*{box-sizing:border-box;-webkit-user-select:none;user-select:none;margin:0;padding:0}html,body{background-color:#a0e0ff;width:100%;height:100%;font-family:Jua,Outfit,sans-serif;overflow:hidden}#app{width:100vw;height:100vh;position:relative}canvas{width:100%;height:100%;display:block}#ui-overlay{pointer-events:none;z-index:10;flex-direction:column;justify-content:space-between;width:100%;height:100%;padding:20px;display:flex;position:absolute;top:0;left:0}.hud-header{justify-content:space-between;align-items:center;width:100%;max-width:900px;margin:0 auto;display:flex}.hud-group{align-items:center;gap:16px;display:flex}.hud-card{-webkit-backdrop-filter:blur(10px);color:#333;background:#ffffffd9;border:3px solid #fff;border-radius:50px;align-items:center;gap:10px;padding:10px 20px;font-size:1.3rem;display:flex;box-shadow:0 8px 24px #0000001f}.hud-icon{font-size:1.6rem}.heart-container{gap:6px;display:flex}.heart{font-size:1.6rem;transition:transform .2s}.heart.empty{filter:grayscale()opacity(.3)}.fever-bar-container{background:#00000026;border:2px solid #fff;border-radius:10px;width:180px;height:20px;position:relative;overflow:hidden}.fever-bar-fill{background:linear-gradient(90deg,#f90,#ffea00,#f05);border-radius:10px;width:0%;height:100%;transition:width .15s}.fever-text{color:#fff;text-shadow:0 1px 3px #0009;letter-spacing:1px;font-size:.75rem;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.combo-badge{color:#fff;background:linear-gradient(135deg,#f07,#f90);border-radius:20px;padding:6px 14px;font-size:1.2rem;font-weight:700;animation:.5s infinite alternate pulse;display:none}.modal-screen{-webkit-backdrop-filter:blur(12px);pointer-events:auto;z-index:20;background:#a0e0ff66;justify-content:center;align-items:center;width:100%;height:100%;transition:opacity .3s;display:flex;position:absolute;top:0;left:0}.modal-screen.hidden{opacity:0;pointer-events:none}.modal-card{text-align:center;background:#fffffff2;border:5px solid #fff;border-radius:32px;width:90%;max-width:480px;padding:40px;animation:3s ease-in-out infinite floatCard;transform:translateY(0);box-shadow:0 20px 50px #00508c40}@keyframes floatCard{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.game-title{color:#e36;text-shadow:3px 3px #fd0,5px 5px #0000001a;margin-bottom:8px;font-size:2.6rem}.subtitle{color:#579;margin-bottom:24px;font-size:1.2rem}.controls-guide{color:#456;background:#f0f8ff;border-radius:16px;justify-content:space-around;margin-bottom:24px;padding:16px;display:flex}.control-item{flex-direction:column;align-items:center;gap:4px;display:flex}.key-cap{color:#246;background:#fff;border:2px solid #cde;border-bottom:4px solid #abc;border-radius:8px;padding:4px 10px;font-size:.9rem;font-weight:700}.btn-primary{color:#fff;cursor:pointer;background:linear-gradient(135deg,#f48,#f83);border:none;border-radius:50px;width:100%;padding:16px 36px;font-family:Jua,sans-serif;font-size:1.5rem;transition:transform .15s,box-shadow .15s;box-shadow:0 8px 20px #f486}.btn-primary:hover{transform:scale(1.05);box-shadow:0 12px 28px #ff448880}.btn-primary:active{transform:scale(.98)}.stat-box{color:#345;background:#f5f9ff;border-radius:16px;justify-content:space-between;margin-bottom:12px;padding:12px 20px;font-size:1.2rem;display:flex}.sound-toggle{cursor:pointer;pointer-events:auto;z-index:15;background:#ffffffd9;border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.4rem;display:flex;position:absolute;top:20px;right:20px;box-shadow:0 4px 12px #0000001a}.mobile-controls{pointer-events:none;z-index:15;justify-content:space-between;width:100%;padding:0 25px;display:flex;position:absolute;bottom:25px;left:0}.touch-btn{-webkit-backdrop-filter:blur(8px);color:#f48;pointer-events:auto;touch-action:manipulation;background:#fffc;border:4px solid #fff;border-radius:50%;justify-content:center;align-items:center;width:76px;height:76px;font-size:1.8rem;display:flex;box-shadow:0 8px 20px #00000026}.touch-btn:active{background:#fffffff2;transform:scale(.92)}@keyframes pulse{0%{transform:scale(1)}to{transform:scale(1.1)}}@media (width>=768px){.mobile-controls{display:none}}