/* =============================================================================
   Scope — cinematic pinned chapter (sticky progress, no scroll lock)
   Markup: section.build.build--scope
   ============================================================================= */

.build.build--scope {
  padding-block: 0;
  border-top: 1px solid var(--color-hairline);
  --build-p: 0;
  /* Tunable desktop chapter length — constant; never mutated by JS */
  --scope-scroll-height: 360vh;
  /* Must stay visible — overflow clip on ancestors breaks position:sticky */
  overflow: visible;
}

.build--scope .build__track {
  position: relative;
}

.build--scope .build__sticky {
  position: relative;
}

.build--scope .build__stage {
  width: min(100% - (var(--gutter) * 2), var(--page-max));
  margin-inline: auto;
  padding-block: var(--section-y) var(--section-y-loose);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--grid-gutter);
  row-gap: var(--space-xl);
  align-content: start;
}

.build--scope .build__head {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--grid-gutter);
  row-gap: var(--space-l);
  align-items: end;
  margin: 0;
}

.build--scope .build__meta {
  grid-column: 1 / span 4;
  grid-row: 1;
  margin: 0;
  font-size: var(--text-meta);
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-quiet);
}

.build--scope .build__title {
  grid-column: 1 / span 6;
  grid-row: 2;
  margin: 0;
  display: flex;
  flex-direction: column;
  max-width: none;
  font-size: clamp(2rem, 1rem + 5vw, 5.25rem);
  line-height: 0.92;
  letter-spacing: var(--track-display);
  font-weight: 500;
  text-transform: uppercase;
}

.build--scope .build__title-line {
  display: block;
  white-space: nowrap;
}

.build--scope .build__lede {
  grid-column: 8 / span 5;
  grid-row: 2;
  margin: 0;
  font-size: var(--text-body-lg);
  line-height: var(--leading-snug);
  color: var(--color-fg-soft);
  max-width: 28ch;
  justify-self: end;
  padding-bottom: 0.2em;
}

.build--scope .build__context {
  grid-column: 1 / span 4;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.65rem;
  font-size: var(--text-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-quiet);
  min-height: 1.5em;
}

.build--scope .build__context-index {
  color: var(--color-fg);
  font-variant-numeric: tabular-nums;
}

.build--scope .build__context-sep {
  color: var(--color-stone);
}

.build--scope .build__context-name {
  color: var(--color-fg-soft);
}

.build--scope .build-world {
  grid-column: 5 / span 8;
  grid-row: 3 / span 2;
  justify-self: stretch;
  align-self: stretch;
  min-height: clamp(16rem, 42vh, 28rem);
}

.build-world__field {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: inherit;
  overflow: hidden;
  background: #0a0a09;
  border: 1px solid rgba(241, 240, 236, 0.1);
}

.build-world__grid {
  position: absolute;
  inset: 10% 8%;
  background-image:
    linear-gradient(rgba(241, 240, 236, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(241, 240, 236, 0.09) 1px, transparent 1px);
  background-size: 12.5% 12.5%;
  opacity: calc(clamp(0, var(--build-p) / 0.18, 1) * 0.85);
  transform: scale(calc(1.04 - (clamp(0, var(--build-p) / 0.25, 1) * 0.04)));
  transform-origin: center;
  will-change: opacity, transform;
}

.build-world__frame {
  position: absolute;
  inset: 14% 12% 18% 16%;
  border: 1px solid rgba(241, 240, 236, 0.22);
  opacity: clamp(0, (var(--build-p) - 0.04) / 0.18, 1);
  transform: scale(calc(1.03 - (clamp(0, (var(--build-p) - 0.04) / 0.22, 1) * 0.03)));
  will-change: opacity, transform;
}

.build-world__guides {
  position: absolute;
  inset: 14% 12% 18% 16%;
  pointer-events: none;
  opacity: clamp(0, (var(--build-p) - 0.42) / 0.2, 1);
}

.build-world__guides::before,
.build-world__guides::after {
  content: "";
  position: absolute;
  background: rgba(241, 240, 236, 0.28);
}

.build-world__guides::before {
  left: 32%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: scaleY(clamp(0.15, (var(--build-p) - 0.42) / 0.22, 1));
  transform-origin: top center;
}

.build-world__guides::after {
  top: 38%;
  left: 0;
  right: 0;
  height: 1px;
  transform: scaleX(clamp(0.15, (var(--build-p) - 0.48) / 0.22, 1));
  transform-origin: left center;
}

.build-world__plane {
  position: absolute;
  left: 18%;
  right: 28%;
  bottom: 22%;
  height: 34%;
  background: rgba(232, 228, 220, 0.12);
  box-shadow: inset 0 1px 0 rgba(241, 240, 236, 0.14);
  opacity: clamp(0, (var(--build-p) - 0.22) / 0.2, 1);
  transform: translate3d(0, calc((1 - clamp(0, (var(--build-p) - 0.22) / 0.22, 1)) * 0.8rem), 0);
  clip-path: inset(0 calc((1 - clamp(0, (var(--build-p) - 0.22) / 0.25, 1)) * 42%) 0 0);
  will-change: opacity, transform, clip-path;
}

.build-world__crop {
  position: absolute;
  top: 18%;
  right: 16%;
  width: min(26%, 7rem);
  aspect-ratio: 3 / 4;
  border: 1px solid rgba(241, 240, 236, 0.28);
  background: rgba(241, 240, 236, 0.08);
  opacity: clamp(0, (var(--build-p) - 0.28) / 0.2, 1);
  transform: translate3d(0, calc((1 - clamp(0, (var(--build-p) - 0.28) / 0.2, 1)) * 0.6rem), 0)
    scale(calc(0.94 + (clamp(0, (var(--build-p) - 0.28) / 0.25, 1) * 0.06)));
  will-change: opacity, transform;
}

.build-world__type {
  position: absolute;
  left: 20%;
  top: 22%;
  font-size: clamp(1.6rem, 1rem + 2vw, 2.6rem);
  line-height: 1;
  letter-spacing: var(--track-tight);
  font-weight: 500;
  color: rgba(241, 240, 236, 0.72);
  opacity: clamp(0, (var(--build-p) - 0.3) / 0.18, 1);
  transform: translate3d(calc((1 - clamp(0, (var(--build-p) - 0.3) / 0.2, 1)) * -0.5rem), 0, 0);
}

.build-world__blocks {
  position: absolute;
  left: 18%;
  right: 18%;
  bottom: 16%;
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.7fr;
  gap: 0.55rem;
  opacity: clamp(0, (var(--build-p) - 0.52) / 0.2, 1);
  transform: translate3d(0, calc((1 - clamp(0, (var(--build-p) - 0.52) / 0.2, 1)) * 0.55rem), 0);
}

.build-world__blocks span {
  display: block;
  height: 0.55rem;
  background: rgba(241, 240, 236, 0.18);
  border: 1px solid rgba(241, 240, 236, 0.16);
}

.build-world__blocks span:nth-child(2) {
  height: 0.85rem;
  margin-top: auto;
  background: rgba(241, 240, 236, 0.1);
}

.build-world__blocks span:nth-child(3) {
  height: 1.15rem;
  margin-top: auto;
  background: rgba(232, 228, 220, 0.22);
}

.build-world__resolve {
  position: absolute;
  inset: 12% 10% 14% 12%;
  pointer-events: none;
  border: 1px solid rgba(241, 240, 236, 0.34);
  box-shadow: inset 0 0 0 1px rgba(10, 10, 9, 0.35);
  opacity: clamp(0, (var(--build-p) - 0.72) / 0.22, 1);
  transform: scale(calc(1.02 - (clamp(0, (var(--build-p) - 0.72) / 0.22, 1) * 0.02)));
}

.build-world__grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: url("/assets/images/material-noise.svg");
  background-size: 180px 180px;
  mix-blend-mode: soft-light;
}

.build--scope .build__pillars {
  grid-column: 1 / span 4;
  grid-row: 4;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-hairline);
  align-self: end;
}

.build--scope .build__pillar {
  margin: 0;
  padding: var(--space-m) 0;
  border-right: none;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: var(--space-m);
  min-height: 0;
  opacity: 0.38;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.build--scope .build__pillar.is-active,
.build--scope .build__pillar.is-passed {
  opacity: 1;
}

.build--scope .build__pillar.is-active .build__name {
  color: var(--color-fg);
}

.build--scope .build__index {
  font-size: var(--text-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-stone);
  font-variant-numeric: tabular-nums;
  min-width: 2ch;
}

.build--scope .build__name {
  font-size: clamp(0.95rem, 0.9rem + 0.35vw, 1.15rem);
  line-height: var(--leading-tight);
  letter-spacing: var(--track-tight);
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-fg-soft);
}

.build--scope .build__close {
  grid-column: 5 / span 8;
  grid-row: 5;
  margin: var(--space-l) 0 0;
  font-size: var(--text-meta);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-quiet-strong);
  opacity: clamp(0, (var(--build-p) - 0.86) / 0.1, 1);
  transform: translate3d(0, calc((1 - clamp(0, (var(--build-p) - 0.86) / 0.1, 1)) * 0.35rem), 0);
}

/* Desktop pinned chapter — static geometry only */
@media (min-width: 720px) {
  .build--scope .build__track {
    height: var(--scope-scroll-height);
  }

  .build--scope .build__sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: stretch;
    /* clip (not hidden) — avoid creating a scroll container */
    overflow: clip;
  }

  .build--scope .build__stage {
    padding-block: clamp(4.5rem, 10vh, 6.5rem) clamp(2rem, 5vh, 3.5rem);
    min-height: 100%;
    box-sizing: border-box;
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  }

  .build--scope .build-world {
    min-height: 0;
    height: 100%;
  }
}

@media (max-width: 1023px) {
  .build--scope .build__title {
    grid-column: 1 / span 8;
  }

  .build--scope .build__lede {
    grid-column: 1 / span 8;
    grid-row: 3;
    justify-self: start;
  }

  .build--scope .build__context {
    grid-column: 1 / span 6;
  }

  .build--scope .build-world {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: clamp(15rem, 48vw, 22rem);
  }

  .build--scope .build__pillars {
    grid-column: 1 / -1;
    grid-row: auto;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .build--scope .build__pillar {
    flex: 1 1 40%;
    padding: var(--space-l) var(--space-m) var(--space-l) 0;
    border-right: 1px solid var(--color-hairline);
  }

  .build--scope .build__pillar:nth-child(2n) {
    padding-right: 0;
    border-right: none;
  }

  .build--scope .build__close {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

@media (max-width: 719px) {
  .build--scope .build__track {
    height: auto;
  }

  .build--scope .build__sticky {
    position: static;
    height: auto;
    overflow: visible;
  }

  .build--scope .build__stage {
    padding-block: var(--space-4xl) var(--section-y);
    row-gap: var(--space-2xl);
  }

  .build--scope .build__meta,
  .build--scope .build__title,
  .build--scope .build__lede,
  .build--scope .build__context,
  .build--scope .build-world,
  .build--scope .build__pillars,
  .build--scope .build__close {
    grid-column: 1 / -1;
    grid-row: auto;
  }

  .build--scope .build__title {
    font-size: clamp(2.1rem, 10vw, 3.1rem);
  }

  .build--scope .build__title-line {
    white-space: normal;
  }

  .build--scope .build__lede {
    max-width: 30ch;
    justify-self: start;
  }

  .build--scope .build-world {
    min-height: 18rem;
    aspect-ratio: 4 / 5;
  }

  .build--scope .build__pillars {
    flex-direction: column;
  }

  .build--scope .build__pillar {
    flex: none;
    width: 100%;
    border-right: none;
    padding: var(--space-m) 0;
  }

  .build--scope .build__pillar:last-child {
    border-bottom: none;
  }

  .build--scope .build__close {
    margin-top: 0;
  }
}

html[lang="hu"] .build--scope .build__title {
  max-width: min(100%, 18ch);
}

@media (max-width: 719px) {
  html[lang="hu"] .build--scope .build__title {
    max-width: min(100%, 16ch);
  }
}