:root {
  --blue:#1260f5;
  --navy:#11154a;
  --muted:#7381a7;
  --line:#dce7f7;
  --surface:#fff;
  --bg:#f5f9ff;
  --shadow:0 5px 18px #153e7a08;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  color:var(--navy);
  background:var(--bg);
  font-size:15px
}
* {
  box-sizing:border-box
}
body {
  margin:0
}
button,input,select {
  font:inherit
}
button {
  cursor:pointer;
  color:inherit;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  background:none;
  min-height:44px;
  border-radius:10px;
  padding:8px 12px;
  text-align:left
}
button:hover {
  filter:brightness(.97)
}
button:disabled {
  opacity:.55;
  cursor:wait
}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible {
  outline:3px solid #8bb5ff;
  outline-offset:3px
}
button[hidden],[hidden] {
  display:none!important
}
a {
  color:var(--blue);
  text-decoration:none
}
h1,h2,h3,p {
  margin-top:0
}
h1 {
  font-size:30px;
  letter-spacing:-.8px;
  margin-bottom:8px
}
h2 {
  font-size:22px;
  letter-spacing:-.4px;
  margin-bottom:18px
}
h3 {
  font-size:18px
}
p {
  line-height:1.65
}
small {
  font-size:12px
}
.icon {
  width:22px;
  height:22px;
  flex-shrink:0
}
input,select {
  width:100%;
  min-width:0;
  border:1px solid var(--line);
  background:#fff;
  color:var(--navy);
  padding:12px 14px;
  border-radius:9px;
  min-height:46px
}
input::placeholder {
  color:#8794b5
}
input[type="checkbox"],input[type="radio"] {
  width:18px;
  min-height:18px;
  height:18px;
  accent-color:var(--blue)
}
input[type="color"] {
  padding:5px;
  width:100%;
  height:48px
}
.primary {
  color:white;
  background:var(--blue);
  box-shadow:0 4px 12px #1260f518;
  padding:12px 19px;
  font-weight:600;
  white-space:nowrap
}
.secondary {
  border:1px solid var(--line);
  background:white;
  color:var(--blue);
  font-weight:500;
  white-space:nowrap
}
.text-button {
  color:var(--blue);
  font-size:13px;
  padding:6px 8px
}
.icon-button {
  padding:9px;
  min-width:40px;
  min-height:40px
}
.danger {
  color:#d13b51
}
.danger-button {
  background:#d13b51;
  color:#fff;
  padding:12px 16px
}
.small-button {
  font-size:12px;
  min-height:38px
}
.muted {
  color:var(--muted);
  font-size:14px
}
.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0
}
.sidebar {
  position:fixed;
  inset:0 auto 0 0;
  width:238px;
  border-right:1px solid var(--line);
  padding:24px 16px;
  background:linear-gradient(160deg,#fafdff,#f2f8ff);
  z-index:15;
  display:flex;
  flex-direction:column
}
.brand {
  display:flex;
  align-items:center;
  gap:7px;
  margin-bottom:34px;
  white-space:nowrap
}
.brand img {
  width:54px;
  height:54px
}
.brand strong {
  display:block;
  font-weight:800;
  color:#075be8;
  font-size:25px;
  letter-spacing:-.7px
}
.brand small {
  font-weight:650;
  font-size:11px;
  color:var(--navy)
}
.sidebar nav {
  display:flex;
  flex-direction:column;
  gap:5px
}
.nav-item {
  justify-content:flex-start;
  gap:15px;
  padding:12px 15px;
  min-height:48px;
  border-radius:12px;
  font-size:14px
}
.nav-item.selected {
  background:#deebff;
  color:var(--blue);
  font-weight:700
}
.nav-divider {
  height:1px;
  background:var(--line);
  margin:19px 4px 12px
}
.sidebar-note {
  margin-top:auto;
  padding:28px 12px 5px;
  color:#49618d;
  line-height:1.9;
  font-size:12px
}
.sidebar-note span {
  color:#8392b1
}
.main {
  margin-left:238px;
  min-width:0
}
.topbar {
  display:flex;
  align-items:center;
  gap:12px;
  border-bottom:1px solid var(--line);
  padding:21px 26px;
  background:#f2f7ff
}
.quick-search {
  display:flex;
  align-items:center;
  gap:10px;
  flex:1;
  min-width:170px;
  background:white;
  border:1px solid #d2dff3;
  border-radius:10px;
  padding-left:15px;
  box-shadow:var(--shadow)
}
.quick-search>.icon {
  color:var(--blue)
}
.quick-search input {
  border:0;
  padding:15px 9px;
  font-size:14px;
  background:transparent
}
.book-search {
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0
}
.compact-field {
  display:flex;
  align-items:center;
  gap:9px;
  width:143px;
  padding:8px 10px;
  background:white;
  border:1px solid #d2dff3;
  border-radius:10px
}
.compact-field .icon {
  color:#7686aa
}
.compact-field small {
  display:block;
  color:var(--muted);
  font-size:10px;
  line-height:1
}
.compact-field input {
  padding:3px 0 0;
  border:0;
  min-height:24px;
  font-size:13px
}
.compact-field.page-field {
  width:89px
}
.book-search .primary {
  padding:13px 15px
}
.mobile-menu {
  display:none
}
.connection-strip {
  display:flex;
  align-items:center;
  gap:15px;
  padding:5px 26px;
  font-size:11px;
  color:var(--muted);
  border-bottom:1px solid #eaf0f9;
  min-height:34px
}
.connection {
  display:flex;
  align-items:center;
  gap:5px;
  color:#438671
}
.connection .icon {
  width:14px;
  height:14px
}
.connection.disconnected {
  color:#a57829
}
.connection-strip .text-button {
  margin-left:auto;
  min-height:28px;
  font-size:11px;
  padding:3px
}
.content {
  padding:27px 26px 36px;
  max-width:1600px;
  margin:auto
}
.page-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px;
  margin-bottom:23px
}
.page-heading p {
  margin:0;
  color:#7684a3;
  font-size:14px
}
.heading-actions {
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  justify-content:flex-end
}
.dashboard-columns {
  display:grid;
  grid-template-columns:minmax(0,1fr) 268px;
  gap:23px;
  align-items:start
}
.section-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  margin-bottom:15px
}
.section-heading h2 {
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:0
}
.section-heading h2 small {
  font-size:13px;
  letter-spacing:0;
  font-weight:400
}
.category-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin-bottom:24px
}
.category-card {
  background:var(--category);
  min-height:174px;
  padding:20px 15px 15px;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  border-radius:14px;
  position:relative;
  overflow:hidden;
  border:1px solid #ffffff70
}
.category-card:after {
  content:"";
  position:absolute;
  width:140px;
  height:140px;
  border-radius:50%;
  background:#ffffff25;
  right:-50px;
  top:-60px;
  pointer-events:none
}
.category-symbol {
  color:#215ae5;
  margin-bottom:13px
}
.category-symbol>.icon {
  width:45px;
  height:45px;
  stroke-width:1.7
}
.category-card:nth-child(5n+2) .category-symbol {
  color:#ed9020
}
.category-card:nth-child(5n+3) .category-symbol {
  color:#039ada
}
.category-card:nth-child(5n+4) .category-symbol {
  color:#459f39
}
.category-card:nth-child(5n+5) .category-symbol {
  color:#df547d
}
.category-card h3 {
  font-size:16px;
  line-height:1.35;
  margin:0 0 11px;
  flex:1;
  max-width:100%;
  word-break:normal
}
.category-footer {
  display:flex;
  align-items:center;
  gap:6px;
  color:#657aa2;
  font-size:12px;
  width:100%
}
.category-footer>.icon {
  width:17px;
  height:17px
}
.category-footer>.icon:last-child {
  margin-left:auto
}
.panel {
  background:white;
  border:1px solid #e1ebfa;
  border-radius:15px;
  padding:20px;
  box-shadow:var(--shadow);
  margin-bottom:22px
}
.recent-panel {
  padding:17px 13px
}
.recent-panel h2 {
  font-size:18px;
  white-space:nowrap
}
.recent-panel .section-heading {
  gap:2px
}
.recent-panel .text-button {
  font-size:11px
}
.recent-list {
  display:grid;
  gap:10px
}
.recent-card {
  display:flex;
  width:100%;
  background:#fff;
  border:1px solid #e1ebfa;
  border-radius:11px;
  padding:10px;
  gap:10px;
  justify-content:flex-start
}
.recent-card>.icon {
  width:17px;
  color:#7c91b8;
  margin-left:auto
}
.recent-details {
  display:flex;
  flex-direction:column;
  gap:5px;
  min-width:0
}
.recent-details strong {
  font-size:15px
}
.recent-details>span {
  font-size:13px
}
.recent-details small {
  color:var(--muted);
  font-size:11px
}
.recent-details .badge {
  font-size:9px;
  padding:3px 5px;
  white-space:normal
}
.recent-details .badge .icon {
  width:11px;
  height:11px
}
.recent-empty {
  font-size:13px;
  margin:15px 3px 8px;
  line-height:1.8
}
.book-cover {
  width:49px;
  height:67px;
  flex:0 0 49px;
  border:2px solid #ffffffd9;
  outline:1px solid #b4cee8;
  border-radius:5px;
  background:linear-gradient(110deg,#ffffff35,transparent),var(--cover);
  box-shadow:inset 4px 0 #00000010;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:5px;
  color:#155eb8;
  overflow:hidden
}
.book-cover small {
  font-size:6px;
  font-weight:800
}
.book-cover strong {
  font-size:12px;
  max-width:100%;
  overflow:hidden;
  margin:5px 0
}
.book-cover .icon {
  height:10px;
  width:10px;
  align-self:flex-end
}
.quick-panel {
  margin-top:28px;
  margin-bottom:28px
}
.shortcut-list {
  display:flex;
  gap:10px;
  flex-wrap:wrap
}
.shortcut {
  min-width:85px;
  min-height:49px;
  padding:12px 18px;
  font-weight:700;
  border:1px solid #d9e6fb
}
.empty-state {
  text-align:center;
  padding:35px 22px;
  background:#fff;
  border:1px dashed #c9dbf4;
  border-radius:15px;
  margin:22px 0
}
.empty-state>.icon {
  width:38px;
  height:38px;
  color:#77a6ef;
  margin-bottom:15px
}
.empty-state h3 {
  margin-bottom:9px
}
.empty-state p {
  color:var(--muted);
  font-size:14px;
  max-width:440px;
  margin:0 auto 18px
}
.empty-actions {
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap
}
.badge {
  display:inline-flex;
  align-items:center;
  gap:4px;
  border-radius:20px;
  background:#edf4ff;
  color:#587eae;
  padding:5px 8px;
  font-size:10px;
  font-weight:550;
  line-height:1.3
}
.badge .icon {
  width:13px;
  height:13px
}
.badge.offline {
  background:#e7f6e9;
  color:#3b8853
}
.badge.update {
  background:#fff4d6;
  color:#9b791f
}
.badge.failed {
  background:#ffedf0;
  color:#b94560
}
.breadcrumbs {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:2px;
  margin-bottom:16px
}
.breadcrumbs>.icon {
  width:14px;
  height:14px;
  color:#a0aece
}
.breadcrumbs .text-button {
  font-size:12px;
  min-height:34px
}
.book-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px
}
.book-card {
  background:white;
  border:1px solid #dfe9f9;
  border-radius:13px;
  overflow:hidden
}
.book-open {
  padding:18px 14px;
  display:flex;
  justify-content:flex-start;
  width:100%;
  gap:12px
}
.book-open>span {
  display:flex;
  flex-direction:column;
  gap:7px;
  min-width:0
}
.book-open strong {
  font-size:18px
}
.book-open>span>span {
  font-size:12px;
  color:#596d95
}
.book-open small {
  font-size:10px;
  color:var(--muted);
  line-height:1.6
}
.book-open>.icon {
  margin-left:auto;
  width:15px;
  flex-shrink:0
}
.book-card-footer {
  padding:6px 11px 8px;
  border-top:1px solid #eef3fb;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:6px
}
.book-card-footer .icon-button {
  color:#8195b6
}
.folder-tree {
  background:white;
  border:1px solid var(--line);
  border-radius:14px;
  padding:8px 15px
}
.tree-row {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  border-bottom:1px solid #edf2fa;
  padding:5px 0 5px calc(var(--depth)*22px)
}
.tree-row:last-child {
  border-bottom:0
}
.tree-label {
  justify-content:flex-start;
  flex-wrap:wrap;
  min-width:0
}
.tree-label>.icon {
  background:var(--category);
  padding:4px;
  box-sizing:content-box;
  border-radius:7px;
  color:#547dc1
}
.tree-label strong {
  font-size:14px
}
.tree-label span {
  font-size:11px;
  color:var(--muted)
}
.tree-actions {
  display:flex;
  align-items:center;
  flex-shrink:0
}
.tree-actions .icon-button {
  color:#7e91b2
}
.stats-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  margin-bottom:24px
}
.stat {
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px;
  background:#eaf3ff;
  border:1px solid #e0edff;
  border-radius:12px
}
.stat>.icon {
  width:38px;
  height:38px;
  padding:7px;
  box-sizing:content-box;
  background:#d9e9ff;
  border-radius:12px;
  color:var(--blue)
}
.stat>span {
  display:flex;
  flex-direction:column;
  gap:6px;
  color:#637798;
  font-size:12px
}
.stat strong {
  font-size:25px;
  color:var(--navy)
}
.stat.green {
  background:#ebf8ed;
  border-color:#e2f3e4
}
.stat.green>.icon {
  background:#d5efd9;
  color:#45a553
}
.stat.amber {
  background:#fff6dc;
  border-color:#fff0c3
}
.stat.amber>.icon {
  background:#ffedbd;
  color:#dea223
}
.stat.pink {
  background:#ffedf3;
  border-color:#fbe2ec
}
.stat.pink>.icon {
  background:#fcdbe8;
  color:#d66192
}
.category-chips {
  display:flex;
  gap:10px;
  flex-wrap:wrap
}
.category-chips button {
  font-weight:600;
  font-size:12px;
  padding:12px 15px
}
.category-chips .icon {
  width:23px;
  height:23px;
  color:#5475ab
}
.table-wrap {
  overflow-x:auto
}
table {
  width:100%;
  border-collapse:collapse;
  font-size:12px
}
th {
  text-align:left;
  background:#f0f6ff;
  font-weight:600;
  padding:14px 10px;
  white-space:nowrap
}
td {
  padding:14px 10px;
  border-bottom:1px solid #edf2fa;
  line-height:1.5
}
td small {
  display:block;
  color:var(--muted);
  margin-top:5px;
  font-size:10px
}
.table-book {
  justify-content:flex-start;
  padding:0;
  gap:12px;
  min-width:170px
}
.table-book span {
  text-align:left
}
.table-book strong {
  font-size:14px
}
.table-book .book-cover {
  width:34px;
  flex-basis:34px;
  height:47px
}
.table-book .book-cover strong {
  font-size:9px
}
.table-book .book-cover small {
  font-size:4px;
  margin:0
}
.notice {
  padding:16px 19px;
  border:1px solid #dfebfc;
  border-radius:11px;
  background:#eef5ff;
  color:#57749d;
  font-size:13px;
  line-height:1.65;
  margin:0 0 22px
}
.notice.error {
  background:#fff4e0;
  color:#8d713b;
  margin:20px 26px 0
}
.storage-list {
  display:grid;
  gap:0
}
.storage-item {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px;
  padding:15px 0;
  border-bottom:1px solid #edf2fa
}
.storage-item>div {
  display:flex;
  gap:8px;
  align-items:center
}
.storage-item>div:first-child {
  flex-direction:column;
  align-items:flex-start;
  font-size:13px
}
.storage-item small {
  color:var(--muted);
  font-size:11px
}
.help-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px
}
.help-grid h2 {
  font-size:18px;
  margin:24px 0 10px
}
.help-grid h2:first-child {
  margin-top:3px
}
.help-grid p {
  color:#687d9f;
  font-size:14px
}
.main>footer {
  display:flex;
  justify-content:space-between;
  color:#9aabc5;
  font-size:10px;
  padding:5px 26px 22px
}
.viewer-content {
  padding-top:14px
}
.viewer-tabs {
  display:flex;
  align-items:stretch;
  gap:8px;
  overflow-x:auto;
  padding:3px 2px 0
}
.viewer-tab {
  display:flex;
  align-items:center;
  background:#edf4ff;
  border:1px solid #d6e2f3;
  border-bottom:0;
  border-radius:11px 11px 0 0;
  flex-shrink:0;
  min-width:145px
}
.viewer-tab.active {
  background:white;
  border-color:#7faaff;
  box-shadow:0 0 0 1px #a1bdff20
}
.viewer-tab>[role="tab"] {
  padding:12px 10px;
  font-size:13px;
  gap:8px;
  min-height:49px
}
.viewer-tab small {
  color:#778ab0;
  font-size:11px
}
.viewer-tab .icon {
  width:18px;
  height:18px;
  color:#6e99e6
}
.viewer-tab>.icon-button {
  padding:7px;
  min-width:31px
}
.new-tab {
  border:1px solid #d6e2f3;
  background:#edf4ff;
  margin-bottom:4px
}
.viewer {
  background:#343d43;
  border-radius:0 12px 12px 12px;
  box-shadow:0 5px 14px #20304022;
  overflow:hidden
}
.viewer-toolbar {
  background:#363f46;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:8px 12px;
  color:white;
  flex-wrap:wrap
}
.viewer-navigation,.zoom-controls {
  display:flex;
  align-items:center;
  gap:4px
}
.viewer-toolbar .icon-button {
  color:#fff
}
.viewer-navigation form {
  display:flex;
  align-items:center;
  gap:7px;
  font-size:12px
}
.viewer-navigation input {
  width:54px;
  min-height:36px;
  padding:6px;
  text-align:center;
  background:#4c565f;
  border-color:#68747c;
  color:white
}
.zoom-controls {
  border-left:1px solid #66717a;
  padding-left:14px;
  font-size:12px
}
.zoom-controls>span {
  min-width:60px;
  text-align:center
}
.view-only {
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:#256ada;
  color:#fff;
  border-radius:9px;
  padding:8px 12px;
  font-size:12px;
  font-weight:600
}
.view-only>.icon {
  width:18px;
  height:18px
}
.viewer-source {
  padding:7px 18px;
  background:#2e363c;
  color:#bccbd2;
  font-size:10px
}
.pdf-stage {
  overflow:auto;
  padding:20px;
  min-height:60vh;
  height:calc(100vh - 275px);
  text-align:center;
  display:block;
  background:#465058
}
.pdf-stage canvas {
  background:white;
  box-shadow:0 3px 13px #00000033;
  border-radius:4px;
  vertical-align:top
}
.viewer-message {
  background:#f9fbff;
  max-width:500px;
  margin:50px auto;
  color:#61749a;
  padding:35px 20px;
  border-radius:12px;
  line-height:1.65;
  font-size:14px
}
.viewer-message h3 {
  color:var(--navy)
}
.viewer-message button {
  margin:8px 4px
}
.modal-overlay {
  position:fixed;
  inset:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#12275170;
  padding:20px;
  overflow:auto
}
.modal {
  width:520px;
  max-width:100%;
  max-height:calc(100vh - 40px);
  overflow:auto;
  border-radius:18px;
  background:white;
  box-shadow:0 20px 60px #051b4940
}
.modal>header {
  padding:18px 22px 12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid #edf2fa
}
.modal h2 {
  font-size:20px;
  margin:0
}
.modal-form,.book-menu,.bulk-progress {
  padding:20px 22px
}
.modal-form>label {
  display:flex;
  flex-direction:column;
  gap:8px;
  font-size:13px;
  font-weight:600;
  margin-bottom:16px
}
.mode-choice {
  display:flex;
  gap:10px;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:11px;
  padding:14px;
  margin-bottom:12px;
  background:#f6f9ff
}
.mode-choice label {
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px
}
.modal-actions {
  display:flex;
  justify-content:flex-end;
  gap:10px;
  margin-top:20px
}
.form-error {
  font-size:13px;
  color:#b93a55;
  margin:12px 0 0;
  line-height:1.6
}
.form-error:empty {
  display:none
}
.form-two {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px
}
.form-two label {
  font-size:13px;
  display:flex;
  flex-direction:column;
  gap:8px
}
.book-menu p {
  margin-bottom:8px
}
.book-menu>.badge {
  margin:6px 0 13px
}
.menu-action {
  justify-content:flex-start;
  display:flex;
  gap:12px;
  width:100%;
  padding:13px 10px;
  border-bottom:1px solid #eef2f8;
  border-radius:0;
  font-size:13px
}
.menu-action .icon {
  color:#5d88c3
}
.menu-action.danger .icon {
  color:#d13b51
}
.shortcut-options {
  max-height:40vh;
  overflow:auto
}
.shortcut-options label {
  display:flex;
  align-items:center;
  gap:9px;
  padding:10px 0;
  font-size:13px
}
.bulk-progress progress {
  width:100%;
  height:14px;
  accent-color:var(--blue)
}
#bulk-results {
  color:#bb4d60;
  font-size:12px;
  margin:14px 0
}
.startup {
  text-align:center;
  padding:20vh 20px;
  color:#587caf
}
.startup h1 {
  color:var(--blue);
  margin-top:15px
}
#toast {
  position:fixed;
  bottom:24px;
  left:50%;
  transform:translateX(-50%) translateY(20px);
  z-index:100;
  padding:13px 20px;
  border-radius:12px;
  background:#14264a;
  color:white;
  font-size:13px;
  max-width:min(90vw,650px);
  box-shadow:0 5px 20px #00000025;
  opacity:0;
  pointer-events:none;
  transition:opacity .15s,transform .15s;
  line-height:1.6
}
#toast.visible {
  opacity:1;
  transform:translateX(-50%) translateY(0)
}
@media(min-width:1500px) {
  .category-card {
    min-height:185px
  }
  .category-card h3 {
    font-size:18px
  }
  .dashboard-columns {
    grid-template-columns:minmax(0,1fr) 310px
  }
  .sidebar {
    width:260px
  }
  .main {
    margin-left:260px
  }
  .brand strong {
    font-size:29px
  }
  .brand small {
    font-size:12px
  }
}
@media(max-width:1250px) {
  .sidebar {
    width:208px;
    padding:22px 12px
  }
  .main {
    margin-left:208px
  }
  .brand img {
    width:46px;
    height:46px
  }
  .brand strong {
    font-size:23px
  }
  .brand small {
    font-size:10px
  }
  .topbar {
    padding:16px 20px;
    gap:8px
  }
  .content {
    padding:22px 20px
  }
  .connection-strip {
    padding:5px 20px
  }
  .dashboard-columns {
    grid-template-columns:minmax(0,1fr) 240px;
    gap:17px
  }
  .category-grid {
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:10px
  }
  .category-card {
    min-height:155px;
    padding:17px 13px 13px
  }
  .category-card h3 {
    font-size:14px
  }
  .category-symbol>.icon {
    width:37px;
    height:37px
  }
  .book-search .compact-field {
    width:112px
  }
  .book-search .page-field {
    width:72px
  }
  .book-search .primary {
    padding:13px 11px
  }
  .stats-grid {
    gap:10px
  }
  .stat {
    padding:15px 12px;
    gap:9px
  }
  .stat>.icon {
    width:27px;
    height:27px
  }
  .stat strong {
    font-size:22px
  }
  .book-grid {
    grid-template-columns:repeat(2,minmax(0,1fr))
  }
}
@media(max-width:1050px) {
  .dashboard-columns {
    grid-template-columns:minmax(0,1fr)
  }
  .category-grid {
    grid-template-columns:repeat(4,minmax(0,1fr))
  }
  .recent-panel .recent-list {
    grid-template-columns:repeat(2,minmax(0,1fr))
  }
  .recent-panel .section-heading h2 {
    font-size:21px
  }
  .category-card h3 {
    font-size:14px
  }
  .page-heading h1 {
    font-size:25px
  }
  .topbar {
    flex-wrap:wrap
  }
  .quick-search {
    flex-basis:100%
  }
  .book-search {
    width:100%;
    justify-content:flex-end
  }
  .book-search .compact-field {
    flex:1;
    width:auto
  }
  .book-search .page-field {
    flex:0 0 100px
  }
  .book-search .primary {
    padding:13px 24px
  }
  .stats-grid {
    grid-template-columns:repeat(2,minmax(0,1fr))
  }
  .connection-strip {
    flex-wrap:wrap;
    gap:5px 12px
  }
  .connection-strip #shell-label {
    font-size:10px
  }
  .help-grid {
    grid-template-columns:1fr
  }
  .pdf-stage {
    height:calc(100vh - 335px)
  }
  .page-heading {
    align-items:flex-start
  }
  .heading-actions .primary {
    font-size:12px;
    padding:11px 14px
  }
}
@media(max-width:850px) {
  .sidebar {
    position:relative;
    inset:auto;
    width:100%;
    padding:18px 24px 0;
    border:0;
    background:#f3f8ff
  }
  .sidebar .brand {
    margin-bottom:15px
  }
  .brand img {
    width:65px;
    height:65px
  }
  .brand strong {
    font-size:32px
  }
  .brand small {
    font-size:13px
  }
  .sidebar nav {
    flex-direction:row;
    overflow-x:auto;
    gap:6px;
    border-bottom:1px solid var(--line);
    padding-bottom:12px
  }
  .nav-item {
    flex-shrink:0;
    min-height:41px;
    padding:8px 12px;
    font-size:12px;
    gap:6px
  }
  .nav-item .icon {
    width:17px;
    height:17px
  }
  .nav-divider,.sidebar-note {
    display:none
  }
  .main {
    margin-left:0
  }
  .topbar {
    padding:18px 24px
  }
  .connection-strip {
    padding:5px 24px
  }
  .content {
    padding:24px
  }
  .category-grid {
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:13px
  }
  .category-card {
    min-height:113px;
    display:grid;
    grid-template-columns:58px 1fr;
    grid-template-rows:1fr auto;
    gap:5px 12px;
    padding:18px
  }
  .category-symbol {
    grid-row:1/3;
    margin:0;
    align-self:center
  }
  .category-symbol>.icon {
    width:47px;
    height:47px
  }
  .category-card h3 {
    font-size:18px;
    margin:0;
    align-self:end
  }
  .category-footer {
    grid-column:2;
    font-size:13px
  }
  .category-footer>.icon:last-child {
    position:absolute;
    right:14px;
    top:calc(50% - 8px)
  }
  .category-card h3,.category-footer {
    padding-right:16px
  }
  .recent-panel .recent-list {
    grid-template-columns:repeat(2,minmax(0,1fr))
  }
  .recent-card {
    padding:15px;
    gap:14px
  }
  .recent-card .book-cover {
    width:55px;
    height:75px;
    flex-basis:55px
  }
  .page-heading h1 {
    font-size:27px
  }
  .pdf-stage {
    height:60vh
  }
  .viewer-toolbar {
    padding:7px
  }
  .zoom-controls {
    padding-left:7px
  }
  .view-only {
    padding:7px 9px;
    font-size:11px
  }
  .viewer-source {
    line-height:1.5
  }
}
@media(max-width:560px) {
  .sidebar {
    padding:16px 16px 0
  }
  .brand img {
    width:52px;
    height:52px
  }
  .brand strong {
    font-size:27px
  }
  .brand small {
    font-size:11px
  }
  .topbar {
    padding:13px 16px
  }
  .connection-strip {
    padding:5px 16px;
    font-size:10px
  }
  .connection-strip #shell-label {
    flex-basis:100%;
    order:2
  }
  .connection-strip .text-button {
    margin-left:auto
  }
  .content {
    padding:20px 16px
  }
  .page-heading {
    flex-wrap:wrap
  }
  .page-heading h1 {
    font-size:24px
  }
  .page-heading p {
    font-size:12px
  }
  .heading-actions {
    justify-content:flex-start
  }
  .heading-actions .primary,.heading-actions .secondary {
    font-size:12px
  }
  .category-grid {
    gap:10px
  }
  .category-card {
    display:flex;
    min-height:149px;
    padding:16px 12px;
    gap:0
  }
  .category-symbol {
    align-self:flex-start;
    margin-bottom:9px
  }
  .category-symbol>.icon {
    width:33px;
    height:33px
  }
  .category-card h3 {
    font-size:14px;
    align-self:flex-start;
    flex:1;
    margin-bottom:9px
  }
  .category-footer {
    font-size:10px;
    padding:0
  }
  .category-footer>.icon:last-child {
    position:static;
    margin-left:auto;
    width:14px
  }
  .category-footer>.icon {
    width:13px
  }
  .section-heading h2 {
    font-size:19px
  }
  .section-heading h2 small {
    display:none
  }
  .section-heading .text-button {
    font-size:11px
  }
  .recent-panel .recent-list {
    grid-template-columns:1fr
  }
  .recent-card .book-cover {
    width:43px;
    height:59px;
    flex-basis:43px
  }
  .recent-card {
    padding:12px
  }
  .recent-details>.badge {
    font-size:9px
  }
  .book-grid {
    grid-template-columns:1fr
  }
  .panel {
    padding:16px
  }
  .category-chips button {
    font-size:10px;
    padding:8px 10px
  }
  .stats-grid {
    gap:9px
  }
  .stat {
    padding:13px 10px;
    gap:8px
  }
  .stat>.icon {
    width:20px;
    height:20px;
    padding:5px
  }
  .stat strong {
    font-size:20px
  }
  .stat span {
    font-size:10px
  }
  .table-wrap {
    margin:0 -8px
  }
  .tree-actions .desktop-label {
    display:none
  }
  .tree-actions button {
    padding:6px;
    min-width:32px
  }
  .tree-actions .icon {
    width:17px
  }
  .tree-label {
    gap:5px;
    padding:6px 0
  }
  .tree-label strong {
    font-size:11px
  }
  .tree-label span {
    display:none
  }
  .tree-label .icon {
    width:17px;
    height:17px
  }
  .tree-row {
    padding-left:calc(var(--depth)*10px)
  }
  .folder-tree {
    padding:6px 10px
  }
  .viewer-tabs {
    gap:5px
  }
  .viewer-tab {
    min-width:122px
  }
  .viewer-tab>[role="tab"] {
    font-size:12px;
    padding:10px 6px;
    gap:5px
  }
  .viewer-toolbar .icon-button {
    min-width:32px;
    min-height:34px;
    padding:5px
  }
  .viewer-toolbar .icon {
    width:18px;
    height:18px
  }
  .viewer-toolbar {
    gap:3px
  }
  .zoom-controls {
    border:0;
    padding-left:0;
    gap:0
  }
  .zoom-controls>span {
    font-size:10px;
    min-width:46px
  }
  .viewer-navigation {
    gap:0
  }
  .viewer-navigation input {
    width:41px
  }
  .viewer-navigation form {
    font-size:10px;
    gap:4px
  }
  .view-only {
    display:none
  }
  .pdf-stage {
    padding:12px;
    min-height:55vh
  }
  .storage-item {
    align-items:flex-start;
    flex-direction:column
  }
  .storage-item>div:last-child {
    align-self:flex-end
  }
  .modal-overlay {
    padding:10px
  }
  .modal {
    max-height:calc(100vh - 20px)
  }
  .modal>header {
    padding:16px
  }
  .modal-form,.book-menu,.bulk-progress {
    padding:18px 16px
  }
  .modal h2 {
    font-size:18px
  }
  .book-search .primary {
    padding:13px 14px
  }
  .book-search .page-field {
    flex-basis:76px
  }
  .quick-panel {
    margin-top:22px
  }
  .shortcut {
    min-width:71px;
    min-height:44px;
    font-size:13px
  }
  .main>footer {
    padding:5px 16px 20px
  }
  .empty-state {
    padding:27px 15px
  }
}
@media(prefers-reduced-motion:reduce) {
  * {
    transition:none!important;
    scroll-behavior:auto!important
  }
}

/* Reading space: layout controls never recreate the active PDF document. */
.sidebar-close { align-self:flex-end; margin:-20px 0 12px; font-size:11px; }
.sidebar-toggle { color:var(--blue); flex-shrink:0; }
.sidebar-hidden .sidebar, .viewer-expanded .sidebar { display:none; }
.sidebar-hidden .main, .viewer-expanded .main { margin-left:0; }
.view-viewer { overflow:hidden; }
.view-viewer #app { height:100vh; height:100dvh; }
.view-viewer .main { height:100%; display:flex; flex-direction:column; }
.view-viewer .topbar, .view-viewer .connection-strip { flex-shrink:0; }
.view-viewer .viewer-content { flex:1; min-height:0; display:flex; flex-direction:column; width:100%; max-width:none; padding:12px 18px 8px; }
.view-viewer .viewer-tabs { flex-shrink:0; }
.view-viewer .viewer { flex:1; min-height:0; display:flex; flex-direction:column; }
.view-viewer .viewer-toolbar, .view-viewer .viewer-source { flex-shrink:0; }
.view-viewer .pdf-stage { flex:1; height:auto; min-height:0; padding:16px; }
.view-viewer .main>footer { display:none; }
.viewer-expanded .topbar, .viewer-expanded .connection-strip, .viewer-expanded .main>.notice { display:none; }
.viewer-expanded .viewer-content { padding:0; }
.viewer-expanded .viewer { border-radius:0; }
.viewer-expanded .viewer-tabs { background:#edf4ff; }
.viewer-text-button { color:white; border:1px solid #667789; font-size:12px; min-height:36px; padding:5px 9px; white-space:nowrap; }
.full-page-toggle { background:#1260f5; border-color:#1260f5; }
.uploaded-cover { padding:0; background:white; box-shadow:none; }
.uploaded-cover img { width:100%; height:100%; object-fit:contain; }
.cover-preview { display:block; max-width:120px; max-height:165px; margin:0 auto 18px; object-fit:contain; border:1px solid var(--line); border-radius:5px; }
.book-actions { display:flex; gap:2px; }
.book-actions .text-button { font-size:11px; padding:5px; }
.book-actions .icon { width:15px; height:15px; }
@media(max-width:1050px) {
  .sidebar-toggle { position:absolute; left:16px; top:19px; }
  .topbar { position:relative; }
  .topbar .quick-search { margin-left:43px; }
}
@media(max-width:850px) {
  .sidebar-close { margin:-12px 0 6px; }
  .view-viewer #app { display:flex; flex-direction:column; }
  .view-viewer .sidebar { flex-shrink:0; padding:4px 16px 0; }
  .view-viewer .sidebar .brand { display:none; }
  .view-viewer .sidebar-close { display:none; }
  .view-viewer .sidebar nav { padding-bottom:4px; }
  .view-viewer .main { height:auto; flex:1; min-height:0; }
}
@media(max-width:560px) {
  .view-viewer .viewer-content { padding:8px 8px 0; }
  .viewer-expanded .viewer-content { padding:0; }
  .viewer-text-button { font-size:10px; padding:4px 6px; }
  .viewer-text-button .icon { width:15px; height:15px; }
  .viewer-toolbar { justify-content:flex-start; }
  .full-page-toggle { margin-left:auto; }
  .sidebar-toggle { top:12px; }
}

.browse-controls { display:flex; align-items:center; gap:14px; flex-wrap:wrap; margin:0 0 18px; }
.display-switch { display:flex; border:1px solid var(--line); border-radius:10px; background:white; padding:3px; }
.display-switch button { font-size:12px; min-height:36px; padding:7px 12px; }
.display-switch .selected { background:#deebff; color:var(--blue); }
.browse-controls>label { display:flex; align-items:center; gap:8px; font-size:12px; color:var(--muted); }
.browse-controls select { width:auto; min-height:40px; padding:8px 28px 8px 10px; font-size:12px; }
.browse-controls>small { color:var(--muted); font-size:11px; }
.filename-list { background:white; border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.filename-row { display:flex; align-items:center; gap:6px; padding:5px 10px; border-bottom:1px solid #edf2fa; }
.filename-row:last-child { border:0; }
.filename-open { flex:1; min-width:0; justify-content:flex-start; font-size:14px; gap:10px; }
.filename-open>.icon { color:#7192c2; width:19px; }
.filename-open>span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.order-buttons { display:flex; flex-shrink:0; }
.order-buttons .icon-button { min-width:30px; min-height:32px; padding:5px; color:var(--blue); font-size:17px; }
.book-card-footer { flex-wrap:wrap; }
@media(max-width:560px) { .filename-row { padding:5px; } .filename-open { font-size:12px; padding:8px 5px; gap:5px; } .filename-row .book-actions .text-button { font-size:10px; padding:5px 4px; } .filename-row .book-actions .icon { display:none; } }
.page-layer { position:relative; flex-shrink:0; margin:auto; }
#note-canvas { position:absolute; top:0; left:0; pointer-events:none; }
#note-canvas.drawing { pointer-events:auto; touch-action:none; cursor:crosshair; }
#page-note-text { position:absolute; bottom:12px; left:12px; right:12px; white-space:pre-wrap; overflow-wrap:anywhere; background:#fff7c9e8; color:#7c202b; padding:8px; pointer-events:none; max-height:25%; overflow:auto; font-size:14px; }
#page-note-text:empty { display:none; }
.page-slider { flex-shrink:0; display:flex; align-items:center; gap:12px; padding:6px 16px; background:#eef4ff; }
.page-slider input { flex:1; min-width:50px; }
#note-tools { flex-shrink:0; padding:8px; background:#fff7db; display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
#note-tools[hidden] { display:none; }
#note-tools textarea { width:100%; max-height:70px; min-height:42px; }
.pdf-stage .page-layer > #pdf-canvas { margin:0; display:block; }
.page-layer { width:fit-content; }
.pdf-stage #note-canvas { background:transparent; box-shadow:none; border-radius:0; }
.pdf-stage #pdf-canvas[hidden], .pdf-stage #note-canvas[hidden] { display:none; }
.suggestion-anchor { position:relative; }
.search-suggestions { position:absolute; top:100%; left:0; min-width:260px; width:100%; z-index:90; background:white; border:1px solid #c8d9ff; box-shadow:0 8px 24px #153d7526; border-radius:12px; max-height:300px; overflow:auto; padding:6px; }
.search-suggestions button { display:flex; width:100%; text-align:left; gap:12px; padding:12px; background:white; color:#10265d; border:0; }
.search-suggestions button:hover,.search-suggestions button:focus { background:#eaf2ff; }
.search-suggestions button span { flex:1; }
.note-palette { display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.note-palette label { display:flex; gap:6px; align-items:center; }
.note-palette input { width:42px; padding:2px; }
#note-boxes { position:absolute; inset:0; pointer-events:none; }
#note-boxes textarea { position:absolute; width:22%; min-width:100px; height:70px; min-height:40px; background:#ffffffd9; border:1px dashed currentColor; padding:6px; font:16px sans-serif; pointer-events:auto; resize:both; }
#note-boxes textarea[readonly] { border:0; background:#fff8d9c9; pointer-events:none; resize:none; }
#note-boxes textarea { resize:none; }
.drive-file-list { max-height:50vh; overflow:auto; }
.drive-file-list button { display:flex; flex-direction:column; align-items:flex-start; width:100%; overflow-wrap:anywhere; }

/* Role-hidden controls must remain hidden despite button layout rules. */
[hidden] { display: none !important; }

.pdf-stage.two-pages { display:flex; align-items:flex-start; gap:16px; }
.pdf-stage.two-pages .page-layer { margin:auto 0; }
.spread-page[hidden] { display:none; }
#spread-notes { position:absolute; inset:0; pointer-events:none; }
.spread-text-box { position:absolute; white-space:pre-wrap; font-size:16px; text-align:left; }
.spread-page-note { position:absolute; bottom:8px; left:8px; right:8px; background:#fff9cf; white-space:pre-wrap; }

.manage-category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.manage-category-card{display:flex;align-items:center;border-radius:14px;padding:14px 10px;gap:6px}
.manage-category-open{display:flex;align-items:center;gap:14px;flex:1;text-align:left;background:none;padding:0}
.manage-category-open>.icon{width:46px;height:46px;flex-shrink:0;color:#087dc2}
.manage-category-open small{display:block;margin-top:6px;color:#63708c}
.manage-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.manage-search{display:flex;align-items:center;gap:8px;flex:1;min-width:200px;border:1px solid #dce5f3;border-radius:10px;padding:0 12px}
.manage-search input{border:0;min-width:0;flex:1;padding:12px 0;background:transparent}
.manage-filters select{border:1px solid #dce5f3;border-radius:10px;padding:10px;background:white;color:#172248}
.manage-book-table{min-width:940px}.manage-book-table th{background:#edf5ff;white-space:nowrap}.manage-book-table td{padding:14px 12px;border-bottom:1px solid #edf1f7}
.manage-category-badge{display:inline-flex;align-items:center;gap:8px;border-radius:10px;font-size:13px;text-align:left;padding:8px 10px}
.manage-pdf{display:flex;align-items:center;gap:8px}.manage-pdf>.icon{color:#ec3758}.manage-pdf small{display:block;color:#75819b;margin-top:4px}
.row-menu::before{content:'⋮';font-size:26px;line-height:1}.row-menu{background:#eff5ff;color:#1561f4;border-radius:10px}

.merlion-icon { object-fit:contain; }