.soil-calculator-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: inline-block;
    min-width: 150px;
    margin-right: 10px;
}

.form-group input, .form-group select {
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 3px;
    width: 120px;
}

.unit {
    margin-left: 5px;
    color: #666;
}

button {
    padding: 8px 15px;
    background: #0073aa;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    margin-right: 10px;
}

button:hover {
    background: #005177;
}

#results {
    margin-top: 20px;
    padding: 15px;
    background: #e7f5ff;
    border-radius: 5px;
}

.status-message {
    margin-top: 10px;
    padding: 10px;
    border-radius: 3px;
    background: #d4edda;
    color: #155724;
    text-align: center;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
}