.arc-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.arc-container h3 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.arc-form {
    margin-bottom: 30px;
}

.arc-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.arc-col {
    flex: 1;
}

.arc-col label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

.arc-col input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.arc-col input:focus {
    outline: none;
    border-color: #007cba;
}

.arc-btn {
    background: #007cba;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    display: block;
    margin: 20px auto 0;
}

.arc-btn:hover {
    background: #005a87;
}

.arc-results {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 6px;
    margin-top: 30px;
}

.arc-results h4 {
    margin-top: 0;
    color: #333;
}

.arc-result-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e1e5e9;
}

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

.arc-result-label {
    font-weight: 600;
    color: #555;
}

.arc-result-value {
    font-weight: 700;
    color: #007cba;
}

.arc-savings {
    color: #28a745 !important;
}

.arc-chart-container {
    margin-top: 30px;
    text-align: center;
}

#arc-chart {
    max-width: 100%;
    height: auto;
}

@media (max-width: 768px) {
    .arc-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .arc-container {
        margin: 10px;
        padding: 15px;
    }
}