/* ============================================================
   SADION — animations.css
   Revelação por scroll, parallax, keyframes e reduced-motion
   ============================================================ */

/* ---------- Revelação por scroll ----------
   O JS adiciona .in-view quando o elemento entra na viewport.
   data-reveal aceita: up | left | right | zoom | flip           */
[data-reveal] {
  opacity: 0;
  transition:
    opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

[data-reveal="up"] { transform: translateY(42px); }
[data-reveal="left"] { transform: translateX(-46px); }
[data-reveal="right"] { transform: translateX(46px); }
[data-reveal="zoom"] { transform: scale(0.88); }
[data-reveal="flip"] { transform: perspective(900px) rotateX(14deg) translateY(36px); }

[data-reveal].in-view {
  opacity: 1;
  transform: none;
}

/* Escalonamento automático de filhos (data-stagger no pai) */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-stagger].in-view > * {
  opacity: 1;
  transform: none;
}

[data-stagger].in-view > :nth-child(1) { transition-delay: 0.05s; }
[data-stagger].in-view > :nth-child(2) { transition-delay: 0.15s; }
[data-stagger].in-view > :nth-child(3) { transition-delay: 0.25s; }
[data-stagger].in-view > :nth-child(4) { transition-delay: 0.35s; }
[data-stagger].in-view > :nth-child(5) { transition-delay: 0.45s; }
[data-stagger].in-view > :nth-child(6) { transition-delay: 0.55s; }
[data-stagger].in-view > :nth-child(7) { transition-delay: 0.65s; }
[data-stagger].in-view > :nth-child(8) { transition-delay: 0.75s; }

/* ---------- Parallax ----------
   data-parallax="0.2" → o JS move o elemento em translate3d
   proporcional ao scroll. Apenas transform, sem reflow.        */
[data-parallax] { will-change: transform; }

/* ---------- Barra de progresso de leitura ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 130;
  width: 100%;
  height: 2px;
  transform-origin: left;
  transform: scaleX(0);
  background: var(--gold-grad-flat);
  pointer-events: none;
}

/* ---------- Keyframes ---------- */
@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes btn-sheen {
  0%, 55% { transform: translateX(-120%); }
  75%, 100% { transform: translateX(120%); }
}

@keyframes grad-slide {
  to { background-position: 200% center; }
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  70%, 100% { transform: scale(1.35); opacity: 0; }
}

@keyframes scroll-drip {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Spinner do botão de envio */
.btn .btn__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(26, 9, 64, 0.25);
  border-top-color: var(--navy-deep);
  animation: spin 0.7s linear infinite;
}

.btn.is-loading .btn__spinner { display: inline-block; }
.btn.is-loading .btn__label { opacity: 0.65; }

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  [data-parallax] { transform: none !important; }

  .hero__badge,
  .btn--gold::after,
  .wa-float::before,
  .hero__scroll-hint::after,
  .form-card::before {
    animation: none !important;
  }

  .hero__photo { transform: none !important; }
}