/* Personal site theme, derived from the CPSY 1291 course theme
   (~/Work/teaching/cpsy1291/2026/slides/template/cpsy1291.css):
   warm paper, slate ink, sienna emphasis, Brown title band, Poppins + Lora.
   Contrast on --bg: body 9.8:1, link 5.1:1, muted 4.7:1. */

@font-face { font-family: "Poppins"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/poppins/Poppins-400.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/poppins/Poppins-500.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/poppins/Poppins-600.woff2") format("woff2"); }
@font-face { font-family: "Lora"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/lora/Lora-400.woff2") format("woff2"); }
@font-face { font-family: "Lora"; font-style: italic; font-weight: 400; font-display: swap; src: url("../fonts/lora/Lora-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Lora"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/lora/Lora-600.woff2") format("woff2"); }

:root {
  --bg: #FAF9F5;
  --ink: #1E293B;
  --body: #334155;
  --accent: #9C5A2E;
  --accent-dark: #7A4421;
  --muted: #7A6E62;
  --rule: #E7E3DA;
  --fill: #4E3629;
  --on-fill: #FAF9F5;
  --sub: #EBDFD4;
  --on-fill-dim: #D8C7B8;
  --gold: #FFC72C;
  --focus: #0969da;
  --sans: "Poppins", system-ui, sans-serif;
  --serif: "Lora", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Links: no underline in any state; semibold keeps them distinguishable. */
a, a:visited { color: var(--accent); font-weight: 600; text-decoration: none; }
a:hover, a:focus { color: var(--accent-dark); text-decoration: none; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

code, pre, kbd, samp { font-family: var(--mono); font-size: 0.95em; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  padding: 0.5rem 1rem; background: var(--bg); color: var(--ink);
  font-family: var(--sans); border-radius: 4px;
}
.skip-link:focus { top: 1rem; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Header: Brown title band ---------- */
.site-header { background: var(--fill); color: var(--on-fill); }
.site-header :focus-visible { outline-color: var(--gold); }

.site-header__inner {
  max-width: 49rem; margin: 0 auto; padding: 3.5rem 1.5rem 3rem;
  display: grid; grid-template-columns: auto 1fr; gap: 2.5rem; align-items: center;
}

.portrait {
  width: 10.5rem; height: 10.5rem; border-radius: 50%; object-fit: cover;
  border: 3px solid rgba(250, 249, 245, 0.25); display: block;
}

.site-title {
  font-family: var(--sans); font-weight: 600; color: var(--on-fill);
  font-size: clamp(2.1rem, 4.5vw, 3rem); line-height: 1.1; letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}
.site-title a, .site-title a:visited { color: inherit; }

.site-role { font-family: var(--sans); font-weight: 500; color: var(--sub); font-size: 1.05rem; line-height: 1.5; margin: 0 0 0.35rem; }
.site-tagline { font-style: italic; color: var(--on-fill-dim); font-size: 1rem; margin: 0 0 1.25rem; }

.header-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; list-style: none; padding: 0; margin: 0 0 0.9rem; }
.header-links a, .header-links a:visited { color: var(--on-fill); font-family: var(--sans); font-weight: 500; font-size: 0.95rem; }
.header-links a:hover { color: var(--gold); }

.social-icons { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-left: -0.4rem; }
.social-icons a, .social-icons button {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 2.25rem; min-height: 2.25rem; padding: 0.25rem;
  color: var(--on-fill-dim); background: none; border: 0; cursor: pointer;
  font-size: 1.1rem; font-weight: 400; border-radius: 4px;
}
.social-icons a:hover, .social-icons button:hover { color: var(--on-fill); }
.social-icons a[href^="mailto:"] { font-size: 0.95rem; font-family: var(--sans); font-weight: 500; color: var(--on-fill); }

/* ---------- Section navigation ---------- */
.section-nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(250, 249, 245, 0.96); border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(6px);
}
.section-nav ul {
  max-width: 49rem; margin: 0 auto; padding: 0 1.5rem;
  display: flex; flex-wrap: wrap; gap: 0 1.75rem; list-style: none;
}
.section-nav a, .section-nav a:visited {
  display: inline-block; padding: 0.8rem 0;
  font-family: var(--sans); font-weight: 500; font-size: 0.95rem; color: var(--ink);
}
.section-nav a:hover { color: var(--accent); }

/* ---------- Main column ---------- */
main { max-width: 49rem; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; }

h1, h2, h3, h4 { font-family: var(--sans); font-weight: 600; color: var(--ink); line-height: 1.25; }
main h1 { font-size: 2.2rem; margin: 0 0 1.5rem; }
main h2 {
  font-size: 1.75rem; margin: 3.5rem 0 1.25rem; padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule); scroll-margin-top: 4.5rem;
}
main h3 { font-size: 1.15rem; margin: 2.25rem 0 0.6rem; }
main > h2:first-child, main > section:first-child > h2:first-child { margin-top: 0; }

p { margin: 0 0 1.1rem; }
.lede { font-size: 1.125rem; }

.funding { font-size: 0.95rem; font-style: italic; color: var(--muted); }
.funding a { font-style: normal; }
.note { font-size: 0.95rem; color: var(--muted); }

/* ---------- Entry lists: courses, publications, talks, grants ---------- */
.entry-list { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.entry { padding: 1.1rem 0; border-top: 1px solid var(--rule); }
.entry:first-child { border-top: 0; padding-top: 0.25rem; }
.entry-title { display: block; font-weight: 600; color: var(--ink); font-size: 1.0625rem; line-height: 1.45; margin: 0 0 0.2rem; }
a.entry-title, a.entry-title:visited { color: var(--accent); }
a.entry-title:hover { color: var(--accent-dark); }
.entry-meta { display: block; font-size: 0.95rem; color: var(--muted); line-height: 1.5; }
.entry-meta i { font-style: italic; }
.entry-text { font-size: 1rem; margin: 0.45rem 0 0; }

.video {
  display: block; width: 100%; aspect-ratio: 16 / 9; border: 0;
  border-radius: 6px; margin-top: 0.9rem; background: var(--rule);
}

/* ---------- Course pages (CPSY 1291, CPSY 1950) ---------- */
.course-header .site-header__inner { grid-template-columns: 1fr; padding: 2.75rem 1.5rem 2.25rem; }
.course-kicker { font-family: var(--sans); font-weight: 500; font-size: 0.9rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--on-fill-dim); margin: 0 0 0.6rem; }
.course-header .header-links { margin: 0.9rem 0 0; }

.course h3 { scroll-margin-top: 4.5rem; }
.course h3 .when { display: block; font-family: var(--sans); font-weight: 500; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.15rem; }
.course h4 {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--muted); margin: 1.25rem 0 0.4rem;
}
.course ul.refs { list-style: none; padding: 0; margin: 0 0 0.75rem; }
.course ul.refs li { padding-left: 1rem; text-indent: -1rem; margin: 0 0 0.45rem; line-height: 1.55; font-size: 1rem; }
.course ul.refs li i { font-style: italic; }
.course .slides { font-family: var(--sans); font-size: 0.95rem; margin: 0.25rem 0 0.5rem; }
.course .part {
  font-family: var(--sans); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--accent); margin: 3rem 0 0; padding-top: 1rem; border-top: 2px solid var(--fill);
}
.course .part span { display: block; text-transform: none; letter-spacing: 0; font-size: 1.4rem; color: var(--ink); margin-top: 0.2rem; }
.course .part + h3 { margin-top: 1.25rem; }
.course .theme { font-family: var(--serif); font-style: italic; color: var(--muted); font-weight: 400; font-size: 0.95rem; }
.course .topic-index { columns: 2; column-gap: 2rem; padding-left: 1.4rem; margin: 0 0 1rem; font-family: var(--sans); font-size: 0.95rem; }
.course .topic-index li { margin: 0 0 0.35rem; break-inside: avoid; }
.course .topic { border-top: 1px solid var(--rule); margin-top: 2.5rem; padding-top: 0.25rem; }
.course .topic h3 { font-size: 1.3rem; margin: 1.5rem 0 0.4rem; }
.course .topic-summary { color: var(--body); margin: 0 0 0.5rem; }
.course ul.papers { list-style: none; padding: 0; margin: 0 0 0.5rem; }
.course ul.papers li { margin: 0 0 0.8rem; line-height: 1.45; }
.course ul.papers a { display: block; font-size: 1rem; }
.course ul.papers span { display: block; font-size: 0.9rem; color: var(--muted); }
.course .paper-theme { font-family: var(--sans); font-size: 0.9rem; font-weight: 600; color: var(--ink); margin: 1rem 0 0.5rem; }
@media (max-width: 640px) { .course .topic-index { columns: 1; } }
.site-footer .copyright { max-width: 46rem; margin: 0 auto 0.75rem; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule); text-align: center;
  padding: 1.5rem; font-size: 0.9rem; color: var(--muted);
}
.site-footer p { margin: 0; }

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .site-header__inner { grid-template-columns: 1fr; gap: 1.25rem; padding: 2rem 1.25rem; }
  .portrait { width: 7rem; height: 7rem; }
  .section-nav ul { flex-wrap: nowrap; overflow-x: auto; gap: 0 1.1rem; padding: 0 1.25rem; scrollbar-width: none; }
  .section-nav li { flex: none; }
  main { padding: 2rem 1.25rem 3rem; }
  main h2 { font-size: 1.5rem; margin-top: 2.75rem; }
}

@media print {
  .section-nav, .social-icons, .video, .skip-link { display: none; }
  .site-header { background: none; color: var(--ink); }
  .site-title, .site-role, .site-tagline, .header-links a { color: var(--ink); }
}