:root {
  --bg: #14161a;
  --bg-soft: #181b20;
  --bg-card: #1c2027;
  --line: #2a2f38;
  --accent: #6ea8fe;
  --accent-bright: #9cc2ff;
  --text: #dfe4ec;
  --text-dim: #8b94a3;
  --green: #3fb96f;
  --danger: #d9534f;
  --amber: #d69e2e;
  --titlebar-start: #171b26;
  --titlebar-end: #12141c;
  --active-text: #0d1420;
  --hover-bg: rgba(255,255,255,0.06);
  --hover-strong: rgba(255,255,255,0.09);
  --input-bg: rgba(255,255,255,0.06);
  --disabled-bg: #2a2f38;
  --card-hover-line: #3a4350;
  --quote-bg: rgba(255,255,255,0.035);
  --quote-line: #4d5868;
  --modal-overlay: rgba(0,0,0,0.6);
  --scrollbar: #2a2f38;
  --scrollbar-hover: #3a4150;
}

:root[data-ui-theme="light"] {
  --bg: #f4f7fb;
  --bg-soft: #ffffff;
  --bg-card: #ffffff;
  --line: #d7dee9;
  --accent: #2563eb;
  --accent-bright: #1d4ed8;
  --text: #1f2937;
  --text-dim: #64748b;
  --green: #35ad69;
  --danger: #c93f3a;
  --amber: #a96c0c;
  --titlebar-start: #ffffff;
  --titlebar-end: #f2f5fa;
  --active-text: #ffffff;
  --hover-bg: rgba(15,23,42,0.055);
  --hover-strong: rgba(15,23,42,0.09);
  --input-bg: #f7f9fc;
  --disabled-bg: #e7ebf1;
  --card-hover-line: #9fb0c7;
  --quote-bg: #f7f9fc;
  --quote-line: #b2bfd0;
  --modal-overlay: rgba(15,23,42,0.36);
  --scrollbar: #c7d0dd;
  --scrollbar-hover: #aab6c7;
}

* { 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; }

/* 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 { flex-shrink: 0; margin-right: 24px; }
.brand {
  display: flex;
  align-items: center;
  gap: 7px;
  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; }

.tabs { display: flex; gap: 4px; -webkit-app-region: no-drag; }
.tab {
  height: 30px; padding: 0 18px;
  background: transparent; border: none; color: var(--text-dim);
  font-size: 14px; cursor: pointer; border-radius: 8px;
}
.tab:hover { color: var(--text); background: var(--hover-bg); }
.tab.active { color: var(--active-text); background: var(--accent); font-weight: 600; }

.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-strong); color: var(--text); }
.win-close:hover { background: var(--danger); color: #fff; }
.task-center-wrap { position: relative; }
.task-center-btn { position: relative; }
.task-center-badge {
  position: absolute;
  top: 1px;
  right: 1px;
  min-width: 15px;
  height: 15px;
  padding: 0 4px;
  border: 1px solid var(--titlebar-start);
  border-radius: 8px;
  background: var(--accent);
  color: var(--active-text);
  font-size: 9px;
  font-weight: 700;
  line-height: 13px;
  text-align: center;
}
.task-center-badge.has-result { background: var(--green); color: #07130b; }
.task-center-panel {
  position: absolute;
  top: 37px;
  right: -210px;
  z-index: 50;
  width: min(390px, calc(100vw - 20px));
  max-height: min(560px, calc(100vh - 58px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 18px 46px rgba(0,0,0,0.32);
  -webkit-app-region: no-drag;
}
.task-center-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 15px 12px;
  border-bottom: 1px solid var(--line);
}
.task-center-head > div { min-width: 0; flex: 1; }
.task-center-title { color: var(--text); font-size: 14px; font-weight: 700; }
.task-center-summary {
  margin-top: 3px;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.task-center-clear {
  flex: none;
  padding: 4px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 11px;
}
.task-center-clear:hover { color: var(--text); }
.task-center-list { min-height: 76px; overflow-y: auto; padding: 7px; }
.task-center-empty {
  padding: 26px 12px;
  color: var(--text-dim);
  font-size: 12px;
  text-align: center;
}
.task-center-item {
  padding: 10px;
  border-radius: 8px;
  border-left: 3px solid transparent;
}
.task-center-item:hover { background: var(--hover-bg); }
.task-center-item.complete { border-left-color: var(--green); }
.task-center-item.paused { border-left-color: var(--amber); }
.task-center-item.failed { border-left-color: var(--danger); }
.task-center-item-head,
.task-center-item-foot { display: flex; align-items: center; gap: 10px; min-width: 0; }
.task-center-name {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.task-center-state { flex: none; color: var(--text-dim); font-size: 10px; }
.task-center-item.complete .task-center-state { color: var(--green); }
.task-center-item.paused .task-center-state { color: var(--amber); }
.task-center-item.failed .task-center-state { color: var(--danger); }
.task-center-book {
  margin-top: 2px;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.task-center-progress {
  position: relative;
  height: 4px;
  margin: 8px 0 6px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--hover-strong);
}
.task-center-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 0.12s linear;
}
.task-center-item.complete .task-center-progress-fill { background: var(--green); }
.task-center-item.paused .task-center-progress-fill { background: var(--amber); }
.task-center-item.failed .task-center-progress-fill { background: var(--danger); }
.task-center-progress.indeterminate .task-center-progress-fill {
  width: 32% !important;
  animation: dl-progress-slide 1s ease-in-out infinite;
}
.task-center-status {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.task-center-item.failed .task-center-status { color: var(--danger); }
.task-center-actions { display: flex; flex: none; gap: 7px; }
.task-center-actions button {
  padding: 0;
  background: none;
  border: none;
  color: var(--accent-bright);
  cursor: pointer;
  font-size: 10px;
}
.task-center-actions button:hover { text-decoration: underline; }
.task-center-actions button[data-task-action="delete"] { color: var(--danger); }
.titlebar-icon {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}
.ui-theme-moon { display: none; }
:root[data-ui-theme="light"] .ui-theme-sun { display: none; }
:root[data-ui-theme="light"] .ui-theme-moon { display: block; }

/* 主区 */
#main { flex: 1; overflow-y: auto; padding: 20px; }
.tab-panel { min-height: 100%; }

/* 工具栏 */
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .status-bar { margin: 0; flex: 1; }
.spacer { flex: 1; }

.tb-btn {
  height: 30px; padding: 0 16px;
  background: var(--accent); color: var(--active-text); border: none; border-radius: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.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:disabled { opacity: 0.4; cursor: not-allowed; }
.tb-btn.in-lib { background: var(--disabled-bg); color: var(--text-dim); }
.tb-btn.sm { height: 24px; padding: 0 10px; font-size: 12px; }
.tb-btn.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.tb-btn.danger:hover { background: var(--danger); color: #fff; }

.status-bar { color: var(--text-dim); font-size: 13px; min-height: 18px; }

/* 浏览页头部常驻 */
.browse-head {
  position: sticky; top: -20px; z-index: 6;
  margin: -20px -20px 0; padding: 20px 20px 14px;
  background: linear-gradient(to bottom, var(--bg) 62%, transparent);
}
.browse-head .toolbar { margin-bottom: 0; }
.browse-head .status-bar { margin: 0; min-height: 0; }
.browse-head .status-bar:not(:empty) { margin-top: 8px; }
#browseGridView {
  min-height: calc(100vh - 84px);
  display: flex;
  flex-direction: column;
}

.source-select {
  height: 30px; padding: 0 12px;
  background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; font-size: 13px; cursor: pointer; outline: none;
}
.search-inline { display: flex; align-items: center; gap: 8px; }
#searchInput {
  width: 300px; height: 30px;
  background: var(--input-bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 0 14px;
  color: var(--text); font-size: 13px; outline: none;
}
#searchInput:focus { border-color: var(--accent); }

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}
.card { cursor: pointer; }
/* 封面比例五花八门（生成的是 4:5，书源的常见 0.65~0.75，还有方图和横图）。
   用 cover 铺满会按各自比例裁掉不同的边，同一套封面看上去缩放程度不一。
   改成 contain 让整张封面完整显示：模糊放大的同一张图由 ::before 垫在**底层**
   填掉留白。注意 ::before 会盖在父元素自己的背景之上，所以清晰的那层必须画在
   ::after 里，只靠 z-index 调不动父元素背景的层级。 */
.card-cover {
  position: relative;
  width: 100%; aspect-ratio: 3/4;
  background: var(--bg-card) center/contain no-repeat;
  border: 1px solid var(--line); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  padding: 10px; text-align: center;
  overflow: hidden;
  transition: transform 0.15s, border-color 0.15s;
}
.card-cover[data-cover-state="ready"]::before,
.card-cover[data-cover-state="ready"]::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: inherit;
  background-repeat: no-repeat;
  background-position: center;
  pointer-events: none;
}
.card-cover[data-cover-state="ready"]::before {
  z-index: 0;
  background-size: cover;
  filter: blur(12px) brightness(0.5);
  transform: scale(1.15);
}
.card-cover[data-cover-state="ready"]::after {
  z-index: 1;
  background-size: contain;
}
/* 占位文字与角标必须浮在两层背景之上 */
.card-cover > * { position: relative; z-index: 2; }
.card-cover.readable { cursor: pointer; }
.card-cover.readable:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.card:hover .card-cover:not([data-cover-state="pending"]) {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.card:hover .card-cover[data-cover-state="pending"] { border-color: var(--accent); }
.card-cover .ph { color: var(--text-dim); font-size: 12px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.card-title {
  margin-top: 8px; font-size: 13px; line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-sub { margin-top: 2px; font-size: 11px; color: var(--text-dim); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.card-date { margin-top: 2px; font-size: 11px; color: var(--text-dim); }
/* 状态与笔记标识叠在封面右下角，不再占用封面下方的一行。
   封面图案深浅不可控，故用不透明衬底而非半透明色块保证可读性 */
.card-cover-badges {
  position: absolute;
  bottom: 6px;
  display: flex; gap: 4px;
  max-width: calc(50% - 8px);
  pointer-events: none;
}
.card-cover-badges.start { left: 6px; }
.card-cover-badges.end { right: 6px; justify-content: flex-end; }
.card-badge {
  padding: 1px 7px;
  font-size: 10px; line-height: 1.6; border-radius: 10px;
  white-space: nowrap;
  background: var(--bg-card); color: var(--green);
  border: 1px solid rgba(63,185,111,0.45);
  box-shadow: 0 1px 3px rgba(0,0,0,0.35);
}
.card-badge.miss { color: var(--danger); border-color: rgba(217,83,79,0.5); }

.empty { grid-column: 1 / -1; text-align: center; color: var(--text-dim); padding: 60px 0; }

/* 聚合搜索：按源分组 */
.agg-list { display: flex; flex-direction: column; gap: 22px; }
.agg-list .empty { grid-column: auto; }
.agg-group { border-top: 1px solid var(--line); padding-top: 12px; }
.agg-group:first-child { border-top: none; padding-top: 0; }
.agg-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.agg-name { font-size: 14px; font-weight: 600; color: var(--text); }
.agg-count { font-size: 12px; color: var(--text-dim); }
.agg-count.err { color: var(--danger); }
.agg-more { margin-left: auto; }
.agg-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.agg-loading, .agg-msg { font-size: 12px; color: var(--text-dim); padding: 6px 0; }
.agg-err { color: var(--danger); }
.agg-group.agg-empty, .agg-group.agg-failed { opacity: 0.55; }

/* 分页 */
.pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  position: sticky;
  bottom: -20px;
  margin: auto -20px -20px;
  padding: 14px 20px 20px;
  background: linear-gradient(to top, var(--bg) 62%, transparent);
  z-index: 5;
}
.page-btn {
  padding: 8px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.page-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-bright); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-info { color: var(--text-dim); font-size: 13px; }
.page-jump { display: flex; align-items: center; gap: 8px; color: var(--text-dim); font-size: 13px; }
.jump-input {
  width: 64px;
  padding: 7px 8px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  font-size: 13px;
  text-align: center;
}
.jump-input:focus { outline: none; border-color: var(--accent); }
.jump-input::-webkit-outer-spin-button,
.jump-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* 详情 */
.back-btn {
  margin-bottom: 14px; height: 30px; padding: 0 14px;
  background: transparent; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 8px; font-size: 13px; cursor: pointer;
}
.back-btn:hover { color: var(--text); border-color: var(--accent); }
.detail-head { display: flex; gap: 20px; margin-bottom: 20px; }
.detail-cover {
  width: 150px; height: 200px; flex-shrink: 0;
  background: var(--bg-card) center/cover no-repeat;
  border: 1px solid var(--line); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; padding: 12px; text-align: center;
}
.detail-cover .ph { color: var(--text-dim); font-size: 12px; line-height: 1.5; }
.detail-meta { flex: 1; min-width: 0; }
.detail-title { font-size: 20px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.detail-authors { color: var(--accent-bright); font-size: 13px; margin-bottom: 10px; }
.meta-row { font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.meta-row b { color: var(--text); font-weight: 600; margin-right: 8px; }
.meta-row a { color: var(--accent); text-decoration: none; word-break: break-all; }
.meta-row a:hover { text-decoration: underline; }
.add-lib-btn { margin-top: 10px; }
.add-lib-hint { margin-top: 6px; font-size: 12px; color: var(--text-dim); }

.section-title { font-size: 14px; font-weight: 700; color: var(--accent-bright); margin: 18px 0 10px; }
.brief-panel {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px; font-size: 13px; line-height: 1.7; color: var(--text-dim);
  max-height: 220px; overflow-y: auto;
}

/* 下载区 */
.download-box { display: flex; flex-direction: column; gap: 10px; }
.dl-loading, .dl-error { color: var(--text-dim); font-size: 13px; padding: 10px 0; }
.dl-error { color: var(--danger); }
.retry-btn { margin-left: 10px; background: none; border: none; color: var(--accent); cursor: pointer; font-size: 13px; }
.dl-files { display: flex; flex-direction: column; gap: 6px; }
.dl-panel-name { font-size: 13px; color: var(--text-dim); margin-bottom: 4px; }
.dl-file-row {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px;
}
.dl-file-name { flex: 1; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl-fmt { font-size: 11px; color: var(--accent); border: 1px solid var(--accent); border-radius: 6px; padding: 0 6px; flex-shrink: 0; }
.copy-btn, .dl-btn {
  height: 24px; padding: 0 10px; flex-shrink: 0;
  background: transparent; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 6px; font-size: 12px; cursor: pointer;
}
.copy-btn:hover, .dl-btn:hover { color: var(--text); border-color: var(--accent); }
.dl-btn { background: var(--accent); color: var(--active-text); border: none; }
.dl-btn:hover { background: var(--accent-bright); color: var(--active-text); }
.dl-btn.downloaded { background: var(--green); color: #07130b; border: none; font-weight: 600; }
.dl-btn.downloaded:hover { background: #61cc88; color: #07130b; }
.dl-btn.copied, .copy-btn.copied { color: var(--green); border-color: var(--green); }
.dl-progress {
  order: 10;
  flex: 1 0 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}
.dl-progress-track {
  position: relative;
  flex: 1;
  height: 5px;
  overflow: hidden;
  background: var(--hover-strong);
  border-radius: 4px;
}
.dl-progress-fill {
  width: 0;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 0.12s linear;
}
.dl-progress-label {
  min-width: 130px;
  color: var(--text-dim);
  font-size: 10px;
  text-align: right;
  white-space: nowrap;
}
.dl-progress.indeterminate .dl-progress-fill {
  width: 32%;
  animation: dl-progress-slide 1s ease-in-out infinite;
}
.dl-progress.failed .dl-progress-fill { background: var(--danger); }
.dl-progress.failed .dl-progress-label { color: var(--danger); }
@keyframes dl-progress-slide {
  from { transform: translateX(-110%); }
  to { transform: translateX(340%); }
}
.dl-link-row { display: flex; align-items: center; gap: 10px; font-size: 13px; padding: 4px 0; }
.dl-link-row a { color: var(--accent); text-decoration: none; }
.dl-link-row a:hover { text-decoration: underline; }

/* 书库 */
.lib-card-actions { display: flex; align-items: center; gap: 5px; margin-top: 8px; flex-wrap: wrap; }
.lib-card-actions button {
  flex: 1; height: 26px; font-size: 12px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--text-dim);
}
.lib-card-actions .icon-action {
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 28px; width: 28px; padding: 0;
}
.lib-card-actions .icon-action svg {
  width: 15px; height: 15px; fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
  pointer-events: none;
}
.lib-card-actions button:hover { color: var(--text); border-color: var(--accent); }
.lib-card-actions .open-btn { background: var(--accent); color: var(--active-text); border: none; font-weight: 600; }
.lib-card-actions .open-btn:hover { background: var(--accent-bright); }
.lib-card-actions .open-btn:disabled { background: var(--disabled-bg); color: var(--text-dim); cursor: not-allowed; }
.card-badge.note-count {
  color: var(--accent-bright);
  border-color: rgba(110,168,254,0.5);
}
.card-badge.annotation-count {
  color: var(--amber);
  border-color: rgba(214,158,46,0.55);
}

/* 书库多选 */
.library-selection-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: -6px 0 16px;
  padding: 8px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.library-select-all {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 13px;
  cursor: pointer;
}
.tb-btn.ghost.active { color: var(--accent-bright); border-color: var(--accent); }
/* 定位上下文不能只在 select-mode 下建立：退出多选是同步移除类名，
   而重绘要等 IPC 返回，其间残留的复选框会失去定位祖先，
   直接按视口坐标飞到左上角标题上闪一下 */
.card { position: relative; }
.card-select {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 2;
  display: flex;
  cursor: pointer;
}
/* 用投影而不是衬底色块保证在浅色封面上也看得见：
   加 padding + 背景板会让复选框看起来套了一圈很粗的边框 */
.card-select input {
  margin: 0;
  cursor: pointer;
  filter: drop-shadow(0 0 1px rgba(0,0,0,0.9)) drop-shadow(0 1px 2px rgba(0,0,0,0.55));
}
/* 退出多选后重绘要等 IPC 返回，这期间立刻藏掉残留的复选框 */
#libraryTab:not(.select-mode) .card-select { display: none; }
#libraryTab.select-mode .card-cover { transition: none; }
#libraryTab.select-mode .card:hover .card-cover { transform: none; }
#libraryTab.select-mode .card.selected .card-cover { border-color: var(--accent); }
#libraryTab.select-mode .card.selected .card-title { color: var(--accent-bright); }
.library-bulk-preview {
  margin: 8px 0 0;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.7;
}

/* 书库组织 */
.library-page {
  min-height: calc(100vh - 84px);
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 22px;
}
.library-sidebar {
  align-self: start;
  position: sticky;
  top: 0;
  max-height: calc(100vh - 84px);
  min-width: 0;
  padding: 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.library-sidebar-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px 8px;
}
.library-sidebar-head h2 { flex: 1; font-size: 14px; }
.library-filter {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 7px 9px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 7px;
  color: var(--text-dim);
  font: inherit;
  font-size: 12px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}
.library-filter:hover { color: var(--text); background: var(--hover-bg); }
.library-filter.active { color: var(--accent-bright); background: rgba(110,168,254,0.11); }
.library-filter-list { display: flex; flex-direction: column; gap: 1px; }
.library-sidebar-section {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.library-sidebar-section-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px 7px;
}
.library-sidebar-section-head h3 { flex: 1; }
.library-sidebar-section h3 {
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 600;
}
/* 行内操作按钮绝对定位：留在文档流里会占掉 47px，
   使书架和标签的选中高亮比「全部书籍」等静态项窄一截 */
.library-shelf-row,
.library-tag-row { position: relative; display: flex; align-items: center; }
.library-shelf-row .library-filter,
.library-tag-row .library-filter { flex: 1; padding-right: 48px; }
.library-shelf-actions,
.library-tag-actions {
  position: absolute;
  right: 3px;
  display: flex;
  opacity: 0;
  pointer-events: none;
}
.library-shelf-row:hover .library-shelf-actions,
.library-shelf-row:focus-within .library-shelf-actions,
.library-tag-row:hover .library-tag-actions,
.library-tag-row:focus-within .library-tag-actions { opacity: 1; pointer-events: auto; }
.library-shelf-actions .notes-icon-btn,
.library-tag-actions .notes-icon-btn { width: 22px; height: 22px; font-size: 12px; }
.library-filter-count { float: right; color: var(--text-dim); }
.library-content { min-width: 0; }
.library-search {
  display: flex;
  min-width: min(320px, 100%);
  align-items: center;
  gap: 7px;
}
.library-search input {
  width: 230px;
  height: 30px;
  padding: 0 11px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: 12px;
  outline: none;
}
.library-search input:focus { border-color: var(--accent); }
/* 标签叠在封面顶部右侧：左上角要留给多选复选框 */
.library-card-tags {
  position: absolute;
  top: 6px; right: 6px;
  display: flex;
  justify-content: flex-end;
  gap: 4px;
  max-width: calc(100% - 42px);
  overflow: hidden;
  pointer-events: none;
}
.library-card-tag {
  min-width: 0;
  padding: 1px 6px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid rgba(110,168,254,0.45);
  color: var(--accent-bright);
  font-size: 10px;
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0,0,0,0.35);
}
.library-organize-form { display: flex; flex-direction: column; gap: 12px; }
.library-organize-form label { color: var(--text-dim); font-size: 12px; }
.library-organize-form select,
.library-organize-form input[type="text"] {
  width: 100%;
  height: 34px;
  margin-top: 5px;
  padding: 0 10px;
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
  outline: none;
}
.library-organize-form select:focus,
.library-organize-form input[type="text"]:focus { border-color: var(--accent); }
.library-tag-picker {
  position: relative;
  width: 100%;
  margin-top: 5px;
  color: var(--text);
  font-size: 13px;
}
.library-tag-picker summary {
  height: 34px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--input-bg);
  cursor: pointer;
  list-style-position: inside;
}
.library-tag-picker[open] summary { border-color: var(--accent); }
.library-tag-options {
  max-height: 190px;
  margin-top: 4px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  box-shadow: 0 8px 24px rgba(0,0,0,0.22);
}
.library-tag-option {
  display: flex !important;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  color: var(--text) !important;
  cursor: pointer;
}
.library-tag-option:hover { background: var(--hover-bg); }
.library-tag-option span:nth-child(2) { flex: 1; }
.library-tag-empty { padding: 12px; color: var(--text-dim); text-align: center; }
.local-import-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.local-import-label { color: var(--text-dim); font-size: 12px; font-weight: 600; }
.local-import-choice {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  color: var(--text);
  cursor: pointer;
}
.local-import-section input[type="text"] {
  width: 100%;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}
.local-import-section input[type="text"]:focus { border-color: var(--accent); }
.about-formats {
  display: grid;
  gap: 10px;
  width: 100%;
  margin-top: 10px;
  color: var(--text);
  line-height: 1.55;
}
.about-format-label {
  display: inline-block;
  min-width: 120px;
  margin-right: 12px;
  color: var(--text-dim);
  font-weight: 600;
}

/* 我的笔记 */
.notes-page {
  min-height: calc(100vh - 84px);
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 22px;
}
.notes-sidebar {
  align-self: start;
  position: sticky;
  top: 0;
  min-width: 0;
  padding: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.notes-sidebar-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px 8px;
}
.notes-sidebar-head h2 { flex: 1; font-size: 14px; }
.notes-icon-btn {
  width: 25px;
  height: 25px;
  flex: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 15px;
}
.notes-icon-btn:hover { color: var(--accent-bright); border-color: var(--line); }
.notes-icon-btn.danger:hover { color: var(--danger); }
.notes-collection-row {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
}
.notes-collection {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 8px 10px;
  background: transparent;
  border: none;
  border-radius: 7px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.notes-collection:hover { background: var(--hover-bg); color: var(--text); }
.notes-collection.active { background: rgba(110,168,254,0.14); color: var(--accent-bright); }
.notes-collection-actions { display: none; align-items: center; }
.notes-collection-row:hover .notes-collection-actions,
.notes-collection-row:focus-within .notes-collection-actions { display: flex; }
.notes-collection-row .notes-collection { flex: 1; }

.notes-content { min-width: 0; }
.notes-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.notes-search { display: flex; align-items: center; gap: 8px; flex: 1; }
#notesSearchInput {
  width: min(480px, 100%);
  height: 32px;
  padding: 0 13px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  outline: none;
}
#notesSearchInput:focus { border-color: var(--accent); }
.notes-type-tabs {
  display: inline-flex;
  gap: 3px;
  margin-bottom: 12px;
  padding: 3px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 9px;
}
.notes-type-tab {
  min-width: 84px;
  height: 30px;
  padding: 0 14px;
  background: transparent;
  border: 0;
  border-radius: 7px;
  color: var(--text-dim);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
.notes-type-tab:hover { color: var(--text); }
.notes-type-tab.active {
  background: var(--accent);
  color: var(--on-accent, #fff);
}
.notes-tag-filters {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 3px 0 10px;
  flex-wrap: wrap;
}
.notes-tags-label { margin-right: 2px; color: var(--text-dim); font-size: 12px; }
.notes-content > .status-bar { margin-bottom: 10px; }
.notes-list {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 310px), 1fr));
  gap: 12px;
}
.notes-empty {
  grid-column: 1 / -1;
  padding: 70px 20px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--text-dim);
  text-align: center;
  font-size: 13px;
}
.note-card {
  display: flex;
  min-width: 0;
  min-height: 300px;
  padding: 16px 18px 12px;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.note-card:hover { border-color: var(--card-hover-line); }
.note-card.pinned { border-left: 3px solid var(--accent); }
.note-card-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 10px; }
.note-title-box { flex: 1; min-width: 0; }
.note-book-title {
  overflow: hidden;
  color: var(--accent-bright);
  font-size: 14px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.note-book-authors {
  margin-top: 2px;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.note-title { margin-top: 3px; color: var(--text-dim); font-size: 12px; }
.note-badges { display: flex; align-items: flex-end; flex-direction: column; gap: 5px; flex: none; }
.note-badge {
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 10px;
  white-space: nowrap;
}
.note-badge.source { background: var(--input-bg); color: var(--text-dim); }
.note-badge.pinned { background: rgba(110,168,254,0.15); color: var(--accent-bright); }
.note-badge.type.reading { background: rgba(99, 179, 237, 0.14); color: #63b3ed; }
.note-badge.type.canvas { background: rgba(183, 148, 244, 0.16); color: #b794f4; }
.note-quote {
  margin: 8px 0 10px;
  padding: 8px 11px;
  background: var(--quote-bg);
  border-left: 2px solid var(--quote-line);
  color: var(--text-dim);
  font-size: 12px;
  font-style: normal;
  line-height: 1.65;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.note-text {
  max-height: 176px;
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  line-height: 1.75;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.note-text .rich-note-image img { max-height: 120px; }
.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: 0.45em 0; }
.rich-note-content h2 { font-size: 1.35em; }
.rich-note-content h3 { font-size: 1.15em; }
.rich-note-content blockquote {
  padding: 7px 10px;
  background: var(--quote-bg);
  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: 8px 10px;
  background: var(--input-bg);
  border-radius: 7px;
  white-space: pre-wrap;
}
.rich-note-content ul,
.rich-note-content ol { padding-left: 1.6em; }
.rich-note-image {
  position: relative;
  width: fit-content;
  max-width: 100%;
  margin: 10px 0;
}
.rich-note-image img {
  display: block;
  max-width: 100%;
  max-height: 520px;
  border: 1px solid var(--line);
  border-radius: 8px;
  object-fit: contain;
}
.note-context {
  max-height: 86px;
  margin-top: 9px;
  padding-top: 8px;
  overflow: hidden;
  border-top: 1px dashed var(--line);
  color: var(--text-dim);
  font-size: 11px;
  line-height: 1.55;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.note-tags { display: flex; gap: 5px; margin-top: 10px; flex-wrap: wrap; }
.note-tag {
  padding: 2px 8px;
  background: rgba(110,168,254,0.08);
  border: 1px solid rgba(110,168,254,0.2);
  border-radius: 10px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 11px;
}
.note-tag:hover, .note-tag.active {
  background: rgba(110,168,254,0.2);
  border-color: rgba(110,168,254,0.45);
  color: var(--accent-bright);
}
.note-card-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 11px;
  padding-top: 9px;
  border-top: 1px solid var(--line);
  margin-top: auto;
}
.note-meta {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.note-actions { display: flex; gap: 5px; }
.note-action {
  padding: 3px 8px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 11px;
}
.note-action:hover { border-color: var(--line); color: var(--text); }
.note-action.open { color: var(--accent-bright); }
.note-action.window { color: var(--accent-bright); }
.note-action.delete:hover { color: var(--danger); }
.note-edit-form { display: flex; flex-direction: column; gap: 10px; }
.note-type-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.note-type-choice {
  position: relative;
  display: flex;
  min-height: 116px;
  padding: 16px;
  flex-direction: column;
  gap: 6px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 11px;
  cursor: pointer;
}
.note-type-choice:has(input:checked) {
  background: rgba(110,168,254,0.1);
  border-color: var(--accent);
}
.note-type-choice input { position: absolute; top: 12px; right: 12px; }
.note-type-choice-title { color: var(--text); font-size: 14px; font-weight: 700; }
.note-type-choice-desc { color: var(--text-dim); font-size: 12px; line-height: 1.55; }
.note-canvas-preview {
  position: relative;
  min-height: 132px;
  margin-top: 2px;
  padding: 12px;
  background-color: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #445;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.025);
}
.note-canvas-preview.template-grid {
  background-image:
    linear-gradient(#e4eaf1 1px, transparent 1px),
    linear-gradient(90deg, #e4eaf1 1px, transparent 1px);
  background-size: 20px 20px;
}
.note-canvas-preview.template-lined {
  background-image: linear-gradient(#dce5ef 1px, transparent 1px);
  background-size: 100% 24px;
}
.note-canvas-preview.template-dots {
  background-image: radial-gradient(#cbd5df 1px, transparent 1px);
  background-size: 18px 18px;
}
.note-canvas-preview.template-pdf {
  background: linear-gradient(145deg, #fff 0 68%, #f1f3f6 68% 100%);
}
.note-edit-form label { color: var(--text-dim); font-size: 12px; min-width: 0; }
/* 必须排除 .canvas-note-root 与 .ql-toolbar 内部：画布工具栏和富文本工具栏都是
   .note-edit-form 的后代，不加 :not() 的话工具栏里的下拉会被当成表单控件，吃到
   margin-top 与 width:100%，表现为工具栏凭空高出 5px、各分组高度对不齐。 */
.note-edit-form textarea:not(.canvas-note-root textarea):not(.ql-toolbar textarea),
.note-edit-form select:not(.canvas-note-root select):not(.ql-toolbar select) {
  width: 100%;
  margin-top: 5px;
  padding: 8px 10px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  outline: none;
  resize: vertical;
}
/* 关联书籍 / 笔记本：书名可以很长，下拉框跟着长到占满整行，与右侧「标题」输入框
   宽度悬殊。限宽后仍需 min-width:0，否则 select 的 min-content 以最长选项为准，
   照样把整行顶宽。 */
.note-edit-form select:not(.canvas-note-root select):not(.ql-toolbar select) {
  max-width: 320px;
  min-width: 0;
  text-overflow: ellipsis;
}
.note-edit-form textarea:not(.canvas-note-root textarea):focus,
.note-edit-form select:not(.canvas-note-root select):focus { border-color: var(--accent); }
.modal-box:has(.quill-note-editor),
.modal-box:has(.canvas-note-root) {
  display: flex;
  width: 760px;
  max-height: 92vh;
  flex-direction: column;
}
.modal-box:has(.quill-note-editor) .modal-body,
.modal-box:has(.canvas-note-root) .modal-body {
  min-height: 0;
}
.modal-box:has(.quill-note-editor) .modal-body { overflow-y: auto; }
.canvas-note-modal .modal-box {
  height: 94vh;
  width: min(1180px, 96vw);
  max-width: 96vw;
  max-height: 94vh;
  padding: 16px;
}
.canvas-note-modal .modal-body {
  display: flex;
  min-height: 0;
  margin-bottom: 12px;
  flex: 1;
  overflow: hidden;
}
.canvas-note-modal .modal-title,
.canvas-note-modal .modal-actions {
  flex: 0 0 auto;
}
.canvas-note-modal .canvas-note-form {
  display: grid;
  width: 100%;
  min-height: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 8px 10px;
}
.canvas-note-modal .canvas-note-form > label {
  min-width: 0;
}
.canvas-note-modal .canvas-note-content {
  display: flex;
  min-height: 0;
  grid-column: 1 / -1;
  flex-direction: column;
}
.canvas-note-modal .canvas-note-content-label {
  color: var(--text-dim);
  font-size: 12px;
}
.canvas-note-modal .canvas-note-content > div,
.canvas-note-modal .canvas-note-content .mixed-note-editor,
.canvas-note-modal .canvas-note-content .mixed-note-canvas {
  min-height: 0;
  flex: 1;
}
.canvas-note-modal .canvas-note-content > div {
  display: flex;
  margin-top: 5px;
  flex-direction: column;
}
.canvas-note-modal .note-form-error {
  grid-column: 1 / -1;
}
@media (max-width: 760px) {
  .canvas-note-modal .canvas-note-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 520px) {
  .canvas-note-modal .modal-box {
    height: 98vh;
    max-height: 98vh;
  }
  .canvas-note-modal .canvas-note-form {
    grid-template-columns: minmax(0, 1fr);
  }
}
.rich-note-editor {
  margin-top: 5px;
  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(--bg-soft);
  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: 48vh;
  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-muted);
  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-edit-check { display: flex; align-items: center; gap: 7px; }
.note-edit-check input { accent-color: var(--accent); }
.note-form-error { min-height: 16px; color: #f66; font-size: 12px; }

/* 设置 */
.settings-page { width: 100%; max-width: 900px; }
.settings-title { font-size: 20px; margin-bottom: 20px; }
.settings-group {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px;
  padding: 6px 18px; margin-bottom: 16px;
}
.settings-item { display: flex; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.settings-item:last-child { border-bottom: none; }
.settings-item-block { flex-direction: column; align-items: stretch; }
.settings-item-info { flex: 1; min-width: 0; }
.settings-item-label { font-size: 14px; font-weight: 600; }
.settings-item-desc { font-size: 12px; color: var(--text-dim); margin-top: 4px; }
.settings-input {
  width: 240px; min-width: 0; padding: 6px 10px;
  background: var(--bg-card); border: 1px solid var(--line); color: var(--text); border-radius: 6px;
}

.ai-form { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; width: 100%; }
.ai-row { display: flex; align-items: center; gap: 10px; }
.ai-form > label.ai-row > span { width: 76px; color: var(--text-dim); font-size: 13px; flex: none; }
.ai-row .settings-input { flex: 1; width: auto; }
.ai-vision-row input { width: 17px; height: 17px; accent-color: var(--accent); }
.ai-vision-row small { color: var(--text-dim); font-size: 12px; }
.ai-actions { justify-content: flex-end; }
.ai-hint { flex: 1; min-width: 0; color: var(--text-dim); font-size: 12px; line-height: 1.5; }
.settings-input:focus { outline: none; border-color: var(--accent); }
.source-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 24px; padding: 10px 0 14px; }
.source-row { display: flex; align-items: center; gap: 10px; padding: 6px 0; font-size: 13px; cursor: pointer; }
.source-row input { accent-color: var(--accent); }
.settings-path {
  margin-top: 6px; padding: 6px 10px;
  background: var(--input-bg); border: 1px solid var(--line); border-radius: 6px;
  font-family: Consolas, monospace; font-size: 11px; color: var(--text-dim);
  word-break: break-all;
}
.switch input { width: 38px; height: 20px; accent-color: var(--accent); cursor: pointer; }

@media (max-width: 720px) {
  .titlebar-left { margin-right: 8px; }
  .brand-sub { display: none; }
  .tab { padding: 0 10px; }
  .notes-page { grid-template-columns: 1fr; gap: 12px; }
  .library-page { grid-template-columns: 1fr; gap: 12px; }
  .library-sidebar {
    position: static;
    max-height: none;
    overflow-y: visible;
    scrollbar-gutter: auto;
  }
  .library-search {
    width: 100%;
    flex-wrap: wrap;
  }
  .library-search input {
    min-width: 180px;
    flex: 1;
    width: auto;
  }
  .notes-sidebar { position: static; }
  #notesCollectionList {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
  .notes-toolbar { align-items: stretch; flex-direction: column; }
  .notes-search { flex-wrap: wrap; }
  #notesSearchInput { flex: 1 1 220px; width: auto; }
  .notes-toolbar > .source-select { align-self: flex-start; }
  .notes-type-tabs { max-width: 100%; overflow-x: auto; }
  .note-type-choice-grid { grid-template-columns: 1fr; }
  .note-card-footer { align-items: flex-start; flex-direction: column; }
  .note-actions { align-self: flex-end; }
  .source-list { grid-template-columns: 1fr; }
  .settings-item:not(.settings-item-block) { align-items: stretch; flex-wrap: wrap; }
  .settings-item:not(.settings-item-block) .settings-item-info { flex-basis: 100%; }
  .settings-input { flex: 1; width: auto; }
  .ai-actions { align-items: flex-end; flex-wrap: wrap; }
  .ai-hint { flex-basis: 100%; }
}

/* 弹窗 */
.modal {
  position: fixed; inset: 0; z-index: 50;
  background: var(--modal-overlay);
  display: flex; align-items: center; justify-content: center;
}
.modal-box {
  width: 420px; max-width: 90vw;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px; padding: 20px;
}
.modal-title { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.modal-body { font-size: 13px; color: var(--text-dim); line-height: 1.6; margin-bottom: 18px; }
.modal-body input[type="text"],
.modal-input {
  width: 100%; height: 32px; margin-top: 8px;
  background: var(--input-bg); border: 1px solid var(--line); border-radius: 8px;
  padding: 0 12px; color: var(--text); font-size: 13px; outline: none;
}
.modal-body input[type="text"]:focus,
.modal-input:focus { border-color: var(--accent); }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.modal-actions > .tb-btn { width: 72px; height: 32px; padding: 0; }

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