: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}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}}.footer{display:flex;justify-content:space-between;align-items:center;background-color:#faf9ff;padding:.8rem 1.5rem;color:#3a3a7a;font-size:.95rem;position:fixed;bottom:0;left:0;width:100%;box-shadow:0 -2px 5px #0000000d}.footer-left{text-align:left;color:#31318955}.footer-center{flex:1;text-align:center;font-weight:700;color:#3a3a7a}.footer-right{display:flex;gap:1rem;justify-content:flex-end}.footer-right .icon{color:#3a3a7a;transition:color .3s ease;display:flex;align-items:center}.footer-right .icon:hover{color:#1d4ed8}.footer-right svg{width:20px;height:20px}#root{width:100vw;max-width:100%;padding:1rem;text-align:center;box-sizing:border-box;overflow-x:hidden}.container{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:15px;justify-content:center;place-items:center;max-width:1200px;margin:0 auto;padding:1rem}main{width:100%;max-width:100vw;overflow-x:hidden;display:flex;flex-direction:column;align-items:center}body{background:radial-gradient(circle at top left,#f0f4f8,#dce3ec);min-height:100vh;margin:0;overflow-x:hidden;display:flex;justify-content:center;align-items:center;flex-direction:column;width:100vw;box-sizing:border-box}.container{display:grid;grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:12px;justify-content:center;place-items:center;width:100%;max-width:800px;margin:0 auto;padding:1rem}.flip-card{width:100%;aspect-ratio:1 / 1;perspective:1000px;display:flex;justify-content:center;align-items:center}.flip-card:hover .flip-card-front{box-shadow:8px 8px 16px #35465d,-8px -8px 16px #fff,0 0 12px #ffd36966}.flip-card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .8s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}.flip-card.active .flip-card-inner{transform:rotateY(180deg)}.flip-card-front,.flip-card-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:10px}.flip-card-front{background:#e0e5ec;box-shadow:6px 6px 12px #a3b1c6,-6px -6px 12px #fff;border-radius:16px}.flip-card-back{background:linear-gradient(145deg,#1e2a38,#0f1923);color:#ffd369;text-shadow:0 2px 4px rgba(0,0,0,.4);transform:rotateY(180deg);display:grid;place-items:center;font-size:50px;box-shadow:inset 4px 4px 8px #00000080,inset -4px -4px 8px #ffffff1a}h2{font-family:Fredoka One,cursive;font-size:3rem;background:linear-gradient(90deg,#3a3a7a,#ff3ec7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:2px 2px 8px rgba(0,0,0,.7);margin-bottom:30px;margin-left:auto;margin-right:auto}.counter{background:linear-gradient(145deg,#ff7b7b,#e65c5c);width:200px;padding:10px;border-radius:16px;display:flex;justify-content:center;margin:0 auto 20px;box-shadow:8px 8px 16px #c94c4c,-8px -8px 16px #ff8c8c,inset 2px 2px 6px #0003,inset -2px -2px 6px #ffffff80}.counter h3{color:#fff;font-weight:600;letter-spacing:1px;text-shadow:0px 1px 2px rgba(0,0,0,.3);font-family:Orbitron,sans-serif}.start-btn{border:none;border-radius:16px;padding:12px 32px;background:linear-gradient(145deg,#fff,#dfe6f1);color:#3a3a7a;font-size:20px;font-weight:700;letter-spacing:1px;cursor:pointer;display:flex;justify-content:center;align-items:center;margin:20px auto;box-shadow:6px 6px 12px #c8c3e5,-6px -6px 12px #fff;transition:all .25s ease-in-out;text-shadow:0 2px 4px rgba(0,0,0,.2)}.start-btn:hover{box-shadow:inset 6px 6px 12px #c8c3e5,inset -6px -6px 12px #fff;transform:scale(.97)}.start-btn:focus{outline:none;box-shadow:0 0 12px #3a3a7a66,inset 4px 4px 8px #c8c3e5,inset -4px -4px 8px #fff}.game-completed,.game-over{background-color:#000000d9;position:fixed;top:0;left:0;width:100%;height:100%;display:grid;place-items:center;animation:fadeIn .5s ease;z-index:999}.game-completed h1{font-size:60px;font-weight:700;text-shadow:2px 2px 10px black}.game-over h1{color:red;font-size:60px;font-weight:700;text-shadow:2px 2px 10px black}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width: 767px){.container{gap:10px}.flip-card-inner{font-size:1.5rem}}@media (max-width: 768px){.container{grid-template-columns:repeat(auto-fit,minmax(60px,1fr));gap:8px;padding:.5rem}.flip-card-back{font-size:1.5rem}h2{font-size:2rem}}