/* Poincaré-7 — hyperbolic {3,7} disk in CSS
   Seven triangles meet at a vertex (impossible in Euclidean plane).
   Radial positions use tanh of ring index — the Poincaré metric. */

.p7 {
  position: absolute;
  inset: 0;
  transform: rotateX(calc((var(--py, 0.5) - 0.5) * -10deg)) rotateY(calc((var(--px, 0.5) - 0.5) * 12deg));
  transition: transform 180ms ease-out;
}

.p7__void {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 48%, #2a1210 0%, #100606 52%, #070303 100%);
}

.p7__disk {
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(80, 18, 12, 0.9), transparent 62%),
    repeating-radial-gradient(circle at 50% 50%, transparent 0 11px, rgba(240, 150, 90, 0.07) 11px 12px);
  box-shadow:
    inset 0 0 0 2px rgba(240, 194, 122, 0.45),
    inset 0 0 55px rgba(0, 0, 0, 0.65);
}

.p7__horizon {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 3px rgba(255, 107, 74, 0.35),
    0 0 28px rgba(255, 107, 74, 0.2);
  pointer-events: none;
  animation: p7-horizon 8s ease-in-out infinite;
}

@keyframes p7-horizon {
  0%,
  100% {
    opacity: 0.75;
  }
  50% {
    opacity: 1;
  }
}

.p7__ring {
  position: absolute;
  inset: 0;
  animation: p7-spin 28s linear infinite;
}

.p7__ring:nth-child(even) {
  animation-direction: reverse;
  animation-duration: 17s;
}

@keyframes p7-spin {
  to {
    transform: rotate(360deg);
  }
}

.p7__cell {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22%;
  height: 22%;
  margin: -11% 0 0 -11%;
  background: linear-gradient(
    180deg,
    rgba(255, 186, 120, 0.75) 0%,
    rgba(255, 90, 60, 0.28) 55%,
    rgba(120, 20, 30, 0.1) 100%
  );
  -webkit-clip-path: polygon(50% 6%, 94% 90%, 6% 90%);
  clip-path: polygon(50% 6%, 94% 90%, 6% 90%);
  transform-origin: 50% 50%;
  transform: rotate(calc(var(--i) * (360deg / var(--count)) + var(--ring) * 25.714deg))
    translateY(calc(tanh(var(--ring) * 0.58) * -34%)) rotate(180deg)
    scale(calc(1.05 / cosh(var(--ring) * 0.46)));
  filter: drop-shadow(0 0 6px rgba(255, 120, 70, 0.25));
  mix-blend-mode: screen;
}

.p7__cell:nth-child(odd) {
  background: linear-gradient(
    180deg,
    rgba(255, 220, 160, 0.55),
    rgba(180, 40, 70, 0.22) 60%,
    transparent
  );
}

.p7__core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9%;
  height: 9%;
  margin: -4.5% 0 0 -4.5%;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, #fff6d8, #ff8a4a 40%, #4a1010 100%);
  box-shadow: 0 0 22px rgba(255, 140, 70, 0.65);
  animation: p7-pulse 2.8s ease-in-out infinite;
}

@keyframes p7-pulse {
  0%,
  100% {
    transform: scale(0.9);
  }
  50% {
    transform: scale(1.12);
  }
}

.p7__geodesic {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed rgba(240, 194, 122, 0.22);
  animation: p7-spin 42s linear infinite reverse;
}

.p7__geodesic--2 {
  inset: 24%;
  animation-duration: 31s;
}

.p7__geodesic--3 {
  inset: 38%;
  animation-duration: 19s;
}

.art-vitrine.is-paused .p7__ring,
.art-vitrine.is-paused .p7__horizon,
.art-vitrine.is-paused .p7__core,
.art-vitrine.is-paused .p7__geodesic {
  animation-play-state: paused;
}

@media (prefers-reduced-motion: reduce) {
  .p7__ring,
  .p7__horizon,
  .p7__core,
  .p7__geodesic {
    animation: none !important;
  }
}