body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f7fa;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  width: 350px;
  text-align: center;
}

h1 {
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: #333;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

input {
  padding: 0.6rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

button {
  padding: 0.7rem;
  background: #0070f3;
  color: white;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #005ad0;
}

pre {
  text-align: left;
  background: #f0f0f0;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.9rem;
}