html,body{width:100%;height:100%;margin:0;overflow:hidden;background:#02040a;color:#d9fbff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#app-shell{position:relative;width:100vw;height:100vh;overflow:hidden;background:#02040a}#app-shell.is-fullscreen-fallback{position:fixed;top:0;right:0;bottom:0;left:0;z-index:2147483600;width:100vw;height:100vh}#game-canvas,#hud-canvas{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100vw;height:100vh}#game-canvas{touch-action:none;z-index:1}#hud-canvas{z-index:2;pointer-events:none}.fullscreen-button{position:fixed;top:18px;left:50%;transform:translate(-50%);z-index:10;display:grid;width:42px;height:42px;place-items:center;padding:0;color:#dafcffeb;background:#000;border:1px solid rgba(54,243,255,.72);border-radius:6px;box-shadow:0 0 16px #36f3ff47,inset 0 0 12px #36f3ff1f;cursor:pointer}.fullscreen-button svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.fullscreen-button:hover,.fullscreen-button:focus-visible,.fullscreen-button[aria-pressed=true]{color:#fff;border-color:#70ff9dd9;outline:none;box-shadow:0 0 18px #70ff9d57,inset 0 0 12px #70ff9d24}