/* =========================================================
   Renewal: knowledge（知見）一覧・カテゴリ一覧・詳細
   ========================================================= */

/* ---------- 注目の知見（Figma: 492:3468） ----------
   PC: padding 90px 120px、見出し→カード 50px、カード 390px×3 / gap 15px */
.r-knowledge-featured {
  position: relative;
  padding-block: 56px;
  color: var(--r-color-white);
  background-color: #4a0000; /* 画像未配置時のフォールバック */
  background-image: url("../img/knowledge-pickup-bg.webp");
  background-size: cover;
  background-position: center;
}
@media (min-width: 768px) {
  .r-knowledge-featured {
    padding-block: 90px;
  }
}

.r-knowledge-featured__inner {
  width: 100%;
  max-width: calc(var(--r-inner) + var(--r-side-pad) * 2);
  margin-inline: auto;
  padding-inline: var(--r-side-pad);
}

/* 見出し（Figma 654:5729）
   共通の .r-sec-head をベースに、中央揃え・白文字・◆なしにする */
.r-knowledge-featured__head {
  align-items: center;
  text-align: center;
}
.r-knowledge-featured__head .r-sec-head__title {
  color: rgba(255, 255, 255, 0.5); /* Figma SP 654:6982 */
}
@media (min-width: 768px) {
  .r-knowledge-featured__head .r-sec-head__title {
    color: var(--r-color-white);
  }
}
.r-knowledge-featured__head .r-sec-head__label {
  /* ◆ 用の padding-left の分だけ左に戻し、和文そのものを中央に揃える */
  margin-left: -15px;
  font-weight: 500; /* Figma: 和文は Medium */
  color: var(--r-color-white);
}
@media (min-width: 768px) {
  .r-knowledge-featured__head .r-sec-head__label {
    margin-left: -37px;
  }
}
/* ◆ も白に（PC 側の既定はアクセント色） */
.r-knowledge-featured__head .r-sec-head__label::before {
  background-color: var(--r-color-white);
}

/* カード（SP: 横スライダー / PC: 3 カラム） */
.r-knowledge-featured__slider {
  margin-top: 32px; /* Figma SP: 和文 79 → カード 138 */
  /* SP は右端を画面幅いっぱいまで伸ばして次のカードを覗かせる */
  margin-right: calc(var(--r-side-pad) * -1);
  overflow: hidden;
}
.r-knowledge-featured__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.r-knowledge-featured__list > .r-knowledge-card {
  width: 280px;
  height: auto;
}
/* ページネーション（Figma SP: 6px ドット ×3、カード下 8px） */
.r-knowledge-featured__dots {
  position: static;
  display: flex;
  justify-content: center;
  gap: 2px;
  margin-top: 28px;
}
.r-knowledge-featured__dots .swiper-pagination-bullet {
  width: 6px;
  height: 6px;
  margin: 0;
  background: var(--r-color-white);
  opacity: 0.4;
  transition: opacity 0.3s;
}
.r-knowledge-featured__dots .swiper-pagination-bullet-active {
  opacity: 1;
}
@media (min-width: 768px) {
  .r-knowledge-featured__slider {
    margin-top: 50px;
    margin-right: 0;
    overflow: visible;
  }
  .r-knowledge-featured__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }
  .r-knowledge-featured__list > .r-knowledge-card {
    width: auto;
  }
  .r-knowledge-featured__dots {
    display: none;
  }
}

/* ---------- フェーズから探す / 記事を探す（Figma: 492:3429） ----------
   bg #EFEFEF、padding 100px、ボタン 294×80 ×4列、gap 横8 / 縦10 */
.r-knowledge-finder {
  padding-block: 56px;
  background: #efefef;
  color: #222;
}
@media (min-width: 768px) {
  .r-knowledge-finder {
    padding-block: 100px;
  }
}

/* Figma 654:5783: 英字タイトル＋◆ラベルの共通見出し（.r-sec-head）を使う */
.r-knowledge-finder__heading {
  margin-bottom: 20px;
}
@media (min-width: 768px) {
  .r-knowledge-finder__heading {
    margin-bottom: 32px;
  }
}
/* 「記事を探す」は英字タイトル未支給のため従来の見出しのまま */
.r-knowledge-finder__heading--plain {
  font-family: var(--r-ff-base);
  font-size: 22px;
  font-weight: 700;
  line-height: normal;
}
@media (min-width: 768px) {
  .r-knowledge-finder__heading--plain {
    font-size: 30px;
  }
}
.r-knowledge-finder__heading + .r-knowledge-search {
  margin-top: -8px; /* 見出し→検索ボックスは 20px */
}

/* カテゴリボタン */
.r-phase-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: 1fr; /* ラベルが 2 行になる行に他の行も揃え、全ボタンを同じ高さに */
  gap: 8px;
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
}
/* li をセル高いっぱいに使い、リンクを伸ばす */
.r-phase-nav__item {
  display: grid;
}
@media (min-width: 768px) {
  .r-phase-nav {
    grid-template-columns: repeat(4, 1fr);
    gap: 10px 8px;
    margin-bottom: 50px;
  }
}

.r-phase-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 8px 32px 8px 16px;
  border: 1px solid var(--r-color-sub);
  border-radius: 3px;
  background: var(--r-color-sub);
  color: var(--r-color-white);
  font-family: var(--r-ff-base);
  font-size: 12px;
  font-weight: 700;
  line-height: normal;
  text-decoration: none;
  transition: opacity 0.3s;
}
@media (min-width: 768px) {
  .r-phase-nav__link {
    gap: 14px;
    min-height: 80px;
    padding: 8px 40px 8px 27px;
    font-size: 18px;
  }
}
.r-phase-nav__link:hover {
  opacity: 0.8;
}
/* 反転するのは現在表示中のカテゴリのみ（「すべての記事」も同様） */
.r-phase-nav__link[aria-current="page"] {
  background: var(--r-color-white);
  color: var(--r-color-sub);
}
/* 「すべての記事」は番号・矢印がないので中央寄せ */
.r-phase-nav__link.is-all {
  justify-content: center;
  padding-inline: 16px;
}

.r-phase-nav__num {
  flex-shrink: 0;
  font-family: var(--r-ff-en);
  font-size: 26px;
  font-weight: 500;
  line-height: 1;
}
@media (min-width: 768px) {
  .r-phase-nav__num {
    font-size: 35px;
  }
}

.r-phase-nav__label {
  flex: 1 1 auto;
}

/* 右端矢印: cat-btn-arrow.svg（7×12）を mask で描画し、色は文字色に追従
   （現在カテゴリ＝白地のときは #3A0000 になる） */
.r-phase-nav__arrow {
  position: absolute;
  top: 50%;
  right: 16px;
  width: 7px;
  height: 12px;
  background-color: currentColor;
  -webkit-mask: url("../img/cat-btn-arrow.svg") no-repeat center / contain;
  mask: url("../img/cat-btn-arrow.svg") no-repeat center / contain;
  transform: translateY(-50%);
}
@media (min-width: 768px) {
  .r-phase-nav__arrow {
    right: 24px;
  }
}

/* 検索ボックス 1199×80 */
.r-knowledge-search {
  position: relative;
  display: flex;
  align-items: center;
  height: 64px;
  border: 1px solid var(--r-color-sub);
  border-radius: 3px;
  background: var(--r-color-white);
}
@media (min-width: 768px) {
  .r-knowledge-search {
    height: 80px;
  }
}
.r-knowledge-search__input {
  flex: 1 1 auto;
  min-width: 0;
  height: 100%;
  padding: 0 16px;
  border: 0;
  background: transparent;
  font-family: var(--r-ff-base);
  font-size: 16px;
  color: #222;
  outline: none;
  appearance: none;
}
@media (min-width: 768px) {
  .r-knowledge-search__input {
    padding: 0 24px;
  }
}
.r-knowledge-search__input::-webkit-search-decoration,
.r-knowledge-search__input::-webkit-search-cancel-button {
  appearance: none;
}
.r-knowledge-search__submit {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-right: 16px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
@media (min-width: 768px) {
  .r-knowledge-search__submit {
    margin-right: 24px;
  }
}
.r-knowledge-search__icon {
  display: block;
  width: 34px;
  height: 34px;
}

/* 知見カード（.r-knowledge-card）の CSS は TOP でも使うため base.css に移動 */

/* ---------- 記事一覧（Figma: 524:2772） ----------
   3列 gap 15 / 行間 120 / 上 90 / 下 50 */
.r-knowledge-list {
  padding-block: 56px 40px;
  background: var(--r-color-white);
}
@media (min-width: 768px) {
  .r-knowledge-list {
    padding-block: 90px 50px;
  }
}

.r-knowledge-list__result {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
}

.r-knowledge-list__grid {
  display: grid;
  gap: 40px;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 768px) {
  .r-knowledge-list__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 120px 15px;
  }
}

.r-knowledge-list__empty {
  text-align: center;
}

/* ページネーション（仮） */
.r-knowledge-list .r-pagination {
  margin-top: 64px;
}
.r-knowledge-list .nav-links {
  display: flex;
  justify-content: center;
  gap: 8px;
}
.r-knowledge-list .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding-inline: 8px;
  border: 1px solid var(--r-color-sub);
  color: var(--r-color-sub);
  text-decoration: none;
}
.r-knowledge-list .page-numbers.current {
  background: var(--r-color-sub);
  color: var(--r-color-white);
}

/* ---------- 詳細 ---------- */
.r-knowledge-single__inner {
  max-width: 880px;
  padding-block: 40px 80px;
}
.r-knowledge-single__cats {
  display: flex;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin-bottom: 12px;
}
.r-knowledge-single__cat a {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--r-color-bg);
  border-radius: 4px;
  color: inherit;
  text-decoration: none;
}
.r-knowledge-single__title {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.5;
}
.r-knowledge-single__date {
  display: block;
  margin-top: 8px;
  font-size: 0.875rem;
  color: #888;
}
.r-knowledge-single__thumb {
  margin-block: 32px;
}
.r-knowledge-single__thumb img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.r-knowledge-single__nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 64px;
}
.r-knowledge-single__nav-link {
  color: inherit;
}