:root {
  --bg: #f7f5f0;
  --surface: #ffffff;
  --text: #17211d;
  --muted: #64706a;
  --line: #d8ddd9;
  --accent: #234c3d;
  --accent-soft: #e8efeb;
  --max: 1120px;
}

/* Base styles */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

/* Header and navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 245, 240, 0.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(216, 221, 217, 0.85);
}

.nav-wrap {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--text);
  border-radius: 50%;
  text-decoration: none;
  font-weight: 700;
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--muted);
}

nav a:hover {
  color: var(--text);
}

/* Hero */

.hero {
  min-height: 76vh;
  display: flex;
  align-items: center;
  padding: 96px 0 80px;
}

.hero-copy {
  max-width: 880px;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  font-weight: 700;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.1;
}

h1 {
  font-family: "Libre Baskerville", Georgia, serif;
  font-size: clamp(3.3rem, 8vw, 6.8rem);
  letter-spacing: -0.045em;
  margin-bottom: 28px;
}

h2 {
  font-family: "Libre Baskerville", Georgia, serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.03em;
  max-width: 780px;
}

h3 {
  font-size: 1.35rem;
}

.lede {
  max-width: 780px;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: #46524c;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 22px;
}

.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 7px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.94rem;
}

.primary {
  background: var(--accent);
  color: #ffffff;
}

.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.5);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.link-row a,
.project-link,
.contact-links a {
  color: var(--accent);
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

/* Sections */

.section {
  padding: 100px 0;
}

.section-alt {
  padding: 100px 0;
  background: #eeece6;
}

.section-heading {
  margin-bottom: 42px;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  font-size: 1.05rem;
  color: #46524c;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 32px;
}

.skill-list span,
.tags span {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 0.82rem;
}

.profile-photo {
  width: 240px;
  height: 240px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  margin: 30px 0;
}

/* Projects */

.project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.project-card {
  grid-column: span 6;
  min-height: 350px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(33, 46, 40, 0.04);
}

.project-card.featured {
  grid-column: span 12;
  min-height: 300px;
}

.project-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.project-card p {
  max-width: 720px;
  color: #58645e;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 20px;
}

.project-link {
  margin-top: 24px;
  align-self: flex-start;
}

.muted-card {
  background: #f8f7f3;
}

.disabled {
  color: var(--muted);
  text-decoration: none;
}

/* Research */

.research-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.research-card p {
  max-width: 760px;
  color: #58645e;
}

/* Contact */

.contact-section {
  padding: 85px 0;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 50px;
  align-items: end;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

/* Footer */

footer {
  padding: 26px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

/* Mobile */

@media (max-width: 760px) {
  nav {
    gap: 14px;
    font-size: 0.85rem;
  }

  nav a:nth-child(3) {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 76px;
  }

  .about-grid,
  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .project-card,
  .project-card.featured {
    grid-column: span 12;
  }

  .research-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-wrap {
    flex-direction: column;
    gap: 4px;
  }
}