:root{font-family:Inter,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}}#root{max-width:600px;margin:0 auto;padding:2rem;width:100%}.todo-app{background:var(--todo-bg, #ffffff);border-radius:16px;padding:2rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.todo-header{text-align:center;margin-bottom:2rem}.todo-header h1{font-size:2.5rem;margin:0 0 .5rem;background:linear-gradient(135deg,#646cff,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:#888;margin:0;font-size:1rem}.todo-form{display:flex;gap:.5rem;margin-bottom:1.5rem}.todo-input{flex:1;padding:.75rem 1rem;border:2px solid #e5e7eb;border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color .2s,box-shadow .2s;background:var(--input-bg, #ffffff);color:var(--text-color, #213547)}.todo-input:focus{outline:none;border-color:#646cff;box-shadow:0 0 0 3px #646cff1a}.add-btn{padding:.75rem 1.5rem;background:linear-gradient(135deg,#646cff,#a855f7);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:transform .2s,box-shadow .2s}.add-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #646cff66}.add-btn:active{transform:translateY(0)}.filter-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;justify-content:center}.filter-tabs button{padding:.5rem 1rem;background:transparent;border:1px solid #e5e7eb;border-radius:20px;font-size:.875rem;cursor:pointer;transition:all .2s;color:var(--text-color, #213547)}.filter-tabs button:hover{border-color:#646cff;color:#646cff}.filter-tabs button.active{background:linear-gradient(135deg,#646cff,#a855f7);color:#fff;border-color:transparent}.todo-list{display:flex;flex-direction:column;gap:.5rem}.todo-item{display:flex;align-items:center;gap:.75rem;padding:1rem;background:var(--item-bg, #f9fafb);border-radius:10px;transition:all .2s;border:1px solid transparent}.todo-item:hover{border-color:#e5e7eb;box-shadow:0 2px 8px #0000000d}.todo-item.completed{opacity:.6}.todo-item.completed .todo-text{text-decoration:line-through;color:#888}.todo-checkbox{position:relative;cursor:pointer;flex-shrink:0}.todo-checkbox input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.checkmark{display:block;width:24px;height:24px;border:2px solid #d1d5db;border-radius:6px;transition:all .2s}.todo-checkbox:hover .checkmark{border-color:#646cff}.todo-checkbox input:checked~.checkmark{background:linear-gradient(135deg,#646cff,#a855f7);border-color:transparent}.todo-checkbox input:checked~.checkmark:after{content:"✓";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:14px;font-weight:700}.todo-content{flex:1;display:flex;flex-direction:column;min-width:0}.todo-text{font-size:1rem;word-break:break-word;transition:color .2s}.todo-date{font-size:.75rem;color:#888;margin-top:.25rem}.delete-btn{padding:.5rem;background:transparent;border:none;border-radius:6px;cursor:pointer;font-size:1.25rem;opacity:0;transition:all .2s}.todo-item:hover .delete-btn{opacity:1}.delete-btn:hover{background:#fee2e2;transform:scale(1.1)}.empty-state{text-align:center;padding:3rem 1rem;color:#888;font-size:1.1rem}.todo-footer{margin-top:1.5rem;text-align:center}.clear-btn{padding:.5rem 1rem;background:transparent;border:1px solid #ef4444;color:#ef4444;border-radius:20px;font-size:.875rem;cursor:pointer;transition:all .2s}.clear-btn:hover{background:#ef4444;color:#fff}@media (prefers-color-scheme: dark){:root{--todo-bg: #1a1a1a;--input-bg: #2a2a2a;--item-bg: #2a2a2a;--text-color: rgba(255, 255, 255, .87)}.todo-input{border-color:#3a3a3a}.checkmark{border-color:#4a4a4a}.filter-tabs button{border-color:#3a3a3a}}@media (max-width: 600px){#root{padding:1rem}.todo-app{padding:1.5rem}.todo-header h1{font-size:2rem}.filter-tabs{flex-wrap:wrap}.delete-btn{opacity:1}}