:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #17201d;
  --muted: #5c6963;
  --line: #dfe4dd;
  --teal: #006f6a;
  --green: #2c5f45;
  --copper: #a86137;
  --graphite: #2c3230;
  --wash: #eef4f1;
  --shadow: 0 18px 48px rgba(23, 32, 29, 0.12);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
  padding: 0 44px;
  background: rgba(251, 250, 247, 0.86);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(251, 250, 247, 0.95);
}

.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.88rem;
  color: var(--muted);
}

.nav-links a {
  border-bottom: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--copper);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: 34px;
  min-height: calc(100vh - 68px);
  padding: 54px 44px 74px;
  overflow: hidden;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--copper);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: 0;
  line-height: 1.05;
}

h1 {
  max-width: 680px;
  margin-bottom: 22px;
  font-size: clamp(3.3rem, 8vw, 7.4rem);
  font-weight: 700;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2rem, 4.2vw, 4rem);
  font-weight: 700;
}

h3 {
  margin-bottom: 8px;
  font-size: 1rem;
  line-height: 1.35;
}

.lead {
  max-width: 720px;
  margin-bottom: 30px;
  color: var(--graphite);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--teal);
  background: var(--surface);
}

.button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #ffffff;
}

.hero-visual {
  position: relative;
  min-height: 470px;
  margin: 0;
}

.hero-visual img {
  width: min(760px, 58vw);
  height: min(680px, 72vh);
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.section {
  padding: 88px 44px;
}

.section-heading,
.intro-grid,
.theme-grid,
.feature-grid,
.software-list,
.publication-list,
.research-stack,
.cv-layout,
.contact-page-grid,
.timeline-columns,
.contact-section,
.site-footer {
  width: min(1120px, 100%);
  margin-inline: auto;
}

.page-hero {
  width: min(1120px, calc(100% - 88px));
  margin: 0 auto;
  padding: 94px 0 58px;
}

.page-hero.compact {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-hero h1 {
  margin-bottom: 18px;
}

.intro-section {
  border-top: 1px solid var(--line);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(300px, 0.74fr);
  gap: 48px;
  align-items: start;
}

.intro-grid p,
.theme p,
.software-item p,
.timeline p,
.skills-panel p {
  color: var(--muted);
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.theme {
  min-height: 230px;
  padding: 26px;
  background: var(--surface);
}

.theme h3 {
  color: var(--green);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.feature-card {
  display: flex;
  flex-direction: column;
  min-height: 270px;
  padding: 24px;
  background: var(--surface);
  transition: background 180ms ease, transform 180ms ease;
}

.feature-card:hover,
.feature-card:focus-visible {
  background: #f7fbf9;
  transform: translateY(-2px);
}

.feature-card span {
  margin-bottom: 60px;
  color: var(--copper);
  font-size: 0.82rem;
  font-weight: 800;
}

.feature-card p {
  color: var(--muted);
}

.tinted {
  background: var(--wash);
  border-block: 1px solid var(--line);
}

.software-list {
  display: grid;
  gap: 14px;
}

.software-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid rgba(44, 95, 69, 0.18);
}

.software-item:first-child {
  border-top: 1px solid rgba(44, 95, 69, 0.18);
}

.software-item a,
.contact-links a,
.site-footer a {
  color: var(--teal);
  font-weight: 800;
}

.publication-list {
  display: grid;
  gap: 18px;
  padding-left: 24px;
}

.publication-list li::marker {
  color: var(--copper);
  font-weight: 800;
}

.publication-list.detailed {
  gap: 24px;
}

.publication-list.detailed li {
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--line);
}

.publication-list.detailed h3 {
  margin-bottom: 8px;
  color: var(--graphite);
  font-size: 1.08rem;
}

.publication-list.detailed p {
  margin-bottom: 12px;
  color: var(--muted);
}

.compact-list {
  gap: 10px;
}

.pub-links,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.pub-links a,
.tag-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 11px;
  border: 1px solid rgba(0, 111, 106, 0.24);
  border-radius: 999px;
  color: var(--teal);
  font-size: 0.84rem;
  font-weight: 800;
}

.research-stack {
  display: grid;
  gap: 18px;
}

.research-block {
  display: grid;
  grid-template-columns: minmax(0, 0.58fr) minmax(280px, 0.42fr);
  gap: 36px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.research-block h2 {
  margin-bottom: 12px;
  font-size: clamp(1.7rem, 3vw, 2.8rem);
}

.research-block p {
  color: var(--muted);
}

.research-block a {
  color: var(--teal);
  font-weight: 800;
}

.muted-block {
  background: rgba(238, 244, 241, 0.75);
  border: 1px solid var(--line);
  padding: 28px;
}

.split-section {
  border-top: 1px solid var(--line);
}

.timeline-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 60px;
}

.timeline {
  display: grid;
  gap: 22px;
  padding: 0;
  list-style: none;
}

.timeline li {
  padding-left: 22px;
  border-left: 3px solid var(--line);
}

.timeline span {
  display: block;
  margin-bottom: 4px;
  color: var(--copper);
  font-size: 0.82rem;
  font-weight: 800;
}

.timeline strong {
  display: block;
  line-height: 1.4;
}

.skills-panel {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.45fr);
  gap: 50px;
  align-items: start;
}

.contact-links {
  display: grid;
  gap: 12px;
  padding-top: 8px;
}

.contact-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.58fr);
  gap: 34px;
  align-items: start;
}

.contact-card {
  min-height: 340px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.contact-card span,
.profile-row span {
  display: block;
  margin-bottom: 10px;
  color: var(--copper);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-card h2 {
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  overflow-wrap: anywhere;
}

.profile-list {
  display: grid;
  gap: 12px;
}

.profile-row {
  display: block;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.profile-row:hover,
.profile-row:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(0, 111, 106, 0.42);
}

.profile-row strong {
  display: block;
  color: var(--graphite);
  overflow-wrap: anywhere;
}

.placeholder-row {
  color: var(--muted);
}

.cv-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.32fr) minmax(0, 0.68fr);
  gap: 54px;
  align-items: start;
}

.cv-sidebar {
  position: sticky;
  top: 96px;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.cv-sidebar h2 {
  font-size: 2rem;
}

.cv-sidebar a {
  display: block;
  margin-top: 12px;
  color: var(--teal);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.cv-main {
  display: grid;
  gap: 34px;
}

.cv-section {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.cv-section h2 {
  font-size: clamp(1.55rem, 2.5vw, 2.4rem);
}

.pdf-frame {
  width: min(1120px, 100%);
  height: 76vh;
  min-height: 620px;
  margin: 0 auto;
  border: 1px solid var(--line);
  background: var(--surface);
}

.pdf-frame object {
  display: block;
  width: 100%;
  height: 100%;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 30px 44px 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    min-height: auto;
    padding: 18px 24px;
  }

  .nav-links {
    width: 100%;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 44px 24px 60px;
  }

  .hero-visual {
    min-height: 0;
  }

  .hero-visual img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
  }

  .section {
    padding: 66px 24px;
  }

  .intro-grid,
  .theme-grid,
  .feature-grid,
  .timeline-columns,
  .contact-section,
  .research-block,
  .cv-layout,
  .contact-page-grid {
    grid-template-columns: 1fr;
  }

  .theme {
    min-height: 0;
  }

  .page-hero {
    width: calc(100% - 48px);
    padding: 58px 0 38px;
  }

  .page-hero.compact {
    min-height: 280px;
  }

  .feature-card {
    min-height: 0;
  }

  .feature-card span {
    margin-bottom: 28px;
  }

  .cv-sidebar {
    position: static;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 3.1rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .software-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .site-footer {
    flex-direction: column;
    padding-inline: 24px;
  }
}

/* Contact page refresh */
.contact-hero .eyebrow,
.contact-label,
.profile-copy span {
  letter-spacing: 0.02em;
  text-transform: none;
}

.contact-shell {
  padding-top: 28px;
}

.contact-page-grid {
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.65fr);
  gap: 28px;
}

.contact-card {
  position: relative;
  min-height: 430px;
  padding: clamp(28px, 5vw, 54px);
  overflow: hidden;
  background: radial-gradient(circle at 88% 18%, rgba(0, 111, 106, 0.16), transparent 30%), linear-gradient(135deg, #ffffff 0%, #f3faf7 56%, #fff8f2 100%);
  border: 1px solid rgba(0, 111, 106, 0.18);
  border-radius: 18px;
  box-shadow: 0 24px 80px rgba(23, 32, 29, 0.1);
}

.contact-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(0, 111, 106, 0.2);
  border-radius: 50%;
}

.contact-card-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 34px;
  border-radius: 16px;
  background: var(--teal);
  color: #ffffff;
  box-shadow: 0 16px 34px rgba(0, 111, 106, 0.22);
}

.contact-card-icon svg,
.profile-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.profile-icon.github-icon svg {
  fill: currentColor;
  stroke: none;
}

.contact-label,
.profile-copy span {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 750;
}

.contact-card h2 {
  position: relative;
  z-index: 1;
  max-width: 100%;
  margin-bottom: 18px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.08;
  overflow-wrap: break-word;
  word-break: normal;
}

.contact-card p {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin-bottom: 28px;
  color: var(--muted);
}

.profile-list {
  gap: 14px;
}

.profile-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 104px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(23, 32, 29, 0.1);
  border-radius: 18px;
  box-shadow: 0 14px 46px rgba(23, 32, 29, 0.07);
  backdrop-filter: blur(10px);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.profile-row:hover,
.profile-row:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(0, 111, 106, 0.42);
  box-shadow: 0 22px 56px rgba(23, 32, 29, 0.12);
}

.profile-row strong {
  font-size: 1.04rem;
}

.profile-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  color: #ffffff;
  font-weight: 850;
  letter-spacing: 0;
}

.google-icon {
  background: linear-gradient(135deg, #4285f4, #34a853 48%, #fbbc05 72%, #ea4335);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.5rem;
}

.github-icon {
  background: #24292f;
}

.orcid-icon {
  background: #a6ce39;
  font-size: 1.1rem;
}

.facebook-icon {
  background: #1877f2;
  font-family: Arial, sans-serif;
  font-size: 2rem;
  line-height: 1;
}

.cv-icon {
  background: linear-gradient(135deg, var(--copper), #d99b6b);
}

@media (max-width: 560px) {
  .contact-card {
    min-height: 0;
  }

  .profile-row {
    grid-template-columns: 48px minmax(0, 1fr);
    min-height: 92px;
    padding: 16px;
  }

  .profile-icon {
    width: 48px;
    height: 48px;
  }
}
/* Softer academic labels */
.eyebrow,
.section-kicker {
  color: var(--green);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.profile-row .profile-icon {
  display: grid;
  margin-bottom: 0;
  color: #ffffff;
  font-size: 1.1rem;
  text-transform: none;
}

.profile-row .google-icon {
  font-size: 1.5rem;
}

.profile-row .facebook-icon {
  font-size: 2rem;
}