*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;background:#000}.screen-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000000a6;z-index:100;gap:24px}.screen-overlay h1{color:#fff;font-family:monospace;font-size:clamp(2rem,8vw,5rem);letter-spacing:.15em;text-transform:uppercase}.screen-overlay button,#btn-pause{background:transparent;color:#fff;border:2px solid #fff;font-family:monospace;cursor:pointer;text-transform:uppercase;letter-spacing:.1em}.screen-overlay button{padding:12px 40px;font-size:1rem}.screen-overlay button:hover,#btn-pause:hover{background:#ffffff26}#btn-pause{position:fixed;top:16px;right:16px;z-index:50;padding:8px 14px;font-size:.85rem;border-width:1px;color:#fff9;border-color:#fff6}.progress-track{width:min(300px,60vw);height:2px;background:#fff3}.progress-fill{height:100%;width:0%;background:#fff;transition:width .1s ease}canvas#game-canvas{display:block;width:100%;height:100%;image-rendering:pixelated;image-rendering:crisp-edges}