.card-scene{perspective:1000px;width:100%;height:0;padding-bottom:140%;position:relative}.card{cursor:pointer;width:100%;height:100%;transform-style:preserve-3d;-webkit-user-select:none;user-select:none;transition:transform .6s;position:absolute;top:0;left:0}.card.is-flipped{transform:rotateY(180deg)}.card-face{backface-visibility:hidden;border-radius:1rem;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute;box-shadow:0 4px 8px #0003}.card-face-front{color:#ffffff80;text-shadow:0 0 15px #ffffff4d;background-image:radial-gradient(circle,#5c678f 0%,#2a314e 100%);border:4px solid #aeb8d3;font-family:Arial Black,sans-serif;font-size:5rem}.card-face-back{background-color:#f0f0f0;border:4px solid #f7ce68;padding:.5rem;position:relative;transform:rotateY(180deg)}@media (max-width:480px){.card-face{border-radius:.5rem}.card-face-front{border-width:2px;font-size:3rem}.card-face-back{border-width:2px}}
.game-container{flex-direction:column;justify-content:center;align-items:center;gap:2rem;min-height:60vh;padding:2rem 1rem;display:flex}.selection-screen,.finished-screen{text-align:center;background-color:#1e293b;border:1px solid #334155;border-radius:1rem;flex-direction:column;align-items:center;gap:1.5rem;width:90%;max-width:800px;padding:3rem;display:flex;box-shadow:0 8px 16px #0003}.selection-screen h2,.finished-screen h2{color:#e2e8f0;font-size:2rem}.selection-screen p,.finished-screen p{color:#94a3b8}.difficulty-buttons{gap:1rem;margin:1rem 0;display:flex}.difficulty-buttons button{color:#cbd5e1;cursor:pointer;background-color:#334155;border:1px solid #475569;border-radius:.8rem;padding:.8rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s}.difficulty-buttons button:hover{color:#fff;border-color:#818cf8}.difficulty-buttons button.active{color:#fff;border-color:#c084fc;box-shadow:0 0 15px #c084fc66}@media (max-width:480px){.difficulty-buttons{flex-direction:column;width:80%}}.start-button{color:#fff;cursor:pointer;background-image:linear-gradient(90deg,#38bdf8,#818cf8,#c084fc);border:none;border-radius:.8rem;padding:1rem 3rem;font-size:1.2rem;font-weight:700;transition:all .3s;box-shadow:0 4px 15px #818cf84d}.start-button:hover{transform:scale(1.05)translateY(-2px);box-shadow:0 8px 20px #818cf866}.start-button:active{transform:scale(1)}.game-stats{color:#e2e8f0;justify-content:space-between;width:100%;max-width:1100px;font-size:1.5rem;font-weight:700;display:flex}@media (max-width:900px){.game-stats{max-width:90%}}@media (max-width:480px){.game-stats{font-size:1.2rem}}.game-board{gap:1rem;width:100%;max-width:1100px;display:grid}.game-board.difficulty-easy{grid-template-columns:repeat(4,1fr)}.game-board.difficulty-normal{grid-template-columns:repeat(6,1fr)}.game-board.difficulty-hard{grid-template-columns:repeat(8,1fr)}@media (max-width:900px){.game-board.difficulty-normal{grid-template-columns:repeat(4,1fr)}.game-board.difficulty-hard{grid-template-columns:repeat(5,1fr)}}@media (max-width:480px){.game-board{gap:.5rem}.game-board.difficulty-easy,.game-board.difficulty-normal,.game-board.difficulty-hard{grid-template-columns:repeat(4,1fr)}}@keyframes spin{to{transform:translate(-50%,-50%)rotate(360deg)}}