:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --border: #21262d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-2: #3fb950;
  --radius: 10px;
  --max: 980px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--text); }
.brand span { color: var(--accent); }
.nav nav { display: flex; gap: 1.5rem; align-items: center; }
.nav nav a { color: var(--muted); font-size: .95rem; }
.nav nav a:hover { color: var(--text); text-decoration: none; }
.nav nav a.cta { color: var(--accent); }

/* Layout */
main { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }

/* Hero */
.hero { padding: 6rem 0 4rem; }
.kicker {
  display: inline-block;
  font-size: .8rem;
  color: var(--accent-2);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 1rem;
}
.hero h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); font-weight: 700; line-height: 1.2; }
.muted { color: var(--muted); font-weight: 500; }
.lead { margin-top: 1.5rem; color: var(--muted); max-width: 620px; font-size: 1.1rem; }
.hero-actions { margin-top: 2rem; display: flex; gap: 1rem; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-block;
  padding: .7rem 1.3rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 500;
  transition: filter .15s;
}
.btn:hover { filter: brightness(1.1); text-decoration: none; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--muted); }

/* Sections */
.section { padding: 3rem 0; border-top: 1px solid var(--border); }
.section h2 { font-size: 1.5rem; margin-bottom: 1.2rem; }
.section p { color: var(--muted); max-width: 680px; }

.facts { list-style: none; margin-top: 1.5rem; display: grid; gap: .8rem; }
.facts li { padding-left: 1.2rem; position: relative; color: var(--muted); }
.facts li::before { content: '▹'; position: absolute; left: 0; color: var(--accent); }
.facts strong { color: var(--text); }

/* Projects grid */
.grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { font-size: 1rem; margin-bottom: .4rem; font-family: 'JetBrains Mono', monospace; }
.card p { font-size: .9rem; margin-bottom: .8rem; }
.card a { font-size: .85rem; font-weight: 500; }

.badge {
  display: inline-block;
  font-size: .7rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-2);
  border: 1px solid var(--accent-2);
  padding: .15rem .5rem;
  border-radius: 4px;
}

/* Chips */
.chips { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: .6rem; }
.chips span {
  font-size: .85rem;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: .4rem .8rem;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
}

/* Contact */
.contact { text-align: center; padding: 5rem 0; }
.contact p { margin: 0 auto 1.5rem; }
.contact .btn { font-family: 'JetBrains Mono', monospace; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: .85rem;
}

@media (max-width: 600px) {
  .nav { padding: 1rem; }
  .nav nav { gap: 1rem; }
  .nav nav a:not(.cta) { display: none; }
  main { padding: 0 1.2rem; }
  .hero { padding: 4rem 0 2rem; }
}