/**
 * Header セクション（site-header）
 * BEM: .site-header, .site-header__element, .site-header__element--modifier
 */

/*
 * スマホ幅ではヘッダーを画面上部に固定表示する。
 * その分の余白は .site-main 側の padding-top（main.css）で確保している。
 */
.site-header {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 100;
	background-color: var(--color-bg);
	border-bottom: 1px solid var(--color-bg-soft);
}

.site-header__inner {
	max-width: var(--container-max-width);
	margin: 0 auto;
	padding: 12px var(--container-padding);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}

/* ロゴ */
.site-header__branding {
	flex-shrink: 0;
}

.site-header__logo {
	display: inline-flex;
	align-items: center;
}

.site-header__logo-img {
	display: block;
	width: auto;
	height: 40px;
}

/* ハンバーガーボタン（モバイル） */
.site-header__toggle {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	margin-left: auto;
	padding: 0;
	background: none;
	border: 0;
	cursor: pointer;
}

.site-header__toggle-bar {
	display: block;
	width: 24px;
	height: 2px;
	background-color: var(--color-navy);
	transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-header__toggle.is-active .site-header__toggle-bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.site-header__toggle.is-active .site-header__toggle-bar:nth-child(2) {
	opacity: 0;
}

.site-header__toggle.is-active .site-header__toggle-bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

/* ナビ + 電話 + CTA をまとめたパネル（モバイルでは折りたたみ） */
.site-header__panel {
	position: absolute;
	top: 100%;
	left: 0;
	width: 100%;
	background-color: var(--color-bg);
	border-top: 1px solid var(--color-bg-soft);
	box-shadow: 0 8px 16px rgb(0 0 0 / 8%);
	display: none;
	flex-direction: column;
	padding: 16px var(--container-padding) 24px;
}

.site-header__panel.is-open {
	display: flex;
}

.site-header__menu {
	list-style: none;
	margin: 0 0 16px;
	padding: 0;
	display: flex;
	flex-direction: column;
}

.site-header__menu-item {
	border-bottom: 1px solid var(--color-bg-soft);
}

.site-header__menu-link {
	display: block;
	padding: 12px 4px;
	color: var(--color-text);
	text-decoration: none;
	font-weight: 700;
	transition: color 0.2s ease;
}

.site-header__menu-link:hover {
	color: var(--color-navy);
}

.site-header__contact {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.site-header__tel {
	display: flex;
	align-items: center;
	flex-shrink: 0;
	gap: 8px;
	color: var(--color-navy);
	text-decoration: none;
	white-space: nowrap;
	transition: opacity 0.2s ease;
}

.site-header__tel:hover {
	opacity: 0.75;
}

.site-header__tel-icon {
	flex-shrink: 0;
	width: 20px;
	height: 20px;
}

.site-header__tel-text {
	display: flex;
	flex-direction: column;
	line-height: 1.3;
}

.site-header__tel-number {
	font-size: 1.15rem;
	font-weight: 700;
}

.site-header__tel-hours {
	font-size: 0.7rem;
	color: var(--color-text);
}

.site-header__cta {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	gap: 8px;
	padding: 12px 16px;
	background-color: var(--color-gold);
	/* 白文字だとコントラスト比が不足するため、ネイビー文字にして視認性を確保する */
	color: var(--color-navy);
	font-weight: 700;
	text-decoration: none;
	text-align: center;
	white-space: nowrap;
	border-radius: 4px;
	transition: filter 0.2s ease, transform 0.2s ease;
}

.site-header__cta:hover {
	filter: brightness(0.92);
	transform: translateY(-1px);
}

.site-header__cta-icon {
	flex-shrink: 0;
	width: 18px;
	height: 18px;
}

/* モバイルは1行表示（改行を無効化） */
.site-header__cta-break {
	display: none;
}

/* デスクトップ（768px超）: 常時横並び表示、ハンバーガー非表示、固定ヘッダーは解除 */
@media (min-width: 769px) {
	.site-header {
		position: relative;
	}

	.site-header__toggle {
		display: none;
	}

	.site-header__panel {
		position: static;
		display: flex;
		flex-direction: row;
		align-items: center;
		width: auto;
		margin-left: auto;
		padding: 0;
		border-top: 0;
		box-shadow: none;
	}

	.site-header__menu {
		flex-direction: row;
		align-items: center;
		gap: 24px;
		margin: 0 32px 0 0;
	}

	.site-header__menu-item {
		border-bottom: 0;
	}

	.site-header__menu-link {
		padding: 4px 0;
		white-space: nowrap;
	}

	.site-header__contact {
		flex-direction: row;
		align-items: center;
		gap: 24px;
	}

	.site-header__cta {
		gap: 10px;
		padding: 10px 18px;
		font-size: 0.8rem;
	}

	.site-header__cta-label {
		text-align: left;
		line-height: 1.4;
	}

	/* PCはアイコン左＋テキスト2行表示にする */
	.site-header__cta-break {
		display: inline;
	}
}