/*
 * 事例紹介 (case_study) アーカイブ & 詳細用スタイル
 * CPTページは tokens.css を別途読み込まず、@import もキャッシュ結合で
 * 効かないことがあるため、使用するデザイントークンを下記 :root で自己完結定義する。
 * (これがないと .is-active/hover のフィルタ赤背景が消え「すべて」等が白文字で不可視になる)
 * 適用範囲: /preview/cases/, /preview/cases/<slug>/
 */
:root {
  --color-brand-primary: #e73227;
  --color-text-base: #191919;
  --color-text-muted: #707070;
  --color-surface-base: #ffffff;
  --color-surface-alt: #f7f7f7;
  --color-border-base: #d9d9d9;
  --font-family-en: "Roboto", sans-serif;
}

/* ============================================================ */
/* 一覧ページ /cases/                                            */
/* ============================================================ */
.p-cases {
  padding: 80px 0 100px;
}

.p-cases__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  justify-content: center;
  list-style: none;
  padding: 0;
  margin: 0 0 48px;
}

.p-cases__filter-item a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-text-base);
  background: var(--color-surface-alt, #f4f5f8);
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.p-cases__filter-item a:hover,
.p-cases__filter-item.is-active a {
  background: var(--color-brand-primary);
  color: var(--color-surface-base, #fff);
}

.p-cases__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 28px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.p-cases__list-item {
  margin: 0;
}

.p-cases__card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--color-surface-base, #fff);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.p-cases__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.p-cases__card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface-alt, #f4f5f8);
}

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

.p-cases__card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 22px 26px;
}

.p-cases__card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.p-cases__card-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-brand-primary);
  background: rgba(231, 50, 39, 0.08);
  border-radius: 999px;
  line-height: 1.5;
}

.p-cases__card-tag--scale {
  color: var(--color-text-muted, #555);
  background: var(--color-surface-alt, #f4f5f8);
}

.p-cases__card-title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 12px;
  color: var(--color-text-base);
}

.p-cases__card-result {
  font-size: 1.4rem;
  line-height: 1.7;
  margin: 0 0 18px;
  color: var(--color-text-muted, #555);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.p-cases__card-more {
  margin-top: auto;
  font-size: 1.3rem;
}

.p-cases__empty {
  text-align: center;
  padding: 60px 0;
  color: var(--color-text-muted, #555);
}

/* ============================================================ */
/* 詳細ページ /cases/<slug>/                                    */
/* ============================================================ */
.p-case-detail {
  padding: 80px 0 100px;
}

.p-case-detail__header {
  text-align: center;
  margin-bottom: 40px;
}

.p-case-detail__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 18px;
}

.p-case-detail__tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--color-brand-primary);
  background: rgba(231, 50, 39, 0.08);
  border-radius: 999px;
}

.p-case-detail__tag--scale {
  color: var(--color-text-muted, #555);
  background: var(--color-surface-alt, #f4f5f8);
}

.p-case-detail__title {
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 12px;
  color: var(--color-text-base);
}

.p-case-detail__client {
  font-size: 1.5rem;
  color: var(--color-text-muted, #555);
  margin: 0;
}

.p-case-detail__image {
  margin: 40px auto 48px;
  max-width: 960px;
}

.p-case-detail__image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.p-case-detail__result-box {
  position: relative;
  max-width: 880px;
  margin: 0 auto 56px;
  padding: 32px 40px;
  background: var(--color-surface-alt, #f4f5f8);
  border-left: 4px solid var(--color-brand-primary);
  border-radius: 4px;
}

.p-case-detail__result-label {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-brand-primary);
  margin-bottom: 10px;
}

.p-case-detail__result-text {
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.7;
  margin: 0;
  color: var(--color-text-base);
}

.p-case-detail__sections {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.p-case-detail__section-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0 0 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-base, #e5e5e8);
}

.p-case-detail__section-title-en {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-brand-primary);
  text-transform: uppercase;
}

.p-case-detail__section-title-jp {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-text-base);
}

.p-case-detail__section-body {
  font-size: 1.6rem;
  line-height: 1.9;
  color: var(--color-text-base);
}

.p-case-detail__section-body p {
  margin: 0 0 1em;
}

.p-case-detail__section-body p:last-child {
  margin-bottom: 0;
}

.p-case-detail__related-service {
  max-width: 880px;
  margin: 64px auto 0;
  padding: 28px 32px;
  background: var(--color-surface-base, #fff);
  border: 1px solid var(--color-border-base, #e5e5e8);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.p-case-detail__related-service-label {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text-muted, #555);
}

.p-case-detail__related-service-link {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  gap: 4px;
}

.p-case-detail__related-service-en {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--color-brand-primary);
  letter-spacing: 0.08em;
}

.p-case-detail__related-service-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text-base);
}

.p-case-detail__related-service-link:hover .p-case-detail__related-service-title {
  text-decoration: underline;
}

.p-case-detail__back {
  text-align: center;
  margin-top: 56px;
}

/* ============================================================ */
/* 関連事例 (single 下部)                                       */
/* ============================================================ */
.p-cases-related {
  padding: 80px 0 100px;
  background: var(--color-surface-alt, #f4f5f8);
}

.p-cases-related .p-cases__list {
  grid-template-columns: repeat(3, 1fr);
}

/* ============================================================ */
/* レスポンシブ                                                   */
/* ============================================================ */
@media screen and (max-width: 1024px) {
  .p-cases__list,
  .p-cases-related .p-cases__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 20px;
  }
}

@media screen and (max-width: 768px) {
  .p-cases {
    padding: 50px 0 70px;
  }

  .p-case-detail {
    padding: 50px 0 70px;
  }

  .p-case-detail__title {
    font-size: 2.4rem;
  }

  .p-case-detail__result-box {
    padding: 22px 24px;
  }

  .p-case-detail__result-text {
    font-size: 1.6rem;
  }

  .p-case-detail__sections {
    gap: 40px;
  }

  .p-case-detail__section-title-jp {
    font-size: 2rem;
  }
}

@media screen and (max-width: 600px) {
  .p-cases__list,
  .p-cases-related .p-cases__list {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .p-cases__filter {
    gap: 6px 8px;
    margin-bottom: 32px;
  }

  .p-cases__filter-item a {
    padding: 6px 14px;
    font-size: 1.3rem;
  }
}