button{background-color:#4a90e2;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;cursor:pointer;transition:background-color .3s ease,transform .3s ease}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f0f8ff;color:#333;margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh;min-height:100vh;box-sizing:border-box}#app{display:flex;justify-content:center;align-items:center;width:100%;height:100%;padding:20px}h1{font-size:2rem;color:#444}button{background-color:#4a90e2;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;cursor:pointer;transition:background-color .3s ease,transform .3s ease;margin-right:10px;margin-left:10px}button:hover{background-color:#357ab7;transform:scale(1.05)}button:focus{outline:none}a{text-decoration:none}.home{text-align:center;background-color:#fff;border-radius:15px;padding:40px;box-shadow:0 4px 12px #0000001a;width:100%;max-width:500px}.home button{margin-top:20px}.match-game[data-v-a2c57039]{text-align:center;padding:40px}h2[data-v-a2c57039]{margin-bottom:20px;color:#333}.difficulty-selector[data-v-a2c57039],.theme-toggle[data-v-a2c57039]{margin-bottom:20px}.difficulty-selector button[data-v-a2c57039],.theme-toggle button[data-v-a2c57039]{background-color:#4a90e2;color:#fff;padding:10px 20px;border-radius:8px;font-size:1rem;margin:5px;cursor:pointer;transition:background-color .3s ease}.difficulty-selector button[data-v-a2c57039]:hover,.theme-toggle button[data-v-a2c57039]:hover{background-color:#357ab7}.grid[data-v-a2c57039]{display:grid;gap:10px;justify-content:center;margin:20px auto}.card[data-v-a2c57039]{width:100px;height:100px;position:relative;cursor:pointer;perspective:1000px}.card-inner[data-v-a2c57039]{width:100%;height:100%;position:absolute;transform-style:preserve-3d;transition:transform .5s}.card.flipped .card-inner[data-v-a2c57039]{transform:rotateY(180deg)}.card-front[data-v-a2c57039]{display:flex;align-items:center;justify-content:center;width:100%;height:100%;background-color:#fff;border:2px solid #4a90e2;border-radius:8px;font-size:2rem;backface-visibility:hidden;transform:rotateY(180deg)}.card-back[data-v-a2c57039]{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#4a90e2;border-radius:8px;backface-visibility:hidden}.card.flipped .card-front[data-v-a2c57039]{backface-visibility:visible}.card.flipped .card-back[data-v-a2c57039]{display:none}.restart-button[data-v-a2c57039],.home-button[data-v-a2c57039]{background-color:#4a90e2;color:#fff;padding:12px 24px;border-radius:8px;font-size:1rem;margin-top:20px;cursor:pointer;transition:background-color .3s ease,transform .3s ease}.restart-button[data-v-a2c57039]:hover,.home-button[data-v-a2c57039]:hover{background-color:#357ab7;transform:scale(1.05)}.card.flashing-red[data-v-a2c57039]{animation:flashRed-a2c57039 .5s ease-in-out}@keyframes flashRed-a2c57039{0%{background-color:#fcc}50%{background-color:#ff4d4d}to{background-color:#fcc}}.card.flashing-green[data-v-a2c57039]{animation:flashGreen-a2c57039 .5s ease-in-out}@keyframes flashGreen-a2c57039{0%{background-color:#cfc}50%{background-color:#6f6}to{background-color:#cfc}}.add-question[data-v-4671d6d9]{text-align:center;background-color:#fff;border-radius:15px;padding:40px;box-shadow:0 4px 12px #0000001a;width:100%;max-width:500px;margin:0 auto}h2[data-v-4671d6d9]{margin-bottom:20px;color:#333}label[data-v-4671d6d9]{display:block;margin-top:10px}input[data-v-4671d6d9]{width:100%;padding:10px;margin-top:5px;border:1px solid #ddd;border-radius:8px}button[data-v-4671d6d9]{margin-top:20px;padding:12px 24px;margin-right:10px;margin-left:10px}.manage-questions-button[data-v-4671d6d9]{margin-top:30px;background-color:#4a90e2;color:#fff;padding:12px 24px;border-radius:8px;font-size:1rem;cursor:pointer;transition:background-color .3s ease,transform .3s ease}.manage-questions-button[data-v-4671d6d9]:hover{background-color:#357ab7;transform:scale(1.05)}form[data-v-4671d6d9]{display:flex;flex-direction:column}