.product-detail__additional {
  border-block-start: 1px solid rgba(var(--color-text), 0.08);
  border-block-end: 1px solid rgba(var(--color-text), 0.08);
}

.product-detail__additional + .product-detail__additional {
  margin-block-start: calc(-1 * var(--info-row-gap));
  border-block-start: none;
}

.product-detail__additional .additional__trigger {
  display: flex;
  gap: 15px;
  align-items: center;
  padding: 15px 0;
  padding-inline-end: 15px;
}

.product-detail__additional .additional__title {
  flex: 1 0 0;
}

.product-detail__additional .additional__content {
  padding: 0 5px;
  overflow: hidden;
}

.product-detail__additional .additional__content::after {
  display: block;
  height: 15px;
  content: "";
}

.product-detail__additional .additional__arrow {
  transition: transform 200ms;
}
.product-detail [open] .additional__arrow {
  transform: rotate(180deg);
}

/* Partial Fold Styles */
.product-detail__additional .additional__header {
  display: flex;
  gap: 15px;
  align-items: center;
  padding: 15px 0;
  padding-inline-end: 15px;
  cursor: pointer;
  user-select: none;
}

.product-detail__additional .additional__header .additional__arrow {
  margin-left: auto;
  transition: transform 0.3s ease;
}

.additional__partial-fold-container:not(.collapsed)
  .additional__header
  .additional__arrow {
  transform: rotate(180deg);
}

.additional__partial-fold-container {
  display: block;
  position: relative;
  padding-bottom: 40px;
}

.additional__content-wrapper {
  max-height: 150px;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.additional__partial-fold-container.fully-expanded {
  padding-bottom: 0;
}
.additional__partial-fold-container.fully-expanded
  .additional__content-wrapper {
  max-height: none;
  overflow: visible;
}

.additional__partial-overlay {
  position: absolute;
  bottom: 0px;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.4) 40%,
    rgba(255, 255, 255, 0.8) 75%,
    #fff 100%
  );
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 10;
}

.additional__partial-fold-container:not(.collapsed)
  .additional__partial-overlay {
  opacity: 0;
}

.additional__partial-toggle-btn {
  position: absolute;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  padding: 8px 0;
  background: transparent;
  border: none;
  color: #333;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  z-index: 20;
  transition: color 0.2s;
}

.additional__partial-toggle-btn:hover {
  color: #000;
}

.additional__partial-toggle-btn .toggle-icon {
  margin-left: 4px;
  transition: transform 0.3s ease;
}

.additional__partial-fold-container:not(.collapsed) .toggle-icon {
  transform: rotate(180deg);
}

.hidden {
  display: none !important;
}