/* -------------------------------- 

File#: _1_accordion
Title: Accordion
Descr: Create stacked sections of content and allow the user to expand/collapse them
Usage: codyhouse.co/license

-------------------------------- */
:root {
  /* general */
  --accordion-border-width: 1px;
  /* icon */
  --accordion-icon-size: 20px;
  --accordion-icon-stroke-width: 2px;
}

.accordion__item {
  border-style: solid;
  border-color: var(--color-contrast-lower);
  border-bottom-width: var(--accordion-border-width);
}
.accordion__item:first-child {
  border-top-width: var(--accordion-border-width);
}

.accordion__header { /* button */
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  cursor: pointer;
}
.accordion__header .icon {
  --size: var(--accordion-icon-size);
}
.accordion__header .icon .icon__group {
  stroke-width: var(--accordion-icon-stroke-width);
}

.accordion__icon-arrow .icon__group,
.accordion__icon-arrow-v2 .icon__group,
.accordion__icon-plus .icon__group {
  will-change: transform;
  transform-origin: 50% 50%;
}

.accordion__icon-arrow .icon__group > * {
  transform-origin: 10px 14px;
}

.accordion__icon-arrow-v2 .icon__group > * {
  transform-origin: 50% 50%;
  stroke-dasharray: 20;
  transform: translateY(4px);
}
.accordion__icon-arrow-v2 .icon__group > *:first-child {
  stroke-dashoffset: 10.15;
}
.accordion__icon-arrow-v2 .icon__group > *:last-child {
  stroke-dashoffset: 10.15;
}

.accordion__icon-plus .icon__group {
  transform: rotate(-90deg);
}
.accordion__icon-plus .icon__group > * {
  transform-origin: 50% 50%;
}
.accordion__icon-plus .icon__group > *:first-child {
  transform: rotate(-90deg);
}

.accordion__item--is-open > .accordion__header > .accordion__icon-arrow .icon__group { /* animated arrow icon */ }
.accordion__item--is-open > .accordion__header > .accordion__icon-arrow .icon__group > *:first-child {
  transform: translateY(-8px) rotate(-90deg);
}
.accordion__item--is-open > .accordion__header > .accordion__icon-arrow .icon__group > *:last-child {
  transform: translateY(-8px) rotate(90deg);
}
.accordion__item--is-open > .accordion__header > .accordion__icon-arrow-v2 .icon__group { /* animated arrow icon v2 */
  transform: rotate(-90deg);
}
.accordion__item--is-open > .accordion__header > .accordion__icon-arrow-v2 .icon__group > *:first-child, .accordion__item--is-open > .accordion__header > .accordion__icon-arrow-v2 .icon__group *:last-child {
  stroke-dashoffset: 0;
  transform: translateY(0px);
}
.accordion__item--is-open > .accordion__header > .accordion__icon-plus .icon__group { /* animated plus icon */
  transform: rotate(0);
}
.accordion__item--is-open > .accordion__header > .accordion__icon-plus .icon__group > *:first-child {
  transform: rotate(0);
}

.accordion__panel {
  display: none;
  will-change: height;
  transform: translateZ(0px);
}

.accordion__item--is-open > .accordion__panel {
  display: block;
}

/* animations */
.accordion[data-animation=on] .accordion__item--is-open .accordion__panel > * {
  animation: accordion-entry-animation 0.4s var(--ease-out);
}
.accordion[data-animation=on] .accordion__icon-arrow .icon__group,
.accordion[data-animation=on] .accordion__icon-arrow-v2 .icon__group,
.accordion[data-animation=on] .accordion__icon-plus .icon__group {
  transition: transform 0.3s var(--ease-out);
}
.accordion[data-animation=on] .accordion__icon-arrow .icon__group > *,
.accordion[data-animation=on] .accordion__icon-arrow-v2 .icon__group > *,
.accordion[data-animation=on] .accordion__icon-plus .icon__group > * {
  transition: transform 0.3s, stroke-dashoffset 0.3s;
  transition-timing-function: var(--ease-out);
}

@keyframes accordion-entry-animation {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0px);
  }
}