/* =========================================================
   TAŚMA — poziomy pas przewijanych kart

   Natywny scroll + scroll-snap: na telefonie działa palcem bez
   ani jednej linii JavaScriptu, a mysz/trackpad/klawiatura
   dostają wsparcie ze skryptu (strzałki, pasek postępu, drag).
   ========================================================= */
.kg-rail {
  --rail-gap: 3px;
  position: relative;
}

.kg-rail__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  overscroll-behavior-x: contain;
  /* pasek chowamy, bo mamy własny wskaźnik postępu */
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.kg-rail__viewport::-webkit-scrollbar { display: none; }
.kg-rail__viewport:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 4px; }

.kg-rail__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--rail-gap);
  width: max-content;
  min-width: 100%;
}

.kg-rail__item {
  scroll-snap-align: start;
  flex: 0 0 auto;
  margin: 0;
}

/* Wcięcie równe marginesowi kontenera, żeby pierwsza karta
   stała w linii z nagłówkiem, a taśma i tak dobiegała do krawędzi ekranu. */
.kg-rail--bleed .kg-rail__viewport {
  scroll-padding-left: max(var(--container-pad), (100vw - var(--container-width)) / 2 + var(--container-pad));
}
.kg-rail--bleed .kg-rail__track {
  padding-left: max(var(--container-pad), (100vw - var(--container-width)) / 2 + var(--container-pad));
  padding-right: max(var(--container-pad), (100vw - var(--container-width)) / 2 + var(--container-pad));
}

.kg-rail__viewport.is-dragging { scroll-behavior: auto; cursor: grabbing; }
.kg-rail__viewport.is-dragging a { pointer-events: none; }

/* ── Sterowanie ── */
.kg-rail__controls {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}
.kg-rail__controls[hidden] { display: none; }

.kg-rail__progress {
  position: relative;
  flex: 1;
  height: 1px;
  background: var(--color-border);
  overflow: visible;
}

.kg-rail__bar {
  position: absolute;
  top: -1px;
  left: 0;
  height: 3px;
  background: var(--ink-1);
  transition: transform .18s ease-out;
  transform-origin: left center;
}

.kg-rail__buttons { display: flex; gap: var(--space-sm); flex-shrink: 0; }

.kg-rail__btn {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border-strong);
  color: var(--ink-2);
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s, opacity .2s;
}
.kg-rail__btn:hover:not(:disabled) {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--on-dark-1);
}
.kg-rail__btn:disabled { opacity: .3; cursor: default; }

/* Podpowiedź dla myszy — na dotyku i tak wszyscy wiedzą, że się przesuwa */
.kg-rail__hint {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  flex-shrink: 0;
}

@media (max-width: 700px) {
  .kg-rail__hint { display: none; }
  .kg-rail__controls { gap: var(--space-md); margin-top: var(--space-md); }
  .kg-rail__btn { width: 40px; height: 40px; }
}

@media (hover: none) {
  /* Na dotyku strzałki są zbędne — palec wystarcza */
  .kg-rail__buttons { display: none; }
}