/* Kanji・Music・Landscape — shared museum room language
   Used by Journey, Collections, Publications, guidance rooms, and Bookshelf chrome. */

.museum-page {
  --gallery-wall: #171512;
  --gallery-elevated: #1c1915;
  --gallery-deep: #0e0c0a;
  --ivory: #efe9dc;
  --gold: #c9a458;
  --gold-soft: rgba(201, 164, 88, 0.14);
  --ink: #f3f1eb;
  --ink-soft: #d8d4cb;
  --ink-quiet: #9a958c;
  --ease-museum: 700ms cubic-bezier(0.22, 1, 0.36, 1);
  --ease: 220ms ease;
  --font-display: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-body: "Source Sans 3", "Hiragino Sans", "Noto Sans JP", sans-serif;
  color-scheme: dark;
}

.museum-page,
body.museum-page {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--gallery-wall);
  -webkit-font-smoothing: antialiased;
}

.museum-page img {
  max-width: 100%;
  height: auto;
  display: block;
}

.museum-page a {
  color: inherit;
}

.museum-page .skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.85rem;
  background: var(--gold);
  color: #171512;
  text-decoration: none;
  border-radius: 2px;
  transition: top var(--ease);
}

.museum-page .skip-link:focus {
  top: 1rem;
}

/* ---------- Header / nav ---------- */

.museum-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  background: linear-gradient(
    180deg,
    rgba(8, 8, 9, 0.72) 0%,
    transparent 100%
  );
}

.museum-header--solid {
  position: sticky;
  background: color-mix(in srgb, var(--gallery-wall) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(201, 164, 88, 0.12);
}

.museum-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2.5rem, 64rem);
  margin: 0 auto;
  min-height: 3.25rem;
  padding: 0.35rem 0;
}

.museum-brand {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--ease);
}

.museum-brand:hover,
.museum-brand:focus-visible {
  color: var(--gold);
}

.museum-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.museum-nav a {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--ease);
}

.museum-nav a:hover,
.museum-nav a:focus-visible {
  color: var(--gold);
}

.museum-nav a[aria-current="page"] {
  color: var(--gold);
}

/* ---------- Room hero ---------- */

.room-hero {
  position: relative;
  min-height: min(100svh, 54rem);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #0b0b0c;
}

.room-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.room-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  transform: scale(1.03);
  animation: room-drift 32s ease-in-out infinite alternate;
}

/* Lift photo only — veil unchanged, so hero text stays readable */
.room-hero--lift .room-hero-media img {
  filter: brightness(1.18) contrast(1.04);
}

.room-hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      105deg,
      rgba(8, 8, 9, 0.9) 0%,
      rgba(8, 8, 9, 0.62) 36%,
      rgba(8, 8, 9, 0.32) 60%,
      rgba(8, 8, 9, 0.58) 100%
    ),
    linear-gradient(
      180deg,
      rgba(8, 8, 9, 0.4) 0%,
      transparent 30%,
      rgba(8, 8, 9, 0.75) 76%,
      rgba(8, 8, 9, 0.97) 100%
    ),
    radial-gradient(
      ellipse 55% 50% at 22% 70%,
      rgba(31, 58, 46, 0.28),
      transparent 70%
    );
  pointer-events: none;
}

.room-hero-inner {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, 40rem);
  margin: 0 auto 0 clamp(1.25rem, 8vw, 7rem);
  padding: clamp(7rem, 16vw, 11rem) 0 clamp(4.5rem, 10vw, 6.5rem);
  text-align: left;
}

.room-hero-brand {
  margin: 0 0 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold);
  animation: room-rise 1.15s var(--ease-museum) 0.08s both;
}

.room-hero-inner h1 {
  max-width: 14ch;
  margin: 0 0 1.2rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.2vw, 3.35rem);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.18;
  color: var(--ink);
  text-shadow: 0 2px 28px rgba(0, 0, 0, 0.45);
  animation: room-rise 1.15s var(--ease-museum) 0.22s both;
}

.room-hero-lead {
  max-width: 28rem;
  margin: 0;
  font-size: clamp(1.02rem, 1.5vw, 1.14rem);
  line-height: 1.7;
  color: color-mix(in srgb, var(--ink-soft) 94%, white);
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.35);
  animation: room-rise 1.15s var(--ease-museum) 0.36s both;
}

.room-hero-scroll {
  position: absolute;
  left: clamp(1.25rem, 8vw, 7rem);
  bottom: 1.35rem;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  width: 2rem;
  height: 3rem;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity var(--ease);
}

.room-hero-scroll:hover {
  opacity: 1;
}

.room-hero-scroll-line {
  display: block;
  width: 1px;
  height: 2.4rem;
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in srgb, var(--gold) 80%, white)
  );
  animation: room-scroll 2.4s ease-in-out infinite;
}

@keyframes room-drift {
  from {
    transform: scale(1.03) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.07) translate3d(1.2%, -1%, 0);
  }
}

@keyframes room-rise {
  from {
    opacity: 0;
    transform: translateY(0.9rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes room-scroll {
  0%,
  100% {
    transform: scaleY(0.55);
    transform-origin: top;
    opacity: 0.35;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 1;
  }
}

/* ---------- Content sections ---------- */

.room-section {
  padding: clamp(4.5rem, 10vw, 7rem) 0 clamp(3rem, 6vw, 4.5rem);
  background:
    radial-gradient(
      ellipse 80% 35% at 50% 0%,
      rgba(31, 58, 46, 0.18),
      transparent 70%
    ),
    var(--gallery-wall);
}

.room-section--muted {
  background: color-mix(in srgb, var(--gallery-wall) 88%, #0b0b0c);
  border-top: 1px solid rgba(201, 164, 88, 0.08);
  padding-bottom: clamp(5rem, 11vw, 8rem);
}

.room-container {
  width: min(100% - 2.5rem, 40rem);
  margin: 0 auto;
}

.room-container--wide {
  width: min(100% - 2.5rem, 56rem);
}

.room-eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--gold) 78%, transparent);
}

.room-section-head {
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.room-section-head h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.room-section-head p {
  margin: 0;
  max-width: 32rem;
  color: var(--ink-quiet);
  font-size: 1.02rem;
  line-height: 1.7;
}

/* Prose body for Journey / guidance */

.room-prose {
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.8;
}

.room-prose > *:first-child {
  margin-top: 0;
}

.room-prose h2 {
  margin: 2.5rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.room-prose h2:first-child {
  margin-top: 0;
}

.room-prose p {
  margin: 0 0 1.15rem;
}

.room-prose ul {
  margin: 0 0 1.35rem;
  padding-left: 1.2rem;
}

.room-prose li {
  margin-bottom: 0.55rem;
}

.room-prose a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--gold) 35%, transparent);
  transition: color var(--ease), border-color var(--ease);
}

.room-prose a:hover,
.room-prose a:focus-visible {
  color: #d8b66a;
  border-bottom-color: var(--gold);
}

.room-motto {
  margin: 2.5rem 0;
  padding: 1.35rem 1.5rem;
  border-left: 2px solid color-mix(in srgb, var(--gold) 55%, transparent);
  background: rgba(201, 164, 88, 0.06);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* Forward CTA */

.room-forward {
  margin-top: clamp(2.75rem, 6vw, 4rem);
  padding-top: 2rem;
  border-top: 1px solid rgba(201, 164, 88, 0.14);
}

.room-forward p {
  margin: 0 0 1.25rem;
  color: var(--ink-quiet);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 28rem;
}

.room-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1rem;
}

.museum-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: 2px;
  transition:
    background var(--ease),
    color var(--ease),
    border-color var(--ease);
}

.museum-btn--primary {
  background: var(--gold);
  color: #171512;
  border: 1px solid var(--gold);
}

.museum-btn--primary:hover,
.museum-btn--primary:focus-visible {
  background: #d8b66a;
  border-color: #d8b66a;
}

.museum-btn--ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid rgba(201, 164, 88, 0.35);
}

.museum-btn--ghost:hover,
.museum-btn--ghost:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

.museum-btn--quiet {
  padding: 0.35rem 0;
  background: transparent;
  color: var(--gold);
  border: none;
  border-bottom: 1px solid color-mix(in srgb, var(--gold) 35%, transparent);
  border-radius: 0;
}

.museum-btn--quiet:hover,
.museum-btn--quiet:focus-visible {
  color: #d8b66a;
  border-bottom-color: var(--gold);
}

/* Guidance list (Bookshelf optional support) */

.guidance-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.guidance-item {
  border-top: 1px solid rgba(201, 164, 88, 0.14);
}

.guidance-item:last-child {
  border-bottom: 1px solid rgba(201, 164, 88, 0.14);
}

.guidance-link {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 1rem 1.5rem;
  align-items: baseline;
  padding: 1.45rem 0.15rem;
  text-decoration: none;
  color: inherit;
  transition: background 240ms ease-out, transform 240ms ease-out;
}

.guidance-link:hover,
.guidance-link:focus-visible {
  transform: translateY(-2px);
  background: rgba(201, 164, 88, 0.055);
  outline: none;
}

.guidance-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: color-mix(in srgb, var(--gold) 80%, transparent);
}

.guidance-title {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.guidance-meta {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-quiet);
  line-height: 1.55;
}

/* Collection entries */

.collection-list {
  display: flex;
  flex-direction: column;
  gap: clamp(2.5rem, 6vw, 4rem);
}

.collection-entry {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: center;
}

.collection-entry:nth-child(even) {
  direction: rtl;
}

.collection-entry:nth-child(even) > * {
  direction: ltr;
}

.collection-frame {
  display: block;
  overflow: hidden;
  border-radius: 2px;
  background: #0e0c0a;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.collection-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.7s var(--ease-museum);
}

.collection-entry:hover .collection-frame img,
.collection-entry:focus-within .collection-frame img {
  transform: scale(1.03);
}

.collection-copy h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.collection-copy .gallery-title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin: 0 0 0.65rem;
}

.collection-copy .gallery-title-ja {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 400;
}

.collection-copy .gallery-title-en {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--ink-quiet);
}

.collection-blurb {
  margin: 0 0 1.1rem;
  color: var(--ink-quiet);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 28rem;
}

/* Publications grid */

.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr));
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.pub-item a {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.pub-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
  transition: transform 240ms ease-out, box-shadow 240ms ease-out;
}

.pub-item a:hover img,
.pub-item a:focus-visible img {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.42);
}

.pub-item p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  line-height: 1.45;
  color: var(--ink-soft);
  text-align: center;
}

/* Stroke practice set list */

.stroke-set-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 0.85rem;
}

.stroke-set-link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.15rem 1rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(201, 164, 88, 0.16);
  border-radius: 2px;
  background: rgba(201, 164, 88, 0.03);
  transition:
    background 240ms ease-out,
    border-color 240ms ease-out,
    transform 240ms ease-out;
}

.stroke-set-link:hover,
.stroke-set-link:focus-visible {
  background: rgba(201, 164, 88, 0.08);
  border-color: rgba(201, 164, 88, 0.35);
  transform: translateY(-2px);
  outline: none;
}

.stroke-set-link strong {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.stroke-set-link span {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* Footer */

.museum-footer {
  border-top: 1px solid rgba(201, 164, 88, 0.1);
  padding: 2.25rem 0 2.5rem;
  background: var(--gallery-deep);
}

.museum-footer-inner {
  width: min(100% - 2.5rem, 64rem);
  margin: 0 auto;
  text-align: center;
}

.museum-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.15rem;
  margin-bottom: 1.15rem;
}

.museum-footer a {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  text-decoration: none;
}

.museum-footer a:hover {
  color: var(--gold);
}

.museum-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-quiet);
}

.museum-footer p + p {
  margin-top: 0.65rem;
}

/* Reveal */

.museum-page .reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition:
    opacity 0.9s var(--ease-museum),
    transform 0.9s var(--ease-museum);
}

.museum-page .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .room-hero-media img,
  .room-hero-brand,
  .room-hero-inner h1,
  .room-hero-lead,
  .room-hero-scroll-line,
  .guidance-link,
  .stroke-set-link,
  .collection-frame img {
    animation: none !important;
    transition: none !important;
  }

  .room-hero-media img {
    transform: none;
  }

  .museum-page .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .guidance-link:hover,
  .guidance-link:focus-visible,
  .stroke-set-link:hover,
  .stroke-set-link:focus-visible {
    transform: none;
  }
}

@media (max-width: 720px) {
  .collection-entry,
  .collection-entry:nth-child(even) {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .museum-nav {
    gap: 0.3rem 0.75rem;
  }

  .museum-nav a {
    font-size: 0.72rem;
  }

  .guidance-link {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}