.lightbox{
  position:fixed;
  inset:0;
  z-index:10000;
  display:none;
  place-items:center;
  background:rgba(0,0,0,.75);
  backdrop-filter: blur(6px);
  padding:24px;
}
.lightbox.open{ display:grid; }

.lb-btn{
  position:absolute;
  width:44px;
  height:44px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(18,26,42,.65);
  color:var(--text2);
  cursor:pointer;
  display:grid;
  place-items:center;
}
.lb-close{ top:18px; right:18px; font-size:18px; }
.lb-prev{ left:18px; top:50%; transform: translateY(-50%); font-size:34px; }
.lb-next{ right:18px; top:50%; transform: translateY(-50%); font-size:34px; }

.lb-center{
  width: min(980px, 92vw);
  display: grid;
  gap: 12px;
  justify-items: center;
}

.lb-topline{
  width: 100%;
  display: flex;
  justify-content: flex-end;
}

.lb-counter{
  font-size: 14px;
  color: rgba(255,255,255,.85);
  background: rgba(18,26,42,.55);
  border: 1px solid rgba(255,255,255,.12);
  padding: 8px 10px;
  border-radius: 14px;
}

/* figura - ogranicza wysokość*/
.lb-figure{
  margin: 0;
  width: 100%;
  max-height: 80vh;
  display: grid;
  gap: 10px;
  justify-items: center;

  position: relative;
  overflow: hidden; 
  border-radius: 18px;
}

#lbImg{
  max-width: 100%;
  max-height: 72vh;
  width: auto;
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 22px 60px rgba(0,0,0,.45);
}

/* podpis */
.lb-caption{
  color: rgba(255,255,255,.85);
  text-align: center;
  font-size: 14px;
}

/* miniatury */
.lb-thumbs{
  width: 100%;
  display: flex;
  gap: 10px;
  overflow: auto;
  padding: 8px 6px;
  scroll-behavior: smooth;
}

.lb-thumb{
  flex: 0 0 auto;
  width: 70px;
  height: 52px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  opacity: .65;
  cursor: pointer;
  object-fit: cover;
  transition: transform .15s ease, opacity .15s ease, filter .15s ease;
}

.lb-thumb:hover{
  opacity: .95;
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.lb-thumb.active{
  opacity: 1;
  border-color: rgba(110,231,255,.65);
  box-shadow: 0 12px 26px rgba(0,0,0,.35);
}

/* mobile */
@media (max-width: 640px){
  .lb-prev{ left: 10px; }
  .lb-next{ right: 10px; }
  .lb-close{ top: 10px; right: 10px; }
  .lb-thumb{ width: 62px; height: 46px; }
}

/* MOBILE FIX – LIGHTBOX*/
@media (max-width: 640px){

  .lightbox{
    padding: 12px;                 /* mniej */
  }

  /* środek */
  .lb-center{
    width: 96vw;
    gap: 10px;
  }

  /* obraz ma się zmieścić */
  #lbImg{
    max-height: 62vh;              /* mniejsze niż desktop */
    border-radius: 14px;
  }

  /* przyciski na górze, nie na środku (żeby nie zasłaniały zdjęcia) */
  .lb-prev,
  .lb-next{
    top: 14px;
    transform: none;
    width: 42px;
    height: 42px;
    font-size: 28px;
  }

  .lb-prev{ left: 12px; }
  .lb-next{ right: 12px; }

  .lb-close{
    top: 14px;
    right: 12px;
    width: 42px;
    height: 42px;
  }

  .lb-thumb{
    width: 58px;
    height: 44px;
  }

  .lb-thumbs{
    padding: 6px 4px;
    gap: 8px;
  }

  .lb-counter{
    font-size: 13px;
    padding: 6px 8px;
  }
}

/* bardzo małe telefony */
@media (max-width: 380px){
  #lbImg{ max-height: 56vh; }
  .lb-prev, .lb-next, .lb-close{
    width: 40px; height: 40px;
  }
}

/* MOBILE – ROZDZIELENIE PRZYCISKÓW*/
@media (max-width: 640px){

  /* X zawsze w prawym górnym rogu */
  .lb-close{
    top: 12px;
    right: 12px;
    left: auto;
    z-index: 2;
  }

  /* strzałki po LEWEJ stronie */
  .lb-prev{
    top: 12px;
    left: 12px;
    right: auto;
    transform: none;
  }

  .lb-next{
    top: 12px;
    left: 64px;      
    right: auto;
    transform: none;
  }
}


/* LIGHTBOX – SYMETRIA MARGINESÓW (MOBILE) */
@media (max-width: 640px){

  .lb-center{
    width: 100%;
    max-width: 96vw;
    padding: 0 12px; 
    box-sizing: border-box;
  }

  .lb-topline{
    padding-right: 8px;
  }

  #lbImg{
    max-width: 100%;
    margin: 0 auto;
    display: block;
  }

  .lb-caption{
    padding: 0 8px;
    text-align: center;
  }
}