body {
    background-color: #f8f9fa;
}
.container {
    max-width: 700px;
}
.calculator-card {
    background: #fff;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
#results-wrapper.hidden {
    display: none;
}
.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid #dee2e6;
}
.result-item:last-child {
    border-bottom: none;
}
.result-label {
    font-weight: bold;
    color: #495057;
}