:root {
  --paper: #FCFCFA;
  --ink: #1C1B18;
  --ink-soft: #57554E;
  --line: #E4E2DB;
  --link: #2B4ACB;
  --link-wash: #EEF1FC;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Newsreader", Georgia, serif;
  font-size: 19px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--link-wash); color: var(--link); }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 1px; }

.mono {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.wrap { max-width: 680px; margin: 0 auto; padding: 0 24px; }

/* The wandering dot's canvas — fixed behind everything, non-interactive */
#wanderer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* The bubble cursor and its ripples ride above the page instead of behind
   it, so a burst reads over the text. Created by site.js only when there is
   a real pointer and motion is allowed — otherwise the native cursor stays.
   The !important is needed to beat cursor:pointer on links and buttons. */
#surface {
  position: fixed;
  inset: 0;
  z-index: 90;          /* above the lightbox, so the bubble is never hidden */
  pointer-events: none;
}
html.bubble-cursor, html.bubble-cursor * { cursor: none !important; }

/* Full view of a header photo, opened by clicking it. The small frames crop
   hard; this is the uncropped image. */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
  background: rgba(28, 27, 24, 0.88);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.lightbox[hidden] { display: none; }   /* beats display:flex above */
.lightbox.shown { opacity: 1; }
.lightbox figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 100%;
  max-height: 100%;
}
.lightbox img {
  display: block;
  max-width: 100%;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 2px;
}
.lightbox figcaption { color: rgba(252, 252, 250, 0.72); text-align: center; }
.lightbox .fig-no { color: rgba(252, 252, 250, 0.5); }

/* Fig. 0 — the hidden author portrait, revealed by clicking the name */
button.wordmark {
  background: none;
  border: none;
  font: inherit;
  font-weight: 500;
  font-size: 1rem;
  font-family: "Newsreader", Georgia, serif;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
}
button.wordmark:hover { color: var(--link); }
button.wordmark:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 1px; }
.dagger {
  color: var(--link);
  font-size: 0.7em;
  margin-left: 2px;
}
/* The name is a link home; the dagger beside it is its own button, so the
   two affordances sit together without one swallowing the other. */
.wordmark-group { white-space: nowrap; }
.dagger-btn {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  line-height: 1;
}
.dagger-btn:hover .dagger { text-decoration: underline; text-underline-offset: 2px; }
.dagger-btn:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 1px; }
header { position: relative; }
.fig0 {
  position: absolute;
  top: calc(100% - 6px);
  left: 0;
  z-index: 10;
  margin: 0;
  padding: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: 0 8px 28px rgba(28, 27, 24, 0.09);
  width: 168px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}
.fig0.shown { opacity: 1; transform: translateY(0); }
/* Fig. 1 hangs off the nav on the right instead of the wordmark on the left.
   The img selector needs both classes to outrank ".fig0 img" further down. */
.fig-bugs { left: auto; right: 0; }
.fig0.fig-bugs img { aspect-ratio: 4 / 3; }
.fig0 img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
  display: block;
  filter: saturate(0.92);
}
.fig0 figcaption {
  margin-top: 8px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ---------- header ---------- */
header { padding: 28px 0; }
.header-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}
.wordmark { color: var(--ink); font-weight: 500; font-size: 1rem; }
.wordmark:hover { text-decoration: none; color: var(--link); }
nav { display: flex; gap: 22px; align-items: baseline; flex-wrap: wrap; }
/* nowrap keeps "off-hours" from breaking across two lines on a phone */
nav a, .nav-btn { color: var(--ink-soft); text-transform: lowercase; white-space: nowrap; }
nav a:hover, .nav-btn:hover { color: var(--link); text-decoration: none; }
/* "bugs" is a button, not a link — it toggles Fig. 1 instead of navigating.
   These rules strip the native button chrome so it reads as a nav item. */
.nav-btn {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
}

/* ---------- hero ---------- */
.hero { padding: 72px 0 56px; }
.hero h1 {
  font-size: clamp(2.1rem, 6vw, 2.9rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.hero h1 em { font-style: italic; font-weight: 400; }
.hero p { color: var(--ink-soft); max-width: 54ch; }
.hero p + p { margin-top: 14px; }
.hero .links {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

/* signature: loss curve */
.loss { margin-top: 44px; display: flex; align-items: flex-end; gap: 14px; }
.loss svg { display: block; overflow: visible; }
.loss-path {
  fill: none;
  stroke: var(--link);
  stroke-width: 1.5;
  stroke-dasharray: 320;
  stroke-dashoffset: 320;
  animation: draw 2.4s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}
.loss-axis { stroke: var(--line); stroke-width: 1; }
.loss-dot { fill: var(--link); opacity: 0; animation: appear 0.4s ease 2.5s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes appear { to { opacity: 1; } }
.loss-caption { color: var(--ink-soft); padding-bottom: 2px; }

/* ---------- sections ---------- */
section { padding: 40px 0; border-top: 1px solid var(--line); }
.section-label {
  color: var(--ink-soft);
  font-size: 0.72rem;      /* h2 now, so cancel the UA heading size/weight */
  font-weight: 400;
  text-transform: uppercase;
  display: block;
  margin-bottom: 28px;
}

/* papers */
.paper { margin-bottom: 30px; }
.paper:last-child { margin-bottom: 0; }
.paper-title { font-size: 1.12rem; font-weight: 500; line-height: 1.4; }
.paper-title a { color: var(--ink); }
.paper-title a:hover { color: var(--link); text-decoration: none; }
.paper-meta { margin-top: 4px; color: var(--ink-soft); }
.paper-meta .venue { color: var(--link); }
.paper-note { margin-top: 6px; color: var(--ink-soft); font-size: 0.95rem; max-width: 56ch; }

/* writing list */
.post {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.post:last-child { border-bottom: none; }
.post-date { color: var(--ink-soft); flex-shrink: 0; width: 84px; }
.post-title { font-size: 1.08rem; font-weight: 500; }
.post-title a { color: var(--ink); }
.post-title a:hover { color: var(--link); text-decoration: none; }

/* ---------- article page ---------- */
article { padding: 56px 0 48px; }
.post-meta { color: var(--ink-soft); display: flex; gap: 16px; margin-bottom: 18px; }
article h1 {
  font-size: clamp(1.9rem, 5.5vw, 2.5rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 44px;
}
.prose { line-height: 1.7; }
.prose > * + * { margin-top: 1.2em; }
.prose > p:first-child em:only-child {
  color: var(--ink-soft);
  font-size: 1.1rem;
}
.prose h2 { font-size: 1.25rem; font-weight: 600; margin-top: 2em; line-height: 1.35; }
.prose h3 { font-size: 1.1rem; font-weight: 600; margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: 0.4em; }
.prose blockquote {
  border-left: 2px solid var(--link);
  padding-left: 20px;
  font-style: italic;
  color: var(--ink-soft);
}
.prose code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.82em;
  background: var(--link-wash);
  padding: 2px 6px;
  border-radius: 3px;
}
.prose pre {
  background: #F4F3EF;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 16px 18px;
  overflow-x: auto;
  line-height: 1.55;
}
.prose pre code { background: none; padding: 0; font-size: 0.78rem; }
.prose img { max-width: 100%; height: auto; }
.prose hr { border: none; text-align: center; margin: 2.4em 0; }
.prose hr::after {
  content: "· · ·";
  color: var(--ink-soft);
  letter-spacing: 0.6em;
  font-size: 0.9rem;
}

/* ---------- off-hours ---------- */
.figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.figures figure { margin: 0; }
.figures img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--line);
  display: block;
}
.figures figcaption {
  margin-top: 8px;
  color: var(--ink-soft);
  line-height: 1.5;
}
.fig-no { color: var(--link); }

.now {
  margin-top: 36px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.now-row {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 6px 0;
}
.now-row > :last-child { color: var(--ink-soft); font-size: 1rem; }
/* Stack multiple values under one label so they share a left edge */
.now-values { display: flex; flex-direction: column; gap: 2px; }
.now-label {
  color: var(--link);
  flex-shrink: 0;
  width: 84px;
  text-transform: lowercase;
}

.strip {
  margin-top: 36px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
/* Intro line above the photo strip — same top rule as .now / .changelog */
.strip-intro {
  margin: 36px 0 0;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--ink-soft);
}
.strip-intro + .strip { margin-top: 14px; }

/* Thumb size lives here — figure and img share it so captions wrap
   to the image width instead of stretching the figure to one long line. */
.strip { --thumb: 152px; }
.strip figure { margin: 0; flex-shrink: 0; width: var(--thumb); }
.strip img {
  width: var(--thumb);
  height: var(--thumb);
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--line);
  display: block;
}
.strip figcaption {
  margin-top: 6px;
  color: var(--ink-soft);
  line-height: 1.5;
  overflow-wrap: break-word;
}

@media (max-width: 540px) {
  .figures { grid-template-columns: 1fr; }
  .now-row { flex-direction: column; gap: 2px; }
  .now-label { width: auto; }
}

/* Changelog — one-line state changes, CalVer versioned */
.changelog {
  margin-top: 36px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.changelog-label {
  color: var(--ink-soft);
  text-transform: uppercase;
  display: block;
  margin-bottom: 14px;
}
.log-row {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 6px 0;
}
.log-v { color: var(--link); flex-shrink: 0; width: 84px; }
.log-row > span:last-child { color: var(--ink-soft); font-size: 1rem; }

/* ---------- footer ---------- */
/* Sticky footer. On a short page (a one-paragraph post) the footer sits at
   the bottom of the viewport instead of floating mid-screen. On a long page
   this does nothing — the content pushes it past the fold as usual.
   #wanderer is position:fixed, so it stays out of this flex flow. */
body { min-height: 100vh; display: flex; flex-direction: column; }
/* width:100% is load-bearing: as a column flex item with `margin: 0 auto`,
   .wrap would otherwise size to its content and stay 680px wide on a phone,
   pushing the page sideways. */
.wrap { flex: 1; display: flex; flex-direction: column; width: 100%; }
.wrap > footer { margin-top: auto; }

footer, .post-footer { border-top: 1px solid var(--line); padding: 28px 0 56px; color: var(--ink-soft); }
.footer-row, .post-footer-row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 540px) {
  .post { flex-direction: column; gap: 2px; }
  .post-date { width: auto; }
  .hero { padding-top: 52px; }
  nav { gap: 14px; }
}

/* Below ~430px the name plus four nav items no longer fit on one line, and
   only "bugs" would wrap — an orphan. Drop the whole nav to its own row so
   the break looks deliberate. */
@media (max-width: 430px) {
  .header-row { flex-wrap: wrap; gap: 8px 16px; }
  nav { gap: 16px; }
}