body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    color: #333;
}

h1 {
    color: #2c3e50;
    text-align: center;
}

.calculator {
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input, select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #e8f4fc;
    border-radius: 4px;
    display: none;
}

.cost-breakdown {
    margin-top: 10px;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.total-cost {
    font-weight: bold;
    font-size: 1.2em;
    border-top: 1px solid #ccc;
    padding-top: 10px;
    margin-top: 10px;
}

.info-text {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}

.custom-input-container {
    display: none;
    margin-top: 10px;
}

.seo-content {
    margin-top: 40px;
    font-size: 0.9em;
    color: #666;
}

/* Responsive design */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    .calculator {
        padding: 15px;
    }
}