/* =========================================================
   PODGLĄD ZDJĘCIA
   Natywny <dialog> — pułapka fokusa, Esc i tło dostajemy
   od przeglądarki, bez biblioteki i bez własnego trapu.
   ========================================================= */
.kg-lightbox {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: hidden;
  color: var(--on-dark-1);
}

.kg-lightbox::backdrop {
  background: rgba(15, 21, 30, .93);
  backdrop-filter: blur(6px);
}

.kg-lightbox__inner {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: clamp(56px, 8vw, 96px) clamp(16px, 8vw, 104px);
}

.kg-lightbox__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  max-height: 100%;
  animation: kg-lightbox-in .34s cubic-bezier(.16,.9,.3,1) both;
}

@keyframes kg-lightbox-in {
  from { opacity: 0; transform: scale(.975) translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.kg-lightbox__img {
  max-width: 100%;
  max-height: calc(100dvh - clamp(180px, 22vh, 240px));
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
  transition: opacity .2s ease;
}
.kg-lightbox.is-loading .kg-lightbox__img { opacity: .25; }

/* Skan dokumentu czyta się w pionie — dostaje maksymalną wysokość
   okna i węższe marginesy, żeby dało się przeczytać treść pisma. */
.kg-lightbox.is-doc .kg-lightbox__inner { padding: clamp(56px, 6vw, 80px) clamp(12px, 6vw, 96px); }
.kg-lightbox.is-doc .kg-lightbox__img {
  /* Skany referencji mają w pliku 300×390 px. Rozciągamy je na całą
     dostępną wysokość, bo w natywnym rozmiarze dokument jest zupełnie
     nieczytelny; ostrości to nie przywróci — potrzebne są lepsze skany. */
  height: min(calc(100dvh - clamp(150px, 18vh, 200px)), 860px);
  width: auto;
  max-width: 100%;
  object-fit: contain;
  background: #fff;
}

.kg-lightbox__caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  text-align: center;
}

.kg-lightbox__label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--on-dark-1);
}

.kg-lightbox__cat {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .04em;
  color: rgba(237,227,214,.72);
  border-bottom: 1px solid rgba(237,227,214,.35);
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}
.kg-lightbox__cat:hover { color: var(--on-dark-1); border-color: var(--color-gold); }

/* ── Przyciski ── */
.kg-lightbox__btn {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(237,227,214,.06);
  border: 1px solid rgba(237,227,214,.20);
  color: var(--on-dark-1);
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s;
}
.kg-lightbox__btn:hover {
  background: rgba(237,227,214,.14);
  border-color: rgba(237,227,214,.45);
}
.kg-lightbox__btn[hidden] { display: none; }

.kg-lightbox__btn--close { top: clamp(12px, 3vw, 28px); right: clamp(12px, 3vw, 28px); }
.kg-lightbox__btn--prev  { top: 50%; left: clamp(8px, 2vw, 28px);  transform: translateY(-50%); }
.kg-lightbox__btn--next  { top: 50%; right: clamp(8px, 2vw, 28px); transform: translateY(-50%); }
.kg-lightbox__btn--prev:hover { transform: translateY(-50%) translateX(-3px); }
.kg-lightbox__btn--next:hover { transform: translateY(-50%) translateX(3px); }

.kg-lightbox__counter {
  position: absolute;
  left: 50%;
  bottom: clamp(14px, 3vw, 28px);
  transform: translateX(-50%);
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  font-variant-numeric: tabular-nums;
  color: rgba(237,227,214,.60);   /* 5.4:1 na tle podglądu */
}

.kg-lightbox :focus-visible {
  outline: 2px solid var(--on-dark-1);
  outline-offset: 3px;
}

/* Na wąskim ekranie strzałki schodzą na dół, żeby nie zasłaniały zdjęcia */
@media (max-width: 620px) {
  .kg-lightbox__inner { padding: 64px 12px 108px; }
  .kg-lightbox__img { max-height: calc(100dvh - 210px); }
  .kg-lightbox__btn { width: 44px; height: 44px; }
  .kg-lightbox__btn--prev { top: auto; bottom: 14px; left: 22%; transform: none; }
  .kg-lightbox__btn--next { top: auto; bottom: 14px; right: 22%; transform: none; }
  .kg-lightbox__btn--prev:hover,
  .kg-lightbox__btn--next:hover { transform: none; }
  .kg-lightbox__counter { bottom: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  .kg-lightbox__figure { animation: none; }
}