.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* フィルタ */
.portfolio-filter {
  position: sticky;
  display: inline-flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
  margin: 0 0 24px;
  top: 40px;
  z-index: 6000;
}
.is-drawer-open .portfolio-filter {
  z-index: 1 !important; /* 確実にマスク/パネルより下へ */
  pointer-events: none; /* 誤クリック防止 */
}
.portfolio-filter .pf-item {
  appearance: none;
  background: none;
  border: 0;
  color: #000 !important;
  padding: 6px 0;
  cursor: pointer;
  letter-spacing: 0.08em;
}
.portfolio-filter .pf-item.is-active {
  border-bottom: 2px solid #eb5628;
  color: #eb5628 !important;
}

/* ===== Masonry グリッド ===== */
.portfolio-grid {
  margin: 0 auto;
}

/* 3カラム：横gutter=30pxが2本 → 100% - 60px の3等分 */
.grid-sizer,
.work-card {
  width: calc((100% - 60px) / 3);
}

/* 横の間隔（gutter） */
.gutter-sizer {
  width: 30px;
}

/* 縦の間隔は常に30px（列ごとに独立して積む） */
.work-card {
  margin-bottom: 30px;
  background: #fff;
  display: inline-block;
  vertical-align: top;
}

/* 2カラム */
@media (max-width: 1024px) {
  .grid-sizer,
  .work-card {
    width: calc((100% - 30px) / 2);
  } /* 30pxが1本 */
}

/* 1カラム */
@media (max-width: 640px) {
  .grid-sizer,
  .work-card {
    width: 100%;
  }
  .gutter-sizer {
    width: 0;
  }
}

/* ▼ カードのベース */
.work-link {
  display: block;
  position: relative;
  overflow: hidden;
}
.work-thumb {
  margin: 0;
} /* figure のデフォルト余白を消す */
.work-thumb img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}

/* 白いオーバーレイ（初期は透明） */
.work-link::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgba(255, 255, 255, 0);
  transition: background-color 0.35s ease;
  z-index: 1;
}

/* タイトル：画像の中央・初期は非表示 */
.work-title {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
  z-index: 2;
  color: #000;
  text-align: center;
  pointer-events: none;
}
.work-title span {
  display: inline-block;
  letter-spacing: 0.05em;
}

/* ホバー時：白オーバーレイ＋タイトル表示＋わずかにズーム */
.work-link:hover::after {
  background-color: rgba(255, 255, 255, 0.8);
}
.work-link:hover .work-title {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.work-link:hover .work-thumb img {
  transform: scale(1.04);
}

/* アニメ抑制（ユーザー設定尊重） */
@media (prefers-reduced-motion: reduce) {
  .work-thumb img,
  .work-link:hover .work-thumb img,
  .work-title {
    transition: none;
    transform: none;
  }
}

/* ====== 作品詳細レイアウト ====== */
.work-detail {
  width: 100%;
  background: #fff;
  padding-top: 210px;
}

.work-detail__inner {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 30px;
  margin: 0 auto;
  max-width: 1200px;
  width: min(92vw, 1200px);
  margin-inline: auto;
}

/* 左カラム：作品画像 */
.work-detail__image {
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 5vw, 80px);
}

.work-detail__mainimg img,
.work-detail__subimg img {
  width: 100%;
  height: auto;
  display: block;
}

/* 右カラム：固定追従 */
.work-detail__info {
  position: relative;
}

.work-detail__info-inner {
  position: sticky;
  top: clamp(120px, 10vh, 160px);
}

.work-detail__title {
  font-size: 20px;
  letter-spacing: 0.1em;
  font-weight: 700;
  margin: 0 0 16px;
}

.work-detail__desc {
  font-size: 12px;
  line-height: 2;
  color: #333;
  letter-spacing: 0.05em;
  max-width: 360px;
}

.work-detail__back {
  font-size: 13px;
  color: #eb5628;
  text-decoration: none;
  margin-top: 20px;
  transition: opacity 0.2s ease;
}
.work-detail__back:hover {
  opacity: 0.7;
}

/* スマホ：縦並び */
@media (max-width: 768px) {
  .portfolio-filter {
    gap: 12px;
    top: 18px;
  }
  .work-detail {
    padding-top: 110px;
  }
  .work-detail__inner {
    display: flex;
    flex-direction: column-reverse;
  }
  .work-detail__info-inner {
    position: static;
    max-width: 100%;
  }
  .work-detail__desc {
    max-width: 100%;
  }
}