/* art.html — 資料館の展示構造（2026-07-11） */

[hidden] {
  display: none !important;
}

.wrap > hr.div {
  display: none;
}

.wrap > section {
  margin-bottom: 0 !important;
  padding: 48px 0;
  border-top: var(--line);
  scroll-margin-top: 76px;
}

.wrap > section:first-of-type {
  border-top: 0;
}

.museumMap {
  padding-top: 12px !important;
}

.museumMapIntro {
  max-width: 68ch;
}

.museumMapGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 24px;
}

.museumMapCard {
  min-height: 132px;
  padding: 18px;
  border: var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--washi-deep) 72%, transparent);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}

.museumMapCard:hover {
  border-color: var(--kin);
  background: color-mix(in srgb, var(--kin) 8%, var(--washi-deep));
  transform: translateY(-2px);
}

.museumMapCard:focus-visible,
.colorCardTrigger:focus-visible,
.hspHeader:focus-visible,
.slot:focus-visible {
  outline: 2px solid var(--kin);
  outline-offset: 3px;
}

.museumMapIndex {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--kin);
}

.museumMapTitle {
  display: block;
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: .08em;
  margin-bottom: 4px;
}

.museumMapText {
  display: block;
  color: var(--sumi-2);
  font-size: 12px;
  line-height: 1.8;
}

.museumMapArrow {
  align-self: flex-end;
  color: var(--kin);
  font-size: 16px;
}

/* 常設展示：16色の基準画 */
.colorGrid {
  gap: 40px;
}

.colorGroupHeader {
  justify-content: flex-start;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--sumi-1);
}

.colorGroupHeader::before {
  display: none;
}

.colorGroupHeader::after {
  border-color: var(--sumi-4);
}

.colorPairGrid {
  grid-template-columns: 1fr;
  gap: 12px;
}

.colorCard.is-enhanced {
  border-radius: 10px;
  cursor: default;
  background: color-mix(in srgb, var(--washi-deep) 72%, transparent);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.colorCard.is-enhanced::before {
  display: none;
}

.colorCard.is-enhanced:hover {
  transform: none;
  border-color: color-mix(in srgb, var(--kin) 58%, transparent);
  box-shadow: var(--shadow);
}

.colorCardTrigger {
  width: 100%;
  min-height: 220px;
  border: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(136px, 42%) 1fr;
  align-items: stretch;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.colorArtwork {
  position: relative;
  min-width: 0;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--washi);
  border-right: var(--line);
}

.colorArtwork img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  object-position: center 46%;
}

.colorArtwork .colorSwatch {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 12px;
  padding: 0;
  border: 0 !important;
}

.colorArtwork .colorSwatchNum {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 2;
  padding: 4px 9px;
  color: var(--washi);
  background: color-mix(in srgb, var(--washi-ink) 76%, transparent) !important;
  border: 1px solid color-mix(in srgb, var(--washi) 28%, transparent);
}

.colorCard.is-enhanced .colorInfo {
  padding: 24px 20px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.colorCard.is-enhanced .colorJP {
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 23px);
  letter-spacing: .08em;
  margin-bottom: 4px;
}

.colorCard.is-enhanced .colorKana {
  font-size: 12px;
  letter-spacing: .08em;
}

.colorCard.is-enhanced .colorMeta {
  justify-content: flex-start;
  gap: 10px;
}

.colorCard.is-enhanced .colorGroup {
  display: none;
}

.colorAction {
  margin-top: 18px;
  padding-top: 14px;
  border-top: var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--sumi-1);
}

.colorActionIcon {
  flex: 0 0 auto;
  color: var(--kin);
  transition: transform .18s ease;
}

.colorCard.open .colorActionIcon {
  transform: rotate(180deg);
}

.colorCard.is-enhanced .colorSlots {
  position: relative;
  z-index: 1;
  padding: 18px 20px 22px;
  background: color-mix(in srgb, var(--washi) 80%, transparent);
}

.colorCard.is-enhanced.open {
  grid-column: 1 / -1;
}

.slotsLabel {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.8;
}

.hspHeader {
  width: 100%;
  min-height: 44px;
  border: 0;
  color: var(--sumi-1);
  font-family: var(--serif);
  text-align: left;
}

.hspGrid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.slot {
  padding: 0;
  color: inherit;
  font: inherit;
}

.hspHeaderMain {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.hspCount {
  color: var(--sumi-2);
  font-size: 10px;
  letter-spacing: .08em;
}

/* 576体の組み合わせ */
.formulaGrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.formulaCard {
  min-height: 124px;
  padding: 18px;
  border: var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--washi-deep) 72%, transparent);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.formulaNumber {
  font-family: var(--serif);
  font-size: 30px;
  color: var(--kin);
  line-height: 1;
}

.formulaName {
  display: block;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: .08em;
}

.formulaText {
  display: block;
  color: var(--sumi-2);
  font-size: 11px;
  line-height: 1.7;
}

.formulaResult {
  grid-column: 1 / -1;
  min-height: 112px;
  align-items: center;
  text-align: center;
  background: color-mix(in srgb, var(--kin) 9%, var(--washi-deep));
}

.formulaResult .formulaNumber {
  font-size: clamp(22px, 5vw, 30px);
}

/* 入れ替え可能な企画展示 */
.collectionGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.collectionCard {
  overflow: hidden;
  border: var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--washi-deep) 76%, transparent);
  box-shadow: var(--shadow);
}

.collectionVisual {
  position: relative;
  min-height: 190px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-bottom: var(--line);
  background:
    radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--kin) 18%, transparent), transparent 48%),
    color-mix(in srgb, var(--washi) 72%, var(--washi-deep));
}

.collectionVisual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/asanoha.svg');
  background-repeat: repeat;
  background-size: 34.64px 60px;
  opacity: .04;
  pointer-events: none;
}

.collectionVisual.has-image .collectionPlaceholder {
  display: none;
}

.collectionVisual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collectionPlaceholder {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
}

.collectionFrame {
  width: 56px;
  aspect-ratio: 4 / 5;
  border: 1px solid color-mix(in srgb, var(--kin) 58%, transparent);
  background: color-mix(in srgb, var(--washi) 70%, transparent);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--washi-ink) 10%, transparent);
}

.collectionFrame:nth-child(2) {
  transform: translateY(-10px);
}

.artIconMask {
  display: inline-block;
  width: 30px;
  height: 30px;
  background: currentColor;
  -webkit-mask: var(--art-icon) center / contain no-repeat;
  mask: var(--art-icon) center / contain no-repeat;
}

.collectionMark {
  position: absolute;
  left: 18px;
  top: 18px;
  z-index: 2;
  color: var(--kin);
}

.collectionBody {
  padding: 20px;
}

.collectionEyebrow,
.collectionStatus {
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--kin);
}

.collectionTitle {
  margin: 8px 0 7px;
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: .07em;
}

.collectionText {
  color: var(--sumi-2);
  font-size: 12px;
  line-height: 1.9;
}

.collectionStatus {
  display: inline-flex;
  margin-top: 16px;
  padding-top: 12px;
  border-top: var(--line);
  width: 100%;
}

/* 四季と自然色：OS絵文字を使わず、同じ線画体系で見せる */
.seasonHeader {
  height: 76px;
  color: var(--kin);
  background: color-mix(in srgb, var(--washi) 72%, var(--washi-deep)) !important;
}

.seasonHeader .artIconMask {
  width: 32px;
  height: 32px;
}

.seasonColorBands {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  height: 8px;
}

.seasonColorBand {
  background: var(--art-color);
}

.shizenIcon {
  color: var(--kin);
}

.shizenIcon .artIconMask {
  width: 28px;
  height: 28px;
}

/* 収蔵資料 */
.archiveGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.archiveCard {
  min-height: 148px;
  padding: 20px;
  border: var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--washi-deep) 72%, transparent);
}

.archiveIndex {
  display: block;
  color: var(--kin);
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: .18em;
  margin-bottom: 18px;
}

.archiveTitle {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .08em;
  margin-bottom: 6px;
}

.archiveText {
  color: var(--sumi-2);
  font-size: 12px;
  line-height: 1.8;
}

@media (min-width: 640px) {
  .museumMapGrid,
  .formulaGrid,
  .collectionGrid,
  .archiveGrid {
    grid-template-columns: repeat(2, 1fr);
  }

  .formulaResult {
    grid-column: 1 / -1;
  }
}

@media (min-width: 768px) {
  .museumMapGrid {
    grid-template-columns: repeat(4, 1fr);
  }

  .colorPairGrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .archiveGrid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hspGrid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .wrap > section {
    padding: 40px 0;
  }

  .colorCardTrigger {
    grid-template-columns: 1fr;
  }

  .colorArtwork {
    border-right: 0;
    border-bottom: var(--line);
  }

  .colorArtwork img {
    min-height: 0;
    max-height: none;
  }

  .colorCard.is-enhanced .colorInfo {
    padding: 20px 18px 18px;
  }
}

@media (hover: none) {
  .museumMapCard:hover,
  .colorCard.is-enhanced:hover,
  .slot:hover {
    transform: none;
  }

  .slot:hover {
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .museumMapCard,
  .colorCard.is-enhanced,
  .colorActionIcon {
    transition: none;
  }
}