body {
  margin: 0;
  padding: 0;
  background: radial-gradient(ellipse at top, #1a1a2e, #0f0f1a);
  color: #eee;
  font-family: 'Georgia', serif;
  text-align: center;
}

.container {
  padding: 2rem;
  max-width: 600px;
  margin: 0 auto;
}

h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  color: #c9c9ff;
}

button {
  padding: 0.75rem 1.5rem;
  font-size: 1.2rem;
  border: none;
  background-color: #8e44ad;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background-color: #a46dd3;
}

.card-area {
  margin-top: 2rem;
  animation: fadeIn 1s ease-in-out;
}

.card-area img {
  width: 200px;
  height: auto;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 8px #fff2);
}

.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}