/* =====================================================
   STUDIO CREATIVE — shared-effects.css
   Grain texture, perspective grid, glow dividers
   Shared across all sub-pages
   ===================================================== */

/* Ensure body supports pseudo-elements */
body {
  position: relative;
  overflow-x: hidden;
}

/* ---- Perspective grid background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(600px) rotateX(25deg) scale(2);
  transform-origin: 50% 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ---- Grain texture overlay ---- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.028;
  pointer-events: none;
  z-index: 9000;
  animation: grain 0.4s steps(2) infinite;
}

@keyframes grain {
  0%,100% { transform: translate(0,0) }
  10% { transform: translate(-2%,-3%) }
  20% { transform: translate(3%,2%) }
  30% { transform: translate(-1%,4%) }
  40% { transform: translate(2%,-1%) }
  50% { transform: translate(-3%,2%) }
  60% { transform: translate(1%,-2%) }
  70% { transform: translate(-2%,3%) }
  80% { transform: translate(3%,-1%) }
  90% { transform: translate(-1%,2%) }
}

/* ---- Glow divider ---- */
.glow-divider {
  height: 1px;
  margin: 0;
  background: linear-gradient(90deg, transparent, #00d4ff, transparent);
  opacity: 0.25;
}