/* One column on a two-track grid: a narrow rail for metadata (photo, section numbers, dates, venues)
   and the text beside it. Serif display type, sans body, mono metadata, hairline rules and a single
   discreet blue. Dark mode follows the system setting. */

:root {
  --page: #fcfcfb;
  --bar: rgb(252 252 251 / .82);
  --ink: #111113;
  --ink-2: #2e2e33;
  --ink-3: #5d5d65;
  --muted: #85858c;
  --hairline: #e6e6e2;
  --accent: #3a70c7;
  --accent-line: rgb(58 112 199 / .35);
  --accent-wash: rgb(58 112 199 / .07);

  --serif: "Lora", Georgia, serif;
  --sans: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --rail: 6.5rem;
  --gap: 1.5rem;
  --col: 45rem;      /* rail + gap + text */
  --gutter: 1.5rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0e0e10;
    --bar: rgb(14 14 16 / .8);
    --ink: #f3f3f1;
    --ink-2: #d2d2cf;
    --ink-3: #a0a0a7;
    --muted: #77777f;
    --hairline: #242428;
    --accent: #6f9ff3;
    --accent-line: rgb(111 159 243 / .4);
    --accent-wash: rgb(111 159 243 / .1);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--page); color: var(--ink-2);
  font: 400 1rem/1.65 var(--sans);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
}
img { max-width: 100%; }
::selection { background: var(--accent-line); }

a {
  color: var(--ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .22em;
  text-decoration-color: var(--accent-line); transition: color .15s, text-decoration-color .15s, border-color .15s, background-color .15s;
}
a:hover { color: var(--accent); text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------------------------------------------------------------- top bar */
.bar {
  position: sticky; top: 0; z-index: 10; background: var(--bar);
  -webkit-backdrop-filter: saturate(1.5) blur(14px); backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.bar-inner {
  max-width: calc(var(--col) + 2 * var(--gutter)); height: 3.5rem; margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
}
.wordmark {
  display: inline-flex; align-items: center; gap: .6rem;
  font: 600 .9375rem/1 var(--sans); letter-spacing: -.01em; color: var(--ink); text-decoration: none;
}
.wordmark::before { content: ""; width: .45rem; height: .45rem; border-radius: 50%; background: var(--accent); }
.wordmark:hover { color: var(--ink); }
.bar nav { display: flex; gap: 1.5rem; }
.bar nav a { font: 500 .8125rem/1 var(--sans); color: var(--ink-3); text-decoration: none; }
.bar nav a:hover { color: var(--accent); }

/* ---------------------------------------------------------------- page */
.page { max-width: calc(var(--col) + 2 * var(--gutter)); margin: 0 auto; padding: 5rem var(--gutter) 0; counter-reset: section; }

.hero { display: grid; grid-template-columns: var(--rail) 1fr; column-gap: var(--gap); align-items: center; }
.avatar {
  display: block; width: var(--rail); height: var(--rail); border-radius: 50%; object-fit: cover;
  background: var(--hairline); box-shadow: 0 0 0 1px var(--hairline);
}
.eyebrow { margin: 0 0 .6rem; font: 500 .75rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.eyebrow a { color: inherit; text-decoration: none; }
.eyebrow a:hover { text-decoration: underline; }
h1 { margin: 0; font: 400 clamp(2.5rem, 7vw, 3.25rem)/1.05 var(--serif); letter-spacing: -.022em; color: var(--ink); }
.links { display: flex; flex-wrap: wrap; gap: .35rem 1.25rem; margin: 1.1rem 0 0; padding: 0; list-style: none; font: 400 .8125rem/1.5 var(--mono); color: var(--ink-3); }
.links a { color: var(--ink-3); text-decoration: none; }
.links a::after { content: "\2009↗"; content: "\2009↗" / ""; color: var(--muted); }
.links a:hover, .links a:hover::after { color: var(--accent); }

.intro { margin: 2.75rem 0 0 calc(var(--rail) + var(--gap)); font-size: 1.125rem; line-height: 1.7; text-wrap: pretty; }

/* ---------------------------------------------------------------- sections */
h2 {
  display: grid; grid-template-columns: var(--rail) 1fr; column-gap: var(--gap); align-items: baseline;
  margin: 5rem 0 1.25rem; font: 400 1.625rem/1.2 var(--serif); letter-spacing: -.012em; color: var(--ink);
}
h2::before {
  counter-increment: section; content: counter(section, decimal-leading-zero);
  font: 500 .75rem/1 var(--mono); letter-spacing: .06em; color: var(--accent);
}

/* News: a markdown list in index.md whose items start with a bold date, which sits in the rail. */
.news { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--hairline); }
.news li { position: relative; margin: 0; padding: 1rem 0 1rem calc(var(--rail) + var(--gap)); border-top: 1px solid var(--hairline); text-wrap: pretty; }
.news li > strong:first-child {
  position: absolute; left: 0; top: calc(1rem + 1px); width: var(--rail);
  font: 500 .75rem/1.65rem var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--muted);
}
.news strong { font-weight: 600; color: var(--ink); white-space: nowrap; }

/* Publications: rendered from _data/publications.yml by _includes/publications.html. */
.pubs { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--hairline); }
.pub { display: grid; grid-template-columns: var(--rail) 1fr; column-gap: var(--gap); padding: 1.5rem 0; border-top: 1px solid var(--hairline); }
.pub-meta { margin: 0; padding-top: .35rem; font: 500 .75rem/1.5 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.pub-venue { display: block; color: var(--accent); }
.pub-note { display: block; color: var(--muted); }
.pub-title { margin: 0 0 .45rem; font: 500 1.1875rem/1.35 var(--serif); letter-spacing: -.006em; color: var(--ink); text-wrap: pretty; }
.pub-title a { color: inherit; text-decoration: none; }
.pub-title a:hover { color: var(--accent); }
.pub-authors { margin: 0 0 .9rem; font-size: .9375rem; line-height: 1.55; color: var(--ink-3); }
.pub-authors strong { font-weight: 600; color: var(--ink); }
.pub-links { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; }
.pub-links a {
  padding: .4rem .7rem; border: 1px solid var(--hairline); border-radius: 999px;
  font: 500 .75rem/1 var(--mono); color: var(--ink-2); text-decoration: none;
}
.pub-links a::after { content: "\2009↗"; content: "\2009↗" / ""; color: var(--muted); }
.pub-links a:hover { color: var(--accent); border-color: var(--accent-line); background: var(--accent-wash); }
.pub-links a:hover::after { color: var(--accent); }
.pubs-note { margin: .9rem 0 0 calc(var(--rail) + var(--gap)); font-size: .8125rem; color: var(--muted); }
.pubs-note a { color: var(--ink-3); }

/* ---------------------------------------------------------------- footer */
.footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1.5rem;
  margin-top: 6rem; padding: 1.5rem 0 3rem; border-top: 1px solid var(--hairline);
  font: 400 .75rem/1.5 var(--mono); color: var(--muted);
}

/* ---------------------------------------------------------------- narrow screens: the rail folds into the text */
@media (max-width: 640px) {
  .page { padding-top: 3rem; }
  .bar nav { gap: 1.1rem; }
  .hero { grid-template-columns: 1fr; row-gap: 1.4rem; }
  .avatar { width: 5.5rem; height: 5.5rem; }
  .intro { margin-left: 0; margin-top: 2rem; font-size: 1.0625rem; }
  h2 { display: flex; gap: .8rem; margin-top: 4rem; font-size: 1.5rem; }
  .news li { padding-left: 0; }
  .news li > strong:first-child { position: static; display: block; width: auto; line-height: 1.5; margin-bottom: .3rem; }
  .pub { grid-template-columns: 1fr; row-gap: .5rem; }
  .pub-meta { padding-top: 0; }
  .pub-venue, .pub-note { display: inline; }
  .pub-note::before { content: "· "; }
  .pubs-note { margin-left: 0; }
}