/* /haiku/ 共通スタイル — LP(/lp/)の夜のトーンを踏襲 */
:root {
  --washi: #F4F0E6;
  --sumi: #2A2D33;
  --usuzumi: #6B7078;
  --sage: #CFE0D2;
  --moss: #7E9483;
  --moss-deep: #5B7160;
  --night: #1B2130;
  --dawn: #55617A;
  --asahi: #E9DFC8;
  --shu: #B5493B;
  --font-mincho: 'Shippori Mincho', 'Hiragino Mincho ProN', serif;
  --font-ui: 'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', sans-serif;
}
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: 16px;
  line-height: 2;
  color: var(--sumi);
  background: var(--night);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
.pixel { image-rendering: pixelated; }
a { color: inherit; }

/* 和紙のざらつき */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

.site-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 24px;
}
.site-head a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-head img { width: 32px; height: 32px; border-radius: 8px; }
.site-head span {
  font-family: var(--font-mincho);
  font-size: 15px;
  letter-spacing: 0.14em;
  color: rgba(244,240,230,0.85);
}

/* ---------- 句の個別ページ: 夜のとばり ---------- */
.poem-night {
  min-height: 88svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 24px 64px;
  text-align: center;
  color: var(--washi);
}
.headnote {
  max-width: 30em;
  font-family: var(--font-mincho);
  font-size: 12.5px;
  line-height: 2.2;
  letter-spacing: 0.08em;
  color: rgba(244,240,230,0.5);
  margin-bottom: 40px;
}
.poem-main {
  writing-mode: vertical-rl;
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: clamp(30px, 7vw, 52px);
  letter-spacing: 0.28em;
  line-height: 2.2;
  /* 縦書きの折り返し: 1列に収まる句はそのまま1列で。収まらない長い句は
     text-wrap:balance で列を均等に割り、末尾に1文字だけ残る"みなし児改行"を防ぐ。
     max-height は画面が低いときだけ svh 側で早めに折り返す(1列が画面を突き抜けない)。 */
  max-height: min(21em, 62svh);
  text-wrap: balance;
  color: var(--washi);
  margin: 0 auto;
}
.poem-main.long { font-size: clamp(24px, 5.6vw, 40px); }
h1.poem-main { font-weight: 600; }
.rakkan {
  display: inline-block;
  writing-mode: vertical-rl;
  font-family: var(--font-mincho);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--washi);
  background: var(--shu);
  padding: 10px 5px;
  border-radius: 3px;
  margin-top: 28px;
}
.poem-reading {
  margin-top: 36px;
  font-size: 13.5px;
  letter-spacing: 0.22em;
  color: rgba(244,240,230,0.6);
}
.poem-context {
  margin-top: 18px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  line-height: 2;
  color: rgba(244,240,230,0.5);
}
.poem-context a { color: rgba(244,240,230,0.65); text-decoration: none; border-bottom: 1px solid rgba(244,240,230,0.25); }
.poem-context a:hover { color: rgba(244,240,230,0.9); }

/* ---------- 夜明けの帯: 夜→薄明→曙→和紙(LPの空の変化と同じ色をゆっくり通る) ---------- */
.dawn-band {
  height: clamp(420px, 78svh, 720px);
  background: linear-gradient(180deg,
    var(--night) 0%,
    var(--night) 14%,
    #232B40 32%,
    #313A52 46%,
    var(--dawn) 60%,
    #7A7F8D 71%,
    #9EA0A2 80%,
    #C8C0AE 88%,
    var(--asahi) 94%,
    var(--washi) 100%);
}

/* ---------- 解説: 和紙の帯 ---------- */
.poem-day {
  background: var(--washi);
  padding: 40px 24px 64px;
}
.day-inner { max-width: 560px; margin: 0 auto; }
.day-label {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--moss-deep);
  margin-bottom: 24px;
}
.commentary {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(207,224,210,0.4);
  border-radius: 16px;
  padding: 20px;
}
.commentary img { width: 50px; flex-shrink: 0; }
.commentary p {
  font-size: 14.5px;
  line-height: 2.2;
  letter-spacing: 0.04em;
  color: var(--sumi);
}

/* ---------- 共有 ---------- */
.share {
  margin-top: 40px;
  text-align: center;
}
.share-label {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--usuzumi);
  margin-bottom: 16px;
}
.share-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.share-row button, .share-row a {
  appearance: none;
  border: 1px solid rgba(107,112,120,0.35);
  background: rgba(255,255,255,0.6);
  border-radius: 999px;
  padding: 9px 20px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--sumi);
  text-decoration: none;
  cursor: pointer;
  line-height: 1.6;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.share-row button:hover, .share-row a:hover {
  background: #fff;
  border-color: var(--moss);
}
.share-native { display: none; }
.share-native.on { display: inline-block; }
.copy-done { color: var(--moss-deep); border-color: var(--moss) !important; }

/* ---------- 前後の句 ---------- */
.pager {
  margin-top: 56px;
  display: flex;
  gap: 12px;
}
.pager a {
  flex: 1 1 0;
  min-width: 0;
  text-decoration: none;
  background: #FBF9F2;
  border: 1px solid rgba(107,112,120,0.16);
  border-radius: 4px;
  padding: 16px 16px 14px;
  box-shadow: 0 1px 2px rgba(42,45,51,0.05);
  transition: border-color 0.3s ease;
}
.pager a:hover { border-color: var(--moss); }
.pager .dir {
  display: block;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--moss-deep);
  margin-bottom: 6px;
}
.pager .txt {
  display: block;
  font-family: var(--font-mincho);
  font-size: 14px;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--sumi);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pager .next { text-align: right; }
.pager-index {
  margin-top: 28px;
  text-align: center;
}
.pager-index a {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--moss-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(91,113,96,0.35);
}

/* ---------- DL導線(夜にもどる) ---------- */
.cta {
  background: var(--night);
  color: var(--washi);
  text-align: center;
  padding: 96px 24px 88px;
}
.cta h2 {
  font-family: var(--font-mincho);
  font-size: clamp(24px, 5.5vw, 36px);
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.cta .sub {
  font-size: 13.5px;
  letter-spacing: 0.1em;
  line-height: 2.2;
  color: rgba(244,240,230,0.6);
  margin-bottom: 36px;
}
.cta .app-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  margin: 0 auto 24px;
}
.badge img { height: 52px; margin: 0 auto; }
.badge a { display: block; }
.badge a:hover img { opacity: 0.85; }
.badge .coming {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(244,240,230,0.55);
}
.cta .lp-link { margin-top: 28px; }
.cta .lp-link a {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: rgba(244,240,230,0.65);
  text-decoration: none;
  border-bottom: 1px solid rgba(244,240,230,0.25);
}

footer {
  background: var(--night);
  color: rgba(244,240,230,0.5);
  padding: 0 24px 56px;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: 0.06em;
}
footer nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-bottom: 24px;
}
footer a { color: rgba(244,240,230,0.75); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .credit { line-height: 2.2; }

/* ---------- 一覧ページ ---------- */
.index-hero {
  text-align: center;
  padding: 64px 24px 72px;
  color: var(--washi);
}
.index-hero h1 {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: clamp(28px, 6vw, 44px);
  letter-spacing: 0.2em;
  margin-bottom: 18px;
}
.index-hero p {
  font-size: 13.5px;
  letter-spacing: 0.12em;
  line-height: 2.2;
  color: rgba(244,240,230,0.6);
}
.index-body {
  background: var(--washi);
  padding: 56px 24px 80px;
}
.index-inner { max-width: 720px; margin: 0 auto; }
.toc {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 10px;
  margin-bottom: 64px;
}
.toc a {
  font-family: var(--font-mincho);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--moss-deep);
  text-decoration: none;
  border: 1px solid rgba(126,148,131,0.4);
  border-radius: 999px;
  padding: 6px 14px;
  line-height: 1.7;
  background: rgba(255,255,255,0.5);
}
.toc a:hover { background: #fff; border-color: var(--moss-deep); }
.chapter { margin-bottom: 72px; }
.chapter-head {
  background: #FBF9F2;
  border: 1px solid rgba(107,112,120,0.16);
  border-top: 3px solid var(--moss);
  border-radius: 4px;
  padding: 24px 22px;
  box-shadow: 0 1px 2px rgba(42,45,51,0.05), 0 12px 28px -18px rgba(42,45,51,0.25);
  margin-bottom: 28px;
}
.chapter-head .row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.chapter-head h2 {
  font-family: var(--font-mincho);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--sumi);
}
.chapter-head .count {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--usuzumi);
}
.chapter-head .era {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--moss-deep);
  margin: 4px 0 10px;
}
.chapter-head .desc {
  font-size: 13px;
  line-height: 2.1;
  color: rgba(42,45,51,0.78);
}
.poem-links { list-style: none; columns: 2; column-gap: 32px; }
@media (max-width: 560px) { .poem-links { columns: 1; } }
.poem-links li { break-inside: avoid; }
.poem-links a {
  display: block;
  font-family: var(--font-mincho);
  font-size: 15px;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--sumi);
  text-decoration: none;
  padding: 7px 2px;
  border-bottom: 1px solid rgba(107,112,120,0.14);
}
.poem-links a:hover { color: var(--moss-deep); }
.back-top { text-align: center; margin-top: 12px; }
.back-top a {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--usuzumi);
  text-decoration: none;
}

@media (prefers-reduced-motion: no-preference) {
  .rv { opacity: 0; transform: translateY(14px); transition: opacity 1s ease, transform 1s cubic-bezier(0.2,0.6,0.2,1); }
  .rv.in { opacity: 1; transform: none; }
  .no-js .rv { opacity: 1; transform: none; }
}

/* 日英の出し分け(既定は日本語) */
.en { display: none; }
html[data-lang="en"] .ja { display: none; }
html[data-lang="en"] .en { display: inline; }

/* 句ページ下部の回遊: 前後の句(ページャ) → ことばをたどる → 一覧へ の順。
   ことばカードはページャの紙カードと同じトーンで、ひとつの群に見せる */
.poem-words {
  margin-top: 12px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  background: #FBF9F2;
  border: 1px solid rgba(107,112,120,0.16);
  border-radius: 4px;
  padding: 12px 16px;
  box-shadow: 0 1px 2px rgba(42,45,51,0.05);
}
.poem-words .pw-label {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--moss-deep);
  white-space: nowrap;
}
.poem-words .pw-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}
.poem-words a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mincho);
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: var(--sumi);
  text-decoration: none;
  border: 1px solid rgba(126,148,131,0.4);
  border-radius: 999px;
  padding: 3px 13px;
  line-height: 1.8;
  background: rgba(255,255,255,0.6);
}
.poem-words a:hover { background: #fff; border-color: var(--moss-deep); color: var(--moss-deep); }
.poem-words a .gl {
  font-family: var(--font-ui);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--usuzumi);
}


/* 一覧ヒーローから頻出語ページへの導線(日本語のみ) */
.index-hero .words-link { margin-top: 26px; }
.index-hero .words-link a {
  font-family: var(--font-mincho);
  font-size: 13.5px;
  letter-spacing: 0.18em;
  color: rgba(244,240,230,0.75);
  text-decoration: none;
  border-bottom: 1px solid rgba(244,240,230,0.3);
  padding-bottom: 3px;
}
.index-hero .words-link a:hover { color: var(--washi); }

/* 言語トグル(JA/EN) */
.lang-toggle {
  margin-left: auto;
  display: inline-flex;
  gap: 2px;
  border: 1px solid rgba(107,112,120,0.35);
  border-radius: 999px;
  padding: 2px;
  background: rgba(244,240,230,0.06);
}
.lang-toggle button, .lang-toggle a {
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--usuzumi);
  background: transparent;
  border: 0;
  border-radius: 999px;
  padding: 3px 11px;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.8;
}
.lang-toggle button.on, .lang-toggle a.on { background: var(--moss); color: var(--washi); }
.site-head > a { display: inline-flex; align-items: center; gap: 8px; }
.site-head { display: flex; align-items: center; }

/* 句の読み上げ(再生ボタン) */
.play-poem {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 20px auto 0;
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--washi);
  background: var(--moss);
  border: 0;
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}
.play-poem:hover { background: var(--moss-deep); }
.play-poem:active { transform: scale(0.97); }
.play-poem .ico { width: 19px; height: 19px; color: var(--washi); display: inline-flex; }
.play-poem .ico svg { width: 19px; height: 19px; }
.play-poem .ico .w2 { opacity: 0.9; }
.play-poem.playing .ico .w1, .play-poem.playing .ico .w2 { animation: sndwave 1.1s ease-in-out infinite; }
.play-poem.playing .ico .w2 { animation-delay: 0.18s; }
@keyframes sndwave { 0%,100% { opacity: 0.35; } 50% { opacity: 1; } }
.play-poem[hidden] { display: none; }