/* Design adapted from kevinywu.github.io, with the pinned sidebar from meganrichards3.github.io */
:root {
  --bg: #fdfdfd;
  --bg-rgb: 253, 253, 253;
  --text: #2c3c4c;
  --heading: #334455;
  --link: #2471a3;
  --link-hover: #f09228;
  --border: #e0e0e0;
  --hover-bg: #eef4fb;
  --code-bg: #f5f7f9;
  --muted: #888;
  --on-accent: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16191d;
    --bg-rgb: 22, 25, 29;
    --text: #d0d6dd;
    --heading: #e6ebf0;
    --link: #6cb2e6;
    --link-hover: #f5a54a;
    --border: #2e343b;
    --hover-bg: #1f262e;
    --code-bg: #1d2228;
    --muted: #8a939c;
    --on-accent: #16191d;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, Roboto, "Helvetica Neue", Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--link-hover); }

h1, h2 { color: var(--heading); line-height: 1.15; }
h2 {
  font-size: 1.4em;
  margin-top: 30px;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

p { margin: 0 0 14px; }

section { scroll-margin-top: 24px; }

/* ---------- Layout: pinned sidebar + content ---------- */
.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 56px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.sidebar {
  position: sticky;
  top: 40px;
  align-self: start;
}
.sidebar-pic {
  display: block;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
}
.sidebar-name { font-size: 1.6em; margin: 0 0 6px; }
.sidebar-subtitle { color: var(--muted); margin: 0 0 2px; }
.sidebar-email { color: var(--muted); margin: 0 0 2px; font-size: 0.92em; }
.sidebar-pronouns { color: var(--muted); margin: 0 0 14px; font-size: 0.92em; }
.sidebar-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sidebar-links li { margin: 0 0 6px; }
.sidebar-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--heading);
  font-size: 0.95em;
}
.sidebar-links a:hover { color: var(--link-hover); }
.sidebar-links i { width: 18px; text-align: center; font-size: 1.15em; }
.sidebar-sections {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 0.92em;
}
.sidebar-sections a {
  color: var(--muted);
  padding-left: 10px;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.sidebar-sections a:hover { color: var(--link-hover); }
.sidebar-sections a.active { color: var(--heading); border-left-color: var(--link); }

.content { min-width: 0; max-width: 820px; }

/* ---------- Sticky top bar (mobile only) ---------- */
.sticky-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(var(--bg-rgb), 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}
.sticky-nav.visible { transform: translateY(0); }
.sticky-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 9px 16px;
}
.sticky-name {
  font-weight: 600;
  color: var(--heading);
  font-size: 1.1em;
  white-space: nowrap;
}
.sticky-name:hover { color: var(--link-hover); }
.sticky-links {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 1.3em;
}
.sticky-links a { color: var(--heading); }
.sticky-links a:hover { color: var(--link-hover); }

/* ---------- Bio ---------- */
.bio { margin-top: 4px; }
.thrusts { margin: 0 0 14px; padding-left: 22px; }
.thrusts li { margin-bottom: 2px; }
.dog-link {
  border: none;
  background: none;
  padding: 0;
  font: inherit;
  color: var(--link);
  cursor: zoom-in;
  transition: color 0.2s;
}
.dog-link:hover { color: var(--link-hover); }
.dog-link i { font-size: 0.85em; margin-left: 2px; }

/* ---------- News ---------- */
.news-wrap { position: relative; }
.news-wrap.collapsed { max-height: 130px; overflow: hidden; }
.news-fade {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 56px;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(var(--bg-rgb), 0), var(--bg));
}
.news-wrap:not(.collapsed) .news-fade { display: none; }
.news-toggle {
  border: none;
  background: transparent;
  padding: 6px 0;
  margin-top: 4px;
  font: inherit;
  font-size: 0.9em;
  color: var(--link);
  cursor: pointer;
  transition: color 0.2s;
}
.news-toggle:hover { color: var(--link-hover); }
.news { list-style: none; padding: 0; margin: 0; }
.news li {
  display: flex;
  gap: 16px;
  padding: 3px 0;
}
.news .date {
  flex-shrink: 0;
  width: 78px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.92em;
}

/* ---------- Publications ---------- */
.pub-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 30px;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.pub-head h2 {
  margin: 0;
  padding: 0;
  border: 0;
}
.pub-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.pub-toggle button {
  border: none;
  background: transparent;
  padding: 5px 16px;
  min-width: 80px;
  font: inherit;
  font-size: 0.9em;
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.pub-toggle button.active {
  background: var(--heading);
  color: var(--on-accent);
}

.publication {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 16px;
  margin: 0 -16px;
  border-radius: 8px;
  transition: background 0.2s;
}
.publication[hidden] { display: none; }
.publication:hover { background: var(--hover-bg); }
.pub-media {
  flex-shrink: 0;
  width: 240px;
  aspect-ratio: 16 / 9;
  margin-top: 4px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #fff;
}
.pub-body { flex: 1; min-width: 0; }
.pub-title { font-weight: 700; color: var(--heading); }
.pub-title a { color: var(--link); }
.pub-title a:hover { color: var(--link-hover); }
.pub-authors { font-size: 0.95em; margin: 3px 0; }
.pub-authors .me { font-weight: 700; }
.pub-authors .eq-note { color: var(--muted); }
.pub-authors .eq-note::before { content: "\00b7"; margin: 0 6px; }
.pub-venue { font-size: 0.95em; color: var(--muted); margin-bottom: 8px; }
.pub-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.85em;
}
.pub-links > * + *::before {
  content: "/";
  color: var(--muted);
  margin: 0 8px;
}
.bib-toggle {
  border: none;
  background: none;
  padding: 0;
  font: inherit;
  color: var(--link);
  cursor: pointer;
  transition: color 0.2s;
}
.bib-toggle:hover { color: var(--link-hover); }
.bibtex {
  margin: 10px 0 0;
  padding: 12px 14px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85em;
  line-height: 1.45;
  white-space: pre-wrap;
  overflow-x: auto;
}
.bibtex[hidden] { display: none; }

/* ---------- Talks | Service ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.two-col .news .date { width: 72px; }
.nw { white-space: nowrap; }
.two-col .news-wrap.collapsed { max-height: 190px; }

/* ---------- Footer ---------- */
.footer {
  margin-top: 56px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.85em;
  color: var(--muted);
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0);
  cursor: zoom-out;
  pointer-events: none;
  transition: background-color 300ms ease;
}
.lightbox.open {
  background: rgba(0, 0, 0, 0.55);
  pointer-events: auto;
}
.lightbox img {
  max-width: min(90vw, 900px);
  max-height: 85vh;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 300ms ease, transform 300ms ease;
}
.lightbox.open img { opacity: 1; transform: scale(1); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    max-width: 860px;
    padding: 32px 16px 64px;
  }
  .sidebar {
    position: static;
    display: flex;
    align-items: flex-start;
    gap: 28px;
    padding-bottom: 24px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-pic { width: 130px; height: 130px; margin: 0; flex-shrink: 0; }
  .sidebar-name { font-size: 2.1em; margin-bottom: 4px; }
  .sidebar-links { display: inline-flex; gap: 16px; font-size: 1.5em; }
  .sidebar-links li { margin: 0; }
  .sidebar-links span { display: none; }
  .sidebar-links i { width: auto; font-size: 1em; }
  .sidebar-sections { display: none; }
  .content { max-width: none; }
  .sticky-nav { display: block; }
}
@media (max-width: 700px) {
  body { font-size: 17px; }
  .layout { padding: 24px 16px 48px; }
  .sidebar {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 14px;
  }
  .sidebar-pic { width: 150px; height: 150px; }
  .publication { flex-direction: column; }
  .pub-media { width: 100%; max-width: 400px; margin-left: auto; margin-right: auto; }
  .pub-head { flex-wrap: wrap; }
  .news li { flex-direction: column; gap: 2px; }
  .news .date, .two-col .news .date { width: auto; }
  .news-wrap.collapsed { max-height: 220px; }
  .two-col { grid-template-columns: 1fr; gap: 0; }
}
@media (max-width: 460px) {
  .sticky-name { display: none; }
  .sticky-inner { justify-content: center; }
}