.payment-success-box {
    margin-top: 28px;
    padding: 28px 24px;
    background: #ffffff;
    border: 1px solid #e4e8eb;
    border-radius: 18px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.05);
}

.payment-success-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: #e9f9ef;
    color: #25D366;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: 700;
}

.payment-success-box h3 {
    margin: 0 0 10px;
    font-size: 21px;
    color: #102f36;
    font-weight: 700;
}

.payment-success-box p {
    margin: 0 auto 20px;
    max-width: 520px;
    font-size: 14px;
    line-height: 1.7;
    color: #627077;
}

.whatsapp-payment-btn {
    width: 100%;
    max-width: 390px;
    min-height: 54px;
    margin: 0 auto;
    padding: 14px 20px;
    background: #25D366;
    color: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
    transition: 0.25s ease;
    box-sizing: border-box;
}

.whatsapp-payment-btn:hover {
    background: #1ebe5d;
    transform: translateY(-2px);
    box-shadow: 0 7px 18px rgba(37, 211, 102, 0.25);
}

.whatsapp-payment-btn svg {
    width: 23px;
    height: 23px;
    flex-shrink: 0;
}

.payment-note {
    display: block;
    margin-top: 13px;
    font-size: 12px;
    color: #87959a;
}

/* Mobile */
@media (max-width: 576px) {
    .payment-success-box {
        margin-top: 20px;
        padding: 22px 16px;
        border-radius: 15px;
    }

    .payment-success-box h3 {
        font-size: 18px;
    }

    .payment-success-box p {
        font-size: 13px;
    }

    .whatsapp-payment-btn {
        max-width: 100%;
        min-height: 52px;
        padding: 13px 12px;
        font-size: 14px;
    }
}