.jcs-game-portal-wrap {
  --jcs-space: #02030c;
  --jcs-panel: #0b1130;
  --jcs-cyan: #42e8ff;
  --jcs-pink: #ff50d6;
  --jcs-violet: #9a67ff;
  --jcs-gold: #ffd34e;
  display: grid;
  place-items: center;
  width: 100%;
  padding: clamp(18px, 4vw, 44px) 12px;
  box-sizing: border-box;
}

.jcs-game-portal {
  position: relative;
  display: grid;
  place-items: center;
  width: min(92vw, 430px);
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: clamp(9px, 2.8vw, 18px) solid #172454;
  border-radius: 48% 48% 24px 24px / 20% 20% 24px 24px;
  color: #fff;
  background: var(--jcs-space);
  box-shadow: 0 0 0 4px var(--jcs-violet), 0 0 24px #42e8ff99, 0 0 58px #9a67ff55;
  text-decoration: none !important;
  isolation: isolate;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.jcs-game-portal:hover,
.jcs-game-portal:focus-visible {
  color: #fff;
  box-shadow: 0 0 0 5px #fff, 0 0 28px var(--jcs-cyan), 0 0 72px #9a67ffaa;
}

.jcs-game-portal:focus-visible {
  outline: 5px solid var(--jcs-gold);
  outline-offset: 9px;
}

.jcs-game-portal__scene,
.jcs-game-portal__frame,
.jcs-game-portal__doors {
  position: absolute;
  inset: 0;
}

.jcs-game-portal__scene {
  background:
    radial-gradient(circle at 22% 18%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 72% 24%, #a8fbff 0 2px, transparent 3px),
    radial-gradient(circle at 38% 44%, #fff 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 82% 58%, #fff 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 17% 72%, #ffd34e 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 55% 79%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 50% 42%, #302568, #07102c 48%, var(--jcs-space) 78%);
}

.jcs-game-portal__stars {
  position: absolute;
  inset: 0;
  opacity: .72;
  background-image: radial-gradient(#fff 0 1px, transparent 1.7px);
  background-size: 31px 31px;
  background-position: 8px 13px;
}

.jcs-game-portal__planet {
  position: absolute;
  right: 8%;
  top: 13%;
  width: 26%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #fff3ae, #ef78b5 46%, #7851c8 100%);
  box-shadow: 0 0 24px #ff50d688;
}

.jcs-game-portal__planet::after {
  content: "";
  position: absolute;
  left: -28%;
  top: 40%;
  width: 156%;
  height: 22%;
  border: 5px solid var(--jcs-cyan);
  border-radius: 50%;
  transform: rotate(-14deg);
}

.jcs-game-portal__frame {
  z-index: 4;
  pointer-events: none;
  border: 3px solid #ffffff44;
  border-radius: inherit;
  box-shadow: inset 0 0 22px var(--jcs-cyan);
}

.jcs-game-portal__light {
  position: absolute;
  left: 14%;
  right: 14%;
  top: 3%;
  height: 8px;
  border-radius: 999px;
  background: var(--jcs-cyan);
  box-shadow: 0 0 18px var(--jcs-cyan);
}

.jcs-game-portal__doors {
  z-index: 2;
  display: flex;
  overflow: hidden;
}

.jcs-game-portal__door {
  width: 50.5%;
  height: 100%;
  background:
    linear-gradient(90deg, transparent 45%, #42e8ff3d 47% 53%, transparent 55%),
    repeating-linear-gradient(0deg, transparent 0 46px, #9a67ff4a 47px 50px),
    linear-gradient(135deg, #111a41, #070d26 62%, #172454);
  border: 1px solid #42e8ff66;
  transition: transform .74s cubic-bezier(.65, 0, .25, 1);
}

.jcs-game-portal__door--left { transform-origin: left center; }
.jcs-game-portal__door--right { transform-origin: right center; }

.jcs-game-portal__sign {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 80%;
  min-height: 42%;
  padding: 22px 18px;
  border: 3px solid var(--jcs-cyan);
  border-radius: 24px;
  color: #fff;
  background: #070d26ed;
  box-shadow: 0 0 22px #42e8ff88, inset 0 0 18px #9a67ff44;
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 900;
  line-height: 1.08;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .02em;
  transition: opacity .25s ease, transform .4s ease;
}

.jcs-game-portal__icon {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(3rem, 12vw, 5rem);
  line-height: 1;
}

.jcs-game-portal__sign small {
  margin-top: 13px;
  color: var(--jcs-gold);
  font-size: clamp(.85rem, 3vw, 1rem);
  letter-spacing: .08em;
}

.jcs-game-portal:hover .jcs-game-portal__sign {
  transform: translateY(-3px) scale(1.02);
}

.jcs-game-portal.is-opening .jcs-game-portal__door--left { transform: translateX(-102%); }
.jcs-game-portal.is-opening .jcs-game-portal__door--right { transform: translateX(102%); }
.jcs-game-portal.is-opening .jcs-game-portal__sign { opacity: 0; transform: scale(.82); }
.jcs-game-portal.is-opening .jcs-game-portal__scene { animation: jcs-portal-arrive .82s ease-out both; }

.jcs-wormhole-transition {
  position: fixed;
  inset: -30vmax;
  z-index: 2147483646;
  pointer-events: none;
  display: grid;
  place-items: center;
  background:
    repeating-conic-gradient(from 0deg, #42e8ff 0 7deg, #26145f 8deg 18deg, #ff50d6 19deg 24deg, #02030c 25deg 35deg);
  animation: jcs-wormhole-spin .92s cubic-bezier(.5,0,.2,1) both;
}

.jcs-wormhole-transition::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, transparent 0 8%, #02030c55 23%, transparent 52%);
}

.jcs-wormhole-transition span {
  width: 12vmax;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #000;
  box-shadow: 0 0 40px 18px #42e8ff, 0 0 100px 44px #9a67ff99;
  animation: jcs-wormhole-center .92s ease-in both;
}

@keyframes jcs-portal-arrive {
  from { transform: scale(.86); filter: brightness(.6); }
  to { transform: scale(1.08); filter: brightness(1.18); }
}

@keyframes jcs-wormhole-spin {
  0% { opacity: 0; transform: rotate(0deg) scale(1.8); filter: blur(10px) brightness(.55); }
  28% { opacity: 1; }
  100% { opacity: 1; transform: rotate(210deg) scale(.28); filter: blur(1px) brightness(1.28); }
}

@keyframes jcs-wormhole-center {
  from { transform: scale(.15); }
  to { transform: scale(7); }
}

@media (max-width: 480px) {
  .jcs-game-portal { width: min(88vw, 350px); border-radius: 46% 46% 20px 20px / 18% 18% 20px 20px; }
  .jcs-game-portal__sign { width: 84%; padding-inline: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .jcs-game-portal,
  .jcs-game-portal *,
  .jcs-wormhole-transition,
  .jcs-wormhole-transition * { animation: none !important; transition: none !important; }
  .jcs-wormhole-transition { display:none !important; }
}