/* Better MD viewer
   The active theme (app.js) sets the palette; surfaces and lines are layered from it here. */

:root {
  --paper: #2e3440;
  --ink: #edeff4;
  --ink-2: #d8dee9;
  --ink-3: #a6b1c5;
  --ink-4: #7b869c;
  --accent: #88c0d0;
  --accent-2: #384a56;
  --danger: #bf616a;

  /* Layers. Themes may set them; otherwise they are mixed from paper and ink. */
  --surface: color-mix(in oklab, var(--paper), var(--ink) 7%);
  --surface-2: color-mix(in oklab, var(--paper), var(--ink) 12%);
  --line: color-mix(in oklab, var(--paper), var(--ink) 9%);
  --line-2: color-mix(in oklab, var(--paper), var(--ink) 15%);

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --serif: "IBM Plex Serif", ui-serif, Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--accent), transparent 30%);
  outline-offset: 1px;
}
::selection { background: color-mix(in oklab, var(--accent), transparent 62%); color: var(--ink); }

/* Small uppercase labels, as in section eyebrows */
.eyebrow,
.side-title,
.outline-title,
.tweaks h4,
.modal-eyebrow,
.splash-feat .lbl,
.splash-resume .resume-label {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Shell */
.app {
  position: relative;
  display: grid;
  grid-template-rows: 48px minmax(0, 1fr);
  grid-template-columns: var(--sidebar-w, 300px) minmax(0, 1fr);
  grid-template-areas: "top top" "side main";
  height: 100vh;
  height: 100dvh;
  width: 100vw;
}
.app.sidebar-hidden { grid-template-columns: 0 minmax(0, 1fr); }
.app.sidebar-hidden .sidebar { visibility: hidden; border-right: 0; }
.app.resizing { cursor: col-resize; user-select: none; }
.sidebar-resizer {
  position: absolute;
  top: 48px;
  bottom: 0;
  left: calc(var(--sidebar-w, 300px) - 3px);
  width: 6px;
  cursor: col-resize;
  z-index: 6;
}
.sidebar-resizer:hover,
.sidebar-resizer:focus-visible,
.app.resizing .sidebar-resizer {
  background: color-mix(in oklab, var(--accent), transparent 55%);
  outline: none;
}
.app.sidebar-hidden .sidebar-resizer { display: none; }

/* Top bar */
.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px 0 10px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  z-index: 5;
}
.brand {
  display: flex;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink-3);
  white-space: nowrap;
  user-select: none;
}
.brand .mark {
  width: 7px;
  height: 7px;
  margin: 0 2px;
  border-radius: 1.5px;
  background: var(--accent);
}
.brand b { font-weight: 500; color: var(--ink); }
.top-meta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-3);
  font-size: 12.5px;
}
.status { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.status svg { flex: 0 0 auto; }
.status .dot-sep { color: var(--ink-4); }
.icon-btn {
  width: 30px; height: 30px;
  display: inline-grid; place-items: center;
  border-radius: var(--radius);
  color: var(--ink-3);
  transition: background 120ms ease, color 120ms ease;
}
.icon-btn:hover { background: var(--surface); color: var(--ink); }
.icon-btn.on { background: var(--surface-2); color: var(--ink); }

/* Sidebar */
.sidebar {
  grid-area: side;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: var(--paper);
}
.side-actions {
  padding: 14px 14px 10px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 120ms ease, border-color 120ms ease;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn svg { color: var(--ink-3); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { background: var(--surface); }

.search-wrap {
  position: relative;
  display: none;
  padding: 0 14px 10px;
}
.search-wrap.on { display: block; }
.search {
  width: 100%;
  height: 34px;
  padding: 0 38px 0 32px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  transition: border-color 120ms ease, background 120ms ease;
}
.search::placeholder { color: var(--ink-4); }
.search:focus { outline: none; border-color: color-mix(in oklab, var(--accent), var(--line-2) 45%); }
/* Centred on the input (the wrapper has bottom padding). */
.search-wrap .mag {
  position: absolute;
  left: 25px; top: 17px;
  transform: translateY(-50%);
  color: var(--ink-4);
  pointer-events: none;
}
.search-mode {
  position: absolute;
  right: 19px; top: 17px;
  transform: translateY(-50%);
  width: 26px; height: 24px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-4);
}
.search-mode:hover { color: var(--ink); background: var(--surface-2); }
.search-mode[aria-pressed="true"] { color: var(--accent); background: var(--accent-2); }

.side-sections {
  flex: 1;
  min-height: 0;
  overflow: auto;
  scrollbar-gutter: stable;
  padding: 0 0 16px;
}
.side-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 14px 6px 18px;
}
.side-title button {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-3);
}
.side-title button:hover { color: var(--danger); }
.side-tools { display: flex; align-items: center; gap: 2px; }
.side-title .tool {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-4);
}
.side-title .tool:hover { background: var(--surface); color: var(--ink); }
.side-tools #clearFilesBtn { margin-left: 6px; }
.files-title {
  position: sticky;
  top: 0;
  z-index: 2;
  padding-top: 10px;
  padding-bottom: 6px;
  background: var(--paper);
}

.empty-side {
  margin: 10px 14px;
  padding: 14px 16px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-3);
}
.empty-side b { color: var(--ink); font-weight: 500; }
.kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  color: var(--ink-2);
  background: var(--surface);
}

/* Recents */
.recents { padding: 0 8px; }
.recent {
  display: flex;
  align-items: center;
  border-radius: var(--radius);
}
.recent:hover { background: var(--surface); }
.recent-open {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  grid-template-areas: "ico title" "ico meta";
  gap: 0 10px;
  align-items: center;
  padding: 7px 4px 7px 8px;
  text-align: left;
}
.recent-open:focus-visible { outline-offset: -2px; border-radius: var(--radius); }
.recent .ricon {
  grid-area: ico;
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink-3);
}
.recent:hover .ricon { background: var(--surface-2); }
.recent .rtitle {
  grid-area: title;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recent .rmeta {
  grid-area: meta;
  font-size: 12px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recent .rforget {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  margin-right: 6px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-4);
  opacity: 0;
}
.recent:hover .rforget, .recent:focus-within .rforget { opacity: 1; }
.recent .rforget:hover { background: var(--surface-2); color: var(--danger); }
.recent.no-handle .ricon { opacity: 0.6; }

/* File tree */
.tree {
  --indent: 12px;
  --gutter: 8px;
  padding: 0 8px 4px;
}
.tree-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  height: 26px;
  padding: 0 8px 0 calc(var(--gutter) + var(--depth, 0) * var(--indent));
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--ink-2);
  text-align: left;
  cursor: pointer;
  user-select: none;
  scroll-margin: 44px 0 8px;
}
.tree-row:hover { background: var(--surface); }
.tree-row:focus-visible { outline-offset: -2px; }
.tree-row .twist {
  flex: 0 0 12px;
  height: 12px;
  display: grid; place-items: center;
  color: var(--ink-4);
}
.tree-row .twist svg { transition: transform 120ms ease; }
.tree-dir.collapsed > .dir-row .twist svg { transform: rotate(-90deg); }
.tree-row .name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dir-row { color: var(--ink); font-weight: 500; }
.tree-row .count {
  font-size: 11px;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  color: var(--ink-4);
}
.tree-row .count.hits { color: var(--accent); }
.file-row .row-main {
  flex: 1;
  min-width: 0;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  text-align: left;
}
.file-row .row-main:focus-visible { outline-offset: -2px; border-radius: var(--radius-sm); }
.tree-children { position: relative; }
.tree-children::before {
  content: "";
  position: absolute;
  top: 2px; bottom: 2px;
  left: calc(var(--gutter) + var(--depth, 0) * var(--indent) + 5.5px);
  width: 1px;
  background: var(--line);
  pointer-events: none;
  z-index: 1;
}
.tree-dir.collapsed > .tree-children { display: none; }
.file-row.active { background: var(--surface-2); color: var(--ink); }
.file-row .dot-mark {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--ink-4);
}
.file-row.active .dot-mark { background: var(--accent); box-shadow: 0 0 0 2px color-mix(in oklab, var(--accent), transparent 75%); }
.file-row .remove {
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 5px;
  font-size: 14px;
  color: var(--ink-4);
  opacity: 0;
}
.file-row:hover .remove, .file-row:focus-within .remove { opacity: 1; }
/* Changed on disk since you last opened it */
.file-row.unseen { color: var(--ink); }
.file-row.unseen .name { font-weight: 600; }
.file-row.unseen .dot-mark,
.dir-row .pip {
  background: var(--warning-accent, var(--accent));
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--warning-accent, var(--accent)), transparent 75%);
}
.dir-row .pip { flex: 0 0 auto; width: 6px; height: 6px; border-radius: 50%; }
.file-row .remove:hover { background: var(--surface-2); color: var(--danger); }

/* Main */
.main {
  grid-area: main;
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto minmax(0, 1fr);
  position: relative;
  background: var(--paper);
}
.crumbs {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 8px 24px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-3);
  flex-wrap: wrap;
}
.crumbs .sep { color: var(--ink-4); }
.crumbs .cur { color: var(--ink); font-weight: 500; }
.crumbs .spacer { flex: 1; }
.crumbs .meta { color: var(--ink-4); font-size: 12px; font-variant-numeric: tabular-nums; }

.reader {
  min-height: 0;
  min-width: 0;
  overflow: auto;
  padding: 48px 48px 120px;
  user-select: text;
  -webkit-user-select: text;
}
/* Focused so the arrow keys scroll it; the whole pane is the target, so no ring. */
.reader:focus, .reader:focus-visible { outline: none; }
.reader-inner {
  max-width: var(--reader-width, 76ch);
  margin: 0 auto;
  font-family: var(--reader-font, var(--sans));
  font-size: var(--reader-size, 16px);
  line-height: 1.7;
  color: var(--ink-2);
  user-select: text;
  -webkit-user-select: text;
}
.reader-inner [id] { scroll-margin-top: 24px; }
.reader-inner .heading-anchor {
  margin-left: .35em;
  color: var(--ink-4);
  font-weight: 400;
  text-decoration: none;
  opacity: 0;
}
.reader-inner h1:hover .heading-anchor,
.reader-inner h2:hover .heading-anchor,
.reader-inner h3:hover .heading-anchor,
.reader-inner h4:hover .heading-anchor,
.reader-inner h5:hover .heading-anchor,
.reader-inner h6:hover .heading-anchor,
.reader-inner .heading-anchor:focus { opacity: 1; }

/* Outline */
.outline {
  width: 236px;
  min-height: 0;
  overflow: auto;
  padding: 48px 20px 40px 4px;
  font-size: 12.5px;
  line-height: 1.4;
}
.outline[hidden] { display: none; }
.outline-title { margin: 0 0 10px 14px; }
.outline a {
  display: block;
  padding: 4px 8px 4px 12px;
  border-left: 2px solid var(--line);
  color: var(--ink-3);
  text-decoration: none;
}
.outline a:hover { color: var(--ink); }
.outline a.on { color: var(--ink); border-left-color: var(--accent); }
.outline a.lvl-1 { padding-left: 24px; }
.outline a.lvl-2 { padding-left: 36px; font-size: 12px; }

/* Document */
.md h1, .md h2, .md h3, .md h4, .md h5, .md h6 {
  margin: 2em 0 0.6em;
  font-family: inherit;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.md h1 { margin-top: 0; font-size: 1.9em; font-weight: 500; letter-spacing: -0.02em; }
.md h2 { margin-top: 2.1em; font-size: 1.4em; font-weight: 500; letter-spacing: -0.015em; }
.md h3 { font-size: 1.15em; }
.md h4 { font-size: 1em; }
.md h5, .md h6 { font-size: .9em; color: var(--ink-3); }
.md p { margin: 0 0 1em; }
.md a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklab, var(--accent), transparent 62%);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.md a:hover { text-decoration-color: var(--accent); }
.md strong { font-weight: 600; color: var(--ink); }
.md em { font-style: italic; }
.md hr { margin: 2.4em 0; border: 0; border-top: 1px solid var(--line); }
.md blockquote {
  margin: 1.3em 0;
  padding: .1em 0 .1em 1.1em;
  border-left: 3px solid var(--line-2);
  color: var(--ink-3);
}
.md blockquote > :first-child { margin-top: 0; }
.md blockquote > :last-child { margin-bottom: 0; }
.md ul, .md ol { --list-indent: 1.5em; margin: 0 0 1em; padding-left: var(--list-indent); }
.md li { margin: 0.3em 0; }
.md li > p { margin: 0.3em 0; }
.md li::marker { color: var(--ink-4); }
.md code {
  padding: .15em .4em;
  border-radius: 5px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .86em;
}
.md pre {
  margin: 1.3em 0;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--surface);
  overflow: auto;
  font-family: var(--mono);
  font-size: .84em;
  line-height: 1.6;
}
.md pre code { padding: 0; background: transparent; color: var(--ink-2); font-size: inherit; }
.md pre.plain { white-space: pre-wrap; }
.md .code-block { position: relative; margin: 1.3em 0; }
.md .code-block pre { margin: 0; }
.copy-code {
  position: absolute;
  top: 8px;
  right: 8px;
  height: 24px;
  padding: 0 9px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 11.5px;
  opacity: 0;
  transition: opacity 120ms ease;
}
.code-block:hover .copy-code,
.copy-code:focus-visible,
.copy-code.done { opacity: 1; }
.copy-code:hover { background: var(--surface-2); color: var(--ink); }
.copy-code.done { color: var(--question-accent, var(--accent)); }
@media (hover: none) { .copy-code { opacity: 1; } }
.clipboard-buffer { position: fixed; top: 0; left: 0; opacity: 0; pointer-events: none; }
.md img { max-width: 100%; height: auto; border-radius: var(--radius); }
.md input[type="checkbox"] { margin-right: 6px; accent-color: var(--accent); }

/* Tables: a filled header bar, then rows divided by lines */
.md table {
  width: 100%;
  margin: 1.5em 0;
  border-collapse: separate;
  border-spacing: 0;
  font-family: var(--sans);
  font-size: .88em;
  line-height: 1.5;
}
.md th, .md td { padding: 10px 14px; text-align: left; vertical-align: top; }
.md th {
  background: var(--surface);
  color: var(--ink-3);
  font-size: .93em;
  font-weight: 500;
}
.md th:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.md th:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.md td { border-bottom: 1px solid var(--line); color: var(--ink-2); }

.frontmatter { margin: 0 0 2.2em; font-family: var(--sans); }
.md .frontmatter table {
  margin: 0;
  border-radius: var(--radius);
  background: var(--surface);
  font-size: .84em;
}
.md .frontmatter th,
.md .frontmatter td { padding: 8px 16px; border-bottom: 1px solid var(--line); }
.md .frontmatter tr:last-child th,
.md .frontmatter tr:last-child td { border-bottom: 0; }
.md .frontmatter th {
  width: 10rem;
  border-radius: 0;
  background: none;
  color: var(--ink-3);
  white-space: nowrap;
}
.md .frontmatter td { overflow-wrap: anywhere; }

/* Callouts */
.md blockquote.callout {
  display: grid;
  grid-template-columns: 1fr;
  gap: .45em;
  margin: 1.4em 0;
  padding: 12px 16px 13px 18px;
  border: 0;
  /* Square on the accent side so the bar stays straight. */
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--callout-bg, var(--surface));
  box-shadow: inset 3px 0 0 var(--callout-accent, var(--accent));
  color: var(--ink-2);
  font-family: var(--sans);
}
.callout-title {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  color: var(--callout-accent, var(--accent));
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.callout-icon {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 1.45em;
  height: 1.45em;
  border-radius: 999px;
  background: var(--callout-accent, var(--accent));
  color: var(--paper);
  font-size: .85em;
  font-weight: 700;
  line-height: 1;
}
/* A title written after the marker reads as a sentence, not a label. */
.callout-title.custom { align-items: baseline; font-size: .95em; letter-spacing: 0; text-transform: none; }
.callout-title.custom .callout-icon { font-size: .7em; }
.callout-title strong { color: inherit; }
/* A callout that is only a title keeps nothing but whitespace in its body. */
.callout-body:not(:has(*)) { display: none; }
.callout-body > :first-child { margin-top: 0; }
.callout-body > :last-child { margin-bottom: 0; }
.callout-info { --callout-accent: var(--info-accent); --callout-bg: var(--info-bg); }
.callout-question { --callout-accent: var(--question-accent); --callout-bg: var(--question-bg); }
.callout-important { --callout-accent: var(--important-accent); --callout-bg: var(--important-bg); }
.callout-warning { --callout-accent: var(--warning-accent); --callout-bg: var(--warning-bg); }
.callout-danger { --callout-accent: var(--danger-accent); --callout-bg: var(--danger-bg); }

/* Footnotes */
.md .footnote-ref { font-size: .75em; line-height: 0; }
.md .footnote-ref a { padding: 0 .1em; text-decoration: none; }
.md .footnotes {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid var(--line);
  font-size: .88em;
  color: var(--ink-3);
}
.md .footnotes ol { --list-indent: 1.4em; }
.md .footnote-backref { margin-left: .2em; text-decoration: none; }

/* Remote images wait for consent */
.remote-notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin: 0 0 2em;
  padding: 10px 12px 10px 16px;
  border-radius: var(--radius);
  background: var(--surface);
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ink-3);
}
.remote-notice span { flex: 1 1 240px; }
.remote-notice button {
  height: 26px;
  padding: 0 11px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 12px;
}
.remote-notice button:hover { background: var(--surface-2); }

.md a.broken-link {
  color: var(--ink-3);
  text-decoration-style: dashed;
  text-decoration-color: var(--ink-4);
  cursor: help;
}
.md img.missing-asset,
.md img.remote-held {
  display: inline-block;
  min-width: 2.5em;
  min-height: 1.6em;
  padding: 2px 8px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--ink-4);
  font-family: var(--sans);
  font-size: .8em;
}
/* Blocks that changed in the last live reload. Shadows rather than backgrounds,
   so code blocks and callouts keep their own fill once the tint fades. */
.md { --change-tint: color-mix(in oklab, var(--warning-accent, var(--accent)) 24%, transparent); }
/* The highlight appears at once; only the fade is animated. */
.md .changed { box-shadow: 0 0 0 5px var(--change-tint), inset 0 0 0 999px var(--change-tint); }
.md .changed.settled,
.md tr.changed.settled > * { transition: box-shadow 1.2s ease; }
.md .changed.settled { box-shadow: 0 0 0 5px transparent, inset 0 0 0 999px transparent; }
.md :is(p, li, h1, h2, h3, h4, h5, h6).changed { border-radius: 3px; }
/* A bar in the margin beside the text column, like an editor's change gutter, so it
   never touches the text or a list marker. Code blocks carry it on their wrapper,
   since the pre would clip it. */
.md .changed:where(:not(tr, pre, .callout)) { position: relative; }
.md .changed:where(:not(tr, pre, .callout))::before,
.md .code-block:has(> pre.changed)::before {
  content: "";
  position: absolute;
  top: -5px;
  bottom: -5px;
  left: -12px;
  width: 3px;
  border-radius: 2px;
  background: var(--warning-accent, var(--accent));
}
.md li.changed::before { left: calc(-12px - var(--list-indent)); }
/* Offsets are measured inside a quote's 3px rule. */
.md blockquote.changed::before { left: -15px; }
.md .changed.settled::before,
.md .code-block:has(> pre.settled)::before { opacity: 0; transition: opacity 1.2s ease; }
.md blockquote.callout.changed {
  box-shadow: inset 3px 0 0 var(--callout-accent, var(--accent)), 0 0 0 5px var(--change-tint), inset 0 0 0 999px var(--change-tint);
}
.md blockquote.callout.changed.settled {
  box-shadow: inset 3px 0 0 var(--callout-accent, var(--accent)), 0 0 0 5px transparent, inset 0 0 0 999px transparent;
}
.md tr.changed { box-shadow: none; }
.md tr.changed > * { box-shadow: inset 0 0 0 999px var(--change-tint); }
.md tr.changed.settled > * { box-shadow: inset 0 0 0 999px transparent; }
mark.hit {
  background: color-mix(in oklab, var(--warning-accent, var(--accent)) 38%, transparent);
  color: inherit;
  border-radius: 2px;
}
.md .tag-token.hit {
  background: color-mix(in oklab, var(--warning-accent, var(--accent)) 38%, transparent);
  color: var(--ink);
}

/* Tags and wiki links */
.tag-token,
.wiki-link {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 1.55em;
  margin: 0 .18em .18em 0;
  padding: 1px 8px;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: .84em;
  line-height: 1.35;
  vertical-align: baseline;
  white-space: nowrap;
}
.tag-token { background: var(--accent-2); color: var(--accent); cursor: pointer; }
.tag-token:hover { background: color-mix(in oklab, var(--accent-2), var(--accent) 18%); }
.md .wiki-link {
  background: var(--surface);
  color: var(--ink-2);
  text-decoration: none;
}
.wiki-link::before {
  content: "↗";
  margin-right: .35em;
  color: var(--ink-4);
  font-size: .82em;
}
.md .wiki-link:hover { background: var(--surface-2); color: var(--ink); }
.md .wiki-link.broken-link { background: transparent; color: var(--ink-3); box-shadow: inset 0 0 0 1px var(--line-2); }

/* Syntax highlighting */
.hljs-comment,
.hljs-quote { color: var(--syntax-comment); font-style: italic; }
.hljs-keyword,
.hljs-selector-tag,
.hljs-subst { color: var(--syntax-keyword); font-weight: 600; }
.hljs-string,
.hljs-doctag,
.hljs-regexp { color: var(--syntax-string); }
.hljs-title,
.hljs-section,
.hljs-selector-id { color: var(--syntax-title); font-weight: 600; }
.hljs-name,
.hljs-selector-class,
.hljs-variable,
.hljs-template-variable { color: var(--syntax-variable); }
.hljs-number,
.hljs-literal,
.hljs-type,
.hljs-built_in,
.hljs-builtin-name,
.hljs-params { color: var(--syntax-number); }
.hljs-attr,
.hljs-attribute,
.hljs-symbol,
.hljs-bullet,
.hljs-link,
.hljs-meta { color: var(--syntax-attr); }
.hljs-addition { color: var(--syntax-addition); background: color-mix(in oklab, var(--question-bg), transparent 28%); }
.hljs-deletion { color: var(--syntax-deletion); background: color-mix(in oklab, var(--danger-bg), transparent 28%); }

/* Splash */
.splash { min-height: 100%; }
.splash-hero {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 48px - 40px - 48px - 120px);
  padding: 24px 0 32px;
}
.splash-card { width: min(660px, 100%); }
.splash .eyebrow { margin-bottom: 10px; }
.splash h1 {
  margin: 0 0 8px;
  font-family: var(--sans);
  font-size: 30px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.splash p {
  max-width: 52ch;
  margin: 0 0 28px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-3);
}
.splash p code {
  padding: .1em .35em;
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: .9em;
}
.splash-resume {
  display: grid;
  justify-items: start;
  gap: 3px;
  width: 100%;
  margin: 0 0 12px;
  padding: 14px 18px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  background: var(--surface);
  text-align: left;
  transition: background 120ms ease;
}
.splash-resume:hover { background: var(--surface-2); }
.splash-resume[hidden] { display: none; }
.splash-resume .resume-name { font-size: 16px; font-weight: 500; color: var(--ink); }
.splash-resume .resume-file { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.splash-resume .resume-file:empty { display: none; }
.splash-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 34px 22px;
  border: 1.5px dashed var(--line-2);
  border-radius: var(--radius-lg);
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease;
}
.splash-drop:hover { border-color: var(--accent); background: var(--surface); }
.splash-drop svg { margin-bottom: 4px; color: var(--ink-3); }
.splash-drop-title { font-size: 15px; font-weight: 500; color: var(--ink); }
.splash-drop-sub { font-size: 12px; color: var(--ink-4); }
body.dragging .splash-drop { border-color: var(--accent); background: var(--accent-2); }
.splash-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 36px;
}
.splash-feat .lbl { margin-bottom: 6px; }
.splash-feat .txt { font-size: 13px; line-height: 1.55; color: var(--ink-2); }

/* Drag overlay */
.drop-over {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: none;
  place-items: center;
  background: color-mix(in oklab, var(--paper), transparent 6%);
  pointer-events: none;
}
.drop-over.on { display: grid; }
.drop-over .box {
  padding: 28px 44px;
  border: 2px dashed var(--accent);
  border-radius: var(--radius-lg);
  background: var(--surface);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  z-index: 50;
  padding: 9px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--surface-2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  color: var(--ink);
  font-size: 12.5px;
  opacity: 0;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 140ms ease, transform 140ms ease;
  pointer-events: none;
}
.toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Modal (Safari/Firefox pre-picker explainer) */
.modal-wrap {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: color-mix(in oklab, #000, transparent 55%);
  animation: modal-fade 140ms ease;
}
.modal-wrap[hidden] { display: none; }
@keyframes modal-fade { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  width: min(480px, 100%);
  padding: 22px 24px 20px;
  border: 1px solid var(--line-2);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  color: var(--ink);
}
.modal-eyebrow { margin-bottom: 8px; }
.modal-card h3 {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.modal-card h3 em { font-style: normal; color: var(--accent); }
.modal-card p { margin: 0 0 10px; font-size: 13.5px; line-height: 1.55; color: var(--ink-2); }
.modal-card p em { font-style: italic; color: var(--ink); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.modal-dismiss {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--ink-3);
  user-select: none;
  cursor: pointer;
}
.modal-dismiss input { margin: 0; accent-color: var(--accent); }

/* Scrollbars */
.side-sections::-webkit-scrollbar, .reader::-webkit-scrollbar, .outline::-webkit-scrollbar { width: 10px; height: 10px; }
.side-sections::-webkit-scrollbar-thumb, .reader::-webkit-scrollbar-thumb, .outline::-webkit-scrollbar-thumb {
  border: 3px solid var(--paper);
  border-radius: 10px;
  background: var(--line-2);
}
.side-sections::-webkit-scrollbar-thumb:hover, .reader::-webkit-scrollbar-thumb:hover { background: var(--ink-4); }

/* Settings panel */
.tweaks {
  position: fixed;
  top: 54px;
  right: 14px;
  z-index: 100;
  display: none;
  width: 300px;
  padding: 14px 16px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.26);
}
.tweaks.on { display: block; }
.tweaks h4 { margin: 0 0 6px; }
.tweaks .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 36px;
  font-size: 13px;
}
.tweaks .row label,
.tweaks .row-label { color: var(--ink-2); }
.tweaks input[type=range] { width: 130px; accent-color: var(--accent); }
.tweaks input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--accent); }
.tweaks select {
  height: 28px;
  padding: 0 8px;
  border: 1px solid var(--line-2);
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 12.5px;
}
/* Segmented control: radio buttons that look like one switch */
.seg {
  display: inline-flex;
  border: 1px solid var(--line-2);
  border-radius: 7px;
  overflow: hidden;
}
.seg label {
  position: relative;
  padding: 4px 11px;
  font-size: 12.5px;
  color: var(--ink-3);
  cursor: pointer;
  user-select: none;
}
.seg label + label { border-left: 1px solid var(--line-2); }
.seg label:hover { color: var(--ink); }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.tweaks .seg label:has(input:checked) { background: var(--surface-2); color: var(--ink); }
.seg label:has(input:focus-visible) { outline: 2px solid color-mix(in oklab, var(--accent), transparent 30%); outline-offset: -2px; }
.tweaks-foot {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.tweaks-hint { font-size: 12px; color: var(--ink-4); }

/* Narrow screens: the sidebar becomes a drawer */
@media (max-width: 760px) {
  .app,
  .app.sidebar-hidden {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "top" "main";
  }
  .sidebar,
  .app.sidebar-hidden .sidebar {
    position: fixed;
    top: 48px;
    bottom: 0;
    left: 0;
    z-index: 30;
    width: min(320px, 86vw);
    border-right: 1px solid var(--line);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform 160ms ease, visibility 0s linear 160ms;
  }
  .app.drawer-open .sidebar { transform: none; visibility: visible; transition: transform 160ms ease; }
  .sidebar-resizer { display: none; }
  .top-meta .status { display: none; }
  .crumbs { padding: 8px 16px; }
  .reader { padding: 28px 18px 80px; }
  .splash-row { grid-template-columns: 1fr; gap: 18px; }
  .splash h1 { font-size: 26px; }
  .md table { display: block; overflow-x: auto; }
}
@media (max-width: 1100px) {
  .outline { display: none; }
}

/* Reduced motion: nothing slides or rotates; fades stay */
@media (prefers-reduced-motion: reduce) {
  .toast, .toast.on { transform: translateX(-50%); transition: opacity 140ms ease; }
  .sidebar, .app.sidebar-hidden .sidebar, .app.drawer-open .sidebar { transition: none; }
  .tree-row .twist svg { transition: none; }
}

/* Print: just the document, dark on white whatever the theme */
@media print {
  :root {
    --paper: #fff !important; --ink: #111 !important; --ink-2: #222 !important; --ink-3: #4a4a4a !important; --ink-4: #777 !important;
    --surface: #f4f4f4 !important; --surface-2: #ebebeb !important; --line: #e0e0e0 !important; --line-2: #cfcfcf !important;
    --accent: #2f5f9a !important; --accent-2: #e7eef8 !important;
    --info-bg: #f1f4f9 !important; --question-bg: #f1f7ef !important; --warning-bg: #fbf5e7 !important;
    --important-bg: #f5f0fb !important; --danger-bg: #fbf0f0 !important;
    --syntax-comment: #6a737d !important; --syntax-keyword: #8839ef !important; --syntax-string: #22863a !important;
    --syntax-title: #005cc5 !important; --syntax-variable: #b31d28 !important; --syntax-number: #b35900 !important;
    --syntax-attr: #8a6100 !important; --syntax-addition: #22863a !important; --syntax-deletion: #b31d28 !important;
  }
  html, body { height: auto; overflow: visible; background: #fff; }
  .app, .main { display: block; height: auto; width: auto; }
  .topbar, .sidebar, .sidebar-resizer, .crumbs, .outline, .drop-over, .remote-notice,
  .heading-anchor, .copy-code, .toast, .tweaks, .modal-wrap { display: none !important; }
  .reader { overflow: visible; padding: 0; }
  .reader-inner { max-width: none; font-size: 11pt; }
  .md pre { white-space: pre-wrap; }
  .md h1, .md h2, .md h3, .md h4 { break-after: avoid; }
  .md pre, .md table, .md img, .md blockquote { break-inside: avoid; }
  .md .changed:not(.callout), .md tr.changed > * { box-shadow: none !important; }
  .md .callout.changed { box-shadow: inset 3px 0 0 var(--callout-accent, var(--accent)) !important; }
  .md .changed::before, .md .code-block::before { content: none !important; }
}