:root {
  --bg: #f4f4f5;
  --fg: #111827;
  --accent: #3b82f6;
  --card-bg: white;
  --radius: 1rem;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  text-align: center;
}

.card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  max-width: 90%;
  width: 400px;
  transition: all 0.3s ease-in-out;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

p {
  font-size: 1.1rem;
  color: #4b5563;
}

.logo {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

@media (max-width: 500px) {
  h1 {
    font-size: 1.5rem;
  }
  p {
    font-size: 1rem;
  }
}