body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: #f5f5f7;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

body.dark {
  background-color: #1c1c1e;
  color: #f5f5f7;
}

.container {
  text-align: center;
  background: rgba(255,255,255,0.8);
  padding: 20px 40px;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  transition: background 0.3s, color 0.3s;
}

body.dark .container {
  background: rgba(28,28,30,0.9);
  color: #f5f5f7;
}

.title {
  margin-bottom: 20px;
  color: #333;
}

body.dark .title {
  color: #f5f5f7;
}

#gameCanvas {
  background: #fff;
  border-radius: 12px;
  box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
  transition: background 0.3s;
}

body.dark #gameCanvas {
  background: #2c2c2e;
}

.controls {
  margin-top: 20px;
}

button {
  padding: 10px 20px;
  border: none;
  border-radius: 12px;
  background: #007aff;
  color: white;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #005bbb;
}

#score, #status {
  margin-top: 10px;
  color: #333;
}

body.dark #score, body.dark #status {
  color: #f5f5f7;
}

#darkModeBtn {
  margin-top: 15px;
  padding: 8px 16px;
  font-size: 14px;
  background: #8e8e93;
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

#darkModeBtn:hover {
  background: #636366;
}