.scene {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 0;
  padding: clamp(0.5rem, 2vh, 2rem) 0;
}

.orbit-system {
  --orbit-size: min(92vmin, 50rem);
  position: relative;
  width: var(--orbit-size);
  aspect-ratio: 1;
}

.hub {
  position: absolute;
  inset: 50%;
  width: 0;
  height: 0;
  z-index: 2;
}

.hub__core {
  position: absolute;
  width: 1.25rem;
  height: 1.25rem;
  margin: -0.625rem 0 0 -0.625rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow), 0 0 48px var(--accent-glow);
  transition: background 0.6s ease, box-shadow 0.6s ease;
}

.hub__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
  transition: border-color 0.6s ease;
}

.hub__ring--1 {
  width: 3.5rem;
  height: 3.5rem;
  margin: -1.75rem 0 0 -1.75rem;
  animation: hub-pulse 4s ease-in-out infinite;
}

.hub__ring--2 {
  width: 5.5rem;
  height: 5.5rem;
  margin: -2.75rem 0 0 -2.75rem;
  animation: hub-pulse 4s ease-in-out infinite 0.5s;
}

@keyframes hub-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.orbit-rings {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orbit-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid var(--border);
  transform: translate(-50%, -50%);
  transition: border-color 0.6s ease;
}

.orbit-ring--inner {
  width: 58%;
  height: 58%;
  animation: ring-spin 90s linear infinite;
}

.orbit-ring--outer {
  width: 88%;
  height: 88%;
  animation: ring-spin 140s linear infinite reverse;
}

@keyframes ring-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.planets {
  position: absolute;
  inset: 0;
}

.planet {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform: rotate(var(--angle)) translateX(var(--radius)) rotate(calc(-1 * var(--angle)));
  animation: planet-float 5s ease-in-out infinite;
  animation-delay: var(--float-delay, 0s);
}

.planet__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin: -1.75rem 0 0 -1.75rem;
  width: 3.5rem;
  text-decoration: none;
  color: inherit;
  outline: none;
}

.planet__body {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--planet-color, var(--accent));
  box-shadow: 0 0 12px var(--planet-glow, var(--accent-glow));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.planet__label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.3s ease;
}

.planet__link:hover .planet__body,
.planet__link:focus-visible .planet__body,
.planet.is-active .planet__body {
  transform: scale(1.2);
  box-shadow: 0 0 20px var(--planet-glow, var(--accent-glow)), 0 0 40px var(--planet-glow, var(--accent-glow));
}

.planet__link:hover .planet__label,
.planet__link:focus-visible .planet__label,
.planet.is-active .planet__label {
  color: var(--text);
}

.planet--inner {
  --radius: calc(var(--orbit-size) * 0.29);
}

.planet--outer {
  --radius: calc(var(--orbit-size) * 0.44);
}

@keyframes planet-float {
  0%, 100% { transform: rotate(var(--angle)) translateX(var(--radius)) rotate(calc(-1 * var(--angle))) translateY(0); }
  50% { transform: rotate(var(--angle)) translateX(var(--radius)) rotate(calc(-1 * var(--angle))) translateY(-4px); }
}

.orbit-system:has(.planet__link:hover) .orbit-ring,
.orbit-system:has(.planet.is-active) .orbit-ring {
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

@media (max-width: 640px) {
  .orbit-system {
    --orbit-size: min(96vw, 22rem);
  }

  .planet__body {
    width: 2.75rem;
    height: 2.75rem;
  }

  .planet__link {
    margin: -1.375rem 0 0 -1.375rem;
    width: 2.75rem;
  }

  .planet__label {
    font-size: 0.625rem;
  }

  .projects-index {
    max-height: min(45vh, 22rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-ring--inner,
  .orbit-ring--outer,
  .planet,
  .hub__ring {
    animation: none;
  }
}