.messages-float {
    position: fixed;
    left: 24px;
    bottom: 24px;
    z-index: 1100;
    width: 58px;
    height: 58px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, #1266d6, #074391);
    color: #fff;
    box-shadow: 0 10px 25px rgba(7, 67, 145, .32);
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
}

.messages-float:hover,
.messages-float:focus-visible {
    color: #fff;
    transform: translateY(-3px) scale(1.04);
    box-shadow: 0 14px 30px rgba(7, 67, 145, .42);
}

.messages-float:focus-visible {
    outline: 3px solid rgba(18, 102, 214, .3);
    outline-offset: 3px;
}

.messages-float > i { font-size: 1.45rem; }

.messages-float__badge {
    position: absolute;
    top: -6px;
    right: -7px;
    min-width: 23px;
    height: 23px;
    padding: 0 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #fff;
    border-radius: 999px;
    background: #dc2626;
    color: #fff;
    font-family: Arial, sans-serif;
    font-size: .72rem;
    font-weight: 700;
    line-height: 1;
}

.messages-float__badge.is-hidden { display: none; }
.messages-float.has-unread { animation: messages-float-pulse 2s infinite; }

@keyframes messages-float-pulse {
    0%, 100% { box-shadow: 0 10px 25px rgba(7, 67, 145, .32); }
    50% { box-shadow: 0 10px 0 9px rgba(18, 102, 214, .12), 0 10px 25px rgba(7, 67, 145, .32); }
}

@media (max-width: 640px) {
    .messages-float { width: 52px; height: 52px; left: 16px; bottom: 16px; }
}