/* Random per-control camo: 7 stacks from /camo/stack_1.png … stack_7.png, or 7 SVG-tile variants */

.camo-ui-root .btn,
.camo-ui-root .tab,
.camo-ui-root label.btn-file {
  position: relative;
  z-index: 0;
  overflow: hidden;
}

.camo-ui-root .btn::before,
.camo-ui-root .tab::before,
.camo-ui-root label.btn-file::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  pointer-events: none;
  background-repeat: repeat;
  background-image: url("../img/camo-tile.svg");
  transform: translateZ(0);
}

/* Stack 1–7: distinct look from same SVG (hue / size / position) when PNG not loaded */
.camo-ui-root .btn[data-camo-stack="1"]::before,
.camo-ui-root .tab[data-camo-stack="1"]::before,
.camo-ui-root label.btn-file[data-camo-stack="1"]::before {
  background-size: 182px 127px;
  background-position: 8% 22%;
  filter: hue-rotate(0deg) saturate(1.25) contrast(1.08);
}

.camo-ui-root .btn[data-camo-stack="2"]::before,
.camo-ui-root .tab[data-camo-stack="2"]::before,
.camo-ui-root label.btn-file[data-camo-stack="2"]::before {
  background-size: 210px 147px;
  background-position: 72% 64%;
  filter: hue-rotate(38deg) saturate(1.4) contrast(1.05);
}

.camo-ui-root .btn[data-camo-stack="3"]::before,
.camo-ui-root .tab[data-camo-stack="3"]::before,
.camo-ui-root label.btn-file[data-camo-stack="3"]::before {
  background-size: 168px 118px;
  background-position: 40% 88%;
  filter: hue-rotate(88deg) saturate(1.15) contrast(1.12);
}

.camo-ui-root .btn[data-camo-stack="4"]::before,
.camo-ui-root .tab[data-camo-stack="4"]::before,
.camo-ui-root label.btn-file[data-camo-stack="4"]::before {
  background-size: 228px 160px;
  background-position: 55% 12%;
  filter: hue-rotate(142deg) saturate(1.32) contrast(1.06);
}

.camo-ui-root .btn[data-camo-stack="5"]::before,
.camo-ui-root .tab[data-camo-stack="5"]::before,
.camo-ui-root label.btn-file[data-camo-stack="5"]::before {
  background-size: 196px 137px;
  background-position: 20% 48%;
  filter: hue-rotate(198deg) saturate(1.2) contrast(1.1);
}

.camo-ui-root .btn[data-camo-stack="6"]::before,
.camo-ui-root .tab[data-camo-stack="6"]::before,
.camo-ui-root label.btn-file[data-camo-stack="6"]::before {
  background-size: 176px 123px;
  background-position: 92% 35%;
  filter: hue-rotate(252deg) saturate(1.38) contrast(1.04);
}

.camo-ui-root .btn[data-camo-stack="7"]::before,
.camo-ui-root .tab[data-camo-stack="7"]::before,
.camo-ui-root label.btn-file[data-camo-stack="7"]::before {
  background-size: 204px 143px;
  background-position: 33% 76%;
  filter: hue-rotate(308deg) saturate(1.22) contrast(1.09);
}

/* PNG textures: URLs set by camo-buttons.js as --camo-bg-N (same host or data-samsel-api-base tunnel) */
html.camo-stack-1-ok .camo-ui-root .btn[data-camo-stack="1"]::before,
html.camo-stack-1-ok .camo-ui-root .tab[data-camo-stack="1"]::before,
html.camo-stack-1-ok .camo-ui-root label.btn-file[data-camo-stack="1"]::before {
  background-image: var(--camo-bg-1);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-2-ok .camo-ui-root .btn[data-camo-stack="2"]::before,
html.camo-stack-2-ok .camo-ui-root .tab[data-camo-stack="2"]::before,
html.camo-stack-2-ok .camo-ui-root label.btn-file[data-camo-stack="2"]::before {
  background-image: var(--camo-bg-2);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-3-ok .camo-ui-root .btn[data-camo-stack="3"]::before,
html.camo-stack-3-ok .camo-ui-root .tab[data-camo-stack="3"]::before,
html.camo-stack-3-ok .camo-ui-root label.btn-file[data-camo-stack="3"]::before {
  background-image: var(--camo-bg-3);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-4-ok .camo-ui-root .btn[data-camo-stack="4"]::before,
html.camo-stack-4-ok .camo-ui-root .tab[data-camo-stack="4"]::before,
html.camo-stack-4-ok .camo-ui-root label.btn-file[data-camo-stack="4"]::before {
  background-image: var(--camo-bg-4);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-5-ok .camo-ui-root .btn[data-camo-stack="5"]::before,
html.camo-stack-5-ok .camo-ui-root .tab[data-camo-stack="5"]::before,
html.camo-stack-5-ok .camo-ui-root label.btn-file[data-camo-stack="5"]::before {
  background-image: var(--camo-bg-5);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-6-ok .camo-ui-root .btn[data-camo-stack="6"]::before,
html.camo-stack-6-ok .camo-ui-root .tab[data-camo-stack="6"]::before,
html.camo-stack-6-ok .camo-ui-root label.btn-file[data-camo-stack="6"]::before {
  background-image: var(--camo-bg-6);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

html.camo-stack-7-ok .camo-ui-root .btn[data-camo-stack="7"]::before,
html.camo-stack-7-ok .camo-ui-root .tab[data-camo-stack="7"]::before,
html.camo-stack-7-ok .camo-ui-root label.btn-file[data-camo-stack="7"]::before {
  background-image: var(--camo-bg-7);
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.05);
}

@media (prefers-reduced-motion: reduce) {
  .camo-ui-root .btn::before,
  .camo-ui-root .tab::before,
  .camo-ui-root label.btn-file::before {
    filter: none !important;
  }
}