:root {
  --bg: #0f0f14;
  --fg: #f5f5f7;
  --muted: #8a8a9b;
  --accent: #4f7cff;
}

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

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

header {
  position: sticky;
  top: 0;
  display:flex;
  justify-content:space-between;
  padding: 1rem 2rem;
  background: rgba(15,15,20,0.9);
  backdrop-filter: blur(10px);
}

nav a {
  margin-left:1.5rem;
  text-decoration:none;
  color: var(--fg);
  font-weight:500;
}

nav a:hover {
  color: var(--accent);
}

section {
  padding: 5rem 2rem;
  max-width: 1000px;
  margin:auto;
}

.hero {
  text-align:center;
  padding-top:7rem;
}

h1 { font-size:3rem; }
h2 { margin-bottom:1rem; }

#portfolio-items div {
  margin-bottom:1rem;
  padding:1rem;
  border:1px solid #222;
  border-radius:8px;
}

footer {
  text-align:center;
  padding:2rem;
  color: var(--muted);
}

.social a {
  margin:0 1rem;
  color: var(--fg);
  text-decoration:none;
}

.social a:hover {
  color: var(--accent);
}

/* Responsive */
@media(max-width:768px){
  h1 {font-size:2.2rem;}
  nav {font-size:0.9rem;}
}