.language-selector {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.language-label {
    margin-right: 10px;
    font-size: 16px;
    color: #333;
}

.language-dropdown {
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: transparent;
    appearance: none;
    cursor: pointer;
    transition: border-color 0.3s;
    color: white;
    width: 40px;
    text-align: center;
    height: 100%;
}

.language-dropdown:focus {
    outline: none;
}

.language-dropdown option {
    padding: 10px;
    color: #333;
}

/* Custom arrow for dropdown */
.language-dropdown::-ms-expand {
    display: none;
}

.language-selector::after {
    content: '▼';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #333;
    pointer-events: none;
}


/* Nút Back to Top */
.back-to-top {
    transition: opacity .3s;
    background: #404040;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    bottom: 0;
    color: var(--light);
    display: block;
    height: 9px;
    opacity: 0;
    padding: 10px 10px 35px;
    position: fixed;
    right: 10px;
    text-align: center;
    text-decoration: none;
    min-width: 50px;
    z-index: 1040;
    font-size: .8em;
}