/* 파일 책임: FAQ/계산근거 아코디언 컴포넌트 스타일 */

/* ─────────────────────────────────────────────
   아코디언 래퍼
───────────────────────────────────────────── */
.accordion {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
}

/* ─────────────────────────────────────────────
   아코디언 아이템
───────────────────────────────────────────── */
.accordion__item {
  border-bottom: 1px solid var(--color-border-subtle);
}

.accordion__item:last-child {
  border-bottom: none;
}

/* ─────────────────────────────────────────────
   트리거 버튼
───────────────────────────────────────────── */
.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 16px 20px;
  background-color: var(--color-bg-surface);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  line-height: 1.5;
  transition: background-color 0.15s ease;
  gap: 12px;
}

.accordion__trigger:hover {
  background-color: var(--color-bg-subtle);
}

/* 열린 상태 트리거 */
.accordion__item.is-open .accordion__trigger {
  background-color: var(--color-bg-subtle);
  color: var(--color-accent-primary);
}

/* 포커스 접근성 */
.accordion__trigger:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: -2px;
}

/* 트리거 내 질문 텍스트 (flex-grow) */
.accordion__title {
  flex: 1;
}

/* ─────────────────────────────────────────────
   화살표 아이콘
───────────────────────────────────────────── */
.accordion__chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-secondary);
  transition: transform 0.3s ease, color 0.15s ease;
  /* SVG 아이콘을 background-image로 표시 */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20px 20px;
}

/* 열린 상태: 180도 회전 */
.accordion__item.is-open .accordion__chevron {
  transform: rotate(180deg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%230F7B6C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

/* ─────────────────────────────────────────────
   콘텐츠 영역 (높이 애니메이션)
───────────────────────────────────────────── */
.accordion__content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}

/* 열린 상태: 최대 높이 확장 */
.accordion__item.is-open .accordion__content {
  max-height: 800px;
}

/* ─────────────────────────────────────────────
   본문 내용
───────────────────────────────────────────── */
.accordion__body {
  padding: 0 20px 20px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 본문 내 단락 간격 */
.accordion__body p {
  margin: 0 0 10px;
}

.accordion__body p:last-child {
  margin-bottom: 0;
}

/* 본문 내 목록 */
.accordion__body ul,
.accordion__body ol {
  margin: 8px 0;
  padding-left: 20px;
}

.accordion__body li {
  margin-bottom: 4px;
}

/* ─────────────────────────────────────────────
   계산근거 박스 (.calc-basis)
───────────────────────────────────────────── */
.accordion__body .calc-basis {
  background-color: var(--color-bg-subtle);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 12px;
}

/* 계산근거 각 항목: 항목명과 값을 양 끝 정렬 */
.accordion__body .calc-basis__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--text-xs);
}

.accordion__body .calc-basis__item:last-child {
  border-bottom: none;
}

.accordion__body .calc-basis__name {
  color: var(--color-text-secondary);
  flex: 1;
  padding-right: 12px;
}

.accordion__body .calc-basis__value {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* 계산근거 합계 행 */
.accordion__body .calc-basis__item.is-total {
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1.5px solid var(--color-border-default);
  border-bottom: none;
}

.accordion__body .calc-basis__item.is-total .calc-basis__name {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.accordion__body .calc-basis__item.is-total .calc-basis__value {
  color: var(--color-accent-primary);
  font-size: var(--text-sm);
}

/* ─────────────────────────────────────────────
   강조 텍스트 (인라인)
───────────────────────────────────────────── */
.accordion__body strong {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.accordion__body .highlight {
  color: var(--color-accent-primary);
  font-weight: var(--font-semibold);
}

/* ─────────────────────────────────────────────
   아코디언 그룹 간격 (여러 아코디언 사이)
───────────────────────────────────────────── */
.accordion + .accordion {
  margin-top: 12px;
}

/* ─────────────────────────────────────────────
   반응형
───────────────────────────────────────────── */
@media (max-width: 480px) {
  .accordion__trigger {
    padding: 14px 16px;
    font-size: var(--text-xs);
  }

  .accordion__body {
    padding: 0 16px 16px;
  }
}