.mb-container {
    max-width: 500px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: #ffffff !important;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}
.mb-container h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    text-align: center;
}
.mb-group {
    margin-bottom: 1.25rem;
}
.mb-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #4a5568;
}
.mb-form input[type="text"],
.mb-form input[type="tel"],
.mb-form input[type="datetime-local"],
.mb-form select {
    width: 100% !important;
    padding: 0.75rem 1rem !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 8px !important;
    box-sizing: border-box !important;
    background-color: #f8fafc !important;
    font-size: 1rem !important;
    color: #333 !important;
}
.mb-btn {
    width: 100%;
    padding: 0.75rem;
    background: #2b6cb0;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}
.mb-btn:hover {
    background: #1a446c;
}
.mb-alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
}
.mb-success { background: #f0fff4; color: #38a169; border: 1px solid #c6f6d5; }
.mb-error { background: #fff5f5; color: #e53e3e; border: 1px solid #fed7d7; }