:root {
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 14%, rgba(255, 184, 72, 0.18), transparent 34%),
    linear-gradient(135deg, #120b07 0%, #231109 48%, #090807 100%);
}

body {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);
}

.phone-stage {
  width: min(
    calc(100vw - var(--safe-left) - var(--safe-right)),
    calc((100dvh - var(--safe-top) - var(--safe-bottom)) * 9 / 16),
    430px
  );
  height: min(
    calc(100dvh - var(--safe-top) - var(--safe-bottom)),
    calc((100vw - var(--safe-left) - var(--safe-right)) * 16 / 9),
    764px
  );
  overflow: hidden;
  background: #20120b;
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.5);
}

.game-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #20120b;
}

@media (orientation: portrait) and (max-width: 768px) {
  body {
    padding: 0;
    background: #20120b;
  }

  .phone-stage {
    width: 100vw;
    height: 100dvh;
    box-shadow: none;
  }
}