/* aaron-yin.com — dossier layout, ivory & oxblood, Spectral */

:root {
  --bg: #fffdf8;
  --bg-2: #f6f1e6;
  --ink: #1a1a1a;
  --muted: #4f4b45;
  --faint: #8a847a;
  --rule: rgba(26, 26, 26, 0.13);
  --rule-strong: rgba(26, 26, 26, 0.38);
  --accent: #7a1f2b;
  --accent-ink: #5a121c;
  --accent-soft: rgba(122, 31, 43, 0.08);
  --serif: "Spectral", "Charter", "Georgia", serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --side-w: 280px;
  --gap: 72px;
  --max: 1160px;
  color-scheme: light;
}


*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga", "onum";
}
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.04;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; text-underline-offset: 0.16em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-ink); text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
b { font-weight: 600; }
i { font-style: italic; }
code { font-family: var(--mono); font-size: 0.86em; background: var(--accent-soft); padding: 0.1em 0.4em; border-radius: 3px; }
ul, ol { padding-left: 1.2em; }
h1, h2, h3 { margin: 0; font-weight: 500; line-height: 1.18; }

.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--ink); color: var(--bg); padding: 8px 12px; border-radius: 4px; }
.skip:focus { top: 12px; }

/* ---------- frame ---------- */
.page {
  position: relative; z-index: 1;
  max-width: var(--max); margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr); column-gap: var(--gap);
}
.side {
  position: sticky; top: 0; align-self: start;
  height: 100vh; height: 100dvh;
  padding: 56px 0 28px;
  display: flex; flex-direction: column; gap: 26px;
  overflow: auto; scrollbar-width: none;
}
.side::-webkit-scrollbar { display: none; }
.main { min-width: 0; padding: 0 0 28px; }

/* ---------- sidebar ---------- */
.side__portrait {
  display: block; flex-shrink: 0; width: 148px; aspect-ratio: 1; border-radius: 50%; overflow: hidden;
  box-shadow: 0 0 0 1px var(--rule), 0 18px 40px -24px rgba(0, 0, 0, 0.5);
}
.side__portrait img { width: 100%; height: 100%; object-fit: cover; }
.side__id p { margin: 0; }
.side__name { font-size: 2.05rem; font-weight: 500; letter-spacing: -0.02em; line-height: 1.02; margin: 0 0 8px; }
.side__role { color: var(--muted); }
.side__role, .side__loc { display: flex; align-items: flex-start; gap: 7px; }
.ic { width: 14px; height: 14px; margin-top: 5px; color: var(--faint); flex-shrink: 0; }
.side__note {
  margin-top: 10px !important; display: inline-block;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.02em;
  color: var(--accent-ink); background: var(--accent-soft); padding: 3px 8px; border-radius: 3px;
}
.side__loc { color: var(--muted); font-size: 0.95rem; margin-top: 4px !important; }
.side__links {
  list-style: none; margin: 0; padding: 18px 0 0; border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: 1fr 1fr; gap: 5px 12px; font-size: 0.92rem;
}
.side__stamp { margin: auto 0 0; padding-top: 18px; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--faint); }

/* ---------- top nav + folio ---------- */
.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: baseline; justify-content: space-between; gap: 24px;
  padding: 44px 0 12px; margin-bottom: 34px;
  background: var(--bg);
  border-bottom: 1px solid var(--rule-strong);
}
.top__nav { display: flex; gap: 26px; }
.top__nav a {
  color: var(--muted); font-size: 1rem; padding: 2px 0;
  border-bottom: 2px solid transparent; transition: color 0.15s, border-color 0.15s;
}
.top__nav a:hover { color: var(--ink); text-decoration: none; }
.top__nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.top__folio { margin: 0; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--faint); white-space: nowrap; }

/* ---------- pages ---------- */
.js .pg { display: none; }
.js .pg.is-active { display: block; animation: turn 0.42s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
@keyframes turn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
html:not(.js) .pg + .pg { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--rule-strong); }
.pg__next { margin: 22px 0 0; padding-top: 22px; border-top: 1px solid var(--rule); font-size: 1rem; }
.pg__next a { font-style: italic; }
.pg__next--end { color: var(--faint); }

.sec { padding: 0 0 56px; }
.sec:last-of-type { padding-bottom: 0; }
.sec__h {
  font-size: 1.55rem; font-weight: 500; letter-spacing: -0.005em;
  padding-bottom: 12px; margin-bottom: 24px; border-bottom: 1px solid var(--rule);
}
.sec__note { margin: -12px 0 22px; color: var(--faint); font-size: 0.92rem; }
.sub__h { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin: 40px 0 14px; }

/* home */
.sec--home { padding-bottom: 0; }
.home { margin: 26px 0 0; display: grid; grid-template-columns: 92px 1fr; row-gap: 14px; column-gap: 16px; }
.home dt { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); padding-top: 5px; }
.home dd { margin: 0; font-size: 0.98rem; }
.sub__h--first { margin-top: 0; }
.sec--intro { padding-bottom: 30px; }
.name__mid { font-style: italic; font-weight: 400; color: var(--muted); }
.lede { font-size: 1.3rem; line-height: 1.48; margin: 0; }
.sec--selected { padding-bottom: 60px; }
.sec--selected .sub__h { margin-top: 0; display: flex; align-items: center; gap: 12px; }
.sec--selected .sub__h::after { content: ""; flex: 1; height: 1px; background: var(--rule); }
.sel { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.sel__item { padding-left: 18px; border-left: 2px solid var(--accent); }
.sel__title { font-size: 1.08rem; line-height: 1.32; color: var(--ink); font-weight: 500; }
.sel__title:hover { color: var(--accent-ink); }
.sel__meta { margin: 4px 0 3px; font-size: 0.88rem; color: var(--muted); }
.sel__sum { margin: 0; font-size: 0.95rem; color: var(--muted); }
.sel__more { margin: 16px 0 0; font-size: 0.95rem; font-style: italic; }
.prose p { margin: 0 0 1.05em; }
.prose p:last-child { margin-bottom: 0; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; }
.btn { display: inline-block; padding: 8px 16px; border-radius: 3px; background: var(--accent); color: var(--bg); font-size: 0.95rem; border: 1px solid var(--accent); }
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: var(--bg); text-decoration: none; }
.btn--ghost { background: transparent; color: var(--accent); }
.btn--ghost:hover { background: var(--accent-soft); color: var(--accent-ink); }

/* research */
.direction { font-size: 1.12rem; line-height: 1.5; padding: 18px 22px; background: var(--bg-2); border-radius: 4px; margin-bottom: 26px !important; font-style: italic; }
.direction__label { display: block; font-family: var(--mono); font-style: normal; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.cards { display: grid; gap: 18px; }
.card { padding: 20px 22px 18px; border: 1px solid var(--rule); border-radius: 4px; background: color-mix(in srgb, var(--bg) 70%, var(--bg-2)); }
.card p { margin: 0 0 10px; font-size: 0.97rem; }
.card p:last-child { margin-bottom: 0; }
.card__h { font-size: 1.15rem; margin-bottom: 10px; }
.card__role { color: var(--muted); font-style: italic; }
.card__refs { font-size: 0.9rem; color: var(--faint); }

/* publications */
.pubs { list-style: none; margin: 0; padding: 0; }
.pubs__year { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.08em; color: var(--faint); margin: 30px 0 14px; display: flex; align-items: center; gap: 12px; }
.pubs__year::after { content: ""; flex: 1; height: 1px; background: var(--rule); }
.pubs__year:first-child { margin-top: 0; }
.pub { padding: 0 0 22px; margin: 0 0 22px; border-bottom: 1px dashed var(--rule); }
.pubs .pub:last-child { border-bottom: 0; }
.pub p { margin: 0; }
.pub__title { font-size: 1.08rem; font-weight: 500; line-height: 1.32; }
.pub__title a { color: var(--ink); }
.pub__title a:hover { color: var(--accent-ink); }
.pub__authors { margin-top: 6px !important; font-size: 0.92rem; color: var(--muted); }
.pub__venue { margin-top: 4px !important; font-size: 0.82rem; font-family: var(--mono); color: var(--faint); }
.pub__sum { margin-top: 8px !important; font-size: 0.96rem; }

/* experience */
.exp { list-style: none; margin: 0; padding: 0; }
.exp__item { display: grid; grid-template-columns: 140px 1fr; gap: 20px; padding: 0 0 24px; margin-bottom: 24px; border-bottom: 1px dashed var(--rule); }
.exp__item:last-child { border-bottom: 0; }
.exp__when { margin: 4px 0 0; font-family: var(--mono); font-size: 0.78rem; color: var(--faint); }
.exp__h { font-size: 1.15rem; }
.exp__h a { color: inherit; }
.exp__where { margin: 2px 0 8px; font-size: 0.92rem; color: var(--muted); }
.exp ul { margin: 0; padding-left: 1.1em; font-size: 0.97rem; }
.exp li + li { margin-top: 4px; }
.card--wide { max-width: none; }

/* news */
.news { list-style: none; margin: 0; padding: 0; }
.news li { display: grid; grid-template-columns: 86px 1fr; gap: 16px; padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: 0.97rem; }
.news li:last-child { border-bottom: 0; }
.news__when { font-family: var(--mono); font-size: 0.76rem; color: var(--faint); padding-top: 4px; }

/* honors */
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cols .sub__h { margin-top: 0; }
.plain { list-style: none; margin: 0; padding: 0; font-size: 0.95rem; }
.plain li + li { margin-top: 10px; }
.plain__early { color: var(--muted); font-size: 0.9rem; }

.foot { border-top: 1px solid var(--rule-strong); margin-top: 22px; padding-top: 22px; color: var(--muted); font-size: 0.9rem; }
.foot p { margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  :root { --gap: 48px; --side-w: 240px; }
  .side { padding-top: 40px; gap: 20px; }
  .side__portrait { width: 116px; }
  .lede { font-size: 1.18rem; }
  .top { padding-top: 40px; }
  .top__nav { gap: 18px; }
  .top__nav a { font-size: 0.95rem; }
}
@media (max-width: 959px) {
  .page { display: block; padding: 0 20px; }
  .home { grid-template-columns: 1fr; row-gap: 4px; }
  .home dd + dt { margin-top: 12px; }
  .side {
    position: static; height: auto; padding: 28px 0 0; gap: 10px;
    display: flex; flex-direction: column; align-items: center; text-align: center;
  }
  .side__portrait { width: 84px; }
  .side__id { display: flex; flex-direction: column; align-items: center; }
  .side__name { font-size: 1.7rem; margin-bottom: 4px; }
  .side__role, .side__loc { font-size: 0.93rem; justify-content: center; text-align: left; }
  .side__loc { margin-top: 1px !important; }
  .side__note { margin-top: 8px !important; }
  .side__stamp { display: none; }
  .full { display: none; }
  .side__links {
    border-top: 0; padding: 0; margin: 0;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 2px 0; font-size: 0.92rem;
  }
  .side__links li + li::before { content: "·"; color: var(--faint); margin: 0 9px; }
  .top {
    padding: 12px 20px 10px; margin: 18px -20px 28px;
    background: var(--bg); overflow-x: auto; scrollbar-width: none; gap: 16px;
    border-top: 1px solid var(--rule);
  }
  .top::-webkit-scrollbar { display: none; }
  .top__nav { gap: 20px; white-space: nowrap; }
  .top__nav a { font-size: 0.97rem; }
  .cols { grid-template-columns: 1fr; gap: 24px; }
  .exp__item { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 480px) {
  body { font-size: 16px; }
  .news li { grid-template-columns: 1fr; gap: 2px; }
  .cta .btn { flex: 1; text-align: center; }
  .top__folio { display: none; }
}

/* ---------- print: whole dossier ---------- */
@media print {
  body::before { display: none; }
  .js .pg { display: block; animation: none; }
  .pg + .pg { break-before: page; }
  .page { display: block; max-width: none; padding: 0; }
  .side { position: static; height: auto; display: block; padding: 0 0 16px; border-bottom: 1px solid #000; }
  .side__portrait, .top, .skip, .cta, .pg__next { display: none; }
  .side__links { display: flex; gap: 12px; border: 0; padding: 0; }
  .side__links a::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #555; }
  .sec { max-width: none; }
  a { color: #000; }
  .pub__title a::after { content: " " attr(href); font-family: monospace; font-size: 0.75em; color: #555; }
}