.pwa-install-banner {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #1e3a5f;
  color: #fff;
  padding: 14px 20px;
  border-radius: 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  z-index: 9999;
  align-items: center;
  gap: 14px;
  max-width: 360px;
  width: calc(100% - 40px);
  animation: pwa-slide-up 0.4s ease;
}
.pwa-install-banner.visible {
  display: flex;
}
.pwa-install-banner__icon {
  font-size: 2rem;
  flex-shrink: 0;
}
.pwa-install-banner__text {
  flex: 1;
  font-size: 0.875rem;
  line-height: 1.4;
}
.pwa-install-banner__text strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}
.pwa-install-banner__btn {
  background: #25D366;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
}
.pwa-install-banner__close {
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
}
@keyframes pwa-slide-up {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to   { transform: translateX(-50%) translateY(0);   opacity: 1; }
}