:root {
  --primary: #0070f3;
  --bg: #ffffff;
  --text: #111111;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid #eaeaea;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

button {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  cursor: pointer;
}