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

:root {
  --bg: #0a0a0f;
  --panel-bg: rgba(10, 10, 20, 0.85);
  --border: rgba(120, 80, 200, 0.35);
  --accent: #9b59b6;
  --accent-glow: rgba(155, 89, 182, 0.6);
  --text: #d8d0e8;
  --text-dim: #7a7090;
  --danger: #e74c3c;
  --warn: #e67e22;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#ui-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
}

#hud-top {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 20px;
  font-size: 14px;
  letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 16px var(--accent-glow);
  pointer-events: auto;
}

#hud-top strong {
  color: var(--accent);
}