/**
 * YouTube動画セクション — フロント表示
 */

.youtube-section {
	/* 間隔は .top-section で統一 */
	background-color: var(--color-bg-warm, #F8F7F4);
	border-radius: 12px;
	padding-left: 1.5rem;
	padding-right: 1.5rem;
}

.youtube-section__title {
	/* スタイルは .top-section__title で統一 */
	margin-bottom: 1rem;
	padding-bottom: 0.5rem;
}

/* 説明文 */
.youtube-section__description {
	text-align: center;
	margin-bottom: 0.75rem;
	font-size: 0.8125rem;
	color: var(--color-text-secondary, #666);
	line-height: 1.8;
	max-width: 560px;
	margin-left: auto;
	margin-right: auto;
}

.youtube-section__description p {
	margin-bottom: 0.5em;
}

.youtube-section__description p:last-child {
	margin-bottom: 0;
}

.youtube-section__description strong {
	color: var(--color-text-primary, #1a1a1a);
	font-weight: 700;
}

.youtube-section__description a {
	text-decoration: underline;
}

/* 動画グリッド */
.youtube-section__list {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 0.875rem;
}

@media (max-width: 767px) {
	.youtube-section__list {
		grid-template-columns: 1fr;
		gap: 1rem;
	}
}

.youtube-section__item {
	width: 100%;
}

/* サムネイル */
.youtube-section__embed {
	position: relative;
	padding-bottom: 56.25%; /* 16:9 */
	height: 0;
	overflow: hidden;
	border-radius: 6px;
	background: #000;
	cursor: pointer;
}

.youtube-section__embed::after {
	content: "";
	position: absolute;
	inset: 0;
	background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.3));
	pointer-events: none;
	transition: opacity 0.3s;
}

.youtube-section__embed:hover::after {
	opacity: 0.6;
}

.youtube-section__embed iframe,
.youtube-section__thumb {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

/* 再生ボタン */
.youtube-section__play {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 1;
	border: none;
	background: none;
	cursor: pointer;
	padding: 0;
	opacity: 0.9;
	transition: opacity 0.2s, transform 0.2s;
}

.youtube-section__embed:hover .youtube-section__play {
	opacity: 1;
	transform: translate(-50%, -50%) scale(1.08);
}

/* キャプション */
.youtube-section__caption {
	margin-top: 0.5rem;
	font-size: 0.75rem;
	color: var(--color-text-secondary, #666);
	line-height: 1.5;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

/* チャンネルリンクボタン */
.youtube-section__link {
	text-align: center;
	margin-top: 1.25rem;
}

.youtube-section__link a {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.5rem 1.25rem;
	border: none;
	border-radius: 4px;
	background-color: #ff0000;
	color: #fff;
	text-decoration: none;
	font-size: 0.8125rem;
	font-weight: 600;
	letter-spacing: 0.02em;
	transition: background-color 0.2s, box-shadow 0.2s;
}

.youtube-section__link a:hover {
	background-color: #cc0000;
	color: #fff;
	box-shadow: 0 2px 8px rgba(204, 0, 0, 0.3);
}

.youtube-section__link a::before {
	content: "";
	display: inline-block;
	width: 1.125em;
	height: 1.125em;
	background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23fff'%3E%3Cpath d='M23.498 6.186a3.016 3.016 0 00-2.122-2.136C19.505 3.545 12 3.545 12 3.545s-7.505 0-9.377.505A3.017 3.017 0 00.502 6.186C0 8.07 0 12 0 12s0 3.93.502 5.814a3.016 3.016 0 002.122 2.136c1.871.505 9.376.505 9.376.505s7.505 0 9.377-.505a3.015 3.015 0 002.122-2.136C24 15.93 24 12 24 12s0-3.93-.502-5.814zM9.545 15.568V8.432L15.818 12l-6.273 3.568z'/%3E%3C/svg%3E") no-repeat center / contain;
}