body {
  font-family: system-ui, sans-serif;
  background: #f2f2f5;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

.card {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  width: 300px;
}

h1 {
  margin-top: 0;
  font-size: 1.4rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

label {
  font-size: 0.85rem;
  color: #333;
}

input {
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

button {
  padding: 0.5rem;
  background: #4a4af2;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background: #3a3ad9;
}

.hidden {
  display: none;
}

#message {
  font-size: 0.9rem;
  min-height: 1.2rem;
}