.sphere-root {
  position: relative;
  width: 100%;
  height: 100%;
  --radius: 520px;
  --segments-x: 35;
  --segments-y: 35;
  --overlay-blur-color: #0A0A0F;
  --circ: calc(var(--radius) * 3.14);
  --rot-y: calc((360deg / var(--segments-x)) / 2);
  --rot-x: calc((360deg / var(--segments-y)) / 2);
  --item-width: calc(var(--circ) / var(--segments-x));
  --item-height: calc(var(--circ) / var(--segments-y));
}

.sphere-root * { box-sizing: border-box; }

.sphere,
.item,
.item__image { transform-style: preserve-3d; }

main.sphere-main {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  background: transparent;
  cursor: grab;
}
main.sphere-main.is-dragging { cursor: grabbing; }

.stage {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  perspective: calc(var(--radius) * 2);
  perspective-origin: 50% 50%;
  contain: layout paint size;
}

.sphere {
  transform: translateZ(calc(var(--radius) * -1));
  will-change: transform;
}

.overlay,
.overlay--blur {
  position: absolute;
  inset: 0;
  margin: auto;
  z-index: 3;
  pointer-events: none;
}

.overlay {
  background-image: radial-gradient(rgba(10, 10, 15, 0) 60%, var(--overlay-blur-color, #0A0A0F) 100%);
}

.overlay--blur {
  -webkit-mask-image: radial-gradient(rgba(10, 10, 15, 0) 68%, var(--overlay-blur-color, #0A0A0F) 92%);
  mask-image: radial-gradient(rgba(10, 10, 15, 0) 68%, var(--overlay-blur-color, #0A0A0F) 92%);
  backdrop-filter: blur(2px);
}

.item {
  width: calc(var(--item-width) * var(--item-size-x));
  height: calc(var(--item-height) * var(--item-size-y));
  position: absolute;
  top: -999px;
  bottom: -999px;
  left: -999px;
  right: -999px;
  margin: auto;
  transform-origin: 50% 50%;
  backface-visibility: hidden;
  transition: transform 300ms;
  transform: rotateY(calc(var(--rot-y) * (var(--offset-x) + ((var(--item-size-x) - 1) / 2)) + var(--rot-y-delta, 0deg)))
    rotateX(calc(var(--rot-x) * (var(--offset-y) - ((var(--item-size-y) - 1) / 2)) + var(--rot-x-delta, 0deg)))
    translateZ(var(--radius));
}

.item__image {
  position: absolute;
  display: block;
  inset: 8px;
  border-radius: 14px;
  background: transparent;
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  backface-visibility: hidden;
}

.edge-fade {
  position: absolute;
  left: 0;
  right: 0;
  height: 110px;
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(to bottom, transparent, var(--overlay-blur-color, #0A0A0F));
}
.edge-fade--top { top: 0; transform: rotate(180deg); }
.edge-fade--bottom { bottom: 0; }

/* Kinesina client-logo variant */
.dome-logos { height: 560px; }
.dome-logos .item__image {
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
}
.dome-logos .item__image.tile-dark {
  background: #0c0c14;
  border: 1px solid rgba(255, 255, 255, .08);
}
.dome-logos .item__image img {
  object-fit: contain;
  padding: 12%;
  filter: none;
}

@media (max-width: 768px) {
  .dome-logos { height: 400px; }
}