.calculator{background:#fff;box-shadow:0 6px 12px rgba(0,0,0,.15);border-radius:16px;padding:40px;width:100%;max-width:700px;max-height:85vh;overflow-y:auto;border:1px solid #e3e3e3;transition:transform .3s ease,box-shadow .3s ease}.calculator:hover{transform:translateY(-5px);box-shadow:0 10px 20px rgba(0,0,0,.2)}.calculator h1{text-align:center;color:#007bff;font-size:2.2rem;margin-bottom:30px;font-weight:700}.results div{margin-bottom:20px;font-size:1.1rem;color:#444}.results div strong{font-weight:700;color:#007bff}.cost-item{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;padding:10px;background:#fff;border:1px solid #ccc;border-radius:8px;box-shadow:0 2px 4px rgba(0,0,0,.1)}.cost-item input[type=text],.cost-item input[type=number]{flex:1;margin-right:10px;padding:10px;font-size:.9rem;border:1px solid #ddd;border-radius:6px;background-color:#f9f9f9}.cost-item button{padding:8px 12px;background-color:#dc3545;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.9rem}.cost-item button:hover{background-color:#c82333}