.deposit-phase3-toast {
  position: fixed;
  z-index: 100050;
  left: 50%;
  top: max(14px, env(safe-area-inset-top));
  width: min(320px, calc(100vw - 28px));
  padding: 11px 14px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  background: rgba(18,18,18,.96);
  color: #fff;
  box-shadow: 0 10px 28px rgba(0,0,0,.28);
  font: 600 13px/1.45 Arial, sans-serif;
  text-align: center;
  opacity: 0;
  transform: translate(-50%, -10px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}

.deposit-phase3-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.deposit-phase3-toast[data-tone="success"] {
  border-color: rgba(246,214,0,.42);
  box-shadow: 0 10px 28px rgba(0,0,0,.28), inset 3px 0 0 #f6d600;
}

.deposit-phase3-toast[data-tone="error"] {
  border-color: rgba(239,68,68,.45);
  box-shadow: 0 10px 28px rgba(0,0,0,.28), inset 3px 0 0 #ef4444;
}

@media (prefers-reduced-motion: reduce) {
  .deposit-phase3-toast {
    transition: none;
  }
}