/* ---------- Tokens ---------- */
:root {
  --paper: #fbf8f2;
  --paper-deep: #f3eee4;
  --ink: #2a2622;
  --ink-soft: #5d554c;
  --accent: #8a6d3b;       /* muted gilt */
  --line: #d9cfbf;

  --serif-en: "Cormorant Garamond", "Garamond", "Times New Roman", serif;
  --sans-en: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;
  --serif-ja: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans-ja: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;

  --measure: 68rem;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  padding-inline: 1.25rem;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans-en);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

[lang="ja"] {
  font-family: var(--sans-ja);
  line-height: 1.95;
  letter-spacing: 0.04em;
}

/* ---------- Masthead ---------- */
.masthead {
  text-align: center;
  padding-block: clamp(3rem, 9vw, 6rem) 2rem;
}

.eyebrow {
  margin: 0 0 1.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}

.masthead h1 {
  margin: 0;
  font-weight: 400;
  line-height: 1.1;
}
.masthead h1 .en {
  display: block;
  font-family: var(--serif-en);
  font-size: clamp(2.75rem, 7vw, 4.75rem);
  letter-spacing: 0.06em;
}
.masthead h1 .ja {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--serif-ja);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  letter-spacing: 0.3em;
  color: var(--ink-soft);
}

.rule {
  width: 5rem;
  height: 1px;
  margin: 2rem auto 0;
  background: var(--accent);
  position: relative;
}
.rule::after {             /* small diamond ornament */
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 6px; height: 6px;
  background: var(--paper);
  border: 1px solid var(--accent);
  transform: translate(-50%, -50%) rotate(45deg);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 2.5rem;
  max-width: var(--measure);
  margin: 1.5rem auto 0;
  border-bottom: 1px solid var(--line);
}

.tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 0.75rem 0.25rem 0.9rem;
  cursor: pointer;
  color: var(--ink-soft);
  text-align: center;
  transition: color 0.2s, border-color 0.2s;
}
.tab .en {
  display: block;
  font-family: var(--serif-en);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}
.tab .ja {
  display: block;
  font-family: var(--serif-ja);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.tab:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 4px;
}

/* ---------- Letter body ---------- */
.letter {
  max-width: var(--measure);
  margin: 0 auto;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

/* Each paragraph pair is its own row so EN and JA stay aligned */
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: var(--gutter);
  position: relative;
}
.pair::before {            /* hairline between the columns */
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 1px;
  background: var(--line);
}
.pair > * { margin: 0; padding-bottom: 1.4em; }

.pair.heading h2 {
  font-weight: 500;
  padding-bottom: 1rem;
}
.pair.heading .en {
  font-family: var(--serif-en);
  font-size: 2rem;
  font-style: italic;
}
.pair.heading .ja {
  font-family: var(--serif-ja);
  font-size: 1.5rem;
  padding-top: 0.25rem;
}

.signoff { padding-top: 1rem; }
.signature {
  display: inline-block;
  margin-top: 0.4rem;
  font-family: var(--serif-en);
  font-size: 1.6rem;
  font-style: italic;
}
.signoff [lang="ja"] .signature {
  font-family: var(--serif-ja);
  font-style: normal;
  font-size: 1.35rem;
}

/* ---------- Photographs ---------- */
.photo {
  margin: 1.5rem 0 3rem;
  padding: 0;
}
.photo img,
.photo .placeholder {
  display: block;
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  padding: 0.6rem;            /* soft mat, like a mounted print */
  background: #fff;
  box-shadow: 0 1px 2px rgba(42, 38, 34, 0.06), 0 8px 24px rgba(42, 38, 34, 0.06);
}
.photo .placeholder {
  aspect-ratio: 3 / 2;
  display: grid;
  place-items: center;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink-soft);
  background: var(--paper-deep);
  background-clip: content-box;
}

/* Several photos on one mat, scaled to a shared height.
   Set each image's aspect ratio (width / height) inline: style="--ar: 1.333" */
.photo-row {
  display: flex;
  gap: 0.6rem;
  margin: 1.5rem 0 3rem;
  padding: 0.6rem;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 1px 2px rgba(42, 38, 34, 0.06), 0 8px 24px rgba(42, 38, 34, 0.06);
}
.photo-row img {
  flex: var(--ar, 1.5) 1 0;
  min-width: 0;
  height: auto;
}
.photo-row + .photo-row,
.photo-row + .photo,
.photo + .photo-row,
.photo + .photo { margin-top: -1.5rem; }

/* Narrower, centered photos when wanted: <figure class="photo narrow"> */
.photo.narrow { max-width: 60%; margin-inline: auto; }

figcaption {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin-top: 0.85rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
  text-align: center;
}
figcaption .en { font-family: var(--serif-en); font-style: italic; font-size: 1rem; }

/* ---------- Footer ---------- */
.colophon {
  text-align: center;
  padding-block: 0 4rem;
  color: var(--accent);
  font-family: var(--serif-en);
  letter-spacing: 0.35em;
  font-size: 0.85rem;
}
.colophon .rule { margin-bottom: 1.5rem; }

/* ---------- Small screens: stack EN above JA ---------- */
@media (max-width: 720px) {
  .pair { grid-template-columns: 1fr; }
  .pair::before { display: none; }
  .pair > .en { padding-bottom: 0.6em; }
  .pair > .ja {
    padding-left: 1rem;
    border-left: 1px solid var(--line);
    margin-bottom: 1.2em;
  }
  .pair.heading > .ja { border-left: 0; padding-left: 0; }
  .photo.narrow { max-width: 100%; }
}