.container{background:#073642;border-radius:10px;box-shadow:0 10px 40px #00000080;padding:40px;width:100%;max-width:500px;border:1px solid #586e75}h1{color:#268bd2;margin-bottom:10px;text-align:center}.subtitle{color:#839496;font-size:14px;text-align:center;margin-bottom:30px}.todo-form{display:flex;gap:10px;margin-bottom:30px;flex-wrap:wrap}.todo-input{flex:2;min-width:200px;padding:12px 15px;border:2px solid #586e75;border-radius:5px;font-size:16px;transition:border-color .3s;background:#002b36;color:#839496}.todo-input:focus{outline:none;border-color:#268bd2}.category-select{flex:1;min-width:120px;padding:12px 15px;border:2px solid #586e75;border-radius:5px;font-size:16px;background:#002b36;color:#839496;cursor:pointer;transition:border-color .3s}.category-select:focus{outline:none;border-color:#268bd2}.add-button{padding:12px 25px;background:#268bd2;color:#fdf6e3;border:none;border-radius:5px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.add-button:hover{transform:translateY(-2px);box-shadow:0 5px 15px #268bd266;background:#2aa198}.add-button:active{transform:translateY(0)}.todo-list{list-style:none}.todo-item{background:#002b36;padding:15px;margin-bottom:10px;border-radius:5px;display:flex;justify-content:space-between;align-items:center;animation:slideIn .3s ease;border:1px solid #586e75}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.todo-content{flex:1;display:flex;flex-direction:column;gap:5px}.todo-text{color:#93a1a1;font-size:16px}.todo-category{color:#2aa198;font-size:12px;font-weight:600}.todo-id{color:#586e75;font-size:12px;margin-right:10px}.delete-button{padding:6px 15px;background:#dc322f;color:#fdf6e3;border:none;border-radius:4px;font-size:14px;cursor:pointer;transition:background .2s}.delete-button:hover{background:#cb4b16}.empty-state{text-align:center;padding:40px 20px;color:#586e75}.empty-state-icon{font-size:48px;margin-bottom:10px}.error-message{background:#dc322f;color:#fdf6e3;padding:10px;border-radius:5px;margin-bottom:20px;text-align:center;animation:slideIn .3s ease;border:1px solid #cb4b16}.loading{text-align:center;padding:20px;color:#586e75}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#002b36;min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}#root{width:100%;display:flex;justify-content:center;align-items:center}