:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --sidebar: #efeeea;
  --text: #1d1d1b;
  --muted: #6b6a66;
  --border: #e2e0da;
  --accent: #1f7a5a;
  --accent-soft: #e3f1ea;
  --warn: #9a5b00;
  --warn-soft: #fbefd9;
  --danger: #b3261e;
  --code-bg: #f1f0ec;
  --mark: #fde892;
  --radius: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a19; --surface: #222221; --sidebar: #151514; --text: #ecebe7; --muted: #9d9b95;
    --border: #353431; --accent: #4cc393; --accent-soft: #1d3a2e; --warn: #f0b457; --warn-soft: #3b2e17;
    --danger: #ff8a80; --code-bg: #2c2c2a; --mark: #6b5a14;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font: 15px/1.55 var(--font); color: var(--text); background: var(--bg); }
a { color: var(--accent); }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

.layout { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--sidebar); border-right: 1px solid var(--border); padding: 16px 12px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; color: var(--text); text-decoration: none; padding: 4px 8px 14px; }
.new-card { display: block; text-align: center; margin: 0 4px 16px; }
nav h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 8px 6px; font-weight: 600; }
nav a {
  display: flex; justify-content: space-between; gap: 8px; padding: 5px 8px; border-radius: 6px;
  color: var(--text); text-decoration: none; font-size: 14px;
}
nav a:hover { background: color-mix(in srgb, var(--text) 6%, transparent); }
nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
nav a .count { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
nav a.folder { padding-left: 22px; font-size: 13.5px; }
nav a.warn .count { color: var(--warn); font-weight: 600; }
nav details summary { list-style: none; cursor: pointer; }
nav details summary::-webkit-details-marker { display: none; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 4px; padding: 0 6px; }
.tag-cloud a { display: inline-block; padding: 1px 8px; font-size: 12px; border: 1px solid var(--border); border-radius: 99px; }

.main { min-width: 0; }
.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; gap: 8px; align-items: center;
  padding: 12px 32px; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}
#search {
  width: 100%; max-width: 640px; padding: 9px 14px; border: 1px solid var(--border); border-radius: 99px;
  background: var(--surface); outline: none;
}
#search:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.menu-btn { display: none; }
main { padding: 24px 32px 64px; max-width: 900px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); cursor: pointer; text-decoration: none;
  color: var(--text); font-size: 14px; white-space: nowrap;
}
.btn:hover { border-color: color-mix(in srgb, var(--text) 30%, var(--border)); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #0d2219; } }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }
.icon-btn { border: 0; background: none; font-size: 20px; cursor: pointer; padding: 4px 8px; }

.list-header { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.list-header h1 { font-size: 22px; margin: 0; }
.list-header .muted { font-size: 13px; }
.muted { color: var(--muted); }
.card-list { list-style: none; margin: 0; padding: 0; }
.card-list li a {
  display: block; padding: 14px 16px; margin-bottom: 8px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); color: inherit; text-decoration: none;
}
.card-list li a:hover, .card-list li a.focused { border-color: var(--accent); }
.card-list .title { font-weight: 600; display: flex; align-items: center; gap: 8px; }
.card-list .snippet { color: var(--muted); font-size: 13.5px; margin-top: 3px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-list .meta { font-size: 12px; color: var(--muted); margin-top: 6px; }
mark { background: var(--mark); color: inherit; border-radius: 2px; }

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }
.dot.warn { background: var(--warn); }

.card-head h1 { font-size: 28px; line-height: 1.25; margin: 4px 0 10px; }
.crumbs { font-size: 13px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 18px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 99px; font-size: 13px;
  background: var(--accent-soft); color: var(--accent); font-weight: 500;
}
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.card-meta { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; font-size: 13px; color: var(--muted); }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tags a { font-size: 12px; padding: 1px 9px; border-radius: 99px; background: var(--code-bg); color: var(--muted); text-decoration: none; }

.content {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px;
  overflow-wrap: anywhere;
}
.content > :first-child { margin-top: 0; }
.content > :last-child { margin-bottom: 0; }
.content h1 { font-size: 23px; } .content h2 { font-size: 19px; } .content h3 { font-size: 16px; }
.content h1, .content h2, .content h3 { margin: 1.4em 0 .5em; line-height: 1.3; }
.content p { margin: .6em 0; }
.content img { max-width: 100%; height: auto; border-radius: 4px; border: 1px solid var(--border); }
.content code { font-family: var(--mono); font-size: .88em; background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
.content pre { background: var(--code-bg); padding: 12px 14px; border-radius: 6px; overflow-x: auto; font-size: 13px; }
.content pre code { background: none; padding: 0; white-space: pre; }
.content blockquote { margin: .8em 0; padding: 2px 14px; border-left: 3px solid var(--border); color: var(--muted); }
.content .callout, .content section { padding: 10px 16px; border-radius: 6px; margin: .8em 0; background: var(--warn-soft); }
@media (prefers-color-scheme: dark) { .content .callout[style] { color: #1d1d1b; } .content .callout[style] a { color: #0e5a40; } }
.content table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
.content td, .content th { border: 1px solid var(--border); padding: 6px 10px; vertical-align: top; }
.content td p { margin: 0; }
.content iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 6px; }
.content hr { border: 0; border-top: 1px solid var(--border); margin: 1.5em 0; }
.content details { border: 1px solid var(--border); border-radius: 6px; padding: 8px 12px; }
.content summary { cursor: pointer; font-weight: 600; }
.content li p { margin: 0; }

.card-footer { font-size: 12.5px; color: var(--muted); margin-top: 14px; display: flex; gap: 16px; flex-wrap: wrap; }

/* Editor */
.editor .title-input { width: 100%; font-size: 26px; font-weight: 700; border: 0; background: none; outline: none; padding: 4px 0; margin-bottom: 8px; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px 14px; margin-bottom: 16px; }
.fields label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); font-weight: 500; }
.fields input, .fields select, dialog input {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); font-size: 14px; color: var(--text);
}
.toolbar {
  display: flex; flex-wrap: wrap; gap: 2px; padding: 6px; border: 1px solid var(--border); border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0; background: var(--surface); position: sticky; top: 61px; z-index: 2;
}
.toolbar button { border: 0; background: none; padding: 4px 9px; border-radius: 5px; cursor: pointer; font-size: 13.5px; min-width: 30px; }
.toolbar button:hover { background: var(--code-bg); }
.toolbar .sep { width: 1px; background: var(--border); margin: 3px 4px; }
.editor .content { border-radius: 0 0 var(--radius) var(--radius); min-height: 360px; outline: none; }
.editor .content:focus { border-color: var(--accent); }
.editor textarea.content { width: 100%; font-family: var(--mono); font-size: 13px; resize: vertical; }
.editor-actions { display: flex; gap: 8px; margin-top: 16px; position: sticky; bottom: 0; padding: 12px 0; background: var(--bg); }

dialog { border: 1px solid var(--border); border-radius: 12px; padding: 22px; width: min(420px, 90vw); background: var(--surface); color: var(--text); }
dialog::backdrop { background: rgb(0 0 0 / .35); }
dialog h2 { margin: 0 0 6px; font-size: 18px; }
dialog p { margin: 0 0 12px; color: var(--muted); }
dialog input { width: 100%; }
dialog .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.error { color: var(--danger); font-size: 13px; min-height: 1em; margin: 6px 0 0 !important; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 9px 16px; border-radius: 8px; font-size: 14px; z-index: 50; box-shadow: 0 6px 24px rgb(0 0 0 / .2);
}
.empty { text-align: center; padding: 48px 16px; color: var(--muted); }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 20; width: 280px; left: 0; transform: translateX(-100%); transition: transform .2s; box-shadow: 0 0 30px rgb(0 0 0 / .2); }
  .sidebar.open { transform: none; }
  .menu-btn { display: block; }
  .topbar { padding: 10px 16px; }
  main { padding: 16px 16px 48px; }
  .content { padding: 16px; }
}

/* ---------- Added features ---------- */
.topbar { justify-content: space-between; }
.user-chip { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); font-size: 13.5px; padding: 4px 10px 4px 4px; border-radius: 99px; flex: none; }
.user-chip:hover { background: color-mix(in srgb, var(--text) 6%, transparent); }
.user-chip img, .user-chip .avatar { width: 28px; height: 28px; border-radius: 50%; }
.user-chip .avatar { display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 13px; }
@media (max-width: 800px) { .user-name { display: none; } }

nav a.fav span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-footer { border-top: 1px solid var(--border); margin-top: 18px; padding-top: 10px; }

.page-title { font-size: 24px; margin: 6px 0 18px; }
.btn.small { padding: 3px 10px; font-size: 12.5px; }
.danger-fill { background: var(--danger) !important; border-color: var(--danger) !important; color: #fff !important; }
.link-btn { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 0; font-size: 12.5px; }
.pill { display: inline-block; font-size: 11.5px; padding: 1px 8px; border-radius: 99px; background: var(--code-bg); color: var(--muted); font-weight: 500; }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.small { font-size: 12.5px; }
.star, .star-btn.on { color: #d49b00; }
.star-btn { border: 0; background: none; font-size: 24px; cursor: pointer; color: var(--muted); vertical-align: 2px; padding: 0 4px; line-height: 1; }
.star-btn:hover { color: #d49b00; }

.banner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; font-size: 14px; background: var(--warn-soft); color: var(--warn); }
.banner.danger { background: color-mix(in srgb, var(--danger) 12%, var(--surface)); color: var(--danger); }

.similar { background: var(--warn-soft); color: var(--text); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 14px; font-size: 14px; }
.similar ul { margin: 6px 0 0; padding-left: 20px; }

/* Comments */
.comments { margin-top: 28px; }
.comments h2 { font-size: 17px; margin: 0 0 10px; }
.comment { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 8px; }
.comment.flag { border-left: 3px solid var(--warn); }
.comment.resolved { opacity: .7; }
.comment-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; }
.comment-actions { margin-left: auto; display: flex; gap: 12px; }
.comment-body { white-space: pre-wrap; margin-top: 4px; }
.comment-form { display: flex; gap: 8px; align-items: flex-start; }
.comment-form textarea, dialog textarea { flex: 1; width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); resize: vertical; font: inherit; }

/* History */
.history { display: grid; grid-template-columns: 260px 1fr; gap: 20px; align-items: start; }
.revisions { list-style: none; margin: 0; padding: 0; position: sticky; top: 76px; max-height: calc(100vh - 100px); overflow-y: auto; }
.revisions a { display: flex; flex-direction: column; padding: 8px 10px; border-radius: 6px; color: var(--text); text-decoration: none; font-size: 13.5px; }
.revisions a:hover { background: color-mix(in srgb, var(--text) 5%, transparent); }
.revisions a.active { background: var(--accent-soft); }
.revisions .muted { font-size: 12.5px; }
.revisions .pill { align-self: flex-start; margin: 2px 0; }
.revision { min-width: 0; }
.revision-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.tabs, .segmented { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.tab, .segmented a { border: 0; background: none; padding: 6px 14px; cursor: pointer; font-size: 13.5px; color: var(--muted); text-decoration: none; }
.tab.active, .segmented a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.diff { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 0; font-size: 13.5px; overflow-x: auto; }
.diff-line { padding: 1px 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.diff-line.add { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.diff-line.add::before { content: '+ '; color: var(--accent); }
.diff-line.del { background: color-mix(in srgb, var(--danger) 13%, transparent); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--danger) 50%, transparent); }
.diff-line.del::before { content: '− '; color: var(--danger); }
.diff-gap { color: var(--muted); }
.revision h2 { font-size: 20px; }
@media (max-width: 800px) { .history { grid-template-columns: 1fr; } .revisions { position: static; max-height: 240px; } }

/* Analytics & settings */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 18px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.stat-value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 13px; color: var(--muted); }
.stat-sub { font-size: 12px; color: var(--warn); margin-top: 2px; }
.panels { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 14px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 14px; min-width: 0; }
.panels .panel { margin-bottom: 0; }
.panel h2 { font-size: 15px; margin: 0 0 4px; }
.panel > p { margin: 0 0 10px; font-size: 13.5px; }
.empty-small { font-size: 13.5px; }
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13.5px; margin-top: 6px; }
table.data th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
table.data td { padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data tr:last-child td { border-bottom: 0; }
table.data td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
@media (max-width: 800px) { .panels { grid-template-columns: 1fr; } }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.inline-form input { flex: 1; min-width: 200px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); font-family: var(--mono); font-size: 13px; }
.token-box { background: var(--accent-soft); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 12px; }
.token-box p { margin: 0; }

.token-slot { background: var(--accent-soft); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 12px; display: grid; gap: 6px; min-width: 0; }
.token-slot p { margin: 0; }
.snippet-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; margin-top: 6px; }
.code-snippet { margin: 0; padding: 10px 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; font: 12.5px/1.5 var(--mono); overflow-x: auto; white-space: pre; }
details.fallback { margin-top: 12px; }
details.fallback summary { cursor: pointer; color: var(--muted); font-size: 13.5px; margin-bottom: 8px; }