:root {
  color: #1e2925;
  background: #e9ece8;
  font-family:
    Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
.file-button {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid #b8c2bd;
  border-radius: 9px;
  background: #fff;
  color: #263a32;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

button:disabled {
  border-color: #d5d9d7;
  background: #dfe3e1;
  color: #8a938f;
  cursor: not-allowed;
}

.workspace {
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 92px;
  padding: 18px 28px;
  border-bottom: 1px solid #cbd2ce;
  background: rgb(247 248 246 / 92%);
}

.topbar-primary {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 32px;
  min-width: 0;
}

.topbar-brand {
  flex: none;
}

.topbar-brand-title {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.app-version {
  padding: 2px 7px;
  border: 1px solid #c8d5cf;
  border-radius: 999px;
  background: #edf3f0;
  color: #527061;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.035em;
  white-space: nowrap;
}

.document-summary {
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-width: min(42vw, 520px);
  padding-left: 28px;
  border-left: 1px solid #d4dad7;
}

.document-summary > strong {
  overflow: hidden;
  font-size: 0.82rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.document-summary .render-status {
  max-width: 100%;
  margin-top: 3px;
}

.eyebrow {
  margin: 0 0 4px;
  color: #3b755d;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}

.topbar-actions {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  gap: 10px;
}

.file-button {
  display: inline-flex;
  align-items: center;
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.editor-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(520px, 1.2fr);
  flex: 1;
  min-height: 0;
  transition: grid-template-columns 180ms ease;
}

.editor-layout.is-source-collapsed {
  grid-template-columns: 48px minmax(520px, 1fr);
}

.editor-panel,
.preview-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.editor-panel {
  border-right: 1px solid #cbd2ce;
  background: #f6f7f5;
}

.source-panel-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
}

.source-panel-content[hidden] {
  display: none;
}

.source-panel-toggle {
  min-height: 32px;
  padding: 0 10px;
  border-color: #c9d4ce;
  background: #f8fbf9;
  color: #4f695e;
  font-size: 0.7rem;
}

.source-panel-restore {
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 14px 0;
  border: 0;
  border-radius: 0;
  background: #f0f3f1;
  color: #4f695e;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
}

.source-panel-restore:hover {
  background: #e4ebe7;
  color: #356c55;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 66px;
  padding: 12px 20px;
  border-bottom: 1px solid #d9dedb;
  background: rgb(255 255 255 / 70%);
}

.panel-heading > div {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.panel-heading strong {
  overflow: hidden;
  font-size: 0.9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-kicker {
  margin-bottom: 3px;
  color: #7a8580;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.render-status {
  flex: none;
  max-width: 48%;
  overflow: hidden;
  color: #4f695e;
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.render-status.is-error {
  color: #a23d3d;
}

.preview-heading-actions {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
  max-width: 68%;
}

.preview-toolbar {
  display: flex;
  flex: none;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 20px;
  border-bottom: 1px solid #d9dedb;
  background: rgb(255 255 255 / 58%);
}

.preview-page-control {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: 5px;
  color: #5d7168;
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.preview-page-control input {
  width: 48px;
  height: 30px;
  padding: 0 6px;
  border: 1px solid #c9d4ce;
  border-radius: 7px;
  outline: 0;
  background: #fff;
  color: #356c55;
  font: inherit;
  font-weight: 700;
  text-align: center;
}

.preview-page-control input:focus {
  border-color: #74a88f;
  box-shadow: 0 0 0 3px rgb(116 168 143 / 16%);
}

.preview-zoom-control {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #5d7168;
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
}

.preview-zoom-slider {
  width: 150px;
  accent-color: #4f8a6f;
}

.preview-zoom-number {
  display: flex;
  width: 68px;
  height: 30px;
  align-items: center;
  border: 1px solid #c9d4ce;
  border-radius: 7px;
  background: #fff;
}

.preview-zoom-number:focus-within {
  border-color: #74a88f;
  box-shadow: 0 0 0 3px rgb(116 168 143 / 16%);
}

.preview-zoom-number input {
  min-width: 0;
  width: 100%;
  height: 28px;
  padding: 0 2px 0 8px;
  border: 0;
  outline: 0;
  background: transparent;
  color: #356c55;
  font: inherit;
  font-weight: 700;
  text-align: right;
}

.preview-zoom-number > span:last-child {
  padding-right: 7px;
  color: #7a8580;
}

.preview-zoom-reset {
  min-height: 30px;
  padding: 0 8px;
  border-color: #c9d4ce;
  background: #f8fbf9;
  color: #4f695e;
  font-size: 0.68rem;
}

.preview-zoom-reset:disabled {
  color: #9ba49f;
}

.preview-mode-control {
  display: inline-flex;
  flex: none;
  padding: 2px;
  border: 1px solid #c9d4ce;
  border-radius: 8px;
  background: #eef2ef;
}

.preview-mode-control button {
  min-height: 28px;
  padding: 0 9px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #68766f;
  font-size: 0.69rem;
}

.preview-mode-control button.is-active {
  background: #fff;
  color: #356c55;
  box-shadow: 0 1px 4px rgb(37 49 43 / 12%);
}

.theme-control {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
}

.theme-control select {
  min-width: 0;
  max-width: 220px;
  height: 34px;
  padding: 0 28px 0 10px;
  overflow: hidden;
  border: 1px solid #c9d4ce;
  border-radius: 8px;
  outline: 0;
  background: #f8fbf9;
  color: #356c55;
  font-size: 0.74rem;
  font-weight: 700;
  text-overflow: ellipsis;
}

.theme-control select:focus {
  border-color: #74a88f;
  box-shadow: 0 0 0 3px rgb(116 168 143 / 16%);
}

.local-theme-mark {
  padding: 4px 7px;
  border-radius: 999px;
  background: #e3eee8;
  color: #356c55;
  font-size: 0.65rem;
  font-weight: 800;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

textarea {
  flex: 1;
  width: 100%;
  min-height: 0;
  padding: 24px;
  border: 0;
  outline: 0;
  resize: none;
  background: #f6f7f5;
  color: #26312d;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.86rem;
  line-height: 1.72;
  tab-size: 2;
}

textarea:focus {
  box-shadow: inset 3px 0 #74a88f;
}

.preview-panel {
  background:
    linear-gradient(90deg, rgb(37 52 45 / 4%) 1px, transparent 1px),
    linear-gradient(rgb(37 52 45 / 4%) 1px, transparent 1px),
    #e6e9e5;
  background-size: 22px 22px;
}

.preview-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 0 30px;
  scrollbar-color: #8d9993 #dfe4e1;
  scrollbar-width: auto;
}

.preview-scroll::-webkit-scrollbar {
  width: 14px;
  height: 14px;
}

.preview-scroll::-webkit-scrollbar-track {
  background: #dfe4e1;
}

.preview-scroll::-webkit-scrollbar-thumb {
  min-height: 48px;
  border: 3px solid #dfe4e1;
  border-radius: 999px;
  background: #8d9993;
}

.preview-scroll::-webkit-scrollbar-thumb:hover {
  background: #6f7d76;
}

.paper {
  height: 100%;
  margin: 0 auto;
  background: transparent;
}

.preview-frame {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  background: transparent;
}

.preview-loading {
  display: grid;
  min-height: 500px;
  place-items: center;
  color: #7a8580;
  font-size: 0.9rem;
}

.precise-pdf-document {
  display: flex;
  min-width: 100%;
  flex-direction: column;
  align-items: safe center;
  gap: 24px;
  padding: 34px 30px;
}

.precise-pdf-page {
  position: relative;
  flex: none;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 48px rgb(37 49 43 / 16%);
}

.precise-pdf-page canvas,
.precise-pdf-page .textLayer {
  position: absolute;
  inset: 0;
}

.precise-pdf-page canvas {
  display: block;
  max-width: 100%;
  opacity: 0;
  transition: opacity 80ms ease-out;
}

.precise-pdf-page canvas.is-rendered {
  opacity: 1;
}

.precise-pdf-page .textLayer {
  z-index: 1;
  overflow: hidden;
  color-scheme: only light;
  opacity: 1;
  line-height: 1;
  letter-spacing: normal;
  word-spacing: normal;
  text-size-adjust: none;
  forced-color-adjust: none;
  transform-origin: 0 0;
  caret-color: CanvasText;
  --min-font-size: 1;
  --text-scale-factor:
    calc(var(--total-scale-factor) * var(--min-font-size));
  --min-font-size-inv: calc(1 / var(--min-font-size));
}

.precise-pdf-page .textLayer :is(span, br) {
  position: absolute;
  color: transparent;
  white-space: pre;
  cursor: text;
  user-select: text;
  transform-origin: 0 0;
}

.precise-pdf-page .textLayer > :not(.markedContent),
.precise-pdf-page
  .textLayer
  .markedContent
  span:not(.markedContent) {
  z-index: 1;
  font-size:
    calc(var(--text-scale-factor) * var(--font-height, 0));
  transform:
    rotate(var(--rotate, 0deg))
    scaleX(var(--scale-x, 1))
    scale(var(--min-font-size-inv));
}

.precise-pdf-page .textLayer .markedContent {
  display: contents;
}

.precise-pdf-page .textLayer span[role="img"] {
  cursor: default;
  user-select: none;
}

.precise-pdf-page .textLayer ::selection {
  color: transparent;
  background: rgb(0 100 255 / 25%);
}

.precise-pdf-page .textLayer br::selection {
  background: transparent;
}

.precise-pdf-page .textLayer .endOfContent {
  position: absolute;
  display: block;
  z-index: 0;
  inset: 100% 0 0;
  cursor: default;
  user-select: none;
}

.precise-pdf-page .textLayer.selecting .endOfContent {
  top: 0;
}

.precise-pdf-page-placeholder,
.precise-pdf-page-error {
  position: absolute;
  display: grid;
  padding: 20px;
  inset: 0;
  place-items: center;
  color: #7a8580;
  background: #fff;
  font-size: 0.82rem;
}

.precise-pdf-page-error {
  z-index: 2;
  color: #a23d3d;
  background: rgb(255 255 255 / 92%);
}

.precise-pdf-status {
  display: grid;
  align-content: center;
  gap: 14px;
  min-height: 500px;
  place-items: center;
  color: #6f7d76;
  font-size: 0.86rem;
}

.precise-pdf-status.is-error {
  color: #a23d3d;
}

.settings-layer {
  position: fixed;
  z-index: 20;
  inset: 0;
}

.settings-backdrop {
  position: absolute;
  width: 100%;
  min-height: 100%;
  padding: 0;
  border: 0;
  border-radius: 0;
  inset: 0;
  background: rgb(24 35 30 / 38%);
}

.settings-drawer {
  position: absolute;
  display: flex;
  flex-direction: column;
  width: min(390px, 100vw);
  height: 100%;
  inset: 0 0 0 auto;
  background: #f8faf8;
  box-shadow: -20px 0 60px rgb(26 40 34 / 20%);
}

.settings-heading,
.settings-actions {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid #d9dedb;
  background: #fff;
}

.settings-heading h2 {
  margin: 1px 0 0;
  color: #25332d;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.35rem;
  font-weight: 500;
}

.icon-button {
  width: 36px;
  min-height: 36px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #5f6c66;
  font-size: 1.7rem;
  line-height: 1;
}

.settings-content {
  flex: 1;
  overflow: auto;
  padding: 4px 20px 28px;
}

.settings-section {
  padding: 20px 0;
  border-bottom: 1px solid #dfe4e1;
}

.settings-section:last-child {
  border-bottom: 0;
}

.settings-section h3 {
  margin: 0 0 14px;
  color: #30443a;
  font-size: 0.88rem;
}

.setting-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.setting-section-title h3 {
  margin: 0;
}

.setting-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 42px;
  color: #526159;
  font-size: 0.78rem;
}

.setting-field.stacked {
  align-items: stretch;
  flex-direction: column;
  gap: 7px;
  padding: 5px 0;
}

.setting-field > select,
.setting-field > input,
.header-slot > input {
  width: 190px;
  min-width: 0;
  height: 36px;
  padding: 0 10px;
  border: 1px solid #c9d4ce;
  border-radius: 7px;
  outline: 0;
  background: #fff;
  color: #263a32;
  font-size: 0.78rem;
}

.setting-field.stacked > input {
  width: 100%;
}

.setting-field input:focus,
.setting-field select:focus,
.header-slot > input:focus {
  border-color: #74a88f;
  box-shadow: 0 0 0 3px rgb(116 168 143 / 16%);
}

.setting-field input:disabled,
.setting-field select:disabled,
.header-slot > input:disabled {
  background: #edf0ee;
  color: #929b97;
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  border: 0;
}

.segmented-control legend {
  margin-bottom: 8px;
  color: #526159;
  font-size: 0.78rem;
}

.segmented-control label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  border: 1px solid #c9d4ce;
  border-radius: 7px;
  background: #fff;
  color: #3f554a;
  font-size: 0.78rem;
  cursor: pointer;
}

.segmented-control label:has(input:checked) {
  border-color: #74a88f;
  background: #e9f3ed;
  color: #2d654d;
  font-weight: 700;
}

.margin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 18px;
}

.margin-grid .setting-field {
  align-items: flex-start;
  flex-direction: column;
  gap: 5px;
}

.length-input {
  display: flex;
  align-items: center;
  width: 100%;
  height: 36px;
  border: 1px solid #c9d4ce;
  border-radius: 7px;
  background: #fff;
}

.length-input:focus-within {
  border-color: #74a88f;
  box-shadow: 0 0 0 3px rgb(116 168 143 / 16%);
}

.length-input input {
  min-width: 0;
  width: 100%;
  height: 34px;
  padding: 0 4px 0 10px;
  border: 0;
  outline: 0;
  background: transparent;
  color: #263a32;
  font-size: 0.78rem;
}

.length-input span {
  padding-right: 9px;
  color: #7a8580;
  font-size: 0.7rem;
}

.switch-control {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #526159;
  font-size: 0.74rem;
  cursor: pointer;
}

.switch-control.compact {
  width: 66px;
  flex: none;
}

.divider-control {
  margin-top: 10px;
}

.header-slot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.header-slot > input {
  flex: 1;
  width: auto;
}

.setting-hint {
  margin: 7px 0 10px;
  color: #7a8580;
  font-size: 0.69rem;
  line-height: 1.55;
}

.settings-actions {
  justify-content: flex-end;
  border-top: 1px solid #d9dedb;
  border-bottom: 0;
}

.secondary-button {
  background: #f3f5f4;
  color: #58665f;
}

@media (max-width: 900px) {
  .workspace {
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .topbar {
    align-items: flex-start;
    padding: 16px;
  }

  .topbar-primary {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .document-summary {
    width: 100%;
    max-width: none;
    padding-top: 10px;
    padding-left: 0;
    border-top: 1px solid #d4dad7;
    border-left: 0;
  }

  .topbar-actions {
    flex-direction: column;
  }

  .editor-layout {
    grid-template-columns: 1fr;
  }

  .editor-layout.is-source-collapsed {
    grid-template-columns: 1fr;
  }

  .editor-panel,
  .preview-panel {
    min-height: 650px;
  }

  textarea {
    min-height: 560px;
  }

  .editor-panel {
    border-right: 0;
    border-bottom: 1px solid #cbd2ce;
  }

  .editor-layout.is-source-collapsed .editor-panel {
    height: 44px;
    min-height: 44px;
  }

  .source-panel-restore {
    height: 44px;
    min-height: 44px;
    padding: 0 16px;
    letter-spacing: 0;
    writing-mode: horizontal-tb;
  }

  .preview-scroll {
    padding: 0 10px;
  }

  .paper {
    margin: 0 auto;
  }

  .theme-control {
    max-width: 62%;
  }

  .preview-heading-actions {
    flex-wrap: wrap;
  }

  .preview-toolbar {
    flex-wrap: wrap;
    justify-content: space-between;
    padding-inline: 10px;
  }

  .preview-zoom-control {
    flex: 1 0 100%;
    width: 100%;
  }

  .preview-zoom-slider {
    flex: 1;
    width: auto;
  }

  .theme-control select {
    max-width: 150px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .editor-layout {
    transition: none;
  }
}

@media (max-width: 520px) {
  .topbar-brand-title {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .settings-drawer {
    width: 100vw;
  }
}