/* Scene04 - Image grid with text */
/* Scene container */
.scene04 {
  position: relative;
  width: 100vw;
  background-color: #000;
  overflow: hidden;
}

/* Section wrapper */
.scene04__section {
  position: relative;
  min-height: 60vh; /* Minimal scroll room */
  width: 100%;
}

/* First section - less scroll space needed */
.scene04__section:first-of-type + .scene04__section {
  min-height: 100vh;
}

/* Spacer - forces user to scroll before observer activates */
.scene04__spacer {
  height: 10vh;
  width: 100%;
  position: relative;
}

/* Sentinel element - observed by IntersectionObserver */
.scene04__sentinel {
  height: 1px;
  width: 100%;
  position: relative;
  background: transparent;
}

/* Content wrapper */
.scene04__content {
  position: relative;
  width: 100%;
  height: 100vh;
}

/* Black background overlay - covers Scene03 */
.scene04__background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #000;
  z-index: 399; /* Above Scene03 */
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.8s ease-out;
}

.scene04__background.visible {
  opacity: 1;
}

/* Text boxes - same style as previous scenes */
.scene04__text {
  position: fixed;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
  z-index: 401; /* Above background */
  
  padding: 1.5rem 2rem;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  border-radius: 8px;
  
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 1.5rem;
  font-weight: 300;
  color: white;
  text-align: center;
  line-height: 1.4;
  letter-spacing: 0.02em;
  
  max-width: 700px;
  
  /* Hidden / exit state */
  opacity: 0;
  transform: translateX(-50%) translateY(calc(-50% - 40px));
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  pointer-events: none;
}

/* Visible / entry state */
.scene04__text.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-50%);
}

/* First text positioning */
.scene04__text--1 {
  top: 40%;
}

/* Second text positioning - title above grid, with good spacing */
.scene04__text--2 {
  position: relative;
  top: auto;
  transform: none;
  margin-bottom: 2rem;
}

/* Text within reaction block should not be fixed */
.scene04__reaction-block .scene04__text {
  position: relative;
  top: auto;
  left: auto;
  transform: none;
  opacity: 1;
}

/* Reaction block - groups text and grid together */
.scene04__reaction-block {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 400;
  
  /* Hidden (default) */
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
}

/* Visible */
.scene04__reaction-block.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Exit - when visible class is removed, moves upward */
.scene04__reaction-block:not(.visible) {
  transform: translateY(-40px);
}

/* Image grid container - positioned lower with space from title text above */
.scene04__grid-container {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 2rem;
  max-width: 1200px;
  width: 90%;
  margin-top: 2rem;
}

/* Grid images */
.scene04__grid-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: 4px;
  aspect-ratio: 3/4;
  
  /* Start slightly zoomed out */
  transform: scale(0.95);
  transition: transform 0.8s ease-out;
}

/* Images scale to full size when reaction block is visible */
.scene04__reaction-block.visible .scene04__grid-image {
  transform: scale(1);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .scene04__grid-container {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
  }
}

@media (max-width: 768px) {
  .scene04__text {
    font-size: 1.2rem;
    padding: 1.2rem 1.5rem;
    max-width: 90%;
  }
  
  .scene04__text--1 {
    top: 35%;
  }
  
  .scene04__text--2 {
    top: 20%;
  }
  
  .scene04__grid-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
    padding: 1rem;
    width: 95%;
    top: 75%;
  }
}