/* Design tokens */
:root {
  --color-ink: #20201f;
  --color-muted: #66645f;
  --color-paper: #f8f6f1;
  --color-line: #d9d4ca;
  --color-accent: #7c1f28;
  --font-serif: Georgia, "Times New Roman", serif;
}

/* Base */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 940px;
  margin-bottom: 30px;
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400;
  letter-spacing: -0.052em;
  line-height: 0.96;
}

h1 span {
  color: var(--color-accent);
}

/* Site navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(124, 31, 40, 0.16);
  background: rgba(248, 246, 241, 0.92);
  backdrop-filter: blur(12px);
}

.wordmark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.07em;
}

nav {
  display: flex;
  gap: clamp(18px, 3vw, 38px);
  color: #4f4d48;
  font-size: 13px;
  letter-spacing: 0.04em;
}

nav a,
footer a {
  border-bottom: 1px solid transparent;
  transition:
    color 0.16s,
    border-color 0.16s;
}

nav a:hover,
nav a:focus-visible,
nav a.active,
footer a:hover,
footer a:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Shared page layout */
.page-shell {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 24px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-intro {
  padding: 112px 0 72px;
  border-bottom: 1px solid var(--color-line);
}

.page-intro h1 {
  margin-bottom: 0;
}

.page-content {
  min-height: 300px;
  max-width: 820px;
  padding: 76px 0 112px;
}

.page-content h2 {
  margin-bottom: 30px;
  color: var(--color-accent);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Home page */
.hero {
  display: flex;
  min-height: calc(92vh - 72px);
  flex-direction: column;
  justify-content: center;
  padding: 90px 0 72px;
}

.role {
  max-width: 700px;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.5vw, 28px);
  line-height: 1.35;
}

.affiliation {
  margin-bottom: 32px;
  color: var(--color-muted);
  font-size: 15px;
}

.hero-links,
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
}

.hero-links a,
.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-bottom: 1px solid var(--color-ink);
  font-size: 14px;
  font-weight: 700;
}

.hero-links a:hover,
.contact-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Content types */
.prose-copy p {
  max-width: 720px;
  color: #55534e;
}

.prose-copy .lead {
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.42;
}

.research-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
  list-style: none;
}

.research-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 14px;
}

.timeline article {
  position: relative;
  padding: 0 0 36px 28px;
  border-left: 1px solid var(--color-line);
}

.timeline article::before {
  position: absolute;
  top: 7px;
  left: -4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.timeline article:last-child {
  padding-bottom: 0;
}

.timeline p {
  margin-bottom: 2px;
  font-size: 14px;
}

.timeline .degree {
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 21px;
}

.contact-grid {
  display: grid;
  align-items: start;
  gap: 22px;
}

.contact-grid a {
  width: fit-content;
}

.contact-grid a span {
  color: var(--color-muted);
  font-weight: 400;
}

.pending-link {
  color: #88857f;
  font-size: 13px;
}

/* Footer */
footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 0 40px;
  border-top: 1px solid var(--color-ink);
  color: var(--color-muted);
  font-size: 12px;
}

footer p {
  margin-bottom: 0;
}

/* Responsive layout */
@media (max-width: 680px) {
  .site-header {
    min-height: 64px;
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
    padding-top: 14px;
    padding-bottom: 12px;
  }

  nav {
    width: 100%;
    gap: 18px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .hero {
    min-height: auto;
    padding: 86px 0 64px;
  }

  h1 {
    font-size: clamp(28px, 8vw, 36px);
  }

  .research-list {
    grid-template-columns: 1fr;
  }

  .page-intro {
    padding: 76px 0 52px;
  }

  .page-content {
    padding: 56px 0 82px;
  }

  footer {
    gap: 18px;
  }
}

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