/**
 * せいじのとなり - 関連動画表示スタイル
 * [related_video] ショートコード用
 * 
 * デザインコンセプト:
 * - やさしく、誠実な雰囲気
 * - 角丸、余白、淡いシャドウで親しみやすさを演出
 * - ブルーアクセント (#4A90E2) で信頼感
 */


/* ==========================================
   メインコンテナ
   ========================================== */

.seiji-related-video {
    background: #F9FAFB;
    border-radius: 16px;
    padding: 32px;
    margin: 40px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.3s ease;
}

.seiji-related-video:hover {
    box-shadow: 0 4px 16px rgba(74, 144, 226, 0.12);
}

.seiji-related-video__container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}


/* ==========================================
   動画プレイヤー
   ========================================== */

.seiji-related-video__player {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 アスペクト比 */
    border-radius: 16px;
    overflow: hidden;
    background: transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.seiji-related-video__player iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}


/* ==========================================
   タイトル
   ========================================== */

.seiji-related-video__title {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.5;
    color: #333333;
    margin: 0;
    word-break: break-word;
}


/* モバイル時のタイトルサイズ調整 */

@media (max-width: 767px) {
    .seiji-related-video__title {
        font-size: 1.3rem;
    }
}


/* ==========================================
   メタ情報（日付・チャンネル）
   ========================================== */

.seiji-related-video__meta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    background: transparent;
    border-radius: 12px;
    border-left: 4px solid #4A90E2;
}

.seiji-related-video__meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.seiji-related-video__meta-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #666666;
    text-transform: none;
}

.seiji-related-video__meta-label i {
    color: #4A90E2;
    font-size: 0.95rem;
}

.seiji-related-video__meta-value {
    font-size: 1rem;
    font-weight: 600;
    color: #333333;
    padding-left: 22px;
    /* アイコン分のインデント */
}


/* ==========================================
   YouTube リンクボタン
   ========================================== */

.seiji-related-video__link {
    display: flex;
    justify-content: center;
}

.seiji-related-video__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    background: #4A90E2;
    color: #FFFFFF !important;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.25s ease;
    box-shadow: 0 2px 6px rgba(74, 144, 226, 0.25);
    min-width: 200px;
}

.seiji-related-video__button:hover {
    background: #3A7BC8;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.35);
    transform: translateY(-2px);
}

.seiji-related-video__button:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(74, 144, 226, 0.25);
}

.seiji-related-video__button i {
    font-size: 1.1rem;
}

.seiji-related-video__button .fa-external-link-alt {
    font-size: 0.85rem;
    opacity: 0.8;
}


/* ==========================================
   エラー表示（管理者のみ）
   ========================================== */

.seiji-video-error {
    background: #FFF3CD;
    border-left: 4px solid #FFD45F;
    border-radius: 8px;
    padding: 16px 20px;
    margin: 20px 0;
    color: #856404;
    font-size: 0.95rem;
}

.seiji-video-error p {
    margin: 8px 0;
}

.seiji-video-error strong {
    color: #664D03;
}


/* ==========================================
   レスポンシブ調整
   ========================================== */


/* タブレット */

@media (max-width: 991px) {
    .seiji-related-video {
        padding: 24px;
    }
    .seiji-related-video__container {
        gap: 20px;
    }
}


/* モバイル */

@media (max-width: 767px) {
    .seiji-related-video {
        padding: 20px 16px;
        margin: 32px 0;
        border-radius: 12px;
    }
    .seiji-related-video__container {
        gap: 16px;
    }
    .seiji-related-video__meta {
        padding: 12px;
        gap: 10px;
    }
    .seiji-related-video__button {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
    }
}

@media screen and (min-width: 768px) {
    .seiji-related-video__meta-item {
        flex-direction: row;
    }
    .seiji-related-video__meta-label {
        flex: 1;
        max-width: 120px;
    }
    .seiji-related-video__meta-value {
        padding-left: 0;
    }
}


/* ==========================================
   アクセシビリティ & プリント
   ========================================== */


/* フォーカス可視化 */

.seiji-related-video__button:focus {
    outline: 3px solid #FFD45F;
    outline-offset: 2px;
}


/* ダークモード対応（将来的に） */


/* @media (prefers-color-scheme: dark) {
    .seiji-related-video {
        background: #1A1A1A;
    }
    .seiji-related-video__title {
        color: #F9FAFB;
    }
    .seiji-related-video__meta {
        background: #2A2A2A;
    }
    .seiji-related-video__meta-label {
        color: #A5A5A5;
    }
    .seiji-related-video__meta-value {
        color: #E0E0E0;
    }
} */


/* プリント時 */

@media print {
    .seiji-related-video {
        box-shadow: none;
        border: 1px solid #CCCCCC;
    }
    .seiji-related-video__player {
        display: none;
        /* 動画は印刷しない */
    }
    .seiji-related-video__button {
        display: none;
        /* ボタンも印刷しない */
    }
    /* URL を表示 */
    .seiji-related-video__button::after {
        content: " (" attr(href) ")";
        font-size: 0.85rem;
        color: #666666;
    }
}


/* ==========================================
   アニメーション（軽量）
   ========================================== */


/* ページロード時のフェードイン */

@media (prefers-reduced-motion: no-preference) {
    .seiji-related-video {
        animation: fadeInUp 0.5s ease-out;
    }
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}


/* アニメーション削減設定の尊重 */

@media (prefers-reduced-motion: reduce) {
    .seiji-related-video,
    .seiji-related-video__button {
        animation: none;
        transition: none;
    }
}