body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: white;
}

.container {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.demo-button {
  background: linear-gradient(45deg, #ff6b6b, #ee5a24);
  border: none;
  padding: 1rem 2rem;
  border-radius: 10px;
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.demo-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.demo-button.secondary {
  background: linear-gradient(45deg, #74b9ff, #0984e3);
}

.demo-button.tertiary {
  background: linear-gradient(45deg, #00b894, #00a085);
}

.demo-button.quaternary {
  background: linear-gradient(45deg, #fdcb6e, #e17055);
}

.events-log {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 1rem;
  margin-top: 2rem;
  min-height: 200px;
  overflow-y: auto;
}

.events-log h3 {
  margin-top: 0;
  color: #74b9ff;
}

.event-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5rem;
  margin: 0.5rem 0;
  border-radius: 5px;
  font-family: monospace;
  font-size: 0.9rem;
}

.clear-log {
  background: linear-gradient(45deg, #636e72, #2d3436);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  color: white;
  cursor: pointer;
  margin-top: 1rem;
}