* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  touch-action: manipulation;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
    Cantarell, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
  touch-action: manipulation;
}

.container {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

h1 {
  text-align: center;
  color: #333;
  margin-bottom: 30px;
  font-size: 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: 15px;
  max-width: 600px;
}

button {
  width: 10rem;
  padding: 20px;
  aspect-ratio: 1;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.4);
}

audio {
  display: none;
}

@media (max-width: 600px) {
  body {
    padding: 0;
  }

  .container {
    width: 100vw;
    height: 100vh;
    padding: 20px;
    border-radius: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  button {
    width: 25vw;
    font-size: 12px;
  }
}