/* khwankim.github.io — single stylesheet.
   Near-black ground, cream serif reading text, grotesque labels, one signal-red accent.
   Figures are shown in their original colours as cream prints laid on the dark page. */

:root {
  color-scheme: dark;
  --paper: #0c0c0b;
  --plate: #d6cebc;
  --ink: #ebe5d8;
  --muted: #8f8a80;
  --rule: #26251f;
  --rule-strong: #5a574c;
  --accent: #e8542c;
  --serif: Charter, "Iowan Old Style", "Source Serif Pro", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans", system-ui, sans-serif;
  --gutter: clamp(20px, 5vw, 72px);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--paper);
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.6 var(--serif);
  font-feature-settings: "onum", "pnum";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Faint film grain over the whole page. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
  opacity: .055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 220px 220px;
}

p, h1, h2, h3, figure, dl, dd, ul { margin: 0; padding: 0; }
ul { list-style: none; }

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: color .15s ease, text-decoration-color .15s ease;
}
a:hover { color: var(--accent); text-decoration-color: currentColor; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 1px; }
::selection { background: var(--accent); color: #0c0c0b; }

[id] { scroll-margin-top: 28px; }

.skip {
  position: fixed; top: 10px; left: 12px; z-index: 20;
  transform: translateY(-200%);
  background: var(--ink); color: #0c0c0b;
  font: 15px var(--sans); padding: 10px 16px; text-decoration: none;
}
.skip:focus { transform: none; }

/* ---------- Page frame ---------- */

.page {
  display: grid;
  grid-template-columns: minmax(200px, 250px) minmax(0, 1fr);
  column-gap: clamp(48px, 8vw, 128px);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Margin column ---------- */

.margin {
  position: sticky;
  top: 0;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 48px 0 40px;
  font-family: var(--sans);
}

.name {
  font: 400 24px/1.2 var(--serif);
  letter-spacing: -.005em;
  margin: 0 0 10px;
}
.role {
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
}

.affiliation {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  width: fit-content;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.3;
}
.affiliation .ucl { width: 54px; height: auto; fill: currentColor; flex: none; }
.affiliation span { border-left: 1px solid var(--rule); padding-left: 12px; max-width: 8em; }
.affiliation:hover { color: var(--accent); }

.identity-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin-top: 18px;
  font-size: 14.5px;
}
.identity-links a { text-decoration: none; color: var(--ink); }
.identity-links a:hover { color: var(--accent); }
.identity-links .m-only { display: none; }

.index {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule-strong);
  padding-top: 12px;
  font-size: 15px;
}
.index { counter-reset: idx; }
.index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 5px 0;
  text-decoration: none;
  color: var(--muted);
}
.index a::before {
  counter-increment: idx;
  content: counter(idx, decimal-leading-zero);
  font-size: 12px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  color: var(--rule-strong);
  transition: color .15s ease;
}
.index a:hover { color: var(--ink); }
.index a[aria-current="true"] { color: var(--ink); }
.index a[aria-current="true"]::before { color: var(--accent); }

.reach {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14.5px;
  color: var(--muted);
}
.reach a { text-decoration: none; width: fit-content; }
.reach a:hover { color: var(--accent); }
.reach .cv { color: var(--ink); margin-top: 6px; }
.ext {
  font-size: 13px;
  letter-spacing: .06em;
  vertical-align: 2px;
  margin-left: 4px;
  color: var(--accent);
}

/* ---------- Content column ---------- */

.content {
  min-width: 0;
  max-width: 820px;
  padding: 48px 0 72px;
}

.intro { padding-bottom: 56px; }
.statement {
  font-size: clamp(23px, 2.2vw, 29px);
  line-height: 1.38;
  letter-spacing: -.01em;
  max-width: 23em;
  text-wrap: pretty;
}

.content { counter-reset: sec; }
section { position: relative; padding-top: 84px; }

.section-head {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 2px solid var(--ink);
  padding-top: 16px;
  margin-bottom: 14px;
  font-family: var(--sans);
}
.section-head h2 {
  position: relative;
  font: 400 30px/1.15 var(--serif);
  letter-spacing: -.015em;
  color: var(--ink);
  text-wrap: balance;
}
.unnumbered .section-head h2::before { display: none; }
.unnumbered { padding-top: 56px; }
.unnumbered .section-head { border-top-width: 1px; border-top-color: var(--rule-strong); }
.unnumbered .section-head h2 { font-size: 24px; }
.section-head h2::before {
  counter-increment: sec;
  content: counter(sec, decimal-leading-zero);
  position: absolute;
  right: 100%;
  top: -6px;
  margin-right: clamp(18px, 2.4vw, 34px);
  font: 300 44px/1 var(--serif);
  font-variant-numeric: tabular-nums lining-nums;
  color: var(--accent);
  letter-spacing: -.03em;
}
.section-head > a { font-size: 14.5px; color: var(--muted); text-decoration: none; padding-bottom: 5px; }
.section-head > a:hover { color: var(--accent); }
.section-note {
  font-size: 14.5px;
  color: var(--muted);
  flex-basis: 100%;
  margin-top: 2px;
}

/* ---------- Entries ---------- */

.paper {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42%;
  column-gap: clamp(28px, 4vw, 48px);
  align-items: start;
  padding: 30px 0 34px;
  border-top: 1px solid var(--rule);
}
.paper:first-of-type { border-top: 0; padding-top: 18px; }
.paper.no-figure { grid-template-columns: minmax(0, 1fr); }
.paper.no-figure .paper-copy { max-width: 62ch; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  font: 14.5px/1.5 var(--sans);
  color: var(--muted);
  margin-bottom: 10px;
}
.meta .venue { color: var(--ink); }
.meta .status::before { content: "·"; margin-right: 10px; color: var(--muted); }

.paper h3 {
  font: 400 22px/1.32 var(--serif);
  letter-spacing: -.008em;
  text-wrap: pretty;
}
.paper h3 a { text-decoration: none; }
.paper h3 a:hover { color: var(--accent); }

.authors {
  font: 15px/1.6 var(--sans);
  color: var(--muted);
  margin-top: 8px;
}
.authors strong { font-weight: 400; color: var(--ink); }
.authors .note { display: block; font-size: 14px; }

.description {
  margin-top: 12px;
  max-width: 56ch;
  color: var(--ink);
}

.recognition {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid var(--accent);
  font: 14.5px/1.55 var(--sans);
  color: var(--muted);
  max-width: 54ch;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  margin-top: 16px;
  font: 14.5px/1.5 var(--sans);
}
.links a { text-decoration-color: var(--rule-strong); }
.links a:hover { color: var(--accent); }

.project { padding: 24px 0 26px; }
.project h3 { font-size: 20px; }
.project .authors { margin-top: 6px; }
.project .links { margin-top: 10px; }

/* ---------- Figures ---------- */

.figure {
  min-width: 0;
  padding-top: 4px;
}
.figure > a {
  display: block;
  width: fit-content;
  max-width: 100%;
  margin-left: auto;
  padding: 10px;
  background: var(--plate);
  transition: background-color .2s ease;
}
.figure img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 240px;
  mix-blend-mode: multiply;
}
.figure.tall img { max-height: 300px; }
.project .figure img { max-height: 190px; }
.figure > a:hover { background: #ebe4d3; }
.figure > a:focus-visible { outline-offset: 4px; }

.figure figcaption {
  margin-top: 8px;
  font: 14px/1.45 var(--sans);
  color: var(--muted);
  text-align: right;
}
.figure figcaption a { text-decoration-color: var(--rule-strong); white-space: nowrap; color: var(--ink); }

.figure-note {
  margin-top: 26px;
  font: 14.5px/1.5 var(--sans);
  color: var(--muted);
}

/* ---------- CV rows ---------- */

.cv .sub {
  font: 400 13px/1.4 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 34px 0 6px;
}
.cv .sub:first-of-type { margin-top: 16px; }

.rows { margin-top: 10px; }
.row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  column-gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}
.rows:not(.years) .row:first-child { border-top: 0; }
.row dt {
  font: 300 22px/1.2 var(--serif);
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: -.02em;
  color: var(--muted);
  padding-top: 1px;
}
.row dd strong { font-weight: 400; }
.row dd span { display: block; font: 14.5px/1.5 var(--sans); color: var(--muted); margin-top: 2px; }
.years .row dd li { padding: 2px 0; }
.years .row dd li + li { border-top: 1px dotted var(--rule-strong); }

.aside-note {
  margin-top: 16px;
  font: 14.5px/1.55 var(--sans);
  color: var(--muted);
  max-width: 54ch;
}
.service { max-width: 60ch; margin-top: 8px; }

/* ---------- Colophon ---------- */

.colophon {
  margin-top: 96px;
  padding: 34px 36px 30px;
  background: var(--accent);
  color: #1a0d08;
  font: 15px/1.6 var(--sans);
}
.contact-line {
  font: 400 clamp(26px, 3vw, 38px)/1.15 var(--serif);
  letter-spacing: -.02em;
  color: #0c0c0b;
  margin-bottom: 8px;
  overflow-wrap: anywhere;
}
.contact-line a { text-decoration-color: rgba(12,12,11,.35); }
.contact-line a:hover { color: #0c0c0b; text-decoration-color: #0c0c0b; }
.colophon .small { margin-top: 28px; font-size: 14px; opacity: .85; }
.colophon a { color: inherit; text-decoration: none; }
.colophon a:hover { color: #0c0c0b; text-decoration: underline; }
::selection { background: var(--ink); color: #0c0c0b; }

/* ---------- Layout breakpoints ---------- */

@media (max-width: 1040px) {
  .page { grid-template-columns: 180px minmax(0, 1fr); column-gap: 44px; }
  .paper { grid-template-columns: minmax(0, 1fr) 40%; }
  .section-head h2::before { position: static; margin: 0 14px 0 0; font-size: 30px; line-height: 1; }
}

@media (max-width: 780px) {
  :root { --gutter: 20px; }
  [id] { scroll-margin-top: 64px; }
  .page {
    display: block;
    padding: 0 var(--gutter);
  }
  .margin {
    position: static;
    min-height: 0;
    gap: 0;
    padding: 26px 0 0;
  }
  .identity {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "name logo" "role logo" "links links";
    column-gap: 16px;
    align-items: start;
  }
  .name { grid-area: name; font-size: 22px; margin-bottom: 4px; }
  .role { grid-area: role; }
  .affiliation {
    grid-area: logo;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    margin-top: 2px;
    text-align: right;
    font-size: 12.5px;
    line-height: 1.25;
  }
  .affiliation .ucl { width: 48px; }
  .affiliation span { border-left: 0; padding-left: 0; max-width: 7em; }
  .identity-links { grid-area: links; margin-top: 18px; gap: 4px 16px; color: var(--muted); }
  .identity-links a { color: var(--muted); }
  .identity-links a:first-child { color: var(--ink); }
  .identity-links .m-only { display: inline; }

  .index {
    position: sticky;
    top: 0;
    z-index: 20;
    margin: 22px calc(-1 * var(--gutter)) 0;
    padding: 0 var(--gutter);
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0 22px;
    overflow-x: auto;
    scrollbar-width: none;
    background: var(--paper);
    border-top: 1px solid var(--rule-strong);
    border-bottom: 1px solid var(--rule);
    font-size: 14.5px;
  }
  .index::-webkit-scrollbar { display: none; }
  .index { -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 36px), transparent); mask-image: linear-gradient(to right, #000 calc(100% - 36px), transparent); }
  .index a { flex: none; padding: 13px 0 12px; gap: 6px; }
  .index a::before { font-size: 11.5px; }
  .index a[aria-current="true"] { box-shadow: inset 0 -2px 0 var(--accent); }
  .reach { display: none; }

  .content { padding: 30px 0 48px; max-width: none; }
  .intro { padding-bottom: 20px; }
  .statement { font-size: 22px; line-height: 1.36; }
  section { padding-top: 52px; }
  .unnumbered { padding-top: 40px; }
  .section-head { padding-top: 12px; margin-bottom: 10px; }
  .section-head h2 { font-size: 25px; }
  .unnumbered .section-head h2 { font-size: 21px; }
  .section-head h2::before { position: static; margin: 0 10px 0 0; font-size: 25px; line-height: 1; }

  .paper { grid-template-columns: minmax(0, 1fr); row-gap: 14px; padding: 22px 0 24px; }
  .paper:first-of-type { padding-top: 14px; }
  .paper .figure { padding-top: 2px; }
  .figure > a { margin-left: 0; padding: 8px; }
  .figure img, .figure.tall img, .project .figure img { max-height: 200px; }
  .figure figcaption { text-align: left; }
  .paper h3 { font-size: 20px; }
  .project h3 { font-size: 19px; }
  .project { padding: 20px 0 22px; }
  .description { font-size: 17.5px; }

  .cv .sub { margin-top: 26px; }
  .row { grid-template-columns: 64px minmax(0, 1fr); column-gap: 12px; padding: 12px 0; }
  .row dt { font-size: 18px; }
  .colophon {
    margin: 52px calc(-1 * var(--gutter)) 0;
    padding: 26px var(--gutter) 24px;
  }
  .contact-line { font-size: 24px; }
}

@media (max-width: 400px) {
  .index { gap: 0 18px; font-size: 14px; }
}

@media (max-height: 660px) and (min-width: 781px) {
  .margin { position: static; min-height: 0; }
}

/* ---------- Print ---------- */

@media print {
  :root { color-scheme: light; --paper: #fff; --ink: #111; --muted: #333; --rule: #bbb; --rule-strong: #111; --plate: #fff; }
  body::before { display: none; }
  .colophon { background: none; color: #111; border-top: 1px solid #111; padding: 20px 0 0; }
  .section-head h2::before { position: static; margin: 0 12px 0 0; font-size: 24px; }
  .page { display: block; padding: 0; }
  .margin { position: static; min-height: 0; }
  .index, .skip { display: none; }
  .paper, .row { break-inside: avoid; }
  .figure img { mix-blend-mode: normal; }
  a { text-decoration: none; }
}