/* お知らせ、栞UI、装画の扉ページ、断章、依頼一覧、連絡リンクの部品CSS。 */
/* layout.cssの配置内を整え、responsive.cssが最後に調整する。 */
.news-list,
.table-of-contents__list,
.request-list {
  list-style: none;
  padding: 0;
}

.table-of-contents__list {
  margin: 0;
}

.table-of-contents__list li {
  border-block-start: 1px solid var(--rule);
}

.table-of-contents__list li:last-child {
  border-block-end: 1px solid var(--rule);
}

.table-of-contents__list a {
  align-items: baseline;
  display: grid;
  gap: clamp(16px, 3vw, 36px);
  grid-template-columns: auto 1fr auto;
  outline: 2px solid transparent;
  outline-offset: 5px;
  padding-block: clamp(16px, 2.2vw, 24px);
  position: relative;
  text-decoration: none;
  transition: outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter);
}

.table-of-contents__list a > * {
  position: relative;
  z-index: 1;
}

.table-of-contents__list a::before,
.table-of-contents__list a::after {
  content: "";
  pointer-events: none;
  position: absolute;
  transition: opacity var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
}

/* v5指定の紙影。影の形は静止させ、合成負荷の軽いopacity/transformだけを動かす。 */
.table-of-contents__list a::before {
  background: rgba(243, 239, 230, 0.94);
  box-shadow: 0 7px 18px rgba(34, 48, 74, 0.11);
  inset: 4px 0;
  opacity: 0;
  transform: translateY(4px) scale(0.992);
}

/* 行頭へ差し込まれる小型の朱栞。 */
.table-of-contents__list a::after {
  background: var(--accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 78%, 0 100%);
  inset-block-start: 50%;
  inset-inline-start: -0.82rem;
  opacity: 0;
  padding: 0.48rem 0.14rem;
  transform: translate(-8px, -64%) scaleY(0.78);
  transform-origin: top center;
}

.table-of-contents__list a > span:first-child {
  color: var(--accent);
}

.table-of-contents__list a > span:nth-child(2) {
  color: var(--sepia);
  transition: color var(--state-duration) var(--ease-enter);
}

.table-of-contents__list a:focus-visible::before,
.table-of-contents__list a:focus-visible::after {
  opacity: 1;
  transform: translate(0, -50%) scaleY(1);
}

.table-of-contents__list a:focus-visible::before {
  transform: none;
}

.table-of-contents__list a:focus-visible > span:nth-child(2) {
  color: var(--ink);
}

.line-break--mobile {
  display: none;
}

.news-item {
  border-block-start: 1px solid var(--rule);
  display: grid;
  gap: 1.5rem;
  grid-template-columns: auto 1fr;
  padding-block: 1.15rem;
}

.news-item:last-child {
  border-block-end: 1px solid var(--rule);
}

.news-item time {
  color: var(--ink);
}

.bookmark-button {
  align-items: center;
  background: transparent;
  border: 1px solid var(--sepia);
  color: var(--sepia);
  cursor: pointer;
  display: inline-flex;
  flex: 0 0 auto;
  justify-content: center;
  outline: 2px solid transparent;
  outline-offset: 5px;
  padding: 0;
  /* キーボード・タッチ操作を保証する44pxの最小タップ領域。 */
  height: 44px;
  transition: background-color var(--state-duration) var(--ease-enter), border-color var(--state-duration) var(--ease-enter), color var(--state-duration) var(--ease-enter), outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
  width: 44px;
}

.bookmark-button svg {
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.bookmark-button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}

.resume-link {
  border-block: 1px solid var(--sepia);
  display: inline-block;
  margin-block-start: 2rem;
  outline: 2px solid transparent;
  outline-offset: -6px;
  padding-block: 0.75rem;
  text-align: start;
  text-decoration: none;
  transition: color var(--state-duration) var(--ease-enter), outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter);
}

.resume-link[hidden] {
  display: none;
}

.resume-link small {
  display: block;
}

.envelope-button:focus-visible,
.contact-secondary:focus-visible,
.resume-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -6px;
}

.book-spread__index,
.book-spread__summary,
[data-fragment-line] {
  display: block;
}

.book-spread h3 {
  margin-block-start: 1rem;
}

.fragment-char {
  display: inline-block;
}

.fragment-bracket {
  color: var(--accent);
}

.running-bookmark {
  /* ページ柱へ残す小型の栞印。布片の形を保つ装飾用padding。 */
  background: var(--accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%);
  inset-block-start: 0;
  inset-inline-end: clamp(20px, 4vw, 44px);
  opacity: 0;
  padding: 1rem 0.34rem;
  pointer-events: none;
  position: absolute;
  transform: translateY(-72%) scaleY(0.76);
  transform-origin: top center;
  transition: opacity 0.8s var(--ease-enter), transform 0.9s var(--ease-enter);
  z-index: 9;
}

.book-page.is-bookmarked > .running-bookmark {
  opacity: 0.9;
  transform: translateY(0) scaleY(1);
}

[data-ambient] {
  position: relative;
}

.book-spread__visual {
  position: relative;
}

/* 画像面だけを操作対象にし、背面の作品リンクとのクリック競合を避ける。 */
.book-opening-control {
  background: transparent;
  border: 0;
  cursor: pointer;
  inset: 0;
  outline: 2px solid transparent;
  outline-offset: -7px;
  padding: 0;
  position: absolute;
  transition: outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter);
  z-index: 10;
}

.book-opening-control:focus-visible {
  outline-color: var(--accent);
  outline-offset: -9px;
}

.book-opening-hint {
  background: rgba(243, 239, 230, 0.82);
  color: var(--ink);
  font-size: 0.68rem;
  inset-block-end: clamp(14px, 2.4vw, 28px);
  inset-inline-start: clamp(14px, 2.4vw, 28px);
  letter-spacing: 0.08em;
  line-height: 1.5;
  opacity: 1;
  padding: 0.35rem 0.55rem;
  pointer-events: none;
  position: absolute;
  transform: none;
  transition: opacity var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
  z-index: 11;
}

.book-spread__visual.is-opening-page-open .book-opening-hint {
  opacity: 0;
  transform: translateY(5px);
}

.book-spread--night .book-opening-hint {
  background: rgba(34, 48, 74, 0.8);
  color: var(--paper);
}

/* aria-liveの読み上げだけを残し、版面には影響させない。 */
.book-opening-announcement {
  clip-path: inset(50%);
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.book-opening-page {
  --opening-shadow-opacity: 0;
  --opening-shadow-x: 0px;
  --opening-shadow-y: 0px;
  --opening-shadow-scale: 0.84;
  inset: 0;
  pointer-events: none;
  position: absolute;
  visibility: visible;
  transform-style: preserve-3d;
  z-index: 8;
}

.book-opening-page::before {
  background: radial-gradient(ellipse at center, rgba(28, 24, 20, 0.38) 0%, rgba(28, 24, 20, 0.02) 70%, rgba(28, 24, 20, 0) 100%);
  border-radius: 50%;
  bottom: 2%;
  content: "";
  filter: blur(4px);
  inset-inline: 12%;
  opacity: var(--opening-shadow-opacity);
  pointer-events: none;
  position: absolute;
  top: 84%;
  height: clamp(20px, 5vw, 44px);
  transform: translate3d(var(--opening-shadow-x), var(--opening-shadow-y), 0) scaleX(var(--opening-shadow-scale));
  transform-origin: center top;
  z-index: 0;
}

.book-opening-page__leaf {
  backface-visibility: hidden;
  background-color: #eee7da;
  background-image: url("opening-washi.webp");
  background-position: center;
  background-size: cover;
  border: 1px solid rgba(138, 115, 87, 0.32);
  box-shadow:
    2px 6px 16px rgba(34, 48, 74, 0.26),
    2px 1px 0 rgba(255, 244, 228, 0.36);
  color: var(--ink);
  inset: 0;
  outline: 0 solid transparent;
  position: absolute;
  transform-origin: 100% 50%;
  transform-style: preserve-3d;
  transform: translateY(0.8px) rotate(0.4deg);
  will-change: transform, opacity;
}

/* 裏面（-Yで反対向き）を見せるためのベース。 */
.book-opening-page__leaf::before {
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0) 55%),
    url("opening-washi.webp");
  background-position: center;
  background-size: cover, cover;
  bottom: 0;
  content: "";
  left: 0;
  opacity: 0.94;
  pointer-events: none;
  position: absolute;
  right: 0;
  top: 0;
  transform-origin: 50% 50%;
  transition: none;
}

/* 扉端に沿って光が流れ、めくり中にわずかに移動する帯。 */
.book-opening-page__leaf::after {
  background: none;
  content: "";
  inset-block: 0;
  inset-inline: 0;
  opacity: 0;
  transition: none;
  position: absolute;
  transform: none;
}

.book-opening-page__content {
  align-content: center;
  display: grid;
  inset: 0;
  padding: clamp(34px, 8vw, 96px);
  position: absolute;
}

.book-opening-page__chapter {
  color: var(--accent);
}

.book-opening-page__rule {
  background: var(--rule);
  margin-block: 1.2rem 1.8rem;
  padding-block: 0.5px;
}

/* 落款は形そのものに固定寸法が必要な小型装飾。 */
.book-opening-page__seal {
  border: 1px solid var(--accent);
  box-shadow: inset 0 0 0 2px rgba(122, 46, 46, 0.16);
  color: var(--accent);
  display: grid;
  height: 38px;
  justify-self: end;
  line-height: 1;
  margin-block-start: clamp(28px, 5vw, 56px);
  opacity: 0.86;
  place-items: center;
  transform: scale(1) rotate(-2deg);
  transition: opacity 0.2s var(--ease-enter), transform 0.2s var(--ease-enter);
  width: 38px;
}

@keyframes opening-leaf-breathe {
  0% {
    transform: translateY(0) rotate(0.8deg);
  }

  50% {
    transform: translateY(1px) rotate(-0.4deg);
  }

  100% {
    transform: translateY(0) rotate(0.8deg);
  }
}

.book-ambience {
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  position: absolute;
  z-index: 2;
}

.aquarium-bubble,
.moving-dust,
.night-star,
.night-firefly,
.profile-light-region,
.profile-dust {
  position: absolute;
}

/* 常時気泡を水槽外へ出さないため、水面から底までの実測範囲で切る。 */
.book-ambience--aquarium {
  clip-path: inset(30% 39.5% 34% 16%);
}

/* 気泡は画像座標で水槽内へ置き、固定paddingで小さな粒径を保つ。 */
.aquarium-bubble {
  border: 1px solid rgba(143, 161, 169, 0.58);
  border-radius: 50%;
  opacity: 0.24;
  padding: 0.25rem;
  transform: translate(-50%, -50%);
}

/* 午後の光に馴染む暖セピアの埃。小型装飾の粒径を固定paddingで保つ。 */
.moving-dust {
  background: rgba(166, 139, 97, 0.72);
  border-radius: 50%;
  opacity: 0.2;
  padding: 2px;
}

.moving-dust--one {
  left: 50%;
  top: 40%;
}

.moving-dust--two {
  left: 58%;
  top: 51%;
}

.moving-dust--three {
  left: 67%;
  top: 36%;
}

.chapter-page-turn {
  background: rgba(34, 48, 74, 0.14);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  inset-block-start: 0;
  inset-inline-end: 0;
  opacity: 0;
  padding: clamp(28px, 4vw, 52px);
  pointer-events: none;
  position: absolute;
  transform: translate(62%, -62%) scale(0.76);
  transform-origin: top right;
  z-index: 4;
}

[data-seal-pop] {
  transform-origin: center;
}

.ink-trail__drop {
  background: var(--accent);
  border-radius: 50%;
  /* fine pointer専用の小型インク滴。形を保つ固定寸法。 */
  height: 5px;
  left: 0;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  top: 0;
  transform: translate3d(-20px, -20px, 0);
  transition: opacity 0.2s var(--ease-enter);
  width: 5px;
  z-index: 30;
}

/* 鉤括弧の前後へ一字分の静かな余白を置く。 */
[data-fragment-line] {
  padding-inline: 1em;
}

.night-light {
  background: rgba(225, 173, 96, 0.2);
  border-radius: 50%;
  display: grid;
  filter: blur(1px);
  /* 画像内の一点光源に重ねる装飾光。paddingで光輪を作る。 */
  left: 49.193%;
  opacity: 0.52;
  padding: clamp(1px, 0.26vw, 4px);
  pointer-events: none;
  position: absolute;
  place-items: center;
  top: 55.475%;
  transform: translate(-50%, -50%);
}

.night-light span {
  background: rgba(247, 214, 153, 0.9);
  border-radius: 50%;
  display: block;
  /* 灯りの芯を画像内光源の寸法へ合わせる装飾。 */
  padding: clamp(1px, 0.2vw, 3px);
}

/* 夜空の実在する余白へ置く小さな星。画像座標ランタイムで中心を固定する。 */
.night-star {
  background: rgba(240, 226, 190, 0.88);
  border-radius: 50%;
  box-shadow: 0 0 5px rgba(236, 216, 166, 0.38);
  opacity: 0.34;
  padding: 1px;
  transform: translate(-50%, -50%);
}

.night-star--two {
  padding: 1.5px;
}

.night-firefly {
  background: rgba(225, 199, 104, 0.92);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(225, 199, 104, 0.58);
  opacity: 0.32;
  padding: 2px;
  transform: translate(-50%, -50%);
}

/* 洗濯物写真の光と埃は写真と同じ座標面に置き、画像外へ出さない。 */
.profile-image {
  position: relative;
}

.profile-light-region {
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.profile-light-band {
  background: rgba(242, 215, 155, 0.3);
  clip-path: polygon(0 0, 16.667% 0, 100% 100%, 58.333% 100%);
  inset: 87% 41% 0 35%;
  mix-blend-mode: screen;
  position: absolute;
  transform-origin: 54% 69%;
}

.profile-dust {
  background: rgba(244, 224, 177, 0.9);
  border-radius: 50%;
  box-shadow: 0 0 5px rgba(237, 207, 145, 0.42);
  opacity: 0.26;
  padding: 2px;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.seal {
  filter: blur(0.18px);
  opacity: 0.84;
}

.seal__frame,
.seal__mark {
  fill: none;
  stroke: var(--accent);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.7;
  vector-effect: non-scaling-stroke;
}

.bookmark-status {
  color: var(--accent);
  font-size: 0.875rem;
}

.request-list {
  border-block: 1px solid var(--rule);
}

.request-list li {
  padding-block: 0.85rem;
}

.request-list li + li {
  border-block-start: 1px solid var(--rule);
}

.request-list li::before {
  color: var(--accent);
  content: "—";
  margin-inline-end: 0.8rem;
}

.profile-desk {
  border-block: 1px solid var(--rule);
  margin-block-start: 2.4rem;
  padding-block: 1.25rem;
}

.profile-objects {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.profile-object {
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  outline: 2px solid transparent;
  outline-offset: 3px;
  padding: 0.5rem 0.65rem;
  transition: background-color var(--state-duration) var(--ease-enter), border-color var(--state-duration) var(--ease-enter), color var(--state-duration) var(--ease-enter), outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
}

.profile-object svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.35;
}

.profile-object[aria-pressed="true"] {
  background: rgba(231, 223, 209, 0.72);
  border-color: var(--sepia);
  color: var(--accent);
  transform: translateY(-2px);
}

.profile-object:focus-visible {
  outline-color: var(--accent);
  outline-offset: 5px;
}

.profile-note {
  border-inline-start: 2px solid var(--accent);
  color: var(--sepia);
  font-size: 0.875rem;
  margin-block-start: 1rem;
  padding-inline-start: 1rem;
}

.letter-card {
  background: rgba(243, 239, 230, 0.94);
  border: 1px solid var(--rule);
  padding: clamp(24px, 5vw, 56px);
}

.letter-card__to {
  color: var(--accent);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
}

.letter-card__body {
  border-block-start: 1px solid var(--rule);
  margin-block-start: 1rem;
  padding-block-start: 1.5rem;
}

.letter-card__actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-block-start: 2rem;
}

.envelope-button {
  align-items: center;
  border: 1px solid var(--ink);
  background: var(--paper);
  display: inline-flex;
  gap: 1rem;
  outline: 2px solid transparent;
  outline-offset: -6px;
  padding: 0.75rem 1.1rem;
  position: relative;
  text-decoration: none;
  transition: border-color var(--state-duration) var(--ease-enter), color var(--state-duration) var(--ease-enter), outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
}

.envelope-button__icon {
  display: block;
  position: relative;
}

.envelope-button__icon svg {
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1;
}

.envelope-button__seal {
  background: var(--accent);
  border-radius: 50%;
  bottom: 2px;
  color: var(--paper);
  display: grid;
  font-size: 0.75rem;
  /* 封蝋印そのものの形を保つ意図的な固定寸法。 */
  height: 24px;
  place-items: center;
  position: absolute;
  right: 3px;
  width: 24px;
}

.envelope-button__seal::after {
  background: rgba(255, 255, 255, 0.48);
  border-radius: 50%;
  content: "";
  inset: 3px 10px 12px 4px;
  opacity: 0.24;
  position: absolute;
  transform: translateX(-2px);
  transition: opacity var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
}

.contact-secondary {
  border-block-end: 1px solid var(--sepia);
  color: var(--sepia);
  outline: 2px solid transparent;
  outline-offset: 5px;
  padding-block: 0.4rem;
  text-decoration: none;
  transition: border-color var(--state-duration) var(--ease-enter), color var(--state-duration) var(--ease-enter), outline-color var(--state-duration) var(--ease-enter), outline-offset var(--state-duration) var(--ease-enter), transform var(--state-duration) var(--ease-enter);
}

.envelope-button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-4px);
}

.envelope-button:focus-visible .envelope-button__seal::after {
  opacity: 0.92;
  transform: translateX(3px);
}

.contact-secondary:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.sample-note {
  margin-block-start: 1rem;
}