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p{font-size:1.1rem}.memory-board{grid-gap:10px;display:grid;gap:10px;grid-template-columns:repeat(4,1fr);height:320px;margin:0 auto;padding:20px;width:320px}.memory-card{cursor:pointer;height:70px;perspective:1000px;position:relative;width:70px}.card-back,.card-front{align-items:center;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:8px;display:flex;font-size:1.5rem;font-weight:700;height:100%;justify-content:center;position:absolute;transition:transform .6s;width:100%}.card-front{background:#3498db;color:#fff;transform:rotateY(0deg)}.card-back{background:#2ecc71;color:#fff;transform:rotateY(-180deg)}.memory-card.flipped .card-front{transform:rotateY(180deg)}.memory-card.flipped .card-back{transform:rotateY(0deg)}@media (max-width:480px){.memory-board{width:280px}.memory-card{height:60px;width:60px}.card-back,.card-front{font-size:1.2rem}}.choices-container{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin:2rem 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.2s;width:60px}.column-indicator.droppable{background:#4caf504d;border:2px solid #4caf5080;color:#4caf50}.column-indicator.droppable:hover{background:#4caf5080;transform:translateY(-2px)}.column-indicator.blocked{background:#f443364d;border:2px solid #f4433680;color:#f44336;cursor:not-allowed;opacity:.6}.board-grid{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(6,1fr)}.connect-four-cell{align-items:center;background:#ffffff1a;border:2px solid #fff3;border-radius:50%;cursor:pointer;display:flex;height:60px;justify-content:center;transition:all .3s ease;width:60px}.connect-four-cell:hover{background:#fff3;transform:scale(1.05)}.connect-four-cell.player1{background:radial-gradient(circle,#ff5722,#d32f2f);box-shadow:0 0 15px #ff572280}.connect-four-cell.player2{background:radial-gradient(circle,#ffeb3b,#ffc107);box-shadow:0 0 15px #ffeb3b80}.connect-four-cell.winning{animation:winning-pulse 1s ease-in-out 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