.sd-fixed-contact {
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-end;
}

.sd-fixed-contact::after {
    content: "";
    position: absolute;
    right: 34px;
    top: 18px;
    bottom: 18px;
    width: 2px;
    background: rgba(0, 0, 0, 0.08);
    z-index: 0;
}

.sd-fixed-contact-toggle {
    display: none;
    position: relative;
    z-index: 1;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 3px solid rgba(0, 0, 0, 0.08);
    background: linear-gradient(135deg, #0068ff, #00a2ff);
    color: #fff;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease;
}

.sd-fixed-contact-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.sd-fixed-contact-toggle-icon {
    font-size: 24px;
    line-height: 1;
}

.sd-fixed-contact-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sd-fixed-contact-btn {
    position: relative;
    z-index: 1;
    width: 68px;
    height: 68px;
    border-radius: 50%;
    border: 3px solid rgba(0, 0, 0, 0.08);
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    transition: transform .2s ease, box-shadow .2s ease;
}

.sd-fixed-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14);
}

.sd-fixed-contact-inner {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 22px;
    line-height: 1;
}

.sd-fixed-contact-icon {
    width: 100%;
    height: 100%;
    border-radius: inherit;
    object-fit: contain;
    display: block;
}

.sd-fixed-contact-zalo .sd-fixed-contact-inner {
    background: #fff;
    color: #0068ff;
    /* border: 2px solid #0068ff; */
    font-size: 13px;
    font-weight: 800;
}

@media (max-width: 767.98px) {
    .sd-fixed-contact {
        right: 10px;
        gap: 10px;
    }
    .sd-fixed-contact-btn {
        width: 56px;
        height: 56px;
    }
    .sd-fixed-contact-inner {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    .sd-fixed-contact-zalo .sd-fixed-contact-inner {
        font-size: 11px;
    }
    .sd-fixed-contact::after {
        right: 28px;
    }

    .sd-fixed-contact-list {
        gap: 10px;
    }
}

@media (max-width: 599.98px) {
    .sd-fixed-contact {
        top: auto;
        right: 20px;
        bottom: 20px;
        transform: none;
        gap: 0;
    }

    .sd-fixed-contact::after {
        display: none;
    }

    .sd-fixed-contact-toggle {
        display: inline-flex;
        width: 56px;
        height: 56px;
    }

    .sd-fixed-contact-toggle-icon {
        font-size: 22px;
    }

    .sd-fixed-contact-list {
        margin-bottom: 0;
    }

    .sd-fixed-contact.is-collapsible .sd-fixed-contact-list {
        display: none;
    }

    .sd-fixed-contact.is-collapsible.is-expanded .sd-fixed-contact-list {
        display: flex;
    }

    .sd-fixed-contact.is-collapsible.is-expanded .sd-fixed-contact-toggle {
        display: none;
    }

    .sd-fixed-contact.is-collapsible.is-expanded .sd-fixed-contact-list {
        margin-bottom: 0;
    }
}