body {
  font-family: Arial, sans-serif;
  background: linear-gradient(to right, #141e30, #243b55);
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  padding: 2rem 3rem;
  border-radius: 1rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

h1 {
  margin-bottom: 0.5rem;
}

form {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

input[type="email"] {
  padding: 0.75rem;
  width: 250px;
  border: none;
  border-radius: 0.5rem;
  outline: none;
}

button {
  background: #00c6ff;
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #0072ff;
}

#response-message {
  margin-top: 1rem;
  font-size: 0.9rem;
}