:root {
  color-scheme: dark;
  --bg: #14161a;
  --bg-soft: #181b20;
  --bg-card: #1c2027;
  --line: #2a2f38;
  --accent: #6ea8fe;
  --accent-bright: #9cc2ff;
  --text: #dfe4ec;
  --text-dim: #8b94a3;
  --green: #3fb96f;
  --danger: #d9534f;
  --titlebar-start: #171b26;
  --titlebar-end: #12141c;
  --hover-bg: rgba(255,255,255,0.08);
  --hover-bg-soft: rgba(255,255,255,0.05);
  --accent-soft: rgba(110,168,254,0.14);
  --accent-faint: rgba(110,168,254,0.08);
  --on-accent: #0d1420;
  --doc-bg: #101216;
  --doc-overlay: rgba(16,18,22,0.92);
  --error-text: #ffb4b1;
  --warn-text: #ffcf8b;
  --warn-line: #6b5320;
  --input-bg: rgba(255,255,255,0.06);
  --floating-shadow: rgba(0,0,0,0.5);
  --scrollbar: #2a2f38;
  --scrollbar-hover: #3a4150;
}

:root[data-ui-theme="light"] {
  color-scheme: light;
  --bg: #edf1f6;
  --bg-soft: #f7f9fc;
  --bg-card: #ffffff;
  --line: #d4dbe6;
  --accent: #397bd3;
  --accent-bright: #245fae;
  --text: #1f2937;
  --text-dim: #667386;
  --green: #268a50;
  --danger: #c2413b;
  --titlebar-start: #ffffff;
  --titlebar-end: #edf2f8;
  --hover-bg: rgba(31,48,70,0.09);
  --hover-bg-soft: rgba(31,48,70,0.055);
  --accent-soft: rgba(57,123,211,0.14);
  --accent-faint: rgba(57,123,211,0.08);
  --on-accent: #ffffff;
  --doc-bg: #e7ecf2;
  --doc-overlay: rgba(255,255,255,0.92);
  --error-text: #b42318;
  --warn-text: #8a4b08;
  --warn-line: #d7a55a;
  --input-bg: #ffffff;
  --floating-shadow: rgba(42,55,76,0.18);
  --scrollbar: #c1c9d5;
  --scrollbar-hover: #a7b2c1;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hidden { display: none !important; }
.spacer { flex: 1; }

button,
select,
input[type="range"],
input[type="color"],
.titlebar,
.doctabs,
.annotation-toolbar,
.pane-head,
.pane-tabs,
.pane-toolbar,
.statusbar,
.sel-bar,
.modal-title,
.modal-actions {
  -webkit-user-select: none;
  user-select: none;
}

/* 标题栏 */
.titlebar {
  height: 44px;
  background: linear-gradient(135deg, var(--titlebar-start), var(--titlebar-end));
  display: flex; align-items: center;
  padding: 0 8px 0 16px;
  -webkit-app-region: drag;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
.titlebar-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand {
  display: flex; align-items: center; gap: 7px; flex-shrink: 0;
  font-size: 15px; font-weight: 700; color: var(--accent-bright); letter-spacing: 0.5px;
}
.brand-logo { width: 25px; height: 25px; border-radius: 6px; object-fit: contain; }
.brand-logo-light { display: none; }
:root[data-ui-theme="light"] .brand-logo-dark { display: none; }
:root[data-ui-theme="light"] .brand-logo-light { display: block; }
.brand-sub {
  color: var(--text-dim); font-weight: 400; font-size: 12px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.titlebar-spacer { flex: 1; }
.titlebar-controls { display: flex; gap: 2px; -webkit-app-region: no-drag; flex-shrink: 0; }
.win-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 30px;
  background: transparent; border: none; border-radius: 6px;
  color: var(--text-dim); font-size: 14px; cursor: pointer;
}
.win-btn:hover { background: var(--hover-bg); color: var(--text); }
.win-close:hover { background: var(--danger); color: #fff; }
.ui-theme-btn { margin-right: 6px; }
:root[data-ui-theme="light"] .ui-theme-sun,
:root:not([data-ui-theme="light"]) .ui-theme-moon { display: none; }

/* 文档 tab 条 */
.doctabs {
  height: 36px; flex-shrink: 0;
  display: flex; align-items: stretch;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 0 6px;
}
.doctabs-list { display: flex; align-items: stretch; gap: 4px; overflow-x: auto; overflow-y: hidden; flex: 1; }
.doctabs-list::-webkit-scrollbar { height: 0; }
.doctab {
  display: flex; align-items: center; gap: 8px;
  max-width: 220px; padding: 0 8px 0 14px;
  margin: 4px 0;
  background: transparent; border: 1px solid transparent; border-radius: 8px;
  color: var(--text-dim); font-size: 13px; cursor: pointer; flex-shrink: 0;
}
.doctab:hover { background: var(--hover-bg-soft); color: var(--text); }
.doctab.active { background: var(--bg-card); border-color: var(--line); color: var(--text); }
.doctab-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doctab.active .doctab-name { color: var(--accent-bright); font-weight: 600; }
.doctab-fmt {
  font-size: 10px; padding: 0 5px; border-radius: 5px; flex-shrink: 0;
  border: 1px solid var(--line); color: var(--text-dim); text-transform: uppercase;
}
.doctab-close {
  width: 18px; height: 18px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; border-radius: 5px;
  color: var(--text-dim); font-size: 11px; cursor: pointer;
}
.doctab-close:hover { background: var(--danger); color: #fff; }
.doctab-add {
  align-self: center; width: 28px; height: 26px; flex-shrink: 0;
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text-dim); font-size: 14px; cursor: pointer;
}
.doctab-add:hover { color: var(--accent); border-color: var(--accent); }

/* PDF 批注工具栏 */
.annotation-toolbar {
  min-height: 42px; flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  background: var(--bg-soft); border-bottom: 1px solid var(--line);
  overflow-x: auto; overflow-y: hidden;
}
.annotation-toolbar::-webkit-scrollbar { height: 4px; }
.annotation-title {
  color: var(--accent-bright); font-size: 12px; font-weight: 700; white-space: nowrap;
}
.annotation-tools { display: flex; align-items: center; gap: 3px; }
.toolbar-icon {
  width: 16px; height: 16px; flex: none; pointer-events: none;
  fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.annotation-tool {
  width: 28px; height: 28px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent; border-radius: 6px;
  color: var(--text-dim); font: inherit; cursor: pointer;
}
.annotation-tool:hover { color: var(--text); border-color: var(--line); }
.annotation-tool.active {
  background: var(--accent-soft); border-color: var(--accent); color: var(--accent-bright);
}
.annotation-divider { width: 1px; height: 22px; flex: none; background: var(--line); }
.annotation-color,
.annotation-width {
  display: flex; align-items: center; gap: 5px;
  color: var(--text-dim); font-size: 11px; white-space: nowrap;
}
.annotation-color input {
  width: 28px; height: 24px; padding: 2px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 6px; cursor: pointer;
}
.annotation-width .toolbar-icon { width: 14px; height: 14px; }
.annotation-width .mini-select { width: 42px; padding: 0 3px; }
.annotation-icon-btn,
.annotation-toggle-btn {
  width: 28px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
}
.annotation-status {
  margin-left: auto; color: var(--text-dim); font-size: 11px; white-space: nowrap;
}

/* 主体三栏 */
.reader-body { flex: 1; min-height: 0; display: flex; }

.side-pane {
  width: 250px; flex-shrink: 0;
  background: var(--bg-soft);
  display: flex; flex-direction: column;
  min-height: 0;
}
.side-left { border-right: 1px solid var(--line); }
.side-right { width: 320px; border-left: 1px solid var(--line); }
.side-pane.collapsed { display: none; }

.pane-head {
  height: 34px; flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 0 6px 0 14px;
  border-bottom: 1px solid var(--line);
}
.pane-head-title { font-size: 13px; font-weight: 600; color: var(--text); flex: 1; }
.icon-btn {
  width: 22px; height: 22px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; border-radius: 5px;
  color: var(--text-dim); font-size: 11px; cursor: pointer;
}
.icon-btn:hover { background: var(--hover-bg); color: var(--text); }

.pane-tabs {
  height: 34px; flex-shrink: 0;
  display: flex; align-items: center; gap: 2px;
  padding: 0 6px; border-bottom: 1px solid var(--line);
}
.pane-tab {
  height: 24px; padding: 0 12px;
  background: transparent; border: none; border-radius: 6px;
  color: var(--text-dim); font-size: 13px; cursor: pointer;
}
.pane-tab:hover { color: var(--text); background: var(--hover-bg-soft); }
.pane-tab.active { color: var(--on-accent); background: var(--accent); font-weight: 600; }
.pane-tabs-close { margin-left: auto; }

.pane-body { flex: 1; min-height: 0; overflow-y: auto; padding: 10px 12px; }
.pane-toolbar { margin-bottom: 10px; }
.note-pane-toolbar { display: flex; align-items: center; gap: 6px; }
.note-pane-toolbar .mini-select { flex: 1; min-width: 0; }

/* 目录 */
.toc-item {
  display: block; width: 100%; text-align: left;
  padding: 6px 8px; margin-bottom: 2px;
  background: transparent; border: none; border-radius: 6px;
  color: var(--text-dim); font-size: 12px; line-height: 1.5; cursor: pointer;
  font-family: inherit;
}
.toc-item:hover { background: var(--hover-bg); color: var(--text); }
.toc-item.current { color: var(--accent-bright); background: var(--accent-soft); }

/* 正文区 */
.doc-area { flex: 1; min-width: 0; position: relative; overflow: hidden; background: var(--doc-bg); }
.doc-view { position: absolute; inset: 0; touch-action: pan-x pan-y; }
.doc-view.inactive { display: none; }
.doc-view[data-theme="light"] { background: #f3f3f3; }
.doc-view[data-theme="sepia"] { background: #e8dcc4; }
.doc-view[data-theme="dark"] { background: #1b1b1b; }

.host-pdf { position: absolute; inset: 0; }
.epub-scroll { position: absolute; inset: 0; overflow-y: auto; }
.host-epub { max-width: 46em; margin: 0 auto; padding: 20px 24px 60px; }
.pinch-preview { will-change: transform; }

/* 正文列有 max-width，两侧留白会露出容器底色，需与适配器内的主题色一致 */
.doc-view[data-theme="light"] .epub-scroll { background: #ffffff; }
.doc-view[data-theme="sepia"] .epub-scroll { background: #f6ecd9; }
.doc-view[data-theme="dark"] .epub-scroll { background: #15171c; }

.doc-empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--text-dim);
}
.doc-empty-title { font-size: 16px; color: var(--text); }
.doc-empty-sub { font-size: 13px; }
.doc-empty .tb-btn { margin-top: 8px; }

.doc-overlay {
  position: absolute; inset: 0; z-index: 4;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  background: var(--doc-overlay);
  color: var(--text-dim); font-size: 13px; text-align: center; padding: 24px;
}
.doc-overlay.err { color: var(--error-text); }
.doc-overlay-title { font-size: 15px; color: var(--text); }
.doc-overlay-msg { max-width: 460px; line-height: 1.7; word-break: break-word; }
.prog-track { width: 220px; height: 4px; background: var(--line); border-radius: 3px; overflow: hidden; }
.prog-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.15s; }

/* 底部状态栏 */
.statusbar {
  height: 40px; flex-shrink: 0;
  display: flex; align-items: center; gap: 10px;
  padding: 0 12px;
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}
.statusbar-group { display: flex; align-items: center; gap: 4px; }
.pdf-view-controls { gap: 7px; }
.pdf-view-controls label {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-dim);
  font-size: 11px;
  white-space: nowrap;
}
.status-text { font-size: 12px; color: var(--text); white-space: nowrap; }
.status-text.dim { color: var(--text-dim); }
#statusMsg { overflow: hidden; text-overflow: ellipsis; max-width: 320px; }
#posLabel { max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
#zoomLabel { min-width: 44px; text-align: center; }
.fit-width-btn {
  width: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.progress-range { width: 140px; accent-color: var(--accent); cursor: pointer; }
.mini-select {
  height: 24px; padding: 0 6px;
  background: var(--bg-card); color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; font-size: 12px; cursor: pointer; outline: none;
}

@media (max-width: 1050px) {
  .statusbar { gap: 6px; padding-inline: 8px; }
  #statusMsg { display: none; }
  #posLabel { max-width: 90px; }
  .progress-range { width: auto; min-width: 50px; max-width: 100px; flex: 1; }
}

@media (max-width: 850px) {
  .pdf-view-controls label > span,
  #pctLabel { display: none; }
  .pdf-view-controls { gap: 4px; }
  .pdf-view-controls .mini-select { width: 52px; padding-inline: 3px; }
}

/* 按钮（沿用主窗口风格） */
.tb-btn {
  height: 28px; padding: 0 14px;
  background: var(--accent); color: var(--on-accent); border: none; border-radius: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap;
  font-family: inherit;
}
.tb-btn:hover { background: var(--accent-bright); }
.tb-btn.ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--line); }
.tb-btn.ghost:hover { color: var(--text); border-color: var(--accent); }
.tb-btn.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.tb-btn.danger:hover { background: var(--danger); color: #fff; }
.tb-btn.sm { height: 24px; padding: 0 10px; font-size: 12px; font-weight: 500; }
.tb-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* 列表（书签 / 笔记） */
.list { display: flex; flex-direction: column; gap: 8px; }
.list-item {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px;
}
.list-item-head { display: flex; align-items: center; gap: 8px; }
.list-item-label {
  flex: 1; min-width: 0;
  background: transparent; border: none; padding: 0; text-align: left;
  color: var(--accent-bright); font-size: 12px; font-weight: 600; cursor: pointer;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-family: inherit;
}
.list-item-label:hover { text-decoration: underline; }
.list-item-del {
  width: 20px; height: 20px; flex-shrink: 0;
  background: transparent; border: none; border-radius: 5px;
  color: var(--text-dim); font-size: 12px; cursor: pointer;
}
.list-item-del:hover { background: var(--danger); color: #fff; }
.list-item-edit {
  width: 20px; height: 20px; flex-shrink: 0;
  background: transparent; border: none; border-radius: 5px;
  color: var(--text-dim); font-size: 12px; cursor: pointer;
}
.list-item-edit:hover { background: var(--hover-bg); color: var(--text); }
.list-item-text {
  margin-top: 6px; font-size: 12px; line-height: 1.6; color: var(--text-dim);
  white-space: pre-wrap; word-break: break-word;
  max-height: 9.6em; overflow: hidden;
}
.rich-note-content { white-space: normal; }
.rich-note-content > :first-child { margin-top: 0; }
.rich-note-content > :last-child { margin-bottom: 0; }
.rich-note-content p,
.rich-note-content h2,
.rich-note-content h3,
.rich-note-content blockquote,
.rich-note-content pre,
.rich-note-content ul,
.rich-note-content ol { margin: 0.4em 0; }
.rich-note-content h2 { font-size: 1.3em; }
.rich-note-content h3 { font-size: 1.12em; }
.rich-note-content blockquote {
  padding: 6px 8px; background: var(--accent-faint);
  border-left: 3px solid var(--accent); color: var(--text-dim);
}
.rich-note-content pre,
.rich-note-content code { font-family: Consolas, "Cascadia Mono", monospace; }
.rich-note-content pre {
  overflow-x: auto; padding: 7px 8px;
  background: var(--input-bg); border-radius: 6px; white-space: pre-wrap;
}
.rich-note-content ul,
.rich-note-content ol { padding-left: 1.5em; }
.rich-note-image { position: relative; width: fit-content; max-width: 100%; margin: 8px 0; }
.rich-note-image img {
  display: block; max-width: 100%; max-height: 420px;
  border: 1px solid var(--line); border-radius: 7px; object-fit: contain;
}
.list-item-quote {
  margin-top: 6px; padding-left: 8px;
  border-left: 2px solid var(--line);
  font-size: 11px; line-height: 1.6; color: var(--text-dim);
  word-break: break-word;
  max-height: 4.8em; overflow: hidden;
}
.list-item-time { margin-top: 6px; font-size: 11px; color: var(--text-dim); }
.list-item-tags { margin-top: 6px; color: var(--accent); font-size: 11px; word-break: break-word; }
.list-item-kind {
  display: inline-block; padding: 0 6px; margin-left: 6px;
  font-size: 10px; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent);
}
.list-empty {
  color: var(--text-dim); font-size: 12px; line-height: 1.8;
  text-align: center; padding: 30px 6px; white-space: pre-line;
}

/* AI 面板 */
.ai-pane { display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.ai-status {
  font-size: 11px; line-height: 1.6; color: var(--text-dim);
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 8px; word-break: break-word; flex-shrink: 0;
}
.ai-status.warn { color: var(--warn-text); border-color: var(--warn-line); }
.ai-scope { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.ai-scope-label { font-size: 11px; color: var(--text-dim); flex: none; }
.ai-scope-select {
  background: var(--bg-card); border: 1px solid var(--line); color: var(--text);
  border-radius: 6px; padding: 3px 6px; font-size: 11px;
}
.ai-cost { font-size: 11px; color: var(--text-dim); margin-left: auto; text-align: right; }
.ai-visual-card {
  display: grid; grid-template-columns: 68px minmax(0, 1fr); gap: 8px;
  padding: 8px; border: 1px solid var(--accent); border-radius: 8px;
  background: var(--bg-card); flex-shrink: 0;
}
.ai-visual-card img {
  width: 68px; height: 76px; object-fit: contain;
  border: 1px solid var(--line); border-radius: 5px; background: #fff;
}
.ai-visual-body {
  min-width: 0; display: flex; flex-direction: column; gap: 3px;
  font-size: 11px; color: var(--text-dim);
}
.ai-visual-body strong { color: var(--text); font-size: 12px; }
.ai-visual-body span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ai-visual-actions {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 5px;
}
.ai-visual-actions .tb-btn { flex: 1 1 auto; }
.ai-quick { display: flex; flex-wrap: wrap; gap: 6px; flex-shrink: 0; }
.ai-quote {
  flex-shrink: 0; padding-left: 8px; border-left: 2px solid var(--accent);
  font-size: 11px; line-height: 1.6; color: var(--text-dim);
  max-height: 4.8em; overflow-y: auto; word-break: break-word;
}
.ai-output {
  flex: 1; min-height: 120px; overflow-y: auto;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 8px;
  padding: 10px; font-size: 13px; line-height: 1.75;
  white-space: normal; overflow-wrap: anywhere;
}
.ai-output.ai-output-plain { white-space: pre-wrap; }
.ai-output:empty::before { content: "AI 回复会显示在这里"; color: var(--text-dim); font-size: 12px; }
.ai-output.streaming { border-color: var(--accent); }
.ai-output > :first-child { margin-top: 0; }
.ai-output > :last-child { margin-bottom: 0; }
.ai-output p,
.ai-output ul,
.ai-output ol,
.ai-output blockquote,
.ai-output pre,
.ai-output table,
.ai-output hr { margin: 0.65em 0; }
.ai-output h1,
.ai-output h2,
.ai-output h3,
.ai-output h4,
.ai-output h5,
.ai-output h6 {
  margin: 0.9em 0 0.45em;
  color: var(--text);
  line-height: 1.35;
}
.ai-output h1 { font-size: 1.5em; }
.ai-output h2 { font-size: 1.32em; }
.ai-output h3 { font-size: 1.16em; }
.ai-output h4,
.ai-output h5,
.ai-output h6 { font-size: 1em; }
.ai-output ul,
.ai-output ol { padding-left: 1.7em; }
.ai-output li + li { margin-top: 0.2em; }
.ai-output blockquote {
  padding: 0.35em 0.75em;
  border-left: 3px solid var(--accent);
  background: var(--accent-faint);
  color: var(--text-dim);
}
.ai-output code {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: var(--input-bg);
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 0.92em;
}
.ai-output pre {
  max-width: 100%;
  overflow: auto;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--input-bg);
  white-space: pre;
  overflow-wrap: normal;
}
.ai-output pre code {
  padding: 0;
  background: transparent;
  white-space: inherit;
}
.ai-output table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}
.ai-output th,
.ai-output td {
  padding: 5px 8px;
  border: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}
.ai-output th { background: var(--accent-faint); }
.ai-output hr {
  border: 0;
  border-top: 1px solid var(--line);
}
.ai-output a {
  color: var(--accent-bright);
  text-decoration: underline;
  cursor: pointer;
}
.ai-output .ai-md-link-blocked {
  color: var(--text-dim);
  cursor: not-allowed;
  text-decoration-style: dotted;
}
.ai-md-image-placeholder {
  color: var(--text-dim);
  font-style: italic;
}
.ai-error { flex-shrink: 0; font-size: 12px; line-height: 1.6; color: var(--error-text); word-break: break-word; }
.ai-out-actions { display: flex; gap: 6px; flex-shrink: 0; flex-wrap: wrap; }
.ai-input { display: flex; gap: 6px; align-items: flex-end; flex-shrink: 0; }
.ai-input textarea {
  flex: 1; resize: none;
  background: var(--input-bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 8px; font-size: 12px; line-height: 1.6; outline: none;
  font-family: inherit;
}
.ai-input textarea:focus { border-color: var(--accent); }

.visual-select-overlay {
  position: absolute; inset: 0; z-index: 45; overflow: hidden;
  cursor: crosshair; touch-action: none;
  -webkit-user-select: none; user-select: none;
}
.visual-select-overlay.visual-select-capturing { opacity: 0; pointer-events: none; }
.visual-select-hint {
  position: absolute; top: 12px; left: 50%; z-index: 3;
  transform: translateX(-50%); max-width: calc(100% - 24px);
  padding: 7px 11px; border: 1px solid rgba(255,255,255,0.3);
  border-radius: 7px; background: rgba(20,20,20,0.9);
  color: #fff; font-size: 12px; white-space: nowrap; pointer-events: none;
}
.visual-select-box {
  position: absolute; z-index: 2; box-sizing: border-box;
  border: 2px solid #4ca3ff; background: rgba(76,163,255,0.08);
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.52); cursor: move;
}
.visual-select-handle {
  position: absolute; width: 12px; height: 12px;
  border: 2px solid #fff; border-radius: 50%; background: #1687ff;
}
.handle-nw { left: -7px; top: -7px; cursor: nwse-resize; }
.handle-ne { right: -7px; top: -7px; cursor: nesw-resize; }
.handle-se { right: -7px; bottom: -7px; cursor: nwse-resize; }
.handle-sw { left: -7px; bottom: -7px; cursor: nesw-resize; }
.visual-select-actions {
  position: absolute; left: 50%; bottom: 14px; z-index: 4;
  transform: translateX(-50%); display: flex; gap: 6px; padding: 6px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg-card);
  box-shadow: 0 8px 28px rgba(0,0,0,0.45); cursor: default;
}

/* 划选浮动工具条 */
.sel-bar {
  position: fixed; z-index: 40;
  display: flex; gap: 2px;
  padding: 4px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 6px 20px var(--floating-shadow);
}
.sel-btn {
  height: 24px; padding: 0 10px;
  background: transparent; border: none; border-radius: 6px;
  color: var(--text); font-size: 12px; cursor: pointer;
  font-family: inherit;
}
.sel-btn:hover { background: var(--accent); color: var(--on-accent); }

/* 提示条 */
.toast {
  position: fixed; left: 50%; bottom: 58px; transform: translateX(-50%);
  z-index: 60; max-width: 70vw;
  padding: 8px 16px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 20px;
  color: var(--text); font-size: 12px; line-height: 1.5;
  box-shadow: 0 6px 20px var(--floating-shadow);
  word-break: break-word;
}
.toast.err { border-color: var(--danger); color: var(--error-text); }

/* 书库选择弹窗 */
.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
}
.modal-box {
  width: 460px; max-width: 90vw;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px; padding: 18px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.45);
}
.modal-title { font-size: 15px; font-weight: 700; margin-bottom: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; }
.ai-confirm-box { width: 480px; }
.ai-confirm-summary {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 8px;
  margin-bottom: 12px;
}
.ai-confirm-summary > div {
  min-width: 0; padding: 10px 12px;
  background: var(--accent-faint); border: 1px solid var(--line); border-radius: 9px;
}
.ai-confirm-label {
  display: block; margin-bottom: 4px;
  color: var(--text-dim); font-size: 11px;
}
.ai-confirm-summary strong {
  display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--accent-bright); font-size: 13px;
}
.ai-confirm-notice {
  color: var(--text-dim); font-size: 12px; line-height: 1.7;
}
.pick-list { max-height: 48vh; overflow-y: auto; display: flex; flex-direction: column; gap: 4px; }
.pick-item {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 8px 10px; text-align: left;
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: 13px; cursor: pointer;
  font-family: inherit;
}
.pick-item:hover { border-color: var(--accent); background: var(--accent-faint); }
.pick-item:disabled { opacity: 0.45; cursor: not-allowed; }
.pick-item-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.note-editor-box {
  display: flex;
  width: 760px;
  max-height: 92vh;
  flex-direction: column;
}
.note-editor-fields { display: flex; flex-direction: column; gap: 10px; }
.note-type-chooser {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.note-type-choice {
  display: flex;
  min-height: 128px;
  padding: 18px;
  flex-direction: column;
  gap: 7px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
}
.note-type-choice:hover,
.note-type-choice:focus-visible {
  background: var(--accent-faint);
  border-color: var(--accent);
  outline: none;
}
.note-type-choice-title { font-size: 15px; font-weight: 700; }
.note-type-choice-desc { color: var(--text-dim); font-size: 12px; line-height: 1.55; }
.canvas-note-modal .note-editor-box {
  height: 94vh;
  width: min(1180px, 96vw);
  max-width: 96vw;
  max-height: 94vh;
  padding: 16px;
}
.canvas-note-modal .note-editor-fields {
  display: grid;
  min-height: 0;
  flex: 1;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.55fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 8px 10px;
  overflow: hidden;
}
.canvas-note-modal .modal-title,
.canvas-note-modal .modal-actions {
  flex: 0 0 auto;
}
.canvas-note-modal #noteRichEditor {
  display: flex;
  min-height: 0;
  grid-column: 1 / -1;
  flex-direction: column;
}
.canvas-note-modal #noteRichEditor .mixed-note-editor,
.canvas-note-modal #noteRichEditor .mixed-note-canvas {
  min-height: 0;
  flex: 1;
}
.canvas-note-modal .note-editor-quote {
  max-height: 3.2em;
  grid-column: 1 / -1;
  overflow: hidden;
}
.canvas-note-modal .note-editor-row {
  min-width: 0;
}
.canvas-note-modal .note-editor-pin {
  align-self: end;
  justify-self: end;
  white-space: nowrap;
}
@media (max-width: 680px) {
  .canvas-note-modal .note-editor-box {
    height: 98vh;
    max-height: 98vh;
  }
  .canvas-note-modal .note-editor-fields {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  }
  .canvas-note-modal #noteRichEditor {
    grid-column: 1;
  }
  .canvas-note-modal .note-editor-pin {
    justify-self: start;
  }
}
.note-editor-association {
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text-dim);
  font-size: 12px;
}
.note-editor-input {
  width: 100%; padding: 8px 10px;
  background: var(--input-bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; outline: none;
  font: inherit; font-size: 12px; line-height: 1.6;
}
textarea.note-editor-input { resize: vertical; min-height: 110px; }
.note-editor-input:focus { border-color: var(--accent); }
.rich-note-editor {
  overflow: hidden;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 9px;
}
.rich-note-editor:focus-within { border-color: var(--accent); }
.rich-note-toolbar {
  display: flex; align-items: center; gap: 4px; padding: 6px;
  background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.rich-note-style,
.rich-note-tool {
  height: 28px; background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 6px; color: var(--text); font: inherit;
}
.rich-note-style { padding: 0 7px; }
.rich-note-tool { min-width: 29px; padding: 0 7px; cursor: pointer; }
.rich-note-tool:hover { border-color: var(--accent); color: var(--accent-bright); }
.rich-note-tool-bold { font-weight: 700; }
.rich-note-tool-italic { font-style: italic; }
.rich-note-tool-underline { text-decoration: underline; }
.rich-note-tool-strikeThrough { text-decoration: line-through; }
.rich-note-surface {
  min-height: 220px; max-height: 42vh; padding: 12px 14px; overflow-y: auto;
  color: var(--text); font-size: 13px; line-height: 1.7; outline: none;
}
.rich-note-surface:empty::before {
  color: var(--text-dim); content: attr(data-placeholder); pointer-events: none;
}
.rich-note-surface .rich-note-image { cursor: default; }
.rich-note-image-remove {
  position: absolute; top: 6px; right: 6px; width: 26px; height: 26px; padding: 0;
  background: rgba(20,20,20,0.78); border: 1px solid rgba(255,255,255,0.35);
  border-radius: 50%; color: #fff; cursor: pointer; font-size: 18px; line-height: 22px;
}
.rich-note-image-remove:hover { background: var(--danger); }
.note-editor-quote {
  max-height: 120px; overflow-y: auto;
  padding: 8px 10px; border-left: 3px solid var(--accent);
  background: var(--accent-faint); color: var(--text-dim);
  font-size: 12px; line-height: 1.6; white-space: pre-wrap;
}
.note-editor-row { display: flex; align-items: flex-end; gap: 10px; }
.note-editor-row label {
  display: flex; flex-direction: column; gap: 5px;
  color: var(--text-dim); font-size: 11px;
}
.note-editor-row .mini-select { min-width: 140px; }
.note-editor-tags { flex: 1; }
.note-editor-pin { color: var(--text-dim); font-size: 12px; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }