*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg,#ff69b4,#ff1493,#c71585);justify-content:center;align-items:center;min-height:100vh;font-family:Arial,sans-serif;display:flex;overflow-x:hidden}#app{width:100%;max-width:1400px;padding:15px}#menu{text-align:center;flex-direction:column;align-items:center;gap:30px;display:flex}#menu h1{color:#fff;text-shadow:3px 3px 6px #0000004d;margin-bottom:20px;font-size:48px}#menu p{color:#fff;margin-bottom:20px;font-size:20px}.difficulty-buttons{flex-wrap:wrap;justify-content:center;gap:20px;display:flex}.difficulty-option{flex-direction:column;align-items:center;gap:8px;display:flex}.difficulty-buttons button{cursor:pointer;color:#fff;text-shadow:1px 1px 2px #0003;border:none;border-radius:15px;padding:20px 40px;font-size:24px;font-weight:700;transition:all .3s}.high-score{color:#fff;text-shadow:1px 1px 2px #0000004d;background:#fff3;border-radius:8px;min-width:200px;padding:5px 10px;font-size:14px}#easyBtn{background:linear-gradient(135deg,#90ee90,#32cd32)}#mediumBtn{background:linear-gradient(135deg,gold,orange)}#hardBtn{background:linear-gradient(135deg,tomato,#dc143c)}#hardestBtn{background:linear-gradient(135deg,#8b008b,indigo)}.difficulty-buttons button:hover{transform:scale(1.05);box-shadow:0 8px 20px #0000004d}#game{display:none}.game-header{background:#fff;border-radius:10px;flex-wrap:wrap;justify-content:space-around;align-items:center;gap:10px;margin-bottom:15px;padding:12px;display:flex;box-shadow:0 4px 10px #0003}.stat{text-align:center}.stat-label{color:#666;text-transform:uppercase;font-size:13px}.stat-value{color:#ff1493;font-size:26px;font-weight:700}.grid{gap:12px;margin:0 auto;display:grid}.grid-4x3,.grid-4x4{grid-template-columns:repeat(4,1fr);max-width:800px}.grid-5x4{grid-template-columns:repeat(5,1fr);max-width:1000px}.grid-13x4{grid-template-columns:repeat(6,1fr);max-width:1200px}.card{aspect-ratio:3/4;perspective:1000px;cursor:pointer;width:100%}.card-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .6s;position:relative}.card.flipped .card-inner{transform:rotateY(180deg)}.card-front,.card-back{backface-visibility:hidden;border-radius:10px;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute}.card-front{background:linear-gradient(135deg,#ff69b4,#ff1493);font-size:42px;box-shadow:0 4px 8px #0003}.card-back{background:#fff;overflow:hidden;transform:rotateY(180deg)}.card-back img{object-fit:cover;width:100%;height:100%}.modal{z-index:1000;background:#000000e6;justify-content:center;align-items:center;width:100%;height:100%;padding:20px;display:none;position:fixed;top:0;left:0}.modal-content{text-align:center;background:#fff;border-radius:20px;flex-direction:column;width:90%;max-width:500px;max-height:90vh;padding:20px;display:flex;position:relative;overflow:hidden}.modal-content img{object-fit:contain;border-radius:10px;flex-shrink:0;width:100%;max-height:50vh;margin-bottom:15px}.modal-content h2{color:#ff1493;flex-shrink:0;margin-bottom:10px;font-size:24px}.modal-content p{color:#333;flex-shrink:1;max-height:20vh;margin-bottom:15px;font-size:16px;line-height:1.5;overflow-y:auto}.modal-btn{cursor:pointer;color:#fff;background:linear-gradient(135deg,#ff69b4,#ff1493);border:none;border-radius:10px;flex-shrink:0;padding:12px 25px;font-size:16px;font-weight:700;transition:all .3s}.modal-btn:hover{transform:scale(1.05)}@media (max-width:768px){.grid-4x3,.grid-4x4{grid-template-columns:repeat(3,1fr)}.grid-5x4,.grid-13x4{grid-template-columns:repeat(4,1fr)}#menu h1{font-size:32px}.difficulty-buttons button{padding:15px 30px;font-size:18px}.card-front{font-size:32px}.modal-content img{max-height:45vh}.modal-content p{font-size:14px}}@media (max-height:700px){.modal-content{max-height:95vh}.modal-content img{max-height:40vh}.modal-content h2{margin-bottom:8px;font-size:20px}.modal-content p{max-height:15vh;margin-bottom:10px;font-size:14px}.modal-btn{padding:10px 20px;font-size:14px}}