:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#333;background-color:#f0f2f5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#007bff;text-decoration:inherit}a:hover{color:#0056b3}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1;color:#213547}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#007bff;color:#fff;cursor:pointer;transition:background-color .25s,border-color .25s}button:hover{background-color:#0056b3;border-color:#0056b3}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: dark){:root{color:#ffffffde;background-color:#242424}h1{color:#ffffffde}button{background-color:#646cff}button:hover{background-color:#535bf2}}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.App{display:flex;flex-direction:column;align-items:center;gap:20px}form{display:flex;gap:10px}input[type=text]{padding:10px;border:1px solid #ccc;border-radius:5px;width:300px}ul{list-style:none;padding:0;width:100%;max-width:400px}li{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;border:1px solid #ddd;margin-bottom:8px;border-radius:8px;background-color:#f9f9f9;box-shadow:0 2px 4px #0000000d;color:#333}li.completed span{text-decoration:line-through;color:#999}li span{flex-grow:1;text-align:left;cursor:pointer;padding-right:10px}li button{background-color:#007bff;color:#fff;border:none;padding:8px 12px;border-radius:5px;cursor:pointer;font-size:.9em;transition:background-color .2s ease}li button:hover{background-color:#0056b3}