/* 共通サイドバー用CSS */
body {
  display: flex;
  min-height: 100vh;
  margin: 0;
}

.sidebar {
  width: 220px;
  background: #f0f0f0;
  padding: 0 0 20px 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar button {
  margin: 10px 20px;
  padding: 10px;
  font-size: 16px;
  cursor: pointer;
  border: 1px solid #ccc;
  background: #fff;
  border-radius: 4px;
  text-align: left;
  min-width: 160px;
  transition: background 0.2s;
}

.sidebar button.active {
  background: #ffdddd;
  color: #000;
  font-weight: bold;
}

.content {
  flex: 1;
  padding: 40px;
  margin-left: 220px;
}