/* ========================================
   固定左下角 Facebook / YouTube 側邊欄
   ======================================== */

.fixed-social-sidebar {
    position: fixed;
    left: 0;
    bottom: 30px;
    z-index: 99999;

    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* 社群按鈕 */
.fixed-social-sidebar a {
    width: 48px;
    height: 48px;

    display: flex;
    align-items: center;

    overflow: hidden;

    color: #ffffff;
    text-decoration: none;

    border-radius: 0 5px 5px 0;

    background: #333333;

    box-shadow: 0 3px 10px rgba(0,0,0,0.22);

    transition:
        width 0.25s ease,
        background 0.25s ease,
        box-shadow 0.25s ease;
}

/* 圖示 */
.fixed-social-sidebar a i {
    width: 48px;
    min-width: 48px;

    text-align: center;

    font-size: 22px;
}

/* 文字 */
.fixed-social-sidebar a span {
    white-space: nowrap;

    font-size: 14px;
    font-weight: 500;

    opacity: 0;

    transition: opacity 0.2s ease;
}

/* 滑鼠移過去 */
.fixed-social-sidebar a:hover {
    width: 135px;

    color: #ffffff;

    text-decoration: none;

    background: #444444;

    box-shadow: 0 5px 15px rgba(0,0,0,0.30);
}

.fixed-social-sidebar a:hover span {
    opacity: 1;
}

/* Facebook 滑入 */
.fixed-social-sidebar a:first-child:hover {
    background: #1877F2;
}

/* YouTube 滑入 */
.fixed-social-sidebar a:last-child:hover {
    background: #FF0000;
}


/* ========================================
   手機版
   ======================================== */

@media (max-width: 767px) {

    .fixed-social-sidebar {
        bottom: 20px;
    }

    .fixed-social-sidebar a {
        width: 42px;
        height: 42px;

        border-radius: 0 5px 5px 0;
    }

    .fixed-social-sidebar a i {
        width: 42px;
        min-width: 42px;

        font-size: 19px;
    }

    /* 手機不展開文字 */
    .fixed-social-sidebar a span {
        display: none;
    }

    .fixed-social-sidebar a:hover {
        width: 42px;
    }
}