:root {
  --bg: #0f172a;
  --bg-soft: #111c36;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --surface: #f8fafc;
  --white: #ffffff;
  --border: #dbe3ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--surface);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.hero {
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg-soft) 100%);
  color: var(--white);
  padding-bottom: 3rem;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: #e2e8f0;
  text-decoration: none;
  font-weight: 500;
}

.hero-content {
  padding: 3rem 0 2rem;
}

.kicker {
  color: #bfdbfe;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  margin: 0;
  max-width: 18ch;
}

.summary {
  max-width: 60ch;
  color: #d9e5ff;
  margin: 1rem 0 1.8rem;
}

.actions,
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  text-decoration: none;
  padding: 0.68rem 1rem;
  border-radius: 0.65rem;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: rgba(148, 163, 184, 0.18);
  color: var(--white);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.section {
  padding: 4rem 0;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.section-heading p {
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1.2rem;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.card h3 {
  margin-top: 0;
}

.card a {
  color: var(--brand);
  font-weight: 600;
  text-decoration: none;
}

.project ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.highlight {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1.2rem;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

@media (max-width: 700px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

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