:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:600;color-scheme:light dark;color:#fffffff2;background-color:#1a1a2e;-webkit-user-select:none;user-select:none}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden}#game-container{width:100%;height:100%;display:block}#ui-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;box-sizing:border-box;padding:24px}.hud-top{position:absolute;top:24px;left:24px;right:24px;display:flex;justify-content:space-between;align-items:flex-start}.stat-box{background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:8px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.1);box-shadow:0 4px 6px #0000004d;display:flex;flex-direction:column;align-items:center;min-width:100px}.stat-label{font-size:.75rem;color:#aaa;text-transform:uppercase;letter-spacing:1px;margin-bottom:2px}.stat-value{font-size:1.5rem;font-weight:800;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.5)}#coins-val{color:gold}#level-val{color:#4caf50}.hud-bottom{position:absolute;bottom:24px;right:24px;font-size:.9rem;color:#ffffff80}.controls-hint{display:flex;gap:20px;background:#0006;padding:10px 20px;border-radius:30px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.05)}.key-row{display:flex;align-items:center;gap:8px;font-size:.8rem;text-transform:uppercase;color:#ccc}.key{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:6px;padding:4px 8px;font-family:monospace;font-weight:700;color:#fff;box-shadow:0 2px #0003}.key.wide{padding:4px 12px}#pause-screen{position:absolute;top:0;left:0;width:100%;height:100%;background:#0006;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:200;pointer-events:auto}#pause-screen h1{font-size:4rem;margin:0;color:#fff;text-shadow:0 4px 10px rgba(0,0,0,.5);letter-spacing:5px}#pause-screen p{font-size:1.2rem;color:#aaa;margin-top:10px}#game-over-screen{position:absolute;top:0;left:0;width:100%;height:100%;background:#0a0a14d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:100;pointer-events:auto;opacity:0;transition:opacity .3s ease;pointer-events:none}#game-over-screen.visible{opacity:1;pointer-events:auto}#game-over-screen h1{font-size:5rem;margin:0 0 10px;background:linear-gradient(to bottom,#ff6b6b,#f44);-webkit-background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 4px 0 rgba(100,0,0,.5));text-transform:uppercase;font-weight:900;letter-spacing:-2px}.score-report{background:#ffffff1a;padding:20px 40px;border-radius:16px;margin-bottom:40px;text-align:center;border:1px solid rgba(255,255,255,.1)}.score-report .label{font-size:1rem;color:#aaa;text-transform:uppercase;letter-spacing:2px;margin-bottom:5px}.score-report .value{font-size:3rem;font-weight:800;color:#fff}button#restart-btn{font-family:inherit;font-size:1.5rem;font-weight:700;padding:16px 48px;cursor:pointer;background:linear-gradient(to bottom,#4caf50,#388e3c);color:#fff;border:none;border-radius:50px;box-shadow:0 6px #1b5e20,0 10px 20px #0006;transition:all .1s;text-transform:uppercase;letter-spacing:1px}button#restart-btn:hover{transform:translateY(-2px);box-shadow:0 8px #1b5e20,0 15px 25px #0006}button#restart-btn:active{transform:translateY(4px);box-shadow:0 2px #1b5e20,0 5px 10px #0006}