* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  line-height: 1.5;
  background: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 20px;
}
header {
  text-align: center;
  margin-bottom: 30px;
}
header h1 {
  font-size: 32px;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
header p {
  font-size: 16px;
  color: #555;
}
nav {
  text-align: center;
  margin-bottom: 40px;
}
nav a {
  text-decoration: none;
  color: #0070f3;
  font-weight: bold;
  margin: 0 12px;
  padding: 6px 10px;
  border-radius: 4px;
  transition: background 0.2s;
}
nav a:hover {
  background: #f0f0f0;
}
section {
  max-width: 700px;
  margin: 0 auto 40px auto;
  text-align: center;
}
section#about p {
  font-size: 15px;
  color: #333;
}
section#projects h2 {
  font-size: 18px;
  margin-bottom: 12px;
  border-bottom: 1px solid #333;
  display: inline-block;
  padding-bottom: 4px;
  letter-spacing: 0.8px;
}
section#projects ul {
  list-style-type: none;
  margin-top: 12px;
}
section#projects li {
  margin-bottom: 10px;
  font-size: 14.5px;
}
section#projects li a {
  color: #0070f3;
  text-decoration: none;
}
section#projects li a:hover {
  text-decoration: underline;
}
footer {
  text-align: center;
  margin-top: auto;
  padding-top: 20px;
  font-size: 13px;
  color: #555;
}