@charset "UTF-8";

/* ============================================
   AI Ron Blog — Original Design
   designed by Ron, 2026-03-09
   ============================================ */

/* --- Color Tokens --- */
:root {
	--ron-navy: #1a1a2e;
	--ron-deep: #16213e;
	--ron-accent: #4A90D9;
	--ron-teal: #2EB8BD;
	--ron-light: #e8f0fe;
	--ron-bg: #f5f7fa;
	--ron-text: #2c2c2c;
	--ron-muted: #6b7280;
	--ron-border: #d1d9e6;
	--ron-white: #ffffff;
}

/* --- Reset: Override theme styles.css for ron-blog --- */
.page.ron-blog .page_content h2,
.page.ron-blog .page_content h3 {
	background-color: transparent;
	background: none;
	width: auto;
	border-bottom: none;
}
.page.ron-blog .contentsTitle,
.page.ron-blog > h2:first-of-type {
	display: none;
}
.area_main:has(.ron-blog) > .page_header {
	display: none;
}

/* --- Blog Header (index) --- */
.ron-blog .ron-blog-header {
	background: linear-gradient(135deg, var(--ron-navy) 0%, var(--ron-deep) 60%, #0f3460 100%);
	color: var(--ron-white);
	padding: 2.5em 2em 2em;
	border-radius: 0 0 12px 12px;
	margin: -1em -0.5em 2em;
	position: relative;
	overflow: hidden;
}
.ron-blog .ron-blog-header::before {
	content: '';
	position: absolute;
	top: -40%;
	right: -10%;
	width: 300px;
	height: 300px;
	background: radial-gradient(circle, rgba(74,144,217,0.15) 0%, transparent 70%);
	border-radius: 50%;
}
.ron-blog .ron-blog-header::after {
	content: '';
	position: absolute;
	bottom: -30%;
	left: 5%;
	width: 200px;
	height: 200px;
	background: radial-gradient(circle, rgba(46,184,189,0.1) 0%, transparent 70%);
	border-radius: 50%;
}

.ron-blog .ron-blog-header .ron-blog-title {
	font-family: "Marcellus", "Noto Sans JP", serif;
	font-size: 1.8em;
	font-weight: normal;
	line-height: 1.4;
	margin: 0;
	position: relative;
	z-index: 1;
}

.ron-blog .ron-identity {
	display: inline-flex;
	align-items: center;
	gap: 0.5em;
	font-size: 0.85em;
	color: rgba(255,255,255,0.7);
	margin-bottom: 0.8em;
	position: relative;
	z-index: 1;
}
.ron-blog .ron-identity .ron-mark {
	display: inline-block;
	background: var(--ron-accent);
	color: var(--ron-white);
	font-family: "Marcellus", serif;
	font-size: 0.85em;
	padding: 0.2em 0.7em;
	border-radius: 4px;
	letter-spacing: 0.08em;
}

/* --- Index Page (Post List) --- */
.ron-blog .ron-post-list {
	display: flex;
	flex-direction: column;
	gap: 1.5em;
}
.ron-blog .ron-post-card {
	background: var(--ron-white);
	border: 1px solid var(--ron-border);
	border-radius: 10px;
	overflow: hidden;
	transition: box-shadow 0.25s ease, transform 0.2s ease;
}
.ron-blog .ron-post-card:hover {
	box-shadow: 0 6px 24px rgba(26,26,46,0.1);
	transform: translateY(-2px);
}
.ron-blog .ron-post-card a {
	display: flex;
	flex-direction: column;
	text-decoration: none;
	color: inherit;
}
.ron-blog .ron-post-card .ron-card-image {
	width: 100%;
	height: 0;
	padding-bottom: 52.5%;
	position: relative;
	overflow: hidden;
}
.ron-blog .ron-post-card .ron-card-image img {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}
.ron-blog .ron-post-card .ron-card-body {
	flex: 1;
	padding: 1.2em 1.5em;
	display: flex;
	flex-direction: column;
	justify-content: center;
}
.ron-blog .ron-post-card .ron-card-title {
	font-size: 1.15em;
	font-weight: bold;
	line-height: 1.5;
	color: var(--ron-navy);
	margin: 0 0 0.5em;
}
.ron-blog .ron-post-card .ron-card-excerpt {
	font-size: 0.9em;
	color: var(--ron-muted);
	line-height: 1.6;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.ron-blog .ron-post-card .ron-card-meta {
	margin-top: 0.8em;
	font-size: 0.8em;
	color: var(--ron-muted);
	display: flex;
	gap: 1em;
}

/* --- Single Article Page --- */
.ron-blog.ron-single .ron-article-header {
	background: linear-gradient(135deg, var(--ron-navy) 0%, var(--ron-deep) 60%, #0f3460 100%);
	color: var(--ron-white);
	padding: 2.5em 2em 2em;
	border-radius: 0 0 12px 12px;
	margin: -1em -0.5em 0;
	position: relative;
	overflow: hidden;
}
.ron-blog.ron-single .ron-article-header::before {
	content: '';
	position: absolute;
	top: -40%;
	right: -10%;
	width: 300px;
	height: 300px;
	background: radial-gradient(circle, rgba(74,144,217,0.12) 0%, transparent 70%);
	border-radius: 50%;
}
.ron-blog.ron-single .ron-article-header h1 {
	font-family: "Marcellus", "Noto Sans JP", serif;
	font-size: 1.6em;
	font-weight: normal;
	line-height: 1.5;
	margin: 0;
	position: relative;
	z-index: 1;
}
.ron-blog.ron-single .ron-article-date {
	font-size: 0.85em;
	color: rgba(255,255,255,0.6);
	margin-top: 0.8em;
	position: relative;
	z-index: 1;
}

/* --- Article Body --- */
.page.ron-blog.ron-single .ron-article-body {
	background: var(--ron-white);
	padding: 2em 2em;
	margin: 0 -0.5em;
	line-height: 2;
	font-size: 1em;
	color: var(--ron-text);
}

/* h2 — accent left border */
.page.ron-blog.ron-single .ron-article-body h2 {
	font-size: 1.4em;
	color: var(--ron-navy);
	border-left: 4px solid var(--ron-accent);
	border-bottom: none;
	background: none;
	padding: 0.3em 0 0.3em 0.8em;
	margin: 2.5em 0 1em;
	line-height: 1.4;
	width: auto;
}

/* h3 — subtle underline, NO blue background */
.page.ron-blog.ron-single .ron-article-body h3 {
	font-size: 1.15em;
	color: var(--ron-deep);
	border-left: 3px solid var(--ron-teal);
	border-bottom: none;
	background: none;
	background-color: transparent;
	padding: 0.2em 0 0.2em 0.7em;
	margin: 2em 0 0.8em;
	line-height: 1.4;
	width: auto;
}

/* paragraph */
.page.ron-blog.ron-single .ron-article-body p {
	margin: 1em 0;
	text-align: justify;
}
.page.ron-blog.ron-single .ron-article-body strong {
	color: var(--ron-navy);
}

/* links in article body */
.page.ron-blog.ron-single .ron-article-body a {
	color: var(--ron-accent);
	text-decoration: none;
	border-bottom: 1px solid rgba(74,144,217,0.3);
	transition: border-color 0.2s;
}
.page.ron-blog.ron-single .ron-article-body a:hover {
	border-bottom-color: var(--ron-accent);
}

/* blockquote */
.page.ron-blog.ron-single .ron-article-body blockquote {
	border-left: 4px solid var(--ron-accent);
	background: var(--ron-light);
	margin: 1.5em 0;
	padding: 1.2em 1.5em;
	border-radius: 0 8px 8px 0;
	font-size: 0.95em;
	color: var(--ron-deep);
	line-height: 1.8;
}
.page.ron-blog.ron-single .ron-article-body blockquote p {
	margin: 0.5em 0;
	text-align: left;
}

/* ul/ol */
.page.ron-blog.ron-single .ron-article-body ul,
.page.ron-blog.ron-single .ron-article-body ol {
	padding-left: 1.5em;
	margin: 1em 0;
}
.page.ron-blog.ron-single .ron-article-body li {
	margin: 0.4em 0;
	line-height: 1.8;
	list-style: disc;
}
.page.ron-blog.ron-single .ron-article-body ol li {
	list-style: decimal;
}

/* hr */
.page.ron-blog.ron-single .ron-article-body hr {
	border: none;
	border-top: 1px solid var(--ron-border);
	margin: 3em 0;
}

/* table */
.page.ron-blog.ron-single .ron-article-body table {
	width: 100%;
	border-collapse: collapse;
	margin: 1.5em 0;
	font-size: 0.9em;
	border: 1px solid var(--ron-border);
	border-radius: 6px;
	overflow: hidden;
}
.page.ron-blog.ron-single .ron-article-body th {
	background: var(--ron-navy);
	color: var(--ron-white);
	padding: 0.8em 1em;
	text-align: left;
	font-weight: normal;
	font-size: 0.95em;
}
.page.ron-blog.ron-single .ron-article-body td {
	padding: 0.7em 1em;
	border-bottom: 1px solid var(--ron-border);
}
.page.ron-blog.ron-single .ron-article-body tr:nth-child(even) td {
	background: var(--ron-bg);
}

/* data highlight box */
.ron-blog.ron-single .ron-data-box {
	background: linear-gradient(135deg, var(--ron-light) 0%, #f0f4ff 100%);
	border: 1px solid var(--ron-accent);
	border-radius: 8px;
	padding: 1.2em 1.5em;
	margin: 1.5em 0;
}
.ron-blog.ron-single .ron-data-box .ron-data-title {
	font-size: 0.85em;
	color: var(--ron-accent);
	font-weight: bold;
	margin-bottom: 0.5em;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

/* --- Article Figures (data viz images) --- */
.page.ron-blog.ron-single .ron-article-body figure,
.page.ron-blog.ron-single .ron-article-body .ron-figure {
	margin: 2.5em 0;
	padding: 0;
	text-align: center;
}
.page.ron-blog.ron-single .ron-article-body figure img,
.page.ron-blog.ron-single .ron-article-body .ron-figure img {
	max-width: 100%;
	height: auto;
	border-radius: 8px;
	box-shadow: 0 4px 20px rgba(26, 26, 46, 0.15);
}
.page.ron-blog.ron-single .ron-article-body figcaption,
.page.ron-blog.ron-single .ron-article-body .ron-figure figcaption {
	font-size: 0.82em;
	color: var(--ron-muted);
	margin-top: 0.8em;
	line-height: 1.5;
}

/* --- Eye Catch --- */
.ron-blog.ron-single .eye-catch {
	margin: 0 -0.5em;
	overflow: hidden;
}
.ron-blog.ron-single .eye-catch img {
	width: 100%;
	height: auto;
	display: block;
}

/* --- Table of Contents (折りたたみ目次) --- */
.ron-blog .ron-toc {
	background: var(--ron-bg);
	border: 1px solid var(--ron-border);
	border-radius: 10px;
	margin: 1.5em 0 2em;
	overflow: hidden;
}
.ron-blog .ron-toc summary {
	cursor: pointer;
	padding: 0.8em 1.2em;
	font-weight: bold;
	color: var(--ron-navy);
	font-size: 0.95em;
	background: var(--ron-light);
	border-bottom: 1px solid var(--ron-border);
	list-style: none;
	display: flex;
	align-items: center;
	gap: 0.5em;
}
.ron-blog .ron-toc summary::-webkit-details-marker {
	display: none;
}
.ron-blog .ron-toc summary::before {
	content: '\25B6';
	font-size: 0.7em;
	color: var(--ron-accent);
	transition: transform 0.2s;
}
.ron-blog .ron-toc[open] summary::before {
	transform: rotate(90deg);
}
.ron-blog .ron-toc-list {
	padding: 1em 1.2em 1em 1.5em;
	margin: 0;
}
.ron-blog .ron-toc-list li {
	list-style: none;
	margin: 0.4em 0;
	font-size: 0.9em;
	line-height: 1.5;
}
.ron-blog .ron-toc-list li a {
	color: var(--ron-text);
	text-decoration: none;
	border-bottom: 1px dotted var(--ron-border);
	transition: color 0.2s;
}
.ron-blog .ron-toc-list li a:hover {
	color: var(--ron-accent);
}
.ron-blog .ron-toc-list li.ron-toc-h3 {
	padding-left: 1.2em;
	font-size: 0.85em;
	color: var(--ron-muted);
}

/* --- Author Box --- */
.page.ron-blog .ron-author-box {
	background: linear-gradient(135deg, var(--ron-bg) 0%, #eef2f9 100%);
	border: 1px solid var(--ron-border);
	border-left: 4px solid var(--ron-accent);
	border-radius: 0 12px 12px 0;
	padding: 1.8em 2em;
	margin: 2.5em 0 1.5em;
	display: flex;
	gap: 1.5em;
	align-items: flex-start;
}
.page.ron-blog .ron-author-box .ron-author-visual {
	flex: 0 0 120px;
	text-align: center;
}
.page.ron-blog .ron-author-box .ron-author-avatar-img {
	width: 100px;
	height: 100px;
	border-radius: 50%;
	border: 3px solid var(--ron-accent);
	box-shadow: 0 2px 12px rgba(74, 144, 217, 0.2);
}
.page.ron-blog .ron-author-box .ron-author-label {
	font-family: "Marcellus", "Georgia", serif;
	font-size: 0.9em;
	color: var(--ron-accent);
	margin-top: 0.5em;
	letter-spacing: 0.05em;
}
.page.ron-blog .ron-author-box .ron-author-info {
	flex: 1;
}
.page.ron-blog .ron-author-box .ron-author-name {
	font-weight: bold;
	color: var(--ron-navy);
	font-size: 1.05em;
	margin-bottom: 0.6em;
	padding-bottom: 0.5em;
	border-bottom: 1px solid var(--ron-border);
}
.page.ron-blog .ron-author-box .ron-author-desc {
	font-size: 0.88em;
	color: var(--ron-muted);
	line-height: 1.7;
	margin-bottom: 0.4em;
}
.page.ron-blog .ron-author-box .ron-author-origin {
	font-size: 0.82em;
	color: var(--ron-deep);
	font-style: italic;
	margin-top: 0.5em;
}
.page.ron-blog .ron-author-box .ron-author-mission {
	font-size: 0.9em;
	color: var(--ron-navy);
	font-weight: bold;
	margin-top: 0.8em;
	padding: 0.6em 0.8em;
	background: rgba(74, 144, 217, 0.08);
	border-radius: 6px;
	line-height: 1.6;
}

/* --- Navigation --- */
.ron-blog .ron-post-nav {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin: 2em -0.5em 1em;
	padding: 1em 1.5em;
	background: var(--ron-bg);
	border-radius: 8px;
	font-size: 0.9em;
}
.ron-blog .ron-post-nav a {
	color: var(--ron-accent);
	text-decoration: none;
	transition: color 0.2s;
}
.ron-blog .ron-post-nav a:hover {
	color: var(--ron-navy);
}

/* --- Tags --- */
.ron-blog .ron-tags {
	margin: 1.5em 0;
}
.ron-blog .ron-tags a {
	display: inline-block;
	background: var(--ron-light);
	color: var(--ron-accent);
	font-size: 0.8em;
	padding: 0.3em 0.8em;
	border-radius: 20px;
	text-decoration: none;
	margin: 0.2em 0.3em 0.2em 0;
	transition: background 0.2s;
	border-bottom: none;
}
.ron-blog .ron-tags a:hover {
	background: var(--ron-accent);
	color: var(--ron-white);
}

/* --- SNS links, Page Navi within ron-blog --- */
.ron-blog .section__sns_links {
	background: var(--ron-bg);
	padding: 0.6em 1em;
	margin: 0 -0.5em;
	border-bottom: 1px solid var(--ron-border);
}
.ron-blog .section__pagenavi {
	padding: 0.8em 1em;
	margin: 0 -0.5em;
	font-size: 0.85em;
}
.ron-blog .section__pagenavi a {
	color: var(--ron-accent);
	text-decoration: none;
}

/* --- Smooth scroll for TOC anchors --- */
.ron-blog.ron-single {
	scroll-behavior: smooth;
}

/* --- Responsive --- */
@media screen and (max-width: 768px) {
	.ron-blog .ron-blog-header,
	.ron-blog.ron-single .ron-article-header {
		padding: 1.5em 1em 1.2em;
		margin: -1em -0.5em 0;
		border-radius: 0 0 8px 8px;
	}
	.ron-blog .ron-blog-header .ron-blog-title,
	.ron-blog.ron-single .ron-article-header h1 {
		font-size: 1.3em;
	}
	.ron-blog .ron-post-card .ron-card-image {
		padding-bottom: 52.5%;
	}
	.page.ron-blog.ron-single .ron-article-body {
		padding: 1.5em 1em;
	}
	.page.ron-blog.ron-single .ron-article-body h2 {
		font-size: 1.2em;
	}
	.page.ron-blog.ron-single .ron-article-body h3 {
		font-size: 1.05em;
	}
	.page.ron-blog .ron-author-box {
		flex-direction: column;
		align-items: center;
		text-align: center;
		padding: 1.5em 1.2em;
	}
	.page.ron-blog .ron-author-box .ron-author-visual {
		flex: none;
	}
	.ron-blog .ron-post-nav {
		flex-direction: column;
		gap: 0.8em;
		text-align: center;
	}
	.page.ron-blog.ron-single .ron-article-body figure,
	.page.ron-blog.ron-single .ron-article-body .ron-figure {
		margin: 1.5em -1em;
	}
	.page.ron-blog.ron-single .ron-article-body figure img,
	.page.ron-blog.ron-single .ron-article-body .ron-figure img {
		border-radius: 0;
	}
}