:root {
  color-scheme: light;
  --bg: #f7f5ef;
  --paper: #ffffff;
  --ink: #22211f;
  --muted: #68645d;
  --line: #ddd7ca;
  --accent: #0f766e;
  --accent-dark: #0a4f4a;
  --warm: #d97706;
  --soft: #e8f2ef;
  --shadow: 0 18px 50px rgba(37, 32, 25, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.1), transparent 32rem),
    linear-gradient(225deg, rgba(217, 119, 6, 0.09), transparent 28rem),
    var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--accent-dark);
  text-decoration-color: rgba(15, 118, 110, 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus {
  color: var(--accent);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(221, 215, 202, 0.75);
  background: rgba(247, 245, 239, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0.85rem 0;
}

.brand {
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--accent-dark);
}

.language {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.32rem 0.68rem;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink) !important;
  font-weight: 650;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.7fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(4.5rem, 10vw, 8rem) 0 clamp(3.5rem, 7vw, 6rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-dark);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  max-width: 860px;
  font-size: clamp(3.1rem, 8vw, 6.9rem);
  font-weight: 820;
}

.lead {
  max-width: 760px;
  margin: 1.5rem 0 0;
  color: #3b3833;
  font-size: clamp(1.18rem, 2.4vw, 1.58rem);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 0.62rem 1rem;
  background: var(--ink);
  color: white;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
}

.portrait-card {
  justify-self: end;
  width: min(100%, 340px);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
}

.portrait-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px;
  object-fit: cover;
}

.portrait-card p {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.stat {
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.78);
}

.stat strong {
  display: block;
  font-size: 1.45rem;
  line-height: 1.1;
}

.stat span {
  color: var(--muted);
  font-size: 0.92rem;
}

section {
  padding: clamp(3.2rem, 7vw, 5.5rem) 0;
  border-top: 1px solid rgba(221, 215, 202, 0.75);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(170px, 0.42fr) minmax(0, 1fr);
  gap: clamp(1rem, 5vw, 4rem);
  align-items: start;
  margin-bottom: 2rem;
}

h2 {
  font-size: clamp(1.85rem, 3.8vw, 3rem);
}

.section-heading p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.stacked-cards {
  margin-top: 1rem;
}

.card,
.timeline-item,
.publication {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 10px 28px rgba(37, 32, 25, 0.05);
}

.card {
  padding: 1.25rem;
}

.card h3,
.timeline-item h3 {
  font-size: 1.2rem;
}

.card p,
.timeline-item p {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 1.4rem;
  padding: 1.2rem;
}

.timeline-meta {
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.company-logo,
.recognition-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 112px;
  min-height: 58px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  line-height: 1.15;
  text-align: center;
}

.company-logo {
  padding: 0.55rem;
}

.company-logo img,
.institution-logo img {
  display: block;
  max-width: 100%;
  max-height: 42px;
  object-fit: contain;
}

.company-logo.square img {
  max-height: 50px;
}

.logo-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.institution-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem;
  background: rgba(255, 255, 255, 0.78);
}

.institution-logo img {
  max-height: 34px;
}

.recognition-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.recognition-logo {
  width: 68px;
  min-height: 48px;
  color: var(--ink);
}

.recognition-logo.facebook {
  color: #1877f2;
  font-size: 1.7rem;
  font-family: Arial, sans-serif;
  font-weight: 900;
  letter-spacing: 0;
}

.recognition-logo.mit {
  color: #a31f34;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

.recognition-logo.uba {
  color: #1d2952;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

.recognition-logo.utdt {
  color: #231d20;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.date {
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.role {
  color: var(--muted);
  font-size: 0.98rem;
  font-weight: 650;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  background: var(--soft);
  color: var(--accent-dark);
  font-size: 0.86rem;
  font-weight: 700;
}

.publications {
  display: grid;
  gap: 0.7rem;
}

.publication {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
}

.publication .year {
  color: var(--warm);
  font-weight: 850;
}

.publication p {
  margin: 0;
  color: var(--muted);
}

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

.footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .hero,
  .section-heading,
  .cards,
  .split {
    grid-template-columns: 1fr;
  }

  .portrait-card {
    justify-self: start;
    width: min(100%, 300px);
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .timeline-item,
  .publication {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .timeline-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.8rem);
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .wrap,
  .nav {
    width: min(100% - 28px, 1120px);
  }

  .nav-links {
    gap: 0.72rem;
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 3rem;
  }

  .footer-inner {
    flex-direction: column;
  }

  .recognition-card {
    grid-template-columns: 1fr;
  }

  .logo-card {
    grid-template-columns: 1fr;
  }
}