body, .bg-auth {
    background: linear-gradient(135deg, #f0f4f9 0%, #cbe0ff 100%);
}

.register-card {
    border-radius: 1.5rem;
    box-shadow: 0 2px 30px 0 rgba(44, 85, 130, 0.10);
    background: #fff;
    padding: 2.2rem 2.3rem 1.5rem 2.3rem;
    max-width: 430px;
    width: 100%;
}

.register-header {
    background: linear-gradient(90deg, #005bea, #3bb2b8);
    border-radius: 1.5rem 1.5rem 0 0;
    color: #fff;
    text-align: center;
    padding: 1.7rem 1rem 1rem 1rem;
    margin: -2.2rem -2.3rem 2.1rem -2.3rem;
}

    .register-header i {
        font-size: 2.2rem;
        margin-bottom: .5rem;
    }

.form-select, .form-control {
    border-radius: 0.8rem;
    font-size: 1.05rem;
}

.btn-auth {
    background: linear-gradient(90deg, #005bea, #3bb2b8);
    border: none;
    border-radius: 0.8rem;
    font-weight: 600;
    font-size: 1.1rem;
    transition: 0.15s;
}

    .btn-auth:hover, .btn-auth:focus {
        background: linear-gradient(90deg, #3bb2b8, #005bea);
        box-shadow: 0 2px 8px 0 #a9d4f4;
    }

.register-footer {
    margin-top: 1.2rem;
    text-align: center;
}

    .register-footer small {
        color: #7a869a;
    }

@media (max-width: 600px) {
    .register-card {
        padding: 1.1rem 0.4rem 1.1rem 0.4rem;
        max-width: 99vw;
    }

    .register-header {
        margin-left: -0.4rem;
        margin-right: -0.4rem;
    }
}