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scale(.98)}75%{transform:translateY(85vh) rotate(840deg) scale(1);opacity:.6}85%{transform:translateY(95vh) rotate(960deg) scale(.9);opacity:.3}to{transform:translateY(110vh) rotate(1080deg) scale(.8);opacity:0}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.how-to-play-overlay{position:fixed;background:linear-gradient(135deg,#141e30fa,#243b55fa);border:2px solid rgba(100,150,255,.5);border-radius:12px;box-shadow:0 8px 32px #00000080;z-index:10000;min-width:600px;max-width:800px;max-height:80vh;overflow:hidden;cursor:move;transition:all .3s ease}.how-to-play-overlay.collapsed{max-height:60px;cursor:default}.how-to-play-header{background:linear-gradient(135deg,#325078e6,#1e3250e6);padding:15px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid rgba(100,150,255,.3);cursor:move;-webkit-user-select:none;user-select:none}.how-to-play-header 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20px;color:#4caf50;text-shadow:0 0 10px rgba(76,175,80,.5)}.demano-hand-info{background:#4caf501a;border:1px solid #4caf50;border-radius:8px;padding:15px;margin:20px 0}.demano-hand-category{font-size:1.4rem;font-weight:700;color:#4caf50;margin:0 0 8px;text-transform:uppercase;letter-spacing:1px}.demano-hand-type{font-size:1.6rem;font-weight:600;color:#fff;margin:0 0 10px}.demano-score{font-size:1.5rem;color:#4caf50;margin:0;font-weight:700}.demano-question{font-size:1.2rem;color:#fff;margin:20px 0 10px;font-weight:500}.demano-description{font-size:1rem;color:#bbb;margin:10px 0 30px;line-height:1.5}.demano-buttons{display:flex;gap:20px;justify-content:center}.demano-button{padding:15px 30px;font-size:1.1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;min-width:180px}.demano-button.accept{background:linear-gradient(135deg,#4caf50,#45a049);color:#fff;box-shadow:0 4px 15px #4caf5066}.demano-button.accept:hover{transform:translateY(-2px);box-shadow:0 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#0000004d;min-width:300px;max-width:500px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);transition:all .2s ease}.notification-container:hover{transform:scale(1.02);box-shadow:0 12px 40px #0006}.notification-icon{font-size:24px;flex-shrink:0}.notification-message{flex:1;font-size:15px;font-weight:500;line-height:1.4}.notification-close{font-size:20px;opacity:.7;flex-shrink:0;transition:opacity .2s ease}.notification-container:hover .notification-close{opacity:1}@media(max-width:768px){.notification-overlay{top:10px;left:10px;right:10px;transform:none}.notification-container{min-width:auto;width:100%}}.error-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#000000d9;display:flex;justify-content:center;align-items:center;z-index:10000;animation:fadeIn .2s ease-in-out}.error-container{background:linear-gradient(135deg,#f44,#c00);border-radius:20px;padding:30px;max-width:500px;width:90%;box-shadow:0 10px 40px #ff444480;animation:slideUp .3s ease-out;border:2px solid rgba(255,255,255,.3)}.error-header{display:flex;align-items:center;gap:15px;margin-bottom:20px}.error-icon{font-size:40px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.3))}.error-title{font-size:28px;font-weight:700;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.error-message{color:#fff;font-size:18px;line-height:1.6;margin-bottom:25px;text-shadow:0 1px 2px rgba(0,0,0,.2)}.error-dismiss-button{width:100%;padding:14px 24px;font-size:18px;font-weight:700;color:#f44;background-color:#fff;border:none;border-radius:10px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 8px #0003}.error-dismiss-button:hover{background-color:#f0f0f0;transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}.error-dismiss-button:active{transform:translateY(0);box-shadow:0 2px 4px #0003}@keyframes 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