.pwa-update-banner {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 22px;
  width: min(620px, calc(100vw - 36px));
  padding: 18px 20px;
  border: 1px solid var(--box-border, #000000);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 22px 60px rgba(15, 23, 42, 0.2);
  color: #0f172a;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-update-hidden {
  display: none;
}

.pwa-update-copy {
  min-width: 0;
  flex: 1;
}

.pwa-update-copy strong {
  display: block;
  font-size: 0.98rem;
  line-height: 1.35;
}

.pwa-update-copy p {
  margin: 4px 0 0;
  color: #64748b;
  font-size: 0.86rem;
  line-height: 1.45;
}

.pwa-update-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 9px;
}

.pwa-update-actions button {
  min-height: 42px;
  padding: 9px 15px;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  background: #fff;
  color: #334155;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 750;
  cursor: pointer;
}

.pwa-update-actions .pwa-update-primary {
  border-color: #059669;
  background: #059669;
  color: #fff;
}

.pwa-update-actions button:focus-visible {
  outline: 3px solid rgba(16, 185, 129, 0.3);
  outline-offset: 2px;
}

.pwa-update-actions button:disabled {
  cursor: wait;
  opacity: 0.65;
}

@media (max-width: 640px) {
  .pwa-update-banner {
    right: 14px;
    bottom: max(14px, env(safe-area-inset-bottom));
    left: 14px;
    width: auto;
    align-items: stretch;
    flex-direction: column;
    gap: 14px;
    padding: 17px;
    border-radius: 20px;
  }

  .pwa-update-actions {
    width: 100%;
  }

  .pwa-update-actions button {
    flex: 1;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .pwa-update-banner:not(.pwa-update-hidden) {
    animation: pwa-update-enter 180ms ease-out;
  }

  @keyframes pwa-update-enter {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
}