/* =========================================================
   WantSeoShopee — Animations
   Scroll reveal, floating mockup, Zalo ping.
   ========================================================= */

/* ---- Scroll reveal (kích hoạt bằng js/scroll-reveal.js) ---- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---- Floating mockup ---- */
.float-slow {
  animation: float-slow 6s ease-in-out infinite;
}
@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---- Zalo ping ---- */
.float-zalo-ping {
  animation: zalo-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}
@keyframes zalo-ping {
  0% { transform: scale(1); opacity: 0.8; }
  75%, 100% { transform: scale(1.7); opacity: 0; }
}

/* ---- Tôn trọng người dùng tắt hiệu ứng ---- */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-slow { animation: none; }
  .float-zalo-ping { animation: none; }
  html { scroll-behavior: auto; }
}