* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; background: #f0f2f5; color: #333; padding: 16px; }
.container { max-width: 1000px; margin: 0 auto; }
.topnav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.topnav-links { display: flex; gap: 8px; flex-wrap: wrap; }
.topnav-right { display: flex; gap: 8px; flex-wrap: wrap; }
.topnav a { text-decoration: none; color: #666; background: #fff; padding: 8px 18px; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); font-size: 14px; }
.topnav a:hover { color: #4f9afe; }
.topnav a.active { color: #fff; background: #4f9afe; }
h1 { font-size: 1.4em; margin-bottom: 12px; }
.card { background: #fff; border-radius: 8px; padding: 16px; margin-bottom: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
input[type="text"], input[type="password"], input[type="number"], select, textarea {
  border: 1px solid #ddd; border-radius: 6px; padding: 8px 12px; font-size: 14px; outline: none;
}
input[type="text"]:focus, input[type="number"]:focus, textarea:focus { border-color: #4f9afe; }
input[type="text"] { flex: 1; min-width: 120px; }
.btn {
  padding: 8px 16px; border: none; border-radius: 6px; cursor: pointer; font-size: 14px;
  background: #4f9afe; color: #fff; transition: background 0.2s;
}
.btn:hover { background: #3a8bef; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger { background: #e74c3c; }
.btn-danger:hover { background: #c0392b; }
.btn-success { background: #27ae60; }
.btn-success:hover { background: #229954; }
.btn-outline { background: #fff; color: #666; border: 1px solid #ddd; }
.btn-outline:hover { background: #f5f5f5; }
.status-bar { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.nb-badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: 12px; font-size: 13px; background: #e8f0fe; color: #3a8bef; }
.nb-badge.stale { background: #fff3e0; color: #e65100; }
.nb-badge.no-index { background: #fce4ec; color: #c62828; }
.nb-badge.ok { background: #e8f5e9; color: #2e7d32; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #eee; font-size: 14px; }
th { color: #999; font-weight: 500; font-size: 12px; text-transform: uppercase; }
td .id { font-family: monospace; font-size: 12px; color: #999; }
td .nb { font-size: 12px; color: #3a8bef; }
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 12px; }
.hidden { display: none !important; }
.login-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 999; }
.login-box { background: #fff; padding: 24px; border-radius: 12px; text-align: center; }
.login-box input { margin: 8px 0; }
.score { color: #999; font-size: 12px; }
textarea { width: 100%; resize: vertical; }
textarea::placeholder { color: #bbb; }
.add-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 8px; }
.add-form input { width: 100%; }
@media (max-width: 600px) { .add-form { grid-template-columns: 1fr; } }

/* 选项卡（笔记本管理页） */
.tabbar { display: flex; gap: 8px; margin-bottom: 14px; border-bottom: 1px solid #eee; padding-bottom: 8px; }
.tab {
  padding: 6px 18px; border: none; border-radius: 6px; cursor: pointer; font-size: 14px;
  background: #f0f2f5; color: #666;
}
.tab:hover { background: #e3e7ee; }
.tab.active { background: #4f9afe; color: #fff; }

/* 导入/导出两列：宽屏左右，窄屏上下 */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.two-col .col { background: #fafbfc; border: 1px solid #eee; border-radius: 8px; padding: 12px; }
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }

/* 长程任务提示：会占用笔记本写入锁，机器人对话侧 add/modify/delete 工具暂不可用 */
.lock-hint {
  margin: 10px 0;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: #8d6e63;
  background: #fff8e1;
  border: 1px solid #ffe082;
}