: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}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Helvetica Neue,Arial,sans-serif;line-height:1.6;color:#333;background-color:#f8f9fa}#root{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;min-height:100vh;background-color:#edf2f7}.container{max-width:800px;margin:0 auto;padding:20px;background-color:#fff;border-radius:12px;box-shadow:0 4px 12px #00000014;min-height:85vh}@media (max-width: 768px){.container{border-radius:0;min-height:100vh;width:100%;height:100%;padding-block:56px;padding-inline:20px}}h1{font-size:1.8rem;margin-bottom:1.5rem;color:#5a67d8;font-weight:600;text-align:center}h2{font-size:1.4rem;margin:1.5rem 0 1rem;color:#4c51bf;font-weight:500}.add-task-form{display:flex;margin-bottom:1.5rem;gap:10px}.add-task-form input{flex:1;padding:12px 16px;border:1px solid #e2e8f0;border-radius:8px;font-size:1rem;transition:border-color .2s,box-shadow .2s}.add-task-form input:focus{outline:none;border-color:#7f9cf5;box-shadow:0 0 0 3px #6875f533}.add-task-form input::placeholder{color:#a0aec0}.add-task-form button{padding:12px 20px;background-color:#6875f5;color:#fff;border:none;border-radius:8px;font-size:.95rem;font-weight:500;cursor:pointer;transition:background-color .2s,transform .1s}.add-task-form button:hover:not(:disabled){background-color:#5a67d8}.add-task-form button:active:not(:disabled){transform:translateY(1px)}.add-task-form button:disabled{background-color:#cbd5e0;cursor:not-allowed}.error-message{background-color:#fed7d7;color:#e53e3e;padding:12px;border-radius:8px;margin-bottom:1rem;font-weight:500}.task-list{list-style:none;margin-top:1rem;margin-bottom:1rem}.task-list li{display:flex;align-items:center;padding:12px 16px;border:1px solid #e2e8f0;border-radius:8px;margin-bottom:8px;transition:background-color .2s,transform .1s}.task-list li:hover{background-color:#f7fafc}.task-list li.selected{background-color:#ebf4ff;border-color:#a3bffa}.task-list input[type=checkbox]{width:20px;height:20px;margin-right:12px;border-radius:4px;cursor:pointer;accent-color:#6875f5}.task-list label{flex:1;font-size:1rem;cursor:pointer}.button-group{display:flex;gap:10px;margin-bottom:1rem;flex-wrap:wrap}@media (max-width: 600px){.button-group{flex-direction:column}}.button-group button{flex:1;padding:10px 16px;background-color:#6875f5;color:#fff;border:none;border-radius:8px;font-size:.9rem;font-weight:500;cursor:pointer;transition:background-color .2s,transform .1s;display:flex;align-items:center;justify-content:center}.button-group button:disabled{background-color:#cbd5e0;cursor:not-allowed}.button-group button:hover:not(:disabled){background-color:#5a67d8}.button-group button:active:not(:disabled){transform:translateY(1px)}.button-group .delete-button{background-color:#f56565}.button-group .delete-button:hover:not(:disabled){background-color:#e53e3e}.close-button{display:block;width:100%;max-width:200px;margin:2rem auto 0;padding:10px 16px;background-color:#a0aec0;color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:background-color .2s,transform .1s}.close-button:hover{background-color:#718096}.close-button:active{transform:translateY(1px)}.loading{display:flex;justify-content:center;align-items:center;min-height:100vh;font-size:1.2rem;color:#6875f5;font-weight:500}