/* ============================================================
   3D effects — layered depth for the whole site.
   Used together with Tailwind utilities on every page.

   Quick reference:
     .scene / .persp-md / .persp-lg  -> perspective container
     .preserve-3d / .flat-3d         -> transform-style
     .backface-hidden                 -> backface-visibility
     .card3d                          -> CSS-only hover tilt card
     .tilt-3d                         -> JS mouse-follow tilt (js/3d.js)
     .animate-float-3d                -> floating 3D portrait layer
     .animate-float-3d-blob           -> floating depth blob
     .btn-3d                          -> 3D button push / pop
     .text-3d                         -> layered 3D text
     .gloss-edge                      -> glossy top edge on cards
   ============================================================ */

/* ---- Perspective wrappers ---- */
.scene,
.persp-sm,
.persp-md,
.persp-lg {
  perspective: 1000px;
  perspective-origin: 50% 30%;
}
.persp-md { perspective: 1400px; }
.persp-lg { perspective: 1800px; }

/* ---- transform-style ---- */
.preserve-3d { transform-style: preserve-3d; }
.flat-3d { transform-style: flat; }

/* ---- backface ---- */
.backface-hidden {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* ---- Base 3D card: resting state + CSS hover tilt ---- */
.card3d {
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1),
    box-shadow 0.45s ease;
  will-change: transform;
}
.card3d:hover,
.card3d:focus-visible {
  transform: perspective(1200px) rotateX(4deg) rotateY(-6deg) translateZ(28px);
}

/* ---- Interactive mouse-follow tilt (enhanced by js/3d.js) ---- */
.tilt-3d {
  transform-style: preserve-3d;
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out;
  will-change: transform;
  box-shadow: 0 10px 30px -14px rgba(15, 23, 42, 0.18);
}
.tilt-3d:hover {
  box-shadow: 0 26px 50px -18px rgba(139, 92, 246, 0.35),
    0 10px 20px -12px rgba(0, 0, 0, 0.18);
}
.tilt-3d[data-tilting] {
  transition: transform 0.06s linear, box-shadow 0.18s ease-out;
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg))
    translateZ(14px);
}

/* ---- Floating 3D layer (hero portrait, featured images) ---- */
@keyframes float3d {
  0%, 100% {
    transform: perspective(1200px) rotateY(-8deg) rotateX(4deg)
      translateZ(0) translateY(0);
  }
  50% {
    transform: perspective(1200px) rotateY(-3deg) rotateX(1deg)
      translateZ(48px) translateY(-16px);
  }
}
.animate-float-3d {
  animation: float3d 8s ease-in-out infinite !important;
  transform-style: preserve-3d;
  will-change: transform;
}

/* ---- Floating depth blob ---- */
@keyframes float3dBlob {
  0%, 100% {
    transform: translateZ(0) translateY(0) scale(1);
  }
  50% {
    transform: translateZ(70px) translateY(-26px) scale(1.1);
  }
}
.animate-float-3d-blob {
  animation: float3dBlob 9s ease-in-out infinite !important;
  will-change: transform;
}

/* ---- 3D buttons: pop on hover, press on click ---- */
.btn-3d {
  transform-style: preserve-3d;
  transition: transform 0.25s cubic-bezier(0.22, 0.61, 0.36, 1),
    box-shadow 0.25s ease;
  will-change: transform;
}
.btn-3d:hover {
  transform: perspective(800px) translateZ(20px) translateY(-3px);
}
.btn-3d:active {
  transform: perspective(800px) translateZ(0) translateY(1px) scale(0.97);
}

/* ---- Layered 3D text ---- */
.text-3d {
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4), 0 2px 0 rgba(0, 0, 0, 0.06),
    0 6px 14px rgba(0, 0, 0, 0.18);
}
.dark .text-3d {
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 2px 0 rgba(0, 0, 0, 0.5),
    0 6px 18px rgba(0, 0, 0, 0.5);
}

/* ---- Glossy top edge (light catching the top face of a card) ---- */
.gloss-edge { position: relative; }
.gloss-edge::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 0.25rem;
  border-radius: 9999px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.95), transparent);
  opacity: 0.85;
  pointer-events: none;
  z-index: 1;
}
.dark .gloss-edge::before {
  background: linear-gradient(90deg, transparent, rgba(167, 139, 250, 0.6), transparent);
}

/* ---- Modal pop (lightbox) ---- */
@keyframes modalPop {
  0% {
    transform: scale(0.92) translateZ(-80px);
    opacity: 0;
  }
  100% {
    transform: scale(1) translateZ(0);
    opacity: 1;
  }
}

/* ---- Respect reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .animate-float-3d,
  .animate-float-3d-blob,
  .card3d,
  .tilt-3d,
  .btn-3d {
    animation: none !important;
    transition: none !important;
  }
  .tilt-3d[data-tilting] {
    transform: none;
  }
}