@charset "UTF-8";
/* Case Studies セクション */
.case-studies-slider {
  padding: 100px 0 160px 0;
  background: #FAF5F1;
  overflow: hidden;
}
.case-studies-slider .container {
  position: relative;
}

/* コンテナにマスク用の設定 */
/* タブナビゲーション */
.case-studies-nav {
  background: #FFFFFF;
  border-radius: 12px;
  padding: 20px 30px;
  display: flex;
  gap: 25px;
  margin: 0 0 90px;
  width: fit-content;
}

.case-studies-nav__item {
  padding: 10px 0 0 0;
  background: transparent;
  border: none;
  border-top: 2px solid #8C8CA0;
  color: #77798F;
  font-size: 16px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-radius: 0;
}
.case-studies-nav__item::before {
  content: "";
  display: inline-block;
  width: 13px;
  height: 7px;
  background-image: url("../images/common/arr_under.svg");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  transition: all 0.3s ease;
  position: absolute;
  left: 0;
}
.case-studies-nav__item span {
  padding-left: 23px;
}
.case-studies-nav__item.active, .case-studies-nav__item:hover {
  border-top-color: #E62327;
  color: #E62327;
}
.case-studies-nav__item.active::before, .case-studies-nav__item:hover::before {
  background-image: url("../images/common/arr_under_hover.svg");
}

/* ヘッダー部分 */
.case-studies__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 60px;
  margin-left: auto;
  margin-right: auto;
}

.case-studies__title-wrap {
  display: flex;
  align-items: baseline;
  gap: 20px;
}
.case-studies__title-wrap.block {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.case-studies__title-en {
  font-size: 56px;
  font-weight: 500;
  color: #E62327;
  font-family: "Nunito Sans", sans-serif;
  margin: 0;
}

.case-studies__title-ja {
  font-weight: 500;
}

.case-studies__subtitle {
  background: #CC1F22;
  color: #FFFFFF;
  padding: 8px 10px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
  position: relative;
  z-index: 1;
  display: block;
  width: fit-content;
  margin-bottom: 50px;
}

.case-studies__more-btn {
  display: inline-flex;
  align-items: center;
  background: #E62327;
  color: #FFFFFF;
  padding: 12px 36px;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding-right: 50px;
}
.case-studies__more-btn::after {
  content: "";
  position: absolute;
  right: 20px;
  width: 7px;
  height: 18px;
  background-image: url("../images/common/arr_w.svg");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}
.case-studies__more-btn:hover {
  background: #CC1F22;
  transform: translateX(5px);
}

/* スライダー */
.case-studies__slider {
  position: relative;
}

/* スライダーの背景矩形 */
.swiper.case-studies__slider::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  height: 100%;
  background: #FAF5F1;
  transform: translate(-100%, -50%);
  z-index: 1;
  width: 100%;
}

/* カード */
.case-study-card {
  position: relative;
  height: 470px;
  width: 100%;
  overflow: hidden;
  transition: none;
  cursor: pointer;
}

.case-study-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  flex: 1;
}

.case-study-card:hover .case-study-card__image {
  transform: scale(1.05);
}

/* オーバーレイ */
.case-study-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px;
  background: linear-gradient(to top, #E62327 0%, rgba(230, 35, 39, 0.7) 30%, rgba(255, 255, 255, 0) 100%);
  color: #FFFFFF;
}

.case-study-card__location {
  position: absolute;
  top: 28px;
  left: 28px;
  font-size: 14px;
  color: #FFFFFF;
  z-index: 10;
}

.case-study-card__title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 25px;
}

/* タグ */
.case-study-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.case-study-card__tag {
  display: inline-block;
  padding: 4px 20px;
  background: transparent;
  color: #fff;
  line-height: 1;
  border: 1px solid #fff;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

/* Swiper スライダーのカスタマイズ */
.swiper {
  position: relative;
  overflow: visible;
}

.swiper-wrapper {
  display: flex;
  align-items: stretch;
}

.swiper-slide {
  width: calc(25% - 4px) !important;
  opacity: 0.85;
  transition: none;
  position: relative;
  overflow: visible;
}
.swiper-slide.is-rightmost {
  width: calc(50% - 4px) !important;
  opacity: 1;
}
.swiper-slide.is-rightmost .case-study-card {
  width: 100%;
  position: relative;
  z-index: 10;
}
.swiper-slide + .swiper-slide.is-rightmost {
  margin-left: 0;
}

/* 右端の前のスライドの位置調整 */
.is-rightmost .case-study-card__overlay {
  padding: 28px;
}
.is-rightmost .case-study-card__title {
  font-size: 18px;
}

/* 矢印 */
.swiper-button-prev, .swiper-button-next {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.swiper-button-prev:hover, .swiper-button-next:hover {
  background: #F5F5F5;
}

.swiper-button-prev {
  left: -25px;
}

.swiper-button-next {
  right: -25px;
}

.swiper-button-prev:after {
  content: "";
  position: absolute;
  width: 7px;
  height: 18px;
  background-image: url("../images/common/arr_r.svg");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.swiper-button-next:after {
  content: "";
  position: absolute;
  width: 7px;
  height: 18px;
  background-image: url("../images/common/arr_r.svg");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transform: translate(-50%, -50%) rotate(180deg);
}

.swiper {
  z-index: 2;
}

/* レスポンシブ */
@media (max-width: 1024px) {
  .case-studies__title-en {
    font-size: 48px;
  }
  .case-studies__title-ja {
    font-size: 20px;
  }
  .case-study-card {
    height: 350px;
  }
}
@media (max-width: 768px) {
  .case-studies-slider .container::before {
    display: none;
  }
  .case-studies__title-ja {
    font-size: 14px;
  }
  .case-studies-slider {
    padding: 60px 0;
  }
  .case-studies__subtitle {
    padding: 6px 8px;
    margin-top: 0;
    font-size: 14px;
  }
  .case-studies__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    align-items: start;
    gap: 0;
  }
  .case-studies__title-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    width: 50%;
  }
  .case-studies__more-btn {
    font-size: 14px;
    padding: 10px 30px;
    padding-right: 45px;
  }
  .case-studies__more-btn::after {
    right: 18px;
    width: 6px;
    height: 16px;
  }
  /* スライドを1つずつ表示 */
  .swiper-slide {
    width: calc(100vw - 60px) !important;
    opacity: 1;
  }
  .swiper-slide.is-rightmost {
    width: 100% !important;
  }
  .swiper-slide.is-rightmost .case-study-card {
    height: auto;
  }
  /* ナビゲーションボタンの位置調整 */
  .swiper-button-prev {
    left: -20px;
  }
  .swiper-button-next {
    right: -6px;
  }
  .swiper-button-prev, .swiper-button-next {
    width: 40px;
    height: 40px;
  }
  .case-studies__title-en {
    font-size: 48px;
    line-height: 1.25;
  }
  .case-study-card {
    height: 300px;
  }
  .case-study-card__overlay {
    padding: 20px;
  }
  /* タブナビゲーション */
  .case-studies-nav {
    border-radius: 6px;
    padding: 20px;
    gap: 15px;
    display: block;
    margin: 0 0 60px;
    width: 100%;
  }
  .case-studies-nav__item {
    font-size: 12px;
    margin-bottom: 20px;
    width: 100%;
    border-width: 1px;
  }
  .case-studies-nav__item:last-child {
    margin-bottom: 0;
  }
}
@media (max-width: 480px) {
  .case-studies__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
  .case-studies__title-en {
    font-size: 28px;
  }
  .case-studies__subtitle {
    font-size: 12px;
  }
  .case-studies__more-btn {
    font-size: 12px;
    padding: 8px 25px;
    padding-right: 40px;
  }
  .case-studies__more-btn::after {
    right: 15px;
    width: 5px;
    height: 14px;
  }
}