* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

html {
            background: #F2A766;
}

        body {
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #F2F1F0 0%, #F2A766 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            /*padding: 20px;*/
        }

        .container {
            max-width: 900px;
            width: 100%;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            /*padding: 20px;*/
            /*background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            backdrop-filter: blur(10px);*/
            max-width: 100%;
        }

        .tile {
            aspect-ratio: 1;
            perspective: 1000px;
            cursor: pointer;
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        /* Tile position classes for selective hiding */
        .tile[data-position="0"],
        .tile[data-position="1"],
        .tile[data-position="2"],
        .tile[data-position="3"],
        .tile[data-position="4"],
        .tile[data-position="5"],
        .tile[data-position="9"],
        .tile[data-position="10"],
        .tile[data-position="14"],
        .tile[data-position="15"],
        .tile[data-position="19"],
        .tile[data-position="20"],
        .tile[data-position="21"],
        .tile[data-position="22"],
        .tile[data-position="23"],
        .tile[data-position="24"] {
            /* All tiles visible by default */
        }

        .tile-inner {
            position: relative;
            width: 100%;
            height: 100%;
            transition: transform 0.8s;
            transform-style: preserve-3d;
        }

        .tile.flipped .tile-inner {
            transform: rotateY(180deg);
        }

        .tile-front, .tile-back {
            position: absolute;
            width: 100%;
            height: 100%;
            backface-visibility: hidden;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
        }

        .tile-front {
            background: linear-gradient(135deg, #8C8C8A 0%, #F8FFF5 100%);
        }

        .tile-back {
            background: linear-gradient(135deg, #FDF8F6 0%, #8C8C8A 100%);
            transform: rotateY(180deg);
        }

        .tile-front img, .tile-back img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .tile.center .tile-inner {
            transform: none !important;
        }

        .tile.center {
            cursor: default;
        }

        .tile.center .tile-front {
            background: none;
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
        }

        /* Responsive design */
        @media (max-width: 768px) {
            .grid {
                grid-template-columns: repeat(3, 1fr); /* Change to 3 columns */
                gap: 12px;
                padding: 15px;
            }
            
            /* Hide outer tiles to create centered 3x3 grid */
            .tile[data-position="0"],
            .tile[data-position="1"],
            .tile[data-position="2"],
            .tile[data-position="3"],
            .tile[data-position="4"],
            .tile[data-position="5"],
            .tile[data-position="9"],
            .tile[data-position="10"],
            .tile[data-position="14"],
            .tile[data-position="15"],
            .tile[data-position="19"],
            .tile[data-position="20"],
            .tile[data-position="21"],
            .tile[data-position="22"],
            .tile[data-position="23"],
            .tile[data-position="24"] {
                display: none;
            }
            
            /* Reorder visible tiles to maintain visual center */
            .tile[data-position="6"] { order: 1; }
            .tile[data-position="7"] { order: 2; }
            .tile[data-position="8"] { order: 3; }
            .tile[data-position="11"] { order: 4; }
            .tile[data-position="12"] { order: 5; } /* Center shell */
            .tile[data-position="13"] { order: 6; }
            .tile[data-position="16"] { order: 7; }
            .tile[data-position="17"] { order: 8; }
            .tile[data-position="18"] { order: 9; }
        }

        @media (max-width: 480px) {
            .grid {
                grid-template-columns: repeat(3, 1fr); /* Keep 3 columns */
                gap: 10px;
                padding: 12px;
            }
            
            body {
                padding: 10px;
            }
        }
        
        /* Ensure smooth scaling */
        @media (min-width: 769px) and (max-width: 1024px) {
            .grid {
                gap: 13px;
            }
        }
        
        /* Large screens */
        @media (min-width: 1200px) {
            .container {
                max-width: 1000px;
            }
            
            .grid {
                gap: 18px;
                /*padding: 25px;*/
            }
        }