.bitumen-mail-prijs-container {
    max-width: 700px;
    margin: 20px auto;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.bitumen-mail-prijs-container h2 {
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.intro-tekst {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 16px;
}

.aanvraag-form .form-group {
    margin-bottom: 20px;
}

.aanvraag-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.aanvraag-form input[type="text"],
.aanvraag-form input[type="email"],
.aanvraag-form input[type="tel"],
.aanvraag-form input[type="number"],
.aanvraag-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.aanvraag-form input:focus,
.aanvraag-form textarea:focus {
    border-color: #007cba;
    outline: none;
    box-shadow: 0 0 0 2px rgba(0,124,186,0.1);
}

.isolatie-opties {
    display: flex;
    gap: 20px;
    padding: 10px 0;
}

.radio-optie {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
}

.radio-optie input[type="radio"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

.radio-label {
    font-weight: normal;
    color: #333;
}

.submit-btn {
    background: #007cba;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 4px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s;
}

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

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.form-status {
    margin-top: 20px;
}

.form-status .success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
}

.form-status .error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: 15px;
    border-radius: 4px;
}

.form-status .error ul {
    margin: 5px 0 0 20px;
}

@media (max-width: 600px) {
    .bitumen-mail-prijs-container {
        padding: 20px;
    }
    
    .isolatie-opties {
        flex-direction: column;
        gap: 10px;
    }
}