:root{
  --bg:#ffffff;
  --surface:#f8fafc;
  --text:#0f172a;
  --muted:#475569;
  --border:#e5e7eb;
  --accent:#0a66c2;        /* LinkedIn-like blue */
  --accent-soft:#e8f2ff;
  --shadow:0 10px 22px rgba(15,23,42,.08);
  --max:980px;
  --radius:14px;
}

*{ box-sizing:border-box; }

body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
}

header, main, footer{
  max-width:var(--max);
  margin:0 auto;
  padding:22px;
}

/* Top nav (simple) */
.nav{
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav-inner{
  max-width:var(--max);
  margin:0 auto;
  padding:12px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.nav a{
  color:var(--muted);
  text-decoration:none;
  font-weight:600;
  margin-left:14px;
}
.nav a:hover{ color:var(--accent); }

.brand{
  font-weight:800;
  color:var(--text);
  letter-spacing:-.01em;
}

header{ padding-top:30px; }

hr{
  border:none;
  border-top:1px solid var(--border);
  margin:18px 0;
}

h1{
  margin:0 0 6px 0;
  font-size:2.2rem;
  letter-spacing:-.02em;
}

.subtitle{
  margin:6px 0;
  color:var(--muted);
}

h2{
  margin:20px 0 10px;
  font-size:1.35rem;
  letter-spacing:-.01em;
}

h3{
  margin:10px 0 8px;
  font-size:1.05rem;
}

/* Cards */
section{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  margin:14px 0;
  box-shadow:var(--shadow);
}

/* Two-column layout for skills/project (desktop) */
.grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:14px;
}

ul{ margin:10px 0 0; padding-left:18px; }
li{ margin:6px 0; }

a{
  color:var(--accent);
  text-decoration:none;
  border-bottom:1px solid transparent;
}
a:hover{ border-bottom-color:var(--accent); }

.badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:12px;
}

.badge{
  padding:6px 10px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--accent);
  border:1px solid #cfe3ff;
  font-size:.92rem;
}

/* Buttons */
.actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:14px;
}

.btn{
  padding:10px 14px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  font-weight:600;
}
.btn.primary{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn:hover{ filter:brightness(.98); }

.small{
  font-size:.95rem;
  color:var(--muted);
}

footer{
  color:var(--muted);
  font-size:.95rem;
  padding-bottom:40px;
}

@media (max-width:850px){
  .grid{ grid-template-columns: 1fr; }
}

@media (max-width:600px){
  header, main, footer{ padding:16px; }
  .nav-inner{ padding:10px 16px; }
  h1{ font-size:1.85rem; }
  section{ padding:14px; }
}