/* Shared SVG pop background animation — used by all pages with #svgPopBg.svg-pop-bg */
#svgPopBg.svg-pop-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
#svgPopBg.svg-pop-bg .svg-pop-item {
  position: absolute;
  width: var(--size, 110px);
  height: var(--size, 110px);
  transform: translate(-50%, -50%);
  opacity: 0;
  filter: drop-shadow(0 4px 14px rgba(15, 106, 216, .13));
  animation: svg-pop-shared var(--dur, 7400ms) cubic-bezier(0.45, 0, 0.55, 1) forwards;
  contain: layout paint;
}
#svgPopBg.svg-pop-bg .svg-pop-item svg {
  width: 100%;
  height: 100%;
  display: block;
  opacity: .11;
}
@keyframes svg-pop-shared {
  0%   { opacity: 0;    transform: translate(-50%,-50%) scale(var(--s0, .88))  rotate(calc(var(--rot, 12deg) * -.4)); }
  12%  { opacity: .95; }
  48%  { opacity: .90;  transform: translate(-50%,-50%) scale(var(--s1, 1.04)) rotate(calc(var(--rot, 12deg) * .2)); }
  78%  { opacity: .88; }
  100% { opacity: 0;    transform: translate(-50%,-50%) scale(var(--s2, .96))  rotate(var(--rot, 12deg)); }
}
html[data-theme="dark"] #svgPopBg.svg-pop-bg .svg-pop-item {
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, .20));
}
html[data-theme="dark"] #svgPopBg.svg-pop-bg .svg-pop-item svg {
  filter: brightness(0) invert(1);
  opacity: .09;
}
@media (prefers-reduced-motion: reduce) { #svgPopBg.svg-pop-bg { display: none; } }
body > *:not(#svgPopBg):not(.glass-header) { position: relative; z-index: 1; }