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

:root {
  --bg: #0b0f19;
  --card: #131a2a;
  --text: #e6e9f0;
  --muted: #8b93a7;
  --accent: #38bdf8;
}

html { scroll-behavior: smooth; }

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

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

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.2rem 8%;
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #1e2638;
}
.logo { font-weight: 800; font-size: 1.3rem; }
.logo span { color: var(--accent); }
.nav ul { display: flex; gap: 1.8rem; list-style: none; }
.nav ul a { color: var(--muted); font-weight: 500; transition: color .2s; }
.nav ul a:hover { color: var(--accent); }

.hero {
  min-height: 85vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 8%;
  background: radial-gradient(circle at 80% 20%, rgba(56,189,248,.15), transparent 50%);
}
.tag { color: var(--accent); font-weight: 600; margin-bottom: .5rem; }
.hero h1 { font-size: clamp(2.5rem, 7vw, 4.5rem); font-weight: 800; line-height: 1.1; }
.hero h2 { font-size: clamp(1.2rem, 3vw, 1.8rem); color: var(--muted); font-weight: 500; margin: .5rem 0 1.2rem; }
.desc { max-width: 560px; color: var(--muted); }

.cta { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }
.btn {
  padding: .8rem 1.6rem; border-radius: 10px;
  border: 1px solid #2a3449; font-weight: 600; transition: all .2s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); color: #0b0f19; border-color: var(--accent); }
.btn.primary:hover { opacity: .85; color: #0b0f19; }

.section { padding: 5rem 8%; }
.section h3 { font-size: 2rem; margin-bottom: 1rem; }
.section > p { color: var(--muted); max-width: 640px; }

.skills { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.5rem; }
.skills span {
  background: var(--card); border: 1px solid #1e2638;
  padding: .4rem 1rem; border-radius: 999px; font-size: .9rem;
}

.grid {
  display: grid; gap: 1.5rem; margin-top: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card {
  background: var(--card); border: 1px solid #1e2638;
  padding: 1.8rem; border-radius: 14px; transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }
.card h4 { font-size: 1.2rem; margin-bottom: .5rem; }
.card p { color: var(--muted); margin-bottom: 1rem; }
.card a { color: var(--accent); font-weight: 600; }

.links { display: flex; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap; }
.links a {
  padding: .7rem 1.4rem; border-radius: 10px;
  background: var(--card); border: 1px solid #1e2638; transition: border-color .2s;
}
.links a:hover { border-color: var(--accent); color: var(--accent); }

footer { text-align: center; padding: 2rem; color: var(--muted); border-top: 1px solid #1e2638; }

@media (max-width: 600px) {
  .nav ul { gap: 1rem; font-size: .9rem; }
}