.solarteflon-calculator {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 800px;
    margin: 20px auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.st-header {
    background: linear-gradient(135deg, #1167B1 0%, #2AA84A 100%);
    color: white;
    padding: 25px;
    text-align: center;
}

.st-header h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.st-header p {
    opacity: 0.9;
}

.st-content {
    display: flex;
    flex-wrap: wrap;
    padding: 20px;
}

.st-calculator {
    flex: 1;
    min-width: 300px;
    padding: 15px;
}

.st-info {
    flex: 1;
    min-width: 300px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
}

.st-form-group {
    margin-bottom: 15px;
}

.st-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #1167B1;
}

.st-form-group input, .st-form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5eb;
    border-radius: 8px;
    font-size: 1rem;
}

.st-form-group input:focus, .st-form-group select:focus {
    outline: none;
    border-color: #2AA84A;
}

.st-btn {
    background: linear-gradient(to right, #1167B1, #2AA84A);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
}

.st-btn:hover {
    opacity: 0.9;
}

.st-results {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 5px solid #1167B1;
}

.st-result-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed #e1e5eb;
}

.st-result-item:last-child {
    border-bottom: none;
}

.st-highlight {
    font-weight: bold;
    color: #2AA84A;
}

.st-chart-container {
    margin-top: 20px;
    height: 250px;
}

.st-info-box {
    background: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.st-info-box h3 {
    color: #1167B1;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.st-benefits-list {
    list-style-type: none;
}

.st-benefits-list li {
    padding: 8px 0;
    border-bottom: 1px solid #f0f4f8;
    display: flex;
    align-items: center;
}

.st-benefits-list li:last-child {
    border-bottom: none;
}

.st-benefits-list li i {
    color: #2AA84A;
    margin-right: 10px;
}

.st-footer {
    text-align: center;
    padding: 15px;
    color: #666;
    font-size: 0.9rem;
    background: #f8fafc;
}

@media (max-width: 768px) {
    .st-content {
        flex-direction: column;
    }
}