/* ===========================================================================
   James Pritts — academic homepage
   Hand-written, dependency-free. No Bootstrap, no jQuery, no CDN.
   =========================================================================== */

:root {
  --serif: "Iowan Old Style", "Palatino Linotype", "URW Palladio L", Palatino,
    Charter, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Noto Sans", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", ui-monospace, Menlo,
    Consolas, monospace;

  /* light theme */
  --bg: #ffffff;
  --surface: #f7f8fa;
  --text: #1b1d21;
  --muted: #6b7280;
  --border: #e6e8ec;
  --accent: #2f6690;
  --accent-soft: rgba(47, 102, 144, 0.1);

  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --surface: #1e2128;
    --text: #e6e8ec;
    --muted: #9aa1ac;
    --border: #2b2f38;
    --accent: #78aede;
    --accent-soft: rgba(120, 174, 222, 0.14);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 96px;
}

/* ---- links ---- */
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* ---- navigation ---- */
nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
nav .nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  font-size: 0.9rem;
}
nav a {
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.01em;
}
nav a:hover { color: var(--accent); text-decoration: none; }

/* ---- header ---- */
header.hero {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 56px 0 8px;
}
header.hero img.avatar {
  width: 132px;
  height: 132px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
header.hero .name {
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
header.hero .affil {
  color: var(--muted);
  font-size: 1.02rem;
  margin: 0;
}
header.hero .affil span { white-space: nowrap; }

/* ---- social row ---- */
.social {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 20px 0 4px;
}
.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--muted);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.social svg { width: 19px; height: 19px; display: block; }

/* ---- sections ---- */
section { margin-top: 52px; }
h2 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 64px;
}
p { margin: 0 0 1em; }

/* ---- news ---- */
ul.news {
  list-style: none;
  margin: 0;
  padding: 0;
}
ul.news li {
  display: flex;
  gap: 16px;
  padding: 8px 0;
}
ul.news .date {
  flex: 0 0 92px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.92rem;
  padding-top: 1px;
}
ul.news .item { flex: 1; }

/* ---- publications ---- */
.pub {
  display: flex;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.pub:last-child { border-bottom: none; }
.pub .thumb {
  flex: 0 0 150px;
}
.pub .thumb img {
  width: 150px;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
}
.pub .meta { flex: 1; min-width: 0; }
.pub .title {
  font-weight: 600;
  font-size: 1.02rem;
  margin: 0 0 3px;
  line-height: 1.35;
}
.pub .authors { color: var(--text); font-size: 0.95rem; margin: 0; }
.pub .venue { color: var(--muted); font-size: 0.92rem; font-style: italic; }
.pub .me { font-weight: 700; }
.pub .award {
  display: inline-block;
  margin-top: 2px;
  color: #b5842a;
  font-size: 0.88rem;
  font-weight: 600;
}
@media (prefers-color-scheme: dark) { .pub .award { color: #d9ad5c; } }

/* link row under a paper */
.links {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 0.88rem;
}
.links a, .links summary {
  color: var(--accent);
  cursor: pointer;
}
.links a:hover { text-decoration: underline; }

/* native details for abstract / bibtex — no JS toggle needed */
details.pub-more { display: contents; }
details.pub-more > summary {
  list-style: none;
  color: var(--accent);
  font-size: 0.88rem;
  display: inline;
}
details.pub-more > summary::-webkit-details-marker { display: none; }
details.pub-more > summary::marker { content: ""; }
details.pub-more[open] > summary { font-weight: 600; }
.reveal {
  flex-basis: 100%;
  margin-top: 8px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  line-height: 1.55;
}
.reveal pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---- awards ---- */
.award-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}
.award-card {
  display: flex;
  gap: 16px;
  align-items: center;
}
.award-card a { flex: 0 0 auto; }
.award-card img {
  width: 96px;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  display: block;
}
.award-card .title { font-weight: 600; font-size: 0.98rem; margin: 0 0 2px; }
.award-card .sub { color: var(--muted); font-size: 0.9rem; }

/* ---- advising ---- */
.subhead {
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  margin: 26px 0 4px;
}
.subhead:first-of-type { margin-top: 4px; }
.advisee { padding: 12px 0; border-bottom: 1px solid var(--border); }
.advisee:last-child { border-bottom: none; }
.advisee .head { font-weight: 600; }
.advisee .year { color: var(--muted); font-weight: 400; }
.advisee .degree { font-weight: 600; }
.advisee .after { color: var(--muted); font-size: 0.92rem; }

/* ---- teaching ---- */
.course {
  display: flex;
  gap: 18px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.course:last-child { border-bottom: none; }
.course .years {
  flex: 0 0 120px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.92rem;
}

/* ---- footer ---- */
footer {
  margin-top: 72px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}

/* ---- lightbox (pure CSS via :target) for award images ---- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}
.lightbox:target { display: flex; }
.lightbox img { max-width: 90vw; max-height: 88vh; border-radius: 6px; }
.lightbox .close {
  position: absolute;
  top: 22px;
  right: 30px;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  text-decoration: none;
}

/* ---- responsive ---- */
@media (max-width: 620px) {
  header.hero { flex-direction: column; text-align: center; gap: 18px; padding-top: 40px; }
  .social { justify-content: center; }
  .pub { flex-direction: column; gap: 12px; }
  .pub .thumb, .pub .thumb img { width: 100%; max-width: 260px; }
  ul.news li { flex-direction: column; gap: 2px; }
  ul.news .date { flex-basis: auto; }
  .course { flex-direction: column; gap: 2px; }
}