.lk-float-contact {
    position: fixed;
    bottom: 24px;
    right: 24px;
    left: auto;
    z-index: 999;
}

/* --- Nút chính --- */
.lk-float-btn {
    position: relative;
    z-index: 10;
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 28px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(229,57,53,0.55);
    white-space: nowrap;
    transition: background 0.2s, transform 0.2s;
    letter-spacing: 0.3px;
    font-family: inherit;
}

.lk-float-btn:hover {
    background: #c62828;
    transform: scale(1.05);
}

.lk-float-contact.is-open .lk-float-btn {
    background: #b71c1c;
}

/* --- Icons --- */
.lk-float-icon {
    position: absolute;
    bottom: 5px;
    right: 5px;
    left: auto;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 3px 10px rgba(0,0,0,0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 8;
    opacity: 0;
    transform: translate(0, 0) scale(0.2);
    pointer-events: none;
    transition: opacity 0.35s, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    text-decoration: none;
}

.lk-float-icon img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    display: block;
}

/* --- Vị trí khi mở (cung tròn bên trái) --- */
.lk-float-contact.is-open .lk-float-icon {
    opacity: 1;
    pointer-events: auto;
}

.lk-float-contact.is-open .lk-icon-call {
    transform: translate(8px, -105px) scale(1);
    transition-delay: 0ms;
}

.lk-float-contact.is-open .lk-icon-zalo {
    transform: translate(-72px, -72px) scale(1);
    transition-delay: 60ms;
}

.lk-float-contact.is-open .lk-icon-ms {
    transform: translate(-105px, 8px) scale(1);
    transition-delay: 120ms;
}