:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #fff;
  background: #020305;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; }
body {
  margin: 0;
  overflow: hidden;
  background: #020305;
}

#jupiter {
  display: block;
  width: 100vw;
  height: 100dvh;
  touch-action: none;
}

.fullscreen,
.lang {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  z-index: 10;
  display: grid;
  place-items: center;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  color: rgba(255,255,255,.9);
  background: rgba(5, 7, 10, .28);
  box-shadow: 0 8px 28px rgba(0,0,0,.22);
  backdrop-filter: blur(12px) saturate(120%);
  cursor: pointer;
  opacity: .84;
  transition: opacity .45s ease, transform .25s ease, background .25s ease;
}

.fullscreen {
  right: max(18px, env(safe-area-inset-right));
  width: 46px;
}

.lang {
  left: max(18px, env(safe-area-inset-left));
  min-width: 48px;
  padding: 0 12px;
  font: 800 12px/1 Inter, ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .08em;
}

.fullscreen:hover,
.lang:hover {
  background: rgba(10, 14, 20, .54);
  opacity: 1;
  transform: scale(1.04);
}

.fullscreen svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ui-idle { cursor: none; }
.ui-idle .fullscreen,
.ui-idle .lang {
  opacity: 0;
  pointer-events: none;
  transform: scale(.94);
}

.intro {
  position: fixed;
  left: max(22px, env(safe-area-inset-left));
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 5;
  display: grid;
  gap: 4px;
  pointer-events: none;
  text-shadow: 0 2px 18px rgba(0,0,0,.8);
  animation: intro-away 7s ease forwards;
}

.intro strong {
  font-size: 13px;
  letter-spacing: .2em;
  font-weight: 900;
}

.intro span {
  font-size: 10px;
  letter-spacing: .11em;
  text-transform: uppercase;
  opacity: .58;
}

@keyframes intro-away {
  0%, 40% { opacity: .86; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(5px); }
}

.status {
  position: fixed;
  inset: 50% auto auto 50%;
  z-index: 20;
  width: min(560px, calc(100% - 40px));
  transform: translate(-50%, -50%);
  padding: 20px 22px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 20px;
  color: rgba(255,255,255,.92);
  background: rgba(2,3,5,.82);
  box-shadow: 0 18px 50px rgba(0,0,0,.42);
  backdrop-filter: blur(14px);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
}

@media (pointer: coarse) {
  .fullscreen,
  .lang { opacity: .72; }
}

@media (prefers-reduced-motion: reduce) {
  .intro { animation: none; opacity: .72; }
  .fullscreen,
  .lang { transition: none; }
}