.collapsibleCode {
  margin: 1.5rem 0;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.header {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #e2e8f0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
  user-select: none;
}

.header:hover {
  background: linear-gradient(135deg, #f1f5f9 0%, #cbd5e1 100%);
}

.title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: #374151;
  font-size: 1rem;
}

.icon {
  font-size: 0.8rem;
  transition: transform 0.2s ease;
  color: #6b7280;
}

.actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: #6b7280;
}

.lineCount {
  background: #e2e8f0;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #475569;
}

.expandText {
  font-weight: 500;
}

.codeContainer {
  overflow: hidden;
}

.expanded .fullCode {
  opacity: 1;
  max-height: none;
}

.preview {
  position: relative;
  max-height: 120px;
  overflow: hidden;
}

.preview pre {
  margin: 0;
  background: #f8fafc;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}

.preview code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

.fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(transparent, #f8fafc);
  display: flex;
  align-items: end;
  justify-content: center;
  padding-bottom: 0.5rem;
  cursor: pointer;
  pointer-events: all;
}

.expandHint {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid rgba(59, 130, 246, 0.2);
  cursor: pointer;
  transition: all 0.2s ease;
  pointer-events: none;
}

.fade:hover .expandHint {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-1px);
}

.fullCode {
  background: #f8fafc;
}

.codeHeader {
  background: #e2e8f0;
  padding: 0.5rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #cbd5e1;
}

.language {
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  letter-spacing: 0.05em;
}

.copyButton {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 0.375rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.copyButton:hover {
  background: #2563eb;
  transform: translateY(-1px);
}

.fullCode pre {
  margin: 0;
  background: #f8fafc;
  padding: 1.5rem;
  border: none;
  border-radius: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-x: auto;
}

.fullCode code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

html[data-theme='dark'] .collapsibleCode {
  border-color: var(--ifm-color-emphasis-300);
  background: var(--ifm-background-surface-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

html[data-theme='dark'] .header {
  background: linear-gradient(
    135deg,
    var(--ifm-background-color) 0%,
    var(--ifm-background-surface-color) 100%
  );
  border-bottom-color: var(--ifm-color-emphasis-300);
}

html[data-theme='dark'] .header:hover {
  background: linear-gradient(
    135deg,
    var(--ifm-background-surface-color) 0%,
    var(--ifm-color-emphasis-200) 100%
  );
}

html[data-theme='dark'] .title {
  color: var(--ifm-font-color-base);
}

html[data-theme='dark'] .icon,
html[data-theme='dark'] .actions {
  color: var(--ifm-color-emphasis-700);
}

html[data-theme='dark'] .lineCount {
  background: var(--ifm-color-emphasis-200);
  color: var(--ifm-font-color-base);
}

html[data-theme='dark'] .preview pre,
html[data-theme='dark'] .fullCode,
html[data-theme='dark'] .fullCode pre {
  background: var(--ifm-background-color);
}

html[data-theme='dark'] .fade {
  background: linear-gradient(transparent, var(--ifm-background-color));
}

html[data-theme='dark'] .expandHint {
  background: rgba(59, 130, 246, 0.18);
  border-color: rgba(59, 130, 246, 0.35);
}

html[data-theme='dark'] .fade:hover .expandHint {
  background: rgba(59, 130, 246, 0.3);
  border-color: rgba(59, 130, 246, 0.55);
}

html[data-theme='dark'] .codeHeader {
  background: var(--ifm-color-emphasis-200);
  border-bottom-color: var(--ifm-color-emphasis-300);
}

html[data-theme='dark'] .language {
  color: var(--ifm-color-emphasis-800);
}

/* Mobile responsive */
@media (max-width: 640px) {
  .header {
    padding: 0.875rem 1rem;
  }

  .title {
    font-size: 0.9rem;
  }

  .actions {
    gap: 0.5rem;
  }

  .expandText {
    display: none;
  }

  .preview pre,
  .fullCode pre {
    padding: 1rem;
    font-size: 0.8rem;
  }

  .codeHeader {
    padding: 0.5rem 1rem;
  }

  .copyButton {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
  }
}