:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;justify-content:center;align-items:center;min-width:320px;min-height:100vh;background:#1a1a1a;overflow:hidden}#game-container{position:relative;width:800px;height:600px;box-shadow:0 0 50px #00000080;background:#000;max-width:100vw;max-height:100vh}canvas{display:block;width:100%;height:100%;image-rendering:pixelated}#ui-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.screen-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000d9;display:flex;flex-direction:column;justify-content:center;align-items:center;pointer-events:auto;color:#fff;text-align:center}.hidden{display:none!important}h1{font-family:Pixelify Sans,cursive;font-size:4rem;margin:0 0 20px;color:#fc0;text-shadow:4px 4px 0 #cc0000}p{font-size:1.2rem;margin-bottom:2rem;line-height:1.6}.ad-placeholder{width:728px;height:90px;background:#333;border:2px dashed #555;display:flex;justify-content:center;align-items:center;margin-bottom:2rem;color:#777}button{font-family:Pixelify Sans,sans-serif;font-size:2rem;padding:15px 40px;background:#f05;color:#fff;border:none;cursor:pointer;border-bottom:5px solid #990033;transition:transform .1s}button:active{transform:translateY(4px);border-bottom:1px solid #990033}#score{position:absolute;top:20px;left:20px;font-size:2rem;font-weight:700;color:#fff;text-shadow:2px 2px 0 #000}#instructions{font-size:1.2rem;color:#fff;text-align:center;text-shadow:1px 1px 0 #000;opacity:.8}