/* =========================================
   Gallery Page – gallery.css
   ========================================= */

.gallery-page{
  padding: 60px 0 80px;
}

.gallery-page__intro{
  max-width: 620px;
  margin: 0 auto 40px;
  text-align: center;
  font-size: 15px;
  color: var(--c-muted);
  line-height: 2;
}

/* =========================================
   Filter Buttons
   ========================================= */

.gallery-filters{
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.gallery-filter-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
  padding: 10px 24px;
  border-radius: 999px;
  border: 1px solid var(--c-blue);
  background: transparent;
  color: var(--c-blue);
  font-family: var(--ff-sans);
  font-size: 14px;
  cursor: pointer;
  transition: background .16s, color .16s;
  text-decoration: none;
  font-weight: 500;
}

.gallery-filter-btn:hover,
.gallery-filter-btn.is-active{
  background: var(--c-blue);
  color: #fff;
  text-decoration: none;
}

/* =========================================
   Category sections
   ========================================= */

.gallery-cat-section{
  margin-bottom: 72px;
}

.gallery-cat-section[data-cat] {
  transition: opacity .3s;
}

.gallery-cat-section.is-hidden{
  display: none;
}

.gallery-cat-title{
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--ff-serif);
  font-size: 20px;
  color: var(--c-text);
  margin: 0 0 24px;
}

.gallery-cat-title__en{
  font-family: var(--ff-en);
  font-size: 12px;
  color: var(--c-blue);
  letter-spacing: 0.15em;
}

/* =========================================
   Photo Grid
   ========================================= */

.gallery-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.gallery-grid__item{
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 8px;
  display: block;
  position: relative;
  background: var(--c-sky-50);
}

.gallery-grid__item img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .3s ease;
}

.gallery-grid__item:hover img{
  transform: scale(1.05);
}

/* 拡大アイコン（ホバー時） */
.gallery-grid__item::after{
  content: "🔍";
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  background: rgba(255,255,255,.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  opacity: 0;
  transition: opacity .2s;
}

.gallery-grid__item:hover::after{
  opacity: 1;
}

/* もっと見るボタン */
.gallery-more{
  text-align: center;
  margin-top: 8px;
}

.gallery-more-btn{
  /* uses .btn .btn-ghost */
}

/* =========================================
   Lightbox（基本モーダル）
   ========================================= */

.gallery-lightbox{
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.gallery-lightbox.is-open{
  display: flex;
}

.gallery-lightbox__img{
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}

.gallery-lightbox__close{
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50%;
  cursor: pointer;
  color: #fff;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* =========================================
   Responsive (SP)
   ========================================= */

@media (max-width: 767px){
  .gallery-page{ padding: 40px 0 60px; }
  .gallery-grid{ grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .gallery-filter-btn{ min-width: 90px; padding: 8px 16px; font-size: 13px; }
  .gallery-filters{ gap: 8px; }
}