.mb-form{max-width:640px;margin:1rem auto;padding:1rem;background:#fff;border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 6px 18px rgba(2,6,23,.06)}
.mb-row{display:flex;flex-direction:column;margin-bottom:12px}
.mb-row label{font-weight:600;margin-bottom:6px}
.mb-row input,.mb-row select{padding:.75rem;border:1px solid #e5e7eb;border-radius:.75rem;font-size:1rem}
.mb-btn{border:0;border-radius:999px;padding:.85rem 1.25rem;font-weight:700;cursor:pointer;background:linear-gradient(90deg,#2563eb,#1d4ed8);color:#fff}
.mb-alert{max-width:640px;margin:0 auto .75rem;border-radius:.75rem;padding:.75rem 1rem;border:1px solid}
.mb-success{background:#ecfdf5;border-color:#10b981;color:#065f46}
.mb-error{background:#fef2f2;border-color:#ef4444;color:#991b1b}