body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #4facfe, #00f2fe);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  width: 100%;
  max-width: 350px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

h2 {
  margin-bottom: 1.5rem;
}

input {
  width: 100%;
  padding: 0.8rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
}

button, .btn {
  background: #4facfe;
  color: white;
  padding: 0.8rem 1.2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button:hover, .btn:hover {
  background: #00c6ff;
}

@media (max-width: 480px) {
  .container {
    padding: 1.5rem;
  }
  h2 {
    font-size: 1.2rem;
  }
}