#cs-thamibutton-wrapper {
    position: fixed;
    top: 50%;
    left: -220px; /* Initially hide the submenu */
    transform: translateY(-50%);
    z-index: 999999;
    transition: left 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    font-family: 'Roboto', 'Arial', sans-serif;
}

#cs-thamibutton-wrapper.is-open {
    left: 0 !important;
}

.cs-thamibutton-container {
    display: flex;
    align-items: flex-start;
}

/* Submenu Styles */
.cs-thamibutton-submenu {
    width: 220px;
    background: #b21e23; /* Red color matching screenshot */
    border-radius: 0 0 10px 0;
    overflow: hidden;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
}

.cs-thamibutton-submenu-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: #fff !important;
    text-decoration: none !important;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transition: background 0.2s;
    font-size: 13px;
}

.cs-thamibutton-submenu-item:last-child {
    border-bottom: none;
}

.cs-thamibutton-submenu-item:hover {
    background: rgba(0,0,0,0.2);
}

.cs-thamibutton-submenu-item img {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

/* Main Buttons Styles */
.cs-thamibutton-main-buttons {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cs-thamibutton-main-btn {
    display: flex;
    align-items: center;
    background: #e3e2e2;
    padding: 8px 10px 8px 10px;
    border-radius: 0 5px 5px 0;
    color: #2b2c2c !important;
    text-decoration: none !important;
    cursor: pointer;
    min-width: 115px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
    transition: background 0.2s;
}

.cs-thamibutton-main-btn:hover {
    background: #d4d3d3;
}

.cs-thamibutton-btn-text {
    flex: 1;
    font-weight: 700;
    font-size: 13px;
    line-height: 1.2;
    text-transform: uppercase;
    margin-right: 10px;
}

@media (min-width: 1023px) {
    .cs-thamibutton-btn-text {
        flex: 0 0 50px !important;
        width: 48px !important;
        white-space: normal;
    }
}

.cs-thamibutton-btn-icon img {
    width: 32px;
    height: 32px;
    display: block;
}

.cs-thamibutton-btn-zalo .cs-thamibutton-btn-icon img {
    border-radius: 50%;
    background: #fff;
    padding: 2px;
}

.cs-thamibutton-main-btn:hover .cs-thamibutton-btn-text {
    color: #00aeef;
}


/* Responsive Mobile */
@media (max-width: 1023px) {
    #cs-thamibutton-wrapper {
        top: auto !important;
        bottom: 20px !important;
        transform: none !important;
        left: 0 !important; /* Always visible on the left edge */
    }

    .cs-thamibutton-container {
        flex-direction: column; /* Stack submenu above the buttons */
    }

    .cs-thamibutton-submenu {
        width: 170px;
        display: none; /* Hide submenu by default */
        border-radius: 0 10px 0 0; /* Round top-right corner */
        box-shadow: 2px -2px 10px rgba(0,0,0,0.2); /* Shadow pointing upwards */
    }

    #cs-thamibutton-wrapper.is-open .cs-thamibutton-submenu {
        display: block; /* Show submenu when clicked */
    }

    .cs-thamibutton-main-buttons {
        gap: 40px; /* Space between Skype and Zalo */
        margin-top: 2px;
    }

    .cs-thamibutton-main-btn {
        min-width: auto;
        padding: 6px 10px 6px 12px;
    }

    .cs-thamibutton-btn-text {
        font-size: 11px;
        width: 50px;
        margin-right: 2px;
    }

    /* Transform Zalo button to icon only */
    .cs-thamibutton-btn-zalo {
        background: transparent !important;
        box-shadow: none !important;
        padding: 0 0 0 15px !important;
    }

    .cs-thamibutton-btn-zalo .cs-thamibutton-btn-text {
        display: none; /* Hide text */
    }

    .cs-thamibutton-btn-zalo .cs-thamibutton-btn-icon img {
        width: 45px;
        height: 45px;
        border-radius: 50%;
        background: #fff;
        padding: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }
}