/* =========================================================
   夜送舟艇のプリン艇団
   本文ページ
========================================================= */


/* =========================================================
   基本設定
========================================================= */

* {
  box-sizing: border-box;
}


html {
  scroll-behavior: smooth;
}


body {
  margin: 0;
  padding: 0;

  min-width: 320px;

  color: #25293a;

  font-family:
    "Yu Mincho",
    "Hiragino Mincho ProN",
    "Hiragino Mincho Pro",
    "Noto Serif JP",
    serif;

  line-height: 1.9;

  background-color: #07122f;

  background-image:
    linear-gradient(
      rgba(4, 10, 35, 0.10),
      rgba(4, 10, 35, 0.23)
    ),
    url("yasou-novel-bg.png");

  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  background-repeat: no-repeat;
}


/* =========================================================
   ページ全体
========================================================= */

.site-wrapper {
  width: 100%;
  min-height: 100vh;

  padding:
    60px
    20px
    50px;
}


/* =========================================================
   作品ヘッダー
========================================================= */

.novel-header {
  max-width: 920px;

  margin:
    0 auto
    30px;

  text-align: center;

  color: #f7f8ff;

  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.75),
    0 0 20px rgba(125, 145, 255, 0.25);
}


.novel-header__label {
  margin:
    0 0
    12px;

  font-family:
    Georgia,
    "Times New Roman",
    serif;

  font-size: 0.72rem;
  letter-spacing: 0.24em;

  color: #c9d3ff;
}


.novel-header__title {
  margin: 0;

  font-size:
    clamp(
      1.85rem,
      5vw,
      3rem
    );

  font-weight: 500;
  letter-spacing: 0.12em;
}


.novel-header__author {
  margin:
    18px 0
    0;

  font-size: 0.95rem;
  letter-spacing: 0.2em;

  color: #e5e8fa;
}


/* =========================================================
   上部ナビゲーション
========================================================= */

.site-nav {
  display: flex;

  justify-content: center;
  flex-wrap: wrap;

  gap: 10px;

  max-width: 900px;

  margin:
    0 auto
    26px;
}


.site-nav a {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  min-width: 110px;

  padding:
    8px
    18px;

  border:
    1px solid
    rgba(218, 225, 255, 0.65);

  border-radius: 999px;

  background:
    rgba(13, 25, 69, 0.78);

  color: #f4f6ff;

  font-size: 0.78rem;
  letter-spacing: 0.12em;

  text-decoration: none;

  box-shadow:
    0 4px 16px
    rgba(0, 0, 0, 0.25);

  transition:
    background-color 0.25s ease,
    transform 0.25s ease,
    border-color 0.25s ease;
}


.site-nav a:hover {
  background:
    rgba(50, 63, 125, 0.92);

  border-color:
    rgba(255, 255, 255, 0.9);

  transform:
    translateY(-2px);
}


/* =========================================================
   読書位置
========================================================= */

.reading-memory {
  width: min(100%, 880px);

  margin:
    0 auto
    28px;

  padding:
    17px
    20px
    13px;

  text-align: center;

  border:
    1px solid
    rgba(215, 223, 255, 0.55);

  border-radius: 10px;

  background:
    rgba(10, 22, 61, 0.80);

  box-shadow:
    0 8px 24px
    rgba(0, 0, 30, 0.25);

  backdrop-filter:
    blur(4px);
}


.reading-memory__text {
  margin:
    0 0
    12px;

  color:
    rgba(242, 245, 255, 0.92);

  font-size: 0.78rem;
  letter-spacing: 0.06em;
}


.reading-memory__buttons {
  display: flex;

  justify-content: center;
  align-items: center;
  flex-wrap: wrap;

  gap: 9px;
}


.reading-memory__button {
  appearance: none;

  border:
    1px solid
    rgba(215, 223, 255, 0.75);

  border-radius: 999px;

  background:
    rgba(35, 50, 111, 0.92);

  color: #ffffff;

  padding:
    9px
    18px;

  font-family:
    "Yu Mincho",
    "Hiragino Mincho ProN",
    "Noto Serif JP",
    serif;

  font-size: 0.78rem;
  letter-spacing: 0.05em;

  cursor: pointer;

  transition:
    background-color 0.2s ease,
    transform 0.2s ease,
    border-color 0.2s ease;
}


.reading-memory__button:hover {
  background:
    rgba(66, 82, 154, 0.98);

  border-color:
    rgba(255, 255, 255, 0.95);

  transform:
    translateY(-1px);
}


.reading-memory__button--sub {
  background:
    rgba(15, 25, 65, 0.70);

  color:
    rgba(235, 239, 255, 0.86);
}


.reading-memory__status {
  min-height: 1.3em;

  margin:
    9px 0
    0;

  color:
    rgba(229, 234, 255, 0.82);

  font-size: 0.70rem;
}


/* =========================================================
   本文用紙
========================================================= */

.novel-paper {
  position: relative;

  width: min(100%, 880px);

  margin:
    0 auto;

  padding:
    clamp(38px, 7vw, 75px)
    clamp(22px, 7vw, 85px);

  background:
    rgba(247, 248, 252, 0.97);

  border:
    1px solid
    rgba(220, 225, 241, 0.95);

  border-radius: 10px;

  box-shadow:
    0 18px 55px
    rgba(0, 0, 25, 0.52),
    inset
    0 0 40px
    rgba(120, 135, 175, 0.06);
}


.novel-paper::before {
  content: "";

  position: absolute;
  inset: 12px;

  pointer-events: none;

  border:
    1px solid
    rgba(104, 116, 158, 0.16);

  border-radius: 6px;
}


/* =========================================================
   章ヘッダー
========================================================= */

.chapter-header {
  position: relative;

  margin:
    0 auto
    50px;

  padding-bottom: 28px;

  text-align: center;
}


.chapter-header::after {
  content: "";

  display: block;

  width: 100px;
  height: 1px;

  margin:
    24px auto
    0;

  background:
    linear-gradient(
      to right,
      transparent,
      #7882ad,
      transparent
    );
}


.chapter-header__number {
  margin: 0;

  font-family:
    Georgia,
    "Times New Roman",
    serif;

  font-size: 0.7rem;
  letter-spacing: 0.28em;

  color: #69759d;
}


.chapter-header__title {
  margin:
    12px 0
    0;

  color: #252e55;

  font-size:
    clamp(
      1.65rem,
      5vw,
      2.35rem
    );

  font-weight: 500;
  letter-spacing: 0.12em;
}


.chapter-header__ornament {
  margin-top: 19px;

  color: #848eb5;

  font-size: 0.78rem;
  letter-spacing: 0.6em;
}


/* =========================================================
   ページ送り
========================================================= */

.page-nav {
  display: grid;

  grid-template-columns:
    1fr auto 1fr;

  align-items: center;

  gap: 16px;

  margin:
    0 auto
    55px;

  padding:
    15px 0;

  border-top:
    1px solid
    #d7dbea;

  border-bottom:
    1px solid
    #d7dbea;
}


.page-nav__button {
  display: inline-block;

  color: #455485;

  font-size: 0.82rem;

  text-decoration: none;

  transition:
    color 0.2s ease;
}


.page-nav__button:first-child {
  text-align: left;
}


.page-nav__button:last-child {
  text-align: right;
}


a.page-nav__button:hover {
  color: #1f2d65;
  text-decoration: underline;
}


.page-nav__button--disabled {
  opacity: 0.28;
}


.page-nav__current {
  color: #777e99;

  font-size: 0.75rem;
  letter-spacing: 0.08em;

  white-space: nowrap;
}


/* =========================================================
   本文
========================================================= */

.novel-text {
  position: relative;

  max-width: 720px;

  margin:
    0 auto;

  color: #292d3a;

  font-size:
    clamp(
      1rem,
      1.5vw,
      1.08rem
    );

  line-height: 2.15;
  letter-spacing: 0.035em;

  text-align: justify;
  text-justify: inter-ideograph;

  word-break: normal;
  overflow-wrap: anywhere;
}


.novel-text p {
  margin:
    0 0
    1.85em;
}


.novel-text p.dialogue {
  margin-bottom: 1em;
}


.scene-break {
  margin:
    50px auto;

  text-align: center;

  color: #8a93b3;

  font-size: 0.82rem;
  letter-spacing: 0.7em;
}


/* =========================================================
   挿絵
========================================================= */

.novel-illustration {
  position: relative;

  width: min(100%, 760px);

  margin:
    75px auto;

  padding:
    34px 0;

  border-top:
    1px solid
    rgba(100, 112, 160, 0.22);

  border-bottom:
    1px solid
    rgba(100, 112, 160, 0.22);

  text-align: center;
}


.novel-illustration__stars {
  margin-bottom: 22px;

  color: #8a93bb;

  font-size: 0.92rem;
}




.novel-illustration img {
  display: block;

  width: 100%;
  height: auto;

  margin: 0 auto;

  border-radius: 5px;

  box-shadow:
    0 12px 34px
    rgba(20, 24, 49, 0.25);
}




.novel-illustration figcaption {
  margin-top: 18px;
}


.novel-illustration__caption {
  display: block;

  color: #586184;

  font-size: 0.84rem;
  letter-spacing: 0.1em;
}




/* =========================================================
   章末
========================================================= */

.chapter-end {
  display: flex;

  justify-content: center;

  gap: 17px;

  margin:
    70px auto
    45px;

  color: #7c86ad;

  font-size: 0.8rem;
}


/* =========================================================
   下部ページナビ
========================================================= */

.page-nav--bottom {
  margin:
    0 auto
    40px;
}


/* =========================================================
   戻るリンク
========================================================= */

.return-links {
  display: flex;

  justify-content: center;
  flex-wrap: wrap;

  gap: 12px;

  margin-top: 45px;
}


.return-links a {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  min-width: 155px;

  padding:
    10px
    18px;

  border:
    1px solid
    #bcc4de;

  border-radius: 999px;

  background:
    #f2f4fa;

  color: #46517c;

  font-size: 0.78rem;

  text-decoration: none;

  transition:
    background-color 0.2s ease,
    transform 0.2s ease;
}


.return-links a:hover {
  background:
    #e6eafa;

  transform:
    translateY(-1px);
}


/* =========================================================
   フッター
========================================================= */

.site-footer {
  max-width: 900px;

  margin:
    35px auto
    0;

  text-align: center;

  color:
    rgba(242, 245, 255, 0.82);

  font-size: 0.72rem;
  letter-spacing: 0.09em;

  text-shadow:
    0 2px 6px
    rgba(0, 0, 0, 0.8);
}


.site-footer p {
  margin:
    5px 0;
}


/* =========================================================
   スマートフォン
========================================================= */

@media screen and (max-width: 700px) {

  body {
    background-attachment: scroll;
    background-position: center top;
  }


  .site-wrapper {
    padding:
      28px
      10px
      35px;
  }


  .novel-header {
    margin-bottom: 22px;
  }


  .novel-header__title {
    letter-spacing: 0.07em;
  }


  .reading-memory {
    margin-bottom: 20px;

    padding:
      14px
      12px
      10px;
  }


  .reading-memory__buttons {
    gap: 7px;
  }


  .reading-memory__button {
    padding:
      8px
      13px;

    font-size: 0.72rem;
  }


  .novel-paper {
    padding:
      35px
      20px
      45px;

    border-radius: 6px;
  }


  .novel-paper::before {
    inset: 7px;
  }


  .chapter-header {
    margin-bottom: 35px;
  }


  .page-nav {
    grid-template-columns:
      1fr
      1fr;

    gap: 10px;

    margin-bottom: 40px;
  }


  .page-nav__current {
    grid-column:
      1 / -1;

    grid-row: 1;

    text-align: center;
  }


  .page-nav__button:first-child {
    grid-column: 1;
    grid-row: 2;

    text-align: left;
  }


  .page-nav__button:last-child {
    grid-column: 2;
    grid-row: 2;

    text-align: right;
  }


  .novel-text {
    font-size: 1rem;

    line-height: 2.05;
    letter-spacing: 0.02em;

    text-align: left;
  }


  .novel-text p {
    margin-bottom: 1.7em;
  }


  .novel-illustration {
    width:
      calc(
        100% + 20px
      );

    margin:
      58px
      -10px;

    padding:
      27px 0;
  }


  .novel-illustration img {
    border-radius: 3px;
  }


  .return-links {
    flex-direction: column;
    align-items: stretch;
  }


  .return-links a {
    width: 100%;
  }

}


/* =========================================================
   さらに小さい画面
========================================================= */

@media screen and (max-width: 390px) {

  .novel-paper {
    padding-left: 17px;
    padding-right: 17px;
  }


  .novel-text {
    font-size: 0.97rem;
  }


  .page-nav__button {
    font-size: 0.75rem;
  }

}