/* The closing band (src/tour/finale.js): the page's last promise at chapter
   scale, three proofs as a ruled band, then the downloads. It stays dark and
   continuous with the `.tour` ground and adds one pool of light behind its
   content, nothing more.

   The sheet owns the band's buttons too. They wear the hero's pill idiom
   (direction-a.css `.a-primary-cta` / `.a-quiet-cta`), which is built on `--a-*`
   tokens that only `.direction-a` declares, so `.finale__ctas` declares the ones
   the pills read. */

.finale {
  --finale-rule: rgb(255 255 255 / 15%);
  position: relative;
  z-index: 1;
  padding-block: clamp(4rem, 11vh, 7.5rem) 0;
  color: var(--t-ink);
  font-family: var(--font-display);
  isolation: isolate;
}

.finale::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    radial-gradient(58rem 24rem at 50% 64%, rgb(255 255 255 / 6%), transparent 70%),
    radial-gradient(40rem 22rem at 10% 6%, rgb(255 255 255 / 4%), transparent 72%);
  content: "";
  pointer-events: none;
}

.finale__frame {
  width: var(--frame-width);
  margin-inline: auto;
}

.finale [data-reveal] {
  opacity: 0;
  transform: translateY(var(--rise, 1.5rem));
  transition:
    opacity 700ms ease var(--reveal-delay, 0ms),
    transform 760ms cubic-bezier(0.22, 0.78, 0.18, 1) var(--reveal-delay, 0ms);
}

.finale [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.finale__head {
  padding-inline: var(--frame-pad);
}

/* The chapter word's own type, on two lines. The vertical wash is the one
   accent: line two cools toward a blue-white; line one stays pure. The padding
   keeps ascenders and descenders inside the box `background-clip: text` paints. */
.finale__title {
  margin: 0;
  padding-block: 0.06em 0.12em;
  background: linear-gradient(180deg, #ffffff 0%, #ffffff 46%, #eef5fb 56%, #a3b8c9 100%);
  background-clip: text;
  color: transparent;
  font: 600 clamp(4.2rem, 14.5vw, 13.5rem) / 0.82 var(--font-display);
  letter-spacing: -0.065em;
}

/* ---------- the proofs ---------- */

.finale__band {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr) minmax(0, 1fr);
  margin-top: clamp(2.25rem, 5.5vh, 3.75rem);
  border-block: 1px solid var(--finale-rule);
}

.finale__cell {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(2rem, 4.4vw, 3.5rem) var(--frame-pad);
}

.finale__cell + .finale__cell {
  border-left: 1px solid var(--finale-rule);
}

/* The numeral of this band is a token, set in mono and fading toward its foot. */
.finale__token {
  padding-bottom: 0.1em;
  background: linear-gradient(180deg, #ffffff 30%, rgb(255 255 255 / 56%) 100%);
  background-clip: text;
  color: transparent;
  font: 600 clamp(2.2rem, 4.9vw, 4.4rem) / 1 var(--font-mono);
  letter-spacing: -0.06em;
  white-space: nowrap;
}

/* Each cell's label lights and its tick lands in turn (`--i`), half a second
   after the cell itself has revealed. */
.finale__label {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  color: rgb(255 255 255 / 56%);
  font: 500 0.74rem / 1.4 var(--font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: color 420ms ease calc(0.5s + var(--i) * 120ms);
}

.finale__tick {
  color: var(--sg-green);
  font-style: normal;
  opacity: 0;
  transform: scale(0.4);
  transition:
    opacity 380ms ease calc(0.5s + var(--i) * 120ms),
    transform 460ms cubic-bezier(0.22, 0.78, 0.18, 1) calc(0.5s + var(--i) * 120ms);
}

.finale__cell.is-revealed .finale__label {
  color: var(--t-ink);
}

.finale__cell.is-revealed .finale__tick {
  opacity: 1;
  transform: none;
}

.finale__note {
  max-width: 34ch;
  margin: 0.2rem 0 0;
  color: rgb(255 255 255 / 68%);
  font: 400 0.88rem / 1.55 var(--font-display);
}

/* Underlined at rest so the disclosure link reads as a link inside prose. */
.finale__privacy {
  color: var(--t-ink);
  text-decoration: underline;
  text-decoration-color: rgb(255 255 255 / 38%);
  text-underline-offset: 0.22em;
  transition: text-decoration-color 200ms ease;
}

.finale__privacy:hover {
  text-decoration-color: var(--t-ink);
}

/* ---------- downloads ---------- */

/* The buttons sit in an even frame between the cell rule and the footer's own
   top rule, so the root carries no bottom padding. */
.finale__foot {
  padding-block: clamp(1.75rem, 3vw, 2.5rem);
  padding-inline: var(--frame-pad);
}

.finale__ctas {
  --a-surface-0: #0a0c0b;
  --a-ink: #ffffff;
  --a-line-strong: rgb(255 255 255 / 21%);
  --a-accent: var(--accent);
  --a-accent-rgb: var(--accent-rgb);
  --a-ease-lock: cubic-bezier(0.22, 0.78, 0.18, 1);
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem 1.4rem;
}

/* The visitor's own platform leads, like the hero's install block. */
.finale__ctas[data-os="win"] .finale__dl[data-os="win"] {
  order: -1;
}

.finale__dl {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

/* Two classes, so these sizes outrank the pills' own in direction-a.css. */
.finale__ctas .finale__btn {
  min-height: 3.5rem;
  gap: 1.6rem;
  padding: 0.8rem 1.7rem;
  font-size: 1.02rem;
  text-decoration: none;
  isolation: isolate;
  overflow: hidden;
}

/* The primary keeps the hero's own hover (a dark plate slides in under the
   label); the arrow settles a little deeper into its tray than it does there. */
.finale__ctas .finale__btn:hover .a-install-icon,
.finale__ctas .finale__btn:focus-visible .a-install-icon {
  transform: translateY(0.22rem);
}

/* The outline twin fills from the left on hover — the primary's sweep in the
   other direction, so the two read as one pair. */
.finale__ctas .a-quiet-cta.finale__btn::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: rgb(255 255 255 / 13%);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 460ms var(--a-ease-lock);
}

.finale__ctas .a-quiet-cta.finale__btn:hover,
.finale__ctas .a-quiet-cta.finale__btn:focus-visible {
  border-color: rgb(255 255 255 / 72%);
}

.finale__ctas .a-quiet-cta.finale__btn:hover::before,
.finale__ctas .a-quiet-cta.finale__btn:focus-visible::before {
  transform: scaleX(1);
}

/* GitHub is a text link, not a third pill: the underline draws in and the
   arrow leaves up and to the right. */
.finale__gh {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  align-self: flex-start;
  gap: 0.45rem;
  padding-inline: 0.35rem;
  color: var(--t-ink-soft);
  font: 500 0.95rem/1 var(--font-display);
  text-decoration: none;
  transition: color 200ms ease;
}

.finale__gh > span:first-child {
  padding-bottom: 0.22rem;
  background: linear-gradient(currentcolor, currentcolor) left bottom / 0 1px no-repeat;
  transition: background-size 340ms cubic-bezier(0.22, 0.78, 0.18, 1);
}

.finale__gh-arrow {
  transition: transform 280ms cubic-bezier(0.22, 0.78, 0.18, 1);
}

.finale__gh:hover,
.finale__gh:focus-visible {
  color: var(--t-ink);
}

.finale__gh:hover > span:first-child,
.finale__gh:focus-visible > span:first-child {
  background-size: 100% 1px;
}

.finale__gh:hover .finale__gh-arrow,
.finale__gh:focus-visible .finale__gh-arrow {
  transform: translate(0.2rem, -0.2rem);
}

.finale__gh:focus-visible,
.finale__ctas .finale__btn:focus-visible {
  outline: 2px solid var(--t-ink);
  outline-offset: 4px;
}

/* ---------- narrow screens ---------- */

@media (max-width: 768px) {
  .finale__band {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 1.6rem;
  }

  .finale__cell {
    gap: 0.5rem;
    padding-block: 1.15rem;
  }

  .finale__cell + .finale__cell {
    border-top: 1px solid var(--finale-rule);
    border-left: 0;
  }

  .finale__token {
    font-size: 2.3rem;
  }

  .finale__foot {
    padding-block: 1.5rem;
  }

  .finale__ctas .finale__btn {
    min-height: 3rem;
    font-size: 0.95rem;
  }
}

@media (max-width: 47.5rem) {
  .finale {
    padding-block: 3rem 0;
  }

  .finale__ctas {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .finale__ctas .finale__btn {
    gap: 1rem;
  }

  .finale__gh {
    min-height: 2.5rem;
  }
}

/* ---------- reduced motion: the end state, no travel ---------- */

@media (prefers-reduced-motion: reduce) {
  .finale [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .finale__label {
    color: var(--t-ink);
  }

  .finale__tick {
    opacity: 1;
    transform: none;
  }
}