/* ── SNSセクション ── */
.sns__grid {
    display: grid;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

/* Facebook埋め込み */
.sns__facebook {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
    max-width: 500px;
    margin: 0 auto;
}

.sns__facebook iframe {
    display: block;
    width: 100%;
    max-width: 500px;
    border: none;
}

/* YouTube再生リスト埋め込み */
.sns__youtube-playlist {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    background: var(--color-gray-900);
    max-width: 500px;
    margin: 0 auto;
}

.sns__youtube-playlist iframe {
    display: block;
    width: 100%;
    max-width: 500px;
    border: none;
}

/* YouTubeチャンネルリンク */
.sns__youtube-channel {
    max-width: 500px;
    margin: 0 auto;
}

.sns__youtube-link {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-gray-900);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.sns__youtube-link:hover {
    background: #1a1a1a;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.sns__youtube-link-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    background: #ff0000;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sns__youtube-link-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--color-white);
}

.sns__youtube-link-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.sns__youtube-link-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.sns__youtube-link-action {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

/* YouTube Lite Embed（動画埋め込み用） */
.youtube-lite {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--color-gray-900);
    cursor: pointer;
}

.youtube-lite img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-base);
}

.youtube-lite:hover img {
    opacity: 0.85;
}

.youtube-lite__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 68px;
    height: 48px;
    background: rgba(255, 0, 0, 0.8);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.youtube-lite:hover .youtube-lite__play {
    background: rgba(255, 0, 0, 1);
    transform: translate(-50%, -50%) scale(1.1);
}

.youtube-lite__play::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent white;
    margin-left: 3px;
}

.youtube-lite iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* SNSリンクボタン一覧 */
.sns__links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}

.sns__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    transition: all var(--transition-base);
}

.sns__link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sns__link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.sns__link--facebook { background: #1877f2; }
.sns__link--facebook:hover { background: #0d65d9; }
.sns__link--instagram { background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.sns__link--twitter { background: #000000; }
.sns__link--twitter:hover { background: #333333; }
.sns__link--youtube { background: #ff0000; }
.sns__link--youtube:hover { background: #cc0000; }

@media (min-width: 768px) {
    .sns__grid {
        grid-template-columns: 1fr 1fr;
    }
}