/* =========================================================
   04-components.css
   汎用コンポーネント (header / footer / button / card など)
   ========================================================= */

/* ---------- header ---------- */

.nt-header {
	background: var(--nt-color-bg);
	border-bottom: 1px solid var(--nt-color-border);
	transition: box-shadow var(--nt-transition), background-color var(--nt-transition), backdrop-filter var(--nt-transition);
}

/* Sticky header (v0.6 〜)
   Customizer の nt_sticky_header_enabled が ON のときだけ modifier が付く。
   既定は OFF なので、既存サイトに足したときに「いきなり sticky 化」しない。 */
.nt-header--sticky {
	position: sticky;
	top: 0;
	z-index: var(--nt-z-header);
	background-color: color-mix(in srgb, var(--nt-color-bg) 92%, transparent);
	-webkit-backdrop-filter: blur(8px);
	backdrop-filter: blur(8px);
}

body.nt-is-scrolled .nt-header--sticky {
	background-color: var(--nt-color-bg);
	box-shadow: var(--nt-shadow-sm);
}

@media (prefers-reduced-motion: reduce) {
	.nt-header,
	.nt-header--sticky {
		transition: none;
	}
}

.nt-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--nt-gap);
	min-height: var(--nt-header-h);
	padding-block: 12px;
}

.nt-header__brand {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-weight: 700;
	font-size: var(--nt-fs-md);
	color: var(--nt-color-text);
	text-decoration: none;
}

.nt-header__logo img {
	max-height: 40px;
	width: auto;
}

.nt-header__nav {
	display: flex;
	align-items: center;
	gap: 8px;
}

.nt-header__menu {
	display: flex;
	gap: 4px;
	list-style: none;
	margin: 0;
	padding: 0;
}

.nt-header__menu a {
	display: inline-block;
	padding: 8px 14px;
	border-radius: var(--nt-radius-sm);
	color: var(--nt-color-text);
	text-decoration: none;
	transition: background var(--nt-transition), color var(--nt-transition);
}

.nt-header__menu a:hover,
.nt-header__menu .current-menu-item > a {
	background: var(--nt-color-surface);
	color: var(--nt-color-primary);
}

.nt-header__cta {
	display: inline-flex;
	gap: 8px;
}

/* mobile menu button */
.nt-menu-toggle {
	display: none;
	width: 44px;
	height: 44px;
	border-radius: var(--nt-radius-sm);
	border: 1px solid var(--nt-color-border);
	align-items: center;
	justify-content: center;
}

.nt-menu-toggle__bar {
	display: block;
	width: 20px;
	height: 2px;
	background: currentColor;
	position: relative;
}

.nt-menu-toggle__bar::before,
.nt-menu-toggle__bar::after {
	content: "";
	position: absolute;
	left: 0;
	width: 20px;
	height: 2px;
	background: currentColor;
	transition: transform var(--nt-transition);
}

.nt-menu-toggle__bar::before { top: -6px; }
.nt-menu-toggle__bar::after  { top:  6px; }

body.nt-menu-open .nt-menu-toggle__bar { background: transparent; }
body.nt-menu-open .nt-menu-toggle__bar::before { transform: translateY(6px) rotate(45deg); }
body.nt-menu-open .nt-menu-toggle__bar::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 900px) {
	.nt-menu-toggle {
		display: inline-flex;
	}
	.nt-header__nav {
		position: fixed;
		inset: var(--nt-header-h) 0 0 0;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: 24px;
		background: var(--nt-color-bg);
		border-top: 1px solid var(--nt-color-border);
		transform: translateY(-110%);
		transition: transform var(--nt-transition);
		overflow-y: auto;
	}
	.nt-header__menu {
		flex-direction: column;
	}
	.nt-header__menu a {
		display: block;
		padding: 14px;
		border-bottom: 1px solid var(--nt-color-border);
		border-radius: 0;
	}
	body.nt-menu-open .nt-header__nav {
		transform: translateY(0);
	}
}

/* ---------- buttons ---------- */

.nt-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5em;
	padding: 0.75em 1.4em;
	border-radius: var(--nt-radius-pill);
	font-weight: 600;
	text-decoration: none;
	transition: transform var(--nt-transition), background var(--nt-transition), color var(--nt-transition), border-color var(--nt-transition), box-shadow var(--nt-transition);
	border: 1px solid transparent;
	line-height: 1.2;
	box-shadow: var(--nt-button-shadow);
}

.nt-btn:hover {
	transform: translateY(-1px);
	text-decoration: none;
}

.nt-btn--primary {
	background: var(--nt-color-primary);
	color: var(--nt-color-primary-contrast);
}

.nt-btn--primary:hover {
	color: var(--nt-color-primary-contrast);
	background: color-mix(in srgb, var(--nt-color-primary) 88%, black);
}

.nt-btn--secondary {
	background: var(--nt-color-secondary);
	color: var(--nt-color-secondary-contrast);
}

.nt-btn--secondary:hover {
	color: var(--nt-color-secondary-contrast);
}

.nt-btn--accent {
	background: var(--nt-color-accent);
	color: var(--nt-color-accent-contrast);
}

.nt-btn--ghost {
	background: transparent;
	color: var(--nt-color-text);
	border-color: var(--nt-color-border);
}

.nt-btn--ghost:hover {
	background: var(--nt-color-surface);
}

/* ---------- card ---------- */

.nt-card {
	display: flex;
	flex-direction: column;
	background: var(--nt-card-bg);
	border: 1px solid var(--nt-card-border);
	border-radius: var(--nt-radius-md);
	overflow: hidden;
	transition: box-shadow var(--nt-transition), transform var(--nt-transition);
	height: 100%;
}

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

.nt-card__media {
	position: relative;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--nt-color-surface);
}

.nt-card__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.nt-card__body {
	padding: 20px;
	display: flex;
	flex-direction: column;
	gap: 8px;
	flex-grow: 1;
}

.nt-card__category {
	display: inline-block;
	font-size: var(--nt-fs-xs);
	color: var(--nt-color-muted);
	text-transform: uppercase;
	letter-spacing: 0.06em;
	margin: 0;
	text-decoration: none;
}

.nt-card__title {
	font-size: var(--nt-fs-md);
	margin: 0;
	line-height: 1.5;
}

.nt-card__title a {
	color: var(--nt-color-text);
	text-decoration: none;
}

.nt-card__title a:hover {
	color: var(--nt-color-primary);
}

.nt-card__excerpt {
	color: var(--nt-color-muted);
	margin: 0;
	font-size: var(--nt-fs-sm);
}

.nt-card__meta {
	margin-top: auto;
	font-size: var(--nt-fs-xs);
	color: var(--nt-color-muted);
}

/* ---------- hero / actions / faq ---------- */

.nt-hero__eyebrow {
	display: inline-flex;
	align-items: center;
	margin: 0 0 var(--nt-stack);
	padding: 0.35em 0.9em;
	border: 1px solid var(--nt-color-border);
	border-radius: var(--nt-radius-pill);
	background: color-mix(in srgb, var(--nt-color-primary) 8%, var(--nt-color-bg));
	color: var(--nt-color-primary);
	font-size: var(--nt-fs-sm);
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.nt-hero__actions,
.nt-actions {
	display: inline-flex;
	gap: 12px;
	flex-wrap: wrap;
	justify-content: center;
}

.nt-section__head {
	display: flex;
	flex-direction: column;
	gap: 8px;
	align-items: center;
}

/* ---------- front hero layout / media / overlay (v0.6) ----------
   Customizer (Neutrope Theme Settings) の nt_hero_layout / nt_hero_media_type
   などの設定で見た目が切り替わる。CSS custom property
   (--nt-hero-bg-image / --nt-hero-bg-size / --nt-hero-bg-position /
    --nt-hero-overlay-opacity) は template-parts/front-hero.php が
   inline style で動的に注入する (full-bleed の背景画像 / overlay 不透明度のみ)。 */

.nt-front-hero {
	position: relative;
	overflow: hidden;
	isolation: isolate;
}

.nt-front-hero__container {
	position: relative;
	z-index: 1;
}

.nt-front-hero__overlay {
	position: absolute;
	inset: 0;
	background: var(--nt-color-text);
	opacity: var(--nt-hero-overlay-opacity, 0.4);
	pointer-events: none;
	z-index: 0;
}

/* full-bleed: 画面いっぱいの first view (背景画像 / 背景動画 + テキスト) */
.nt-front-hero--layout-full-bleed {
	min-height: 90svh;
	display: flex;
	align-items: center;
	color: var(--nt-color-primary-contrast);
	background-image: var(--nt-hero-bg-image, none);
	background-size: var(--nt-hero-bg-size, cover);
	background-position: var(--nt-hero-bg-position, center center);
	background-repeat: no-repeat;
}

.nt-front-hero--layout-full-bleed .nt-hero__title,
.nt-front-hero--layout-full-bleed .nt-hero__lead,
.nt-front-hero--layout-full-bleed .nt-hero__eyebrow {
	color: inherit;
}

.nt-front-hero--layout-full-bleed .nt-hero__lead {
	color: color-mix(in srgb, currentColor 90%, transparent);
}

.nt-front-hero__bg-video {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	z-index: -1;
	pointer-events: none;
}

/* split: 左テキスト / 右ビジュアル (BtoB / SaaS 向け) */
.nt-front-hero--layout-split .nt-front-hero__container {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: var(--nt-gap);
	align-items: center;
}

@media (min-width: 900px) {
	.nt-front-hero--layout-split .nt-front-hero__container {
		grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
	}
}

.nt-front-hero--layout-split .nt-front-hero__content {
	text-align: left;
}

.nt-front-hero--layout-split .nt-hero__actions,
.nt-front-hero--layout-visual-card .nt-hero__actions {
	justify-content: flex-start;
}

.nt-front-hero__media {
	margin: 0;
}

.nt-front-hero__media--split {
	border-radius: var(--nt-radius-lg);
	overflow: hidden;
	box-shadow: var(--nt-shadow-md);
	background: var(--nt-color-surface);
}

.nt-front-hero__media-image,
.nt-front-hero__media-video {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 4 / 3;
	object-fit: cover;
}

/* visual-card: 中央テキスト + 下に上品なビジュアルカード */
.nt-front-hero--layout-visual-card .nt-front-hero__container {
	display: grid;
	gap: var(--nt-gap);
	justify-items: center;
}

.nt-front-hero__media--visual-card {
	max-width: 720px;
	width: 100%;
	border-radius: var(--nt-radius-lg);
	overflow: hidden;
	box-shadow: var(--nt-shadow-lg);
	background: var(--nt-color-surface);
}

.nt-front-hero__media--visual-card .nt-front-hero__media-image,
.nt-front-hero__media--visual-card .nt-front-hero__media-video {
	aspect-ratio: 16 / 9;
}

/* minimal: 既存の simple hero と同等。modifier 経由で他レイアウトとの違いを明示する。 */
.nt-front-hero--layout-minimal .nt-front-hero__content,
.nt-front-hero--layout-standard .nt-front-hero__content {
	margin-inline: auto;
}

@media (prefers-reduced-motion: reduce) {
	.nt-front-hero__bg-video,
	.nt-front-hero__media-video {
		display: none;
	}
}

.nt-faq {
	display: grid;
	gap: var(--nt-stack);
}

.nt-faq__item {
	padding: 16px 20px;
}

.nt-faq__item summary {
	cursor: pointer;
}

.nt-faq__item summary > strong {
	display: inline-block;
}

.nt-faq__item[open] summary {
	margin-bottom: 0.5em;
}

/* ---------- LP hero image ---------- */

.nt-lp-hero {
	padding-block: 0;
}

.nt-lp-hero__img {
	width: 100%;
	height: auto;
	aspect-ratio: 16 / 7;
	object-fit: cover;
}

/* ---------- breadcrumbs ---------- */

.nt-breadcrumbs {
	font-size: var(--nt-fs-sm);
	color: var(--nt-color-muted);
	padding-block: 12px;
}

.nt-breadcrumbs ol {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.nt-breadcrumbs li {
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.nt-breadcrumbs li + li::before {
	content: "›";
	color: var(--nt-color-muted);
}

.nt-breadcrumbs a {
	color: var(--nt-color-muted);
	text-decoration: none;
}

.nt-breadcrumbs a:hover {
	color: var(--nt-color-primary);
}

.nt-breadcrumbs [aria-current="page"] {
	color: var(--nt-color-text);
}

/* ---------- page hero ---------- */

.nt-page-hero {
	background: var(--nt-bg-hero);
	padding-block: clamp(48px, 8vw, 96px);
	position: relative;
	overflow: hidden;
	isolation: isolate;
}

/* プリセット側で --nt-hero-decoration-opacity を上げると装飾が出る。
   既定の opacity は 0 なので corporate / tech / dark には影響しない。 */
.nt-page-hero::before {
	content: "";
	position: absolute;
	right: -8%;
	top: -40%;
	width: 50%;
	aspect-ratio: 1 / 1;
	background: radial-gradient(circle, var(--nt-color-accent) 0%, transparent 70%);
	opacity: var(--nt-hero-decoration-opacity);
	pointer-events: none;
	z-index: -1;
}

.nt-page-hero__title {
	margin-top: 0;
}

.nt-page-hero__lead {
	color: var(--nt-color-muted);
	max-width: 60ch;
}

/* ---------- post meta ---------- */

.nt-post-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 12px 18px;
	font-size: var(--nt-fs-sm);
	color: var(--nt-color-muted);
	margin-bottom: 1.5em;
}

.nt-post-meta__category {
	display: inline-block;
	background: var(--nt-color-primary);
	color: var(--nt-color-primary-contrast);
	padding: 2px 12px;
	border-radius: var(--nt-radius-pill);
	font-size: var(--nt-fs-xs);
	text-decoration: none;
	font-weight: 600;
}

.nt-post-meta__label {
	font-weight: 600;
	color: var(--nt-color-text);
}

/* ---------- pagination ---------- */

.nt-pagination {
	margin-block: var(--nt-gap);
}

.nt-pagination .page-numbers {
	display: inline-flex;
	min-width: 40px;
	height: 40px;
	align-items: center;
	justify-content: center;
	padding: 0 12px;
	border-radius: var(--nt-radius-sm);
	border: 1px solid var(--nt-color-border);
	color: var(--nt-color-text);
	text-decoration: none;
	margin: 2px;
}

.nt-pagination .page-numbers.current {
	background: var(--nt-color-primary);
	color: var(--nt-color-primary-contrast);
	border-color: var(--nt-color-primary);
}

.nt-pagination .page-numbers:hover:not(.current) {
	background: var(--nt-color-surface);
}

/* ---------- CTA section ---------- */

.nt-cta {
	background: var(--nt-bg-cta);
	color: var(--nt-fg-cta);
	padding-block: var(--nt-section-y);
	text-align: center;
}

.nt-cta__title {
	color: var(--nt-fg-cta);
	margin-top: 0;
}

.nt-cta__lead {
	color: color-mix(in srgb, var(--nt-fg-cta) 80%, transparent);
	max-width: 60ch;
	margin-inline: auto;
}

.nt-cta__actions {
	margin-top: var(--nt-gap);
	display: inline-flex;
	gap: 12px;
	flex-wrap: wrap;
	justify-content: center;
}

/* ---------- footer ---------- */

.nt-footer {
	background: var(--nt-bg-footer);
	color: var(--nt-fg-footer);
}

.nt-footer__main {
	padding-block: clamp(48px, 8vw, 96px);
	display: grid;
	gap: var(--nt-gap);
	grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 720px) {
	.nt-footer__main {
		grid-template-columns: 1.4fr 1fr 1fr;
	}
}

.nt-footer a {
	color: color-mix(in srgb, var(--nt-fg-footer) 90%, transparent);
	text-decoration: none;
}

.nt-footer a:hover {
	color: var(--nt-fg-footer);
	text-decoration: underline;
}

.nt-footer__brand-name {
	font-size: var(--nt-fs-lg);
	font-weight: 700;
	color: var(--nt-fg-footer);
	margin-bottom: 0.5em;
}

.nt-footer__logo {
	display: inline-block;
	margin-bottom: 0.5em;
	text-decoration: none;
}

.nt-footer__logo img,
.nt-footer__logo .custom-logo {
	max-height: 56px;
	width: auto;
	height: auto;
}

.nt-footer__menu {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 8px;
}

.nt-footer__bottom {
	border-top: 1px solid color-mix(in srgb, var(--nt-fg-footer) 15%, transparent);
	padding-block: 20px;
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 12px;
	font-size: var(--nt-fs-sm);
	color: color-mix(in srgb, var(--nt-fg-footer) 70%, transparent);
}

.nt-footer__utility {
	list-style: none;
	margin: 0;
	padding: 0;
	display: inline-flex;
	gap: 16px;
	flex-wrap: wrap;
}

/* ---------- footer share (v0.6) ---------- */

.nt-footer-share {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 10px;
	font-size: var(--nt-fs-sm);
}

.nt-footer-share__label {
	font-weight: 600;
	color: color-mix(in srgb, var(--nt-fg-footer) 80%, transparent);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	font-size: var(--nt-fs-xs);
}

.nt-footer-share__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: inline-flex;
	flex-wrap: wrap;
	gap: 6px;
}

.nt-footer-share__item {
	margin: 0;
	padding: 0;
}

.nt-footer-share__link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border-radius: var(--nt-radius-pill);
	color: color-mix(in srgb, var(--nt-fg-footer) 85%, transparent);
	background: color-mix(in srgb, var(--nt-fg-footer) 8%, transparent);
	border: 1px solid color-mix(in srgb, var(--nt-fg-footer) 18%, transparent);
	text-decoration: none;
	transition: color var(--nt-transition), background var(--nt-transition), border-color var(--nt-transition);
	position: relative;
}

.nt-footer-share__link:hover {
	color: var(--nt-fg-footer);
	background: color-mix(in srgb, var(--nt-fg-footer) 18%, transparent);
	border-color: color-mix(in srgb, var(--nt-fg-footer) 35%, transparent);
	text-decoration: none;
}

.nt-footer-share__link:focus-visible {
	outline: 2px solid var(--nt-color-primary);
	outline-offset: 2px;
}

.nt-footer-share__icon {
	width: 18px;
	height: 18px;
	display: block;
}

.nt-footer-share__link--copy.is-copied {
	color: var(--nt-color-primary-contrast);
	background: var(--nt-color-primary);
	border-color: var(--nt-color-primary);
}

/* ---------- post share (v0.7) ---------- */
/* footer share と同じ構造だが、投稿本文上 / 下に置くため
   背景色 (フッター暗色) ではなく本文ライト色に合わせる. */

.nt-post-share {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 10px;
	font-size: var(--nt-fs-sm);
	margin-block: var(--nt-stack);
	padding-block: 12px;
	border-top: 1px solid var(--nt-color-border);
	border-bottom: 1px solid var(--nt-color-border);
}

.nt-post-share--top {
	margin-block-start: 0;
}

.nt-post-share--bottom {
	margin-block-end: 0;
}

.nt-post-share__label {
	font-weight: 600;
	color: var(--nt-color-muted);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	font-size: var(--nt-fs-xs);
}

.nt-post-share__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: inline-flex;
	flex-wrap: wrap;
	gap: 6px;
}

.nt-post-share__item {
	margin: 0;
	padding: 0;
}

.nt-post-share__link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border-radius: var(--nt-radius-pill);
	color: var(--nt-color-muted);
	background: var(--nt-color-surface);
	border: 1px solid var(--nt-color-border);
	text-decoration: none;
	transition: color var(--nt-transition), background var(--nt-transition), border-color var(--nt-transition);
	position: relative;
}

.nt-post-share__link:hover {
	color: var(--nt-color-primary-contrast);
	background: var(--nt-color-primary);
	border-color: var(--nt-color-primary);
	text-decoration: none;
}

.nt-post-share__link:focus-visible {
	outline: 2px solid var(--nt-color-primary);
	outline-offset: 2px;
}

.nt-post-share__icon {
	width: 18px;
	height: 18px;
	display: block;
}

.nt-post-share__link--copy.is-copied {
	color: var(--nt-color-primary-contrast);
	background: var(--nt-color-primary);
	border-color: var(--nt-color-primary);
}

/* ---------- post table of contents (v0.7) ---------- */
/* シングル投稿の本文 h2/h3 から自動生成される目次。card surface 風で
   本文の邪魔にならず、折りたたみ ON/OFF を Customizer で制御する。 */

.nt-post-toc {
	margin-block: var(--nt-stack);
	padding: 16px 20px;
	background: var(--nt-color-surface);
	border: 1px solid var(--nt-color-border);
	border-radius: var(--nt-radius-md);
}

.nt-post-toc--after-title {
	margin-block-start: 0;
}

.nt-post-toc__toggle {
	display: flex;
	width: 100%;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	background: transparent;
	color: var(--nt-color-text);
	font-weight: 700;
	font-size: var(--nt-fs-md);
	padding: 0;
	cursor: pointer;
	text-align: left;
}

.nt-post-toc__toggle:hover .nt-post-toc__title {
	color: var(--nt-color-primary);
}

.nt-post-toc__toggle:focus-visible {
	outline: 2px solid var(--nt-color-primary);
	outline-offset: 2px;
}

.nt-post-toc__title {
	display: inline-block;
	font-weight: 700;
	font-size: var(--nt-fs-md);
	margin: 0;
}

.nt-post-toc__icon {
	width: 18px;
	height: 18px;
	flex: 0 0 18px;
	transition: transform var(--nt-transition);
}

.nt-post-toc.is-collapsed .nt-post-toc__icon {
	transform: rotate(-90deg);
}

.nt-post-toc__list {
	list-style: none;
	margin: 12px 0 0;
	padding: 0;
}

.nt-post-toc.is-collapsed .nt-post-toc__list {
	display: none;
}

.nt-post-toc__item {
	margin: 0;
	padding: 4px 0;
}

.nt-post-toc__item--h3 {
	padding-left: 20px;
}

.nt-post-toc__link {
	color: var(--nt-color-text);
	text-decoration: none;
	font-size: var(--nt-fs-sm);
	line-height: 1.5;
}

.nt-post-toc__link:hover {
	color: var(--nt-color-primary);
	text-decoration: underline;
}

.nt-post-toc__link:focus-visible {
	outline: 2px solid var(--nt-color-primary);
	outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
	.nt-post-toc__icon {
		transition: none;
	}
}

/* ---------- post author card (v0.7) ---------- */
/* シングル投稿の本文後に表示される薄い著者紹介ブロック。
   avatar 丸型 + 本文ライト背景前提の card surface 風。
   モバイルでは縦積み, デスクトップでは avatar が左に並ぶ。 */

.nt-author-card {
	display: flex;
	flex-direction: column;
	gap: 16px;
	margin-block: var(--nt-stack);
	padding: 20px;
	background: var(--nt-color-surface);
	border: 1px solid var(--nt-color-border);
	border-radius: var(--nt-radius-md);
}

@media (min-width: 600px) {
	.nt-author-card {
		flex-direction: row;
		align-items: flex-start;
	}
}

.nt-author-card__avatar {
	flex: 0 0 auto;
}

.nt-author-card__avatar-img {
	display: block;
	width: 72px;
	height: 72px;
	border-radius: var(--nt-radius-pill);
	object-fit: cover;
}

.nt-author-card__body {
	flex: 1 1 auto;
	min-width: 0;
}

.nt-author-card__eyebrow {
	margin: 0 0 4px;
	color: var(--nt-color-muted);
	font-size: var(--nt-fs-xs);
	letter-spacing: 0.06em;
	text-transform: uppercase;
	font-weight: 600;
}

.nt-author-card__name {
	margin: 0 0 8px;
	font-size: var(--nt-fs-md);
	font-weight: 700;
	line-height: 1.4;
}

.nt-author-card__name a {
	color: var(--nt-color-text);
	text-decoration: none;
}

.nt-author-card__name a:hover {
	color: var(--nt-color-primary);
	text-decoration: underline;
}

.nt-author-card__bio {
	color: var(--nt-color-muted);
	font-size: var(--nt-fs-sm);
	line-height: 1.6;
	margin: 0 0 8px;
}

.nt-author-card__bio p {
	margin: 0 0 0.5em;
}

.nt-author-card__bio p:last-child {
	margin-bottom: 0;
}

.nt-author-card__link {
	display: inline-block;
	font-size: var(--nt-fs-sm);
	color: var(--nt-color-primary);
	text-decoration: none;
	font-weight: 600;
}

.nt-author-card__link:hover {
	text-decoration: underline;
}

.nt-author-card__link:focus-visible {
	outline: 2px solid var(--nt-color-primary);
	outline-offset: 2px;
}

/* ---------- back to top ---------- */

.nt-back-to-top {
	position: fixed;
	right: 20px;
	bottom: 20px;
	width: 44px;
	height: 44px;
	border-radius: var(--nt-radius-pill);
	background: var(--nt-color-primary);
	color: var(--nt-color-primary-contrast);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	box-shadow: var(--nt-shadow-md);
	opacity: 0;
	pointer-events: none;
	transform: translateY(10px);
	transition: opacity var(--nt-transition), transform var(--nt-transition), background var(--nt-transition);
	z-index: var(--nt-z-overlay);
}

.nt-back-to-top.is-visible {
	opacity: 1;
	pointer-events: auto;
	transform: translateY(0);
}

.nt-back-to-top:hover {
	background: color-mix(in srgb, var(--nt-color-primary) 88%, black);
	color: var(--nt-color-primary-contrast);
}

.nt-back-to-top:focus-visible {
	outline: 2px solid var(--nt-color-primary-contrast);
	outline-offset: 3px;
}

.nt-back-to-top__icon {
	width: 20px;
	height: 20px;
}

@media (prefers-reduced-motion: reduce) {
	.nt-back-to-top {
		transform: none;
	}
}

/* ---------- comments ---------- */

.nt-comments {
	padding-block: var(--nt-section-y);
	background: var(--nt-color-bg);
}

.nt-comments__title {
	margin-top: 0;
	margin-bottom: var(--nt-stack);
}

.nt-comment-list {
	list-style: none;
	margin: 0 0 var(--nt-gap);
	padding: 0;
}

.nt-comment-list .children {
	list-style: none;
	margin: var(--nt-stack) 0 0;
	padding-left: clamp(16px, 4vw, 32px);
}

.nt-comment-list .comment-body,
.nt-comment-list .pingback .comment-body {
	border: 1px solid var(--nt-color-border);
	border-radius: var(--nt-radius-md);
	background: var(--nt-color-surface);
	padding: 16px 20px;
	margin-block-end: var(--nt-stack);
}

.nt-comment-list .comment-author {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-block-end: 0.5em;
}

.nt-comment-list .comment-author .avatar {
	border-radius: 50%;
}

.nt-comment-list .comment-meta,
.nt-comment-list .comment-metadata {
	font-size: var(--nt-fs-sm);
	color: var(--nt-color-muted);
	margin-block-end: 0.5em;
}

.nt-comment-list .comment-meta a,
.nt-comment-list .comment-metadata a {
	color: var(--nt-color-muted);
	text-decoration: none;
}

.nt-comment-list .reply {
	margin-top: 0.5em;
	font-size: var(--nt-fs-sm);
}

.nt-comments__pagination {
	margin-block: var(--nt-gap);
}

.nt-comments__closed {
	color: var(--nt-color-muted);
	font-size: var(--nt-fs-sm);
}

.nt-comment-form {
	display: grid;
	gap: 12px;
	margin-block-start: var(--nt-gap);
}

.nt-comment-form__title {
	margin-top: 0;
	margin-bottom: 0.5em;
}

.nt-comment-form .comment-form-comment label,
.nt-comment-form .comment-form-author label,
.nt-comment-form .comment-form-email label,
.nt-comment-form .comment-form-url label {
	display: block;
	font-weight: 600;
	margin-block-end: 4px;
}

.nt-comment-form .comment-notes,
.nt-comment-form .logged-in-as {
	color: var(--nt-color-muted);
	font-size: var(--nt-fs-sm);
}

.nt-comment-form .form-submit {
	margin-block-start: 8px;
}

/* ---------- sidebar / widgets ---------- */

.nt-sidebar {
	display: grid;
	gap: var(--nt-gap);
}

.nt-widget {
	background: var(--nt-color-surface);
	border: 1px solid var(--nt-color-border);
	border-radius: var(--nt-radius-md);
	padding: 16px 20px;
}

.nt-widget__title {
	font-size: var(--nt-fs-md);
	margin: 0 0 0.5em;
	line-height: 1.4;
}

.nt-widget ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.nt-widget li {
	border-bottom: 1px solid var(--nt-color-border);
	padding-block: 6px;
}

.nt-widget li:last-child {
	border-bottom: 0;
}

.nt-widget a {
	color: var(--nt-color-text);
	text-decoration: none;
}

.nt-widget a:hover {
	color: var(--nt-color-primary);
}

/* ---------- search form ---------- */

.search-form {
	display: flex;
	gap: 8px;
}

.search-form .search-field {
	flex: 1;
}

.search-form .search-submit {
	padding: 0.6em 1.2em;
	background: var(--nt-color-primary);
	color: var(--nt-color-primary-contrast);
	border: 0;
	border-radius: var(--nt-radius-sm);
	font-weight: 600;
}