: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}}:root{--primary-color: #6C5CE7;--primary-light: #A8A4FF;--background-color: #F8F7FF;--card-background: #FFFFFF;--text-color: #2D3436;--text-light: #636E72;--todo-item-bg: #F8F9FC;--todo-item-hover: #EDF1F7;--input-border: #EDF1F7;--input-bg: #F8F9FC;--delete-hover-bg: #FFE0E3;--delete-hover-color: #FF4757;--shadow-color: rgba(108, 92, 231, .1)}:root.dark-mode{--primary-color: #A8A4FF;--primary-light: #6C5CE7;--background-color: #1A1B1E;--card-background: #2D2F34;--text-color: #E4E6EB;--text-light: #B0B3B8;--todo-item-bg: #3A3B3F;--todo-item-hover: #4A4B50;--input-border: #3A3B3F;--input-bg: #3A3B3F;--delete-hover-bg: #3A1D1F;--delete-hover-color: #FF6B6B;--shadow-color: rgba(0, 0, 0, .3)}body{background-color:var(--background-color);margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;transition:background-color .3s ease}#root{max-width:500px;margin:0 auto;padding:2rem 1rem}.todo-container{background-color:var(--card-background);padding:2rem;border-radius:24px;box-shadow:0 10px 30px var(--shadow-color);transition:background-color .3s ease,box-shadow .3s ease}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}h1{color:var(--primary-color);font-size:1.75rem;font-weight:600;margin:0}.theme-toggle{background:none;border:none;font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:50%;transition:transform .3s ease;line-height:1}.theme-toggle:hover{transform:scale(1.1)}.todo-form{display:flex;gap:.75rem;margin-bottom:2rem;position:relative}.todo-input{flex:1;padding:1rem 1.25rem;font-size:1rem;border:2px solid var(--input-border);border-radius:16px;background-color:var(--input-bg);color:var(--text-color);transition:all .2s ease}.todo-input:focus{outline:none;border-color:var(--primary-light);background-color:var(--card-background)}.todo-input::placeholder{color:var(--text-light);opacity:.7}.add-button{padding:1rem 1.5rem;background-color:var(--primary-color);color:#fff;border:none;border-radius:16px;cursor:pointer;font-weight:600;transition:all .2s ease}.add-button:hover{background-color:var(--primary-light);transform:translateY(-1px)}.todo-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}.todo-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;background-color:var(--todo-item-bg);border-radius:16px;transition:all .2s ease}.todo-item:hover{background-color:var(--todo-item-hover)}.todo-text{cursor:pointer;flex:1;color:var(--text-color);font-size:.95rem;transition:all .2s ease;display:flex;align-items:center;gap:.75rem}.todo-text:before{content:"";display:inline-block;width:20px;height:20px;border:2px solid var(--primary-light);border-radius:6px;transition:all .2s ease}.todo-text[style*=line-through]:before{background-color:var(--primary-color);border-color:var(--primary-color);background-image:url("data:image/svg+xml,%3Csvg width='12' height='9' viewBox='0 0 12 9' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4L4.5 7.5L11 1' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E%0A");background-repeat:no-repeat;background-position:center}.delete-button{padding:.5rem;background-color:transparent;color:var(--text-light);border:none;border-radius:8px;cursor:pointer;opacity:0;transition:all .2s ease}.todo-item:hover .delete-button{opacity:1}.delete-button:hover{background-color:#ffe0e3;color:#ff4757}