* { -webkit-font-smoothing: antialiased; }

html { scroll-behavior: smooth; }

.hero-bg {
  background-image: url('https://images.unsplash.com/photo-1592841200221-a6898f307baa?w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

@media (max-width: 768px) {
  .hero-bg { background-attachment: scroll; }
}

.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}
.fade-in-up:nth-child(1) { animation-delay: 0.1s; }
.fade-in-up:nth-child(2) { animation-delay: 0.2s; }
.fade-in-up:nth-child(3) { animation-delay: 0.3s; }
.fade-in-up:nth-child(4) { animation-delay: 0.4s; }
.fade-in-up:nth-child(5) { animation-delay: 0.5s; }

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

#navbar:not(.scrolled) .nav-link,
#navbar:not(.scrolled) .nav-brand {
  color: white;
}

#navbar.scrolled .nav-link {
  color: #0F2C4A;
}

.benefit-card { transition: transform 0.3s ease; }
.benefit-card:hover { transform: translateY(-6px); }

.card-problem { transition: transform 0.3s ease; }
.card-problem:hover { transform: translateY(-4px); }

input:focus, select:focus, textarea:focus { outline: none; }

#whatsapp-float {
  animation: pulse-wa 2s infinite;
}

@keyframes pulse-wa {
  0%, 100% { box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 10px 40px rgba(37, 211, 102, 0.7); }
}