@charset "utf-8";

:root {
  --bg: #070a0f;
  --bg-soft: #0d121a;
  --panel: #121a24;
  --panel-strong: #172231;
  --line: rgba(232, 238, 245, 0.12);
  --text: #e8eef5;
  --muted: #9aa7b5;
  --soft: #c8d3df;
  --accent: #4cc9a7;
  --accent-2: #f2c14e;
  --danger: #ff6b6b;
  --shadow: rgba(0, 0, 0, 0.35);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "DM Sans", sans-serif;
  background:
    radial-gradient(circle at 18% 18%, rgba(76, 201, 167, 0.10), transparent 30rem),
    radial-gradient(circle at 85% 10%, rgba(242, 193, 78, 0.08), transparent 24rem),
    linear-gradient(180deg, var(--bg), #0a0f16 48%, #06080c);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.16;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.6'/%3E%3C/svg%3E");
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-2);
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(7, 10, 15, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav-logo {
  font-family: "Lora", serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1.45rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  position: relative;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.hamburger {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

main {
  padding-top: 5rem;
}

.page-section,
.hero {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  align-items: center;
  gap: 4rem;
  padding: 4.5rem 0 3rem;
}

.hero-tag,
.section-label,
.eyebrow {
  font-family: "DM Mono", monospace;
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: "Lora", serif;
  color: var(--text);
  line-height: 1.18;
}

h1 {
  max-width: 760px;
  margin: 1rem 0 0.8rem;
  font-size: clamp(2.7rem, 7vw, 5.7rem);
}

h1 span {
  color: var(--accent);
  font-style: italic;
}

h2 {
  margin-top: 0.7rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  font-size: 1.05rem;
}

.hero-subtitle,
.page-intro,
.hero-bio,
.card p,
.timeline-item p,
.pub-item p,
.contact-text,
.news-summary,
.news-details {
  color: var(--muted);
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--soft);
}

.hero-bio {
  max-width: 660px;
  margin: 1.4rem 0 2rem;
  font-size: 1rem;
}

.hero-actions,
.social-icons,
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2.75rem;
  padding: 0.72rem 1.15rem;
  border-radius: 0.45rem;
  border: 1px solid var(--line);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  color: var(--text);
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06100d;
}

.btn-primary:hover {
  color: #06100d;
  background: #66dfbe;
}

.hero-photo-frame {
  position: relative;
  width: min(320px, 72vw);
  aspect-ratio: 1;
  margin: 0 auto;
}

.hero-photo-frame::before {
  content: "";
  position: absolute;
  inset: -1rem;
  border: 1px solid rgba(76, 201, 167, 0.3);
  border-radius: 50%;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid rgba(232, 238, 245, 0.13);
  box-shadow: 0 28px 70px var(--shadow);
}

.social-icons {
  margin-top: 1.3rem;
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.45rem;
  height: 2.45rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--soft);
  background: rgba(232, 238, 245, 0.03);
}

.social-icons a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.page-section {
  padding: 4.5rem 0 5.5rem;
}

.page-header {
  max-width: 760px;
  margin-bottom: 2.4rem;
}

.page-intro {
  margin-top: 0.85rem;
  font-size: 1rem;
}

.section-divider {
  width: 56px;
  height: 3px;
  margin-top: 1.4rem;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
}

.card,
.news-item,
.ta-card,
.pub-item {
  background: linear-gradient(180deg, rgba(23, 34, 49, 0.96), rgba(15, 22, 32, 0.96));
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.18);
}

.card {
  min-height: 100%;
  padding: 1.45rem;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.card:hover,
.news-item:hover,
.ta-card:hover {
  transform: translateY(-3px);
  border-color: rgba(76, 201, 167, 0.45);
}

.card-icon,
.news-icon,
.ta-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.65rem;
  height: 2.65rem;
  margin-bottom: 0.9rem;
  border-radius: 0.55rem;
  background: rgba(76, 201, 167, 0.12);
  color: var(--accent);
}

.card h3 {
  margin-bottom: 0.45rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.16rem 0.55rem;
  border-radius: 999px;
  background: rgba(242, 193, 78, 0.12);
  color: var(--accent-2);
  font-family: "DM Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.news-item {
  padding: 1.25rem;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.news-toggle {
  display: grid;
  grid-template-columns: auto 1fr auto;
  width: 100%;
  gap: 1rem;
  align-items: start;
  background: transparent;
  border: 0;
  color: inherit;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.news-icon {
  margin-bottom: 0;
}

.news-date,
.timeline-date,
.pres-type {
  margin-bottom: 0.35rem;
  color: var(--accent-2);
  font-family: "DM Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.news-chevron {
  margin-top: 0.35rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.news-item.open .news-chevron {
  transform: rotate(180deg);
}

.news-details {
  display: none;
  margin: 1rem 0 0 3.65rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.news-item.open .news-details {
  display: block;
}

.news-details ul {
  padding-left: 1.1rem;
}

.timeline {
  position: relative;
  padding-left: 2.2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0.2rem;
  bottom: 0.2rem;
  left: 0.35rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(var(--accent), var(--accent-2));
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 0.25rem;
  left: -2.2rem;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(76, 201, 167, 0.13);
}

.ta-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.2rem;
  margin-bottom: 1rem;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.ta-badge {
  margin-bottom: 0;
}

.pub-item {
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-links {
  display: grid;
  gap: 0.8rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: var(--panel);
  color: var(--text);
}

.contact-link i {
  color: var(--accent);
}

.page-cards {
  margin-top: 2.4rem;
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  color: var(--muted);
  text-align: center;
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  nav {
    padding: 0.9rem 1.2rem;
  }

  .hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.8rem 1.2rem 1.1rem;
    background: rgba(7, 10, 15, 0.97);
    border-bottom: 1px solid var(--line);
  }

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

  .nav-links a {
    display: block;
    padding: 0.7rem 0;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-top: 3rem;
    text-align: center;
  }

  .hero-bio,
  .hero-actions,
  .social-icons {
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-photo-wrap {
    order: -1;
  }

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

@media (max-width: 640px) {
  .page-section,
  .hero {
    width: min(100% - 2rem, 1120px);
  }

  main {
    padding-top: 4.5rem;
  }

  .hero {
    min-height: auto;
  }

  .news-toggle {
    grid-template-columns: 1fr auto;
  }

  .news-icon {
    display: none;
  }

  .news-details {
    margin-left: 0;
  }

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