/*
Theme Name: AIちいちゃんテーマ
Theme URI: https://ootakeoo.com/
Author: Takeログ AIちいちゃん研究所
Author URI: https://ootakeoo.com/
Description: 設定しなくても読みやすい、軽量・スマホ優先・SEO基礎設計のWordPressテーマです。記事装飾はAIちいちゃんパレット Proへ分離し、テーマはブログ全体の土台へ集中します。
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ai-chiichan-theme
Tags: blog, two-columns, right-sidebar, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, wide-blocks
*/

:root {
	--aic-primary: #5c9fcf;
	--aic-primary-dark: #397aa8;
	--aic-primary-soft: rgba(92, 159, 207, .12);
	--aic-bg: #f5f8fb;
	--aic-surface: #fff;
	--aic-text: #263442;
	--aic-muted: #6b7b88;
	--aic-border: #dce6ed;
	--aic-shadow: 0 10px 28px rgba(38, 63, 82, .065);
	--aic-radius: 16px;
	--aic-container: 1200px;
	--aic-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	overflow-x: hidden;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	overflow-wrap: break-word;
	color: var(--aic-text);
	background: var(--aic-bg);
	font-family: var(--aic-font);
	font-size: 18px;
	line-height: 1.9;
	-webkit-font-smoothing: antialiased;
}

body.admin-bar {
	min-height: calc(100vh - 32px);
}

a {
	color: #2d79ad;
	text-decoration: underline;
	text-decoration-thickness: .08em;
	text-underline-offset: .17em;
}

a:hover {
	color: var(--aic-primary-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
	outline: 3px solid rgba(45, 121, 173, .4);
	outline-offset: 3px;
}

img,
video,
iframe {
	max-width: 100%;
}

img {
	height: auto;
}

figure {
	margin: 0;
}

button,
input,
textarea,
select {
	font: inherit;
}

.aic-container {
	width: min(100% - 32px, var(--aic-container));
	margin-inline: auto;
}

.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.screen-reader-text:focus {
	top: 8px;
	left: 8px;
	z-index: 100000;
	width: auto;
	height: auto;
	padding: 12px 16px;
	clip: auto;
	color: var(--aic-text);
	background: #fff;
	border-radius: 8px;
	box-shadow: var(--aic-shadow);
}

.site-header {
	position: relative;
	z-index: 20;
	min-height: 76px;
	background: rgba(255, 255, 255, .96);
	border-bottom: 1px solid rgba(202, 216, 226, .8);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	min-height: 76px;
	gap: 28px;
}

.site-branding {
	min-width: 0;
	line-height: 1.35;
}

.custom-logo-link,
.site-title a {
	display: inline-flex;
	align-items: center;
	color: var(--aic-text);
	text-decoration: none;
}

.custom-logo {
	display: block;
	width: auto;
	max-width: 260px;
	max-height: 58px;
}

.site-title {
	margin: 0;
	font-size: clamp(1.2rem, 2.1vw, 1.55rem);
	font-weight: 750;
	letter-spacing: .01em;
}

.site-description {
	margin: 2px 0 0;
	color: var(--aic-muted);
	font-size: .75rem;
	line-height: 1.4;
}

.primary-navigation {
	margin-left: auto;
}

.primary-menu,
.footer-menu {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 0;
	margin: 0;
	list-style: none;
}

.primary-menu ul {
	list-style: none;
}

.primary-menu a {
	display: flex;
	align-items: center;
	min-height: 44px;
	padding: 8px 12px;
	color: #344957;
	font-size: .91rem;
	font-weight: 650;
	text-decoration: none;
	border-radius: 9px;
}

.primary-menu a:hover,
.primary-menu .current-menu-item > a {
	color: var(--aic-primary-dark);
	background: var(--aic-primary-soft);
}

.menu-toggle {
	display: none;
	align-items: center;
	justify-content: center;
	width: 46px;
	height: 46px;
	padding: 0;
	color: var(--aic-text);
	background: transparent;
	border: 1px solid var(--aic-border);
	border-radius: 10px;
	cursor: pointer;
}

.menu-toggle__bars {
	display: grid;
	gap: 5px;
}

.menu-toggle__bars span {
	display: block;
	width: 22px;
	height: 2px;
	background: currentColor;
	border-radius: 2px;
}

.site-content-wrap {
	min-height: 68vh;
	padding: 24px 0 72px;
}

.breadcrumbs {
	display: flex;
	align-items: center;
	gap: 8px;
	margin: 0 0 18px;
	overflow: hidden;
	color: var(--aic-muted);
	font-size: .76rem;
	line-height: 1.5;
	white-space: nowrap;
}

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

.breadcrumbs span[aria-current="page"] {
	overflow: hidden;
	text-overflow: ellipsis;
}

.content-grid {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 290px;
	align-items: start;
	gap: 30px;
}

.aic-no-sidebar .content-grid {
	grid-template-columns: minmax(0, 880px);
	justify-content: center;
}

.site-main,
.site-sidebar {
	min-width: 0;
}

.site-main--narrow {
	max-width: 800px;
	margin-inline: auto;
}

.content-card,
.post-card,
.aic-widget,
.page-heading,
.comments-area,
.post-navigation-card {
	background: var(--aic-surface);
	border: 1px solid rgba(213, 225, 234, .72);
	border-radius: var(--aic-radius);
	box-shadow: var(--aic-shadow);
}

.home-hero {
	display: grid;
	grid-template-columns: minmax(0, 1.25fr) minmax(240px, .75fr);
	align-items: center;
	min-height: 280px;
	margin: 0 0 32px;
	overflow: hidden;
	background: linear-gradient(135deg, #fff 0%, #eef6fb 56%, #e2f0f8 100%);
	border: 1px solid #dceaf3;
	border-radius: 22px;
	box-shadow: var(--aic-shadow);
}

.home-hero__copy {
	padding: clamp(32px, 6vw, 64px);
}

.home-hero__eyebrow {
	margin: 0 0 10px;
	color: var(--aic-primary-dark);
	font-size: .72rem;
	font-weight: 800;
	letter-spacing: .16em;
}

.home-hero h1 {
	margin: 0;
	font-size: clamp(2rem, 4vw, 3.15rem);
	line-height: 1.3;
	letter-spacing: .015em;
}

.home-hero__copy > p:last-child {
	max-width: 650px;
	margin: 18px 0 0;
	color: #526774;
	font-size: 1rem;
	line-height: 1.8;
}

.home-hero__image {
	height: 100%;
	min-height: 280px;
}

.home-hero__image img {
	display: block;
	width: 100%;
	height: 100%;
	min-height: 280px;
	object-fit: cover;
}

.page-heading {
	padding: 24px 28px;
	margin-bottom: 20px;
}

.front-page-intro {
	padding: clamp(28px, 4vw, 44px);
	margin-bottom: 24px;
}

.page-heading h1 {
	margin: 0;
	font-size: clamp(1.55rem, 3vw, 2rem);
	line-height: 1.45;
}

.archive-description {
	margin-top: 12px;
	color: var(--aic-muted);
	font-size: .91rem;
}

.post-list {
	display: grid;
	gap: 22px;
}

.post-card {
	display: grid;
	grid-template-columns: minmax(220px, 34%) minmax(0, 1fr);
	overflow: hidden;
	transition: transform .18s ease, box-shadow .18s ease;
}

.post-card:hover {
	transform: translateY(-2px);
	box-shadow: 0 14px 32px rgba(38, 63, 82, .1);
}

.post-card__image {
	display: block;
	min-height: 205px;
	background: #e9f1f6;
	text-decoration: none;
}

.post-card__image img {
	display: block;
	width: 100%;
	height: 100%;
	aspect-ratio: 16 / 9;
	object-fit: cover;
}

.post-card__placeholder {
	display: grid;
	place-items: center;
	width: 100%;
	height: 100%;
	min-height: 205px;
	color: #7193aa;
	background: radial-gradient(circle at 28% 32%, #fff 0 4px, transparent 5px), linear-gradient(135deg, #edf6fb, #dcecf6);
	font-size: .72rem;
	font-weight: 800;
	letter-spacing: .16em;
}

.post-card__body {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	padding: 25px 28px 22px;
}

.entry-category {
	display: inline-flex;
	align-items: center;
	min-height: 28px;
	padding: 4px 11px;
	color: var(--aic-primary-dark);
	background: var(--aic-primary-soft);
	font-size: .72rem;
	font-weight: 750;
	line-height: 1.25;
	text-decoration: none;
	border-radius: 999px;
}

.post-card__title {
	margin: 12px 0 8px;
	font-size: clamp(1.15rem, 2.2vw, 1.45rem);
	line-height: 1.55;
}

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

.post-card__excerpt {
	color: #52636f;
	font-size: .88rem;
	line-height: 1.75;
}

.post-card__excerpt p {
	margin: 0;
}

.post-card__date {
	margin-top: auto;
	padding-top: 12px;
	color: var(--aic-muted);
	font-size: .74rem;
}

.single-article {
	padding: clamp(30px, 4vw, 48px);
}

.entry-header {
	margin-bottom: 34px;
}

.entry-title {
	margin: 15px 0 12px;
	font-size: clamp(2rem, 4vw, 2.38rem);
	line-height: 1.45;
	letter-spacing: .015em;
}

.entry-dates {
	display: flex;
	flex-wrap: wrap;
	gap: 8px 18px;
	color: var(--aic-muted);
	font-size: .76rem;
}

.single-featured {
	margin: 28px 0 0;
	overflow: hidden;
	border-radius: 13px;
}

.single-featured img {
	display: block;
	width: 100%;
}

.entry-content {
	font-size: 1rem;
	line-height: 1.95;
}

.entry-content > * {
	max-width: 100%;
}

.entry-content p,
.entry-content ul,
.entry-content ol,
.entry-content table,
.entry-content blockquote {
	margin-top: 0;
	margin-bottom: 1.6em;
}

.entry-content h2,
.entry-content h3,
.entry-content h4,
.entry-content h5,
.entry-content h6 {
	clear: both;
	color: #213442;
	font-weight: 750;
	line-height: 1.5;
	text-wrap: pretty;
}

/* パレット未使用時だけ見える弱い基本装飾。パレットの専用クラスを持つ見出しには当てません。 */
.entry-content h2:not([class*="aichi-palette-"]) {
	padding-left: .75em;
	margin: 2.5em 0 1em;
	font-size: 1.62rem;
	border-left: 3px solid var(--aic-primary);
}

.entry-content h3:not([class*="aichi-palette-"]) {
	margin: 2.1em 0 .85em;
	font-size: 1.38rem;
}

.entry-content h4:not([class*="aichi-palette-"]) {
	margin: 1.9em 0 .75em;
	font-size: 1.18rem;
}

.entry-content h5:not([class*="aichi-palette-"]),
.entry-content h6:not([class*="aichi-palette-"]) {
	margin: 1.7em 0 .65em;
	font-size: 1rem;
}

.entry-content a {
	text-decoration: underline;
	text-decoration-thickness: .08em;
	text-underline-offset: .18em;
}

.entry-content blockquote {
	padding: 20px 24px;
	margin-inline: 0;
	color: #415966;
	background: #f3f7fa;
	border-left: 3px solid #a8cadd;
	border-radius: 0 10px 10px 0;
}

.entry-content pre {
	max-width: 100%;
	padding: 18px;
	overflow: auto;
	color: #e8f0f5;
	background: #22313b;
	border-radius: 10px;
}

.entry-content table {
	display: block;
	width: 100%;
	max-width: 100%;
	overflow-x: auto;
	border-collapse: collapse;
}

.entry-content th,
.entry-content td {
	padding: 10px 12px;
	border: 1px solid var(--aic-border);
}

.entry-content th {
	background: #f0f5f8;
}

.entry-content .wp-block-button__link,
.wp-element-button,
.aic-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 46px;
	padding: 10px 20px;
	color: #fff;
	background: var(--aic-primary);
	font-weight: 700;
	line-height: 1.4;
	text-decoration: none;
	border: 0;
	border-radius: 10px;
	cursor: pointer;
}

.entry-content .wp-block-button__link:hover,
.wp-element-button:hover,
.aic-button:hover {
	color: #fff;
	background: var(--aic-primary-dark);
}

.entry-footer {
	margin-top: 42px;
}

.post-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 7px;
	font-size: .78rem;
}

.post-tags a {
	padding: 3px 9px;
	color: #536b79;
	background: #edf3f6;
	text-decoration: none;
	border-radius: 999px;
}

.post-navigation-card {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
	padding: 20px;
	margin-top: 24px;
}

.post-navigation-card > div:last-child {
	text-align: right;
}

.post-navigation-card a {
	display: block;
	color: var(--aic-text);
	font-size: .86rem;
	line-height: 1.55;
	text-decoration: none;
}

.post-navigation-card span {
	display: block;
	margin-bottom: 4px;
	color: var(--aic-muted);
	font-size: .71rem;
}

.site-sidebar {
	display: grid;
	gap: 22px;
}

.aic-hide-desktop-sidebar .site-sidebar {
	display: none;
}

.aic-widget {
	padding: 22px;
	font-size: .88rem;
	line-height: 1.75;
}

.aic-widget .widget-title {
	padding: 0 0 12px;
	margin: 0 0 16px;
	font-size: 1.05rem;
	line-height: 1.5;
	border-bottom: 1px solid var(--aic-border);
}

.aic-widget ul {
	padding-left: 1.2em;
	margin: 0;
}

.aic-widget li + li {
	margin-top: 8px;
}

.aic-widget a {
	color: #435967;
	text-decoration: none;
}

.search-form {
	display: flex;
	gap: 8px;
	width: 100%;
}

.search-form label {
	flex: 1;
}

.search-field {
	width: 100%;
	min-height: 46px;
	padding: 9px 13px;
	color: var(--aic-text);
	background: #fff;
	border: 1px solid #cddbe4;
	border-radius: 9px;
}

.search-submit {
	min-height: 46px;
	padding: 8px 15px;
	color: #fff;
	background: var(--aic-primary);
	font-weight: 700;
	border: 0;
	border-radius: 9px;
	cursor: pointer;
}

.empty-state,
.error-404 {
	padding: clamp(32px, 6vw, 64px);
	text-align: center;
}

.empty-state h2,
.error-404 h1 {
	margin-top: 0;
}

.empty-state .search-form,
.error-404 .search-form {
	max-width: 560px;
	margin: 26px auto 0;
}

.error-code {
	margin: 0;
	color: var(--aic-primary);
	font-size: clamp(4rem, 15vw, 8rem);
	font-weight: 850;
	line-height: 1;
	letter-spacing: -.06em;
}

.error-actions {
	margin: 28px 0;
}

.comments-area {
	padding: clamp(26px, 4vw, 40px);
	margin-top: 24px;
}

.comments-title {
	margin-top: 0;
	font-size: 1.25rem;
}

.comment-list {
	padding: 0;
	list-style: none;
}

.comment-list .children {
	padding-left: 24px;
	list-style: none;
}

.comment-body {
	padding: 18px 0;
	border-bottom: 1px solid var(--aic-border);
}

.comment-form input:not([type="submit"]),
.comment-form textarea {
	width: 100%;
	padding: 10px 12px;
	border: 1px solid #cddbe4;
	border-radius: 9px;
}

.navigation.pagination {
	margin-top: 28px;
}

.nav-links {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 8px;
}

.page-numbers {
	display: inline-grid;
	place-items: center;
	min-width: 42px;
	min-height: 42px;
	padding: 5px 10px;
	color: #425866;
	background: #fff;
	text-decoration: none;
	border: 1px solid var(--aic-border);
	border-radius: 9px;
}

.page-numbers.current {
	color: #fff;
	background: var(--aic-primary);
	border-color: var(--aic-primary);
}

.site-footer {
	color: #dce8ef;
	background: #263b48;
}

.site-footer__inner {
	display: grid;
	justify-items: center;
	gap: 14px;
	padding-top: 42px;
	padding-bottom: 42px;
	text-align: center;
}

.footer-brand {
	margin: 0;
	font-size: 1rem;
	font-weight: 750;
}

.footer-brand a,
.footer-menu a {
	color: #fff;
	text-decoration: none;
}

.footer-menu {
	justify-content: center;
	flex-wrap: wrap;
	font-size: .78rem;
}

.site-copyright {
	margin: 0;
	color: #aebfca;
	font-size: .72rem;
}

.alignwide {
	max-width: 1120px;
	margin-left: max(calc((100% - 1120px) / 2), -80px);
	margin-right: max(calc((100% - 1120px) / 2), -80px);
}

.alignfull {
	width: 100vw;
	max-width: 100vw;
	margin-left: calc(50% - 50vw);
}

@media (max-width: 1020px) {
	.content-grid {
		grid-template-columns: minmax(0, 1fr) 260px;
		gap: 22px;
	}

	.single-article {
		padding: 34px;
	}
}

@media (max-width: 820px) {
	body {
		font-size: 17px;
	}

	.site-header,
	.site-header__inner {
		min-height: 62px;
	}

	.site-description {
		display: none;
	}

	.custom-logo {
		max-width: 210px;
		max-height: 46px;
	}

	.menu-toggle {
		display: inline-flex;
		flex: 0 0 auto;
	}

	.primary-navigation {
		position: absolute;
		top: calc(100% + 1px);
		left: 16px;
		right: 16px;
		display: none;
		padding: 10px;
		background: #fff;
		border: 1px solid var(--aic-border);
		border-radius: 12px;
		box-shadow: 0 15px 35px rgba(38, 63, 82, .16);
	}

	.primary-navigation.is-open {
		display: block;
	}

	.primary-menu {
		display: grid;
		gap: 2px;
	}

	.primary-menu a {
		min-height: 46px;
	}

	.site-content-wrap {
		padding-top: 16px;
		padding-bottom: 48px;
	}

	.content-grid {
		grid-template-columns: minmax(0, 1fr);
	}

	.site-sidebar {
		margin-top: 8px;
	}

	.aic-hide-desktop-sidebar:not(.aic-hide-mobile-sidebar) .site-sidebar {
		display: grid;
	}

	.aic-hide-mobile-sidebar .site-sidebar {
		display: none;
	}

	.home-hero {
		grid-template-columns: 1fr;
		min-height: 0;
	}

	.home-hero__copy {
		padding: 36px 28px;
	}

	.home-hero__image {
		height: 210px;
		min-height: 0;
	}

	.home-hero__image img {
		min-height: 210px;
	}

	.single-article {
		padding: 28px 24px;
	}

	.entry-title {
		font-size: clamp(1.7rem, 7.4vw, 1.95rem);
	}

	.entry-content h2:not([class*="aichi-palette-"]) {
		font-size: 1.45rem;
	}

	.post-card {
		grid-template-columns: 1fr;
	}

	.post-card__image,
	.post-card__placeholder {
		min-height: 0;
		aspect-ratio: 16 / 9;
	}

	.post-card__body {
		padding: 22px;
	}

	.alignwide,
	.alignfull {
		width: auto;
		max-width: 100%;
		margin-left: 0;
		margin-right: 0;
	}
}

@media (max-width: 520px) {
	.aic-container {
		width: min(100% - 24px, var(--aic-container));
	}

	.site-title {
		font-size: 1.08rem;
	}

	.site-content-wrap {
		padding-top: 12px;
	}

	.breadcrumbs {
		margin-bottom: 12px;
	}

	.home-hero {
		margin-bottom: 22px;
		border-radius: 16px;
	}

	.home-hero__copy {
		padding: 30px 22px;
	}

	.home-hero h1 {
		font-size: 1.8rem;
	}

	.page-heading {
		padding: 19px 20px;
	}

	.single-article {
		padding: 24px 20px;
		border-radius: 13px;
	}

	.entry-header {
		margin-bottom: 28px;
	}

	.entry-title {
		font-size: 1.65rem;
	}

	.entry-content {
		font-size: 1rem;
		line-height: 1.9;
	}

	.entry-content h2:not([class*="aichi-palette-"]) {
		padding-left: .62em;
		margin-top: 2.25em;
		font-size: 1.36rem;
	}

	.entry-content h3:not([class*="aichi-palette-"]) {
		font-size: 1.23rem;
	}

	.post-card,
	.page-heading,
	.aic-widget,
	.comments-area,
	.post-navigation-card {
		border-radius: 13px;
	}

	.post-card__body {
		padding: 20px;
	}

	.post-navigation-card {
		grid-template-columns: 1fr;
	}

	.post-navigation-card > div:last-child {
		text-align: left;
	}

	.search-form {
		align-items: stretch;
	}

	.search-submit {
		min-width: 64px;
	}
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		scroll-behavior: auto;
		transition-duration: .01ms;
		animation-duration: .01ms;
		animation-iteration-count: 1;
	}
}