:root {
  --font-ui:
    ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --font-editor:
    "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:
    ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
:root {
  --ink: #16181d;
  --ink-soft: #495163;
  --muted: #7c8494;
  --canvas: #d7dbe3;
  --surface: #f4f5f7;
  --paper: #ffffff;
  --line: #dde1e8;
  --line-soft: #e7e9ee;
  --accent: #2f57d6;
  --t-head: #2452a3;
  --t-strong: #24262b;
  --t-em: #3d4148;
  --t-code: #1f7a5c;
  --t-fence: #6b7280;
  --t-link: #1d4ed8;
  --t-url: #8a8f98;
  --t-math: #6d5bb3;
  --t-list: #2452a3;
  --t-quote: #5b6472;
  --t-punct: #9095a0;
  --r-sm: 4px;
  --r-md: 6px;
}

::selection {
  background: rgba(47, 87, 214, 0.22);
}

* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html,
body {
  height: 100%;
  margin: 0;
}
body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

header {
  display: flex;
  align-items: center;
  height: 52px;
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  flex: none;
  position: relative;
  z-index: 1;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.03em;
  color: var(--ink);
  cursor: pointer;
  transition: opacity 0.12s ease;
}
.wordmark-icon {
  width: 21px;
  height: 16px;
  flex-shrink: 0;
}
.wordmark:hover {
  opacity: 0.7;
}
.spacer {
  flex: 1;
}
.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
}
.toolbar-cloud-group {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 10px;
}
.toolbar-cloud-group .icon-btn {
  width: 26px;
  height: 26px;
}
.toolbar-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 30px;
}
#download {
  margin-left: 10px;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
}
.status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #2d8a4e;
  flex: none;
  transition: background 0.2s ease;
}
.status.busy::before {
  background: #c9962f;
}
.status.error::before {
  background: #c73a3a;
}
.divider {
  width: 1px;
  height: 20px;
  background: var(--line);
}

.doc-name {
  display: flex;
  align-items: baseline;
  gap: 1px;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.12s ease;
}
.doc-name:hover {
  border-bottom-color: var(--line);
}
.doc-name:focus-within {
  border-bottom-color: var(--accent);
  box-shadow: 0 1px 0 0 var(--accent);
}
.doc-name input {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  border: 0;
  background: transparent;
  outline: none;
  width: 150px;
  max-width: 30vw;
  text-align: right;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  padding: 0;
  transition: color 0.12s ease;
}
.doc-name:hover input,
.doc-name:focus-within input {
  color: var(--ink);
}
.doc-name:focus-within input {
  text-align: left;
}
.doc-name input:focus-visible {
  outline: none;
}
.doc-name .ext {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: var(--r-md);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}
.icon-btn:hover {
  background: rgba(127, 127, 127, 0.12);
  color: var(--ink);
}
.icon-btn svg {
  width: 16px;
  height: 16px;
  display: block;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  cursor: pointer;
  background: var(--paper);
  color: var(--ink-soft);
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease,
    transform 0.08s ease;
}
.btn:hover {
  background: rgba(127, 127, 127, 0.08);
  border-color: #c3c8d2;
  color: var(--ink);
}
.btn:active {
  box-shadow: none;
  transform: scale(0.96);
}
.btn:disabled {
  color: var(--muted);
  cursor: default;
  background: var(--surface);
  border-color: var(--line);
  transform: none;
}
.btn.loading:disabled {
  color: var(--ink-soft);
  background: var(--paper);
  border-color: var(--line);
}
.btn.success:disabled {
  color: #1f6b3c;
  background: rgba(45, 138, 78, 0.07);
  border-color: rgba(45, 138, 78, 0.3);
}
.btn:focus-visible,
.icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}
.btn-icon svg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(0.6);
  transition:
    opacity 0.15s ease,
    transform 0.15s ease;
}
.btn-icon .icon-download {
  opacity: 1;
  transform: scale(1);
}
.btn-icon .spinner {
  position: absolute;
  inset: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid rgba(73, 81, 99, 0.25);
  border-top-color: var(--ink-soft);
  opacity: 0;
  transition: opacity 0.15s ease;
  animation: btn-spin 0.6s linear infinite;
}
.btn.loading .icon-download {
  opacity: 0;
  transform: scale(0.6);
}
.btn.loading .spinner {
  opacity: 1;
}
.btn.success .icon-download {
  opacity: 0;
  transform: scale(0.6);
}
.btn.success .icon-check {
  opacity: 1;
  transform: scale(1);
}
@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

.guide-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease;
}
.guide-overlay.show {
  display: flex;
}
.guide-overlay.fade {
  opacity: 0;
  pointer-events: none;
}
.guide {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 26px 30px;
  max-width: 380px;
  width: 90%;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  font-family: var(--font-ui);
  color: var(--ink);
}
.guide h2 {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.guide dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 14px;
  align-items: baseline;
}
.guide dt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: var(--r-sm);
  padding: 2px 7px;
  white-space: nowrap;
  text-align: right;
}
.guide dd {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}
.guide .dismiss {
  margin-top: 20px;
  text-align: center;
}
.guide .dismiss button {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  border: 0;
  background: none;
  color: var(--accent);
  cursor: pointer;
  padding: 6px 16px;
  border-radius: var(--r-sm);
  transition: background 0.12s ease;
}
.guide .dismiss button:hover {
  background: rgba(47, 87, 214, 0.08);
}

main {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 0;
}
.pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}
.pane.source {
  border-right: 1px solid var(--line);
}

.pane-head {
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  flex: none;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface);
  overflow-x: auto;
  overflow-y: hidden;
}
.pane-head > * {
  flex: none;
}
.pane-head .spacer {
  flex: 1 0 auto;
  min-width: 16px;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.stepper {
  display: flex;
  align-items: center;
  gap: 3px;
}
.stepper button {
  width: 22px;
  height: 22px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition:
    background 0.12s ease,
    color 0.12s ease;
}
.stepper button:hover {
  background: rgba(127, 127, 127, 0.12);
  color: var(--ink);
}
.stepper button:disabled {
  opacity: 0.4;
  cursor: default;
}
.stepper button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.stepper #sizeVal {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  min-width: 34px;
  text-align: center;
}
.head-divider {
  width: 1px;
  height: 18px;
  background: var(--line);
  margin: 0 10px;
}

.view-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 100%;
  flex: none;
}
.view-toggle-btn {
  height: 100%;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition:
    color 0.12s ease,
    border-color 0.12s ease;
}
.view-toggle-btn:hover {
  color: var(--ink);
}
.view-toggle-btn.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.view-toggle-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.theme-picker {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}
.theme-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 100%;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition:
    border-color 0.12s ease,
    color 0.12s ease;
}
.theme-trigger:hover {
  color: var(--ink);
}
.theme-trigger .code-icon {
  width: 13px;
  height: 13px;
  color: var(--muted);
  flex: none;
}
.theme-trigger-label {
  color: var(--muted);
}
.theme-trigger-value {
  font-weight: 500;
  color: var(--ink);
}
.theme-trigger .chevron {
  width: 9px;
  height: 9px;
  color: var(--muted);
  margin-left: 1px;
  transition: transform 0.15s ease;
}
.theme-picker.open .theme-trigger {
  border-bottom-color: var(--accent);
  color: var(--ink);
}
.theme-picker.open .chevron {
  transform: rotate(180deg);
}
.theme-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.theme-menu {
  position: fixed;
  z-index: 40;
  width: 220px;
  padding: 5px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  animation: menuIn 0.12s ease;
}
@keyframes menuIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.theme-menu-head {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 6px 8px 5px;
}
.theme-option {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 7px 8px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-align: left;
  transition: background 0.1s ease;
}
.theme-option:hover {
  background: rgba(47, 87, 214, 0.07);
}
.theme-option.selected {
  background: rgba(47, 87, 214, 0.1);
  font-weight: 500;
}
.theme-option:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.theme-option .sw {
  flex: none;
  width: 26px;
  height: 18px;
  border-radius: 4px;
  background: var(--a);
  border: 1px solid rgba(0, 0, 0, 0.12);
  position: relative;
  overflow: hidden;
}
.theme-option .sw::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 4px;
  width: 8px;
  height: 2px;
  border-radius: 1px;
  background: var(--b);
  box-shadow:
    0 4px 0 var(--c),
    10px 0 0 var(--d);
}
.theme-option .tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

.app-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 100%;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color 0.12s ease,
    border-color 0.12s ease;
}
.nav-btn svg {
  width: 11px;
  height: 11px;
  flex: none;
  color: var(--muted);
  transition:
    transform 0.12s ease,
    color 0.12s ease;
}
.nav-btn:hover {
  color: var(--ink);
}
.nav-btn:hover svg {
  color: var(--ink-soft);
  transform: translateX(1px);
}
.nav-btn.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.nav-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.doc-title-label {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-soft);
  max-width: 160px;
}
.doc-title-label .doc-title-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.doc-title-label .doc-title-name {
  border-bottom: 1px dashed var(--muted);
  padding-bottom: 2px;
}
.cloud-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 100%;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition:
    opacity 0.12s ease,
    color 0.12s ease;
}
.cloud-btn:hover {
  color: var(--ink);
}
.cloud-btn:disabled {
  cursor: default;
}
.cloud-btn:disabled:hover {
  opacity: 1;
}
.cloud-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.cloud-icon,
.cloud-icon-saved {
  width: 14px;
  height: 14px;
  flex: none;
  color: currentColor;
}
.cloud-icon-saved {
  display: none;
}
.cloud-btn-spinner {
  display: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid rgba(47, 87, 214, 0.28);
  border-top-color: var(--accent);
  flex: none;
  animation: btn-spin 0.6s linear infinite;
}
.cloud-btn.saving {
  color: var(--ink-soft);
}
.cloud-btn.saving .cloud-icon {
  display: none;
}
.cloud-btn.saving .cloud-btn-spinner {
  display: block;
  border-color: rgba(127, 127, 127, 0.28);
  border-top-color: var(--ink-soft);
}
.cloud-btn.saved {
  color: #1f6b3c;
  cursor: default;
}
.cloud-btn.saved .cloud-icon {
  display: none;
}
.cloud-btn.saved .cloud-icon-saved {
  display: block;
}
.cloud-btn.error {
  color: #c73a3a;
}

.header-account {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}
.signin-link {
  padding: 0 2px;
  height: 28px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  cursor: pointer;
}
.signin-link:hover {
  color: var(--ink);
}

.account-skeleton {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0;
}
.account-skeleton .sk {
  background: var(--line-soft);
  border-radius: var(--r-sm);
  animation: sk-pulse 1.1s ease-in-out infinite;
}
.account-skeleton .sk.avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  flex: none;
}
.account-skeleton .sk.line {
  height: 9px;
  flex: 1;
  max-width: 120px;
}
@keyframes sk-pulse {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

.account-control {
  position: relative;
}
.account-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 3px 5px 3px 3px;
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-align: left;
  transition: background 0.12s ease;
}
.account-trigger:hover {
  background: rgba(127, 127, 127, 0.1);
}
.account-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.account-avatar {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
}
.account-trigger .chevron {
  flex: none;
  width: 9px;
  height: 9px;
  color: var(--muted);
  transition: transform 0.15s ease;
}
.account-control.open .account-trigger .chevron {
  transform: rotate(180deg);
}
.account-control.open .account-trigger {
  background: rgba(127, 127, 127, 0.1);
}

.account-menu {
  position: fixed;
  z-index: 60;
  width: 200px;
  padding: 4px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  animation: menuIn 0.12s ease;
}
.account-menu-email {
  padding: 7px 9px 6px;
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 3px;
}
.account-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 9px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-align: left;
  transition: background 0.1s ease;
}
.account-menu-item:hover {
  background: rgba(47, 87, 214, 0.07);
}
.account-menu-item.danger {
  color: #c73a3a;
}
.account-menu-item.danger:hover {
  background: rgba(199, 58, 58, 0.08);
}
.account-menu-item svg {
  width: 13px;
  height: 13px;
  flex: none;
  color: var(--muted);
}
.account-menu-item.danger svg {
  color: #c73a3a;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(16, 20, 30, 0.32);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.show {
  display: flex;
}
.modal-overlay.fade {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.auth-card {
  position: relative;
  width: 100%;
  max-width: 336px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 8px 24px rgba(16, 20, 30, 0.1);
  padding: 30px 28px 26px;
  animation: menuIn 0.15s ease;
}
.auth-card-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.auth-card-close:hover {
  color: var(--ink);
  background: rgba(127, 127, 127, 0.12);
}
.auth-card-close svg {
  width: 13px;
  height: 13px;
}
.auth-card-brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: -0.02em;
  color: var(--muted);
  margin-bottom: 20px;
}
.auth-head {
  font-size: 17.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.auth-sub {
  margin: 4px 0 24px;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}
.auth-oauth {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.oauth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 36px;
  width: 100%;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition:
    background 0.12s ease,
    border-color 0.12s ease,
    color 0.12s ease;
}
.oauth-btn:hover {
  color: var(--ink);
  border-color: #c3c8d2;
  background: rgba(127, 127, 127, 0.06);
}
.oauth-btn:disabled {
  opacity: 0.6;
  cursor: default;
}
.oauth-btn svg {
  width: 14px;
  height: 14px;
  flex: none;
}
.auth-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0;
  color: var(--muted);
  font-size: 11px;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.auth-field-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.auth-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.auth-field input {
  height: 38px;
  width: 100%;
  padding: 0 12px;
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition:
    border-color 0.12s ease,
    background 0.12s ease,
    box-shadow 0.12s ease;
}
.auth-field input:hover {
  border-color: #c3c8d2;
}
.auth-field input:focus-visible {
  outline: none;
  border-color: var(--accent);
  background: var(--paper);
  box-shadow: 0 0 0 3px rgba(47, 87, 214, 0.14);
}
.auth-link {
  padding: 0;
  font-family: var(--font-ui);
  font-size: 11.5px;
  color: var(--muted);
  background: transparent;
  border: 0;
  cursor: pointer;
}
.auth-link:hover {
  color: var(--accent);
}
.auth-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 38px;
  margin-top: 2px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background 0.12s ease;
}
.auth-submit:hover {
  background: #000;
}
.auth-submit:disabled {
  opacity: 0.65;
  cursor: default;
}
.auth-submit .spinner {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  animation: btn-spin 0.6s linear infinite;
}
.auth-hint {
  margin: 0;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  font-size: 12px;
  line-height: 1.45;
}
.auth-hint:empty {
  display: none;
  padding: 0;
}
.auth-hint.error {
  color: #a4282c;
  background: rgba(199, 58, 58, 0.08);
}
.auth-hint.success {
  color: #1f6b3c;
  background: rgba(45, 138, 78, 0.09);
}
.auth-toggle {
  align-self: center;
  margin-top: 4px;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--muted);
  background: transparent;
  border: 0;
  cursor: pointer;
}
.auth-toggle:hover {
  color: var(--ink);
}

.confirm-card {
  width: 100%;
  max-width: 300px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
  padding: 20px 20px 16px;
  animation: menuIn 0.15s ease;
}
.confirm-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 5px;
}
.confirm-body {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 18px;
}
.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.confirm-btn {
  height: 30px;
  padding: 0 12px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
}
.confirm-btn:hover {
  background: rgba(127, 127, 127, 0.1);
}
.confirm-btn.danger {
  border-color: #c73a3a;
  background: #c73a3a;
  color: #fff;
}
.confirm-btn.danger:hover {
  background: #a4282c;
  border-color: #a4282c;
}
.confirm-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.documents-search-wrap {
  flex: none;
  width: 220px;
}
.documents-search-wrap .doc-search {
  height: 30px;
}
.doc-search {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 27px;
  padding: 0 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
}
.doc-search:focus-within {
  border-color: var(--accent);
}
.doc-search svg {
  width: 12px;
  height: 12px;
  color: var(--muted);
  flex: none;
}
.doc-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink);
}
.doc-search input::placeholder {
  color: var(--muted);
}

.documents-notice {
  flex: none;
  margin: 0 0 16px;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  font-size: 11.5px;
  line-height: 1.4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #a4282c;
  background: rgba(199, 58, 58, 0.08);
}
.documents-bulk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  padding: 0 12px;
  margin: 0 0 12px;
  background: rgba(47, 87, 214, 0.06);
  border: 1px solid rgba(47, 87, 214, 0.25);
  border-radius: var(--r-md);
  font-size: 12.5px;
  color: var(--ink);
}
.documents-bulk-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.documents-bulk-actions .confirm-btn {
  height: 26px;
  padding: 0 11px;
  font-size: 12px;
}
.doc-notice-dismiss {
  flex: none;
  background: transparent;
  border: 0;
  color: inherit;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 0;
  opacity: 0.7;
}
.doc-notice-dismiss:hover {
  opacity: 1;
}

.documents-page {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  background: var(--paper);
}
.documents-page-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 44px 32px 64px;
}
.documents-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}
.documents-head h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.documents-head p {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted);
}
.documents-head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.documents-table {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.documents-table-head,
.documents-row {
  display: grid;
  grid-template-columns: 20px 1fr 130px 80px 32px;
  align-items: center;
  gap: 12px;
  padding: 0 6px;
}
.documents-table-head {
  height: 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.documents-col-check {
  display: flex;
  align-items: center;
  justify-content: center;
}
.documents-col-check input {
  width: 14px;
  height: 14px;
  accent-color: var(--ink-soft);
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.12s ease;
}
.documents-row:hover .documents-col-check input,
.documents-col-check input:checked,
.documents-col-check input:hover {
  opacity: 1;
}
.documents-row {
  position: relative;
  height: 46px;
  border-top: 1px solid var(--line-soft);
  cursor: pointer;
  transition: background 0.1s ease;
}
.documents-table-head + .documents-row {
  border-top: 0;
}
.documents-row:hover {
  background: rgba(127, 127, 127, 0.055);
}
.documents-name {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.documents-name-title {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.documents-name-edit {
  height: 24px;
  width: 100%;
  max-width: 320px;
  padding: 0 6px;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 3px;
  outline: none;
}
.documents-col-modified,
.documents-col-size {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.documents-row-menu-wrap {
  position: relative;
  display: flex;
  justify-content: flex-end;
}
.documents-kebab {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  opacity: 0.45;
  transition:
    opacity 0.1s ease,
    background 0.1s ease,
    color 0.1s ease;
}
.documents-kebab svg {
  width: 15px;
  height: 15px;
  flex: none;
}
.documents-row:hover .documents-kebab,
.documents-row:focus-within .documents-kebab,
.documents-kebab.open {
  opacity: 1;
}
.documents-kebab:hover,
.documents-kebab.open {
  color: var(--ink);
  background: rgba(127, 127, 127, 0.14);
}
.documents-row-menu {
  position: fixed;
  z-index: 60;
  width: 150px;
  padding: 4px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  animation: menuIn 0.12s ease;
}
.documents-row-menu button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 8px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-align: left;
}
.documents-row-menu button:hover {
  background: rgba(47, 87, 214, 0.07);
}
.documents-row-menu button.danger {
  color: #c73a3a;
}
.documents-row-menu button.danger:hover {
  background: rgba(199, 58, 58, 0.08);
}
.documents-row-menu button svg {
  width: 12px;
  height: 12px;
  flex: none;
  color: var(--muted);
}
.documents-row-menu button.danger svg {
  color: #c73a3a;
}

.documents-skeleton-row {
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  border-bottom: 1px solid var(--line-soft);
  gap: 10px;
}
.documents-skeleton-row:last-child {
  border-bottom: 0;
}
.documents-skeleton-row .sk {
  background: var(--line-soft);
  border-radius: 3px;
  animation: sk-pulse 1.1s ease-in-out infinite;
}
.documents-skeleton-row .sk.title {
  height: 10px;
  width: 38%;
}

.documents-empty,
.documents-signedout {
  padding: 64px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  border-top: 1px solid var(--line);
}
.documents-empty h2,
.documents-signedout h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.documents-empty p,
.documents-signedout p {
  margin: 0 0 6px;
  font-size: 12.5px;
  color: var(--muted);
  max-width: 340px;
  line-height: 1.5;
}
.documents-empty-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 14px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.documents-empty-btn:hover {
  background: #000;
}
.documents-empty-btn svg {
  width: 12px;
  height: 12px;
}

.save-dialog-card .auth-field {
  margin-top: 4px;
}
.save-dialog-card #saveDialogName {
  height: 36px;
  width: 100%;
  padding: 0 11px;
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition:
    border-color 0.12s ease,
    background 0.12s ease,
    box-shadow 0.12s ease;
}
.save-dialog-card #saveDialogName:focus-visible {
  outline: none;
  border-color: var(--accent);
  background: var(--paper);
  box-shadow: 0 0 0 3px rgba(47, 87, 214, 0.14);
}
.confirm-btn.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}
.confirm-btn.primary:hover {
  background: #000;
  border-color: #000;
}

.editor {
  position: relative;
  flex: 1;
  min-height: 0;
  background: var(--surface);
  box-shadow: inset 0 0 0 0 var(--accent);
  transition: box-shadow 0.12s ease;
}
.editor:focus-within {
  box-shadow: inset 2px 0 0 0 var(--accent);
}
.editor.doc-switching {
  opacity: 0.55;
  transition: opacity 0.1s ease 0.08s;
}
.editor pre,
.editor textarea {
  margin: 0;
  border: 0;
  padding: 20px 22px;
  font-family: var(--font-editor);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: normal;
  word-spacing: normal;
  font-variant-ligatures: none;
  font-kerning: none;
  text-rendering: geometricPrecision;
  tab-size: 2;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
}
.editor pre {
  position: absolute;
  inset: 0;
  overflow: auto;
  pointer-events: none;
  color: var(--ink);
  z-index: 0;
  scrollbar-gutter: stable;
  scrollbar-width: none;
}
.editor pre::-webkit-scrollbar {
  display: none;
}
.editor textarea {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  resize: none;
  outline: none;
  scrollbar-gutter: stable;
  background: transparent;
  color: transparent;
  caret-color: var(--accent);
  z-index: 1;
}
.editor textarea::selection {
  background: rgba(127, 140, 200, 0.3);
}

.tok-head {
  color: var(--t-head);
}
.tok-strong {
  color: var(--t-strong);
}
.tok-em {
  color: var(--t-em);
}
.tok-code {
  color: var(--t-code);
}
.tok-fence {
  color: var(--t-fence);
}
.tok-link {
  color: var(--t-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.tok-url {
  color: var(--t-url);
}
.tok-math {
  color: var(--t-math);
}
.tok-quote {
  color: var(--t-quote);
}
.tok-list {
  color: var(--t-list);
}
.tok-punct {
  color: var(--t-punct);
}
.tok-hr {
  color: var(--t-punct);
}

.pane.preview {
  background: var(--canvas);
}
.proof {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: auto;
  background: var(--canvas);
  padding: 14px 18px;
  min-width: 0;
  scrollbar-gutter: stable;
}
.proof .page {
  width: fit-content;
  margin: 0 auto 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  max-width: 100%;
}
.proof .page img {
  opacity: 0;
  transition: opacity 0.15s ease;
}
.proof .page img.loaded {
  opacity: 1;
}
.proof .empty {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 24px;
  pointer-events: none;
}
.proof .empty.show {
  display: flex;
}

.proof-continuous {
  position: relative;
  flex: 1;
  min-height: 0;
  background: var(--paper);
}
.proof-continuous iframe.continuous-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: var(--paper);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 0;
}
.proof-continuous iframe.continuous-frame.active {
  visibility: visible;
  opacity: 1;
  z-index: 1;
}
.proof-continuous .empty {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 24px;
  background: var(--canvas);
  pointer-events: none;
}
.proof-continuous .empty.show {
  display: flex;
}
.empty-icon {
  width: 30px;
  height: 30px;
  color: var(--muted);
  opacity: 0.5;
}
.empty-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.empty-title {
  font-weight: 500;
  color: var(--ink-soft);
}
.empty-sub {
  color: var(--muted);
  font-size: 12px;
}
.empty-sub:empty {
  display: none;
}

* {
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 0, 0, 0.22) transparent;
}
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0.18);
  border-radius: 20px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
  background-color: rgba(0, 0, 0, 0.28);
  background-clip: content-box;
}

@media (max-width: 1000px) {
  .toolbar {
    gap: 8px;
  }
  .doc-name input {
    width: 70px;
  }
}
@media (max-width: 820px) {
  body {
    overflow: auto;
  }
  main {
    grid-template-columns: 1fr;
  }
  .pane.source {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .pane {
    min-height: 64vh;
  }
  .doc-name,
  .divider,
  .doc-title-label {
    display: none;
  }
  .cloud-btn-label {
    display: none;
  }
  .documents-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .documents-table-head,
  .documents-row {
    grid-template-columns: 22px 1fr 90px;
  }
  .documents-col-size {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
  .btn-icon .spinner {
    animation: none;
  }
}