html,
body {
  height: -webkit-fill-available;
  overflow-y: scroll;
  overflow: hidden;
  height: 100%;
  padding-top: 50px;

  /* ← fixed-top ナビバーの高さぶん */

}

#HeaderPanel {
  top: 40px;
}

#splitContainer {
  display: flex;
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  height: 100%;
}

#leftPane {
  width: 30%;
  min-width: 200px;
  max-width: 80%;
  overflow-y: auto;
  background: #fafafa;
  border-right: 1px solid #ccc;
  height: calc(100vh-10px);
}

#divider {
  width: 5px;
  background: #ddd;
  cursor: col-resize;
  transition: background 0.2s;
}

#divider:hover,
#divider.dragging {
  background: #999;
}

#rightPane {
  flex: 1;
  overflow-y: auto;
}

#NameList .list-group-item.active {
  background-color: #007bff;
  color: white;
}

h2 {
  color: #000066;
  /* より深い紺色 */
  text-shadow: 0 0 6px white;
  padding: 0.4em 0.6em;
  font-size: 24px;
  font-weight: bold;
  text-align: center;
  border-radius: 6px;
  background: -webkit-repeating-linear-gradient(-45deg,
      #b3d9ff,
      #b3d9ff 4px,
      #e0f0ff 4px,
      #e0f0ff 10px);
  background: repeating-linear-gradient(-45deg,
      #b3d9ff,
      #b3d9ff 4px,
      #e0f0ff 4px,
      #e0f0ff 10px);
  border: 1px solid #99ccff;
}

h3 {
  color: #010079;
  text-shadow: 0 0 5px white;
  padding: 0.3em 0.5em;
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  background: -webkit-repeating-linear-gradient(-45deg, #cce7ff, #cce7ff 3px, #e9f4ff 3px, #e9f4ff 7px);
  background: repeating-linear-gradient(-45deg, #cce7ff, #cce7ff 3px, #e9f4ff 3px, #e9f4ff 7px);
  margin-top: 0.4em;
  /* 上の余白（控えめに） */
  margin-bottom: 0.4em;
  /* 下の余白を小さく */
  line-height: 1.3;
  /* 行間を少し詰めてスッキリ */
}

.diff-result ins {
  background-color: #e6ffe6;
  /* 追加部分：淡い緑 */
  text-decoration: none;
}

.diff-result del {
  background-color: #ffe6e6;
  /* 削除部分：淡い赤 */
  text-decoration: line-through;
}

.diff-result {
  white-space: pre-wrap;
  /* 改行を維持して表示 */
  font-family: "Meiryo", sans-serif;
  font-size: 15px;
}