/**
 * 로딩 전용 skeleton — 상세/비교/순위 fetch 구간에만 사용.
 * 기존 카드/버튼/테이블 스타일은 건드리지 않고, .page-skeleton* 범위에서만 정의.
 */

/* 스크린리더 전용 (프로젝트에 .sr-only 없을 때 대비) */
.page-skeleton-sr,
.page-skeleton .page-skeleton-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----- shimmer 유틸 ----- */
.skeleton,
.skeleton-line,
.skeleton-block,
.skeleton-chip,
.skeleton-table-row,
.skeleton-ranking-trow,
.skeleton-compare-trow,
.skeleton-compare-slot-card,
.page-skeleton-section-slab,
.page-skeleton-compare-table .skeleton-line,
.page-skeleton-trow .skeleton-line {
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  border-radius: 6px;
  background: color-mix(in srgb, var(--text-sub, #6b7280) 12%, var(--bg-card, #f3f4f6) 88%);
  border: 1px solid color-mix(in srgb, var(--border, #e5e7eb) 80%, transparent);
}

.skeleton-line::after,
.skeleton::after,
.skeleton-block::after,
.skeleton-chip::after,
.skeleton-compare-slot-card::after,
.skeleton-compare-trow::after,
.skeleton-ranking-trow::after,
.skeleton-compare-trow--head::after,
.page-skeleton-trow .skeleton-line::after,
.page-skeleton-compare-table .skeleton-line::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 45%,
    transparent 100%
  );
  animation: page-skeleton-shimmer 1.4s ease-in-out infinite;
}

body.dark-mode .skeleton-line::after,
body.dark-mode .skeleton::after,
body.dark-mode .skeleton-block::after,
body.dark-mode .skeleton-chip::after,
body.dark-mode .skeleton-compare-slot-card::after,
body.dark-mode .skeleton-compare-trow::after,
body.dark-mode .skeleton-ranking-trow::after,
body.dark-mode .skeleton-compare-trow--head::after,
body.dark-mode .page-skeleton-trow .skeleton-line::after,
body.dark-mode .page-skeleton-compare-table .skeleton-line::after {
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--text-main, #e5e7eb) 12%, transparent) 50%,
    transparent 100%
  );
}

@keyframes page-skeleton-shimmer {
  100% {
    transform: translateX(100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton-line::after,
  .skeleton::after,
  .skeleton-block::after,
  .skeleton-chip::after,
  .skeleton-compare-slot-card::after,
  .skeleton-compare-trow::after,
  .skeleton-ranking-trow::after,
  .skeleton-compare-trow--head::after,
  .page-skeleton-trow .skeleton-line::after,
  .page-skeleton-compare-table .skeleton-line::after {
    animation: none;
  }
}

/* ----- 레이아웃: 상세 ----- */
.page-skeleton--brand {
  min-height: 42vh;
}

.page-skeleton__inner {
  padding-top: 0;
}

.page-skeleton-brand-header {
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-light, #e5e7eb);
}

.skeleton-line--brand-h1 {
  height: 22px;
  width: min(72%, 420px);
  margin: 0 0 8px 0;
  display: block;
  border-radius: 7px;
}

.page-skeleton-meta-dots {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
  margin-bottom: 8px;
}

.skeleton-line--meta {
  height: 10px;
  min-width: 100px;
  max-width: 200px;
  display: inline-block;
}

.skeleton-line--meta.page-skeleton-meta--short {
  max-width: 120px;
  min-width: 64px;
}

.page-skeleton-header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin-bottom: 0;
}

.skeleton-chip--compare {
  width: 72px;
  height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
}

.skeleton-chip--version {
  min-width: min(220px, 100%);
  height: 30px;
  max-width: 70%;
  flex: 1 1 180px;
  border-radius: 6px;
}

.page-skeleton-kpi-block {
  margin-top: 6px;
}

.page-skeleton-kpi-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin: 0 0 6px 0;
}

.skeleton-line--section-h {
  width: 72px;
  height: 14px;
  display: inline-block;
}

.skeleton-line--unit {
  width: 160px;
  height: 10px;
  display: inline-block;
  opacity: 0.9;
}

.page-skeleton-core-table {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-skeleton-trow {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  gap: 8px;
  width: 100%;
}

.skeleton-line--tcell {
  height: 14px;
  min-height: 14px;
  flex: 0 0 auto;
}

.skeleton-line--tcell.tcell-w1 {
  width: 22%;
  max-width: 140px;
}
.skeleton-line--tcell.tcell-w2 {
  flex: 1 1 0;
  min-width: 0;
}

.page-skeleton-body-cols {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 10px;
}

.skeleton-block.page-skeleton-section-slab {
  height: 18px;
  width: 100%;
  max-width: 100%;
  border-radius: 8px;
  border: 0;
}

.page-skeleton-section-slab--short {
  max-width: 80%;
  height: 16px;
}

/* ----- 비교 ----- */
.page-skeleton-compare-root {
  min-height: 32vh;
}

.page-skeleton--compare {
  min-height: 30vh;
}

.skeleton-line--compare-h1 {
  height: 20px;
  width: min(60%, 320px);
  margin: 0 0 4px 0;
  display: block;
  border-radius: 7px;
}

.skeleton-line--compare-sub {
  height: 11px;
  width: min(88%, 480px);
  margin: 0 0 10px 0;
  display: block;
  border-radius: 6px;
  opacity: 0.95;
}

.page-skeleton-compare-slots {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 5px 7px;
  margin-bottom: 8px;
}

.skeleton-compare-slot-card {
  min-height: 50px;
  border-radius: 7px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 5px 4px 4px;
  align-items: flex-start;
}

.skeleton-line--slot-name {
  width: 88%;
  height: 11px;
  border-radius: 5px;
}
.skeleton-line--slot-year {
  width: 56%;
  height: 9px;
  border-radius: 5px;
  opacity: 0.9;
}

@media screen and (max-width: 768px) {
  .page-skeleton-compare-slots {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-skeleton-compare-kpi-dots {
  margin: 2px 0 4px 0;
}

.skeleton-kpi-dots-line {
  width: 45%;
  height: 4px;
  max-width: 200px;
  display: block;
  border-radius: 2px;
  border: 0;
}

.page-skeleton-compare-table {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.skeleton-compare-trow {
  display: block;
  height: 9px;
  width: 100%;
  max-width: 100%;
  border: 0;
  border-radius: 4px;
  opacity: 0.9;
}
.skeleton-compare-trow--head {
  height: 10px;
  max-width: 100%;
  margin-bottom: 2px;
  opacity: 1;
}

.skeleton-compare-trow:not(.skeleton-compare-trow--head) {
  max-width: min(100%, 520px);
}

.skeleton-compare-trow:nth-child(odd) {
  opacity: 0.8;
}

.page-skeleton-compare-toolbar {
  margin-top: 6px;
}
.skeleton-line--toolbar {
  display: block;
  height: 4px;
  max-width: 200px;
  width: 36%;
  border: 0;
  border-radius: 2px;
  opacity: 0.6;
}

/* ----- 순위 결과 루트 전용 ----- */
.page-skeleton--ranking-results {
  min-height: 20vh;
}

.page-skeleton-ranking-meta {
  margin-bottom: 4px;
}

.skeleton-ranking-meta-line {
  display: block;
  height: 8px;
  max-width: min(100%, 400px);
}
.skeleton-ranking-meta-line.long {
  max-width: min(100%, 100%);
}

.page-skeleton-ranking-tablewrap {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 2px;
}

.skeleton-ranking-trow {
  display: block;
  width: 100%;
  min-height: 7px;
  height: 8px;
  border: 0;
  border-radius: 3px;
  opacity: 0.9;
}
.skeleton-ranking-trow.head {
  height: 10px;
  max-width: 100%;
  margin-bottom: 2px;
  opacity: 1;
}
.skeleton-ranking-trow:not(.head) {
  max-width: 100%;
}

.skeleton-ranking-trow:nth-child(8) {
  opacity: 0.7;
}
.skeleton-ranking-trow:nth-child(9) {
  opacity: 0.6;
}