/* ==========================================================================
   Dr. Kareena Ooi Branding - Custom Animations
   Scroll-driven entrance transitions and interactive keyframes
   ========================================================================== */

/* Standard keyframes for active transitions */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScaleUp {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Base class for elements that reveal on scroll */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

/* Class triggered by JS IntersectionObserver */
.reveal-on-scroll.active-reveal {
  opacity: 1;
  transform: translateY(0);
}

/* Delay modifiers for sequential card animations */
.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* Dynamic hovering micro-animations for premium feel */
.hover-float {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-float:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(27, 59, 43, 0.04);
}