* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: #16213e;
  color: #eaeaea;
  font-family: 'Segoe UI', Arial, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}
.back-to-hub {
  position: fixed; top: 14px; left: 14px; z-index: 5000;
  background: #6b46ff; color: #fff; padding: 8px 14px;
  border-radius: 6px; text-decoration: none; font-size: 13px;
  border: 2px solid #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  font-weight: 600;
}
.back-to-hub:hover { background: #fff; color: #6b46ff; }
.game-wrap {
  max-width: 720px;
  margin: 70px auto 30px;
  padding: 24px;
  text-align: center;
}
h1 {
  margin-bottom: 6px;
  background: linear-gradient(135deg, #ff66b3, #6b46ff);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  font-size: 36px;
}
.subtitle { color: #8a8aaa; margin-bottom: 20px; font-size: 14px; }
.score-row {
  display: flex; justify-content: center; gap: 16px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.score-box {
  background: #0f1729; border: 2px solid #6b46ff;
  border-radius: 8px; padding: 8px 16px;
  font-size: 14px; min-width: 100px;
}
.score-box b { display: block; font-size: 22px; color: #ff66b3; margin-top: 2px; }
button.primary {
  background: linear-gradient(135deg, #ff66b3, #6b46ff);
  color: #fff; border: none; padding: 10px 24px;
  font-size: 14px; border-radius: 6px; cursor: pointer;
  font-weight: 600; margin: 4px;
}
button.primary:hover { filter: brightness(1.15); }
button.secondary {
  background: #2a2a4a; color: #fff; border: 2px solid #6b46ff;
  padding: 10px 20px; font-size: 14px; border-radius: 6px;
  cursor: pointer; margin: 4px;
}
.message {
  margin: 12px 0; padding: 10px;
  background: #0f1729; border-radius: 6px;
  border-left: 4px solid #ff66b3;
  min-height: 22px;
}
canvas {
  background: #0a0e22; border: 3px solid #6b46ff;
  border-radius: 6px; display: block; margin: 0 auto;
  box-shadow: 0 0 30px rgba(107, 70, 255, 0.4);
}