:root {
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --accent: #00b4d8;
  --muted: #8b949e;
}

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

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

header {
  text-align: center;
  padding: 50px 20px;
  background: linear-gradient(135deg, #00b4d8, #0077b6);
  color: white;
  border-bottom-left-radius: 40px;
  border-bottom-right-radius: 40px;
}
header h1 { font-size: 2.2rem; }
header p { 
    font-size: 1rem; 
    opacity: 0.9; 
}

main {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 30px;
}
section {
  background: var(--card);
  border-radius: 18px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}
h2 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
  padding-bottom: 4px;
}
ul { list-style: none; }
ul li { margin-bottom: 8px; }
a { color: var(--accent); text-decoration: none; }
.skills span {
  display: inline-block;
  background: #00b4d822;
  padding: 6px 10px;
  margin: 5px;
  border-radius: 8px;
  font-size: 0.9rem;
}
footer {
  text-align: center;
  margin: 40px 0 20px;
  font-size: 0.9rem;
  color: var(--muted);
}
button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s;
}
button:hover { background: #0096c7; }
@media (max-width: 768px) {
  main { grid-template-columns: 1fr; }
  header h1 { font-size: 1.8rem; }
}