/* Reset & base */
* {
  margin: 0; padding: 0; box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f8f9fa;
  color: #333;
}
header {
  background: #0f172a;
  color: white;
  padding: 20px;
  text-align: center;
}
header nav a {
  color: #94a3b8;
  margin: 0 10px;
  text-decoration: none;
  font-weight: bold;
}
header nav a:hover {
  color: #fff;
}
section {
  padding: 40px 20px;
  max-width: 800px;
  margin: auto;
}
h2 {
  margin-bottom: 20px;
  color: #0f172a;
}
.project-card {
  background: white;
  margin-bottom: 20px;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
ul {
  list-style: none;
}
ul li::before {
  content: \"✔ \";
  color: #0f172a;
}
footer {
  text-align: center;
  padding: 20px;
  background: #0f172a;
  color: white;
  margin-top: 40px;
}
/* Back to top button */
#backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
  background: #0f172a;
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 6px;
  cursor: pointer;
}
#backToTop:hover {
  background: #1e293b;
}