/* Camada de imersão do Guia Dandan */

:root {
  --immersive-ease: cubic-bezier(0.16, 0.8, 0.24, 1);
  --immersive-ease-soft: cubic-bezier(0.22, 0.61, 0.36, 1);
}

section[id] {
  scroll-margin-top: 104px;
}

/* Abertura breve, exibida apenas uma vez por sessão. */
#immersive-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #172019;
  transition: opacity 0.48s var(--immersive-ease), visibility 0.48s var(--immersive-ease);
}

#immersive-loader.is-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.immersive-loader-word {
  color: #eef1e8;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1rem, 3vw, 1.7rem);
  text-transform: uppercase;
  letter-spacing: 0.35em;
  opacity: 0;
  animation: immersive-loader-word 0.72s var(--immersive-ease-soft) forwards 0.06s;
}

.immersive-loader-bar {
  position: absolute;
  bottom: 14%;
  left: 50%;
  width: min(210px, 58vw);
  height: 1px;
  overflow: hidden;
  transform: translateX(-50%);
  background: rgba(238, 241, 232, 0.25);
}

.immersive-loader-bar span {
  position: absolute;
  inset: 0;
  background: #d5e56f;
  transform-origin: left;
  animation: immersive-loader-bar 0.68s var(--immersive-ease-soft) forwards 0.04s;
}

@keyframes immersive-loader-word {
  from { opacity: 0; letter-spacing: 0.55em; }
  to { opacity: 1; letter-spacing: 0.35em; }
}

@keyframes immersive-loader-bar {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* Textura discreta somente em telas com mais espaço e potência. */
#immersive-grain {
  position: fixed;
  inset: 0;
  z-index: 60;
  opacity: 0.03;
  pointer-events: none;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* O cabeçalho agora acompanha a navegação e reaparece ao subir. */
.site-header {
  position: fixed;
  transition: transform 0.42s var(--immersive-ease), background-color 0.42s ease, box-shadow 0.42s ease, padding 0.35s ease;
  will-change: transform;
}

.site-header.is-scrolled {
  background-color: rgba(23, 32, 25, 0.78);
  box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.68);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

.site-header.is-hidden {
  transform: translateY(-110%);
}

/* Revelações leves, sem interferir nas animações nativas das grandes cenas. */
[data-immersive-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.88s var(--immersive-ease), transform 0.96s var(--immersive-ease);
  will-change: opacity, transform;
}

[data-immersive-reveal="scale"] {
  transform: translateY(16px) scale(0.975);
}

[data-immersive-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-immersive-group] > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.76s var(--immersive-ease), transform 0.86s var(--immersive-ease);
}

[data-immersive-group].is-visible > * {
  opacity: 1;
  transform: none;
}

[data-immersive-group].is-visible > *:nth-child(1) { transition-delay: 0.02s; }
[data-immersive-group].is-visible > *:nth-child(2) { transition-delay: 0.07s; }
[data-immersive-group].is-visible > *:nth-child(3) { transition-delay: 0.12s; }
[data-immersive-group].is-visible > *:nth-child(4) { transition-delay: 0.17s; }
[data-immersive-group].is-visible > *:nth-child(5) { transition-delay: 0.22s; }
[data-immersive-group].is-visible > *:nth-child(n + 6) { transition-delay: 0.26s; }

@media (min-width: 901px) {
  .hero-image {
    animation: immersive-ken-burns 22s ease-in-out infinite alternate;
  }

  .story-background,
  .sunrise-main-image,
  .sensory-break > img {
    will-change: transform;
  }
}

@keyframes immersive-ken-burns {
  from { transform: scale(1.06) translateY(0); }
  to { transform: scale(1.14) translateY(-1.5%); }
}

/* Elevação e aproximação ficam restritas a dispositivos com mouse. */
@media (hover: hover) and (pointer: fine) {
  .route-card,
  .step-card,
  .info-card,
  .gallery-item,
  .video-card {
    transition: transform 0.55s var(--immersive-ease), box-shadow 0.55s var(--immersive-ease);
  }

  .route-card:hover,
  .step-card:hover,
  .info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px -30px rgba(23, 32, 25, 0.45);
  }

  .gallery-item img,
  .video-card img {
    transition: transform 0.92s var(--immersive-ease);
  }

  .gallery-item:hover img,
  .video-card:hover img {
    transform: scale(1.075);
  }
}

.button-primary,
.button-ghost,
.button-dark,
.button-sunrise,
.header-cta {
  position: relative;
  transition: transform 0.3s var(--immersive-ease-soft), box-shadow 0.3s ease;
}

.button-primary:hover,
.header-cta:hover,
.button-dark:hover,
.button-sunrise:hover {
  box-shadow: 0 16px 34px -14px rgba(213, 229, 111, 0.55);
}

.floating-whatsapp {
  transition: transform 0.36s var(--immersive-ease-soft), box-shadow 0.36s ease;
}

.floating-whatsapp:hover {
  transform: translateY(-4px) scale(1.03);
}

.faq-list details p {
  animation: immersive-faq-open 0.42s var(--immersive-ease-soft);
}

@keyframes immersive-faq-open {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Galeria em tela cheia, incluindo as onze fotos do Cânion do Cipó. */
.immersive-zoomable {
  cursor: zoom-in;
}

.immersive-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6vh 4vw;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  background: rgba(10, 14, 10, 0.95);
  transition: opacity 0.38s var(--immersive-ease), visibility 0.38s var(--immersive-ease);
}

.immersive-lightbox.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.immersive-lightbox-frame {
  position: relative;
  width: min(1200px, 92vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  outline: none;
}

.immersive-lightbox img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 76vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.72);
  opacity: 0;
  transform: scale(0.975);
  transition: opacity 0.32s var(--immersive-ease), transform 0.32s var(--immersive-ease);
}

.immersive-lightbox img.is-loaded {
  opacity: 1;
  transform: scale(1);
}

.immersive-lightbox-caption {
  max-width: min(760px, 82vw);
  margin: 0;
  color: #eef1e8;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  line-height: 1.45;
  text-align: center;
  opacity: 0.86;
}

.immersive-lightbox-close,
.immersive-lightbox-prev,
.immersive-lightbox-next {
  position: absolute;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(238, 241, 232, 0.28);
  border-radius: 999px;
  background: rgba(238, 241, 232, 0.1);
  color: #eef1e8;
  cursor: pointer;
  font-size: 1.05rem;
  transition: background-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.immersive-lightbox-close:hover,
.immersive-lightbox-prev:hover,
.immersive-lightbox-next:hover {
  background: #d5e56f;
  color: #172019;
}

.immersive-lightbox-close:focus-visible,
.immersive-lightbox-prev:focus-visible,
.immersive-lightbox-next:focus-visible,
.immersive-zoomable:focus-visible {
  outline: 3px solid #d5e56f;
  outline-offset: 4px;
}

.immersive-lightbox-close { top: -2vh; right: 0; }
.immersive-lightbox-prev { top: 50%; left: -3vw; transform: translateY(-50%); }
.immersive-lightbox-next { top: 50%; right: -3vw; transform: translateY(-50%); }

.immersive-cta-glow {
  position: fixed;
  z-index: 9997;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(213, 229, 111, 0.34), transparent 70%);
  transition: opacity 0.25s ease;
  will-change: transform;
}

.immersive-cta-glow.is-active { opacity: 1; }

@media (max-width: 900px) {
  #immersive-grain,
  .immersive-cta-glow {
    display: none;
  }

  .hero-image {
    animation: none !important;
  }

  [data-immersive-reveal],
  [data-immersive-group] > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 780px) {
  section[id] { scroll-margin-top: 82px; }

  .immersive-lightbox {
    padding: 14px;
  }

  .immersive-lightbox-frame {
    width: 100%;
    max-height: 94vh;
  }

  .immersive-lightbox img {
    max-height: 78vh;
  }

  .immersive-lightbox-close { top: 8px; right: 8px; }
  .immersive-lightbox-prev { left: 8px; }
  .immersive-lightbox-next { right: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  #immersive-loader,
  [data-immersive-reveal],
  [data-immersive-group] > *,
  .hero-image,
  .site-header,
  .immersive-lightbox img {
    animation: none !important;
    transition: none !important;
  }

  [data-immersive-reveal],
  [data-immersive-group] > * {
    opacity: 1 !important;
    transform: none !important;
  }
}