:root {
  --primary: #3498db;
  --secondary: #2ecc71;
  --dark: #2c3e50;
  --light: #ecf0f1;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
}

header {
  background-color: var(--dark);
  color: white;
  padding: 1rem;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
}

nav ul li {
  margin: 0 1rem;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

section {
  padding: 2rem;
  min-height: 100vh;
}

#hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background-color: var(--primary);
  color: white;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.project-card {
  background: white;
  padding: 1rem;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

form {
  display: flex;
  flex-direction: column;
  max-width: 500px;
  margin: 0 auto;
}

input, textarea {
  margin-bottom: 1rem;
  padding: 0.5rem;
}

button {
  background-color: var(--secondary);
  color: white;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: var(--dark);
  color: white;
}