.pdc-calculator {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.pdc-calculator h2 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #333;
}

.pdc-form {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.pdc-form-group {
    margin-bottom: 20px;
}

.pdc-form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.pdc-form-group input,
.pdc-form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    background-color: #fff;
}

.pdc-datepicker {
    cursor: pointer;
}

.pdc-button {
    background: #0066cc;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.pdc-button:hover {
    background: #0052a3;
}

.pdc-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.pdc-results {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.pdc-results table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.pdc-results th,
.pdc-results td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.pdc-results th {
    background-color: #f5f5f5;
    font-weight: 600;
}

.pdc-results tfoot tr {
    font-weight: bold;
    background-color: #f9f9f9;
}

/* Responsive styles */
@media (max-width: 768px) {
    .pdc-calculator {
        padding: 10px;
    }
    
    .pdc-form {
        padding: 15px;
    }

    .pdc-results table {
        display: block;
        overflow-x: auto;
    }
}

/* jQuery UI Datepicker customization */
.ui-datepicker {
    font-size: 14px;
    z-index: 999 !important;
}

.ui-datepicker .ui-datepicker-header {
    background: #0066cc;
    color: white;
}

.ui-datepicker .ui-datepicker-title {
    font-weight: bold;
}

.ui-datepicker .ui-state-active {
    background: #0066cc;
    color: white;
}