: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}}.app{max-width:600px;margin:50px auto;text-align:center;font-family:sans-serif;display:flex;background-color:#e9e9e9}.main-content{flex:1;padding:20px}.input-area{justify-content:center;margin-bottom:10px}input{padding:8px;width:200px}button{padding:8px 16px;cursor:pointer}.task-list{list-style:none;padding:0}.sidebar{height:100vh;background-color:#333;color:#fff;transition:width .3s;overflow-x:hidden}.sidebar.open{width:100px}.sidebar.closed{width:50px}.toggle-btn{width:100%;text-align:right;background:none;border:none;color:#fff;cursor:pointer;padding:10px}.sidebar ul{list-style:none;padding:0}.sidebar li{padding:15px;white-space:nowrap}