/* =============================================================================
   Emergence — opening world (Phase 3)
   BLACK → SIGNAL → MATERIAL → BRAND → TYPE → WORLD
   Correction pass: brand integrity, rail alignment, material presence, contrast
   ============================================================================= */

/*
  is-emerging is a visual lifecycle marker only.
  Never lock document scroll or pointer events here —
  interaction must stay available while the reveal runs.
*/
body.is-emerging {
  overflow: visible;
  height: auto;
}

body.is-emerged {
  overflow: visible;
  height: auto;
}

.emergence {
  --emergence-rail: 1;
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--color-bg);
  overflow: clip;
  isolation: isolate;
}

.emergence__void {
  position: absolute;
  inset: 0;
  background: var(--color-bg);
  z-index: var(--z-base);
  pointer-events: none;
  transition: opacity var(--duration-glacial) var(--ease-out);
}

/* --- Material world (behind type; type may cross its edge deliberately) --- */
.emergence__signal {
  position: absolute;
  z-index: 1;
  top: 0;
  right: 0;
  width: min(32vw, 28rem);
  height: 100%;
  pointer-events: none;
  clip-path: inset(0 0 0 100%);
  opacity: 0;
  transform: translate3d(2.5%, 0, 0);
  transition:
    clip-path var(--duration-glacial) var(--ease-reveal),
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-glacial) var(--ease-reveal);
}

.emergence__material {
  position: absolute;
  inset: 7vh 0 10vh auto;
  width: 100%;
  overflow: hidden;
  border-left: 1px solid rgba(241, 240, 236, 0.38);
  box-shadow:
    -28px 0 60px rgba(0, 0, 0, 0.45),
    inset 1px 0 0 rgba(241, 240, 236, 0.1);
}

.emergence__material-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Architectural fragment: hold the recess + daylight cut */
  object-position: 52% 40%;
  transform: scale(1.03);
  filter: saturate(0.55) contrast(1.08) brightness(0.97);
}

.emergence__material-grain {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/material-noise.svg");
  background-size: 140px 140px;
  opacity: 0.1;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.emergence__material-shade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      90deg,
      rgba(241, 240, 236, 0.07) 0%,
      transparent 14%
    ),
    linear-gradient(
      180deg,
      rgba(241, 240, 236, 0.12) 0%,
      transparent 24%,
      rgba(11, 11, 10, 0.22) 100%
    );
}

/* --- Editorial type (above material so brand glyphs stay intact) --- */
.emergence__grid {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--grid-gutter);
  width: min(100% - (var(--gutter) * 2), var(--page-max));
  margin-inline: auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding-block: clamp(5.5rem, 12vh, 8rem) var(--space-3xl);
  align-content: center;
}

/* One shared left rail for meta / brand / promise */
.emergence__copy {
  grid-column: 1 / span 10;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 100%;
}

.emergence__meta {
  margin: 0 0 var(--space-xl);
  font-size: var(--text-meta);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-quiet);
  opacity: 0;
  transform: translate3d(0, 0.5rem, 0);
  transition:
    opacity var(--duration-slow) var(--ease-reveal),
    transform var(--duration-slow) var(--ease-reveal);
}

.emergence__brand {
  margin: 0;
  font-size: clamp(2.35rem, 0.7rem + 6.5vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-fg);
  max-width: none;
  overflow: visible;
}

.emergence__brand-line {
  display: inline-block;
  white-space: nowrap;
  clip-path: inset(0 0 100% 0);
  opacity: 0;
  transform: translate3d(0, 8%, 0);
  transition:
    clip-path var(--duration-glacial) var(--ease-reveal),
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-glacial) var(--ease-reveal);
  /* Keep terminal letters readable when they sit on the material */
  -webkit-text-stroke: 0.5px rgba(11, 11, 10, 0.25);
  paint-order: stroke fill;
  text-shadow:
    0 0 0.5px rgba(241, 240, 236, 0.35),
    -2px 0 12px rgba(11, 11, 10, 0.55),
    2px 0 16px rgba(11, 11, 10, 0.4);
}

.emergence__statement {
  margin: clamp(1.75rem, 4vh, 3rem) 0 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.12em;
  padding: 0;
  font-size: clamp(1.55rem, 1.1rem + 2.3vw, 2.7rem);
  line-height: 1.2;
  letter-spacing: -0.022em;
  font-weight: 500;
  color: var(--color-fg-soft);
  max-width: 19ch;
}

.emergence__line {
  display: block;
  clip-path: inset(0 0 100% 0);
  opacity: 0;
  transform: translate3d(0, 6%, 0);
  transition:
    clip-path var(--duration-glacial) var(--ease-reveal),
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-glacial) var(--ease-reveal);
}

.emergence__line:nth-child(2) {
  transition-delay: 0ms;
}

.emergence__cta {
  display: inline-flex;
  align-items: center;
  margin-top: clamp(1.5rem, 3.5vh, 2.25rem);
  font-size: var(--text-meta);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-bg);
  background: var(--color-fg);
  padding: 0.95rem 1.4rem;
  border: 1px solid var(--color-fg);
  opacity: 0;
  transform: translate3d(0, 0.4rem, 0);
  pointer-events: none;
  transition:
    opacity var(--duration-reveal) var(--ease-out),
    transform var(--duration-reveal) var(--ease-reveal),
    color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out),
    letter-spacing var(--duration-fast) var(--ease-out);
}

.emergence__cta:active {
  transform: scale(0.97);
}

.emergence__cta:focus-visible {
  outline-offset: 4px;
}

@media (hover: hover) and (pointer: fine) {
  .emergence__cta:hover {
    color: var(--color-fg);
    background: transparent;
    letter-spacing: 0.18em;
  }
}

/* --- Stage choreography (unchanged rhythm) --- */
.emergence[data-stage="1"] .emergence__signal,
.emergence[data-stage="2"] .emergence__signal,
.emergence[data-stage="3"] .emergence__signal,
.emergence[data-stage="4"] .emergence__signal {
  clip-path: inset(0 0 0 0);
  opacity: 1;
  transform: none;
}

.emergence[data-stage="2"] .emergence__meta,
.emergence[data-stage="3"] .emergence__meta,
.emergence[data-stage="4"] .emergence__meta {
  opacity: 1;
  transform: none;
}

.emergence[data-stage="2"] .emergence__brand-line,
.emergence[data-stage="3"] .emergence__brand-line,
.emergence[data-stage="4"] .emergence__brand-line {
  clip-path: inset(0 0 0 0);
  opacity: 1;
  transform: none;
}

.emergence[data-stage="3"] .emergence__line,
.emergence[data-stage="4"] .emergence__line {
  clip-path: inset(0 0 0 0);
  opacity: 1;
  transform: none;
}

.emergence[data-stage="3"] .emergence__line:nth-child(2),
.emergence[data-stage="4"] .emergence__line:nth-child(2) {
  transition-delay: 180ms;
}

.emergence[data-stage="4"] .emergence__cta {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  transition-delay: 220ms;
}

.emergence[data-stage="4"] .emergence__void {
  opacity: 0;
}

.emergence[data-stage="4"] .emergence__signal {
  transform: translate3d(0, 0, 0);
}

.emergence[data-stage="4"] .emergence__material {
  transform: translate3d(0, 0, 0);
}

/* --- Mobile: material as lower band; type unbroken --- */
@media (max-width: 719px) {
  .emergence {
    min-height: 100svh;
  }

  .emergence__signal {
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    height: min(38vh, 18rem);
    transform: translate3d(0, 6%, 0);
    z-index: var(--z-content);
  }

  .emergence__material {
    inset: 0;
    border-left: 0;
    border-top: 1px solid rgba(241, 240, 236, 0.28);
    box-shadow: 0 -18px 40px rgba(0, 0, 0, 0.35);
  }

  .emergence__material-photo {
    object-position: 48% 32%;
  }

  .emergence__grid {
    align-content: start;
    padding-top: clamp(5.25rem, 16vh, 7rem);
    padding-bottom: calc(min(38vh, 18rem) + var(--space-2xl));
  }

  .emergence__copy {
    grid-column: 1 / -1;
  }

  .emergence__meta {
    margin-bottom: var(--space-l);
  }

  .emergence__brand {
    font-size: clamp(2.05rem, 9.5vw, 3.1rem);
  }

  .emergence__brand-line {
    white-space: nowrap;
    max-width: none;
    text-shadow: none;
  }

  .emergence__statement {
    margin-top: var(--space-xl);
    font-size: clamp(1.3rem, 5.4vw, 1.7rem);
    max-width: 15ch;
  }
}

@media (min-width: 720px) and (max-width: 1023px) {
  .emergence__signal {
    width: min(32vw, 22rem);
  }

  .emergence__copy {
    grid-column: 1 / span 8;
  }

  .emergence__brand {
    font-size: clamp(2.8rem, 7.2vw, 5rem);
  }
}

@media (min-width: 1440px) {
  .emergence__signal {
    width: min(32vw, 34rem);
  }

  .emergence__copy {
    grid-column: 1 / span 9;
  }
}