/*
  assets/style.css — UI and preview styles for Markdown Studio
  Copyright (c) 2026 MOUSDIK ISMAIL
  Licensed under the MIT License (see ../LICENSE)
*/

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --bg0: #fff;
  --bg1: #f8f7f4;
  --bg2: #f0ede8;
  --bg3: #e6e3dc;
  --fg0: #1a1916;
  --fg1: #3d3b36;
  --fg2: #6b6860;
  --fg3: #9c9a94;
  --acc: #2563eb;
  --acc2: #1d4ed8;
  --acc-bg: #eff6ff;
  --err: #dc2626;
  --suc: #16a34a;
  --warn: #d97706;
  --border: #d6d3cc;
  --border2: #c4c1ba;
  --rad: 8px;
  --rad2: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow2: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  --font-ui: "DM Sans", sans-serif;
  --font-mono: "DM Mono", monospace;
}
[data-theme="dark"] {
  --bg0: #161512;
  --bg1: #1e1d1a;
  --bg2: #252420;
  --bg3: #2e2d28;
  --fg0: #f0ede6;
  --fg1: #d4d0c8;
  --fg2: #9c9890;
  --fg3: #6b6860;
  --acc: #60a5fa;
  --acc2: #93c5fd;
  --acc-bg: #1e3a5f;
  --border: #35342f;
  --border2: #46443d;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow2: 0 8px 32px rgba(0, 0, 0, 0.5);
}
html,
body {
  height: 100%;
  overflow: hidden;
}
body {
  font-family: var(--font-ui);
  background: var(--bg1);
  color: var(--fg0);
  display: flex;
  flex-direction: column;
  font-size: 14px;
}
#vue-root {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  min-height: 0;
}
button {
  font-family: var(--font-ui);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
input,
select,
textarea {
  font-family: var(--font-ui);
  color: inherit;
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 6px 10px;
  font-size: 13px;
  outline: none;
  width: 100%;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--acc);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--acc) 20%, transparent);
}
select {
  cursor: pointer;
}
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border2);
  border-radius: 99px;
}
#topbar {
  height: 46px;
  min-height: 46px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  background: var(--bg0);
  border-bottom: 1px solid var(--border);
  z-index: 200;
  overflow: hidden;
}
.logo {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-right: 6px;
  flex-shrink: 0;
}
.logo-mark {
  width: 24px;
  height: 24px;
  background: var(--acc);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-mark i {
  font-size: 14px;
  color: #fff;
}
.logo-text {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.4px;
}
.tb-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 3px;
  flex-shrink: 0;
}
.tb-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg1);
  transition:
    background 0.15s,
    color 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}
.tb-btn:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.tb-btn.active {
  background: var(--acc-bg);
  color: var(--acc);
}
.tb-btn.unsaved-indicator {
  background: #fef3c7;
  color: #92400e;
}
.tb-btn i {
  font-size: 14px;
}
.tb-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  color: var(--fg2);
  transition:
    background 0.1s,
    color 0.1s;
  flex-shrink: 0;
}
.tb-icon:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.tb-icon.active {
  background: var(--acc-bg);
  color: var(--acc);
}
.tb-icon i {
  font-size: 16px;
}
.tb-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}
.tb-theme-sel {
  padding: 4px 26px 4px 8px;
  font-size: 12px;
  border-radius: 6px;
  appearance: none;
  cursor: pointer;
  width: 150px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%236b6860' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
}
.fname-badge {
  font-size: 12px;
  color: var(--fg2);
  padding: 3px 8px;
  background: var(--bg2);
  border-radius: 6px;
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: text;
  flex-shrink: 0;
}
.fname-badge:hover {
  background: var(--bg3);
}
.rename-input {
  background: transparent;
  border: 1px solid var(--acc);
  border-radius: 4px;
  padding: 2px 5px;
  font-size: 12px;
  width: 120px;
  outline: none;
  flex-shrink: 0;
}
#app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}
#sidebar {
  width: 210px;
  min-width: 210px;
  flex-shrink: 0;
  background: var(--bg0);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition:
    width 0.2s,
    min-width 0.2s;
}
#sidebar.collapsed {
  width: 0;
  min-width: 0;
}
#main {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-width: 0;
}
#editor-pane {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 180px;
  flex: 1;
}
#editor-pane.hidden {
  display: none;
}
#editor-wrap {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}
#editor-textarea {
  flex: 1;
  width: 100%;
  resize: none;
  border: none;
  outline: none;
  background: var(--bg0);
  color: var(--fg0);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  padding: 18px 22px;
  tab-size: 2;
  caret-color: var(--acc);
  overflow-y: auto;
  overflow-x: auto;
  display: block;
  box-sizing: border-box;
}
#editor-textarea::selection {
  background: color-mix(in srgb, var(--acc) 22%, transparent);
}
#preview-pane {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 180px;
  flex: 1;
  border-left: 1px solid var(--border);
}
#preview-pane.hidden {
  display: none;
}
#preview-scroller {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
}
#preview-page {
  max-width: 740px;
  margin: 0 auto;
  padding: 40px 48px 80px;
  background: var(--bg0);
  min-height: 100%;
  box-sizing: border-box;
  word-break: break-word;
}
#resizer {
  width: 4px;
  flex-shrink: 0;
  background: var(--border);
  cursor: col-resize;
  transition: background 0.15s;
  user-select: none;
}
#resizer:hover,
#resizer.dragging {
  background: var(--acc);
}
.pane-toolbar {
  height: 36px;
  min-height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 8px;
  background: var(--bg0);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.pane-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg3);
  margin-right: 3px;
  flex-shrink: 0;
}
.tool-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 5px;
  color: var(--fg2);
  transition:
    background 0.1s,
    color 0.1s;
  font-size: 14px;
  flex-shrink: 0;
}
.tool-btn:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.tool-btn.active {
  background: var(--acc-bg);
  color: var(--acc);
}
.tool-sep {
  width: 1px;
  height: 14px;
  background: var(--border);
  margin: 0 2px;
  flex-shrink: 0;
}
.sb-section {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.sb-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg3);
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sb-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}
.file-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 7px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  color: var(--fg1);
  transition: background 0.1s;
  position: relative;
}
.file-item:hover {
  background: var(--bg2);
}
.file-item.active {
  background: var(--acc-bg);
  color: var(--acc);
}
.file-item i {
  font-size: 13px;
  flex-shrink: 0;
}
.file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-del {
  opacity: 0;
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 11px;
  transition: opacity 0.1s;
  color: var(--fg3);
}
.file-item:hover .file-del {
  opacity: 1;
}
.file-del:hover {
  background: var(--bg3);
  color: var(--err);
}
.sb-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 7px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--fg1);
  transition: background 0.15s;
  text-align: left;
}
.sb-btn:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.sb-btn i {
  font-size: 13px;
  flex-shrink: 0;
}
.outline-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 5px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 11px;
  color: var(--fg2);
  transition: background 0.1s;
  white-space: nowrap;
  overflow: hidden;
}
.outline-item:hover {
  background: var(--bg2);
  color: var(--fg0);
}
#statusbar {
  height: 22px;
  min-height: 22px;
  flex-shrink: 0;
  background: var(--bg0);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 14px;
  font-size: 10px;
  color: var(--fg3);
  overflow: hidden;
}
.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 3px;
  vertical-align: middle;
}
.md-body {
  line-height: 1.7;
  word-break: break-word;
}
.md-body h1,
.md-body h2,
.md-body h3,
.md-body h4,
.md-body h5,
.md-body h6 {
  margin: 1.4em 0 0.45em;
  font-weight: 600;
  line-height: 1.3;
}
.md-body h1 {
  font-size: 2em;
}
.md-body h2 {
  font-size: 1.5em;
}
.md-body h3 {
  font-size: 1.25em;
}
.md-body h4 {
  font-size: 1.1em;
}
.md-body p {
  margin: 0.7em 0;
}
.md-body a {
  color: var(--acc);
  text-decoration: none;
}
.md-body a:hover {
  text-decoration: underline;
}
.md-body ul,
.md-body ol {
  padding-left: 1.5em;
  margin: 0.5em 0;
}
.md-body li {
  margin: 0.15em 0;
}
.md-body blockquote {
  margin: 0.7em 0;
  padding: 0.4em 1em;
  border-left: 3px solid var(--border2);
  color: var(--fg2);
  font-style: italic;
}
.md-body code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--bg2);
  padding: 1px 5px;
  border-radius: 4px;
  word-break: break-all;
}
.md-body pre {
  background: var(--bg2);
  padding: 0.9em 1em;
  border-radius: var(--rad);
  overflow-x: auto;
  margin: 0.7em 0;
}
.md-body pre code {
  background: none;
  padding: 0;
  font-size: 0.84em;
  line-height: 1.6;
  word-break: normal;
}
.md-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.7em 0;
  font-size: 0.93em;
  display: block;
  overflow-x: auto;
}
.md-body th,
.md-body td {
  padding: 0.42em 0.68em;
  border: 1px solid var(--border);
}
.md-body th {
  background: var(--bg2);
  font-weight: 600;
}
.md-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.4em 0;
}
.md-body img {
  max-width: 100%;
  border-radius: var(--rad);
  display: block;
  margin: 0.7em auto;
}
.md-body figure {
  margin: 0.7em 0;
  text-align: center;
}
.md-body figcaption {
  font-size: 0.8em;
  color: var(--fg2);
  margin-top: 0.25em;
}
.mermaid-block {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 12px;
  margin: 0.7em 0;
  text-align: center;
  overflow-x: auto;
}
.mermaid-block svg {
  max-width: 100%;
  height: auto;
}
.mermaid-error {
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: var(--rad);
  padding: 10px 14px;
  margin: 0.7em 0;
  font-size: 12px;
  color: #991b1b;
  font-family: var(--font-mono);
}
.katex-block {
  overflow-x: auto;
  text-align: center;
  padding: 0.5em 0;
  margin: 0.7em 0;
}
.katex-inline {
  display: inline;
}
.katex-error {
  color: var(--err);
  font-size: 0.85em;
  font-family: var(--font-mono);
}
.theme-default {
  font-family: "DM Sans", sans-serif;
  font-size: 16px;
}
.theme-default h1 {
  font-size: 2em;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.theme-default h2 {
  font-size: 1.4em;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35em;
}
.theme-default blockquote {
  border-left-color: var(--acc);
}
.theme-research {
  font-family: "Crimson Pro", serif;
  font-size: 17px;
}
.theme-research h1 {
  font-size: 1.85em;
  font-weight: 600;
  text-align: center;
}
.theme-research h2 {
  font-size: 1.28em;
  font-weight: 600;
  font-variant: small-caps;
  border-bottom: 2px solid currentColor;
  padding-bottom: 0.2em;
  letter-spacing: 0.05em;
}
.theme-research h3 {
  font-size: 1.1em;
  font-weight: 600;
  font-style: italic;
}
.theme-research p {
  text-indent: 1.5em;
  text-align: justify;
  hyphens: auto;
}
.theme-research h1 + p,
.theme-research h2 + p,
.theme-research h3 + p {
  text-indent: 0;
}
.theme-research blockquote {
  border-left: 2px solid #888;
  font-style: italic;
}
#preview-page.theme-research {
  max-width: 680px;
  padding: 48px 60px 80px;
}
.theme-scientific {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 15px;
}
.theme-scientific h1 {
  font-size: 1.65em;
  font-weight: 600;
  color: var(--acc);
  border-bottom: 3px solid var(--acc);
  padding-bottom: 0.35em;
}
.theme-scientific h2 {
  font-size: 1.2em;
  font-weight: 600;
  background: var(--bg2);
  padding: 0.28em 0.55em;
  border-radius: 4px;
  margin-top: 1.7em;
}
.theme-scientific h3 {
  font-size: 1.08em;
  font-weight: 600;
  color: var(--acc);
}
.theme-scientific table th {
  background: var(--acc);
  color: #fff;
}
.theme-scientific blockquote {
  background: var(--acc-bg);
  border-left: 4px solid var(--acc);
  border-radius: 0 var(--rad) var(--rad) 0;
  font-style: normal;
}
.theme-cv {
  font-family: "Raleway", sans-serif;
  font-size: 14px;
}
.theme-cv h1 {
  font-size: 2.3em;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  border-bottom: 3px solid var(--fg0);
  padding-bottom: 0.2em;
}
.theme-cv h2 {
  font-size: 0.78em;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg2);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.18em;
  margin-top: 1.5em;
  margin-bottom: 0.45em;
}
.theme-cv h3 {
  font-size: 1.02em;
  font-weight: 600;
  margin-bottom: 0;
}
.theme-cv h4 {
  font-size: 0.88em;
  font-weight: 400;
  font-style: italic;
  color: var(--fg2);
}
.theme-cv ul {
  list-style: none;
  padding-left: 0;
}
.theme-cv ul li::before {
  content: "—";
  margin-right: 0.45em;
  color: var(--fg3);
}
.theme-cv blockquote {
  border: none;
  font-size: 1.04em;
  color: var(--fg1);
  padding: 0;
  margin: 0.25em 0;
}
#preview-page.theme-cv {
  max-width: 720px;
  padding: 48px 56px 80px;
}
.theme-latex {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
}
.theme-latex h1 {
  font-size: 1.65em;
  font-weight: 700;
  text-align: center;
  font-variant: small-caps;
  letter-spacing: 0.04em;
}
.theme-latex h2 {
  font-size: 1.28em;
  font-weight: 700;
  margin-top: 1.8em;
}
.theme-latex h3 {
  font-size: 1.08em;
  font-weight: 700;
  font-style: italic;
  margin-top: 1.2em;
}
.theme-latex p {
  text-indent: 1.5em;
  text-align: justify;
  margin: 0.3em 0;
  hyphens: auto;
}
.theme-latex h1 + p,
.theme-latex h2 + p,
.theme-latex h3 + p {
  text-indent: 0;
}
.theme-latex blockquote {
  margin: 1em 2em;
  border: none;
  font-style: italic;
  font-size: 0.93em;
  color: var(--fg2);
}
.theme-latex pre {
  background: none;
  border: 1px solid var(--border);
}
.theme-latex code {
  font-family: "Space Mono", monospace;
  font-size: 0.8em;
  background: none;
}
.theme-latex hr {
  border: none;
  text-align: center;
  margin: 1.5em 0;
}
.theme-latex hr::after {
  content: "* * *";
  color: var(--fg3);
  letter-spacing: 0.4em;
}
#preview-page.theme-latex {
  max-width: 680px;
  padding: 72px 80px 96px;
  font-size: 15px;
}
.theme-editorial {
  font-family: "Source Serif 4", serif;
  font-size: 17px;
}
.theme-editorial h1 {
  font-family: "Playfair Display", serif;
  font-size: 2.9em;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.3em;
}
.theme-editorial h2 {
  font-family: "Playfair Display", serif;
  font-size: 1.55em;
  font-weight: 700;
  font-style: italic;
  border: none;
}
.theme-editorial h3 {
  font-family: "DM Sans", sans-serif;
  font-size: 0.78em;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg2);
}
.theme-editorial blockquote {
  font-family: "Playfair Display", serif;
  font-size: 1.35em;
  font-style: italic;
  border: none;
  text-align: center;
  padding: 1em 2em;
  line-height: 1.4;
}
.theme-editorial blockquote::before {
  content: "\201C";
  font-size: 3em;
  line-height: 0;
  vertical-align: -0.6em;
  color: var(--fg3);
  margin-right: 0.1em;
}
#preview-page.theme-editorial {
  max-width: 720px;
  padding: 56px 60px 80px;
}
.theme-technical {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14.5px;
}
.theme-technical h1 {
  font-size: 1.75em;
  font-weight: 600;
  padding-bottom: 0.45em;
  border-bottom: 2px solid var(--border);
}
.theme-technical h2 {
  font-size: 1.28em;
  font-weight: 600;
  margin-top: 1.9em;
  padding: 0.18em 0;
  border-bottom: 1px solid var(--border);
}
.theme-technical h3 {
  font-size: 1.08em;
  font-weight: 600;
  color: var(--fg1);
}
.theme-technical code {
  background: var(--bg2);
  color: var(--acc);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.83em;
}
.theme-technical pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
}
.theme-technical blockquote {
  background: var(--bg2);
  border-left: 3px solid var(--warn);
  border-radius: 0 var(--rad) var(--rad) 0;
}
.theme-minimal {
  font-family: "DM Sans", sans-serif;
  font-size: 16px;
}
.theme-minimal h1 {
  font-size: 1.75em;
  font-weight: 300;
  letter-spacing: -0.04em;
}
.theme-minimal h2 {
  font-size: 1.18em;
  font-weight: 400;
  color: var(--fg2);
  margin-top: 1.9em;
  border: none;
}
.theme-minimal h3 {
  font-size: 1em;
  font-weight: 500;
  color: var(--fg1);
}
.theme-minimal blockquote {
  border-left-color: var(--fg3);
  color: var(--fg2);
}
#preview-page.theme-minimal {
  max-width: 640px;
}
.theme-ieee {
  font-family: "Times New Roman", Times, serif;
  font-size: 15px;
  column-count: 2;
  column-gap: 2.5em;
}
.theme-ieee h1 {
  font-size: 1.5em;
  font-weight: 700;
  text-align: center;
  column-span: all;
  font-variant: small-caps;
  letter-spacing: 0.03em;
  margin-bottom: 0.3em;
}
.theme-ieee h2 {
  font-size: 1em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 1.2em 0 0.4em;
}
.theme-ieee h3 {
  font-size: 1em;
  font-weight: 700;
  font-style: italic;
  margin: 0.8em 0 0.3em;
}
.theme-ieee p {
  text-indent: 1em;
  text-align: justify;
  hyphens: auto;
  margin: 0.25em 0;
}
.theme-ieee pre,
.theme-ieee table,
.theme-ieee figure,
.theme-ieee .mermaid-block,
.theme-ieee .katex-block {
  column-span: all;
}
#preview-page.theme-ieee {
  max-width: 900px;
  padding: 32px 40px 60px;
}
.theme-hbs {
  font-family: "Garamond", "Palatino Linotype", Palatino, serif;
  font-size: 16px;
}
.theme-hbs h1 {
  font-size: 1.8em;
  font-weight: 700;
  color: #8b1a1a;
  border-bottom: 2px solid #8b1a1a;
  padding-bottom: 0.3em;
  letter-spacing: -0.01em;
}
.theme-hbs h2 {
  font-size: 1.25em;
  font-weight: 700;
  color: #8b1a1a;
  margin-top: 1.6em;
  border-bottom: 1px solid #c9a0a0;
  padding-bottom: 0.2em;
}
.theme-hbs h3 {
  font-size: 1.05em;
  font-weight: 700;
  color: #5a1010;
  margin-top: 1.2em;
}
.theme-hbs p {
  text-align: justify;
  hyphens: auto;
}
.theme-hbs blockquote {
  border-left: 3px solid #8b1a1a;
  padding: 0.4em 1em;
  background: #fdf5f5;
  color: var(--fg1);
  font-style: italic;
}
.theme-hbs table th {
  background: #8b1a1a;
  color: #fff;
}
.theme-hbs code {
  background: #fdf5f5;
  color: #8b1a1a;
}
#preview-page.theme-hbs {
  max-width: 720px;
  padding: 48px 56px 80px;
}
.theme-legal {
  font-family: "Garamond", "Times New Roman", serif;
  font-size: 16px;
}
.theme-legal h1 {
  font-size: 1.6em;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--fg0);
  padding-bottom: 0.3em;
}
.theme-legal h2 {
  font-size: 1em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 1.6em 0 0.4em;
}
.theme-legal p {
  text-align: justify;
  hyphens: auto;
  line-height: 1.9;
}
#preview-page.theme-legal {
  max-width: 700px;
  padding: 64px 72px 80px;
  line-height: 1.9;
}
.theme-medical {
  font-family: "Arial", Helvetica, sans-serif;
  font-size: 14px;
}
.theme-medical h1 {
  font-size: 1.6em;
  font-weight: 700;
  color: #0d6b3e;
  border-bottom: 3px solid #0d6b3e;
  padding-bottom: 0.3em;
}
.theme-medical h2 {
  font-size: 1.2em;
  font-weight: 700;
  color: #0d6b3e;
  background: #e8f5e9;
  padding: 0.28em 0.6em;
  border-radius: 4px;
  margin-top: 1.5em;
}
.theme-medical h3 {
  font-size: 1.05em;
  font-weight: 700;
  color: #1b5e20;
}
.theme-medical blockquote {
  background: #e8f5e9;
  border-left: 4px solid #0d6b3e;
  border-radius: 0 var(--rad) var(--rad) 0;
  padding: 0.4em 0.9em;
  font-style: normal;
  color: var(--fg0);
}
.theme-medical table th {
  background: #0d6b3e;
  color: #fff;
}
.theme-startup {
  font-family: "DM Sans", sans-serif;
  font-size: 16px;
}
.theme-startup h1 {
  font-size: 2.4em;
  font-weight: 800;
  background: linear-gradient(90deg, #818cf8, #c084fc, #fb7185);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.04em;
}
.theme-startup h2 {
  font-size: 1.4em;
  font-weight: 700;
  color: #818cf8;
  border-bottom: 1px solid #312e81;
  padding-bottom: 0.3em;
  margin-top: 1.8em;
}
.theme-startup h3 {
  font-size: 1.1em;
  font-weight: 700;
  color: #c084fc;
}
.theme-startup blockquote {
  border-left: 3px solid #818cf8;
  background: rgba(129, 140, 248, 0.1);
  padding: 0.5em 1em;
  font-style: normal;
  border-radius: 0 var(--rad) var(--rad) 0;
}
#preview-page.theme-startup {
  max-width: 760px;
  padding: 48px 56px 80px;
  background: linear-gradient(135deg, #0f172a, #1e1b4b);
  color: #e2e8f0;
}
.theme-book {
  font-family: "Libre Baskerville", "Georgia", serif;
  font-size: 17px;
}
.theme-book h1 {
  font-size: 2em;
  font-weight: 700;
  text-align: center;
  font-style: italic;
  letter-spacing: 0.02em;
  margin: 1em 0 0.3em;
}
.theme-book h2 {
  font-size: 1.3em;
  font-weight: 400;
  text-align: center;
  font-style: italic;
  border: none;
  margin: 2em 0 0.5em;
}
.theme-book p {
  text-indent: 1.8em;
  text-align: justify;
  hyphens: auto;
  margin: 0.2em 0;
  line-height: 1.85;
}
.theme-book h1 + p,
.theme-book h2 + p,
.theme-book h3 + p {
  text-indent: 0;
}
.theme-book blockquote {
  border: none;
  font-style: italic;
  margin: 1em 3em;
  color: var(--fg1);
}
.theme-book hr {
  border: none;
  text-align: center;
  margin: 2em 0;
}
.theme-book hr::after {
  content: "\10080A";
  font-size: 1.4em;
  color: var(--fg3);
}
#preview-page.theme-book {
  max-width: 640px;
  padding: 64px 72px 96px;
  font-size: 17px;
  line-height: 1.85;
}
.theme-newspaper {
  font-family: "Libre Baskerville", "Georgia", serif;
  font-size: 15px;
  column-count: 3;
  column-gap: 1.8em;
  column-rule: 1px solid var(--border);
}
.theme-newspaper h1 {
  font-size: 2.2em;
  font-weight: 900;
  column-span: all;
  text-align: center;
  border-top: 3px solid var(--fg0);
  border-bottom: 3px solid var(--fg0);
  padding: 0.3em 0;
  margin: 0.3em 0;
}
.theme-newspaper h2 {
  font-size: 1.1em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.15em;
  margin: 1em 0 0.4em;
}
.theme-newspaper p {
  text-align: justify;
  hyphens: auto;
  font-size: 0.92em;
  line-height: 1.6;
  margin: 0.3em 0;
}
.theme-newspaper pre,
.theme-newspaper table,
.theme-newspaper figure,
.theme-newspaper .mermaid-block,
.theme-newspaper .katex-block {
  column-span: all;
}
#preview-page.theme-newspaper {
  max-width: 1000px;
  padding: 28px 36px 60px;
}
.style-panel {
  width: 230px;
  min-width: 230px;
  flex-shrink: 0;
  border-left: 1px solid var(--border);
  background: var(--bg0);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.style-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}
.sp-section {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.sp-section:last-child {
  border-bottom: none;
}
.sp-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg3);
  margin-bottom: 7px;
}
.slider-row {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 5px;
  font-size: 11px;
}
.slider-row label {
  width: 72px;
  color: var(--fg2);
  flex-shrink: 0;
}
.slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--acc);
}
.slider-row .val {
  min-width: 34px;
  text-align: right;
  font-size: 10px;
  color: var(--fg3);
}
.color-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 5px;
  font-size: 11px;
}
.color-row label {
  width: 72px;
  color: var(--fg2);
  flex-shrink: 0;
}
.color-row input[type="color"] {
  width: 28px;
  height: 22px;
  padding: 1px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--border);
}
.font-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 10px;
  cursor: pointer;
  margin: 2px;
  transition: all 0.1s;
  background: var(--bg0);
}
.font-chip:hover,
.font-chip.active {
  background: var(--acc);
  border-color: var(--acc);
  color: #fff;
}
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadein 0.15s ease;
}
@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.modal-box {
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--rad2);
  box-shadow: var(--shadow2);
  padding: 22px;
  width: 560px;
  max-width: 96vw;
  max-height: 88vh;
  overflow-y: auto;
  animation: slideup 0.2s ease;
}
@keyframes slideup {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
.modal-wide {
  width: 820px;
}
.modal-xl {
  width: 960px;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.modal-title {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 7px;
}
.modal-title i {
  font-size: 17px;
  color: var(--acc);
}
.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  color: var(--fg2);
  transition: background 0.1s;
}
.modal-close:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 13px;
  border-radius: var(--rad);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid var(--border);
  background: var(--bg0);
  color: var(--fg0);
}
.btn:hover {
  background: var(--bg2);
  border-color: var(--border2);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--acc);
  color: #fff;
  border-color: var(--acc);
}
.btn-primary:hover {
  background: var(--acc2);
  border-color: var(--acc2);
}
.btn-sm {
  padding: 4px 9px;
  font-size: 12px;
}
.btn i {
  font-size: 14px;
}
.form-group {
  margin-bottom: 13px;
}
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg2);
  margin-bottom: 4px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg0);
  padding: 0 8px;
  flex-shrink: 0;
}
.tab {
  padding: 7px 11px;
  font-size: 12px;
  color: var(--fg2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.1s;
  white-space: nowrap;
}
.tab:hover {
  color: var(--fg0);
}
.tab.active {
  color: var(--acc);
  border-bottom-color: var(--acc);
}
#ctx-menu {
  position: fixed;
  z-index: 2000;
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--rad2);
  box-shadow: var(--shadow2);
  padding: 4px;
  min-width: 195px;
  animation: ctxin 0.1s ease;
}
@keyframes ctxin {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
.ctx-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  color: var(--fg0);
  transition: background 0.1s;
  white-space: nowrap;
}
.ctx-item:hover {
  background: var(--bg2);
}
.ctx-item.danger:hover {
  background: #fee2e2;
  color: var(--err);
}
.ctx-item i {
  font-size: 14px;
  color: var(--fg2);
  width: 16px;
  flex-shrink: 0;
}
.ctx-item:hover i {
  color: inherit;
}
.ctx-sep {
  height: 1px;
  background: var(--border);
  margin: 3px 0;
}
.ctx-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
  padding: 5px 10px 2px;
}
.ctx-shortcut {
  margin-left: auto;
  font-size: 10px;
  color: var(--fg3);
  font-family: var(--font-mono);
}
#notif-area {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 5px;
  pointer-events: none;
  max-width: 300px;
}
.notif {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  box-shadow: var(--shadow2);
  font-size: 12px;
  font-weight: 500;
  animation: notifin 0.2s ease;
  pointer-events: auto;
}
@keyframes notifin {
  from {
    transform: translateX(16px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
.notif i {
  font-size: 15px;
}
.notif.success {
  border-left: 3px solid var(--suc);
}
.notif.success i {
  color: var(--suc);
}
.notif.error {
  border-left: 3px solid var(--err);
}
.notif.error i {
  color: var(--err);
}
.notif.info {
  border-left: 3px solid var(--acc);
}
.notif.info i {
  color: var(--acc);
}
.notif.warn {
  border-left: 3px solid var(--warn);
}
.notif.warn i {
  color: var(--warn);
}
.focus-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg0);
  z-index: 500;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.focus-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}
.focus-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 80px 120px;
}
.focus-toolbar {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 10;
}
.export-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}
.export-card {
  border: 1.5px solid var(--border);
  border-radius: var(--rad2);
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg0);
}
.export-card:hover {
  border-color: var(--acc);
  background: var(--acc-bg);
  transform: translateY(-1px);
}
.export-card i {
  font-size: 26px;
  color: var(--acc);
  margin-bottom: 7px;
  display: block;
}
.export-card-name {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 2px;
}
.export-card-desc {
  font-size: 10px;
  color: var(--fg2);
}
.pdf-settings {
  background: var(--bg2);
  border-radius: var(--rad);
  padding: 12px;
  margin: 10px 0;
}
.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 8px;
}
.img-card {
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--rad);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.1s;
  position: relative;
}
.img-card:hover {
  border-color: var(--acc);
  transform: translateY(-1px);
}
.img-card.selected {
  border-color: var(--acc);
  background: var(--acc-bg);
}
.img-card img {
  width: 100%;
  height: 75px;
  object-fit: cover;
  display: block;
  pointer-events: none;
}
.img-card-info {
  padding: 4px 6px;
  font-size: 10px;
  color: var(--fg2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.img-card-actions {
  display: flex;
  gap: 2px;
  padding: 3px 4px;
  border-top: 1px solid var(--border);
}
.img-card-actions button {
  flex: 1;
  font-size: 10px;
  padding: 2px 3px;
  border-radius: 3px;
  transition: background 0.1s;
  color: var(--fg1);
}
.img-card-actions button:hover {
  background: var(--bg3);
  color: var(--fg0);
}
.img-sel-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  background: var(--acc);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 10px;
}
.crop-wrap {
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
  border-radius: var(--rad);
  cursor: crosshair;
  user-select: none;
  line-height: 0;
}
.crop-wrap img {
  display: block;
  max-width: 100%;
  max-height: 320px;
  margin: 0 auto;
}
.crop-sel {
  position: absolute;
  border: 2px solid #fff;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.55);
}
.template-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.template-card {
  border: 1.5px solid var(--border);
  border-radius: var(--rad);
  padding: 10px;
  cursor: pointer;
  transition: all 0.15s;
}
.template-card:hover {
  border-color: var(--acc);
  background: var(--acc-bg);
  transform: translateY(-1px);
}
.template-icon {
  font-size: 20px;
  margin-bottom: 5px;
  color: var(--acc);
}
.template-name {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 2px;
}
.template-desc {
  font-size: 10px;
  color: var(--fg2);
}
.slide-r-enter-active,
.slide-r-leave-active {
  transition: all 0.2s ease;
}
.slide-r-enter-from,
.slide-r-leave-to {
  opacity: 0;
  transform: translateX(16px);
}
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.15s;
}
.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}
@media print {
  html,
  body {
    height: auto !important;
    overflow: visible !important;
  }
  #vue-root,
  #app-body,
  #main,
  #editor-pane,
  #preview-pane,
  #preview-scroller {
    overflow: visible !important;
    height: auto !important;
    display: block !important;
  }
  #topbar,
  #statusbar,
  #sidebar,
  #editor-pane,
  #resizer,
  .pane-toolbar,
  #ctx-menu,
  #notif-area,
  .style-panel,
  .focus-toolbar,
  #style-panel-wrap {
    display: none !important;
  }
  #preview-pane {
    display: block !important;
    border: none !important;
    overflow: visible !important;
  }
  #preview-scroller {
    overflow: visible !important;
    height: auto !important;
  }
  #preview-page {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    min-height: 0 !important;
    background: white !important;
  }
  @page {
    margin: 2cm 2.5cm;
  }
}
.block-organizer {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: var(--bg1);
}
.block-org-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg0);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.block-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}
.block-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg0);
  border: 1.5px solid var(--border);
  border-radius: var(--rad);
  margin-bottom: 6px;
  cursor: default;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
  position: relative;
}
.block-item:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow);
}
.block-item.drag-over {
  border-color: var(--acc);
  box-shadow: 0 0 0 2px var(--acc-bg);
}
.block-item.dragging {
  opacity: 0.4;
  border-style: dashed;
}
.block-item.selected {
  border-color: var(--acc);
  background: var(--acc-bg);
}
.block-drag-handle {
  cursor: grab;
  color: var(--fg3);
  padding: 2px;
  flex-shrink: 0;
  margin-top: 2px;
}
.block-drag-handle:active {
  cursor: grabbing;
}
.block-drag-handle i {
  font-size: 16px;
}
.block-content-preview {
  flex: 1;
  min-width: 0;
}
.block-type-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--acc);
  background: var(--acc-bg);
  padding: 1px 6px;
  border-radius: 99px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-bottom: 4px;
}
.block-text-preview {
  font-size: 12px;
  color: var(--fg1);
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.block-actions-col {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.1s;
}
.block-item:hover .block-actions-col {
  opacity: 1;
}
.block-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  color: var(--fg3);
  transition:
    background 0.1s,
    color 0.1s;
  font-size: 12px;
}
.block-action-btn:hover {
  background: var(--bg3);
  color: var(--fg0);
}
.block-action-btn.danger:hover {
  background: #fee2e2;
  color: var(--err);
}
.block-add-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 0;
}
.block-add-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--rad);
  font-size: 12px;
  color: var(--fg3);
  cursor: pointer;
  border: 1px dashed var(--border);
  background: transparent;
  transition: all 0.1s;
  width: 100%;
  justify-content: center;
}
.block-add-btn:hover {
  background: var(--bg0);
  color: var(--fg0);
  border-color: var(--border2);
}
.block-type-menu {
  position: fixed;
  z-index: 500;
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--rad2);
  box-shadow: var(--shadow2);
  padding: 5px;
  min-width: 180px;
}
.block-type-opt {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  color: var(--fg0);
  transition: background 0.1s;
}
.block-type-opt:hover {
  background: var(--bg2);
}
.block-type-opt i {
  font-size: 14px;
  color: var(--acc);
}
.block-inline-editor {
  width: 100%;
  min-height: 60px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 6px;
  resize: vertical;
  margin-top: 4px;
  color: var(--fg0);
}
.block-inline-editor:focus {
  border-color: var(--acc);
  outline: none;
  background: var(--bg0);
}
.latex-builder {
  display: flex;
  gap: 0;
  height: 100%;
}
.lb-sidebar {
  width: 200px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--bg1);
}
.lb-sidebar-section {
  padding: 8px;
}
.lb-sidebar-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
  margin-bottom: 6px;
}
.lb-cat-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 5px;
  font-size: 11px;
  cursor: pointer;
  color: var(--fg1);
  transition: background 0.1s;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  font-family: var(--font-ui);
}
.lb-cat-btn:hover {
  background: var(--bg2);
  color: var(--fg0);
}
.lb-cat-btn.active {
  background: var(--acc-bg);
  color: var(--acc);
}
.lb-cat-btn i {
  font-size: 14px;
  flex-shrink: 0;
}
.lb-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.lb-symbols {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(118px, 4fr));
  gap: 6px;
  padding: 12px;
  overflow-y: auto;
  flex: 1;
}
.lb-sym {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 7px 4px;
  border: 1.5px solid var(--border);
  border-radius: var(--rad);
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg0);
  min-height: 52px;
  justify-content: center;
}
.lb-sym:hover {
  border-color: var(--acc);
  background: var(--acc-bg);
  transform: translateY(-1px);
}
.lb-sym-preview {
  font-size: 18px;
  line-height: 1;
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-sym-label {
  font-size: 9px;
  color: var(--fg3);
  text-align: center;
  line-height: 1.2;
  word-break: break-all;
}
.lb-bottom {
  border-top: 1px solid var(--border);
  padding: 12px;
  flex-shrink: 0;
  background: var(--bg0);
}
.lb-preview-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 10px;
}
.lb-tex-input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 8px 10px;
  min-height: 52px;
  resize: vertical;
  color: var(--fg0);
}
.lb-tex-input:focus {
  outline: none;
  border-color: var(--acc);
  background: var(--bg0);
}
.lb-rendered {
  flex: 1;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 8px 12px;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: auto;
  font-size: 18px;
}
.lb-mode-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}
.lb-mode-tab {
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg0);
  color: var(--fg2);
  transition: all 0.1s;
}
.lb-mode-tab.active {
  background: var(--acc);
  border-color: var(--acc);
  color: #fff;
}
.mermaid-builder {
  display: flex;
  gap: 0;
  height: 100%;
  min-height: 0;
}
.mb-sidebar {
  width: 210px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--bg1);
}
.mb-sidebar-section {
  padding: 8px;
}
.mb-sidebar-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
  margin-bottom: 5px;
}
.mb-node-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 5px;
  font-size: 11px;
  cursor: pointer;
  color: var(--fg1);
  transition: background 0.1s;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  font-family: var(--font-ui);
  margin-bottom: 2px;
}
.mb-node-btn:hover {
  background: var(--bg2);
}
.mb-node-preview {
  width: 32px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 600;
  border-radius: 3px;
  background: var(--acc-bg);
  color: var(--acc);
  border: 1px solid var(--acc);
}
.mb-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}
.mb-canvas-wrap {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--bg1);
}
.mb-svg-canvas {
  width: 100%;
  height: 100%;
  cursor: default;
}
.mb-code-panel {
  height: 160px;
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.mb-code-area {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg0);
  border: none;
  outline: none;
  padding: 10px 12px;
  resize: none;
  color: var(--fg0);
  line-height: 1.6;
}
.mb-code-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--bg0);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.mb-node-el {
  cursor: move;
  user-select: none;
}
.mb-node-el:hover .mb-node-body {
  stroke: var(--acc);
  stroke-width: 2;
}
.mb-node-body {
  fill: var(--bg0);
  stroke: var(--border2);
  stroke-width: 1.5;
  transition: stroke 0.15s;
}
.mb-node-body.selected {
  stroke: var(--acc);
  stroke-width: 2.5;
  fill: var(--acc-bg);
}
.mb-node-text {
  font-family: var(--font-ui);
  font-size: 12px;
  fill: var(--fg0);
  pointer-events: none;
}
.mb-edge {
  stroke: var(--border2);
  stroke-width: 1.5;
  fill: none;
  marker-end: url(#arrowhead);
}
.mb-edge.selected {
  stroke: var(--acc);
  stroke-width: 2.5;
}
.mb-edge-label {
  font-family: var(--font-ui);
  font-size: 10px;
  fill: var(--fg2);
}
.mb-connect-hint {
  font-family: var(--font-ui);
  font-size: 11px;
  fill: var(--fg3);
}