Hero Exit

<section class="kodza-hero-exit">
  <div class="kodza-hero-exit__track">
    <div class="kodza-hero-exit__scene">
      <div class="kodza-hero-exit__inner">
        <p class="kodza-hero-exit__eyebrow"><span class="kodza-hero-exit__rise">Launch week · day one</span></p>
        <h1 class="kodza-hero-exit__title"><span class="kodza-hero-exit__line"><span class="kodza-hero-exit__rise">Enter big.</span></span> <span class="kodza-hero-exit__slot" aria-hidden="true"></span> <span class="kodza-hero-exit__line"><span class="kodza-hero-exit__rise">Leave clean.</span></span></h1>
        <div class="kodza-hero-exit__foot">
          <p class="kodza-hero-exit__lead">The title parts, the picture opens, the next section walks on. One paste, no library.</p>
          <div class="kodza-hero-exit__actions">
            <a class="kodza-hero-exit__button kodza-hero-exit__button--ink" href="#">Get the code<svg class="kodza-hero-exit__arrow" viewBox="0 0 16 16" aria-hidden="true"><path d="M2.5 8h10.5M9 3.5 13.5 8 9 12.5" /></svg></a>
            <a class="kodza-hero-exit__button kodza-hero-exit__button--soft" href="#">See it live</a>
          </div>
        </div>
        <p class="kodza-hero-exit__hint" aria-hidden="true"><span class="kodza-hero-exit__rise"><span class="kodza-hero-exit__cue"></span>Scroll to exit</span></p>
      </div>
      <div class="kodza-hero-exit__media">
        <div class="kodza-hero-exit__window"><img src="https://kodza.dev/media/kz-arch-2400.webp" alt="A concrete wall with a round-topped doorway, sunlight pouring through it" width="2400" height="2400" /><div class="kodza-hero-exit__shade"></div></div>
        <div class="kodza-hero-exit__card"></div>
      </div>
    </div>
  </div>
</section>

/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Hero Exit
   A centred title in two big lines. On scroll the scene holds for a moment and takes itself
   apart: the top line rises, the bottom line drops, a picture opens in the gap between them and
   tightens into a card that steps back, then the next section slides over it.
   Without the script, or with reduced motion, nothing pins: the title, then the picture.
   Everything is tuned with the --kz-hero-exit-* variables. */
.kodza-hero-exit {
  --kz-hero-exit-ink: #0a0a0a;
  --kz-hero-exit-paper: #f2f2f0;
  --kz-hero-exit-dim: rgba(10, 10, 10, 0.62);
  --kz-hero-exit-faint: rgba(10, 10, 10, 0.6);
  --kz-hero-exit-soft: rgba(10, 10, 10, 0.07);
  --kz-hero-exit-bg: transparent;
  --kz-hero-exit-shade: #0a0a0a; /* the card darkens toward it as the next section covers it */
  --kz-hero-exit-width: 1240px;
  --kz-hero-exit-gutter: clamp(16px, 4vw, 40px);
  --kz-hero-exit-pad-y: clamp(20px, 2.6vw, 36px);
  --kz-hero-exit-size: clamp(44px, min(14cqi, 17svh), 168px); /* the title lines */
  --kz-hero-exit-focus: 50% 42%; /* the part of the picture the card shows */
  --kz-hero-exit-card: 0.74; /* the card's height, as a share of the screen */
  --kz-hero-exit-ratio: 0.8; /* the card's width / height */
  --kz-hero-exit-radius: 16px;
  --kz-hero-exit-top: 0px; /* height of a fixed site header: the scene pins under it */
  --kz-hero-exit-distance: 180svh; /* how long the scene holds before the next section comes */
  --kz-hero-exit-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --kz-hero-exit-ease: cubic-bezier(0.22, 1, 0.36, 1);
  container: kodza-hero-exit / inline-size;
  position: relative;
  box-sizing: border-box;
  width: 100%;
  color: var(--kz-hero-exit-ink);
}

.kodza-hero-exit__scene {
  position: relative;
  background: var(--kz-hero-exit-bg);
}

.kodza-hero-exit__inner {
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: calc(var(--kz-hero-exit-width) + 2 * var(--kz-hero-exit-gutter));
  margin: 0 auto;
  padding: clamp(72px, 9vw, 140px) max(var(--kz-hero-exit-gutter), env(safe-area-inset-right, 0px)) clamp(56px, 7vw, 104px) max(var(--kz-hero-exit-gutter), env(safe-area-inset-left, 0px));
  text-align: center;
}

.kodza-hero-exit__eyebrow {
  overflow: hidden;
  margin: 0 0 clamp(18px, 2.2cqi, 30px);
  font-family: var(--kz-hero-exit-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--kz-hero-exit-faint);
}

.kodza-hero-exit__rise {
  display: block;
}

.kodza-hero-exit__title {
  margin: 0 0 clamp(26px, 3cqi, 40px);
  font-size: var(--kz-hero-exit-size);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.055em;
}

/* Each line is a mask: the words rise out of it on arrival */
.kodza-hero-exit__line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
  margin-bottom: -0.08em;
  white-space: nowrap;
}

/* The seam between the lines, where the picture opens: the script measures it. It sits at the
   foot of the first line's mask, under its descenders, and moves nothing */
.kodza-hero-exit__slot {
  position: relative;
  top: 0.08em;
  display: block;
  height: 0;
}

.kodza-hero-exit__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.kodza-hero-exit__lead {
  max-width: 34ch;
  margin: 0;
  font-size: clamp(16px, 1.3cqi, 18px);
  line-height: 1.55;
  color: var(--kz-hero-exit-dim);
  text-wrap: balance;
}

.kodza-hero-exit__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.kodza-hero-exit__button {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 26px;
  border: 0;
  border-radius: 999px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.kodza-hero-exit__button:focus-visible {
  outline: 2px solid var(--kz-hero-exit-ink);
  outline-offset: 3px;
}

/* Solid: the arrow steps forward on hover */
.kodza-hero-exit__button--ink {
  background: var(--kz-hero-exit-ink);
  color: var(--kz-hero-exit-paper);
}

.kodza-hero-exit__arrow {
  flex: none;
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.3s var(--kz-hero-exit-ease);
}

/* Soft: ink rises from the bottom edge on hover */
.kodza-hero-exit__button--soft {
  background: var(--kz-hero-exit-soft);
  color: var(--kz-hero-exit-ink);
  transition: color 0.4s var(--kz-hero-exit-ease);
}

.kodza-hero-exit__button--soft::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--kz-hero-exit-ink);
  transform: translateY(101%);
  transition: transform 0.4s var(--kz-hero-exit-ease);
}

@media (hover: hover) {
  .kodza-hero-exit__button--ink:hover .kodza-hero-exit__arrow {
    transform: translateX(4px);
  }

  .kodza-hero-exit__button--soft:hover {
    color: var(--kz-hero-exit-paper);
  }

  .kodza-hero-exit__button--soft:hover::before {
    transform: none;
  }
}

.kodza-hero-exit__hint {
  display: none;
  overflow: hidden;
  margin: 0;
  font-family: var(--kz-hero-exit-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--kz-hero-exit-faint);
}

.kodza-hero-exit__hint .kodza-hero-exit__rise {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* A short stroke runs down a hairline, over and over */
.kodza-hero-exit__cue {
  position: relative;
  overflow: hidden;
  width: 1px;
  height: 28px;
  background: var(--kz-hero-exit-soft);
}

.kodza-hero-exit__cue::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 10px;
  background: currentColor;
  animation: kodza-hero-exit-cue 1.8s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes kodza-hero-exit-cue {
  from {
    transform: translateY(-100%);
  }

  to {
    transform: translateY(280%);
  }
}

/* The picture, without the script: a full-bleed band under the words */
.kodza-hero-exit__media {
  position: relative;
  overflow: hidden;
  height: clamp(260px, 52cqi, 680px);
  pointer-events: none;
}

.kodza-hero-exit__window {
  position: absolute;
  inset: 0;
}

.kodza-hero-exit__window img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: var(--kz-hero-exit-focus);
}

.kodza-hero-exit__shade {
  position: absolute;
  inset: 0;
  background: var(--kz-hero-exit-shade);
  opacity: 0;
}

/* The card the picture tightens into: the script reads its box */
.kodza-hero-exit__card {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  height: min(calc((100svh - var(--kz-hero-exit-top)) * var(--kz-hero-exit-card)), calc(min(100cqi - 2 * var(--kz-hero-exit-gutter), 72cqi) / var(--kz-hero-exit-ratio)));
  aspect-ratio: var(--kz-hero-exit-ratio);
  border-radius: var(--kz-hero-exit-radius);
  transform: translate(-50%, -50%);
  visibility: hidden;
}

/* With the script and motion: a tall track, the scene pinned inside it, the picture closed at the
   seam. The track runs one screen past the section, which cuts it there (no margin involved, a
   theme sets those): the next section slides over the scene */
@media (prefers-reduced-motion: no-preference) {
  .kodza-hero-exit.is-ready {
    overflow: clip;
    height: calc(100svh - var(--kz-hero-exit-top) + var(--kz-hero-exit-distance));
    clip-path: inset(0);
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__track {
    height: calc(2 * (100svh - var(--kz-hero-exit-top)) + var(--kz-hero-exit-distance));
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__scene {
    position: sticky;
    top: var(--kz-hero-exit-top);
    overflow: hidden;
    overflow: clip;
    height: calc(100svh - var(--kz-hero-exit-top));
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__inner {
    justify-content: center;
    height: 100%;
    padding-top: var(--kz-hero-exit-pad-y);
    padding-bottom: calc(var(--kz-hero-exit-pad-y) + 48px);
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__hint {
    position: absolute;
    bottom: var(--kz-hero-exit-pad-y);
    left: 50%;
    display: block;
    translate: -50% 0;
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__media {
    position: absolute;
    inset: 0;
    z-index: 0;
    height: auto;
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__window {
    clip-path: inset(50% 0 50% 0);
  }

  .kodza-hero-exit.is-ready .kodza-hero-exit__card {
    display: block;
  }

  /* Waiting for its entrance: the script sets is-shown and plays the motion in the same frame */
  .kodza-hero-exit.is-ready:not(.is-shown) .kodza-hero-exit__rise {
    transform: translateY(105%);
  }

  .kodza-hero-exit.is-ready:not(.is-shown) .kodza-hero-exit__lead,
  .kodza-hero-exit.is-ready:not(.is-shown) .kodza-hero-exit__actions {
    opacity: 0;
  }
}

/* A phone: the buttons share the row */
@container kodza-hero-exit (max-width: 520px) {
  .kodza-hero-exit__foot {
    align-self: stretch;
  }

  .kodza-hero-exit__button {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-hero-exit *,
  .kodza-hero-exit *::before,
  .kodza-hero-exit *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* kodza-guard 430cd1ac6bf9 — generated by Kodza, do not edit.
   Theme guard: keeps a site's own CSS (WordPress themes, Bootstrap, CSS resets…) off this
   component. :not(#_) is always true and weighs as much as an id, so these lines win over
   theme rules made of classes and tags. Customise the component through its --kz-* variables. */

/* What the browser gives, where the component sets it only in some states: at the lowest weight, so its own rules below put it back */

:where(.kodza-hero-exit__eyebrow):not(#_),
:where(.kodza-hero-exit__title):not(#_),
:where(.kodza-hero-exit__lead):not(#_),
:where(.kodza-hero-exit__window img:where(:not([class*="kodza-"]))):not(#_) {
  transition-duration: revert;
}

:where(.kodza-hero-exit__button):not(#_) {
  outline: revert;
  transition: revert;
  outline-offset: revert;
}

:where(.kodza-hero-exit__hint):not(#_) {
  position: revert;
  transition-duration: revert;
}

/* What the browser gives, on everything the component leaves to it */

.kodza-hero-exit__track:not(#_),
.kodza-hero-exit__scene:not(#_),
.kodza-hero-exit__rise:not(#_),
.kodza-hero-exit__line:not(#_),
.kodza-hero-exit__slot:not(#_),
.kodza-hero-exit__foot:not(#_),
.kodza-hero-exit__actions:not(#_),
.kodza-hero-exit__cue:not(#_),
.kodza-hero-exit__media:not(#_),
.kodza-hero-exit__window:not(#_),
.kodza-hero-exit__shade:not(#_),
.kodza-hero-exit__card:not(#_) {
  box-sizing: revert;
}

.kodza-hero-exit__eyebrow:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
  transition-delay: revert;
}

.kodza-hero-exit__title:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
  transition-delay: revert;
}

.kodza-hero-exit__lead:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-height: revert;
  font-family: revert;
  font-weight: revert;
  font-style: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
  transition-delay: revert;
}

.kodza-hero-exit__button:not(#_) {
  margin: revert;
  list-style: revert;
  float: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-style: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-hero-exit__arrow:not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-hero-exit__hint:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
  transition-delay: revert;
}

.kodza-hero-exit__window img:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
  transition-delay: revert;
}

.kodza-hero-exit__eyebrow:not(#_):where(:not([hidden])),
.kodza-hero-exit__title:not(#_):where(:not([hidden])),
.kodza-hero-exit__lead:not(#_):where(:not([hidden])),
.kodza-hero-exit__arrow:not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-hero-exit__eyebrow:not(#_):where([hidden]),
.kodza-hero-exit__title:not(#_):where([hidden]),
.kodza-hero-exit__lead:not(#_):where([hidden]),
.kodza-hero-exit__arrow:not(#_):where([hidden]) {
  display: none;
}

.kodza-hero-exit__cue:not(#_)::before {
  box-sizing: revert;
}

/* The component's own rules, one step stronger: real buttons and fields, what it sets on tags themes style (links, lists, headings, images…), and the root width (a theme may narrow it, never widen it) */

.kodza-hero-exit__eyebrow:not(#_) {
  margin: 0 0 clamp(18px, 2.2cqi, 30px);
  font-family: var(--kz-hero-exit-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--kz-hero-exit-faint);
}

.kodza-hero-exit__title:not(#_) {
  margin: 0 0 clamp(26px, 3cqi, 40px);
  font-size: var(--kz-hero-exit-size);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.055em;
}

.kodza-hero-exit__lead:not(#_) {
  max-width: 34ch;
  margin: 0;
  font-size: clamp(16px, 1.3cqi, 18px);
  line-height: 1.55;
  color: var(--kz-hero-exit-dim);
}

.kodza-hero-exit__button:not(#_) {
  position: relative;
  box-sizing: border-box;
  display: inline-flex;
  padding: 0 26px;
  border: 0;
  border-radius: 999px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
}

.kodza-hero-exit__button:focus-visible:not(#_) {
  outline: 2px solid var(--kz-hero-exit-ink);
  outline-offset: 3px;
}

.kodza-hero-exit__button--ink:not(#_) {
  background: var(--kz-hero-exit-ink);
  color: var(--kz-hero-exit-paper);
}

.kodza-hero-exit__arrow:not(#_) {
  transition: transform 0.3s var(--kz-hero-exit-ease);
}

.kodza-hero-exit__button--soft:not(#_) {
  background: var(--kz-hero-exit-soft);
  color: var(--kz-hero-exit-ink);
  transition: color 0.4s var(--kz-hero-exit-ease);
}

@media (hover: hover) {
  .kodza-hero-exit__button--soft:hover:not(#_) {
    color: var(--kz-hero-exit-paper);
  }
}

.kodza-hero-exit__hint:not(#_) {
  display: none;
  margin: 0;
  font-family: var(--kz-hero-exit-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--kz-hero-exit-faint);
}

.kodza-hero-exit__window img:not(#_) {
  display: block;
  max-width: none;
}

@media (prefers-reduced-motion: no-preference) {
  .kodza-hero-exit.is-ready .kodza-hero-exit__hint:not(#_) {
    position: absolute;
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-hero-exit *:where(p, h1, a, svg, img):not(#_) {
    transition-duration: 0.01ms !important;
  }
}

// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Kodza — Hero Exit
// Plays the entrance of Hero Split once the section is in view (the label and title lines rise
// out of their masks, the rest follows), then hands over to the scroll: the scene pins and takes
// itself apart, the top line rising and the bottom one dropping out of the screen while a
// picture opens in the gap between them and tightens into a card that steps back; the next
// section then slides over it. Every move is a paused animation set from the scroll: scrolling
// back up plays it in reverse. "kodza:replay" plays the entrance again.
(() => {
  const SELECTOR = '.kodza-hero-exit';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  const GLIDE = 'cubic-bezier(0.6, 0, 0.1, 1)'; // slow start, long settle
  const SOFT = 'cubic-bezier(0.25, 1, 0.5, 1)';
  const TRAVEL = 'cubic-bezier(0.45, 0, 0.55, 1)'; // the moves on the scroll: gentle, a mouse wheel goes by notches

  const decoded = (root) => Promise.all([...root.querySelectorAll('img')].map((img) => img.decode().catch(() => {})));

  // An easing curve as a function, to shape several edges of one clip-path apart
  const bezier = (x1, y1, x2, y2) => (t) => {
    let u = t;
    for (let i = 0; i < 8; i++) {
      const x = 3 * (1 - u) ** 2 * u * x1 + 3 * (1 - u) * u ** 2 * x2 + u ** 3 - t;
      const dx = 3 * (1 - u) ** 2 * x1 + 6 * (1 - u) * u * (x2 - x1) + 3 * u ** 2 * (1 - x2);
      if (Math.abs(x) < 1e-5 || !dx) break;
      u = Math.min(1, Math.max(0, u - x / dx));
    }
    return 3 * (1 - u) ** 2 * u * y1 + 3 * (1 - u) * u ** 2 * y2 + u ** 3;
  };
  const travel = bezier(0.45, 0, 0.55, 1);
  const part = (t, from, to) => travel(Math.min(1, Math.max(0, (t - from) / (to - from))));

  // ---------- Scroll engine (begin) ----------
  // The same block in every hero that plays on scroll: copy it as is, write only the timeline.
  // `root` is a tall track and `scene` sticks inside it (position: sticky, in the CSS); the
  // progress runs from 0, the scene just pinned, to 1, about to unpin. `timeline()` returns
  // tracks, [element, keyframes, from, to] with from and to in progress; each becomes a paused
  // Web Animation whose time follows the scroll, smoothed by a requestAnimationFrame loop that
  // sleeps once it has caught up. The tracks are built again when `scene` or an element of
  // `watch` changes size, so `timeline()` measures there.
  function scrub(root, scene, signal, timeline, watch = []) {
    const SPAN = 1000;
    let tracks = [];
    let live = false;
    let now = 0;
    let target = 0;
    let frame = 0;
    let last = 0;
    const geometry = () => {
      const box = root.getBoundingClientRect();
      return {
        top: box.top,
        scale: box.height / root.offsetHeight || 1, // a parent scaled by transform
        run: root.offsetHeight - scene.offsetHeight,
        stick: parseFloat(getComputedStyle(scene).top) || 0,
      };
    };
    const progress = () => {
      const { top, scale, run, stick } = geometry();
      return run > 0 ? Math.min(1, Math.max(0, (stick - top / scale) / run)) : 0;
    };
    const seek = () => tracks.forEach((a) => { a.currentTime = now * SPAN; });
    const tick = (time) => {
      const dt = last ? Math.min(time - last, 64) : 16;
      last = time;
      now += (target - now) * (1 - Math.exp(-dt / 70));
      if (Math.abs(target - now) < 0.0004) now = target;
      seek();
      frame = now === target ? 0 : requestAnimationFrame(tick);
      if (!frame) last = 0;
    };
    const update = () => {
      if (!live) return;
      target = progress();
      if (!frame) frame = requestAnimationFrame(tick);
    };
    const clear = () => {
      tracks.forEach((a) => a.cancel());
      tracks = [];
    };
    const build = () => {
      clear();
      if (!live) return;
      tracks = timeline().filter(([el]) => el).map(([el, keyframes, from, to]) => {
        const a = el.animate(keyframes, { duration: (to - from) * SPAN, delay: from * SPAN, endDelay: (1 - to) * SPAN, fill: 'both' });
        a.pause();
        return a;
      });
      seek();
      update();
    };
    const stop = () => {
      live = false;
      cancelAnimationFrame(frame);
      frame = last = now = 0;
      clear();
    };
    // Scrolls the page so the progress is at least `p` (a focused control must show)
    const reveal = (p) => {
      const { top, scale, run, stick } = geometry();
      if (run > 0 && progress() < p) window.scrollBy(0, top - (stick - p * run) * scale);
    };

    document.addEventListener('scroll', update, { passive: true, capture: true, signal });
    window.addEventListener('resize', update, { passive: true, signal });
    let resized = 0;
    const ro = new ResizeObserver(() => {
      cancelAnimationFrame(resized);
      resized = requestAnimationFrame(build);
    });
    [scene, ...watch].forEach((el) => el && ro.observe(el));
    signal.addEventListener('abort', () => {
      ro.disconnect();
      cancelAnimationFrame(resized);
      stop();
    });
    return {
      start() {
        live = true;
        build();
      },
      stop,
      progress,
      reveal,
    };
  }
  // ---------- Scroll engine (end) ----------

  // One instance, with its own state: two copies on a page never interfere. Everything it
  // starts is tied to `signal` (listeners get { signal }, observers and timers stop on its
  // 'abort' event), so kodza:destroy stops it all.
  function mount(root, signal) {
    if (reduceMotion) return root.classList.add('is-shown');
    const q = (s) => root.querySelector(s);
    const track = q('.kodza-hero-exit__track');
    const scene = q('.kodza-hero-exit__scene');
    const slot = q('.kodza-hero-exit__slot');
    const win = q('.kodza-hero-exit__window');
    const img = q('.kodza-hero-exit__window img');
    const card = q('.kodza-hero-exit__card');
    const lines = [...root.querySelectorAll('.kodza-hero-exit__line')];
    const above = (el) => el.compareDocumentPosition(slot) & Node.DOCUMENT_POSITION_FOLLOWING;

    // A box in the scene's own pixels, whatever scales the page
    const within = (el) => {
      const box = scene.getBoundingClientRect();
      const k = box.width / scene.offsetWidth || 1;
      const r = el.getBoundingClientRect();
      return { x: (r.left - box.left) / k, y: (r.top - box.top) / k, w: r.width / k, h: r.height / k };
    };
    // The picture covers the whole scene; the window cuts it to nothing at the seam between the
    // lines (the slot), opens there as wide as the scene, then closes in on the card.
    const measure = () => {
      const W = scene.clientWidth;
      const H = scene.clientHeight;
      const seam = within(slot).y;
      const to = within(card);
      const round = parseFloat(getComputedStyle(card).borderTopLeftRadius) || 0;
      // t from 0 (shut) to 1 (the card): the height opens first, the sides follow. Under 40px
      // tall the band fades with its height, so it never shrinks to a hairline across the screen
      const shape = (t) => {
        const v = part(t, 0, 0.78);
        const h = part(t, 0.3, 1);
        const top = seam + (to.y - seam) * v;
        const bottom = H - seam - (to.y + to.h - seam) * v;
        return {
          clipPath: `inset(${top}px ${(W - to.x - to.w) * h}px ${bottom}px ${to.x * h}px round ${round * h}px)`,
          opacity: Math.min(1, (to.h * v) / 40),
        };
      };
      win.style.clipPath = shape(0).clipPath;
      return { H, shape };
    };

    // The scroll part, in progress. The track is one screen longer than the hold: from `cover`
    // on, the next section slides over the scene, and the card sinks under it.
    const timeline = () => {
      const { H, shape } = measure();
      const run = track.offsetHeight - scene.offsetHeight;
      const cover = run > 0 ? Math.max(0.2, (run - scene.offsetHeight) / run) : 1;
      // Everything above the seam rises by one distance, everything below drops by one: the
      // small print leaves a little ahead of the lines and never gets caught up
      const words = [q('.kodza-hero-exit__eyebrow'), ...lines, q('.kodza-hero-exit__foot'), q('.kodza-hero-exit__hint')].filter(Boolean);
      const lift = Math.max(...words.filter(above).map((el) => within(el)).map(({ y, h }) => y + h + 24));
      const drop = Math.max(...words.filter((el) => !above(el)).map((el) => H - within(el).y + 24));
      const away = (el, start, end) => [el, [
        { transform: 'translateY(0px)', easing: TRAVEL },
        { transform: `translateY(${above(el) ? -lift : drop}px)` },
      ], start * cover, end * cover];
      return [
        // The lines part, the small print just ahead of them
        away(q('.kodza-hero-exit__eyebrow'), 0, 0.62),
        ...lines.map((line) => away(line, 0, 0.76)),
        away(q('.kodza-hero-exit__foot'), 0, 0.62),
        away(q('.kodza-hero-exit__hint'), 0, 0.4),
        // The picture opens in the gap they leave, settling from a slight zoom, then becomes a card
        [win, Array.from({ length: 41 }, (_, i) => shape(i / 40)), 0, 0.9 * cover],
        [img, [{ transform: 'scale(1.18)', easing: TRAVEL }, { transform: 'scale(1)' }], 0, 0.9 * cover],
        // It steps back, then sinks under the next section
        [win, [
          { transform: 'translateY(0px) scale(1)', easing: TRAVEL },
          { transform: 'translateY(0px) scale(0.94)', offset: (cover * 0.3) / (1 - cover * 0.7), easing: TRAVEL },
          { transform: 'translateY(-9%) scale(0.86)' },
        ], cover * 0.7, 1],
        [q('.kodza-hero-exit__shade'), [{ opacity: 0 }, { opacity: 0.45 }], cover * 0.9, 1],
      ];
    };
    const pin = scrub(track, scene, signal, timeline, [q('.kodza-hero-exit__title')]);

    let running = [];
    const stop = () => {
      running.forEach((a) => a.cancel());
      running = [];
    };
    const animate = (el, keyframes, options) => {
      if (el) running.push(el.animate(keyframes, { easing: GLIDE, fill: 'backwards', ...options }));
    };
    const rise = (el, delay, duration) => animate(el, [{ transform: 'translateY(105%)' }, { transform: 'none' }], { duration, delay });
    // Scrolling during the entrance hurries it, so the scroll takes over without a wait
    const hurry = () => {
      if (running.length && !root.classList.contains('is-live') && pin.progress() > 0) running.forEach((a) => a.updatePlaybackRate(4));
    };

    const play = async () => {
      await decoded(root);
      if (signal.aborted) return;
      stop();
      pin.stop();
      root.classList.remove('is-live');
      root.classList.add('is-shown');
      measure();
      rise(q('.kodza-hero-exit__eyebrow .kodza-hero-exit__rise'), 0, 1000);
      lines.forEach((l, i) => rise(l.querySelector(':scope > .kodza-hero-exit__rise'), 110 + i * 125, 1170));
      rise(q('.kodza-hero-exit__hint .kodza-hero-exit__rise'), 760, 1000);
      [q('.kodza-hero-exit__lead'), q('.kodza-hero-exit__actions')].forEach((el, i) => {
        animate(el, [{ opacity: 0, transform: 'translateY(20px)' }, { opacity: 1, transform: 'none' }], { duration: 900, delay: 700 + i * 110, easing: SOFT });
      });
      hurry();
      const entrance = running;
      Promise.all(entrance.map((a) => a.finished)).then(() => {
        if (entrance !== running || signal.aborted) return;
        root.classList.add('is-live');
        pin.start();
      }, () => {});
    };

    root.addEventListener('kodza:replay', play, { signal });
    document.addEventListener('scroll', hurry, { passive: true, capture: true, signal });
    // Tabbing back to a button scrolls back to where it shows: the hero, whole
    q('.kodza-hero-exit__foot').addEventListener('focusin', () => {
      if (pin.progress() <= 0) return;
      const box = root.getBoundingClientRect();
      const k = box.height / root.offsetHeight || 1;
      window.scrollBy(0, box.top - (parseFloat(getComputedStyle(scene).top) || 0) * k);
    }, { signal });
    signal.addEventListener('abort', stop);
    const io = new IntersectionObserver((entries) => {
      if (!entries.some((entry) => entry.isIntersecting)) return;
      io.disconnect();
      play();
    }, { rootMargin: '0px 0px -15% 0px' });
    signal.addEventListener('abort', () => io.disconnect());
    Promise.all([document.fonts?.ready, decoded(root)]).then(() => {
      if (!signal.aborted) io.observe(root);
    });
  }

  // Kodza lifecycle, the same in every component: `kodza:init` starts the instances inside
  // event.detail.root (the whole page by default), `kodza:destroy` stops them and puts their
  // markup back. For themes and apps that swap content without a page load.
  const instances = new WeakMap();
  const find = (scope = document) => [scope, ...scope.querySelectorAll(SELECTOR)].filter((el) => el.matches?.(SELECTOR));
  const init = (scope) => find(scope).forEach((root) => {
    if (root.classList.contains('is-ready')) return; // already running, maybe from another copy of this script
    const controller = new AbortController();
    instances.set(root, { controller, html: root.innerHTML, attrs: [...root.attributes].map((a) => [a.name, a.value]) });
    mount(root, controller.signal);
    root.classList.add('is-ready');
  });
  const destroy = (scope) => find(scope).forEach((root) => {
    const instance = instances.get(root);
    if (!instance) return;
    instances.delete(root);
    instance.controller.abort();
    [...root.attributes].forEach((a) => root.removeAttribute(a.name));
    instance.attrs.forEach(([name, value]) => root.setAttribute(name, value));
    root.innerHTML = instance.html;
  });
  document.addEventListener('kodza:init', (event) => init(event.detail?.root));
  document.addEventListener('kodza:destroy', (event) => destroy(event.detail?.root));
  init();
  // Loaded in <head>, the script runs before the markup exists: once more when it is parsed
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', () => init(), { once: true });
})();

'use client';
// Kodza — Hero Exit, for React. From https://kodza.dev/components/hero-exit/
// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Next to this file: hero-exit.css and hero-exit.js, the component's CSS and JS from Kodza, as they are.
// Yours to edit: the markup is plain JSX below.
// The script changes this markup once React has rendered it (it adds layers, splits text, moves
// nodes), so React must not patch it afterwards. When a prop changes, the key gives React a fresh
// element: kodza:destroy stops the script on the old one, kodza:init starts it on the new one.
import { useRef, useEffect, type ComponentPropsWithoutRef, type ComponentRef, type CSSProperties } from 'react';
import './hero-exit.css';

export type HeroExitProps = Omit<ComponentPropsWithoutRef<'section'>, "children" | "vars"> & {
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: #0a0a0a */
    "--kz-hero-exit-ink"?: string | number;
    /** default: #f2f2f0 */
    "--kz-hero-exit-paper"?: string | number;
    /** default: rgba(10, 10, 10, 0.62) */
    "--kz-hero-exit-dim"?: string | number;
    /** default: rgba(10, 10, 10, 0.6) */
    "--kz-hero-exit-faint"?: string | number;
    /** default: rgba(10, 10, 10, 0.07) */
    "--kz-hero-exit-soft"?: string | number;
    /** default: transparent */
    "--kz-hero-exit-bg"?: string | number;
    /** the card darkens toward it as the next section covers it — default: #0a0a0a */
    "--kz-hero-exit-shade"?: string | number;
    /** default: 1240px */
    "--kz-hero-exit-width"?: string | number;
    /** default: clamp(16px, 4vw, 40px) */
    "--kz-hero-exit-gutter"?: string | number;
    /** default: clamp(20px, 2.6vw, 36px) */
    "--kz-hero-exit-pad-y"?: string | number;
    /** the title lines — default: clamp(44px, min(14cqi, 17svh), 168px) */
    "--kz-hero-exit-size"?: string | number;
    /** the part of the picture the card shows — default: 50% 42% */
    "--kz-hero-exit-focus"?: string | number;
    /** the card's height, as a share of the screen — default: 0.74 */
    "--kz-hero-exit-card"?: string | number;
    /** the card's width / height — default: 0.8 */
    "--kz-hero-exit-ratio"?: string | number;
    /** default: 16px */
    "--kz-hero-exit-radius"?: string | number;
    /** height of a fixed site header: the scene pins under it — default: 0px */
    "--kz-hero-exit-top"?: string | number;
    /** how long the scene holds before the next section comes — default: 180svh */
    "--kz-hero-exit-distance"?: string | number;
    /** default: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace */
    "--kz-hero-exit-mono"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-hero-exit-ease"?: string | number;
  };
  className?: string;
};

export function HeroExit({ vars, className, style, ...rest }: HeroExitProps) {
  const ref = useRef<ComponentRef<'section'>>(null);
  const classes = ["kodza-hero-exit", className].filter(Boolean).join(' ');
  // Everything the markup is made of: when it changes, React gets a fresh element (see the top)
  const key = JSON.stringify([classes, vars, style, rest]);

  // Starts the script on this element once React has rendered it, stops it when it goes
  useEffect(() => {
    const root = ref.current;
    let live = true;
    // @ts-ignore: a plain script, no types to find
    import('./hero-exit.js').then(() => {
      if (live) document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root } }));
    });
    return () => {
      live = false;
      document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } }));
    };
  }, [key]);

  return (
    <section key={key} {...rest} className={classes} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-hero-exit__track">
        <div className="kodza-hero-exit__scene">
          <div className="kodza-hero-exit__inner">
            <p className="kodza-hero-exit__eyebrow">
              <span className="kodza-hero-exit__rise">Launch week · day one</span>
            </p>
            <h1 className="kodza-hero-exit__title">
              <span className="kodza-hero-exit__line">
                <span className="kodza-hero-exit__rise">Enter big.</span>
              </span>
              {' '}
              <span className="kodza-hero-exit__slot" aria-hidden="true" />
              {' '}
              <span className="kodza-hero-exit__line">
                <span className="kodza-hero-exit__rise">Leave clean.</span>
              </span>
            </h1>
            <div className="kodza-hero-exit__foot">
              <p className="kodza-hero-exit__lead">The title parts, the picture opens, the next section walks on. One paste, no library.</p>
              <div className="kodza-hero-exit__actions">
                <a className="kodza-hero-exit__button kodza-hero-exit__button--ink" href="#">Get the code<svg className="kodza-hero-exit__arrow" viewBox="0 0 16 16" aria-hidden="true"> <path d="M2.5 8h10.5M9 3.5 13.5 8 9 12.5" /> </svg></a>
                {' '}
                <a className="kodza-hero-exit__button kodza-hero-exit__button--soft" href="#">See it live</a>
              </div>
            </div>
            <p className="kodza-hero-exit__hint" aria-hidden="true">
              <span className="kodza-hero-exit__rise"><span className="kodza-hero-exit__cue" />Scroll to exit</span>
            </p>
          </div>
          <div className="kodza-hero-exit__media">
            <div className="kodza-hero-exit__window">
              <img src="https://kodza.dev/media/kz-arch-2400.webp" alt="A concrete wall with a round-topped doorway, sunlight pouring through it" width="2400" height="2400" />
              <div className="kodza-hero-exit__shade" />
            </div>
            <div className="kodza-hero-exit__card" />
          </div>
        </div>
      </div>
    </section>
  );
}