* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #e5f2ff;
  background: #020617;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid rgba(229, 242, 255, 0.1);
  background: rgba(2, 6, 23, 0.86);
  backdrop-filter: blur(16px);
}

.nav strong {
  color: #22d3ee;
  font-size: 22px;
  font-weight: 600;
}

.nav nav {
  display: flex;
  gap: 18px;
  color: #b9c6d6;
}

main {
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 34px;
  align-items: start;
  padding: 110px 40px 80px;
  background:
    radial-gradient(circle at 18% 18%, rgba(34, 211, 238, 0.22), transparent 28%),
    radial-gradient(circle at 86% 20%, rgba(245, 158, 11, 0.18), transparent 24%),
    #020617;
}

.eyebrow {
  margin: 0 0 12px;
  color: #22d3ee;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 980px;
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 700;
  line-height: 1.05;
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
  line-height: 1.1;
}

.lead {
  max-width: 720px;
  color: #b9c6d6;
  font-size: 20px;
  line-height: 1.65;
}

.hero-actions,
.project-card div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions a,
.project-card a,
.primary {
  border: 1px solid rgba(229, 242, 255, 0.16);
  border-radius: 8px;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.06);
  font-weight: 500;
  transition: border-color 160ms ease, background 160ms ease;
}

.hero-actions a:hover,
.project-card a:hover {
  border-color: rgba(34, 211, 238, 0.5);
}

.hero-actions .primary,
.primary {
  color: #020617;
  border-color: transparent;
  background: #22d3ee;
}

.hero-actions .primary:hover,
.primary:hover {
  border-color: transparent;
  background: #67e8f9;
}

.signal {
  border: 1px solid rgba(229, 242, 255, 0.14);
  border-radius: 8px;
  padding: 28px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
  animation: float 4s ease-in-out infinite;
}

.signal span,
.project-card span {
  color: #f59e0b;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.signal strong {
  display: block;
  margin: 12px 0;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.15;
}

.signal p,
.project-card p {
  color: #b9c6d6;
  line-height: 1.6;
}

.metrics,
.projects,
.stack,
.contact {
  padding: 54px 40px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.metrics article,
.project-card,
.stack,
.contact {
  border: 1px solid rgba(229, 242, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.metrics article {
  padding: 22px;
}

.metrics strong {
  display: block;
  color: #22d3ee;
  font-size: 44px;
  font-weight: 700;
}

.metrics span {
  color: #b9c6d6;
}

.section-head {
  max-width: 760px;
  margin-bottom: 22px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.project-card {
  min-height: 260px;
  padding: 24px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.project-card:hover {
  border-color: rgba(34, 211, 238, 0.42);
  transform: translateY(-4px);
}

.project-card h3 {
  margin-top: 12px;
  font-size: 24px;
  font-weight: 600;
}

.stack {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 24px;
  margin: 0 40px 54px;
}

.stack-groups {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.chip-label {
  margin: 0 0 10px;
  color: #b9c6d6;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.chips span {
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: 999px;
  padding: 8px 14px;
  color: #22d3ee;
  background: rgba(34, 211, 238, 0.06);
  font-size: 14px;
  font-weight: 500;
  transition: background 160ms ease, border-color 160ms ease;
}

.chips span:hover {
  border-color: rgba(34, 211, 238, 0.5);
  background: rgba(34, 211, 238, 0.12);
}

.contact {
  margin: 0 40px 60px;
  text-align: center;
}

.contact h2 {
  margin-bottom: 22px;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 28px 40px;
  border-top: 1px solid rgba(229, 242, 255, 0.08);
  color: #b9c6d6;
  font-size: 14px;
}

.footer strong {
  color: #22d3ee;
  margin-right: 12px;
  font-weight: 600;
}

.footer .social {
  display: flex;
  gap: 18px;
}

.footer .social a {
  color: #b9c6d6;
  transition: color 160ms ease;
}

.footer .social a:hover {
  color: #22d3ee;
}

@keyframes float {
  50% {
    transform: translateY(-10px);
  }
}

@media (max-width: 900px) {
  .hero,
  .stack {
    grid-template-columns: 1fr;
  }

  .project-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px;
  }

  .hero,
  .metrics,
  .projects,
  .stack,
  .contact {
    padding-right: 20px;
    padding-left: 20px;
  }

  .hero {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .stack,
  .contact {
    margin-right: 20px;
    margin-left: 20px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 20px;
  }
}