:root {
  --bg: #f4f0e8;
  --bg-soft: #ebe4d8;
  --surface: rgba(255, 252, 246, 0.88);
  --surface-strong: #fffaf2;
  --border: rgba(31, 47, 64, 0.14);
  --ink: #1d2833;
  --ink-soft: #485766;
  --accent: #8a6a3f;
  --accent-deep: #6d4f2e;
  --shadow: 0 24px 60px rgba(34, 41, 48, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Source Sans 3", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(138, 106, 63, 0.18), transparent 28%),
    linear-gradient(180deg, #f7f4ee 0%, var(--bg) 52%, #f0ebe3 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(29, 40, 51, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 40, 51, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 85%);
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1.25rem 0 4rem;
}

.site-header {
  position: sticky;
  top: 1rem;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.75);
  backdrop-filter: blur(18px);
  box-shadow: 0 8px 30px rgba(31, 47, 64, 0.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  text-decoration: none;
  font-family: "Newsreader", serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--surface-strong);
  background: linear-gradient(135deg, var(--accent-deep), var(--accent));
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 600;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.lead a:hover,
.lead a:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.quick-facts a:hover,
.quick-facts a:focus-visible {
  color: var(--accent-deep);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
  align-items: stretch;
  padding: 1rem 0 0.5rem;
}

.hero-copy,
.hero-photo-card,
.hero-panel,
.paper-card,
.project-card,
.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  animation: rise-in 700ms ease both;
}

.hero-copy {
  padding: clamp(2rem, 4vw, 3.6rem);
}

.hero-photo-card {
  padding: 1.1rem;
}

.eyebrow,
.section-kicker,
.panel-label,
.project-type,
.contact-label {
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Newsreader", serif;
  font-weight: 700;
  line-height: 1.05;
}

h1 {
  max-width: 9ch;
  font-size: clamp(3.35rem, 7vw, 5.6rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
}

.lead,
.paper-card p,
.project-card p {
  color: var(--ink-soft);
  font-size: 1.08rem;
  line-height: 1.7;
}

.lead {
  max-width: 48rem;
  margin: 1.4rem 0 0;
}

.hero-copy .lead a,
.hero-copy .lead a:visited {
  color: var(--accent-deep);
  font-weight: 600;
  text-decoration: none;
}

.hero-copy .lead a:hover,
.hero-copy .lead a:focus-visible {
  color: var(--accent-deep);
  text-decoration: underline;
}

.hero-actions,
.card-actions,
.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 3rem;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.contact-card:hover,
.contact-card:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--surface-strong);
  background: linear-gradient(135deg, var(--accent-deep), var(--accent));
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 250, 242, 0.95);
  border: 1px solid var(--border);
}

.hero-panel {
  grid-column: 1 / -1;
  padding: 1.8rem;
  background:
    linear-gradient(180deg, rgba(255, 252, 246, 0.94), rgba(247, 241, 231, 0.92)),
    var(--surface);
  animation-delay: 120ms;
}

.profile-photo-wrap {
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 16px 32px rgba(31, 47, 64, 0.12);
  height: 100%;
}

.profile-photo {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-panel-content {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 1.25rem 1.5rem;
  align-items: start;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.tag-list li {
  padding: 0.5rem 0.8rem;
  border: 1px solid rgba(138, 106, 63, 0.2);
  border-radius: 999px;
  background: rgba(138, 106, 63, 0.08);
  color: var(--ink);
  font-weight: 600;
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.quick-facts div {
  min-width: 0;
  padding-top: 0.2rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}

.quick-facts dt {
  margin-bottom: 0.25rem;
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.quick-facts dd {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 600;
}

.quick-facts a,
.text-link {
  color: var(--accent-deep);
}

.section {
  padding: 4.5rem 0 0;
}

.section-heading {
  margin-bottom: 1.4rem;
}

.section-heading-secondary {
  margin-top: 2.4rem;
}

.paper-card,
.project-card,
.contact-card {
  padding: 1.6rem;
}

.paper-card a,
.project-card a {
  color: var(--accent-deep);
  text-decoration: none;
}

.paper-card a:hover,
.project-card a:hover,
.paper-card a:focus-visible,
.project-card a:focus-visible {
  text-decoration: underline;
}

.card-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  background: rgba(138, 106, 63, 0.12);
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 700;
}

.status-pill-soft {
  background: rgba(31, 47, 64, 0.08);
  color: var(--ink-soft);
}

.coauthors {
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.featured-card {
  position: relative;
  overflow: hidden;
  animation-delay: 140ms;
}

.featured-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -45% 30%;
  height: 220px;
  background: radial-gradient(circle, rgba(138, 106, 63, 0.14), transparent 62%);
  pointer-events: none;
}

.paper-stack {
  display: grid;
  gap: 1.2rem;
  margin-bottom: 1.2rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.project-links,
.teaching-meta {
  margin-top: 0.8rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.teaching-list {
  display: grid;
  gap: 0.9rem;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.teaching-list li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(138, 106, 63, 0.08);
  border: 1px solid rgba(138, 106, 63, 0.12);
}

.teaching-list strong {
  font-family: "Newsreader", serif;
  font-size: 1.32rem;
  color: var(--ink);
  line-height: 1.15;
}

.teaching-list span {
  color: var(--accent-deep);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.teaching-award {
  margin-top: 1rem;
  font-family: "Newsreader", serif;
  font-size: 1.42rem;
  font-weight: 700;
  color: var(--accent-deep);
  line-height: 1.15;
}

.work-card {
  max-width: 52rem;
}

.project-card:nth-child(1) {
  animation-delay: 120ms;
}

.project-card:nth-child(2) {
  animation-delay: 180ms;
}

.project-card:nth-child(3) {
  animation-delay: 240ms;
}

.contact-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.contact-email {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.social-links {
  display: flex;
  gap: 0.85rem;
  align-items: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 250, 242, 0.95);
  color: var(--accent-deep);
  box-shadow: 0 10px 22px rgba(31, 47, 64, 0.06);
  transition: transform 180ms ease, color 180ms ease, border-color 180ms ease;
}

.social-link:hover,
.social-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(138, 106, 63, 0.35);
}

.social-icon {
  width: 1.55rem;
  height: 1.55rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.linkedin-icon {
  fill: currentColor;
  stroke: none;
}

.bitbybit-link {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
}

.bitbybit-link img {
  display: block;
  width: min(260px, 100%);
  max-width: 260px;
  height: auto;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 920px) {
  .hero,
  .project-grid,
  .teaching-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel-content,
  .quick-facts {
    grid-template-columns: 1fr;
  }

  .quick-facts div {
    padding-left: 0;
    padding-top: 1rem;
    border-left: 0;
    border-top: 1px solid var(--border);
  }

  .site-header {
    border-radius: 24px;
    padding: 1rem;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(calc(100% - 1rem), var(--max-width));
    padding-top: 0.5rem;
  }

  .site-header {
    position: static;
  }

  .hero-copy,
  .hero-photo-card,
  .hero-panel,
  .paper-card,
  .project-card,
  .contact-card {
    padding: 1.2rem;
    border-radius: 22px;
  }

  h1 {
    max-width: 100%;
  }
}