.video-item {
    display: grid;
    grid-template-columns: 1fr 7fr 1fr 1fr;
    /*サムネイル:タイトル:再生時間:解像度=1:7:1:1*/
    gap: 10px;
    align-items: center;
    border: 1px solid #ddd;
    justify-content: space-between;
}

.video-title {
    grid-column: 1;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 10vh;
    background-color: #ffffff;
    display: flex;
    justify-content: space-around;
    /* アイコンを均等に配置 */
    align-items: center;

    border: 1px solid #aaa;
    z-index: 1000;
    /* 他の要素より上に表示 */
}

.nav-item {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    color: #606060;
}

/*クリックしたりタップした時に色を変える*/
.nav-item:active {
    background-color: #f0f0f0;
}

.icon {
    font-size: 20px;
}

.label {
    font-size: 10px;
    margin-top: 2px;
}

.main-content {
    height: 80vh;
    padding-bottom: 10vh;
    overflow-y: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.top {
    position: relative;
    height: 10vh;
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: flex-end;
    padding: 0 10px;

}

button#settings {
    background-color: #eee;
    padding: 10px;
    margin-left: auto;
}


.options {
    position: absolute;
    display: flex;
    top: 100%;
    z-index: 1001;
    flex-direction: column;
}

/*動画プレイヤーが隠れていない場合*/
.video-player:not(.hidden) {
    display: block;
    flex-shrink: 0;
    padding-bottom: 20px;

}

#videoDescription {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.sidebar {
    max-height: none;
    height: auto;
}

/* 小さい画面（800px以下）：動画＋リストを一体でスクロール */
@media (max-width: 800px) {
    .main-content {
        height: auto;
        overflow-y: visible;
        padding-bottom: 10vh;
        /* ボトムナビ分の余白 */
    }

    .sidebar {
        overflow-y: visible;
        max-height: none;
        height: auto;
    }
}

.main-content::-webkit-scrollbar {
    display: none;
}