:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;background-color:#f0f0f0;color:#333;margin:0;padding:0}body{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:10px}h1{font-size:clamp(1.8em,4vw,2.5em);margin-bottom:20px;text-align:center}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;background-color:#007bff;color:#fff;cursor:pointer;transition:background-color .3s,border-color .3s;min-height:44px}button:hover{background-color:#0056b3}.card{width:100%;aspect-ratio:2/3;max-width:100px;max-height:150px;min-width:60px;min-height:90px;border-radius:8px;background-color:#fff;box-shadow:0 2px 5px #0003;display:flex;align-items:center;justify-content:center;font-size:clamp(1em,3vw,1.5em);color:#333;cursor:pointer;transition:transform .3s;margin:0}.card.flipped{background-color:#e0e0e0}.app{text-align:center;padding:10px;width:100%;max-width:600px;margin:0 auto}.score-board{display:flex;justify-content:center;gap:clamp(20px,5vw,40px);margin-bottom:20px;flex-wrap:wrap}.score{padding:10px 15px;border-radius:8px;background-color:#f8f9fa;border:2px solid #dee2e6;font-weight:700;font-size:clamp(1em,2.5vw,1.2em);min-width:120px}.score.active{background-color:#007bff;color:#fff;border-color:#0056b3}.game-over{background-color:#f8f9fa;border:2px solid #dee2e6;border-radius:8px;padding:20px;margin:20px 0;width:100%;box-sizing:border-box}.game-over h2{margin-top:0;color:#495057;font-size:clamp(1.5em,4vw,2em)}.turn-indicator{margin-bottom:20px;font-size:clamp(1em,2.5vw,1.1em);font-weight:700;color:#495057}.game-board{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(5px,2vw,10px);width:100%;max-width:500px;margin:0 auto;padding:10px;box-sizing:border-box}@media (max-width: 768px){.app{padding:15px}.score-board{gap:15px}.score{padding:8px 12px;min-width:100px}.game-board{gap:8px;padding:5px}}@media (max-width: 480px){body{padding:5px}.app{padding:10px 5px}h1{margin-bottom:15px}.score-board{gap:10px;margin-bottom:15px}.score{padding:6px 10px;min-width:80px;font-size:.9em}.game-over{padding:15px;margin:15px 0}.turn-indicator{margin-bottom:15px}.game-board{gap:5px;padding:0;max-width:320px}.card{min-width:50px;min-height:75px}}@media (max-width: 320px){.game-board{max-width:280px}.card{min-width:45px;min-height:67px}.score{min-width:70px;font-size:.8em}}@media (max-height: 500px) and (orientation: landscape){body{padding:5px}h1{font-size:1.5em;margin-bottom:10px}.score-board,.turn-indicator{margin-bottom:10px}.game-over{padding:10px;margin:10px 0}}