.chat-fab-window {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  /* Use Mantine variables in the editor; fall back to shared tokens in storybook */
  background: var(--mantine-color-body, var(--color-surface, #ffffff));
  border-radius: 16px;
  border: 1px solid var(--border-subtle, var(--color-border, #e3e8ee));
  box-shadow:
    0 8px 32px rgba(15, 23, 42, 0.14),
    0 2px 8px rgba(15, 23, 42, 0.06);
  overflow: hidden;

  /* Closed state: collapsed toward bottom-right origin */
  opacity: 0;
  transform: scale(0.9) translateY(14px);
  pointer-events: none;
  transform-origin: bottom right;
  transition:
    opacity 200ms ease,
    transform 220ms cubic-bezier(0.32, 0.72, 0, 1);
}

.chat-fab-window--open {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

[data-mantine-color-scheme="dark"] .chat-fab-window,
[data-theme="dark"] .chat-fab-window {
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.38),
    0 2px 8px rgba(0, 0, 0, 0.22);
}

@media (prefers-reduced-motion: reduce) {
  .chat-fab-window {
    transition: opacity 100ms ease;
  }
}