/* ============================================
   MARCA D'ÁGUA SAGRADA — Sistema Dinâmico
   Camadas:
   1) Marca Exu fixa (assentamento) — fundo permanente
   2) Marca d'água dinâmica — troca a cada 30s
   ============================================ */

/* IMPORTANTE: Para z-index:-1 funcionar, o body precisa ser transparente.
   O JS transfere automaticamente o background original do body para o html. */

/* Camada 1 — Marca Exu fixa (sempre presente, ao fundo) */
#marca-exu-fixa {
  position: fixed;
  bottom: -110px;
  right: -110px;
  width: 420px;
  height: 420px;
  background-image: url('medias/sagrado/imagensreais/assentamento%20de%20exu.jpg');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border-radius: 50%;
  filter: grayscale(60%) sepia(15%) contrast(105%);
  opacity: 0.10;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
  z-index: -2;
  animation: pulsar-exu 9s ease-in-out infinite;
}

@keyframes pulsar-exu {
  0%, 100% { opacity: 0.09; transform: scale(1); }
  50%      { opacity: 0.13; transform: scale(1.04); }
}

/* Camada 2 — Marca d'água dinâmica (troca a cada 30s) */
#marcadagua-dinamica {
  position: fixed;
  width: 32vw;
  height: 32vw;
  max-width: 420px;
  max-height: 420px;
  min-width: 220px;
  min-height: 220px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  filter: grayscale(100%);
  opacity: 0;
  pointer-events: none;
  user-select: none;
  z-index: -1;
  transition: opacity 1.6s ease-in-out,
              top      1.6s ease-in-out,
              left     1.6s ease-in-out;
  will-change: opacity, top, left, background-image;

  /* Remove o quadrado — dissolve as bordas em vinheta circular */
  border-radius: 50%;
  -webkit-mask-image: radial-gradient(
    ellipse 70% 70% at center,
    black 35%,
    rgba(0,0,0,0.6) 55%,
    transparent 75%
  );
  mask-image: radial-gradient(
    ellipse 70% 70% at center,
    black 35%,
    rgba(0,0,0,0.6) 55%,
    transparent 75%
  );
}

/* Responsivo — mobile */
@media (max-width: 768px) {
  #marcadagua-dinamica {
    width: 55vw;
    height: 55vw;
    min-width: 180px;
    min-height: 180px;
  }
  #marca-exu-fixa {
    width: 300px;
    height: 300px;
    bottom: -80px;
    right: -80px;
  }
}

/* Acessibilidade — respeita preferência de redução de movimento */
@media (prefers-reduced-motion: reduce) {
  #marca-exu-fixa { animation: none; }
  #marcadagua-dinamica { transition: opacity 0.6s ease; }
}

/* ============================================
   Camada exclusiva da PRIMEIRA PÁGINA (index.html)
   Assentamento de Exu como marca d'água de fundo,
   centralizada, com cores originais (sem grayscale).
   ============================================ */
#marca-exu-fundo {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70vw;
  height: 70vw;
  max-width: 720px;
  max-height: 720px;
  background-image: url('medias/sagrado/imagensreais/assentamento%20de%20exu.jpg');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.20;
  pointer-events: none;
  user-select: none;
  z-index: -3;             /* fica atrás de tudo, inclusive da Exu fixa */
  will-change: opacity;
  /* sem filtro — mantém imagem original */
}

/* Tablet */
@media (max-width: 1024px) {
  #marca-exu-fundo {
    width: 80vw;
    height: 80vw;
    opacity: 0.18;
  }
}

/* Mobile */
@media (max-width: 600px) {
  #marca-exu-fundo {
    width: 95vw;
    height: 95vw;
    max-width: 500px;
    max-height: 500px;
    opacity: 0.16;
  }
}

/* Tela muito pequena (celulares antigos) */
@media (max-width: 360px) {
  #marca-exu-fundo {
    width: 100vw;
    height: 100vw;
    opacity: 0.14;
  }
}