/* 全体レイアウト */
body {
  margin: 0;
  padding: 0;
  background: #f0f3f7;
  font-family: "Segoe UI", sans-serif;
  color: #333;
}

/* ヘッダー */
header {
  text-align: center;
  background: #4a90e2;
  padding: 20px;
  color: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

header h1 {
  margin: 0;
  font-size: 26px;
}

/* グループ名カード */
.group-card {
  width: 90%;
  max-width: 480px;
  margin: 16px auto;
  background: #ffffff;
  padding: 12px 18px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  font-size: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.group-card .label {
  font-weight: bold;
  color: #4a4a4a;
}

.group-card .value {
  margin-left: 8px;
  color: #2b7efc;
  font-weight: bold;
}

/* 地図の大きさを小さめ（50vh）に */
#map {
  width: 92%;
  height: 50vh;
  margin: 0 auto 30px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}