.catalog {
  margin-top: 30px;
}
.catalog-tools {
  display: flex;
  gap: 10px;
  max-width: 650px;
}
.catalog-tools input,
.catalog-tools select {
  min-height: 42px;
  padding: 8px 12px;
}
.catalog-tools input {
  flex: 1;
  min-width: 0;
}
.catalog-tools select {
  width: 180px;
}
.catalog-tools button {
  min-height: 42px;
  padding: 8px 14px;
  white-space: nowrap;
}
.catalog-tools button:disabled {
  cursor: wait;
  opacity: 0.65;
}
.catalog-count {
  min-height: 1.55em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.toc {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}
.toc-language {
  padding: 20px 0 8px;
  font-size: 21px;
  font-weight: 700;
}
.toc-language-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.cache-environment {
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.cache-environment:disabled {
  cursor: wait;
  opacity: 0.65;
}
.toc-level {
  margin-left: 18px;
  border-left: 1px solid var(--line);
  padding-left: 20px;
}
.toc-course {
  padding: 16px 0 10px;
  color: var(--accent);
  font-weight: 700;
}
.toc-course-name{
  color: var(--accent-rev);
  font-size: 18px;
}
.toc-group {
  padding: 4px 0 18px;
}
.toc-group-title {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 5px;
}
.toc-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  max-width: 650px;
}
.toc-link:hover {
  color: var(--accent);
}
.toc-link small {
  color: var(--muted);
  font-size: 12px;
}
.toc-arrow {
  font-size: 18px;
  color: var(--accent);
}
@media (max-width: 560px) {
  .catalog-tools {
    flex-direction: column;
  }
  .catalog-tools select {
    width: 100%;
  }
}