/*
 * Luminesta Dental — ヘッダー専用スタイル
 *
 * ヘッダーとグローバルナビの骨格を担う独立した外部CSSです。
 * main.css とは別ファイルとして読み込むことで、確実にブラウザに
 * キャッシュされ、レイアウトが崩れないようにしています。
 * どの環境でもヘッダーが横並びで正しく表示されることを最優先しています。
 */

.site-header {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 100;
	height: 88px;
}

.site-header::before {
	content: "";
	position: absolute;
	inset: 0;
	z-index: -1;
	opacity: 0;
	background: rgba(255, 255, 255, 0.9);
	-webkit-backdrop-filter: blur(14px);
	backdrop-filter: blur(14px);
	box-shadow: 0 1px 0 rgba(228, 235, 240, 1);
	transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header.is-scrolled::before,
body:not(.is-front) .site-header::before {
	opacity: 1;
}

.site-header__inner {
	display: flex;
	flex-direction: row;
	align-items: center;
	justify-content: space-between;
	flex-wrap: nowrap;
	height: 100%;
	width: 100%;
	max-width: 100%;
	margin: 0 auto;
	padding: 0 clamp(20px, 3.4vw, 72px);
	box-sizing: border-box;
	gap: clamp(20px, 3vw, 48px);
}

.site-header__brand {
	display: flex;
	align-items: center;
	flex-shrink: 0;
}

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

.site-header__logo img,
.site-header .custom-logo {
	height: 46px;
	width: auto;
	display: block;
	transition: height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header__logo-light {
	display: none;
	position: absolute;
	left: 0;
	top: 0;
}

.site-header__title {
	font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif;
	font-size: 1.3rem;
	font-weight: 600;
	color: #16212b;
	text-decoration: none;
}

/* ナビゲーション本体 */
.site-nav {
	display: flex;
	flex-direction: row;
	align-items: center;
	gap: clamp(18px, 2.2vw, 34px);
}

.site-nav__menu {
	display: flex;
	flex-direction: row;
	align-items: center;
	gap: clamp(14px, 1.7vw, 26px);
	margin: 0;
	padding: 0;
	list-style: none;
	flex-wrap: nowrap;
}

.site-nav__menu li {
	margin: 0;
	padding: 0;
	list-style: none;
	position: relative;
	white-space: nowrap;
}

.site-nav__menu > li > a {
	display: inline-block;
	padding: 8px 0;
	text-decoration: none;
	color: #16212b;
	font-size: 0.9rem;
	font-weight: 500;
	letter-spacing: 0.06em;
	transition: color 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.site-nav__menu > li > a:hover {
	color: #0e7490;
}

/* 子メニュー(診療案内の下層) */
.site-nav__menu .sub-menu {
	display: block;
	position: absolute;
	top: 100%;
	left: 50%;
	transform: translateX(-50%) translateY(10px);
	min-width: 200px;
	margin: 0;
	padding: 12px 0;
	list-style: none;
	background: #fff;
	border-radius: 8px;
	box-shadow: 0 12px 40px rgba(7, 85, 105, 0.14);
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transition: opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1),
		transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), visibility 0.35s;
}

.site-nav__menu .menu-item-has-children:hover > .sub-menu,
.site-nav__menu .menu-item-has-children:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
	transform: translateX(-50%) translateY(0);
}

.site-nav__menu .sub-menu li {
	margin: 0;
}

.site-nav__menu .sub-menu a {
	display: block;
	padding: 11px 24px;
	font-size: 0.88rem;
	color: #16212b;
	white-space: nowrap;
	text-decoration: none;
	transition: background-color 0.3s, color 0.3s;
}

.site-nav__menu .sub-menu a:hover {
	background: #e6f4f7;
	color: #075569;
}

/* CTA(電話・Web予約) */
.site-nav__cta {
	display: flex;
	flex-direction: row;
	align-items: center;
	gap: 12px;
	flex-shrink: 0;
}

.site-nav__cta .btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	min-height: 44px;
	padding: 10px 22px;
	border-radius: 999px;
	font-size: 0.86rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	text-decoration: none;
	white-space: nowrap;
	border: 1px solid transparent;
	transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
		background-color 0.35s, color 0.35s, border-color 0.35s;
}

.site-nav__cta .btn:hover {
	transform: translateY(-2px);
}

.site-nav__cta .btn--tel {
	color: #16212b;
	border-color: rgba(22, 33, 43, 0.16);
	background: transparent;
}

.site-nav__cta .btn--tel:hover {
	border-color: #0e7490;
	color: #0e7490;
}

.site-nav__cta .btn--primary {
	background: #0e7490;
	color: #fff;
	box-shadow: 0 6px 20px rgba(14, 116, 144, 0.24);
}

.site-nav__cta .btn--primary:hover {
	background: #075569;
	color: #fff;
}

/* ハンバーガー(モバイル用・デスクトップでは非表示) */
.nav-toggle {
	display: none;
	background: none;
	border: none;
	cursor: pointer;
	padding: 8px;
	color: #16212b;
	position: relative;
	z-index: 102;
}

.nav-toggle__close {
	display: none;
}

.nav-toggle.is-active .nav-toggle__open {
	display: none;
}

.nav-toggle.is-active .nav-toggle__close {
	display: block;
}

/* フロントpage最上部(未スクロール)は白文字ロゴ */
body.is-front .site-header:not(.is-scrolled) .site-header__logo-dark {
	display: none;
}

body.is-front .site-header:not(.is-scrolled) .site-header__logo-light {
	display: block;
	position: static;
	filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.45));
}

body.is-front .site-header:not(.is-scrolled) .site-nav__menu > li > a,
body.is-front .site-header:not(.is-scrolled) .site-nav__cta .btn--tel {
	color: #fff;
	text-shadow: 0 1px 10px rgba(0, 0, 0, 0.4);
}

body.is-front .site-header:not(.is-scrolled) .site-nav__cta .btn--tel {
	border-color: rgba(255, 255, 255, 0.5);
}

body.is-front .site-header:not(.is-scrolled) .site-nav__menu .sub-menu a {
	color: #16212b;
	text-shadow: none;
}

body.is-front .site-header:not(.is-scrolled) .site-header__title {
	color: #fff;
}

/* =========================================================
   モバイル(900px以下)
   ========================================================= */
@media (max-width: 900px) {
	.site-header {
		height: 64px;
	}

	.site-header__logo img,
	.site-header .custom-logo {
		height: 38px;
	}

	.nav-toggle {
		display: block;
	}

	.site-nav {
		position: fixed;
		inset: 0;
		flex-direction: column;
		justify-content: center;
		gap: 10px;
		background: rgba(255, 255, 255, 0.98);
		-webkit-backdrop-filter: blur(10px);
		backdrop-filter: blur(10px);
		transform: translateX(100%);
		transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
		z-index: 101;
		padding: 80px 24px 40px;
		overflow-y: auto;
	}

	.site-nav.is-open {
		transform: translateX(0);
	}

	.site-nav__menu {
		flex-direction: column;
		gap: 4px;
		text-align: center;
		width: 100%;
	}

	.site-nav__menu > li > a {
		color: #16212b;
		font-size: 1.05rem;
		padding: 13px 0;
	}

	.site-nav__menu .sub-menu {
		display: block;
		position: static;
		transform: none;
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
		box-shadow: none;
		padding: 0 0 8px;
		min-width: 0;
		background: none;
	}

	.site-nav__menu .sub-menu a {
		font-size: 0.92rem;
		padding: 8px 0;
		color: #5c6b78;
		text-align: center;
	}

	.site-nav__cta {
		flex-direction: column;
		width: 100%;
		max-width: 280px;
		margin: 20px auto 0;
	}

	.site-nav__cta .btn {
		width: 100%;
		justify-content: center;
	}

	/* モバイルメニュー展開時は常に濃色文字 */
	body.is-front .site-header .site-nav__menu > li > a {
		color: #16212b;
		text-shadow: none;
	}

	body.is-front .site-header .site-nav__cta .btn--tel {
		color: #16212b;
		text-shadow: none;
		border-color: rgba(22, 33, 43, 0.16);
	}
}

@media (prefers-reduced-motion: reduce) {
	.site-nav,
	.site-nav__menu .sub-menu,
	.site-nav__cta .btn,
	.site-header::before {
		transition: none;
	}
}

/* 旧テーマ由来フッター(.luminesta-footer)の保険的無効化 */
.luminesta-footer { display: none !important; }

/* ヘッダー電話番号も日本語角ゴシックの等幅数字で */
.site-nav__cta .btn--tel span {
	font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
	font-feature-settings: "tnum" 1, "palt" 1;
	letter-spacing: 0.02em;
}