: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{font-family:Arial,sans-serif;background:#f4f4f4;margin:0;padding:0}.app{max-width:500px;margin:50px auto;background:#fff;padding:20px;border-radius:10px;box-shadow:0 0 10px #0000001a}h1{text-align:center;color:#333}.input-container{display:flex;margin-bottom:20px}input{flex:1;padding:10px;font-size:16px;border:1px solid #ddd;border-radius:5px 0 0 5px}ul{list-style:none;padding:0}li{display:flex;justify-content:space-between;align-items:center;padding:10px;border-bottom:1px solid #ddd}li span{cursor:pointer;flex:1}body{font-family:Arial,sans-serif;background:#f4f4f4;margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh}.app{width:100%;max-width:500px;background:#fff;padding:20px;border-radius:10px;box-shadow:0 0 10px #0000001a;text-align:center}h1{color:#333;margin-bottom:20px}.input-container{display:flex;justify-content:center;margin-bottom:20px}input{flex:1;padding:10px;font-size:16px;border:1px solid #ddd;border-radius:5px 0 0 5px;min-width:200px}button{padding:10px 15px;font-size:16px;border:none;background:#28a745;color:#fff;border-radius:0 5px 5px 0;cursor:pointer;margin-left:5px}button:hover{opacity:.9}ul{list-style:none;padding:0;margin:0 auto;max-width:400px}li{display:flex;justify-content:space-between;align-items:center;padding:10px;border-bottom:1px solid #ddd;text-align:left}li span{cursor:pointer;flex:1;color:#000}li.completed span{text-decoration:line-through;color:gray}li div button{background:#007bff;margin-left:5px;color:#fff;padding:5px 10px;border-radius:5px}li div button:hover{opacity:.8}li div button:last-child{background:#dc3545}