/* ═══════════════════════════════════════════════════════════════════════════
   ACCORDION COMPONENT - Pastel Punk Style
   ═══════════════════════════════════════════════════════════════════════════

   Collapsible sections with chunky borders and hard shadows.
   Consistent with global theme system.
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  --accordion-spring-ease: cubic-bezier(0.34, 1.56, 0.64, 1);
  --accordion-collapse-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --accordion-duration: 420ms;
}

.accordion {
  border: var(--border-width) solid var(--color-ink);
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow-sm);
  overflow: visible;
  transition:
    box-shadow 180ms ease,
    transform 180ms cubic-bezier(0.34, 1.56, 0.64, 1),
    border-color 180ms ease;
}

.accordion + .accordion {
  margin-top: 8px;
}

.accordion:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-md);
}

.accordion--theme {
  background: linear-gradient(135deg, rgba(255, 159, 243, 0.08) 0%, rgba(255, 159, 243, 0.04) 100%), white;
}

.accordion--images {
  background: white;
}

.accordion--actions {
  background: white;
}

.accordion--advanced {
  border-style: dashed;
  border-color: var(--color-muted);
  background: rgba(255, 255, 255, 0.5);
}

/* ───────────────────────────────────────────────────────────────────────── */
/* ACCORDION HEADER (TOGGLE)
/* ───────────────────────────────────────────────────────────────────────── */

.accordion__header {
  appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background-color 150ms ease;
  position: relative;
}

.accordion__header:hover {
  background: rgba(255, 159, 243, 0.08);
}

.accordion__header:active {
  background: rgba(255, 159, 243, 0.14);
}

.accordion__title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0;
  color: var(--color-ink);
}

.accordion__chevron {
  font-size: 0.7em;
  color: var(--color-surface);
  transition:
    transform 420ms cubic-bezier(0.34, 1.56, 0.64, 1),
    color 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: center;
}

.accordion__header:hover .accordion__chevron {
  color: var(--color-ink);
  transform: scale(1.15);
}

.accordion.is-open {
  z-index: 10;
  position: relative;
}

.accordion.is-open .accordion__chevron {
  transform: rotate(180deg) scale(1.05);
}

/* ───────────────────────────────────────────────────────────────────────── */
/* ACCORDION BODY (COLLAPSIBLE CONTENT)
/* ───────────────────────────────────────────────────────────────────────── */

.accordion__body {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden;
  opacity: 0;
  transition:
    grid-template-rows var(--accordion-duration) var(--accordion-collapse-ease),
    opacity 200ms var(--accordion-collapse-ease),
    overflow 0s;
}

.accordion.is-open .accordion__body {
  grid-template-rows: 1fr;
  opacity: 1;
  overflow: visible;
  transition:
    grid-template-rows calc(var(--accordion-duration) * 1.1) var(--accordion-spring-ease),
    opacity 280ms var(--accordion-spring-ease) 60ms,
    overflow 0s 500ms;
}

.accordion:not(.is-ready) .accordion__body,
.accordion:not(.is-ready) .accordion.is-open .accordion__body,
.accordion:not(.is-ready) .accordion__content,
.accordion:not(.is-ready) .accordion.is-open .accordion__content {
  transition: none !important;
}

.accordion__content {
  padding: 0 20px 0; /* Start with 0 bottom padding */
  opacity: 0;
  transform: translateY(-12px) scale(0.98);
  min-height: 0;
  overflow: hidden;
  visibility: hidden; /* Hide content when closed to prevent clicks */
  transition:
    padding-bottom 200ms var(--accordion-collapse-ease),
    opacity 200ms var(--accordion-collapse-ease),
    transform 260ms var(--accordion-collapse-ease),
    visibility 200ms step-end,
    overflow 0s;
}

.accordion.is-open .accordion__content {
  padding-bottom: 20px; /* Restore padding when open */
  opacity: 1;
  visibility: visible;
  overflow: visible;
  transform: translateY(0) scale(1);
  transition:
    padding-bottom 320ms var(--accordion-spring-ease),
    opacity 320ms var(--accordion-spring-ease) 80ms,
    transform 420ms var(--accordion-spring-ease) 80ms,
    visibility 0ms step-start,
    overflow 0s 500ms;
}

@media (prefers-reduced-motion: reduce) {
  .accordion__body,
  .accordion.is-open .accordion__body,
  .accordion__content,
  .accordion.is-open .accordion__content {
    transition: none;
  }
}

/* Micro-bounce on header click - DRAMATIC VERSION */
.accordion__header:active {
  animation: headerBounce 280ms cubic-bezier(0.68, -0.8, 0.265, 1.8);
}

@keyframes headerBounce {
  0% { transform: scale(1); }
  40% { transform: scale(0.94); }
  70% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* ───────────────────────────────────────────────────────────────────────── */
/* NESTED CONTENT (FORM ELEMENTS INSIDE ACCORDION)
/* ───────────────────────────────────────────────────────────────────────── */

.accordion__stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion__group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.accordion__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 8px;
  background: var(--badge-bg);
  color: var(--badge-color);
  border-radius: 4px;
  margin-left: 8px;
}

/* Stagger animation for children when opening */
.accordion.is-open .accordion__stack > * {
  animation: accordionChildFadeIn 400ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.accordion.is-open .accordion__stack > *:nth-child(1) {
  animation-delay: 80ms;
}

.accordion.is-open .accordion__stack > *:nth-child(2) {
  animation-delay: 120ms;
}

.accordion.is-open .accordion__stack > *:nth-child(3) {
  animation-delay: 160ms;
}

.accordion.is-open .accordion__stack > *:nth-child(4) {
  animation-delay: 200ms;
}

.accordion.is-open .accordion__stack > *:nth-child(5) {
  animation-delay: 240ms;
}

@keyframes accordionChildFadeIn {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}