.editor-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
}

.editor-header-wrapper {
  position: fixed;
  top: 16px;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 100;
  padding: 0 16px;
  pointer-events: none;
}

.topbar-left,
.editor-toolbar-center,
.topbar-actions {
  pointer-events: auto;
}

.editor-topbar {
  width: 100%;
  max-width: 1100px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 8px 6px 16px;
  pointer-events: auto;
}

.topbar-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.editor-toolbar-center {
  flex: 1;
  max-width: 200px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius-full);
}

.editor-toolbar-center:hover,
.editor-toolbar-center:focus {
  background: var(--surface-sunken);
}

.doc-title-input {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  outline: none;
  width: 100%;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  text-align: center;
  -webkit-mask-image: linear-gradient(to right,
      transparent 0%,
      black 10%,
      black 90%,
      transparent 100%);
  mask-image: linear-gradient(to right,
      transparent 0%,
      black 10%,
      black 90%,
      transparent 100%);
  transition: background 0.2s, width 0.2s;
}

.doc-title-input:hover {
  background: var(--surface-sunken);
}

.doc-title-input:focus {
  background: var(--surface);
  border-color: var(--border-strong);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.doc-title-input::placeholder {
  color: var(--text-tertiary);
  font-weight: 600;
}

.autosave-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
}

.autosave-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
  transition: background 0.2s;
}

.autosave-indicator.is-saving .autosave-dot {
  background: var(--accent);
  animation: pulse-dot 1s ease-out infinite;
}

.autosave-indicator.is-saved .autosave-dot {
  background: var(--success);
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.35;
  }
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.format-bar-floating {
  position: fixed;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 80;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 4px;
  padding: 6px;
  background: color-mix(in srgb, var(--surface) 30%, transparent);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: var(--radius-xl);
  max-width: calc(100vw - 32px);
}

.format-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s;
}

.format-btn:hover {
  background: var(--surface-sunken);
  color: var(--text-primary);
}

.format-btn svg {
  width: 18px;
  height: 18px;
}

.format-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 8px;
  flex-shrink: 0;
}

.editor-panes {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 0;
}

.editor-panes[data-mode="editor"] {
  grid-template-columns: 1fr;
}

.editor-panes[data-mode="editor"] .pane-preview {
  display: none;
}

.editor-panes[data-mode="preview"] {
  grid-template-columns: 1fr;
}

.editor-panes[data-mode="preview"] .pane-editor {
  display: none;
}

.pane {
  height: 100%;
}

.pane-editor {
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.editor-panes[data-mode="editor"] .pane-editor,
.editor-panes[data-mode="preview"] .pane-editor {
  border-right: none;
}

.pane-inner {
  padding: 0px 25px;
  max-width: 800px;
  margin: 0 auto;
  height: 100%;
}

.textarea-plain {
  width: 100%;
  min-height: 100%;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  outline: none;
  padding-top: 100px;
  padding-bottom: 200px;
  -webkit-mask-image: linear-gradient(to bottom,
      transparent 0%,
      black 5%,
      black 95%,
      transparent 100%);

  mask-image: linear-gradient(to bottom,
      transparent 0%,
      black 5%,
      black 95%,
      transparent 100%);
}

.textarea-plain::placeholder {
  color: var(--text-tertiary);
  font-family: var(--font-body);
  font-weight: 500;
}

.editor-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  z-index: 70;
  pointer-events: none;
  display: flex;
  justify-content: flex-end;
}

.editor-footer-stats {
  display: flex;
  gap: 16px;
  padding: 4px 12px;
  background: color-mix(in srgb, var(--surface) 30%, transparent);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: var(--radius-full);
  pointer-events: auto;
}

body.is-fullscreen .editor-header-wrapper,
body.is-fullscreen .editor-footer {
  display: none;
}

body.is-fullscreen .editor-shell {
  padding-top: 0;
}

.markdown-preview {
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 17px;
  padding-top: 100px;
  padding-bottom: 200px;
  height: 100%;
  -webkit-mask-image: linear-gradient(to bottom,
      transparent 0%,
      black 3%,
      black 98%,
      transparent 100%);

  mask-image: linear-gradient(to bottom,
      transparent 0%,
      black 3%,
      black 97%,
      transparent 100%);
}

.markdown-preview h1 {
  font-size: 40px;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.markdown-preview h2 {
  font-size: 28px;
  margin-top: 40px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.markdown-preview h3 {
  font-size: 22px;
  margin-top: 32px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.markdown-preview p {
  margin-bottom: 20px;
}

.markdown-preview ul,
.markdown-preview ol {
  margin: 0 0 20px 24px;
}

.markdown-preview ul {
  list-style: disc;
}

.markdown-preview ol {
  list-style: decimal;
}

.markdown-preview li {
  margin-bottom: 8px;
}

.markdown-preview li.task-item {
  list-style: none;
  margin-left: -24px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.markdown-preview li.task-item input {
  margin-top: 5px;
  background-color: var(--bg-primary);
  height: 16px;
  width: 16px;
}

.markdown-preview a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--border-strong);
  transition: text-decoration-color 0.2s;
}

.markdown-preview a:hover {
  text-decoration-color: var(--text-primary);
}

.markdown-preview blockquote {
  border-left: 3px solid var(--text-primary);
  padding-left: 10px;
  margin: 10px 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.markdown-preview code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--code-bg);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.markdown-preview pre {
  background: var(--code-bg);
  border-radius: var(--radius-md);
  padding: 12px;
  overflow-x: auto;
  margin: 32px 0;
}

.markdown-preview pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
}

.markdown-preview img {
  margin: 40px 0;
}

.markdown-preview hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

.markdown-preview table {
  width: 100%;
  margin: 32px 0;
  font-size: 15px;
  display: block;
  overflow-x: auto;
}

.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
  border-radius: var(--radius-md);
}

.markdown-preview th {
  background: var(--surface-sunken);
  font-weight: 600;
}

.markdown-preview:empty::before {
  content: "Preview will appear here";
  color: var(--text-tertiary);
  font-weight: 500;
}

.doc-desc-inline-input {
  width: 100%;
  padding: 10px 0;
  margin-top: 100px;
  font-size: 16px;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border);
  outline: none;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s;
}

.doc-desc-inline-input:focus {
  border-bottom-color: var(--text-primary);
  color: var(--text-primary);
}

.doc-desc-inline-input::placeholder {
  color: var(--text-tertiary);
}

.preview-desc-inline {
  font-size: 18px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-top: 100px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  display: none;
  font-style: italic;
}

.code-block-wrapper {
  margin: 28px 0;
  background: var(--code-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
}

.code-lang-tag {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.btn-copy-code {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  transition: all 0.2s ease;
}

.btn-copy-code:hover {
  color: var(--text-primary);
}

.markdown-preview pre {
  margin: 0 !important;
  padding: 16px !important;
  background: transparent !important;
  border-radius: 0 !important;
}

.admonition {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--surface-sunken);
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-radius: var(--radius-md);
}

.admonition-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.admonition-note {
  border-left-color: #3b82f6;
  background: rgba(59, 130, 246, 0.07);
  color: #2563eb;
}

.admonition-tip {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.07);
  color: #059669;
}

.admonition-warning {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.07);
  color: #d97706;
}

.admonition-danger {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.07);
  color: #dc2626;
}

.admonition-info {
  border-left-color: #6366f1;
  background: rgba(99, 102, 241, 0.07);
  color: #4f46e5;
}

.admonition-content p {
  color: var(--text-primary);
  font-size: 15px;
  margin: 0 !important;
}

.task-item-content {
  flex: 1;
}

.task-checkbox-label {
  display: inline-flex;
  align-items: center;
  cursor: default;
  margin-top: 4px;
}

mark {
  background: #fef08a;
  color: #854d0e;
  padding: 2px 6px;
  border-radius: 4px;
}

kbd {
  display: inline-block;
  padding: 3px 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  color: var(--text-primary);
  background: var(--surface-sunken);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  box-shadow: 0 2px 0 var(--border-strong);
}

.md-image-wrapper {
  margin: 32px 0;
  text-align: center;
}

.md-image-wrapper img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin: 0 auto;
}

.md-image-wrapper figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-tertiary);
  font-style: italic;
}

.md-footnote {
  color: var(--accent);
  font-weight: 700;
  cursor: help;
  padding: 0 2px;
}