:root {
  --bg: #050811;
  --fg: #e6eef8;
  --accent: #4fd1c5;
  --accent2: #a78bfa;
}

html, body {
  height: 100%;
  margin: 0;
  font-family: Inter, system-ui, Segoe UI, Roboto, Arial;
}

@keyframes glow {
  0%, 100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
}

.wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  background: radial-gradient(ellipse at top, rgba(79, 209, 197, 0.08), transparent 50%), 
              radial-gradient(ellipse at bottom, rgba(167, 139, 250, 0.06), transparent 50%), 
              var(--bg);
  color: var(--fg);
}

canvas {
  background: linear-gradient(135deg, #08101b 0%, #0f1525 50%, #0a1018 100%);
  border-radius: 12px;
  box-shadow: 0 0 60px rgba(79, 209, 197, 0.15), 0 8px 40px rgba(2, 6, 14, 0.8);
  border: 1px solid rgba(79, 209, 197, 0.15);
  transition: box-shadow 0.3s ease;
}

canvas:hover {
  box-shadow: 0 0 80px rgba(79, 209, 197, 0.25), 0 8px 40px rgba(2, 6, 14, 0.8);
}

.hud {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  padding: 0 20px;
}

.score {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 12px rgba(79, 209, 197, 0.4));
}

.controls {
  font-size: 13px;
  opacity: 0.75;
  padding: 8px 16px;
  background: rgba(79, 209, 197, 0.05);
  border-radius: 8px;
  border: 1px solid rgba(79, 209, 197, 0.1);
}

.btn {
  background: rgba(79, 209, 197, 0.08);
  border: 1px solid rgba(79, 209, 197, 0.3);
  padding: 10px 16px;
  border-radius: 8px;
  color: var(--fg);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
  font-size: 13px;
}

.btn:hover {
  background: rgba(79, 209, 197, 0.15);
  border-color: rgba(79, 209, 197, 0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 209, 197, 0.2);
}

.btn:active {
  transform: translateY(0);
}

select.btn {
  background: rgba(79, 209, 197, 0.08);
  color: var(--fg);
  border: 1px solid rgba(79, 209, 197, 0.3);
  cursor: pointer;
}

select.btn:hover {
  background: rgba(79, 209, 197, 0.12);
}

.small {
  font-size: 12px;
  opacity: 0.9;
}

footer {
  position: fixed;
  bottom: 12px;
  left: 12px;
  font-size: 12px;
  opacity: 0.4;
}