.b2b-demande-form-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.b2b-demande-form-container h2 {
    margin: 0 0 10px 0;
    font-size: 24px;
    color: #333;
}

.b2b-demande-form-container > p {
    margin: 0 0 25px 0;
    color: #666;
}

.b2b-form-group {
    margin-bottom: 20px;
}

.b2b-form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

.b2b-form-group label .required {
    color: #c00;
}

.b2b-form-group label .optional {
    color: #999;
    font-weight: normal;
    font-size: 13px;
}

.b2b-form-group input[type="text"],
.b2b-form-group input[type="email"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.b2b-form-group input[type="text"]:focus,
.b2b-form-group input[type="email"]:focus {
    outline: none;
    border-color: #333;
}

.b2b-form-group input::placeholder {
    color: #aaa;
}

.b2b-submit-btn {
    width: 100%;
    padding: 14px 20px;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.b2b-submit-btn:hover {
    background: #333;
}

.b2b-submit-btn:disabled {
    background: #999;
    cursor: not-allowed;
}

.b2b-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    font-size: 14px;
}

.b2b-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.b2b-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.b2b-demande-form {
    margin-top: 10px;
}