.fvc-launcher{
  transform: perspective(700px) rotateX(var(--fvc-tiltY,0deg)) rotateY(var(--fvc-tiltX,0deg))
             translateY(0) scale(1);
}
.fvc-launcher:hover{
  transform: perspective(700px) rotateX(var(--fvc-tiltY,0deg)) rotateY(var(--fvc-tiltX,0deg))
             translateY(-4px) scale(1.08);
}

.fvc-panel__inner{
  transform: perspective(1400px) rotateX(var(--fvc-ptiltY,0deg)) rotateY(var(--fvc-ptiltX,0deg));
  transition: transform .5s cubic-bezier(.2,.8,.2,1), box-shadow .4s ease;
}

.fvc-particles{
  position:absolute; inset:0; z-index:0; overflow:hidden;
  pointer-events:none;
}
.fvc-particles span{
  position:absolute;
  bottom:-14px;
  width: var(--s, 5px); height: var(--s, 5px);
  border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,.9), rgba(139,92,246,0) 70%);
  opacity:.55;
  animation: fvcRise var(--d, 9s) linear infinite;
  animation-delay: var(--delay, 0s);
  left: var(--x, 50%);
}
@keyframes fvcRise{
  0%   { transform: translateY(0) translateX(0); opacity:0; }
  10%  { opacity:.6; }
  90%  { opacity:.4; }
  100% { transform: translateY(-560px) translateX(var(--drift, 20px)); opacity:0; }
}

.fvc-msg{
  animation: fvcMsgIn .48s cubic-bezier(.22,1.12,.36,1) both;
}
@keyframes fvcMsgIn{
  from{ opacity:0; transform: perspective(600px) translateY(14px) rotateX(8deg) scale(.96); }
  to  { opacity:1; transform: perspective(600px) translateY(0) rotateX(0) scale(1); }
}
.fvc-msg__bubble{
  position:relative;
  box-shadow: 0 10px 26px -12px rgba(0,0,0,.55);
}
.fvc-msg--bot .fvc-msg__bubble::before{
  content:'';
  position:absolute; inset:-1px;
  border-radius:inherit;
  padding:1px;
  background: linear-gradient(135deg, rgba(40,199,255,.4), rgba(139,92,246,.3), transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity:.8; pointer-events:none;
}

@media (prefers-reduced-motion: reduce){
  .fvc-particles, .fvc-msg, .fvc-launcher, .fvc-panel__inner{
    animation: none !important; transition: none !important;
  }
}