* {
  box-sizing: border-box;
}

body, html {
  margin: 0;
  padding: 0;
  height: 100dvh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #fcedcf;
  color: #121212;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* TitleBarを下げるために余白を追加 */
#TitleBar {
  width: 100%;
  background-color: #fffbef;
  padding: 1rem 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  text-align: center;
  margin-top: 5rem;
  margin-bottom: 3rem;
}

#TitleBar h1 {
  margin: 0;
  font-weight: 700;
  font-size: 1.8rem;
  color: #ffcc00;
}

/* homeMenuを中央寄せかつ縦方向中央に配置し、枠と背景を追加 */
#homeMenu {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 90vw;
  max-width: 400px;
  margin-top: auto;
  margin-bottom: auto;

  /* 枠線と背景色 */
  background-color: #fffbef;
  border: 2px solid rgba(255, 204, 0, 0.5);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  box-shadow: 0 4px 12px rgba(255, 204, 0, 0.2);
}

.btn {
  background-color: #ffcc00;
  color: #121212;
  border: none;
  border-radius: 8px;
  padding: 1rem 0;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
  width: 100%;
  box-shadow: 0 4px 8px rgba(255, 204, 0, 0.4);
}

.btn:hover {
  background-color: #ddb800;
}

/* スマホ対応 */
@media (max-width: 480px) {
  #homeMenu {
    width: 95vw;
  }
  .btn {
    font-size: 1rem;
  }
}