/* =================================================
   IMAGE SLIDER GRID + LIGHTBOX KHỞI MỘC
   Class dùng: image-slider image-slider-g-1 đến image-slider-g-5
================================================= */

/* Grid ảnh */
.image-slider{
  --km-img-cols:3;
  --km-img-gap:14px;

  display:grid;
  grid-template-columns:repeat(var(--km-img-cols), minmax(0, 1fr));
  gap:var(--km-img-gap);
  margin:22px 0;
}

.image-slider-g-1{--km-img-cols:1}
.image-slider-g-2{--km-img-cols:2}
.image-slider-g-3{--km-img-cols:3}
.image-slider-g-4{--km-img-cols:4}
.image-slider-g-5{--km-img-cols:5}

.image-slider img{
  width:100%;
  aspect-ratio:4/2.67;
  object-fit:cover;
  object-position:center;
  display:block;

  border-radius:10px;
  background:#f2f4f7;
  border:1px solid #e6e9ef;
  box-shadow:0 3px 12px rgba(16,24,40,.08);

  cursor:pointer;
  transition:
    transform .25s ease,
    box-shadow .25s ease,
    filter .25s ease,
    border-color .25s ease;
}

.image-slider img:hover{
  transform:translateY(-3px);
  filter:brightness(.94);
  border-color:#d7dce5;
  box-shadow:0 12px 26px rgba(16,24,40,.16);
}

/* Nếu muốn ảnh không bị cắt, thêm class image-slider-contain */
.image-slider.image-slider-contain img{
  object-fit:contain;
  background:#f8fafc;
}

/* Nếu muốn ảnh vuông */
.image-slider.image-slider-square img{
  aspect-ratio:1/1;
}

/* Responsive */
@media(max-width:991px){
  .image-slider-g-4,
  .image-slider-g-5{
    --km-img-cols:3;
  }

  .image-slider-g-3{
    --km-img-cols:2;
  }
}

@media(max-width:575px){
  .image-slider{
    --km-img-gap:10px;
    margin:18px 0;
  }

  .image-slider-g-2,
  .image-slider-g-3,
  .image-slider-g-4,
  .image-slider-g-5{
    --km-img-cols:2;
  }

  .image-slider img{
    border-radius:8px;
  }
}

@media(max-width:380px){
  .image-slider-g-2,
  .image-slider-g-3,
  .image-slider-g-4,
  .image-slider-g-5{
    --km-img-cols:1;
  }
}


/* =================================================
   LIGHTBOX
================================================= */

body.km-lightbox-lock{
  overflow:hidden;
}

.km-lightbox{
  position:fixed;
  inset:0;
  z-index:99999;

  display:none;
  align-items:center;
  justify-content:center;

  background:rgba(12,18,28,.88);
  backdrop-filter:blur(6px);
  padding:24px;
}

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

.km-lightbox-inner{
  position:relative;
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
}

.km-lightbox-img{
  max-width:min(1100px, 92vw);
  max-height:82vh;
  width:auto;
  height:auto;
  object-fit:contain;

  border-radius:10px;
  background:#fff;
  box-shadow:0 24px 80px rgba(0,0,0,.45);
}

.km-lightbox-caption{
  position:absolute;
  left:50%;
  bottom:22px;
  transform:translateX(-50%);

  max-width:min(900px, 86vw);
  padding:9px 14px;

  color:#fff;
  font-size:14px;
  line-height:1.45;
  text-align:center;

  background:rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.16);
  border-radius:999px;
}

.km-lightbox-counter{
  position:absolute;
  left:22px;
  top:22px;

  color:#fff;
  font-size:13px;
  font-weight:600;

  padding:7px 11px;
  border-radius:999px;
  background:rgba(0,0,0,.42);
  border:1px solid rgba(255,255,255,.16);
}

.km-lightbox-close,
.km-lightbox-prev,
.km-lightbox-next{
  position:absolute;
  z-index:2;

  display:flex;
  align-items:center;
  justify-content:center;

  border:0;
  outline:0;
  cursor:pointer;

  color:#fff;
  background:rgba(0,0,0,.42);
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px rgba(0,0,0,.24);

  transition:background .2s ease, transform .2s ease;
}

.km-lightbox-close:hover,
.km-lightbox-prev:hover,
.km-lightbox-next:hover{
  background:#d73027;
  transform:scale(1.06);
}

.km-lightbox-close{
  top:20px;
  right:22px;
  width:42px;
  height:42px;
  border-radius:50%;
  font-size:26px;
  line-height:1;
}

.km-lightbox-prev,
.km-lightbox-next{
  top:50%;
  transform:translateY(-50%);
  width:46px;
  height:58px;
  border-radius:12px;
  font-size:34px;
  line-height:1;
}

.km-lightbox-prev:hover,
.km-lightbox-next:hover{
  transform:translateY(-50%) scale(1.06);
}

.km-lightbox-prev{
  left:22px;
}

.km-lightbox-next{
  right:22px;
}

@media(max-width:575px){
  .km-lightbox{
    padding:12px;
  }

  .km-lightbox-img{
    max-width:94vw;
    max-height:76vh;
    border-radius:8px;
  }

  .km-lightbox-close{
    top:12px;
    right:12px;
    width:38px;
    height:38px;
  }

  .km-lightbox-prev,
  .km-lightbox-next{
    width:38px;
    height:50px;
    font-size:28px;
  }

  .km-lightbox-prev{
    left:10px;
  }

  .km-lightbox-next{
    right:10px;
  }

  .km-lightbox-caption{
    bottom:14px;
    font-size:12px;
    border-radius:10px;
  }

  .km-lightbox-counter{
    top:12px;
    left:12px;
  }
}