/* ============================================
   SmartFlowAI - Animaciones
   Fade-up al scroll + transiciones
   ============================================ */

/* --- Scroll Reveal Base --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Stagger delays for grid items */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Fade In Variants --- */
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- Scale Reveal --- */
.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* --- Counter Animation --- */
.counter-animate {
  display: inline-block;
}

/* --- Hero Entrance --- */
.hero-entrance {
  opacity: 0;
  transform: translateY(20px);
  animation: heroEnter 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-entrance-delay-1 { animation-delay: 0.15s; }
.hero-entrance-delay-2 { animation-delay: 0.3s; }
.hero-entrance-delay-3 { animation-delay: 0.45s; }
.hero-entrance-delay-4 { animation-delay: 0.6s; }

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

/* --- Gradient Line Animation --- */
.animated-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  margin: 0 auto 16px;
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.animated-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* --- Pulse for CTA --- */
.pulse-glow {
  position: relative;
}

.pulse-glow::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s ease;
  filter: blur(12px);
}

.pulse-glow:hover::before {
  opacity: 0.4;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-entrance {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .animated-line::after {
    animation: none;
  }

  .scroll-indicator,
  .scroll-indicator-dot {
    animation: none;
    opacity: 1;
  }

  .problem-card::before,
  .result-card::before,
  .btn-primary::after {
    display: none;
  }

  .bridge-cta:hover {
    gap: 12px;
  }
}