/* Mobile Apps demo: a three-screen concept app in a phone frame (assets/js/demos/mobile.js). Screens slide
   sideways like a native app; the one in view is .is-current, those behind it .is-past. */

.appdemo {
  display: grid;
  justify-items: center;
  gap: var(--space-l);
}

.appdemo__guide {
  display: grid;
  justify-items: center;
  gap: var(--space-s);
}

.appdemo__steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2xs) var(--space-s);
  font-family: var(--font-sans);
  font-size: var(--step--1);
  color: var(--ink-2);
  counter-reset: step;
}

.appdemo__steps li {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  counter-increment: step;
}

.appdemo__steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border: var(--border);
  border-radius: var(--radius);
  font-variant-numeric: tabular-nums;
}

.appdemo__steps [aria-current] {
  color: var(--ink);
}

.appdemo__steps [aria-current]::before {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

@media (min-width: 768px) {
  .appdemo {
    grid-template-columns: auto auto;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
  }

  .appdemo__guide {
    order: 1;
    justify-items: start;
  }

  .appdemo__steps {
    flex-direction: column;
    gap: var(--space-s);
  }
}

/* Phone */

.phone {
  width: 18.5rem;
  max-width: 100%;
  aspect-ratio: 9 / 18.5;
  padding: 0.625rem;
  background: var(--ink);
  border-radius: 2.75rem;
  box-shadow: var(--shadow);
}

.phone__screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: 2.125rem;
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: var(--step--1);
}

.phone__screen::before {
  content: "";
  position: absolute;
  top: 0.625rem;
  left: 50%;
  z-index: 2;
  width: 5rem;
  height: 1.375rem;
  border-radius: 999px;
  background: var(--ink);
  translate: -50% 0;
}

/* Screens */

.app__screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: 3rem 1.125rem 1.125rem;
  background: var(--paper);
  transform: translateX(100%);
  transition: transform var(--dur-fast) var(--ease-out);
}

.app__screen.is-current {
  transform: none;
}

.app__screen.is-past {
  transform: translateX(-30%);
}

.app__brand,
.app__kicker {
  color: var(--ink-2);
}

.app__title {
  margin-top: var(--space-3xs);
  font-size: var(--step-2);
}

.app__title:focus {
  outline: none;
}

.app__title:focus-visible {
  outline: 2px solid var(--focus);
}

.app__sub {
  margin-top: var(--space-3xs);
  color: var(--ink-2);
}

.app__list {
  display: grid;
  gap: var(--space-2xs);
  margin-top: var(--space-m);
}

.app__class {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-xs);
  width: 100%;
  padding: var(--space-xs);
  border: var(--border);
  border-radius: 0.75rem;
  text-align: left;
}

.app__class:hover:not(:disabled) {
  border-color: var(--ink);
}

.app__time {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.app__name {
  display: block;
  font-weight: 500;
}

.app__meta {
  display: block;
  color: var(--ink-2);
}

.app__tag {
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
}

.app__back {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin: -0.75rem 0 0 -0.75rem;
  border-radius: 50%;
}

.app__back svg {
  width: 0.875rem;
  height: 0.875rem;
  rotate: 90deg;
}

.app__back:hover {
  color: var(--link-hover);
}

.app__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2xs);
  margin-top: var(--space-m);
}

.app__facts div {
  padding: var(--space-2xs);
  border: var(--border);
  border-radius: 0.5rem;
}

.app__facts dt {
  color: var(--ink-2);
}

.app__facts dd {
  margin: 0;
  font-weight: 500;
}

.app__about {
  margin-top: var(--space-m);
  line-height: var(--leading-body);
}

.app__spots {
  margin-top: var(--space-xs);
  color: var(--ink-2);
}

.app__cta {
  margin-top: auto;
  min-height: 2.75rem;
  border-radius: 0.75rem;
  background: var(--vermilion);
  color: var(--on-accent);
  font-weight: 500;
}

.app__cta:hover:not(:disabled) {
  background: var(--vermilion-press);
}

.app__cta:disabled {
  background: var(--ink);
  color: var(--paper);
  cursor: default;
}

.app__cta--line {
  border: 1px solid var(--ink);
  background: none;
  color: var(--ink);
}

.app__cta--line:hover:not(:disabled) {
  background: var(--ink);
  color: var(--paper);
}

/* Booked: a seal is pressed. */

.app__done {
  display: grid;
  justify-items: center;
  gap: var(--space-3xs);
  margin-block: auto;
  text-align: center;
}

.app__seal {
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: var(--space-s);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
}

.app__seal svg {
  width: 1.75rem;
  height: 1.75rem;
}

.app__note {
  margin-top: var(--space-s);
  color: var(--ink-2);
}

@media (prefers-reduced-motion: no-preference) {
  .app__screen.is-current .app__seal {
    animation: seal-press var(--dur-fast) var(--ease-out) 200ms both;
  }
}