*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:Arial,sans-serif;background-color:#f4f4f4;line-height:1.6;padding:20px 0;min-height:100vh}.container{width:95%;max-width:500px;margin:0 auto;background-color:#fff;padding:15px;border-radius:8px;box-shadow:0 2px 5px #0000001a}h1{text-align:center;color:#333;margin-bottom:20px;font-size:clamp(1.5rem,5vw,2rem)}#todo-form{display:flex;margin-bottom:20px;gap:8px}#todo-input{flex-grow:1;padding:12px;font-size:16px;border:1px solid #ddd;border-radius:8px;min-height:44px}button{padding:12px 20px;background-color:#5cb85c;color:#fff;border:none;cursor:pointer;font-size:16px;border-radius:8px;min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center;touch-action:manipulation}button:hover{background-color:#4cae4c}#todo-list{list-style-type:none}#todo-list li{background-color:#f9f9f9;padding:15px;margin-bottom:10px;display:flex;justify-content:space-between;align-items:center;border-radius:8px;flex-wrap:wrap;gap:10px}.delete-btn{background-color:#d9534f;color:#fff;border:none;padding:8px 15px;border-radius:6px;cursor:pointer;min-height:44px;min-width:44px}.delete-btn:hover{background-color:#c9302c}.completed{text-decoration:line-through;color:#888}.input-group{display:flex;gap:8px;flex:1}select{padding:8px;border:1px solid #ddd;border-radius:8px;background-color:#fff;min-height:44px}.filters{margin:20px 0;display:flex;gap:10px}.filters select{width:100%}.priority-high{border-left:4px solid #dc3545}.priority-normal{border-left:4px solid #ffc107}.priority-low{border-left:4px solid #28a745}.todo-content{display:flex;align-items:center;gap:10px;width:100%}.todo-text{flex:1;cursor:pointer}.priority-select{min-width:100px}@media (max-width: 480px){body{padding:10px 0}.container{width:100%;border-radius:0;padding:10px}#todo-form{flex-direction:column}#todo-input{border-radius:8px;margin-bottom:8px}button{width:100%;border-radius:8px}#todo-list li{padding:12px}.todo-content{flex-wrap:wrap}.priority-select{width:100%;order:2}.delete-btn{width:100%;order:3}.todo-text{width:100%;order:1;margin-bottom:8px}}