.calc-button{background:#16a085;color:white;border:none;padding:12px 25px;border-radius:8px;cursor:pointer;font-size:clamp(.95rem,2.5vw,1.05rem);transition:all .3s ease;font-weight:600}.calc-button:hover{background:#138d75;transform:scale(1.05)}.checklist-item.checked{background:#c8e6c9;border-left-color:#4caf50;text-decoration:line-through;opacity:.7}