/* ===== Theme ===== */
:root {
  --bg: #ffffff;
  --surface: #f5f5f7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --border: #d2d2d7;
  --oral: #bf4800;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html.dark {
  --bg: #000000;
  --surface: #161617;
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --accent: #2997ff;
  --accent-hover: #4aa8ff;
  --border: #424245;
  --oral: #ff9f4a;
}

* { box-sizing: border-box; }

html { color-scheme: light; }
html.dark { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.022em;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Layout ===== */
.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 22px;
}

/* ===== Theme toggle ===== */
.theme-toggle {
  position: fixed;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  color: var(--text);
  cursor: pointer;
  z-index: 10;
  transition: opacity 0.2s ease;
}
.theme-toggle:hover { opacity: 0.7; }
.icon-sun { display: none; }
html.dark .icon-sun { display: block; }
html.dark .icon-moon { display: none; }

/* ===== Intro ===== */
.intro {
  display: grid;
  /* name block lines up with the publication videos (360px), the paragraph
     with the publication text, and the photo sits at the far right */
  grid-template-columns: 360px minmax(0, 1fr) 210px;
  grid-template-areas: "name bio photo";
  column-gap: 28px;
  align-items: center;
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
}

/* Let the photo and the name block sit directly in the intro grid */
.intro-id { display: contents; }

.intro-name { grid-area: name; text-align: center; }
.intro-bio { grid-area: bio; }
.intro-photo { grid-area: photo; }

.intro-photo {
  position: relative;
  flex-shrink: 0;
  width: 210px;
  height: 270px;
  border-radius: 22px;
  overflow: hidden;
  background: var(--surface);
}
.intro-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro h1 {
  margin: 0;
  font-size: 48px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.tagline {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.01em;
}

/* Looks like plain text until hovered */
.tagline a { color: inherit; }
.tagline a:hover { color: var(--accent); text-decoration: none; }

.intro-bio {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: -0.01em;
}
.intro-bio p { margin: 0 0 12px; }
.intro-bio p:last-child { margin-bottom: 0; }

.links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.links-row {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.links a {
  padding: 7px 16px;
  border-radius: 980px;
  font-size: 15px;
  color: var(--accent);
  border: 1px solid var(--accent);
  transition: background 0.2s ease, color 0.2s ease;
}
.links a:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
  text-decoration: none;
}

/* ===== Publications ===== */
.pubs h2 {
  margin: 28px 0 18px;
  font-size: 28px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0;
}

/* Every video has the same width (that of the first paper's video), with
   its natural height. Shorter text is centered against the video; when the
   text is taller, the video stays top-aligned with it. */
.pub {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 28px;
  margin-bottom: 24px;
}

.pub-media { align-self: start; }
.pub-body { align-self: center; }

.pub-media video,
.pub-media img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.pub-title {
  display: block;
  font-size: 18px;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--text);
  margin-bottom: 4px;
}
.pub-title:hover { color: var(--accent); text-decoration: none; }

.pub-authors,
.pub-venue {
  font-size: 14px;
  line-height: 1.45;
  color: var(--muted);
  letter-spacing: -0.016em;
}

.pub-authors a { color: inherit; }
.pub-authors a:hover { color: var(--accent); text-decoration: none; }
.pub-authors strong { color: var(--text); font-weight: 600; }
.pub-authors .note { display: block; font-size: 12px; }

.pub-venue { margin-top: 0; }

.oral {
  margin-left: 6px;
  color: var(--oral);
  font-weight: 600;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 6px 0;
}

.pub-links a {
  font-size: 14px;
}
.pub-links a::after {
  content: ' \203A';
}

.pub-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}

/* ===== Footer ===== */
.footer {
  margin-top: 64px;
  padding: 18px 0 32px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: -0.01em;
}

/* ===== Small screens ===== */
@media (max-width: 734px) {
  .intro { grid-template-columns: 120px 1fr; grid-template-areas: "photo name" "bio bio"; column-gap: 18px; row-gap: 24px; padding: 64px 0 32px; }
  .intro-name { text-align: left; }
  .links { align-items: flex-start; }
  .links-row { justify-content: flex-start; gap: 6px; }
  .links a { padding: 5px 10px; font-size: 13px; }
  .intro-photo { width: 120px; height: 156px; border-radius: 16px; }
  .intro h1 { font-size: 30px; }
  .tagline { font-size: 14px; }
  .intro-bio { font-size: 15px; }
  .pubs h2 { font-size: 24px; }
  .pub { grid-template-columns: 1fr; gap: 14px; }
}