.snake #game-container{display:flex;flex-direction:column;align-items:center;gap:20px;margin:0 auto;padding:20px;position:relative}.snake #game-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 30%,rgba(79,172,254,.1) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(255,0,128,.08) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(0,245,255,.06) 0%,transparent 50%);pointer-events:none;z-index:-1}.snake #snake-canvas{border:2px solid #4facfe;border-radius:12px;background:linear-gradient(135deg,#0a0a0f,#1a1a2e);display:block;margin:0 auto;max-width:100%;height:auto;box-shadow:0 0 20px #4facfe4d,0 0 40px #4facfe1a,inset 0 0 30px #00f5ff0d;transition:all .3s ease}.snake #snake-canvas:hover{box-shadow:0 0 30px #4facfe80,0 0 60px #4facfe33,inset 0 0 30px #00f5ff1a;transform:scale(1.01)}.desktop-instructions{text-align:center;color:#94a3b8;font-size:14px;line-height:1.4;margin-top:15px;text-shadow:0 0 10px rgba(148,163,184,.3)}.desktop-instructions kbd{background:linear-gradient(135deg,#1e293b,#334155);border:1px solid #4facfe;border-radius:6px;padding:4px 8px;font-family:Courier New,monospace;font-size:12px;color:#00f5ff;box-shadow:0 0 5px #4facfe4d,inset 0 1px 2px #ffffff1a;text-shadow:0 0 3px rgba(0,245,255,.5)}@media (max-width: 768px){.desktop-instructions{display:none}.snake #snake-canvas{max-width:100%;width:90vw;height:auto;max-width:400px}}@media (max-width: 480px){.snake #snake-canvas{width:85vw;height:auto;max-width:320px}}@media (hover: none) and (pointer: coarse){.desktop-instructions{display:none}}@media (-webkit-min-device-pixel-ratio: 2),(min-resolution: 192dpi){.snake #snake-canvas{image-rendering:-webkit-optimize-contrast;image-rendering:pixelated}}.snake #snake-canvas.game-over{animation:gameOverPulse 1s ease-in-out}.snake #snake-canvas.paused{opacity:.7;filter:grayscale(30%)}@keyframes gameOverPulse{0%{transform:scale(1)}50%{transform:scale(.98)}to{transform:scale(1)}}.snake #snake-canvas{will-change:transform}