:root{--bg:#1a1a2e;--layer:#16213ee6;--accent:#ff4757;--bonus:#feca57;--text:#fff;--glass:#ffffff1a;--shadow:0 8px 32px 0 #0000005e}body{background-color:var(--bg);color:var(--text);justify-content:center;align-items:center;height:100vh;margin:0;padding:0;font-family:Nunito,sans-serif;display:flex;overflow:hidden}#back-link{background:var(--glass);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);color:#fff;z-index:100;border:1px solid #fff3;border-radius:12px;padding:10px 15px;font-weight:700;text-decoration:none;transition:background .3s;position:fixed;top:20px;left:20px}#back-link:hover{background:#fff3}#game-container{width:100%;max-width:500px;height:100vh;box-shadow:var(--shadow);margin:0 auto;position:relative;overflow:hidden}#ui-layer{box-sizing:border-box;z-index:10;justify-content:space-between;width:100%;padding:30px 20px;font-family:Bungee,cursive;display:flex;position:absolute;top:0}.score-display{color:var(--accent);text-shadow:0 0 10px #ff475780;font-size:1.5rem}.high-score{opacity:.8;color:var(--bonus);font-size:1rem}#gameCanvas{background:linear-gradient(#0f0c29 0%,#302b63 50%,#24243e 100%);width:100%;height:100%;display:block}.overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:20;text-align:center;background:#000c;flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;inset:0}.overlay.hidden{display:none}.overlay h1{color:var(--accent);text-shadow:0 0 20px #ff4757cc;margin-bottom:20px;font-family:Bungee,cursive;font-size:2.5rem}.overlay h2{color:#ff4d4d;font-size:2rem}.overlay p{max-width:300px;margin-bottom:40px;font-size:1.1rem;line-height:1.6}.action-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50px;padding:15px 40px;font-size:1.5rem;font-weight:900;transition:transform .2s,box-shadow .2s;box-shadow:0 5px 15px #ff475766}.action-btn:hover{transform:translateY(-5px)scale(1.05);box-shadow:0 10px 20px #ff475799}.action-btn:active{transform:translateY(0)}