#soap-calculator-container {
    max-width: 800px;
    margin: 20px;
    padding: 20px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: Arial, sans-serif;
    color: #555;
}

#soap-calculator-container h3 {
    margin-top: 0;
    margin-bottom: 15px;
}

#soap-calculator-container h4 {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

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

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

.form-group input {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 3px;
    width: 100%;
    max-width: 200px;
}

.oil-row, .additive-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.oil-row select, .additive-row select {
    flex: 1;
    min-width: 150px;
}

.oil-row input, .additive-row input {
    width: 80px;
}

.remove-oil, .remove-additive {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
}

.remove-oil:hover, .remove-additive:hover {
    background-color: #c0392b;
}

#add-oil, #add-additive, #calculate-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 3px;
    cursor: pointer;
    margin: 10px 0;
}

#add-oil:hover, #add-additive:hover, #calculate-button:hover {
    background-color: #2980b9;
}

#results-container {
    background-color: #e8f4f8;
    border: 1px solid #bde0f0;
    border-radius: 5px;
    margin-top: 20px;
    padding: 15px;
}

.result-item {
    margin-bottom: 10px;
    padding: 8px;
    background-color: white;
    border-radius: 3px;
}

.total-weight {
    font-weight: bold;
    font-size: 1.1em;
    margin-top: 10px;
    padding: 10px;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 3px;
}