/* ==============================================================
   nv-3d-scroll.css
   Effets 3D au scroll pour Notre Vision
   - Polaroids: rotate-in 3D au scroll
   - Mega chiffres: émergent de la profondeur
   - Hero: parallaxe Z
   - Statement: lift au scroll
   - Background: papiers flottants en parallaxe Z
   ============================================================== */

/* ====== Stage globale: perspective 3D sur tout ====== */
.nv-art.v3 {
  perspective: 1800px;
  perspective-origin: 50% 35%;
  transform-style: preserve-3d;
}

/* ====== HERO — letter-by-letter cinematic reveal ====== */
.v3-hero-title {
  transform-style: preserve-3d;
  perspective: 1200px;
}
.nv3d-char {
  display: inline-block;
  transform-style: preserve-3d;
  opacity: 0;
  transform:
    translate3d(var(--cx, 0px), var(--cy, -80px), var(--cz, -400px))
    rotateX(var(--rx, 35deg))
    rotateY(var(--ry, -25deg))
    rotateZ(var(--rz, -8deg));
  filter: blur(10px);
  animation: nv3d-char-settle 1.2s cubic-bezier(0.2, 0.9, 0.25, 1) forwards;
  animation-delay: calc(var(--i, 0) * 40ms + 100ms);
  will-change: transform, opacity, filter;
}
.nv3d-char.space { width: 0.28em; }
@keyframes nv3d-char-settle {
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0) rotateX(0) rotateY(0) rotateZ(0);
    filter: blur(0);
  }
}
@keyframes nv3d-hero-emerge {
  from {
    opacity: 0;
    transform: translateZ(-400px) translateY(60px) rotateX(8deg);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateZ(0) translateY(0) rotateX(0);
    filter: blur(0);
  }
}
.v3-hero-sub {
  animation: nv3d-hero-emerge 1.4s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 1.1s;
}

/* ====== MEGA — chiffres qui émergent de la profondeur ======
   Modern browsers (Chrome 115+, Safari 17.4+) get scroll-driven animation.
   Older browsers see a clean entry via IntersectionObserver (.in-view class). */
.v3-mega-num {
  transform-origin: 50% 50%;
  transform-style: preserve-3d;
  will-change: transform, opacity, filter;
}

/* Default state — far away & faded */
.v3-mega-num {
  opacity: 0;
  transform: translateZ(-700px) rotateX(-15deg) translateY(40px);
  filter: blur(6px) brightness(0.5);
  transition:
    opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.4s cubic-bezier(0.16, 1, 0.3, 1),
    filter 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.v3-mega-num.in-view {
  opacity: 1;
  transform: translateZ(0) rotateX(0) translateY(0);
  filter: blur(0) brightness(1);
}

/* Mega text — slide in from the side opposite to the number */
.v3-mega-text {
  opacity: 0;
  transform: translateZ(-200px) translateX(-30px);
  filter: blur(4px);
  transition:
    opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.2s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: 0.15s;
}
.v3-mega.alt .v3-mega-text {
  transform: translateZ(-200px) translateX(30px);
}
.v3-mega-text.in-view {
  opacity: 1;
  transform: translateZ(0) translateX(0);
  filter: blur(0);
}

/* ====== POLAROIDS — tilt 3D au scroll ====== */
.v3-polaroid-card {
  transform-origin: 50% 100%;
  transform-style: preserve-3d;
  will-change: transform, opacity, filter;
  opacity: 0;
  transform: translateZ(-400px) rotateY(25deg) rotateX(-15deg) translateY(60px);
  filter: blur(6px);
  transition:
    opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.6s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
/* Each polaroid gets a slightly different rotation for variety */
.v3-polaroid:nth-child(odd) .v3-polaroid-card {
  transform: translateZ(-400px) rotateY(-25deg) rotateX(-15deg) translateY(60px);
}
.v3-polaroid-card.in-view {
  opacity: 1;
  transform: translateZ(0) rotateY(0) rotateX(0) translateY(0);
  filter: blur(0);
}
/* Mouse hover lift — small 3D pop on hover */
.v3-polaroid-card:hover {
  transform: translateZ(40px) rotateY(-4deg) rotateX(2deg) translateY(-8px) !important;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* ====== STATEMENT — quote that lifts forward ====== */
.v3-statement-text {
  opacity: 0;
  transform: translateZ(-200px) scale(0.92);
  filter: blur(4px);
  transition:
    opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.4s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: 0.1s;
}
.v3-statement-text.in-view {
  opacity: 1;
  transform: translateZ(80px) scale(1);
  filter: blur(0);
}
.v3-statement-mark {
  opacity: 0;
  transform: translateZ(-100px) rotateZ(-20deg);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.v3-statement-mark.in-view {
  opacity: 0.4;
  transform: translateZ(40px) rotateZ(0);
}

/* ====== MANIFESTO / CTA — depth lift ====== */
.v3-manifesto-text,
.v3-cta h2 {
  opacity: 0;
  transform: translateZ(-300px) translateY(40px);
  filter: blur(5px);
  transition:
    opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1),
    transform 1.4s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.v3-manifesto-text.in-view,
.v3-cta h2.in-view {
  opacity: 1;
  transform: translateZ(0) translateY(0);
  filter: blur(0);
}

/* ====== Dust particles — floating motes in 3D space ====== */
.nv-3d-dust {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1400px;
}
.nv-3d-mote {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 245, 220, 0.9) 0%, rgba(255, 245, 220, 0) 70%);
  will-change: transform, opacity;
  animation: nv3d-drift var(--dur, 18s) linear infinite;
  animation-delay: var(--delay, 0s);
  opacity: 0;
}
@keyframes nv3d-drift {
  0% {
    opacity: 0;
    transform: translate3d(var(--x0, 0px), 110vh, var(--z, 0px));
  }
  10% { opacity: var(--op, 0.6); }
  90% { opacity: var(--op, 0.6); }
  100% {
    opacity: 0;
    transform: translate3d(var(--x1, 0px), -10vh, var(--z, 0px));
  }
}

/* ====== Counter — subtle glow when active ====== */
.v3-mega-num[data-counting] {
  text-shadow: 0 0 60px rgba(255, 200, 150, 0.25);
}

/* ====== Floating paper layer (decorative background depth) ====== */
.nv-3d-papers {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1200px;
}
.nv-3d-paper {
  position: absolute;
  width: 180px;
  height: 240px;
  background: linear-gradient(180deg, rgba(245, 242, 234, 0.04) 0%, rgba(245, 242, 234, 0.02) 100%);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 2px;
  box-shadow:
    0 30px 60px -20px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nv-3d-paper.p1 { top: 12%; left: 4%; transform: rotateY(-18deg) rotateZ(-8deg) translateZ(-200px); }
.nv-3d-paper.p2 { top: 38%; right: 6%; transform: rotateY(22deg) rotateZ(6deg) translateZ(-350px); }
.nv-3d-paper.p3 { top: 65%; left: 8%; transform: rotateY(-14deg) rotateZ(4deg) translateZ(-280px); }
.nv-3d-paper.p4 { top: 82%; right: 10%; transform: rotateY(18deg) rotateZ(-5deg) translateZ(-420px); }

/* Make sure content sits above papers */
.v3-hero,
.v3-mega,
.v3-polaroid,
.v3-statement,
.v3-pillars,
.v3-manifesto,
.v3-cta,
.v3-footer-mini {
  position: relative;
  z-index: 1;
}

/* ====== Pull-quote (mega number outline variant) — let it really feel huge ====== */
.v3-mega-num.outline {
  /* When in view, give it a slight float */
  animation: nv3d-num-float 6s ease-in-out infinite;
  animation-play-state: paused;
}
.v3-mega-num.outline.in-view {
  animation-play-state: running;
}
@keyframes nv3d-num-float {
  0%, 100% { transform: translateZ(0) rotateX(0) translateY(0); }
  50% { transform: translateZ(20px) rotateX(2deg) translateY(-8px); }
}

/* ====== Reduced motion fallback ====== */
@media (prefers-reduced-motion: reduce) {
  .v3-hero-title,
  .v3-hero-sub,
  .v3-mega-num,
  .v3-mega-text,
  .v3-polaroid-card,
  .v3-statement-text,
  .v3-statement-mark,
  .v3-manifesto-text,
  .v3-cta h2 {
    animation: none !important;
    transition: opacity 0.3s ease !important;
    transform: none !important;
    filter: none !important;
    opacity: 1 !important;
  }
  .nv-3d-papers { display: none; }
}