:root {
  --bg-deep: #08111a;
  --bg-mid: #10293a;
  --bg-soft: #14374b;
  --text: #f7f5ef;
  --muted: #bfd0d8;
  --accent: #87d8c7;
  --accent-strong: #d8f26a;
  --card: rgba(8, 20, 31, 0.72);
  --card-border: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --home-bg: url('https://images.squarespace-cdn.com/content/v1/5da00d13f096cb70b40ce225/1595728688262-NBFU6LBEKPBT4RXXGLG7/117e%2B-%2BCopy.jpg?format=2500w');
  --alt-bg: url('https://images.squarespace-cdn.com/content/v1/5da00d13f096cb70b40ce225/1595722653638-OU0W3CFKDF64E9LMFG1F/20200530_214643.jpg?format=2500w');
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg-deep);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
}

main {
  scroll-snap-type: y proximity;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: rgba(6, 12, 18, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  color: var(--text);
  text-decoration: none;
  width: 2.6rem;
  height: 2.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.04);
}

.main-nav {
  display: flex;
  gap: 0.95rem;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 0.2rem;
  border-bottom: 2px solid transparent;
  font-family: Arial, Helvetica, sans-serif;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.menu-toggle {
  display: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 0.35rem 0.7rem;
  font-family: Arial, Helvetica, sans-serif;
}

.panel {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6.5rem 1.2rem 3.5rem;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  scroll-margin-top: 4.8rem;
  scroll-snap-align: start;
}

.panel-home { background-image: var(--home-bg); }
.panel-career { background-image: var(--home-bg); }
.panel-education { background-image: var(--alt-bg); }
.panel-projects { background-image: var(--home-bg); }
.panel-publications { background-image: var(--alt-bg); }
.panel-contacts { background-image: var(--home-bg); }

.overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(145, 204, 190, 0.16), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(216, 242, 106, 0.14), transparent 22%),
    linear-gradient(to bottom, rgba(3, 10, 18, 0.56), rgba(3, 9, 16, 0.82));
}

.content {
  position: relative;
  width: min(1040px, 100%);
  z-index: 1;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr);
  gap: 1.4rem;
  align-items: end;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--accent-strong);
  font-family: Arial, Helvetica, sans-serif;
}

h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

h2 {
  margin-top: 0;
  margin-bottom: 1.1rem;
  font-size: clamp(1.8rem, 3.8vw, 3.1rem);
  letter-spacing: -0.03em;
}

h3 {
  margin-top: 0;
  margin-bottom: 0.55rem;
  font-size: 1.05rem;
}

p {
  margin-top: 0;
}

.lead {
  max-width: 58ch;
  margin: 1.25rem 0 0;
  font-size: clamp(1.02rem, 1.7vw, 1.34rem);
  color: #eef3f5;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.6rem;
}

.hero-links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: 0 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(6, 16, 26, 0.44);
  text-decoration: none;
  color: var(--text);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.92rem;
}

.hero-links a:hover {
  transform: translateY(-2px);
  border-color: rgba(216, 242, 106, 0.48);
  background: rgba(11, 28, 42, 0.64);
}

.hero-aside {
  display: grid;
  gap: 0.85rem;
}

.hero-panel {
  padding: 1rem 1rem 0.95rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(12, 28, 41, 0.8), rgba(8, 19, 29, 0.74));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.hero-label {
  margin-bottom: 0.35rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-family: Arial, Helvetica, sans-serif;
}

.hero-value {
  margin-bottom: 0;
  font-size: 1.05rem;
}

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

.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.list-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.list {
  display: grid;
  gap: 0.9rem;
}

.publication-source {
  color: var(--accent-strong);
  margin-bottom: 0.85rem;
}

.publication-metrics {
  margin-bottom: 1rem;
}

.publication-links {
  margin-top: 0;
  margin-bottom: 1.1rem;
}

.career-list {
  gap: 1rem;
}

.career-item {
  padding-bottom: 0.95rem;
}

.career-item .career-role {
  margin-bottom: 0.15rem;
  color: #e8f2f5;
}

.career-item .career-meta {
  margin-bottom: 0.7rem;
  font-size: 0.93rem;
  color: var(--accent-strong);
}

.career-item ul {
  margin: 0 0 0.75rem;
  padding-left: 1.2rem;
}

.career-item li {
  margin-bottom: 0.25rem;
  color: var(--muted);
}

a {
  color: var(--accent);
}

.card p,
.list-item p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    right: 0.9rem;
    left: 0.9rem;
    display: none;
    flex-direction: column;
    padding: 0.8rem;
    background: rgba(7, 13, 18, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 10px;
  }

  .main-nav.open {
    display: flex;
  }

  .card-grid,
  .two-up {
    grid-template-columns: 1fr;
  }

  .hero-layout {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: none;
  }

  .panel {
    background-attachment: scroll;
  }
}