*{box-sizing:border-box;margin:0;padding:0}body{background:#eef2f7;justify-content:center;align-items:center;min-height:100vh;font-family:Segoe UI,system-ui,-apple-system,sans-serif;display:flex}#root{justify-content:center;align-items:center;width:100%;min-height:100vh;padding:24px;display:flex}.game-container{background:#fff;border-radius:20px;flex-direction:column;align-items:center;gap:20px;padding:32px 40px;display:flex;box-shadow:0 8px 40px #1e3c721f,0 2px 8px #1e3c720f}.title{color:#1e3c72;letter-spacing:3px;font-size:32px;font-weight:800}.score-board{align-items:center;gap:20px;display:flex}.score-board span{color:#fff;letter-spacing:1px;background:linear-gradient(135deg,#1e3c72,#2a5298);border-radius:10px;padding:8px 24px;font-size:18px;font-weight:700;box-shadow:0 3px 12px #1e3c7240}.board-wrapper{border-radius:12px;display:inline-block;position:relative;overflow:hidden}.board{background:#c8d6e5;border:4px solid #1e3c72;border-radius:12px;grid-template-rows:repeat(20,20px);grid-template-columns:repeat(20,20px);gap:1px;padding:2px;display:grid;box-shadow:0 4px 20px #1e3c7226}.cell{background:#dfe6ed;border-radius:3px;width:20px;height:20px}.snake-head{background:linear-gradient(135deg,#1e3c72,#2a5298);border-radius:5px;box-shadow:0 0 8px #1e3c7280}.snake-body{background:linear-gradient(135deg,#2a5298,#3b6db5);border-radius:4px;box-shadow:0 0 4px #2a52984d}.food{background:#e74c3c;border-radius:50%;animation:.8s ease-in-out infinite alternate pulse;box-shadow:0 0 10px #e74c3c80}@keyframes pulse{0%{transform:scale(.75);box-shadow:0 0 6px #e74c3c66}to{transform:scale(1);box-shadow:0 0 14px #e74c3cb3}}.overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10;background:#1e3c72d9;border-radius:12px;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute;top:0;left:0}.overlay-content{text-align:center;color:#fff;padding:32px}.overlay-content h2{color:#fff;letter-spacing:2px;margin-bottom:16px;font-size:32px}.overlay-content p{color:#fffc;margin-bottom:6px;font-size:15px;line-height:1.8}.final-score{letter-spacing:2px;color:#f9ca24!important;margin:16px 0!important;font-size:36px!important;font-weight:800!important}.hint{margin-top:12px;color:#ffffff73!important;font-size:13px!important}.btn{color:#1e3c72;cursor:pointer;letter-spacing:2px;background:linear-gradient(135deg,#f9ca24,#f0b723);border:none;border-radius:10px;margin-top:20px;padding:12px 40px;font-size:17px;font-weight:700;transition:all .25s;box-shadow:0 4px 16px #f9ca2459}.btn:hover{background:linear-gradient(135deg,#f0b723,#e0a812);transform:translateY(-2px);box-shadow:0 6px 24px #f9ca2480}.btn:active{transform:translateY(0);box-shadow:0 2px 8px #f9ca244d}.speed-selector{margin-top:20px}.speed-label{color:#ffffff8c!important;margin-bottom:10px!important;font-size:14px!important}.speed-options{justify-content:center;gap:8px;display:flex}.speed-btn{color:#ffffffb3;cursor:pointer;background:#ffffff14;border:2px solid #ffffff26;border-radius:8px;padding:7px 18px;font-size:14px;font-weight:600;transition:all .2s}.speed-btn:hover{color:#fff;background:#ffffff26;border-color:#ffffff4d}.speed-btn.active{color:#1e3c72;background:#f9ca24;border-color:#f9ca24;font-weight:700;box-shadow:0 0 12px #f9ca2466}