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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  line-height: 1.6;
}

/* Layout */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 10%;
  border-bottom: 1px solid #21262d;
}

main {
  padding: 60px 10%;
  max-width: 900px;
  margin: auto;
}

/* Typography */
h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

p {
  color: #9da7b3;
}

/* Navigation */
nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #9da7b3;
  font-weight: 500;
  transition: 0.2s;
}

nav a:hover {
  color: #58a6ff;
}

/* Sections */
section {
  margin-bottom: 60px;
}

/* Hero */
#hero h2 {
  font-size: 32px;
}

#hero p {
  margin-top: 10px;
}

/* Projects */
.project {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid #21262d;
  border-radius: 12px;
  background: #161b22;
  transition: 0.2s;
}

.project:hover {
  border-color: #58a6ff;
  transform: translateY(-2px);
}

/* Footer */
footer {
  text-align: center;
  padding: 30px;
  border-top: 1px solid #21262d;
  color: #6e7681;
  margin-top: 40px;
}