:root {
  --bg: #07080f;
  --panel: rgba(12, 14, 26, 0.82);
  --cyan: #22d3ee;
  --violet: #7c6cff;
  --magenta: #ff3d9a;
  --text: #e7ecff;
  --muted: #8b93b8;
  --line: rgba(124, 124, 255, 0.16);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  overflow: hidden;
}

body {
  display: grid;
  place-items: center;
  padding: 16px;
  /* faint animated cyber grid */
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
}

.wrap {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  letter-spacing: 1px;
}

.brand {
  font-size: 13px;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
}

.scores { display: flex; gap: 18px; font-size: 12px; color: var(--muted); text-transform: uppercase; }
.scores b { color: var(--text); font-size: 14px; margin-left: 4px; }

.stage {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(124, 108, 255, 0.25), inset 0 0 60px rgba(7, 8, 15, 0.9);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at center, rgba(7, 8, 15, 0.55), rgba(7, 8, 15, 0.92));
  backdrop-filter: blur(3px);
  transition: opacity 0.25s ease;
}
.overlay.hidden { opacity: 0; pointer-events: none; }

.panel {
  text-align: center;
  padding: 28px 26px;
  max-width: 340px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
}

.panel h1 {
  font-size: 26px;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.panel p { margin: 12px 0 20px; font-size: 13px; line-height: 1.6; color: var(--muted); }

.btn {
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #07080f;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  border: 0;
  border-radius: 9px;
  padding: 12px 28px;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.45);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 0 32px rgba(124, 108, 255, 0.6); }
.btn:active { transform: translateY(0); }

.hint {
  text-align: center;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
}