: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:0 auto;padding:20px;font-family:Arial,sans-serif}.app-header{text-align:center;margin-bottom:30px}.app-header h1{color:#333;margin:0}.app-main{display:flex;flex-direction:column;gap:20px}.add-todo-form{display:flex;gap:10px;align-items:center}.todo-input{flex:1;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:16px}.btn{padding:10px 15px;border:none;border-radius:4px;cursor:pointer;font-size:14px;transition:background-color .2s}.btn-add{background-color:#4caf50;color:#fff}.btn-add:hover{background-color:#45a049}.btn-edit{background-color:#2196f3;color:#fff;margin-right:5px}.btn-edit:hover{background-color:#1976d2}.btn-delete{background-color:#f44336;color:#fff}.btn-delete:hover{background-color:#da190b}.btn-save{background-color:#4caf50;color:#fff;margin-right:5px}.btn-save:hover{background-color:#45a049}.btn-cancel{background-color:#9e9e9e;color:#fff}.btn-cancel:hover{background-color:#757575}.todo-item{display:flex;align-items:center;padding:15px;border:1px solid #eee;border-radius:4px;background-color:#fafafa;transition:all .2s}.todo-item:hover{box-shadow:0 2px 8px #0000001a}.todo-item.completed{opacity:.7;background-color:#f0f0f0}.todo-content{display:flex;align-items:center;flex:1;gap:10px}.todo-edit{display:flex;align-items:center;gap:10px;width:100%}.todo-checkbox{transform:scale(1.2);cursor:pointer}.todo-text{flex:1;font-size:16px}.todo-item.completed .todo-text{text-decoration:line-through;color:#888}.todo-actions{display:flex;gap:5px}.empty-state{text-align:center;padding:40px;color:#888;font-style:italic}.loading,.error{text-align:center;padding:40px;font-size:18px}.error{color:#f44336}@media(max-width:600px){.App{padding:10px}.add-todo-form{flex-direction:column;align-items:stretch}.todo-content,.todo-edit{flex-direction:column;align-items:flex-start;gap:10px}.todo-actions{align-self:flex-end}}