/* ===== 知识点搜索框 ===== */
.search-bar-wrap {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 16px;
  position: relative;
}
.search-input {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 14px;
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.25s ease;
  outline: none;
}
.search-input:focus {
  border-color: var(--s-primary, var(--primary));
  box-shadow: 0 0 0 3px var(--s-light, var(--primary-light));
}
.search-input::placeholder {
  color: var(--text-muted);
}
.search-btn {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.search-btn:hover {
  border-color: var(--s-primary, var(--primary));
  background: var(--s-light, var(--primary-light));
}
.search-clear {
  position: absolute;
  right: 54px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--text-muted);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 12px;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.search-clear.visible { display: flex; }
.search-clear:hover { background: var(--text-secondary); }

/* 无搜索结果提示 */
.no-result-msg {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 15px;
}