.app-update-banner {
  position: fixed;
  left: 50%;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  transform: translate(-50%, 140%);
  z-index: 12000;
  width: min(560px, calc(100vw - 24px));
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  background: #0c4a6e;
  color: #f0f9ff;
  box-shadow: 0 12px 34px rgba(8, 47, 73, 0.38);
  opacity: 0;
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.app-update-banner.has-bottom-nav {
  bottom: calc(84px + env(safe-area-inset-bottom, 0px));
}

.app-update-banner.visible {
  transform: translate(-50%, 0);
  opacity: 1;
}

.app-update-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #0891b2;
  font-size: 1rem;
}

.app-update-copy {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.35;
}

.app-update-copy strong {
  font-size: 0.95rem;
  font-weight: 700;
}

.app-update-copy span {
  font-size: 0.82rem;
  color: #bae6fd;
}

.app-update-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.app-update-actions button {
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 10px;
  padding: 9px 14px;
  cursor: pointer;
  min-height: 40px;
  border: 1px solid transparent;
}

.app-update-apply {
  background: #22d3ee;
  color: #083344;
}

.app-update-apply:hover {
  background: #67e8f9;
}

.app-update-later {
  background: transparent;
  color: #bae6fd;
  border-color: rgba(186, 230, 253, 0.35);
}

.app-update-later:hover {
  background: rgba(186, 230, 253, 0.12);
}

.app-update-actions button:focus-visible {
  outline: 3px solid #67e8f9;
  outline-offset: 2px;
}

@media (max-width: 520px) {
  .app-update-banner {
    flex-wrap: wrap;
    gap: 10px;
  }

  .app-update-copy {
    flex-basis: calc(100% - 52px);
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .app-update-banner {
    transition: none;
  }
}