:root {
  color-scheme: dark;
  --bg: #090b16;
  --panel: rgba(10, 16, 30, 0.88);
  --line: rgba(153, 238, 255, 0.22);
  --text: #eef7ff;
  --muted: #91a7c6;
  --accent: #8af5ff;
  --accent-2: #ff7ad9;
  --good: #9cff8d;
  --warn: #ffd36d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(72, 26, 102, 0.8), transparent 30%),
    linear-gradient(180deg, #100f22 0%, #090b16 100%);
  color: var(--text);
}

.shell {
  width: min(100%, 540px);
  margin: 0 auto;
  padding: 16px 16px 32px;
}

.hud,
.controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 14px;
  backdrop-filter: blur(14px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
}

.controls {
  grid-template-columns: 1fr;
  margin-top: 14px;
}

.label,
.controls p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.value,
.controls h1 {
  margin: 4px 0 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.controls h1 {
  color: var(--accent);
}

canvas {
  display: block;
  width: 100%;
  margin: 14px 0 0;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #120d25 0%, #0c1530 100%);
  touch-action: none;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.buttons {
  display: flex;
  gap: 10px;
}

button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  color: #09111f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

button:hover {
  filter: brightness(1.05);
}

@media (max-width: 480px) {
  .shell {
    padding: 12px 12px 24px;
  }

  .hud {
    grid-template-columns: 1fr 1fr 1fr;
  }
}