@keyframes ripple {
  0%   { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2.5); opacity: 0; }
}
@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124,58,237,0.4); }
  50%       { box-shadow: 0 0 0 10px rgba(124,58,237,0); }
}
/* ── Scroll-triggered Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1),
              transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1),
              transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1),
              transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.5s cubic-bezier(0.4,0,0.2,1),
              transform 0.5s cubic-bezier(0.34,1.56,0.64,1);
}
.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }

/* ── Ripple effect on buttons ── */
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* ── Node pulse (process diagram) ── */
.node-active {
  animation: node-pulse 2s ease-in-out infinite;
}