@charset "UTF-8";

/* ============================================================
 * 記事詳細（お知らせ／コラム）
 * ============================================================ */
.single_layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 255px;
  gap: 20px;
  align-items: stretch;
}

/* ============================================================
 * 左：本文
 * ============================================================ */
.single_main {
  background-color: var(--white);
  border-radius: 12px;
  padding: 40px 44px;
  box-shadow: 0 5px 0 rgba(0, 0, 0, 0.08);
  border: solid 4px var(--main);
}

.single_meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.single_title {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.5;
  padding-bottom: 20px;
  margin-bottom: 32px;
  border-bottom: 1px solid #E3E3E3;
}

.single_cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 9999px;
  background-color: var(--cat-color, var(--main));
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
}

.single_date {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cat-color, var(--main));
}

/* ===== 本文 ===== */
.single_body {
  font-size: 1rem;
  line-height: 1.95;
}

.single_body p {
  margin-bottom: 1.6em;
}

.single_body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 2em 0 0.9em;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--cat-color, var(--main));
}

.single_body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 1.8em 0 0.7em;
  padding-left: 14px;
  border-left: 5px solid var(--cat-color, var(--main));
}

.single_body h4 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 1.6em 0 0.6em;
}

.single_body ul,
.single_body ol {
  margin: 0 0 1.6em;
  padding-left: 1.6em;
}

.single_body ul { list-style: disc; }
.single_body ol { list-style: decimal; }

.single_body li {
  margin-bottom: 0.4em;
  line-height: 1.8;
}

.single_body li::marker {
  color: var(--cat-color, var(--main));
}

.single_body a {
  color: var(--cat-color, var(--main));
  text-decoration: underline;
}

.single_body strong {
  font-weight: 700;
}

.single_body blockquote {
  margin: 1.6em 0;
  padding: 14px 20px;
  background-color: var(--green-pale);
  border-left: 4px solid var(--cat-color, var(--main));
  border-radius: 4px;
}

.single_body img {
  display: block;
  width: 85%;
  height: auto;
  margin: 0 auto 20px;
  border-radius: 8px;
}

.single_tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #E3E3E3;
}

.single_tags li {
  font-size: 0.8rem;
  color: #87878E;
}

/* ============================================================
 * ボタン
 * ============================================================ */
.single_back {
  margin-top: 48px;
  text-align: center;
}

.single_btn--back,
.single_btn--prev {
  padding: 13px 24px 13px 14px;
}

/* 戻る／前へは左向き（次へは common の ＞ を継承） */
.single_btn--back .arrow::before,
.single_btn--prev .arrow::before { content: "\FF1C"; }

/* ===== 前後の記事 ===== */
.single_pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.single_pager_card {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--black);
}

.single_pager_card:hover {
  opacity: 1;
}

.single_pager_slot--next .single_pager_card {
  justify-content: flex-end;
  text-align: right;
}

.single_pager_info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  min-width: 0;
}

.single_pager_slot--next .single_pager_info {
  align-items: flex-end;
}

.single_pager_title {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--green-pale);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.single_pager_card:hover .single_pager_title {
  background-color: var(--main);
  color: var(--white);
}

.single_pager .calendar_cta_btn {
  gap: 8px;
  min-width: auto;
  padding: 8px 12px;
  font-size: 0.78rem;
  box-shadow: 0 4px 0 var(--main-color);
}

.single_pager .single_btn--prev { padding: 8px 14px 8px 12px; }

.single_pager .calendar_cta_btn .arrow {
  width: 16px;
  height: 16px;
}

.single_pager_card:hover .calendar_cta_btn {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--main-color);
}

/* ============================================================
 * 右：その他の記事（追従サイドバー）
 * ============================================================ */
.single_side {
  
}

.single_side_sticky {
  position: sticky;
  top: 100px;
  background-color: var(--white);
  border-radius: 12px;
  padding: 24px 20px;
  box-shadow: 0 5px 0 rgba(0, 0, 0, 0.08);
  border: solid 4px var(--main);
}

.single_side_head {
  line-height: 1.1;
  margin-bottom: 20px;
}

.single_side_head .en {
  display: block;
  font-family: "Atma", cursive;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--main);
}

.single_side_head .jp {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
}

.single_side_list {
  display: flex;
  flex-direction: column;
}

.single_side_item {
  border-bottom: 1px solid #E3E3E3;
}

.single_side_item:first-child {
  padding-top: 0;
}

.single_side_item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.single_side_link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--black);
}

.single_side_link:hover {
  opacity: 1;
}

.single_side_thumb {
  flex-shrink: 0;
  width: 76px;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--white);
}

.single_side_thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.single_side_text {
  min-width: 0;
}

.single_side_date {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cat-color, var(--main));
}

.single_side_title {
  display: -webkit-box;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.5;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.3s ease;
}

.single_side_link:hover .single_side_title {
  color: var(--cat-color, var(--main));
}

/* ============================================================
 * アイキャッチ無し（カテゴリ色のロゴ）
 * ============================================================ */
.thumb_noimg {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--cat-color, var(--main));
  -webkit-mask: url("../img/logo.svg") no-repeat center / 50%;
  mask: url("../img/logo.svg") no-repeat center / 50%;
}

/* ============================================================
 * レスポンシブ
 * ============================================================ */
@media screen and (max-width: 900px) {
  .single_layout {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .single_side_sticky {
    position: static;
  }
}

@media screen and (max-width: 600px) {
  .single_pager {
    grid-template-columns: 1fr;
  }

  .single_body img {
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  .single_main {
    padding: 32px 20px;
  }

  .single_title {
    font-size: 1.3rem;
  }

  .single_body p {
    line-height: 1.6;
  }

  .single_side_head .en {
    font-size: 2rem;
  }

  .single_body h2 {
    font-size: 1.3rem;
  }
}