:root {
  color-scheme: light;
  --accent: #1254a3;
  --accent-soft: #eaf2fc;
  --ink: #242a33;
  --muted: #69727e;
  --chrome: #fff;
  --surface: #f6f7f9;
  --canvas: #e9edf2;
  --line: #e0e4e9;
  --hover: #f0f3f7;
  --shadow: 0 5px 24px #192b4410;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  outline-offset: 3px;
}
button {
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 4px;
}
button:hover {
  background: var(--hover);
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}
a {
  color: var(--accent);
  text-decoration: none;
}
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
}
input,
select,
textarea {
  color: var(--ink);
  background: var(--chrome);
  border: 1px solid var(--line);
  border-radius: 4px;
}
input,
select {
  height: 32px;
  padding: 4px 8px;
}
textarea {
  padding: 10px;
  resize: vertical;
}
button.primary,
.primary {
  color: white;
  background: var(--accent);
  padding: 9px 18px;
}
button.primary:hover {
  filter: brightness(1.1);
}
[hidden] {
  display: none !important;
}
.studio {
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.titlebar {
  height: 54px;
  background: var(--chrome);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 18px;
  flex: none;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 16px;
  letter-spacing: -0.5px;
}
.brand-icon {
  height: 28px;
  width: 28px;
  display: grid;
  place-items: center;
  background: var(--accent);
  border-radius: 6px;
  color: white;
  font: 700 22px Georgia;
}
.divider {
  height: 23px;
  width: 1px;
  background: var(--line);
}
#document-title {
  border: 0;
  background: transparent;
  width: 175px;
  font-weight: 500;
  font-size: 14px;
}
.save-state {
  font-size: 12px;
  color: var(--muted);
}
.save-state:before {
  content: "✓";
  margin-right: 6px;
  color: var(--muted);
}
.title-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 13px;
}
.title-actions > button:first-child {
  font-size: 22px;
}
.share-button {
  background: var(--accent);
  color: white;
  padding: 8px 14px;
  font-weight: 500;
}
.tabs {
  height: 39px;
  background: var(--chrome);
  display: flex;
  gap: 5px;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  padding: 0 17px;
  flex: none;
}
.tabs > button {
  border-radius: 0;
  padding: 0 13px;
  position: relative;
  font-size: 14px;
}
.tabs > button.active {
  font-weight: 600;
  color: var(--accent);
}
.tabs > button.active:after {
  content: "";
  position: absolute;
  bottom: -1px;
  height: 3px;
  background: var(--accent);
  left: 13px;
  right: 13px;
  border-radius: 3px;
}
.tabs-tail {
  margin-left: auto;
  align-self: center;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1.5px;
}
.version {
  border: 1px solid var(--line);
  padding: 2px 5px;
  border-radius: 4px;
  letter-spacing: 0;
  margin-left: 8px;
}
.ribbon {
  height: 105px;
  background: var(--chrome);
  display: flex;
  align-items: stretch;
  padding: 10px 14px 5px;
  gap: 12px;
  border-bottom: 1px solid #d1d7df;
  flex: none;
  overflow-x: auto;
}
.ribbon-group {
  padding: 0 15px 0 0;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: max-content;
  position: relative;
}
.ribbon-group:last-child {
  border: 0;
}
.ribbon-content {
  display: flex;
  gap: 5px;
  align-items: center;
  flex: 1;
}
.ribbon-stack {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.ribbon-row {
  display: flex;
  gap: 4px;
  align-items: center;
}
.ribbon-label {
  color: var(--muted);
  font-size: 11px;
  text-align: center;
  height: 15px;
}
.tool {
  min-height: 28px;
  min-width: 29px;
  padding: 4px 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}
.tool.large {
  height: 55px;
  flex-direction: column;
  font-size: 12px;
  gap: 6px;
  min-width: 48px;
}
.tool.large .glyph {
  font-size: 24px;
  line-height: 26px;
  font-weight: 400;
}
.tool.active,
.tool[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}
.ribbon select {
  font-size: 12px;
  height: 28px;
  padding: 2px 5px;
}
.ribbon input[type="color"] {
  width: 28px;
  height: 27px;
  padding: 2px;
  border: 0;
  cursor: pointer;
}
.style-card {
  border: 1px solid var(--line);
  height: 55px;
  width: 88px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 7px;
  gap: 4px;
}
.style-card span {
  font-size: 11px;
  color: var(--muted);
}
.style-card strong {
  font-size: 14px;
  font-weight: 400;
}
.style-card.heading strong {
  font-size: 17px;
  color: var(--accent);
}
.workspace {
  display: grid;
  grid-template-columns: 222px minmax(350px, 1fr) 240px;
  flex: 1;
  min-height: 0;
}
.navigation,
.inspector {
  background: var(--surface);
  overflow: auto;
  display: flex;
  flex-direction: column;
}
.navigation {
  border-right: 1px solid var(--line);
}
.inspector {
  border-left: 1px solid var(--line);
}
.pane-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 17px 16px 12px;
  font-weight: 600;
  font-size: 14px;
}
.pane-heading button {
  font-size: 22px;
  color: var(--muted);
  padding: 0 5px;
}
.search {
  display: flex;
  align-items: center;
  background: var(--chrome);
  margin: 0 13px 16px;
  border: 1px solid var(--line);
  border-radius: 5px;
  height: 33px;
  padding: 0 8px;
  gap: 5px;
}
.search > span {
  font-size: 22px;
  color: var(--muted);
}
.search input {
  min-width: 0;
  width: 100%;
  padding: 0;
  font-size: 12px;
  background: transparent;
  border: 0;
  outline: 0;
}
.search kbd {
  white-space: nowrap;
  font: 10px inherit;
  color: #959ca7;
}
.side-tabs {
  display: flex;
  gap: 15px;
  padding: 0 15px;
  border-bottom: 1px solid var(--line);
  height: 35px;
}
.side-tabs button {
  font-size: 12px;
  border-radius: 0;
  padding: 0 1px 10px;
  color: var(--muted);
}
.side-tabs button.active {
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  font-weight: 600;
}
.outline {
  padding: 13px 8px;
}
.outline button {
  display: block;
  text-align: left;
  width: 100%;
  padding: 9px 10px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  border-left: 2px solid transparent;
  border-radius: 0;
}
.outline button:first-child {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 600;
}
.outline .level2 {
  padding-left: 21px;
}
.navigation-footer {
  margin-top: auto;
  padding: 20px 17px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}
.small-label {
  font-size: 10px;
  letter-spacing: 1.1px;
  color: var(--muted);
  font-weight: 600;
}
.navigation-footer strong {
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
}
.canvas {
  overflow: auto;
  min-width: 0;
  padding: 0 26px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.canvas-heading {
  width: 100%;
  height: 43px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.3px;
}
.canvas-heading > div {
  display: flex;
  gap: 10px;
  align-items: center;
}
.canvas-heading > div > span:first-child {
  font-size: 10px;
  letter-spacing: 1.2px;
  font-weight: 600;
}
.canvas-heading button {
  font-size: 12px;
  color: var(--muted);
  padding: 5px;
}
.dot-separator {
  color: #a4adba;
}
.ruler {
  height: 24px;
  min-height: 24px;
  width: min(794px, 100%);
  display: flex;
  justify-content: space-between;
  padding: 0 10%;
  font-size: 9px;
  color: #808a98;
  border-bottom: 1px solid #c4ccd7;
  background: repeating-linear-gradient(
      to right,
      transparent 0,
      transparent calc(2.5% - 1px),
      #c9d0db calc(2.5% - 1px),
      #c9d0db 2.5%
    )
    bottom/80% 5px no-repeat;
}
.ruler span {
  padding-bottom: 8px;
}
rich-text-box {
  display: block;
  width: min(794px, 100%);
  min-height: 750px;
  flex: none;
  box-shadow: 0 3px 15px #283e5914;
  --rtw-page-background: #fff;
  --rtw-text-color: #252c37;
}
.canvas-bottom {
  font-size: 11px;
  color: #88909c;
  margin-top: 17px;
}
.inspector-tabs {
  display: flex;
  margin: 0 15px 20px;
  padding: 3px;
  background: #e8ecf1;
  border-radius: 5px;
  gap: 3px;
}
.inspector-tabs button {
  height: 28px;
  flex: 1;
  font-size: 16px;
  color: var(--muted);
}
.inspector-tabs .active {
  color: var(--accent);
  background: var(--chrome);
  box-shadow: 0 1px 3px #00000010;
}
.inspector-section {
  padding: 0 16px 20px;
  margin: 0 0 18px;
  border-bottom: 1px solid var(--line);
}
.inspector-section h3 {
  font-size: 11px;
  letter-spacing: 0.8px;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 14px;
  font-weight: 600;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12px;
  margin-bottom: 13px;
}
.field select,
.field input {
  width: 100%;
  font-size: 12px;
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.property-row {
  display: flex;
  justify-content: space-between;
  margin: 12px 0;
  font-size: 12px;
  color: var(--muted);
}
.property-row strong {
  font-weight: 500;
  color: var(--ink);
}
.paper-mini {
  height: 123px;
  width: 87px;
  margin: 7px auto 15px;
  border: 1px solid #cfd6de;
  background: white;
  box-shadow: 0 2px 6px #0000000a;
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.paper-mini i {
  display: block;
  height: 2px;
  background: #d7dfea;
}
.paper-mini i:first-child {
  height: 5px;
  background: #769ccc;
  width: 75%;
  margin-bottom: 5px;
}
.paper-mini i:last-child {
  width: 65%;
}
.statusbar {
  height: 30px;
  background: var(--chrome);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 16px;
  flex: none;
  font-size: 11px;
  color: var(--muted);
}
.statusbar button {
  font-size: 11px;
  color: var(--muted);
  padding: 3px;
}
.status-spacer {
  flex: 1;
}
.statusbar input[type="range"] {
  appearance: auto;
  accent-color: var(--accent);
  height: 16px;
  width: 90px;
  padding: 0;
  border: 0;
  background: transparent;
}
.statusbar #zoom-label {
  width: 30px;
}
.examples {
  padding: 12px;
}
.example-card {
  border: 1px solid var(--line);
  background: var(--chrome);
  text-align: left;
  padding: 12px;
  margin-bottom: 9px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.example-card strong {
  font-size: 13px;
}
.example-card span {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
}
.note {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
}
.plain-button {
  border: 1px solid var(--line);
  padding: 7px 10px;
  font-size: 12px;
  background: var(--chrome);
}
.wide {
  width: 100%;
  text-align: left;
  margin-bottom: 7px;
}
#find-tools {
  padding: 0 13px 15px;
}
#find-tools input {
  width: 100%;
  font-size: 12px;
}
#find-tools > button {
  margin-top: 7px;
  width: 100%;
}
.find-results {
  font-size: 11px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.export-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 12px 9px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 12px;
}
.export-item span {
  color: var(--muted);
  font-size: 10px;
}
.comment {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--chrome);
  margin: 12px 0;
  font-size: 12px;
  line-height: 1.7;
}
.comment strong {
  display: block;
  font-size: 11px;
  color: var(--accent);
}
.comment small {
  color: var(--muted);
}
.comment button {
  font-size: 11px;
  color: var(--accent);
  padding: 4px 0;
  margin-right: 14px;
}
.code-area {
  width: 100%;
  height: 300px;
  font:
    11px/1.7 ui-monospace,
    SFMono-Regular,
    Consolas,
    monospace;
  white-space: pre;
  tab-size: 2;
}
.source-buttons {
  display: flex;
  gap: 6px;
  margin: 10px 0;
}
.source-buttons select {
  flex: 1;
  min-width: 0;
  font-size: 12px;
}
.source-buttons button {
  font-size: 12px;
  background: var(--accent);
  color: white;
  padding: 6px 9px;
}
dialog {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--chrome);
  color: var(--ink);
  padding: 22px;
  width: min(510px, 90vw);
  box-shadow: 0 20px 100px #0004;
}
dialog::backdrop {
  background: #18283e55;
  backdrop-filter: blur(2px);
}
.dialog-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.dialog-title h2 {
  margin: 0;
  font-size: 19px;
}
.dialog-title button {
  font-size: 25px;
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}
.dialog-actions button {
  padding: 8px 16px;
}
.dialog-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}
.dialog-field textarea {
  min-height: 110px;
}
.dialog-field small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
#toast {
  position: fixed;
  bottom: 47px;
  left: 50%;
  transform: translate(-50%, 10px);
  padding: 12px 20px;
  border-radius: 6px;
  background: #1e3049;
  color: white;
  font-size: 13px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: 0.2s;
  max-width: 80vw;
  z-index: 100;
}
#toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}
.hide-navigation .workspace {
  grid-template-columns: minmax(350px, 1fr) 240px;
}
.hide-navigation .navigation {
  display: none;
}
.hide-inspector .workspace {
  grid-template-columns: 222px minmax(350px, 1fr);
}
.hide-inspector .inspector {
  display: none;
}
.hide-navigation.hide-inspector .workspace,
.focus .workspace {
  grid-template-columns: 1fr;
}
.focus .navigation,
.focus .inspector,
.focus .ribbon,
.focus .tabs {
  display: none;
}
.help-key {
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 10px;
}
.dark {
  color-scheme: dark;
  --ink: #e4e9f1;
  --muted: #9aa8bb;
  --chrome: #202733;
  --surface: #1b222e;
  --canvas: #141b25;
  --line: #333d4d;
  --hover: #303c4e;
  --accent: #74aeff;
  --accent-soft: #273d5a;
}
.dark .share-button,
.dark .primary {
  color: #111d2b;
}
.dark .inspector-tabs {
  background: #141b25;
}
.dark .ribbon {
  border-color: var(--line);
}
.dark rich-text-box {
  --rtw-page-background: #fff;
  --rtw-text-color: #252c37;
}
.dark .paper-mini {
  opacity: 0.8;
}
@media (min-width: 1550px) {
  .workspace {
    grid-template-columns: 245px minmax(350px, 1fr) 260px;
  }
  .canvas {
    padding-left: 50px;
    padding-right: 50px;
  }
}
@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 190px minmax(320px, 1fr);
  }
  .inspector {
    display: none;
  }
  .save-state {
    display: none;
  }
  .tabs-tail {
    display: none;
  }
  .hide-navigation .workspace {
    grid-template-columns: 1fr;
  }
  .hide-inspector .workspace {
    grid-template-columns: 190px minmax(320px, 1fr);
  }
  .canvas {
    padding: 0 18px 25px;
  }
}
@media (max-width: 760px) {
  .titlebar {
    padding: 0 10px;
    gap: 9px;
  }
  .brand strong {
    display: none;
  }
  .divider {
    display: none;
  }
  .title-actions {
    gap: 10px;
  }
  .title-actions > a {
    display: none;
  }
  #document-title {
    width: 160px;
  }
  .share-button {
    font-size: 11px;
    padding: 7px 9px;
  }
  .tabs {
    padding: 0 4px;
    gap: 0;
    overflow-x: auto;
  }
  .tabs > button {
    padding: 0 10px;
    font-size: 12px;
  }
  .ribbon {
    height: 100px;
    padding-left: 8px;
  }
  .workspace,
  .hide-inspector .workspace {
    grid-template-columns: 1fr;
  }
  .navigation {
    display: none;
  }
  .canvas {
    padding: 0 8px 20px;
  }
  .ruler {
    display: none;
  }
  .canvas-heading {
    height: 34px;
  }
  .statusbar {
    gap: 10px;
    padding: 0 8px;
  }
  .statusbar #selection-status,
  .statusbar #editor-mode,
  .statusbar #show-navigation {
    display: none;
  }
  rich-text-box {
    min-height: 600px;
  }
  .brand-icon {
    height: 26px;
    width: 26px;
  }
  .statusbar input[type="range"] {
    width: 60px;
  }
}
rich-text-box::part(viewport) {
  padding: 0;
  background: transparent;
  overflow: visible;
  scrollbar-gutter: auto;
}
rich-text-box::part(editor) {
  width: 100%;
  min-width: 0;
  border: 1px solid #d7dce5;
  box-shadow: none;
  color: #252c37;
  background: #fff;
}
.pdf-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.pdf-tools button {
  border: 1px solid var(--line);
  padding: 9px;
}
.pdf-preview {
  width: 100%;
  height: 430px;
  border: 1px solid var(--line);
  margin-top: 12px;
}
.style-card {
  width: 102px;
  flex-shrink: 0;
}
.style-card strong {
  white-space: nowrap;
}
#editor[view-mode="continuous"] {
  min-height: 750px;
}
.pdf-tools .field {
  margin: 0;
}
rich-text-toolbar {
  width: 100%;
}
.ribbon:has(rich-text-toolbar) {
  padding: 5px 14px;
  height: auto;
  min-height: 96px;
}
.page-preview-dialog {
  width: min(1120px, 96vw);
  max-height: 94vh;
}
.page-preview-dialog flow-document-page-viewer {
  display: block;
  max-height: 80vh;
  overflow: auto;
}
body.dark rich-text-toolbar {
  --rt-toolbar-background: #1c2a40;
  --rt-toolbar-color: #dce6f5;
  --rt-toolbar-border: #35455c;
  --rt-toolbar-hover: #2b4162;
}
.pdf-workspace-dialog {
  width: min(1200px, 96vw);
  height: 90vh;
}
.pdf-workspace-dialog rich-pdf-editor {
  display: block;
  height: calc(100% - 64px);
}
.collaboration-dialog {
  width: min(1320px, 96vw);
  max-height: 94vh;
}
.collaboration-peers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.collaboration-peers section {
  min-width: 0;
}
.collaboration-peers rich-text-box {
  display: block;
  height: 360px;
  border: 1px solid #cbd5e1;
}
.collaboration-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  margin: 12px 0;
}
@media (max-width: 800px) {
  .collaboration-peers {
    grid-template-columns: 1fr;
  }
}