.reveal-button{background:#f39c12;color:white;border:none;padding:15px 30px;font-size:1.1em;border-radius:8px;cursor:pointer;transition:all .3s ease;width:100%;margin-top:15px}.reveal-button:hover{background:#e67e22;transform:scale(1.05)}.hidden-content{display:none;background:#ecf0f1;padding:20px;margin-top:15px;border-radius:8px;border-left:5px solid #27ae60}.calc-button.active{background:#27ae60;color:white}.tracker-item.checked .checkbox{background:#27ae60;position:relative}.tracker-item.checked .checkbox::after{content:"✓";position:absolute;color:white;font-size:18px;top:50%;left:50%;transform:translate(-50%,-50%)}