.wa-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 62px;
    height: 62px;
    background: #25D366;
    border-radius: 50%;
    box-shadow: 0 10px 30px rgba(0,0,0,.35);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9999;
    transition: .3s;
}
.wa-btn.offline { background: #9e9e9e; cursor: not-allowed; }
.wa-btn img { width: 34px; }

.wa-popup {
    position: fixed;
    bottom: 105px;
    right: 24px;
    width: 330px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 15px 40px rgba(0,0,0,.3);
    overflow: hidden;
    display: none;
    z-index: 9999;
    animation: popup .25s ease;
}

@keyframes popup {
    from {opacity:0; transform:scale(.9) translateY(10px);}
    to {opacity:1; transform:scale(1) translateY(0);}
}

.wa-header {
    background: linear-gradient(135deg,#25D366,#1ebe5d);
    color: #fff;
    padding: 16px;
    position: relative;
}
.wa-header.offline {
    background: linear-gradient(135deg,#9e9e9e,#757575);
}
.wa-header h4 { margin: 0; font-size: 16px; }
.wa-header span { font-size: 12px; opacity: .9; }

.wa-close {
    position: absolute;
    right: 14px;
    top: 12px;
    font-size: 18px;
    cursor: pointer;
    opacity: .8;
}

.wa-body { padding: 15px; }

.wa-admin {
    display: flex;
    align-items: center;
    padding: 10px;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    margin-bottom: 10px;
    transition: .2s;
}
.wa-admin:hover { background: #f4f4f4; }

.wa-admin.offline {
    pointer-events: none;
    opacity: .5;
}

.wa-admin img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    margin-right: 10px;
}

.wa-admin small {
    display: block;
    font-size: 11px;
    color: #4caf50;
}

.wa-offline-msg {
    text-align: center;
    font-size: 13px;
    color: #666;
    padding: 20px;
}

.wa-footer {
    text-align: center;
    font-size: 11px;
    padding: 10px;
    background: #fafafa;
    color: #777;
}