* {
  box-sizing: border-box;
}

:root {
  --bg-1: #09131e;
  --bg-2: #101f2f;
  --panel: rgba(11, 19, 30, 0.86);
  --accent: #4ec9f5;
  --accent-2: #f7b267;
  --danger: #ff5c7a;
  --text: #edf6ff;
  --muted: #9bb5cd;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at top, rgba(78, 201, 245, 0.22), transparent 30%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.page-shell {
  border: 2px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.45);
  background: var(--panel);
  border-radius: 14px;
  overflow: hidden;
}

canvas {
  display: block;
  width: min(90vw, 960px);
  height: auto;
  background: linear-gradient(180deg, #072438 0%, #0d1e30 100%);
}