:root {
  --accent: #55c5ff;
  --accent-2: #93f7cd;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background:
    radial-gradient(1000px 520px at 10% -10%, var(--bg-glow-1) 0%, transparent 52%),
    radial-gradient(760px 460px at 100% 0%, var(--bg-glow-2) 0%, transparent 48%),
    var(--bg);
}

a,
canvas {
  -webkit-tap-highlight-color: transparent;
}

.shell {
  width: min(1060px, calc(100% - 16px));
  margin: 4px auto 20px;
}

.hud-shell,
.canvas-shell {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, black 82%, var(--panel) 18%),
    color-mix(in srgb, black 90%, var(--panel-2) 10%)
  );
  box-shadow: 0 14px 34px var(--shadow);
}

.canvas-shell {
  margin-top: 10px;
  overflow: hidden;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 680px) {
  .shell {
    width: min(1060px, calc(100% - 12px));
  }
}