/* ===================================================
  front-page.css
  - トップページ専用スタイル（モバイルファースト）
=================================================== */

/* --- hero --- */
.hero {
  position: relative;
  min-height: 420px;
  padding: 32px 20px 56px;
  background: var(--color-white);
}

.hero__img-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

/* 背景の青い菱形。45度回転した正方形の上端は top -(√2-1)/2×辺長 の位置に来るため、
   その分だけtopを下げ、ヒーロー上辺（＝ヘッダー下端）より上にはみ出さないようにする */
.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  --diamond: 120vw;
  width: var(--diamond);
  height: var(--diamond);
  background: var(--color-bg-blue);
  left: -60vw;
  top: calc(var(--diamond) * 0.2072);
  transform: rotate(45deg);
}

.hero__box {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 38%;
  z-index: 0;
  border-radius: 20px;
  background: #fdfaf5;
}

/* max-widthのリセット上書きが必要。width:130%を有効にする */
.hero__img {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: 0;
  display: block;
  width: 130%;
  max-width: none;
  height: auto;
  transform: translateX(-50%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
}

.hero__text {
  position: relative;
}

.hero__catch {
  width: auto;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.5;
  white-space: normal;
  color: var(--color-main);
}

.hero__lead {
  display: none;
}

/* --- 新着情報ティッカー（SPはヒーローの下、PCはヒーロー内に重ねる） --- */
/* z-index: ヒーロー画像（z-index:1）より前面に出す */
.hero-ticker {
  /* 文字が流れる速さ（px/秒）。JSが所要時間の算出に読み取る */
  --ticker-speed: 25;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: -24px 20px 0;
  padding: 12px 18px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.hero-ticker__label {
  flex-shrink: 0;
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--color-main);
}

/* 記事を重ねて配置し、アクティブな1件のみ表示 */
.hero-ticker__list {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 1.8em;
}

.hero-ticker__item {
  position: absolute;
  inset: 0;
  visibility: hidden;
}

.hero-ticker__item.is-active {
  visibility: visible;
}

.hero-ticker__item a {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
}

/* SPは表示エリアが狭いため日付は出さない */
.hero-ticker__date {
  display: none;
  flex-shrink: 0;
  font-family: var(--font-en);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--color-gray);
}

/* タイトルを右から左へ流す窓 */
.hero-ticker__track {
  position: relative;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  height: 100%;
}

.hero-ticker__title {
  position: absolute;
  top: 50%;
  left: 0;
  white-space: nowrap;
  font-size: 1.3rem;
  line-height: 1;
  transform: translate(100%, -50%);
}

/* アニメーションはJSが animation ショートハンドで直接設定する
   （所要時間を本文の実測幅から算出するため） */
@keyframes heroTickerFlow {
  from { transform: translate(100%, -50%); }
  to   { transform: translate(-100%, -50%); }
}

/* 視差軽減時はJSがティッカーを起動しないので、1件目を静止表示にする */
@media (prefers-reduced-motion: reduce) {
  .hero-ticker__title {
    position: static;
    transform: none;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* --- section inner --- */
.service__inner,
.works__inner,
.news__inner {
  padding-top: 56px;
  padding-bottom: 56px;
}

/* --- service --- */
.service__title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
}

/* font-sizeはbody(14px)から継承 */
.service__text {
  margin-top: 16px;
  line-height: 1.9;
}

.service .btn-link {
  margin-top: 24px;
}

.diagonal-wrap {
  position: relative;
}

/* --- works --- */
/* font-sizeはbody(14px)から継承 */
.works__lead {
  line-height: 1.9;
}

.works__head-btn {
  display: none;
}

.works__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 16px;
  margin-top: 40px;
}

.works__item {
  position: relative;
}

.works__card {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-white);
  border: 8px solid var(--color-works-border);
  border-radius: 16px;
  padding: 20px;
}

.works__card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.works .btn-link {
  margin-top: 32px;
}

/* --- factory --- */
.factory {
  padding-right: 16px;
}

.factory img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 0 20px 20px 0;
}

/* --- news --- */
.news {
  position: relative;
  z-index: 1;
  margin: -40px 16px 0 16px;
  background: var(--color-white);
  border-radius: 20px 0 0 0;
}

.news__inner {
  max-width: none;
  margin: 0;
  padding-top: 40px;
  padding-right: 20px;
  padding-left: 20px;
  padding-bottom: 56px;
}

.news__head-btn {
  display: none;
}

.news__bottom-btn {
  margin-top: 24px;
}

.news__list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news__item a {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 16px 56px 16px 20px;
  overflow: hidden;
  background: var(--color-bg-blue);
  border-radius: 15px;
  transition: box-shadow 0.3s var(--ease);
}

.news__item a::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--color-main);
  opacity: 0.06;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s var(--ease);
}

.news__date,
.news__cat,
.news__title {
  position: relative;
  z-index: 1;
}

.news__date {
  font-size: 1.2rem;
  color: #6b7785;
}

.news__cat {
  padding: 2px 12px;
  font-size: 1.3rem;
  color: var(--color-main);
  background: var(--color-white);
  border-radius: 999px;
}

/* 1行で収まらない場合は末尾を省略 */
.news__title {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news__arrow.btn-link__icon {
  position: absolute;
  top: 50%;
  right: 16px;
  z-index: 1;
  transform: translateY(-50%);
}

/* CTA styles → common.css へ移管 */

/* ===================================================
  PC（768px以上）
=================================================== */
@media (min-width: 768px) {
  .hero {
    min-height: 640px;
    padding: 0;
    overflow: visible;
  }

  /* 大画面では菱形の最大サイズを制限（topはSPと同じ計算式で追従する） */
  .hero::before {
    --diamond: min(120vw, 1680px);
    left: max(-840px, -60vw);
  }

  .factory {
    padding-right: var(--pc-side);
  }

  .factory img {
    height: 360px;
    border-radius: 0 28px 28px 0;
  }

  .news {
    margin: -28px var(--pc-side) 0 0;
    border-radius: 28px 0 0 0;
  }

  .hero__box {
    left: calc(var(--pc-side) + 320px);
    right: 0;
    border-radius: 32px 0 0 32px;
  }

  /* 画面幅が狭まっても縮みすぎないよう、vwの半分ペースで縮小
     （1300px→850px / 1440px→920px が基準） */
  .hero__img {
    left: auto;
    right: 0;
    bottom: auto;
    top: 20px;
    width: clamp(560px, calc(50vw + 200px), 1040px);
    max-width: none;
    transform: none;
  }

  .hero__inner {
    max-width: var(--width-outer);
    height: 640px;
    margin: 0 auto;
    padding: 100px var(--container-pad) 0;
    display: flex;
    align-items: flex-start;
  }

  .hero__text {
    max-width: calc(var(--catch-size) * 12.7);
  }

  .hero__catch {
    font-size: var(--catch-size);
  }

  .hero__lead {
    display: block;
    margin-top: 28px;
    font-size: 1.8rem;
    line-height: 1.8;
  }

  /* PCはヒーロー内に重ね、テキスト左端に揃える */
  .hero-area {
    position: relative;
    /* キャッチの文字サイズ。テキスト幅・ティッカー幅もこれに連動させ、
       どの画面幅でも「鉄は、未だ見ぬ「欲しい」」の12文字で改行される */
    --catch-size: min(4.4rem, 3.4vw);
  }

  .hero-ticker {
    --ticker-speed: 45;
    position: absolute;
    left: var(--pc-side);
    bottom: 140px;
    z-index: 3;
    width: calc(var(--catch-size) * 12.7);
    margin: 0;
    gap: 18px;
    padding: 14px 24px;
    border-color: transparent;
    box-shadow: 0 4px 24px rgba(11, 92, 171, 0.12);
  }

  .hero-ticker__label {
    font-size: 1.7rem;
  }

  .hero-ticker__date {
    display: block;
    font-size: 1.3rem;
  }

  .hero-ticker__title {
    font-size: 1.4rem;
  }

  .service__inner,
  .works__inner,
  .news__inner {
    padding: 88px var(--container-pad);
  }

  .section-head {
    text-align: left;
    margin-bottom: 32px;
  }

  .service__title {
    font-size: 3.2rem;
  }

  .service__text {
    margin-top: 20px;
    max-width: 720px;
  }

  .works__inner {
    display: flex;
    align-items: flex-start;
    gap: 48px;
  }

  .works__head {
    flex: 0 0 400px;
  }

  .works__lead {
    max-width: 360px;
  }

  .works__head-btn {
    display: inline-flex;
    margin-top: 32px;
  }

  .works__bottom-btn {
    display: none;
  }

  .works__list {
    flex: 0 1 640px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 24px;
    margin-top: 0;
  }

  /* PCはcard内画像を80%程度に縮小 */
  .works__card img {
    width: 80%;
    height: 80%;
  }

  .news__inner {
    display: flex;
    align-items: flex-start;
    gap: 48px;
    padding-left: 100px;
    padding-right: 0;
  }

  .news__head {
    flex: 0 0 240px;
    padding: 0;
  }

  .news__head-btn {
    display: inline-flex;
    margin-top: 32px;
  }

  .news__bottom-btn {
    display: none;
  }

  .news__list {
    flex: 1;
    margin-top: 0;
  }

  .news__item a {
    padding: 20px 56px 20px 28px;
    border-radius: 999px;
  }

  .news__title {
    width: auto;
    flex: 1;
    min-width: 0;
  }

  /* CTA PC styles → common.css */
}