.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f8f9fa;
  border-radius: 12px;
  padding: 32px;
  margin: 32px 0;
  border: 2px solid #e9ecef;
}

.container h2 {
  font-size: 3em;
  margin: 0 0 8px 0;
  color: #1976d2;
  font-weight: 300;
}

h1 {
  margin-bottom: 16px;
}

p {
  color: #666;
  margin-bottom: 32px;
}

.container .even-odd-indicator {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 12px;
  border-radius: 16px;
  font-size: 0.8em;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.even-odd-indicator.even {
  background: #e8f5e8;
  color: #2e7d32;
}

.even-odd-indicator.odd {
  background: #fff3e0;
  color: #ef6c00;
}

.buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
}

button {
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: #1976d2;
  color: white;
  font-size: 1.5em;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

button:hover {
  background: #1565c0;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

button:active {
  transform: translateY(0);
}
