/* SITE COLORS: Change these variables to update the appearance. */
:root {
  --background: #fafafa;
  --text: #20252b;
  --muted: #68727d;
  --accent: #244f73;
  --line: #dfe3e6;
  --white: #ffffff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--background); color: var(--text); font-family: "Inter", Arial, sans-serif; font-size: 16px; line-height: 1.75; }
a { color: var(--accent); }
.container { width: min(1100px, 88%); margin: auto; }
.narrow { max-width: 900px; margin-left: max(6%, calc((100% - 1100px)/2)); margin-right: auto; }
.header { background: rgba(250,250,250,.97); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 100; }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.name { color: var(--text); font-family: "Libre Baskerville", Georgia, serif; font-weight: 700; text-decoration: none; font-size: .93rem; }
nav { display: flex; flex-wrap: wrap; gap: 24px; }
nav a { color: var(--muted); text-decoration: none; font-size: .88rem; }
nav a:hover, nav a:focus-visible { color: var(--accent); text-decoration: underline; }
.hero { padding: 108px 0 104px; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1fr) 280px; gap: 75px; align-items: center; }
.eyebrow, .section-label, .project-kind { color: var(--accent); font-weight: 600; font-size: .78rem; letter-spacing: .11em; text-transform: uppercase; }
h1, h2 { font-family: "Libre Baskerville", Georgia, serif; }
h1 { font-size: clamp(2.5rem, 5.4vw, 4.25rem); line-height: 1.18; letter-spacing: -.03em; margin: 17px 0 22px; }
h2 { font-size: clamp(1.75rem, 3vw, 2.2rem); margin: 10px 0 30px; line-height: 1.3; }
h3 { margin: 0 0 10px; font-size: 1.08rem; line-height: 1.5; }
p { margin: 0 0 20px; }
.subtitle { font-size: 1.1rem; color: var(--muted); max-width: 660px; }
.intro { max-width: 680px; font-size: 1.06rem; margin-top: 27px; }
.links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
.links a, .text-link { text-decoration: none; font-weight: 600; }
.links a:hover, .text-link:hover { text-decoration: underline; }
.photo-container { display: flex; justify-content: center; }
.profile-photo { width: 260px; height: 260px; object-fit: cover; border-radius: 50%; border: 5px solid var(--white); box-shadow: 0 0 0 1px var(--line), 0 15px 40px rgba(0,0,0,.08); }
.section { padding: 85px 0; border-top: 1px solid var(--line); }
.section-intro { max-width: 760px; color: var(--muted); }
.research-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 35px 72px; margin-top: 48px; }
.research-grid article { border-top: 1px solid var(--line); padding-top: 18px; }
.research-grid p, .project-card p { color: var(--muted); }
.project-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; margin-top: 36px; }
.project-card { border: 1px solid var(--line); background: var(--white); padding: 29px; border-radius: 4px; }
.project-kind { margin-bottom: 18px; font-size: .72rem; }
.project-card h3 { font-family: "Libre Baskerville", Georgia, serif; font-size: 1.19rem; }
.project-note { font-size: .88rem; font-style: italic; }
.contact p { max-width: 760px; }
footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: .83rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
@media (max-width: 800px) {
  html { scroll-padding-top: 135px; }
  .nav { flex-direction: column; align-items: flex-start; padding: 18px 0; gap: 12px; }
  nav { gap: 12px 18px; }
  .hero { padding: 65px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .photo-container { grid-row: 1; justify-content: flex-start; }
  .profile-photo { width: 190px; height: 190px; }
  .section { padding: 65px 0; }
  .research-grid, .project-grid { grid-template-columns: 1fr; gap: 22px; }
  .narrow { margin-left: auto; margin-right: auto; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Public open-source software */
.software-list { display: grid; gap: 32px; margin-top: 40px; }
.software-feature { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 32px; align-items: center; padding: 32px; background: var(--white); border: 1px solid var(--line); border-radius: 10px; }
.software-logo { display: block; width: 100%; max-width: 150px; height: auto; object-fit: contain; }
.software-feature h3, .software-legacy h3 { margin: 6px 0 10px; font-family: "Libre Baskerville", serif; font-size: 1.3rem; }
.software-feature p, .software-legacy p { margin: 0 0 13px; color: var(--muted); }
.software-feature .project-kind, .software-legacy .project-kind { color: var(--accent); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; }
.software-legacy { border-top: 1px solid var(--line); padding: 26px 0 4px; max-width: 780px; }
.software-legacy a { color: var(--accent); }
@media (max-width: 600px) {
  .software-feature { grid-template-columns: 1fr; padding: 24px; gap: 20px; }
  .software-logo { max-width: 115px; }
}

/* Contact invitation and affiliation */
.contact-affiliation { margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); }
.contact-affiliation strong { color: var(--text); }
.narrow p { max-width: 800px; }