@import"https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap";:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{margin:0;font-family:Poppins,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#1a1a2e;color:#e0e0e0;display:flex;justify-content:center;align-items:center;min-height:100vh}.App{text-align:center;padding:20px}h1{font-size:2.5rem;font-weight:700;color:#fff;margin-bottom:.5rem}p{font-size:1.1rem;color:#a0a0c0;margin-bottom:2rem}.game-board{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;justify-content:center;max-width:700px;margin:auto}.card{width:150px;height:150px;perspective:1000px;background-color:transparent;border:none;cursor:pointer}.card-inner{position:relative;width:100%;height:100%;transition:transform .7s,box-shadow .3s;transform-style:preserve-3d;box-shadow:0 4px 12px #0006;border-radius:12px}.card:hover .card-inner{box-shadow:0 8px 24px #2debff33;transform:scale(1.02)}.card.flipped .card-inner{transform:rotateY(180deg)}.card-front,.card-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:12px;display:flex;align-items:center;justify-content:center;text-align:center;padding:10px;font-weight:600}.card-front{background:linear-gradient(135deg,#16222a,#3a6073);background-image:url(https://upload.wikimedia.org/wikipedia/commons/d/df/Sustainable_Development_Goals.svg);background-size:60%;background-repeat:no-repeat;background-position:center}.card-back{transform:rotateY(180deg);font-size:1rem;color:#111;text-shadow:none}.win-message{margin-top:30px;background-color:#16162ee6;padding:30px 40px;border-radius:15px;border:1px solid #4a4a6a;box-shadow:0 0 20px #2debff1a}.win-message h2{margin:0 0 20px;font-size:2rem;color:#4caf50}.win-message button{background:linear-gradient(45deg,#4caf50,#81c784);color:#fff;border:none;border-radius:8px;padding:12px 28px;font-size:1.1rem;font-weight:600;font-family:Poppins,sans-serif;cursor:pointer;transition:transform .2s ease-in-out,box-shadow .2s;box-shadow:0 4px 10px #0000004d}.win-message button:hover{transform:scale(1.05);box-shadow:0 6px 15px #0006}footer{margin-top:40px;padding:10px;font-size:.9em;color:#a0a0c0}footer a{color:#4dd0e1;text-decoration:none;font-weight:700;transition:color .2s}footer a:hover{color:#fff;text-decoration:underline}