/* ===== Easing curves ===== */
:root {
  --ease-out-quart: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Scroll-triggered animations (smoother) ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  filter: blur(4px);
  transition: opacity 0.9s var(--ease-out-quart),
              transform 0.9s var(--ease-out-quart),
              filter 0.9s var(--ease-out-quart);
  will-change: opacity, transform, filter;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.fade-left {
  opacity: 0;
  transform: translateX(-24px);
  filter: blur(4px);
  transition: opacity 0.9s var(--ease-out-quart),
              transform 0.9s var(--ease-out-quart),
              filter 0.9s var(--ease-out-quart);
}
.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
}

.fade-right {
  opacity: 0;
  transform: translateX(24px);
  filter: blur(4px);
  transition: opacity 0.9s var(--ease-out-quart),
              transform 0.9s var(--ease-out-quart),
              filter 0.9s var(--ease-out-quart);
}
.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.9s var(--ease-out-quart);
}
.fade-in.visible { opacity: 1; }

.scale-in {
  opacity: 0;
  transform: scale(0.94);
  filter: blur(4px);
  transition: opacity 0.7s var(--ease-out-quart),
              transform 0.7s var(--ease-out-quart),
              filter 0.7s var(--ease-out-quart);
}
.scale-in.visible {
  opacity: 1;
  transform: scale(1);
  filter: blur(0);
}

/* ===== Staggered children ===== */
.stagger > * {
  opacity: 0;
  transform: translateY(18px);
  filter: blur(3px);
  transition: opacity 0.7s var(--ease-out-quart),
              transform 0.7s var(--ease-out-quart),
              filter 0.7s var(--ease-out-quart);
}
.stagger.visible > *:nth-child(1) { transition-delay: 0.08s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.16s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.24s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.32s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.40s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.48s; }
.stagger.visible > *:nth-child(7) { transition-delay: 0.56s; }
.stagger.visible > *:nth-child(8) { transition-delay: 0.64s; }
.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* ===== Hover transitions ===== */
.hover-lift {
  transition: transform 0.4s var(--ease-out-quart),
              box-shadow 0.4s var(--ease-out-quart),
              border-color 0.3s ease;
}
.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 50px rgba(32, 32, 204, 0.2);
}

.hover-scale {
  transition: transform 0.3s var(--ease-out-quart);
}
.hover-scale:hover { transform: scale(1.02); }

/* ===== Background glow pulse (hero) ===== */
@keyframes glow-pulse {
  0%, 100% { transform: scale(1); opacity: 0.06; }
  50% { transform: scale(1.15); opacity: 0.09; }
}
.glow-bg { animation: glow-pulse 8s ease-in-out infinite; }

@keyframes glow-pulse-slow {
  0%, 100% { transform: scale(1); opacity: 0.03; }
  50% { transform: scale(1.2); opacity: 0.05; }
}
.glow-bg-slow { animation: glow-pulse-slow 10s ease-in-out 2s infinite; }

/* ===== Reduced motion preference ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-up, .fade-left, .fade-right, .fade-in, .scale-in,
  .stagger > * {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
}