.app-shell {
  animation: shell-enter var(--duration-slow) var(--ease-standard);
}

.screen-stack > * {
  animation: rise-in var(--duration-slow) var(--ease-standard);
}

.cta-button,
.social-button,
.setting-row,
.history-item,
.nav-item,
.call-action__icon,
.back-button,
.icon-button,
.tab-button {
  transition:
    transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard),
    background-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard);
}

.is-pressing {
  transform: scale(0.98);
}

.screen-is-exiting .phone-frame {
  animation: page-exit 180ms var(--ease-standard) forwards;
}

.screen-slide-forward .phone-frame {
  animation: page-slide-in 220ms var(--ease-standard);
}

.screen-slide-back .phone-frame {
  animation: page-slide-back-in 220ms var(--ease-standard);
}

.tab-panel {
  animation: fade-up var(--duration-base) var(--ease-standard);
}

@keyframes shell-enter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes page-exit {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-18px);
  }
}

@keyframes page-slide-in {
  from {
    opacity: 0;
    transform: translateX(16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes page-slide-back-in {
  from {
    opacity: 0;
    transform: translateX(-16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}