.er-referral-product-box {
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    margin-bottom: 2em;
    background: #fafafa;
    padding: 2em;
    text-align: center;
}
.er-product-img {
    width: 150px;
    height: auto;
    margin-bottom: 1em;
    border-radius: 4px;
}
.er-referral-email-form {
    margin-top: 1em;
}
.er-referral-email-form input[type="email"] {
    padding: 0.5em;
    width: 60%;
    margin-right: 1em;
}
.er-referral-email-form .button {
    background: #007cba;
    color: #fff;
    border: none;
    padding: 0.5em 1.2em;
    border-radius: 3px;
    cursor: pointer;
}
.er-status.verified { color: green; }
.er-status.not-verified { color: #999; }
.er-unlock-btn.unlocked { background: #28a745; }
.er-unlock-btn.locked { background: #ccc; cursor: not-allowed; }