/* ============================================================
   讲师库（teachers.html）样式
   外壳复用 points.css（左栏 / chips / 分页器 / 骨架）
   ============================================================ */

/* ---------- 顶部数字概览 ---------- */
.tc-stat { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.tc-stat .st {
  display: flex; align-items: baseline; gap: 6px; padding: 12px 16px; min-width: 0;
  border: 1px solid var(--border); border-radius: var(--r); background: var(--bg-2);
}
.tc-stat .st b { font-size: 22px; font-weight: 800; color: var(--cyan); font-variant-numeric: tabular-nums; flex-shrink: 0; }
.tc-stat .st span { font-size: 12px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 讲师卡片（网格） ---------- */
.tc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.tc-card {
  display: flex; flex-direction: column; padding: 15px 16px 13px; cursor: pointer;
  border: 1px solid var(--border); border-radius: var(--r); background: var(--bg-2);
  transition: border-color .18s, transform .18s, box-shadow .18s;
}
.tc-card:hover { border-color: rgba(0, 212, 255, .45); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0, 0, 0, .32); }
.tc-card .hd { display: flex; align-items: center; gap: 11px; }
.tc-av {
  position: relative; width: 54px; height: 54px; flex-shrink: 0; border-radius: 50%; overflow: hidden;
  background: linear-gradient(135deg, #0891b2, #22d3ee);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; color: #041018;
}
.tc-av img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tc-card .mi, .tc-row .bd { min-width: 0; }
.tc-card .nm, .tc-row .nm { font-size: 15px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tc-card:hover .nm { color: var(--cyan); }
.tc-card .sb { font-size: 11.5px; color: var(--text-3); margin-top: 4px; }
.tc-card .bio {
  margin-top: 11px; min-height: 52px; font-size: 12px; line-height: 1.72; color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.tc-card .bio .none, .tc-row .bio .none { color: var(--text-3); font-style: italic; }
.tc-card .st { margin-top: auto; padding-top: 11px; border-top: 1px dashed rgba(30, 39, 64, .9); display: flex; gap: 14px; font-size: 12px; color: var(--text-3); }
.tc-card .st b, .tc-row .st b { color: var(--text); font-weight: 700; font-variant-numeric: tabular-nums; }
.tc-card .cats { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.tc-card .ct { font-size: 10.5px; padding: 1px 7px; border-radius: 9px; background: var(--panel-2); color: var(--text-3); }
.tc-card .ct.more { color: var(--text-2); }
.tc-card .hot {
  margin-top: 9px; font-size: 11.5px; color: var(--text-3);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tc-card .hot .lb {
  color: var(--amber); background: rgba(245, 158, 11, .13);
  padding: 1px 6px; border-radius: 3px; margin-right: 6px; font-size: 10.5px;
}
.tc-card .go { margin-top: 9px; font-size: 12px; color: var(--cyan); opacity: .85; }
.tc-card:hover .go { opacity: 1; }

/* ---------- 讲师行（列表视图） ---------- */
.tc-rows { display: flex; flex-direction: column; gap: 10px; }
.tc-row {
  display: flex; align-items: center; gap: 14px; padding: 13px 15px; cursor: pointer;
  border: 1px solid var(--border); border-radius: var(--r); background: var(--bg-2);
  transition: border-color .16s, background .16s;
}
.tc-row:hover { border-color: rgba(0, 212, 255, .42); background: var(--bg-3); }
.tc-row .nm .sb { font-size: 11.5px; color: var(--text-3); font-weight: 400; margin-left: 6px; }
.tc-row .bio {
  margin-top: 6px; font-size: 12.5px; line-height: 1.65; color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tc-row .bd { flex: 1; }
.tc-row .st { margin-top: 7px; display: flex; gap: 14px; font-size: 11.5px; color: var(--text-3); }
.tc-row .st .cats { color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tc-row .go { flex-shrink: 0; color: var(--text-3); font-size: 16px; }
.tc-row:hover .go { color: var(--cyan); }
.tc-row:hover .nm { color: var(--cyan); }

/* ---------- 左侧「课程数排行」的序号 ---------- */
#tc-top .pts-cat .rk {
  width: 18px; flex-shrink: 0; text-align: center;
  font-size: 11px; font-weight: 700; color: var(--text-3); font-variant-numeric: tabular-nums;
}
#tc-top .pts-cat:nth-child(-n+3) .rk { color: var(--cyan); }