/* Content list */

.content-list {
  display: none;
  padding-left: 12px;
  padding-right: 12px;
  animation: contentEnter 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.content-list.is-active {
  display: block;
}


/* Title */

.content-title {
  margin-bottom: 24px;
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}


/* Accordion */

.content-accordion {
  margin: 0 auto;
}


/* Section */

.accordion-section {
  margin-bottom: 16px;
}


/* Row */

.accordion-row {
  display: flex;
  align-items: center;
  padding: 12px 0;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  user-select: none;
}

.accordion-subsection-title {
  margin: 0;
  font-weight: var(--font-weight-semibold);
}


/* Icons */

.accordion-section-header svg,
.accordion-subsection-title svg,
.accordion-exercise svg {
  flex-shrink: 0;
  margin-right: 10px;
}

.accordion-section-header svg {
  width: 18px;
  height: 18px;
}

.accordion-subsection-title svg {
  width: 16px;
  height: 16px;
}

.accordion-exercise svg {
  width: 14px;
  height: 14px;
}


/* Chevron */

.accordion-chevron {
  margin-left: auto;
  transition: transform 0.25s ease;
  color: var(--icon-color-default);
}

.accordion-section.is-open > .accordion-section-header .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-subsection.is-open > .accordion-subsection-title .accordion-chevron {
  transform: rotate(180deg);
}


/* Section content */

.accordion-section-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.25s ease;
  padding: 0;
}

.accordion-section.is-open .accordion-section-content {
  max-height: 600px;
  opacity: 1;
  transform: translateY(0);
  padding: 8px 0 0 12px;
}


/* Subsection */

.accordion-subsection {
  padding: 0;
}


/* Subsection content */

.accordion-subsection-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.25s ease;
  padding: 0;
}

.accordion-subsection.is-open .accordion-subsection-content {
  max-height: 600px;
  opacity: 1;
  transform: translateY(0);
  padding: 8px 0 0 0;
}


/* Direct exercises */

.accordion-direct {
  padding: 8px 0 0 0;
}


/* Exercise */

.accordion-exercise {
  display: flex;
  align-items: center;
  padding: 10px;
  font-size: 0.95rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.15s ease, transform 0.1s ease;
}

.accordion-exercise:active {
  background: var(--color-surface-pressed);
  transform: scale(0.98);
}


/* Animations */

@keyframes contentEnter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}