body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.6;
  color: #333;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: white;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-weight: bold;
  font-size: 1.2rem;
}

.logo span {
  color: #2a9df4;
}

nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: #333;
}

.hero {
  padding: 4rem 2rem;
  text-align: center;
  background: #f9f9f9;
}

.hero h1 span {
  color: #2a9df4;
}

.hero-buttons {
  margin-top: 1.5rem;
}

.btn-primary, .btn-secondary {
  padding: 0.7rem 1.5rem;
  text-decoration: none;
  margin: 0 0.5rem;
  border-radius: 5px;
}

.btn-primary {
  background: orange;
  color: white;
}

.btn-secondary {
  border: 1px solid #2a9df4;
  color: #2a9df4;
}

.about, .projects, .contact {
  padding: 3rem 2rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.project-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  margin-bottom: 1rem;
}

.contact {
  background: #333;
  color: white;
  text-align: center;
}

.contact a {
  color: #2a9df4;
  font-weight: bold;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #222;
  color: white;
}