/**
 * 再利用可能なUIパーツ（ボタン・ヘッダー・メガメニュー・フォーム部品など）
 */

/* ===== ボタン ===== */
.btn {
	display: inline-block;
	font-family: var(--font-main);
	font-size: 12px;
	letter-spacing: 0.12em;
	padding: 20px 44px;
	border: 1px solid var(--color-border-strong);
	background: none;
	color: var(--color-ink);
	transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
	text-align: center;
}
.btn:hover {
	background: var(--color-ink);
	color: var(--color-white);
	border-color: var(--color-ink);
}
.btn--solid {
	background: var(--color-ink);
	color: var(--color-white);
	border-color: var(--color-ink);
}
.btn--solid:hover {
	background: var(--color-white);
	color: var(--color-ink);
}
.btn--block {
	display: block;
	width: 100%;
}

/* ===== ヘッダー ===== */
.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 100;
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 20px 40px;
	background: transparent;
	color: var(--color-white);
	transition: background var(--transition-base), color var(--transition-base);
}
.site-header.is-solid {
	background: var(--color-white);
	color: var(--color-ink);
}
.site-header__logo {
	font-weight: 700;
	font-size: 20px;
	letter-spacing: 0.04em;
	color: inherit;
}
.site-header__nav {
	display: flex;
	gap: 20px;
	flex-wrap: nowrap;
}
.site-header__nav a {
	font-size: 11px;
	letter-spacing: 0.08em;
	font-weight: 500;
	color: inherit;
	white-space: nowrap;
}
.site-header__right {
	display: flex;
	align-items: center;
	gap: 20px;
}
.site-header__lang {
	background: none;
	border: none;
	font-size: 11px;
	letter-spacing: 0.1em;
	color: inherit;
	padding: 0;
}
.site-header__menu-btn {
	background: none;
	border: none;
	font-size: 12px;
	letter-spacing: 0.16em;
	color: inherit;
	padding: 0;
}

@media (max-width: 1099px) {
	.site-header { padding: 16px 20px; }
	.site-header__nav { display: none; }
	.site-header__logo { font-size: 18px; }
}

/* ===== メガメニュー ===== */
.mega-menu {
	position: fixed;
	inset: 0;
	z-index: 200;
	background: var(--color-white);
	display: flex;
	visibility: hidden;
	opacity: 0;
	transition: opacity var(--transition-base), visibility var(--transition-base);
}
.mega-menu.is-open {
	visibility: visible;
	opacity: 1;
}
.mega-menu__left {
	padding: 140px 80px 60px;
	flex: 0 0 620px;
	overflow-y: auto;
}
.mega-menu__kicker {
	font-size: 11px;
	letter-spacing: 0.16em;
	color: var(--color-muted);
	margin-bottom: 24px;
}
.mega-menu__list {
	border-top: 1px solid var(--color-border);
}
.mega-menu__item {
	display: flex;
	align-items: baseline;
	gap: 16px;
	padding: 14px 0;
	border-bottom: 1px solid var(--color-border);
}
.mega-menu__item-num {
	font-size: 11px;
	color: var(--color-muted);
}
.mega-menu__item-label {
	font-weight: 600;
	font-size: clamp(22px, 2.2vw, 30px);
	color: var(--color-ink);
	letter-spacing: 0.01em;
}
.mega-menu__item-status {
	font-size: 12px;
	color: var(--color-muted);
}
.mega-menu__cta {
	margin-top: 32px;
}
.mega-menu__photo {
	flex: 1;
	position: relative;
	background: var(--color-fog) center/cover no-repeat;
}
@media (max-width: 1099px) {
	.mega-menu__left { padding: 100px 24px 40px; flex: none; }
	.mega-menu__photo { display: none; }
}

/* ===== 言語選択プロンプト ===== */
.lang-prompt {
	position: fixed;
	inset: 0;
	z-index: 400;
	background: rgba(8, 8, 8, 0.92);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 24px;
}
.lang-prompt__card {
	background: var(--color-white);
	border: 1px solid var(--color-border-strong);
	padding: 40px;
	max-width: 420px;
	text-align: center;
}
.lang-prompt__title { font-size: 14px; margin-bottom: 8px; }
.lang-prompt__sub { font-size: 13px; color: var(--color-muted); margin-bottom: 28px; }
.lang-prompt__actions { display: flex; gap: 12px; justify-content: center; }
.lang-prompt__actions a {
	display: inline-block;
	font-family: var(--font-main);
	font-size: 12px;
	letter-spacing: 0.08em;
	padding: 14px 24px;
	cursor: pointer;
}
.lang-prompt__yes { background: var(--color-fog); border: none; color: var(--color-ink); }
.lang-prompt__no { background: none; border: 1px solid var(--color-border-strong); color: var(--color-ink); }

/* ===== モバイル固定CTA ===== */
.mobile-cta {
	position: fixed;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 150;
	display: none;
}
.mobile-cta a {
	display: block;
	text-align: center;
	background: var(--color-ink);
	color: var(--color-white);
	font-size: 13px;
	letter-spacing: 0.1em;
	padding: 18px;
}
@media (max-width: 1099px) {
	.mobile-cta.is-active { display: block; }
}

/* ===== フラッシュメッセージ ===== */
.flash {
	padding: 14px 20px;
	font-size: 13px;
	letter-spacing: 0.02em;
	border-left: 3px solid var(--color-ink);
	background: var(--color-fog);
	margin-bottom: 20px;
}
.flash--error {
	border-color: var(--admin-danger);
	background: #fbe9e7;
	color: #7a2a20;
}

/* ===== フォーム部品 ===== */
.field-row {
	margin-bottom: 28px;
}
.field-label {
	display: block;
	font-size: 12px;
	letter-spacing: 0.04em;
	color: var(--color-muted);
	margin-bottom: 8px;
}
.field-label .required {
	color: var(--color-muted);
	margin-left: 4px;
}
.field-input {
	width: 100%;
	background: none;
	border: none;
	border-bottom: 1px solid var(--color-border-strong);
	padding: 10px 0;
	font-size: 16px;
	font-family: var(--font-main);
	outline: none;
}
.field-input:focus {
	border-color: var(--color-ink);
}
textarea.field-input {
	resize: vertical;
	min-height: 120px;
}
.field-radio-group {
	display: flex;
	gap: 24px;
	padding-top: 12px;
}
.field-radio-group label {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 14px;
	color: #3a3a3a;
	cursor: pointer;
}
.field-checkbox {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	font-size: 13px;
	color: #3a3a3a;
	line-height: 1.7;
}
.field-checkbox input { margin-top: 4px; }
.field-error {
	font-size: 12px;
	color: #b23b2e;
	margin-bottom: 16px;
	min-height: 16px;
}

.dropzone {
	border: 1px dashed var(--color-border-strong);
	padding: clamp(28px, 5vw, 48px) 24px;
	text-align: center;
	margin-top: 12px;
	position: relative;
	transition: background var(--transition-base);
}
.dropzone.is-dragover {
	background: var(--color-fog);
}
.dropzone__filename {
	font-size: 13px;
	color: #3a3a3a;
	margin-bottom: 8px;
}
.dropzone__hint {
	font-size: 11px;
	color: var(--color-muted);
}
.dropzone input[type="file"] {
	position: absolute;
	inset: 0;
	opacity: 0;
	cursor: pointer;
}

/* ===== ライトボックス ===== */
.lightbox {
	position: fixed;
	inset: 0;
	background: rgba(8, 8, 8, 0.94);
	z-index: 300;
	display: none;
	align-items: center;
	justify-content: center;
	padding: clamp(24px, 6vw, 64px);
}
.lightbox.is-open { display: flex; }
.lightbox__inner {
	display: flex;
	gap: 32px;
	max-width: 1100px;
	width: 100%;
}
.lightbox__image {
	flex: 1;
	aspect-ratio: 3 / 4;
	background: var(--color-fog) center/cover no-repeat;
}
.lightbox__body { flex: 1; color: var(--color-white); }
.lightbox__category { font-size: 11px; letter-spacing: 0.1em; color: var(--color-muted); margin-bottom: 12px; }
.lightbox__title { font-weight: 600; font-size: 28px; margin-bottom: 16px; }
.lightbox__note { font-size: 13px; line-height: 1.9; color: #d8d8d8; max-width: 400px; }
.lightbox__close {
	margin-top: 32px;
	background: none;
	border: 1px solid var(--color-border-strong);
	color: var(--color-white);
	font-size: 11px;
	letter-spacing: 0.1em;
	padding: 14px 24px;
}
@media (max-width: 1099px) {
	.lightbox__inner { flex-direction: column; }
}