/*
 * Colors are sampled from the header photo (PIA24542): the sky, the
 * regolith, and the rover's arm.
 */
:root {
  --sky: #cfb494;
  --paper: #f6f1ea;
  --ink: #2b2620;
  --muted: #6d6152;
  --rule: #ddd2c3;
  --link: #8a4b2a;
  --link-underline: #c9a27e;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Charter, Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-padding-top: 1rem; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.6 var(--serif);
  font-variant-numeric: oldstyle-nums;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--link);
  text-decoration-color: var(--link-underline);
  text-underline-offset: 0.15em;
}
a:hover { text-decoration-color: currentColor; }

img, video { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { font-weight: normal; margin: 0; }

/* Masthead: the text sits on the same color as the photo's sky, so the
   photo continues straight up into it. */
.masthead { background: var(--sky); }

.masthead-text {
  max-width: 64rem;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 1.5rem;
}

.masthead h1 {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.masthead-text > p {
  margin: 0.4rem 0 1.25rem;
  font-size: 1.15rem;
}

.masthead nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.4rem;
}

.masthead nav a {
  color: var(--ink);
  text-decoration-color: rgb(43 38 32 / 0.35);
}
.masthead nav a:hover { text-decoration-color: var(--ink); }

.hero { margin: 0; background: var(--paper); }
.hero picture { display: block; }

.hero img {
  width: 100%;
  max-height: 78vh;
  object-fit: cover;
  /* On wide windows the height cap crops the photo. The mast head is about
     12% from the top, so take most of the crop off the bottom. */
  object-position: 50% 15%;
}

.hero figcaption {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0.6rem 1.5rem 0;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (max-width: 700px) {
  .masthead-text { padding-top: 2.25rem; }
  .hero img {
    aspect-ratio: 4 / 3;
    max-height: none;
    object-position: 64% 60%;
  }
}

/* Body: section label on the left, content on the right. */
main {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 2rem;
}

.row {
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  gap: 0 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule);
}
.row:first-child { border-top: 0; }

.row > h2 {
  font-size: 1.05rem;
  font-variant: small-caps;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--muted);
  padding-top: 0.1rem;
}

@media (max-width: 700px) {
  .row { grid-template-columns: 1fr; padding: 2rem 0; }
  .row > h2 { margin-bottom: 1rem; }
}

p { margin: 0 0 1rem; }

ul { margin: 0 0 1rem; padding-left: 1.1rem; }
li { margin-bottom: 0.35rem; }
li::marker { color: var(--muted); }

/* About */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 13rem;
  gap: 2.5rem;
  align-items: start;
}

.portrait { margin: 0.35rem 0 0; }
.portrait img { border: 1px solid var(--rule); }
.portrait figcaption {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.8rem;
}

/* Stack before the portrait squeezes the text column next to the
   section label. */
@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; gap: 1rem; }
  .portrait { max-width: 13rem; }
}

/* Work entries: title on the left, dates on the right. */
.entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 1.5rem;
  margin-bottom: 2rem;
}
.entry:last-child { margin-bottom: 0; }
.entry > * { grid-column: 1 / -1; }
.entry h3 {
  grid-column: 1;
  grid-row: 1;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.entry .when {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  color: var(--muted);
  font-variant-numeric: lining-nums tabular-nums;
  font-size: 0.95rem;
  white-space: nowrap;
}
.entry .roles { color: var(--muted); font-style: italic; }
.entry > :last-child { margin-bottom: 0; }

/* Figures from papers and project pages, inside work entries. */
.shot { margin: 0.25rem 0 1rem; }
.shot img, .shot video { border: 1px solid var(--rule); }
.shot figcaption {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1.2rem;
  font-size: 0.95rem;
}

@media (max-width: 520px) {
  .entry { grid-template-columns: 1fr; }
  .entry .when { grid-column: 1; grid-row: 1; }
  .entry h3 { grid-row: 2; }
}

/* Publications */
.pubs h3 {
  font-size: 1rem;
  font-weight: 600;
  font-variant-numeric: lining-nums;
  margin: 1.75rem 0 0.5rem;
}
.pubs h3:first-child { margin-top: 0; }

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

.pubs li {
  margin-bottom: 0.8rem;
  padding-left: 1.25rem;
  text-indent: -1.25rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.pubs b { font-weight: 600; }

/* Open source */
.repos {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.repos th {
  text-align: left;
  font-weight: normal;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding: 0 1rem 0.4rem 0;
  border-bottom: 1px solid var(--rule);
}
.repos td {
  padding: 0.45rem 1rem 0.45rem 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.repos td:last-child, .repos th:last-child { padding-right: 0; white-space: nowrap; }
.repos td:first-child { white-space: nowrap; }

@media (max-width: 600px) {
  .repos thead { display: none; }
  .repos tr { display: block; padding: 0.5rem 0; border-bottom: 1px solid var(--rule); }
  .repos td { display: inline; border: 0; padding: 0; }
  .repos td:nth-child(2) { display: block; }
  .repos td:last-child { color: var(--muted); }
  .repos td:last-child::before { content: "· "; }
}

/* Awards */
.awards {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
}
.awards li {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  margin-bottom: 0.45rem;
}
.awards span {
  color: var(--muted);
  font-variant-numeric: lining-nums tabular-nums;
}

/* Older publications and awards, collapsed by default. */
.earlier { margin-top: 1.75rem; }
.earlier summary {
  cursor: pointer;
  color: var(--link);
  font-size: 0.95rem;
  font-variant-numeric: lining-nums;
}
.earlier[open] summary { margin-bottom: 1rem; }
.pubs .earlier summary + h3 { margin-top: 0; }
.awards + .earlier { margin-top: 0.8rem; }

footer {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
}
footer p { margin: 0; }