/* ===== 全库词云 ===== */
.edu-wordcloud {
  max-width: 920px;
  margin: 18px auto 0;
  padding: 18px 18px 16px;
  border: 1px solid;
  border-radius: 1.3rem;
}
html[data-theme="light"] .edu-wordcloud {
  border-color: rgba(124,58,237,.16);
  background: linear-gradient(160deg, rgba(255,255,255,.75), rgba(250,245,255,.6));
  box-shadow: 0 4px 18px rgba(0,0,0,.03);
}
html[data-theme="dark"] .edu-wordcloud {
  border-color: rgba(168,85,247,.18);
  background: linear-gradient(160deg, rgba(34,31,29,.72), rgba(40,30,48,.5));
}
.wc-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.wc-title { font-size: 1.05rem; font-weight: 800; margin: 0; }
html[data-theme="light"] .wc-title { color: #4c1d95; }
html[data-theme="dark"] .wc-title { color: #ddd6fe; }
.wc-meta { font-size: .74rem; color: #94a3b8; }
/* 模式切换 tab */
.wc-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 12px; }
.wc-tab {
  font-family: inherit; font-size: .76rem; font-weight: 600; cursor: pointer;
  padding: 4px 12px; border-radius: 999px; border: 1px solid; background: transparent;
  transition: all .16s;
}
html[data-theme="light"] .wc-tab { border-color: #ddd6fe; color: #6d28d9; }
html[data-theme="light"] .wc-tab:hover { background: #f5f3ff; }
html[data-theme="light"] .wc-tab.is-active { background: #7c3aed; border-color: #7c3aed; color: #fff; }
html[data-theme="dark"] .wc-tab { border-color: #4c1d95; color: #c4b5fd; }
html[data-theme="dark"] .wc-tab:hover { background: rgba(124,58,237,.16); }
html[data-theme="dark"] .wc-tab.is-active { background: #7c3aed; border-color: #7c3aed; color: #fff; }
.wc-body {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 6px 14px; padding: 10px 6px 4px; min-height: 120px;
  line-height: 1.25;
}
.wc-word {
  text-decoration: none; cursor: pointer; padding: 1px 4px; border-radius: 6px;
  transition: transform .15s, background .15s, opacity .15s;
  opacity: .92;
}
.wc-word:hover {
  transform: scale(1.12) translateY(-2px);
  opacity: 1;
  background: rgba(230,126,34,.12);
}
.wc-loading, .wc-empty {
  width: 100%; text-align: center; font-size: .85rem; color: #94a3b8; padding: 30px 0;
}
.wc-foot {
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed #e2e8f0;
  font-size: .72rem; color: #94a3b8; text-align: center;
}
html[data-theme="dark"] .wc-foot { border-top-color: #334155; }

@media (max-width: 640px) {
  .edu-wordcloud { padding: 14px 12px 12px; }
  .wc-body { gap: 4px 10px; }
}