:root{ --fg:#111; --bg:#fff; --muted:#6b7280; --card:#f9fafb; --accent:#2563eb; }
*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; font:16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color:var(--fg); background:var(--bg); }
header{ padding:8px 16px; border-bottom:1px solid #eee; }
h1{ margin:0 0 2px; font-size:24px; }
#controls{ display:flex; flex-direction:column; gap:12px; padding:16px; border-bottom:1px solid #eee; }
.tag-filters{ display:flex; flex-direction:column; gap:8px; }
.tag-filters h3{ margin:0; font-size:16px; color:var(--fg); }
.tag-checkboxes{ display:flex; flex-direction:column; gap:8px; max-height:400px; overflow-y:auto; padding:8px; border:1px solid #eee; border-radius:8px; background:#fafafa; }
.author-checkboxes{ display:flex; flex-direction:column; gap:8px; max-height:400px; overflow-y:auto; padding:8px; border:1px solid #eee; border-radius:8px; background:#fafafa; }
.venue-checkboxes{ display:flex; flex-direction:column; gap:8px; max-height:400px; overflow-y:auto; padding:8px; border:1px solid #eee; border-radius:8px; background:#fafafa; }

.category-header {
  font-weight: bold;
  font-size: 14px;
  color: #000;
  margin: 4px 0 2px 0;
  padding: 4px 0;
}

.category-tags {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}
.tag-checkbox{ display:flex; align-items:center; gap:6px; cursor:pointer; padding:4px 6px; border-radius:4px; transition:background-color 0.2s; }
.tag-checkbox:hover{ background:#f0f0f0; }
.tag-checkbox input[type="checkbox"]{ margin:0; }
.tag-text{ font-size:13px; color:var(--fg); }
.author-checkbox{ display:flex; align-items:center; gap:6px; cursor:pointer; padding:4px 6px; border-radius:4px; transition:background-color 0.2s; }
.author-checkbox:hover{ background:#f0f0f0; }
.author-checkbox input[type="checkbox"]{ margin:0; }
.author-text{ font-size:13px; color:var(--fg); }
.venue-checkbox{ display:flex; align-items:center; gap:6px; cursor:pointer; padding:4px 6px; border-radius:4px; transition:background-color 0.2s; }
.venue-checkbox:hover{ background:#f0f0f0; }
.venue-checkbox input[type="checkbox"]{ margin:0; }
.venue-text{ font-size:13px; color:var(--fg); }
#controls button{ padding:8px 12px; border:1px solid #ddd; border-radius:8px; background:#fff; cursor:pointer; align-self:flex-start; }
.filter-help{ color:var(--muted); font-size:12px; }
#stats{ display:grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap:12px; padding:12px 16px; }

/* タブナビゲーション */
.tabs{ display:flex; gap:0; padding:0 16px; border-bottom:1px solid #eee; background:#fafafa; }
.tab-btn{ flex:1; padding:12px 16px; border:none; background:transparent; cursor:pointer; font-size:14px; font-weight:500; color:var(--muted); border-bottom:2px solid transparent; transition:all 0.2s; }
.tab-btn:hover{ background:#f0f0f0; color:var(--fg); }
.tab-btn.active{ color:var(--accent); border-bottom-color:var(--accent); background:#fff; }

/* タブコンテンツ */
.tab-content{ display:none; padding:16px; }
.tab-content.active{ display:block; }

/* チャートコンテナ */
.chart-container{ margin-bottom:32px; }
.chart-container h3{ margin:0 0 16px; font-size:18px; color:var(--fg); }

/* 論文一覧ヘッダー */
.papers-header{ display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; }
.papers-header h2{ margin:0; }
.sort-controls{ display:flex; align-items:center; gap:8px; }
.sort-label{ font-size:14px; color:var(--muted); }
.sort-btn{ padding:6px 12px; border:1px solid #ddd; border-radius:6px; background:#fff; cursor:pointer; font-size:13px; color:var(--muted); transition:all 0.2s; }
.sort-btn:hover{ background:#f9f9f9; color:var(--fg); }
.sort-btn.active{ background:var(--accent); color:#fff; border-color:var(--accent); }

/* フィルター開閉機能 */
.filter-section{ margin-bottom:16px; }
.filter-toggle{ display:flex; align-items:center; gap:8px; padding:8px 12px; border:1px solid #ddd; border-radius:8px; background:#fff; cursor:pointer; font-size:14px; color:var(--fg); }
.filter-toggle:hover{ background:#f9f9f9; }
.toggle-icon{ transition:transform 0.2s; }
.filter-content{ overflow:hidden; transition:max-height 0.3s ease; }
.filter-content.collapsed{ max-height:0; }
.filter-content.expanded{ max-height:500px; }

/* 全ての絞り込みをクリアボタン */
.clear-all-btn {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #dc2626;
  border-radius: 8px;
  background: #fff;
  color: #dc2626;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  text-align: center;
}

.clear-all-btn:hover {
  background: #dc2626;
  color: #fff;
}

.clear-all-btn:active {
  transform: translateY(1px);
}


.stat{ background:var(--card); border:1px solid #eee; border-radius:12px; padding:12px; }
.stat .k{ font-size:24px; font-weight:700; }
.stat .v{ color:var(--muted); font-size:12px; }
#charts{ display:grid; gap:16px; padding:8px 16px 16px; grid-template-columns:1fr; }
.cards{ display:grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap:12px; padding: 8px 16px 32px; }
.card{ background:#fff; border:1px solid #eee; border-radius:12px; padding:12px; display:flex; flex-direction:column; gap:8px; }
.card h3{ font-size:16px; margin:0; }
.card .meta{ color:var(--muted); font-size:12px; }
.citation-count{ color:#059669; font-size:12px; font-weight:600; margin:4px 0; }
.tags{ display:flex; flex-wrap:wrap; gap:6px; }
.tag{ font-size:11px; border:1px solid #e5e7eb; padding:2px 6px; border-radius:999px; background:#f3f4f6; }
.btn{ display:inline-block; padding:6px 10px; border:1px solid var(--accent); color:var(--accent); border-radius:8px; text-decoration:none; width:max-content; }
.btn:hover{ background:rgba(37,99,235,.06); }
footer{ padding:16px; border-top:1px solid #eee; color:var(--muted); font-size:12px; }

/* 著者一覧ページのテーブルスタイル */
.authors-table-container {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

#top-authors-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

#top-authors-table thead {
  background: #f9fafb;
  border-bottom: 2px solid #e5e7eb;
}

#top-authors-table th {
  padding: 16px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--fg);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#top-authors-table tbody tr {
  border-bottom: 1px solid #f3f4f6;
  transition: background-color 0.2s ease;
}

#top-authors-table tbody tr:hover {
  background-color: #f9fafb;
}

#top-authors-table tbody tr:last-child {
  border-bottom: none;
}

#top-authors-table td {
  padding: 16px 12px;
  vertical-align: middle;
}

/* ランクセル */
.rank-cell {
  width: 80px;
  text-align: center;
}

.author-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  color: white;
  border-radius: 50%;
  font-weight: bold;
  font-size: 14px;
}

/* 著者名セル */
.name-cell {
  min-width: 200px;
}

.author-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  cursor: pointer;
  transition: color 0.2s ease;
}

.author-name:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* 論文数セル */
.papers-cell {
  width: 120px;
  text-align: center;
}

.paper-count {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #059669;
  font-weight: 600;
  font-size: 14px;
}

/* 平均被引用数セル */
.avg-citations-cell {
  width: 120px;
  text-align: center;
}

.avg-citations {
  color: #dc2626;
  font-weight: 600;
  font-size: 14px;
}

/* 総被引用数セル */
.total-citations-cell {
  width: 120px;
  text-align: center;
}

.total-citations {
  color: var(--fg);
  font-weight: 600;
  font-size: 14px;
}

/* タグセル */
.tags-cell {
  min-width: 200px;
}

.tags-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tag-badge {
  display: inline-block;
  background: #f3f4f6;
  color: var(--fg);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #e5e7eb;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tag-badge:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* 著者一覧ページのヘッダー */
.authors-header {
  margin-bottom: 24px;
  text-align: center;
}

.authors-header h2 {
  margin: 0 0 8px 0;
  font-size: 24px;
  color: var(--fg);
}

.authors-description {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .authors-header {
    text-align: left;
  }
  
  .authors-table-container {
    font-size: 12px;
  }
  
  #top-authors-table th,
  #top-authors-table td {
    padding: 12px 8px;
  }
  
  .author-rank {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  
  .author-name {
    font-size: 14px;
  }
  
  .paper-count,
  .avg-citations,
  .total-citations {
    font-size: 12px;
  }
  
  .tag-badge {
    font-size: 10px;
    padding: 1px 4px;
  }
}