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ease}.todo-input-button:before{background:linear-gradient(90deg,#0000,#fff3,#0000);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left .5s;width:100%}.todo-input-button:hover{box-shadow:0 8px 25px #667eea80;transform:translateY(-2px)}.todo-input-button:hover:before{left:100%}.todo-input-button:active{box-shadow:0 4px 15px #667eea66;transform:translateY(0)}.todo-input-button:focus{outline:2px solid #667eea;outline-offset:2px}@media (max-width:480px){.todo-input-form{flex-direction:column;gap:15px}.todo-input{font-size:16px;padding:14px 16px}.todo-input-button{padding:14px 20px;width:100%}}.todo-input-button:disabled{cursor:not-allowed;opacity:.6}.todo-input-button:disabled,.todo-input-button:disabled:hover{box-shadow:0 4px 15px #667eea33;transform:none}.todo-input-button:disabled:before{display:none}.todo-item{align-items:center;animation:slideInUp .4s ease-out;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffe6;border:1px solid #ffffff4d;border-radius:16px;box-shadow:0 4px 15px #00000014;display:flex;margin-bottom:12px;overflow:hidden;padding:16px 20px;position:relative;transition:all .3s cubic-bezier(.4,0,.2,1)}.todo-item:before{background:linear-gradient(90deg,#0000,#fff6,#0000);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left .6s;width:100%}.todo-item:hover{border-color:#667eea4d;box-shadow:0 8px 25px #0000001f;transform:translateY(-2px)}.todo-item:hover:before{left:100%}.todo-item.completed{background:#f8fafccc;opacity:.8;transform:scale(.98)}.todo-item.completed:hover{transform:translateY(-1px) scale(.98)}.todo-checkbox{accent-color:#667eea;cursor:pointer;height:20px;margin-right:16px;transform:scale(1.2);transition:transform .2s ease;width:20px}.todo-checkbox:hover{transform:scale(1.3)}.todo-checkbox:focus{border-radius:2px;outline:2px solid #667eea;outline-offset:2px}.todo-text{border-radius:8px;color:#374151;cursor:pointer;flex:1 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#ef4444;outline-offset:2px}.todo-delete-button:active{transform:scale(.95)}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes strikeThrough{0%{text-decoration:none}to{text-decoration:line-through}}@media (max-width:480px){.todo-item{margin-bottom:10px;padding:12px 16px}.todo-checkbox{margin-right:12px;transform:scale(1.1)}.todo-text{font-size:15px;padding:6px 8px}.todo-delete-button{font-size:16px;height:32px;width:32px}}.todo-stats{animation:fadeIn .5s ease-out;margin-bottom:20px;text-align:center}.stats-text{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fff9;border:1px solid #ffffff4d;border-radius:20px;color:#6b7280cc;display:inline-block;font-size:14px;font-weight:500;margin:0;padding:8px 16px}.todo-list{animation:fadeIn .6s ease-out;list-style:none;margin:0;padding:0}.empty-state{animation:fadeIn .8s ease-out;color:#6b7280cc;padding:60px 20px;text-align:center}.empty-state p{font-size:18px;font-weight:300;line-height:1.6;margin:0 0 20px}.empty-state:before{animation:float 3s ease-in-out infinite;content:"📝";display:block;font-size:4rem;margin-bottom:20px;opacity:.6}.sr-only{clip:rect(0,0,0,0);border:0;height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;white-space:nowrap;width:1px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media (max-width:480px){.todo-stats{margin-bottom:15px}.stats-text{font-size:13px;padding:6px 12px}.empty-state{padding:40px 15px}.empty-state p{font-size:16px}.empty-state:before{font-size:3rem;margin-bottom:15px}}*{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0;padding:0}.App{background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;position:relative;text-align:center}.App:before{background:url("data:image/svg+xml;charset=utf-8,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='2' fill='%23fff' fill-opacity='.05' fill-rule='evenodd'/%3E%3C/svg%3E") repeat;bottom:0;content:"";left:0;pointer-events:none;position:absolute;right:0;top:0}.App-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff1a;border-bottom:1px solid #ffffff1a;color:#fff;margin-bottom:30px;padding:30px 20px;position:relative;z-index:1}.App-header h1{font-size:2.5rem;font-weight:700;letter-spacing:-.5px;margin:0 0 10px;text-shadow:0 2px 4px #0000004d}.App-header p{font-size:1.1rem;font-weight:300;margin:0;opacity:.9}main{padding:20px;position:relative;z-index:1}.todo-container{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border:1px solid #fff3;border-radius:20px;box-shadow:0 20px 40px #0000001a;margin:0 auto;max-width:600px;padding:30px}@media (max-width:768px){.App-header{padding:20px 15px}.App-header h1{font-size:2rem}.App-header p{font-size:1rem}main{padding:15px}.todo-container{border-radius:15px;margin:0 10px;padding:20px 15px}}@media (max-width:480px){.App-header h1{font-size:1.8rem}.todo-container{margin:0 5px;padding:15px}}