none !important;
}
@media (max-width: 720px) {
  .m9-fp-dialog { width: 100vw; height: 100vh; border-radius: 0; }
  .m9-fp-content { padding: 16px; }
  .m9-fp-subtitle { display: none; }
}

/* M9 / 9.8 新窗口阅读模式：评论侧栏覆盖整个 main 区域顶端
   （.m9-preview-topbar 在外层 .m9-preview-view，main 区域内没有 preview-header） */
.m9-preview-view .m9-preview-main { position: relative; }
.m9-preview-view .md-comment-sidebar { top: 0; }
.m9-preview-main:has(.md-comment-sidebar:not(.collapsed)) .m9-preview-content {
  padding-right: 332px;
}
.m9-preview-main:has(.md-comment-sidebar.collapsed) .m9-preview-content {
  padding-right: 48px;
}

/* ════════════════════════════════════════════════════════════════════
   Share Modal
   ════════════════════════════════════════════════════════════════════ */
.md-share-warning-bar {
  margin: 0 0 12px;
  padding: 8px 12px;
  background: rgba(234, 179, 8, 0.12);
  border: 1px solid rgba(234, 179, 8, 0.4);
  border-radius: 4px;
  color: #fde047;
  font-size: 12px;
  line-height: 1.5;
}
.md-share-error-bar {
  margin: 0 0 8px;
  padding: 8px 10px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: 4px;
  color: #fca5a5;
  font-size: 12px;
}
.md-share-form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}
.md-share-form-row label {
  font-size: 11px;
  color: var(--text-muted, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.md-share-link-result {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 12px;
}
.md-share-link-result input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
}
.md-share-result-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  font-size: 12px;
  margin: 12px 0;
}
.md-share-result-meta dt {
  color: var(--text-muted, #94a3b8);
}
.md-share-result-meta dd {
  margin: 0;
  font-family: var(--font-mono);
  color: var(--text-primary, #e2e8f0);
}
.md-share-qr-host {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #fff;
  padding: 8px;
  border-radius: 6px;
  margin: 12px auto;
  width: 176px;
  min-height: 176px;
}
.md-share-manage-link {
  font-size: 12px;
  color: #818cf8;
  cursor: pointer;
  text-decoration: none;
}
.md-share-manage-link:hover { text-decoration: underline; }

.md-share-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.md-share-table th,
.md-share-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border, #1f2937);
}
.md-share-table th {
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.04);
  color: var(--text-muted, #94a3b8);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.md-share-table tr.revoked td { opacity: 0.5; }
.md-share-table code {
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 4px;
  border-radius: 3px;
}
.md-share-revoke-btn {
  background: transparent;
  border: 1px solid #ef4444;
  color: #f87171;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
}
.md-share-revoke-btn:hover { background: rgba(239, 68, 68, 0.15); }
.md-share-tag-revoked {
  display: inline-block;
  padding: 1px 6px;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-muted, #94a3b8);
  border-radius: 3px;
  font-size: 10px;
}

/* 浅色主题适配 ----------------------------------------------------------- */
html.light .md-comment-sidebar {
  background: rgba(255, 255, 255, 0.97);
  color: #1e293b;
}
html.light .md-comment-card {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}
html.light .md-comment-input {
  background: #fff;
  color: #1e293b;
  border-color: rgba(0, 0, 0, 0.15);
}
html.light .md-mu-meta-bar {
  background: rgba(99, 102, 241, 0.06);
}

/* ════════════════════════════════════════════════════════════
 * M9 / 9.8 Preview Window 阅读模式
 * 全屏布局：顶栏 48px + 主区 1fr，主区内部水平居中 760px
 * 作者: Claude
 * ══════════════════════════════════════════════════════════ */
.m9-preview-view {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary, #0f1419);
  color: var(--text-primary, #e6e6e6);
  z-index: 100;
  overflow: hidden;
}

.m9-preview-topbar {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 16px;
  gap: 8px;
  background: var(--bg-secondary, #1b1f26);
  border-bottom: 1px solid var(--border, rgba(255,255,255,.08));
  flex-shrink: 0;
}
.m9-preview-topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}
.m9-preview-topbar-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.m9-preview-logo {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  color: var(--accent, #f59e0b);
  margin-right: 4px;
}
.m9-preview-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #e6e6e6);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 360px;
}
.m9-preview-subtitle {
  font-size: 12px;
  color: var(--text-muted, #9ca3af);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 480px;
}

.m9-tb-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-primary, #e6e6e6);
  padding: 6px 10px;
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, border 0.15s;
  min-width: 32px;
}
.m9-tb-btn:hover {
  background: var(--bg-tertiary, rgba(255,255,255,.06));
  border-color: var(--border, rgba(255,255,255,.12));
}
.m9-tb-btn.active {
  background: var(--accent, #f59e0b);
  color: #1a1a1a;
  border-color: var(--accent, #f59e0b);
}

.m9-preview-main {
  flex: 1;
  overflow: auto;
  position: relative;
  background: var(--bg-primary, #0f1419);
}

.m9-preview-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  line-height: 1.7;
}
/* 2026-05-09 修复：/preview /s/<t> 新窗口模式同样要覆盖 .preview-markdown 的 font-size。
 * 根因同 .m9-fp-content 区块。.md-mu-body 内部最终落到 .md-content，规则会级联生效。
 * 作者: Claude
 */
.m9-preview-content.m9-fs-sm,
.m9-preview-content.m9-fs-sm .preview-markdown,
.m9-preview-content.m9-fs-sm .md-content { font-size: 14px; }
.m9-preview-content.m9-fs-md,
.m9-preview-content.m9-fs-md .preview-markdown,
.m9-preview-content.m9-fs-md .md-content { font-size: 16px; }
.m9-preview-content.m9-fs-lg,
.m9-preview-content.m9-fs-lg .preview-markdown,
.m9-preview-content.m9-fs-lg .md-content { font-size: 18px; }

.m9-preview-pre {
  background: var(--bg-secondary, #1b1f26);
  padding: 12px 16px;
  border-radius: 6px;
  overflow: auto;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, monospace);
  font-size: 13px;
  line-height: 1.5;
  white-space: pre;
}
.m9-preview-imgwrap {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
}
.m9-preview-imgwrap img {
  max-width: 100%;
  max-height: calc(100vh - 120px);
  object-fit: contain;
  background: rgba(0,0,0,.2);
  border-radius: 6px;
}
.m9-preview-pdf {
  width: 100%;
  height: calc(100vh - 48px);
  border: 0;
  display: block;
}
.m9-preview-fallback {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted, #9ca3af);
  font-size: 14px;
}

/* Outline 隐藏：m9-outline-hidden 时同时隐藏 markdownExt 注入的 .md-outline-panel/.md-outline-handle */
.m9-preview-view.m9-outline-hidden .md-outline-panel,
.m9-preview-view.m9-outline-hidden .md-outline-handle {
  display: none !important;
}

/* 错误页 */
.m9-error-page {
  margin: auto;
  max-width: 480px;
  padding: 48px 24px;
  text-align: center;
}
.m9-error-icon {
  font-size: 56px;
  font-weight: 700;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}
.m9-error-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--text-primary, #e6e6e6);
}
.m9-error-msg {
  font-size: 14px;
  color: var(--text-muted, #9ca3af);
  line-height: 1.6;
}

/* 密码框（独立 overlay，避免与主应用 modal-overlay 冲突） */
.m9-pw-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.m9-pw-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-secondary, #1b1f26);
  border: 1px solid var(--border, rgba(255,255,255,.1));
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
}
.m9-pw-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary, #e6e6e6);
}
.m9-pw-msg {
  font-size: 13px;
  color: var(--text-muted, #9ca3af);
  margin-bottom: 16px;
}
.m9-pw-input {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 12px;
  background: var(--bg-primary, #0f1419);
  border: 1px solid var(--border, rgba(255,255,255,.15));
  border-radius: 6px;
  color: var(--text-primary, #e6e6e6);
  font-size: 14px;
}
.m9-pw-input:focus {
  outline: none;
  border-color: var(--accent, #f59e0b);
}
.m9-pw-error {
  margin-top: 8px;
  color: #ef4444;
  font-size: 12px;
}
.m9-pw-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}
.m9-pw-actions button {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border, rgba(255,255,255,.15));
  background: transparent;
  color: var(--text-primary, #e6e6e6);
  font-size: 13px;
  cursor: pointer;
}
.m9-pw-actions .m9-pw-ok {
  background: var(--accent, #f59e0b);
  border-color: var(--accent, #f59e0b);
  color: #1a1a1a;
  font-weight: 600;
}
.m9-pw-actions button:hover { opacity: .9; }

/* Light theme overrides */
html.light .m9-preview-view {
  background: #ffffff;
  color: #1f2937;
}
html.light .m9-preview-topbar {
  background: #f3f4f6;
  border-bottom-color: rgba(0,0,0,.08);
}
html.light .m9-preview-title { color: #111827; }
html.light .m9-preview-subtitle { color: #6b7280; }
html.light .m9-tb-btn { color: #1f2937; }
html.light .m9-tb-btn:hover {
  background: rgba(0,0,0,.05);
  border-color: rgba(0,0,0,.1);
}
html.light .m9-preview-pre {
  background: #f3f4f6;
  color: #1f2937;
}
html.light .m9-pw-card {
  background: #ffffff;
  border-color: rgba(0,0,0,.1);
  color: #1f2937;
}
html.light .m9-pw-title { color: #111827; }
html.light .m9-pw-msg { color: #6b7280; }
html.light .m9-pw-input {
  background: #ffffff;
  color: #1f2937;
  border-color: rgba(0,0,0,.15);
}
html.light .m9-pw-actions button {
  color: #1f2937;
  border-color: rgba(0,0,0,.15);
}

/* 移动端：< 720px Outline 折叠为抽屉（覆盖 markdownExt 默认行为） */
@media (max-width: 720px) {
  .m9-preview-content { padding: 16px 14px 60px; }
  .m9-preview-title { max-width: 200px; }
  .m9-preview-subtitle { display: none; }
  .m9-preview-view .md-outline-panel {
    position: fixed;
    right: 0;
    top: 48px;
    bottom: 0;
    width: 80vw;
    max-width: 320px;
    z-index: 110;
    transform: translateX(100%);
    transition: transform 0.2s ease;
    box-shadow: -8px 0 24px rgba(0,0,0,.3);
  }
  .m9-preview-view:not(.m9-outline-hidden) .md-outline-panel {
    transform: translateX(0);
  }
}

/* ════════════════════════════════════════════════════════════════════
   评论 Mark 角标 + Popover —— M9.x 新增
   - mark[data-cmt][data-count]::after 渲染右上角徽章（DOM 干扰最小）
   - .md-comment-popover 浮层（点击 mark 弹出，展示该位置评论 + reply）
   作者: Claude
   ════════════════════════════════════════════════════════════════════ */

/* mark 自身需要 position:relative，让 ::after 徽章能绝对定位 */
mark[data-cmt] {
  position: relative;
}

/* 徽章（语义类名：md-comment-mark-badge）：
   实现方式：使用 ::after + attr(data-count) 渲染，DOM 干扰最小。
   紫蓝色圆角小标，与评论 quote 竖线 #818cf8 同色。 */
mark[data-cmt][data-count]::after {
  content: attr(data-count);
  position: absolute;
  top: -8px;
  right: -10px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background: #6366f1;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  line-height: 16px;
  text-align: center;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  pointer-events: none;     /* 点击穿透到 mark */
  box-sizing: border-box;
  letter-spacing: 0;
}
mark[data-cmt][data-count]:hover::after {
  background: #818cf8;
}

/* Popover 浮层 */
.md-comment-popover {
  position: fixed;
  z-index: 10000;
  min-width: 280px;
  max-width: 420px;
  max-height: 60vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary, #1f2937);
  border: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  color: var(--text-primary, #e2e8f0);
  font-size: 12px;
  animation: mdCommentPopoverFadeIn 120ms ease-out;
}
@keyframes mdCommentPopoverFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.md-comment-popover.flip-up {
  animation-name: mdCommentPopoverFadeInUp;
}
@keyframes mdCommentPopoverFadeInUp {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 箭头（默认指向上方，flip-up 时指向下方） */
.md-comment-popover-arrow {
  position: absolute;
  top: -7px;
  left: 24px;
  width: 12px;
  height: 12px;
  background: var(--bg-secondary, #1f2937);
  border-left: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  border-top: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  transform: translateX(-50%) rotate(45deg);
}
.md-comment-popover.flip-up .md-comment-popover-arrow {
  top: auto;
  bottom: -7px;
  border-left: none;
  border-top: none;
  border-right: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  border-bottom: 1px solid var(--border, rgba(255, 255, 255, 0.12));
}

.md-comment-popover-header {
  padding: 8px 12px;
  font-weight: 700;
  font-size: 12px;
  border-bottom: 1px solid var(--border, rgba(255, 255, 255, 0.08));
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.02);
  border-radius: 8px 8px 0 0;
  flex-shrink: 0;
}
.md-comment-popover-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 10px;
  min-height: 0;
}
.md-comment-popover-footer {
  padding: 6px 12px 8px;
  border-top: 1px solid var(--border, rgba(255, 255, 255, 0.08));
  text-align: right;
  flex-shrink: 0;
}
.md-comment-popover-jump {
  font-size: 11px;
  color: #a5b4fc;
  text-decoration: none;
  cursor: pointer;
}
.md-comment-popover-jump:hover { color: #c7d2fe; text-decoration: underline; }

/* popover 内 mini 卡片：复用 .md-comment-card 视觉，但缩紧 padding/字号且去除 hover 跳转感 */
.md-comment-popover .md-comment-card-mini {
  padding: 8px 10px;
  margin-bottom: 6px;
  cursor: default;
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.04);
}
.md-comment-popover .md-comment-card-mini:hover {
  background: rgba(var(--fg-rgb, 255, 255, 255), 0.06);
  border-color: rgba(var(--fg-rgb, 255, 255, 255), 0.12);
  box-shadow: none;
}
.md-comment-popover .md-comment-card-mini .md-comment-quote {
  font-size: 11px;
  padding: 4px 8px;
}
.md-comment-popover .md-comment-card-mini .md-comment-body {
  font-size: 12px;
}
.md-comment-popover .md-comment-card-mini .md-comment-replies {
  margin-top: 6px;
  margin-left: 10px;
  padding-left: 8px;
}

/* 浅色主题适配 */
html.light mark[data-cmt][data-count]::after {
  background: #6366f1;
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
html.light .md-comment-popover {
  background: #ffffff;
  color: #1e293b;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.18);
}
html.light .md-comment-popover-arrow {
  background: #ffffff;
  border-left-color: rgba(0, 0, 0, 0.12);
  border-top-color: rgba(0, 0, 0, 0.12);
}
html.light .md-comment-popover.flip-up .md-comment-popover-arrow {
  border-right-color: rgba(0, 0, 0, 0.12);
  border-bottom-color: rgba(0, 0, 0, 0.12);
}
html.light .md-comment-popover-header {
  background: rgba(0, 0, 0, 0.03);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}
html.light .md-comment-popover-footer {
  border-top-color: rgba(0, 0, 0, 0.08);
}
html.light .md-comment-popover .md-comment-card-mini {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}
html.light .md-comment-popover-jump { color: #4f46e5; }
html.light .md-comment-popover-jump:hover { color: #4338ca; }

/* ═══ M65 文件预览统一：媒体 / iframe / CSV 渲染器样式（file-preview.js） ═══ */
.fp-media {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  height: 100%;
  min-height: 160px;
  padding: 20px;
  box-sizing: border-box;
}
.fp-media-icon { font-size: 40px; opacity: 0.85; }
.fp-media-name {
  font-size: 13px;
  color: var(--text-secondary);
  word-break: break-all;
  text-align: center;
}
.fp-media-audio audio { width: 100%; max-width: 480px; }
.fp-media-video { padding: 8px; }
.fp-media-video video {
  max-width: 100%;
  max-height: 100%;
  border-radius: 6px;
  background: #000;
  outline: none;
}
.fp-frame {
  width: 100%;
  height: 100%;
  min-height: 240px;
  border: none;
  display: block;
  background: #fff;
}
.fp-csv-wrap {
  overflow: auto;
  max-height: 100%;
  padding: 8px;
}
.fp-csv-table {
  border-collapse: collapse;
  font-size: 12px;
  font-family: var(--font-mono, monospace);
  white-space: nowrap;
}
.fp-csv-table th,
.fp-csv-table td {
  border: 1px solid var(--border);
  padding: 3px 8px;
  text-align: left;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.fp-csv-table th {
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  color: var(--text-primary);
  z-index: 1;
}
.fp-csv-table td { color: var(--text-secondary); }
.fp-hint {
  padding: 6px 10px;
  font-size: 11px;
  color: var(--text-muted, var(--text-secondary));
}
.fp-empty {
  padding: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted, var(--text-secondary));
}
/* 预览容器承载 iframe/视频时撑满高度 */
.preview-content .fp-frame,
.m9-fp-content .fp-frame,
.m9-preview-content .fp-frame { height: 100%; }
.m9-fp-content .fp-media-video video,
.m9-preview-content .fp-media-video video { max-height: 80vh; }
/* M65：模式按钮禁用态（能力不足时禁用而非隐藏） */
.preview-actions button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ───────────────────────────────────────────────────────────────────
 * M85 明暗配色：浅色主题补丁（html.light 由 index.html <head> 内联脚本按偏好/系统设置切换）
 * 暗色专用的深底半透明面板与"亮调"文字色，在浅底上改用同色相深调，保证可读。
 * 作者：Claude
 * ─────────────────────────────────────────────────────────────────── */
html.light .md-outline-header { background: rgba(0, 0, 0, 0.03); }
html.light .md-outline-handle { background: rgba(255, 255, 255, 0.96); }
html.light .md-mermaid-err-source,
html.light .md-comment-input,
html.light .md-share-table code { background: rgba(0, 0, 0, 0.04); }
html.light .md-quote-bubble { background: #ffffff; box-shadow: 0 4px 16px rgba(15, 23, 42, 0.15); }
html.light .md-comment-sidebar { background: rgba(250, 250, 250, 0.97); }
html.light .md-mu-banner-warn,
html.light .md-comment-inline-tag,
html.light .md-comment-quote-label,
html.light .md-share-warning-bar { color: #a16207; }
html.light .md-quote-editor-quote,
html.light .md-comment-action:hover,
html.light .md-share-manage-link { color: #4f46e5; }
html.light .md-comment-action[data-act="delete"] { color: rgba(185, 28, 28, 0.85); }
html.light .md-comment-action[data-act="delete"]:hover,
html.light .md-share-error-bar,
html.light .md-share-revoke-btn { color: #b91c1c; }
html.light .tree-icon.dir { color: #b7791f; }
/* 分享复制提示（file-explorer.js showToast 写的是内联亮调色，只能 !important 覆盖） */
html.light .m9-share-copy-toast.ok { color: #15803d !important; }
html.light .m9-share-copy-toast.warn { color: #a16207 !important; }