#pbc-wrapper {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    max-width: 800px;
    margin: 20px auto;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#pbc-title {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 10px;
}

#pbc-text {
    text-align: center;
    color: #555;
    margin-bottom: 30px;
    line-height: 1.6;
}

.pbc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

@media (max-width: 600px) {
    .pbc-grid { grid-template-columns: 1fr; }
}

.pbc-input-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    color: #333;
}

.pbc-input-group select {
    width: 100%;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 16px;
}

.pbc-results-box {
    background: #fff;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    margin-bottom: 30px;
    border-left: 5px solid #27ae60;
}

.pbc-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.pbc-row.highlight {
    border-bottom: none;
    margin-top: 10px;
    padding-top: 15px;
    font-weight: bold;
    color: #27ae60;
    align-items: center;
}

.pbc-value { font-weight: 600; color: #333; }
.pbc-value-big { font-size: 1.4em; }

.pbc-footer-section {
    text-align: center;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}

.pbc-footer-section h3 { margin-bottom: 10px; color: #d35400; }
.pbc-footer-section p { font-size: 0.9em; color: #666; margin-bottom: 20px; }

.pbc-btn {
    background-color: #2c3e50;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.pbc-btn:hover { background-color: #34495e; }