/* =============================================================================
   LAYOUT // 3D VIEWPORT PERSPECTIVE, ASYMMETRICAL GRID & OPTICAL BACKPLANES
   ============================================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
}

html, body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--space-void);
  color: var(--metal-platinum);
  font-family: var(--font-family-sans);
  position: fixed;
  inset: 0;
  text-rendering: geometricPrecision;
}

html { color-scheme: dark; }

::selection {
  background: rgba(0, 230, 255, 0.22);
  color: var(--light-specular);
}

button, input, textarea, select { font: inherit; }

/* 3D Perspective Deck Container */
.deck-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  perspective: 1200px;
  perspective-origin: 50% 48%;
  z-index: 10;
}

/* Individual Slide Shell */
.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: clamp(2rem, 5vw, 6rem);
  padding-left: clamp(5rem, 9vw, 11rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  z-index: 1;
  pointer-events: none;
  transform-style: preserve-3d;
}

/* 2-Column Asymmetrical Grid */
.slide-grid {
  display: grid;
  grid-template-columns: minmax(360px, 42vw) minmax(340px, 1fr);
  gap: clamp(2.5rem, 5vw, 6rem);
  align-items: center;
  width: 100%;
  max-width: 1540px;
  margin-inline: auto;
}

.content-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  max-width: 650px;
  position: relative;
  z-index: 10;
}

.artifact-column {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  min-width: 0;
  position: relative;
  z-index: 10;
}

/* Quiet optical pool behind the interactive artifact */
.artifact-column::before {
  content: "";
  position: absolute;
  width: 130%;
  aspect-ratio: 1.15;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(ellipse at 50% 44%, rgba(255, 255, 255, 0.038) 0%, rgba(255, 255, 255, 0.012) 31%, transparent 67%),
    radial-gradient(ellipse at 57% 64%, rgba(0, 230, 255, 0.018) 0%, transparent 57%);
  filter: blur(28px);
  opacity: 0.8;
  pointer-events: none;
  z-index: -1;
}

/* Typographic Scale & Specular Headers */
.section-eyebrow {
  font-family: var(--font-family-mono);
  font-size: var(--font-mono);
  letter-spacing: 0.22em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  opacity: 0.9;
}

.monolith-header {
  font-size: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.95;
  color: var(--light-specular);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: block;
}

.monolith-header .mask-reveal,
.monolith-header span {
  display: inline-block;
  background: linear-gradient(180deg, #FFFFFF 0%, #A8ABB8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.monolith-description {
  font-size: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  color: var(--metal-platinum);
  letter-spacing: -0.01em;
  margin-bottom: 2rem;
  max-width: 520px;
}

.spec-highlight-row {
  display: flex;
  gap: clamp(1.5rem, 3.6vw, 3.5rem);
  padding-top: 0.35rem;
}

.spec-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.spec-val {
  font-size: clamp(1.32rem, 1.75vw, 1.8rem);
  font-weight: 500;
  line-height: 1;
  color: var(--light-specular);
  letter-spacing: -0.03em;
}

.spec-lbl {
  font-family: var(--font-family-mono);
  color: var(--metal-titanium);
  font-size: 0.60rem;
  letter-spacing: 0.12em;
}

@media (max-width: 1080px) {
  .slide-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .artifact-column {
    display: none;
  }
  .slide {
    padding-left: 4.5rem;
    padding-right: 2rem;
  }
}