:root {
  color-scheme: light;
  --bg: #eef1f6;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --ink: #111827;
  --muted: #667085;
  --line: #d6dbe5;
  --accent: #136f63;
  --accent-strong: #0f5b51;
  --danger: #b42318;
  --shadow: 0 14px 38px rgba(15, 23, 42, 0.12);
  --page-width: 8.5in;
  --page-height: 11in;
  --page-margin: 0.82in;
  --zoom: 1;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-app-theme="dark"] {
  color-scheme: dark;
  --bg: #10141b;
  --surface: #171c24;
  --surface-2: #111720;
  --ink: #edf2f7;
  --muted: #a7b0bf;
  --line: #303846;
  --accent: #2fb79f;
  --accent-strong: #62d2c1;
  --danger: #ff8a80;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
}

button,
input,
select {
  font: inherit;
}

button,
select,
.colors label {
  min-height: 34px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 6px;
}

.ghost {
  background: transparent;
}

button {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  padding: 0 10px;
  cursor: pointer;
}

button:hover,
select:hover,
.colors label:hover {
  border-color: #9aa4b2;
  background: var(--surface-2);
}

button.active {
  border-color: var(--accent);
  background: rgba(47, 183, 159, 0.16);
  color: var(--accent-strong);
}

.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.primary:hover {
  background: var(--accent-strong);
  color: #fff;
}

.app {
  height: 100vh;
  height: 100dvh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  overflow: hidden;
}

.topbar,
.toolbar,
.mobile-tabs,
.statusbar {
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  border-bottom: 1px solid var(--line);
}

.mobile-tabs {
  display: none;
  gap: 6px;
  padding: 8px 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.mobile-tabs button {
  flex: 1 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #136f63;
  color: #fff;
  font-weight: 800;
  font-size: 22px;
}

h1,
h2 {
  margin: 0;
}

.brand h1 {
  font-size: 18px;
  line-height: 1.1;
}

.title-input {
  width: min(48vw, 420px);
  border: 0;
  padding: 3px 0;
  color: var(--muted);
  background: transparent;
}

.title-input:focus {
  outline: 2px solid #99d6cf;
  outline-offset: 2px;
}

.file-actions,
.toolbar,
.tool-group,
.panel-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
}

.toolbar {
  min-height: 58px;
  padding: 10px 14px;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tool-group {
  padding-right: 10px;
  border-right: 1px solid var(--line);
  flex: 0 0 auto;
}

.tool-group:last-child {
  border-right: 0;
}

.tool-group.compact {
  gap: 5px;
}

.toolbar select {
  padding: 0 8px;
  max-width: 170px;
}

.colors label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  font-weight: 700;
}

.range-tool {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  color: var(--muted);
  font-size: 14px;
}

.range-tool input {
  width: 96px;
  accent-color: var(--accent);
}

.colors input {
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.workspace {
  display: grid;
  grid-template-columns: clamp(240px, 18vw, 290px) minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.side-panel {
  border-right: 1px solid var(--line);
  background: var(--surface-2);
  padding: 14px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.panel-section {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.panel-section:first-child {
  padding-top: 0;
}

.panel-section h2 {
  margin-bottom: 10px;
  font-size: 13px;
  text-transform: uppercase;
  color: var(--muted);
}

.panel-section input[type="search"],
.panel-section input[type="text"],
.panel-section select {
  width: 100%;
  min-height: 36px;
  margin-bottom: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  background: var(--surface);
  color: var(--ink);
}

.font-upload {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.font-upload span {
  min-height: 34px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  background: var(--surface);
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-section label {
  display: grid;
  gap: 7px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 14px;
}

.panel-section .check-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
}

.check-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.panel-section input[type="range"] {
  width: 100%;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stats div {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.stats span {
  display: block;
  font-size: 24px;
  font-weight: 800;
}

.stats small {
  color: var(--muted);
}

.document-stage {
  overflow: auto;
  padding: clamp(18px, 3vw, 42px) clamp(12px, 3vw, 44px) 80px;
  -webkit-overflow-scrolling: touch;
  background-image:
    linear-gradient(90deg, transparent 0, transparent calc(50% - 1px), rgba(102, 112, 133, 0.12) calc(50% - 1px), rgba(102, 112, 133, 0.12) calc(50% + 1px), transparent calc(50% + 1px)),
    radial-gradient(circle at center, rgba(19, 111, 99, 0.08), transparent 44%);
  background-attachment: local;
}

.page {
  position: relative;
  width: var(--page-width);
  min-height: var(--page-height);
  transform-origin: top center;
  margin: 0 auto;
  padding: var(--page-margin);
  background: #fff;
  color: #111827;
  border: 1px solid #dfe4ec;
  box-shadow: var(--shadow);
  outline: 0;
  zoom: var(--zoom);
  line-height: 1.45;
  overflow-wrap: break-word;
}

.page::before {
  content: "Page 1";
  position: absolute;
  top: -26px;
  left: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page[data-theme="warm"] {
  background: #fffaf0;
  color: #111827;
}

.page[data-theme="mint"] {
  background: #f4fff9;
  color: #111827;
}

.page[data-theme="night"] {
  background: #18202d;
  color: #f8fafc;
}

:root[data-app-theme="dark"] .page {
  background: #0d1118;
  color: #f8fafc;
  border-color: #303846;
}

:root[data-app-theme="dark"] .page[data-theme="warm"] {
  background: #fffaf0;
  color: #111827;
}

:root[data-app-theme="dark"] .page[data-theme="mint"] {
  background: #f4fff9;
  color: #111827;
}

:root[data-app-theme="dark"] .page[data-theme="night"] {
  background: #0d1118;
  color: #f8fafc;
}

.page[data-size="a4"] {
  --page-width: 8.27in;
  --page-height: 11.69in;
}

.page[data-size="legal"] {
  --page-width: 8.5in;
  --page-height: 14in;
}

.page[data-margin="narrow"] {
  --page-margin: 0.45in;
}

.page[data-margin="wide"] {
  --page-margin: 1.15in;
}

.page:focus {
  box-shadow: 0 0 0 3px rgba(19, 111, 99, 0.16), var(--shadow);
}

.page.ink-mode {
  cursor: crosshair;
  touch-action: none;
  user-select: none;
}

.page.eraser-mode {
  cursor: cell;
}

.ink-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
  z-index: 2;
}

.ink-stroke {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ink-mode .ink-layer {
  pointer-events: none;
}

.page > :not(.ink-layer) {
  position: relative;
  z-index: 1;
}

.page h1 {
  margin: 0 0 16px;
  font-size: 34px;
}

.page h2 {
  margin: 24px 0 12px;
  font-size: 25px;
}

.page h3 {
  margin: 18px 0 8px;
  font-size: 20px;
}

.page p,
.page ul,
.page ol,
.page blockquote,
.page pre {
  margin-top: 0;
  margin-bottom: 13px;
}

.page blockquote {
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  color: #475467;
}

.page pre {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f6f8fb;
  white-space: pre-wrap;
}

.page img {
  max-width: 100%;
  height: auto;
}

.page table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
}

.page-break {
  display: block;
  height: 0;
  margin: 30px 0;
  border-top: 2px dashed #9aa4b2;
  break-after: page;
  page-break-after: always;
}

.page-break::after {
  content: "Page break";
  position: relative;
  top: -11px;
  display: inline-block;
  padding: 2px 8px;
  background: inherit;
  color: var(--muted);
  font-size: 12px;
}

.page-break::before {
  content: "Next page";
  position: absolute;
  right: 0;
  transform: translateY(-50%);
  padding: 2px 8px;
  background: inherit;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.page td,
.page th {
  min-width: 70px;
  border: 1px solid #9aa4b2;
  padding: 8px;
}

.statusbar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 14px;
  color: var(--muted);
  font-size: 13px;
}

@media (min-width: 1440px) {
  .document-stage {
    padding-left: 56px;
    padding-right: 56px;
  }

  .page {
    margin-top: 6px;
  }
}

@media (max-width: 1180px) {
  .topbar {
    gap: 12px;
  }

  .file-actions {
    flex-wrap: nowrap;
    justify-content: flex-end;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: thin;
  }

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .side-panel {
    display: grid;
    grid-template-columns: minmax(220px, 1.1fr) minmax(210px, 1fr) minmax(180px, 0.8fr) minmax(180px, 0.8fr);
    gap: 14px;
    max-height: 220px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    overflow: auto;
  }

  .panel-section {
    border-bottom: 0;
    padding: 0;
  }

  .document-stage {
    padding: 22px 14px 70px;
  }

  .page {
    width: min(100%, var(--page-width));
    min-height: min(var(--page-height), 82vh);
  }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .app {
    min-height: 100dvh;
    height: auto;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 10px;
  }

  .brand {
    min-width: 0;
    width: 100%;
  }

  .mark {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

  .file-actions {
    width: 100%;
    justify-content: flex-start;
  }

  button,
  select,
  .colors label {
    min-height: 40px;
  }

  button {
    min-width: 40px;
    padding: 0 11px;
  }

  .toolbar {
    min-height: 52px;
    padding: 8px 10px;
    gap: 8px;
  }

  .mobile-tabs {
    display: flex;
  }

  .toolbar .tool-group {
    display: none;
  }

  body[data-toolbar-tab="text"] .toolbar .tool-group[data-tab="text"],
  body[data-toolbar-tab="insert"] .toolbar .tool-group[data-tab="insert"],
  body[data-toolbar-tab="ink"] .toolbar .tool-group[data-tab="ink"],
  body[data-toolbar-tab="page"] .toolbar .tool-group[data-tab="page"],
  body[data-toolbar-tab="review"] .toolbar .tool-group[data-tab="review"] {
    display: flex;
  }

  .tool-group {
    padding-right: 8px;
  }

  .workspace {
    overflow: visible;
  }

  .side-panel {
    grid-template-columns: 1fr;
    max-height: none;
    padding: 12px;
  }

  .title-input {
    width: min(82vw, 420px);
  }

  .document-stage {
    overflow-x: hidden;
    padding: 12px 8px 48px;
  }

  .page {
    width: 100%;
    min-height: 76vh;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  }

  .page::before {
    top: -20px;
  }

  .page h1 {
    font-size: 28px;
  }

  .page h2 {
    font-size: 22px;
  }

  .page h3 {
    font-size: 18px;
  }

  .statusbar {
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 430px) {
  .topbar {
    padding: 9px;
  }

  .file-actions,
  .toolbar {
    gap: 6px;
  }

  button {
    padding: 0 10px;
  }

  .toolbar select {
    max-width: 138px;
  }

  .stats {
    gap: 8px;
  }

  .stats div {
    padding: 10px;
  }

  .stats span {
    font-size: 22px;
  }

  .document-stage {
    padding-left: 6px;
    padding-right: 6px;
  }

  .page {
    padding: 18px;
    border-left: 0;
    border-right: 0;
  }
}

@media (max-height: 650px) and (min-width: 761px) {
  .topbar {
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .toolbar {
    min-height: 48px;
    padding-top: 7px;
    padding-bottom: 7px;
  }

  .side-panel {
    max-height: 168px;
  }

  .document-stage {
    padding-top: 14px;
    padding-bottom: 44px;
  }
}

@media (pointer: coarse) {
  button,
  select,
  .colors label,
  .panel-section input[type="search"],
  .panel-section input[type="text"],
  .panel-section .check-row {
    min-height: 44px;
  }
}

@media print {
  body {
    background: #fff;
    overflow: visible;
  }

  .topbar,
  .toolbar,
  .mobile-tabs,
  .side-panel,
  .statusbar {
    display: none;
  }

  .app,
  .workspace {
    display: block;
  }

  .document-stage {
    padding: 0;
    overflow: visible;
  }

  .page {
    width: auto;
    min-height: auto;
    margin: 0;
    padding: var(--page-margin);
    border: 0;
    box-shadow: none;
  }

  .page-break {
    margin: 0;
    border: 0;
  }

  .page-break::after {
    content: "";
  }
}