:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  max-width: 640px;
  margin: 4rem auto;
  padding: 0 1.5rem;
  line-height: 1.5;
}

h1 {
  font-size: 1.5rem;
}

.login-options {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border-radius: 0.5rem;
  text-decoration: none;
  color: #fff;
  font-weight: 600;
}

.btn-google {
  background: #4285f4;
}

.btn-github {
  background: #24292e;
}

#logout-form button {
  margin-top: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid #ccc;
  background: transparent;
  cursor: pointer;
}