:root {
  --bg: #0f172a;
  --bg-soft: #111827;
  --card: #1e293b;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-dark: #0284c7;
  --border: #334155;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.hero {
  min-height: 85vh;
  padding: 24px;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.25), transparent 35%),
    linear-gradient(135deg, #020617, #0f172a 60%, #1e293b);
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #020617;
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 20px;
  color: var(--muted);
}

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

.hero-content {
  max-width: 1100px;
  margin: 140px auto 0;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
  font-weight: 700;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1;
  margin: 10px 0 20px;
}

.subtitle {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.25rem;
  line-height: 1.6;
}

.hero-buttons {
  margin-top: 32px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
}

.btn.primary {
  background: var(--accent);
  color: #020617;
}

.btn.primary:hover {
  background: var(--accent-dark);
  color: white;
}

.btn.secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.section p {
  color: var(--muted);
  line-height: 1.7;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 22px;
  transition: transform 0.2s, border-color 0.2s;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.project-category {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.project-card h3 {
  margin: 12px 0;
  font-size: 1.3rem;
}

.project-card p {
  color: var(--muted);
}

.project-links {
  display: flex;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.project-links a {
  color: var(--accent);
  font-weight: 700;
}

.contact {
  text-align: center;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 700px) {
  .navbar {
    align-items: flex-start;
    gap: 20px;
  }

  .nav-links {
    flex-direction: column;
    gap: 10px;
  }

  .hero-content {
    margin-top: 80px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}