/* ------------------------------------------------------------------
   In Kyu Lee — personal site
   One stylesheet, no framework, no web fonts.
   ------------------------------------------------------------------ */

:root {
  --bg:        #fdfdfc;
  --fg:        #1c1c1f;
  --muted:     #5c5c64;
  --faint:     #737380;
  --rule:      #e6e5e0;
  --underline: #cbcac4;
  --panel:     #f4f3ef;
  --accent:    #2f6f9f;
  --measure:   800px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #131416;
    --fg:        #e7e6e3;
    --muted:     #a2a2a9;
    --faint:     #85858c;
    --rule:      #2a2b2f;
    --underline: #43444a;
    --panel:     #1b1c1f;
    --accent:    #8ab8dc;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Apple Color Emoji", sans-serif;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 3rem;
}

/* --- Links ------------------------------------------------------- */

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--underline);
  text-underline-offset: 2px;
  transition: color .12s ease, text-decoration-color .12s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- Headings ---------------------------------------------------- */

h1 {
  margin: 0 0 .4rem;
  font-size: 2.05rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.022em;
  text-wrap: balance;
}

h2 {
  margin: 3.75rem 0 1.35rem;
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 1rem;
  font-weight: 600;
  /* tracking comes down as the size goes up, or uppercase starts to shout */
  letter-spacing: .08em;
  text-transform: uppercase;
}

h3 {
  margin: 2rem 0 .75rem;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: -.005em;
}

p { margin: 0 0 1rem; text-wrap: pretty; }

/* --- Header ------------------------------------------------------ */

.hero {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
}

.hero-text { flex: 1 1 auto; min-width: 0; }

.role {
  margin: 0;
  color: var(--muted);
}

.contact {
  margin: .9rem 0 1.6rem;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.9;
}

.contact .sep { margin: 0 .5rem; color: var(--underline); }

.portrait {
  flex: 0 0 auto;
  width: 196px;
  align-self: flex-start;
}

.portrait img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 6px;
}

.bio { color: var(--fg); }

/* --- Dated lists (experience, teaching, awards, talks) ----------- */

ul.list {
  margin: 0;
  padding: 0;
  list-style: none;
}

ul.list > li {
  margin: 0 0 1.15rem;
}

/* Entries without a description line sit closer together. */
ul.list > li:not(:has(p + p)) { margin-bottom: .6rem; }

ul.list > li::after {
  content: "";
  display: table;
  clear: both;
}

ul.list > li > p { margin: 0; }

ul.list > li > p + p {
  clear: right;
  margin-top: .2rem;
  color: var(--muted);
  font-size: .94rem;
}

ul.list ul {
  margin: .3rem 0 0;
  padding: 0 0 0 1.1rem;
  color: var(--muted);
  font-size: .94rem;
}

ul.list ul li { margin: .15rem 0; }

.yr {
  float: right;
  margin-left: 1.25rem;
  color: var(--faint);
  font-size: .85rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* --- Plain lists ------------------------------------------------- */

main ul:not(.list) {
  margin: 0 0 1rem;
  padding-left: 1.15rem;
}

main ul:not(.list) li { margin: .3rem 0; }

/* --- Publications ------------------------------------------------ */

.pub {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin: 0 0 1.75rem;
}

.pub-thumb {
  flex: 0 0 auto;
  width: 150px;
  height: 106px;
  padding: 5px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 5px;
}

/* contain, not cover: figures are letterboxed rather than cropped,
   so any aspect ratio drops in without losing part of the panel. */
.pub-thumb img,
.pub-thumb video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pub-body { min-width: 0; }

.pub-body > p { margin: 0; }

.pub-body > p:first-child {
  font-weight: 600;
  letter-spacing: -.005em;
  text-wrap: pretty;
}

/* Titles are already the loudest thing in the row — no underline until hover. */
.pub-body > p:first-child a { text-decoration-color: transparent; }
.pub-body > p:first-child a:hover,
.pub-body > p:first-child a:focus-visible { text-decoration-color: var(--accent); }

.pub-body > p + p {
  margin-top: .3rem;
  color: var(--muted);
  font-size: .92rem;
}

/* --- Footer ------------------------------------------------------ */

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: 4.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  color: var(--faint);
  font-size: .86rem;
  line-height: 1.7;
}

footer p { margin: 0; }
footer .colophon { text-align: right; }

/* --- Narrow screens ---------------------------------------------- */

@media (max-width: 680px) {
  .wrap { padding: 2.75rem 1.25rem 2.5rem; }

  h1 { font-size: 1.75rem; }
  h2 { margin-top: 2.75rem; }

  .hero {
    flex-direction: column-reverse;
    align-items: stretch;
    gap: 1.5rem;
  }

  .portrait { width: 148px; }

  .yr {
    float: none;
    display: block;
    margin: 0 0 .1rem;
  }

  .pub { gap: 1rem; }
  .pub-thumb { width: 118px; height: 84px; }

  footer { flex-direction: column; }
  footer .colophon { text-align: left; }
}

/* Below this width the thumbnail would squeeze titles into a column
   two or three words wide, so it moves above the text instead. */
@media (max-width: 560px) {
  .pub {
    flex-direction: column;
    gap: .8rem;
  }

  .pub-thumb { width: 168px; height: 112px; }
}

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

@media print {
  :root {
    --bg: #fff; --fg: #000; --muted: #333; --faint: #555;
    --rule: #ccc; --underline: #ccc; --panel: #fff; --accent: #000;
  }
  .wrap { max-width: none; padding: 0; }
  a { text-decoration: none; }
  .pub, ul.list > li { break-inside: avoid; }
  h2 { break-after: avoid; }
}

/* --- Skills ------------------------------------------------------ */

p.skills { margin: 0 0 .4rem; }
p.skills strong { font-weight: 600; }