/* ============================================
   MENHIR – efekt jaskini (warstwa 3 briefu)
   Osobna warstwa: bez js/cave.js sekcja #cave
   pozostaje pusta i ukryta (display:none).
   ============================================ */

.cave { display: none; }

.cave.cave--active {
  display: block;
  position: relative;
  height: 560vh;
  background: #0c0b09;
}

.cave-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: linear-gradient(#1F1D1A 0%, #12100e 45%, #0c0b09 100%);
}

/* światło dnia u wejścia */
.cave-light-top {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 65% at 50% -12%, rgba(245, 241, 234, 0.55), transparent 62%);
  pointer-events: none;
}

/* złota poświata przy wyjściu na dole */
.cave-light-bottom {
  position: absolute;
  inset: 0;
  background: radial-gradient(130% 75% at 50% 112%, rgba(201, 168, 87, 0.5), transparent 65%);
  opacity: 0;
  pointer-events: none;
}

/* ściany – trzy warstwy parallaksy */
.cave-layer {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 260%;
  will-change: transform;
  pointer-events: none;
}

.cave-layer svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* drobinki pyłu */
.cave-dust {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cave-dust span {
  position: absolute;
  bottom: -4vh;
  border-radius: 50%;
  background: rgba(201, 168, 87, 0.32);
  animation: caveDust linear infinite;
}

@keyframes caveDust {
  from { transform: translateY(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  to   { transform: translateY(-115vh); opacity: 0; }
}

/* napisy wejścia / wyjścia */
.cave-intro,
.cave-outro {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: min(85vw, 560px);
  pointer-events: none;
}

.cave-intro .label,
.cave-outro .label { color: var(--gold-light); }

.cave-intro h2,
.cave-outro h2 {
  color: #F5F1EA;
  font-size: clamp(26px, 4.5vw, 40px);
  margin-top: 16px;
}

.cave-intro .arrow {
  margin-top: 28px;
  color: var(--gold-light);
  font-size: 22px;
  animation: caveArrow 1.8s ease-in-out infinite;
}

@keyframes caveArrow {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50%      { transform: translateY(10px); opacity: 1; }
}

.cave-outro { opacity: 0; }

/* kamienie na głębokościach */
.cave-stone {
  position: absolute;
  left: 50%;
  top: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  opacity: 0;
  will-change: transform, opacity;
  pointer-events: none;
}

.cave-stone .stone {
  width: min(38vw, 180px);
  box-shadow:
    inset -12px -14px 28px rgba(0, 0, 0, 0.25),
    inset 10px 12px 24px rgba(255, 255, 255, 0.28),
    0 0 70px 10px rgba(201, 168, 87, 0.2);
}

.cave-stone-label { text-align: center; }

.cave-stone-label .label { color: var(--gold-light); }

.cave-stone-label h3 {
  color: #F5F1EA;
  font-size: clamp(24px, 4vw, 34px);
  margin-top: 8px;
  font-weight: 400;
}

/* licznik głębokości */
.cave-depth {
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(201, 168, 87, 0.55);
  pointer-events: none;
}

/* skrót do sklepu – zawsze widoczny w jaskini */
.cave-skip {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #8A8578;
  border-bottom: 1px solid rgba(138, 133, 120, 0.4);
  padding-bottom: 3px;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

.cave-skip:hover {
  color: var(--gold-light);
  border-color: var(--gold-light);
}

/* nagłówek przyciemniany na czas pobytu w jaskini (klasa z js/cave.js) */
.site-header {
  transition: background 0.4s ease, border-color 0.4s ease;
}

.site-header--dark {
  background: rgba(18, 16, 14, 0.88);
  border-bottom-color: #2a2722;
}

.site-header--dark .logo { color: #F5F1EA; }
.site-header--dark .main-nav a { color: #B8B2A4; }
.site-header--dark .main-nav a:hover { color: #F5F1EA; }
.site-header--dark .nav-toggle { color: #F5F1EA; }

.site-header--dark .btn--solid {
  background: var(--gold-light);
  border-color: var(--gold-light);
  color: #1F1D1A;
}

@media (max-width: 640px) {
  .cave.cave--active { height: 430vh; }
  .cave-depth { right: 14px; }
}

/* przy preferencji ograniczonego ruchu jaskinia się nie uruchamia (js),
   ale na wszelki wypadek wyłączamy też animacje CSS */
@media (prefers-reduced-motion: reduce) {
  .cave-dust span, .cave-intro .arrow { animation: none; }
}