/* メモマネージャースタイル（モノトーン調） */
  .memo-manager {
    width: 80vw;
    height: 80vh;
    padding: 20px;
    max-width: 1１200px;
    margin: 0 auto;
    background-color: #f8f8f8; /* 明るい灰色 */
    border-radius: 15px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
  }

  .memo-manager header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #ddd;
  }

  .header-nav {
    display: flex;
    gap: 10px;
  }

  .dashboard-button {
    padding: 10px 15px;
    background-color: #4a90e2;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    color: white;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
  }

  .dashboard-button:hover {
    background-color: #357abd;
  }

  .dashboard-button-link {
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 11px;
    padding: 2px 4px;
    border-radius: 5px;
    transition: background-color 0.3s;
  }

  .dashboard-button-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .memo-manager h1 {
    font-size: 32px;
    font-weight: bold;
    color: #333; /* 濃い灰色 */
    text-align: center;
    margin: 0;
    flex-grow: 1;
  }

  .memo-container {
    display: flex;
    gap: 20px;
    height: calc(100vh - 150px);
  }

  .memo-sidebar {
    width: 350px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    padding-right: 10px;
  }

  .memo-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  /* サイドバーセクションのスタイル */
  .search-section, .category-section, .template-section, .memo-list-section {
    background-color: #ffffff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
  }

  .search-section h3, .category-section h3, .template-section h3, .memo-list-section h3 {
    font-size: 14px;
    font-weight: bold;
    color: #444;
    margin-bottom: 10px;
    margin-top: 0;
  }

  .search-section input, .category-section select, .template-section select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 8px;
    box-sizing: border-box;
  }

  .search-section button, .template-section button {
    padding: 6px 12px;
    background-color: #666;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    margin-right: 5px;
    transition: background-color 0.3s;
  }

  .search-section button:hover, .template-section button:hover {
    background-color: #555;
  }

  /* メモエディター関連 */
  .memo-editor-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
  }

  .memo-editor-header label {
    font-size: 12px;
    font-weight: bold;
    color: #444;
    margin-bottom: 2px;
  }

  .memo-editor-header input, .memo-editor-header select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 12px;
  }

  .editor-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
  }

  .editor-toggle {
    padding: 6px 12px;
    background-color: #777;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    transition: background-color 0.3s;
  }

  .editor-toggle:hover {
    background-color: #666;
  }

  .editor-toggle.active {
    background-color: #4a90e2;
  }

  .content-container {
    position: relative;
    flex-grow: 1;
    margin-bottom: 15px;
  }

  #memo-content {
    width: 100%;
    height: 100%;
    min-height: 400px;
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 5px;
    resize: vertical;
    background-color: #ffffff;
    color: #333;
    font-family: 'Consolas', 'Monaco', monospace;
    box-sizing: border-box;
  }

  .markdown-preview {
    width: 100%;
    height: 100%;
    min-height: 400px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #ffffff;
    overflow-y: auto;
    box-sizing: border-box;
  }

  /* マークダウンプレビューのスタイル */
  .markdown-preview h1, .markdown-preview h2, .markdown-preview h3 {
    color: #333;
    margin-top: 20px;
    margin-bottom: 10px;
  }

  .markdown-preview h1 { font-size: 24px; }
  .markdown-preview h2 { font-size: 20px; }
  .markdown-preview h3 { font-size: 16px; }

  .markdown-preview p {
    line-height: 1.6;
    margin-bottom: 10px;
  }

  .markdown-preview ul, .markdown-preview ol {
    margin-left: 20px;
    margin-bottom: 10px;
  }

  .markdown-preview code {
    background-color: #f5f5f5;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Consolas', 'Monaco', monospace;
  }

  .markdown-preview pre {
    background-color: #f5f5f5;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 10px;
  }

  .markdown-preview blockquote {
    border-left: 4px solid #ddd;
    margin-left: 0;
    padding-left: 15px;
    color: #666;
  }

  #memo-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 300px;
    overflow-y: auto;
  }

  #memo-list li {
    font-size: 12px;
    color: #333;
    margin: 5px 0;
    padding: 8px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
    position: relative;
  }

  #memo-list li .memo-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
  }

  #memo-list li .memo-title {
    font-weight: bold;
    color: #333;
  }

  #memo-list li .memo-category {
    background-color: #6b8ca3;
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 10px;
  }

  #memo-list li .memo-tags {
    font-size: 10px;
    color: #666;
    margin-top: 2px;
  }

  #memo-list li .memo-preview {
    font-size: 11px;
    color: #666;
    margin-top: 4px;
    max-height: 40px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .memo-list li.completed {
    text-decoration: line-through;
    text-decoration-thickness: 3px; /* 太い取り消し線 */
    color: #999; /* 中間の灰色 */
    background-color: #e0e0e0; /* 完了タスクの背景色 */
  }

  .memo-list li:hover {
    background: #e8e8e8; /* ホバー時の薄い灰色 */
  }

  .memo-list li.selected {
    background: #d3d3d3; /* 選択中のアイテムの背景色（薄い灰色） */
    border: 2px solid #808080; /* 枠線をダークグレーに */
    color: #333; /* テキスト色を濃い灰色 */
    font-weight: bold; /* 太字で強調 */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* 影を追加して深みを出す */
    position: relative; /* バッジの位置調整 */
    transition: all 0.3s ease;
}

.memo-list li.selected::after {
    content: "選択中";
    position: absolute;
    top: 5px;
    right: 10px;
    background: #808080; /* グレーのバッジ */
    color: white;
    font-size: 12px;
    font-weight: bold;
    padding: 2px 5px;
    border-radius: 3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

  .memo-editor label {
    font-size: 16px;
    font-weight: bold;
    color: #444;
    margin-bottom: 5px;
  }

  .memo-editor input[type="text"] {
    width: 100%;
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 10px;
  }

  .button-group {
    display: flex;
    gap: 10px;
  }

  .save-button, .delete-button {
    padding: 10px 20px;
    font-size: 14px;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
  }

  .save-button {
    background-color: #777; /* さらにトーンを下げた灰色 */
  }

  .save-button:hover {
    background-color: #555; /* 濃い灰色 */
  }

  .delete-button {
    background-color: #aaa; /* トーンを下げた中間の灰色 */
  }

  .delete-button:hover {
    background-color: #888; /* さらに濃い中間の灰色 */
  }

  .delete-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
  }

  .back-button {
    padding: 10px 15px;
    background-color: #666; /* 灰色 */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    color: white;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
  }

  .back-button:hover {
    background-color: #555; /* 濃い灰色 */
  }

  .back-button-link {
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 11px; /* フォントサイズを縮小 */
    padding: 2px 4px; /* パディングを縮小 */
    border-radius: 5px; /* 角を丸くする */
    transition: background-color 0.3s;
}

.back-button-link:hover {
    background-color: #444; /* ホバー時の背景色 */
}

/* ドラッグ&ドロップスタイル */
.memo-list li {
  position: relative;
}

.memo-list li .drag-handle {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  color: #999;
  font-size: 12px;
  cursor: grab;
  user-select: none;
}

.memo-list li .drag-handle:active {
  cursor: grabbing;
}

.memo-list li.dragging {
  opacity: 0.5;
  transform: rotate(3deg);
  z-index: 1000;
}

.memo-list li.drag-over {
  background-color: #d3d3d3;
  border: 2px dashed #808080;
  transform: scale(1.02);
}