/* Небето на героя: слънце, мерник, хоризонт-решетка, прах. Декор (aria-hidden); спира с превключвателя. */

.sky {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 55% at 85% 0%, rgba(255, 181, 71, 0.16), transparent 70%),
    linear-gradient(180deg, #070a0e 0%, #0a1219 70%, #07101a 100%);
}
.sun {
  position: absolute;
  top: -22vmax;
  right: -14vmax;
  width: 62vmax;
  height: 62vmax;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 181, 71, 0.34) 0%,
    rgba(255, 150, 60, 0.12) 36%,
    transparent 66%
  );
  animation: breathe 11s ease-in-out infinite alternate;
}
@keyframes breathe {
  to {
    transform: scale(1.07);
  }
}
.reticle {
  position: absolute;
  top: 8%;
  right: 3%;
  width: min(38vw, 30rem);
  fill: none;
  stroke: var(--cyan);
  stroke-width: 0.8;
  opacity: 0.2;
  animation: spin 120s linear infinite;
}
.reticle .r2 {
  stroke-dasharray: 3 7;
}
.reticle .dot {
  fill: var(--amber);
  stroke: none;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.horizon {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 38%;
  overflow: hidden;
  /* Слаба линия: на широк екран минава под текста на героя и не бива да го „зачерква“. */
  border-top: 1px solid rgba(0, 229, 255, 0.2);
  box-shadow: 0 -1px 18px rgba(0, 229, 255, 0.12);
  perspective: 340px;
  perspective-origin: 50% -30%;
  mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
}
.horizon::before {
  content: '';
  position: absolute;
  inset: -40px -50% 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.2) 1px, transparent 1px);
  background-size:
    100% 40px,
    64px 100%;
  transform-origin: 50% 0;
  transform: rotateX(62deg);
  animation: floor 4s linear infinite;
}
@keyframes floor {
  from {
    transform: rotateX(62deg) translateY(0);
  }
  to {
    transform: rotateX(62deg) translateY(40px);
  }
}
.mote {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0;
  animation: drift 20s linear infinite;
}
.mote:nth-child(odd) {
  background: #ffd9a0;
}
.mote:nth-child(3n) {
  width: 2px;
  height: 2px;
  background: var(--cyan);
}
.mote:nth-child(5n) {
  width: 4px;
  height: 4px;
  filter: blur(1px);
}
.mote:nth-child(1) {
  left: 6%;
  top: 82%;
  animation-delay: -2s;
}
.mote:nth-child(2) {
  left: 14%;
  top: 64%;
  animation-delay: -11s;
  animation-duration: 26s;
}
.mote:nth-child(3) {
  left: 23%;
  top: 90%;
  animation-delay: -6s;
}
.mote:nth-child(4) {
  left: 31%;
  top: 72%;
  animation-delay: -15s;
  animation-duration: 17s;
}
.mote:nth-child(5) {
  left: 40%;
  top: 86%;
  animation-delay: -9s;
}
.mote:nth-child(6) {
  left: 48%;
  top: 60%;
  animation-delay: -4s;
  animation-duration: 24s;
}
.mote:nth-child(7) {
  left: 55%;
  top: 92%;
  animation-delay: -13s;
}
.mote:nth-child(8) {
  left: 63%;
  top: 70%;
  animation-delay: -7s;
  animation-duration: 19s;
}
.mote:nth-child(9) {
  left: 71%;
  top: 84%;
  animation-delay: -17s;
}
.mote:nth-child(10) {
  left: 78%;
  top: 66%;
  animation-delay: -1s;
  animation-duration: 28s;
}
.mote:nth-child(11) {
  left: 85%;
  top: 88%;
  animation-delay: -10s;
}
.mote:nth-child(12) {
  left: 91%;
  top: 74%;
  animation-delay: -5s;
  animation-duration: 22s;
}
.mote:nth-child(13) {
  left: 36%;
  top: 50%;
  animation-delay: -14s;
}
.mote:nth-child(14) {
  left: 67%;
  top: 46%;
  animation-delay: -8s;
  animation-duration: 25s;
}
@keyframes drift {
  0% {
    transform: translate3d(0, 0, 0);
    opacity: 0;
  }
  15% {
    opacity: 0.8;
  }
  85% {
    opacity: 0.6;
  }
  100% {
    transform: translate3d(70px, -300px, 0);
    opacity: 0;
  }
}