/* ---------------------------------------------------------------------------
   Blog presentation. Deliberately independent of the fractal engine: markdown
   in _posts/ is pure content, this file is the only thing that styles it, and
   post pages render fine with index.html's fractal removed entirely.
   --------------------------------------------------------------------------- */

body#blog {
	background-color: #eaf7ef;
	/* The fixed header is `position: fixed` with a wrapping nav, so its height
	   changes with viewport width (160px wide, 229px once the nav wraps) and a
	   single constant cannot clear it — the wavy clip-path edge ends up painted
	   over the content.

	   The literals below are the measured heights for each regime, so the page
	   is correct with no JS at all. assets/header-offset.js then publishes the
	   live measurement as --header-offset. max() means that value can only ever
	   *raise* the padding: a stale or missing measurement can never pull the
	   content back under the header. */
	padding-top: max(var(--header-offset, 0px), 160px);
}

@media (max-width: 768px) {
	body#blog {
		padding-top: max(var(--header-offset, 0px), 229px);
	}
}

/* Below ~368px the nav wraps onto a further row and the header grows again. */
@media (max-width: 368px) {
	body#blog {
		padding-top: max(var(--header-offset, 0px), 272px);
	}
}

body#blog .flower-mask {
	background-color: #c9ecd8;
}

.site-title-link,
.site-title-link:hover {
	color: inherit;
	text-decoration: none;
}

.blog-main {
	max-width: 46rem;
	margin: 0 auto;
	padding: 2.5rem 0 5rem;
}

/* ---------- index ---------- */

.blog-intro {
	margin-bottom: 2.5rem;
}

.blog-intro h1 {
	font-size: clamp(2rem, 5vw, 3rem);
	margin: 0 0 0.4rem;
	color: #223;
}

.blog-intro p {
	margin: 0;
	color: #4a5a52;
	font-size: 1.02rem;
}

.topic-group {
	margin-bottom: 2.25rem;
	scroll-margin-top: 120px;
}

.topic-heading {
	font-size: 0.78rem;
	text-transform: uppercase;
	letter-spacing: 0.14em;
	font-weight: 700;
	color: #5c7a6b;
	margin: 0 0 0.75rem;
	padding-bottom: 0.4rem;
	border-bottom: 1px solid rgba(60, 90, 75, 0.18);
}

.topic-heading .depth-sep {
	opacity: 0.45;
	margin: 0 0.35rem;
}

.post-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 0.85rem;
}

.post-card {
	display: block;
	padding: 1rem 1.15rem;
	background: rgba(255, 255, 255, 0.86);
	border: 1px solid rgba(60, 90, 75, 0.16);
	border-radius: 14px;
	transition: transform 0.15s, box-shadow 0.15s;
	color: inherit;
}

.post-card:hover {
	transform: translateY(-2px);
	box-shadow: 0 10px 26px rgba(30, 60, 45, 0.13);
	color: inherit;
}

.post-card h2 {
	margin: 0 0 0.3rem;
	font-size: 1.18rem;
	color: #1d3a2c;
	line-height: 1.25;
}

.post-card p {
	margin: 0 0 0.5rem;
	font-size: 0.94rem;
	line-height: 1.55;
	color: #43554b;
}

.post-card .post-meta {
	margin: 0;
}

.post-meta {
	font-size: 0.82rem;
	color: #6a7f74;
	letter-spacing: 0.02em;
}

.post-meta .sep {
	margin: 0 0.45rem;
	opacity: 0.5;
}

/* ---------- single post ---------- */

.post-breadcrumb {
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	font-weight: 600;
	margin-bottom: 1.1rem;
	color: #5c7a6b;
}

.post-breadcrumb .sep {
	margin: 0 0.4rem;
	opacity: 0.5;
}

.post-title {
	font-size: clamp(1.9rem, 4.6vw, 2.9rem);
	line-height: 1.12;
	margin: 0 0 0.6rem;
	color: #1d3a2c;
	letter-spacing: -0.015em;
}

.post .post-meta {
	margin: 0 0 2rem;
}

.post-hero {
	width: 100%;
	border-radius: 16px;
	margin-bottom: 2rem;
	display: block;
}

.post-body {
	font-size: 1.06rem;
	line-height: 1.72;
	color: #26332c;
}

.post-body > * + * {
	margin-top: 1.15rem;
}

.post-body h2 {
	font-size: 1.5rem;
	margin-top: 2.4rem;
	color: #1d3a2c;
	line-height: 1.25;
}

.post-body h3 {
	font-size: 1.2rem;
	margin-top: 1.9rem;
	color: #1d3a2c;
}

.post-body img {
	max-width: 100%;
	height: auto;
	border-radius: 12px;
	display: block;
	margin: 1.6rem auto;
}

.post-body figure {
	margin: 1.8rem 0;
}

.post-body figcaption {
	font-size: 0.86rem;
	color: #6a7f74;
	text-align: center;
	margin-top: 0.5rem;
}

.post-body blockquote {
	margin: 1.6rem 0;
	padding: 0.4rem 0 0.4rem 1.1rem;
	border-left: 3px solid rgba(60, 130, 100, 0.4);
	color: #43554b;
	font-style: italic;
}

.post-body code {
	background: rgba(60, 90, 75, 0.1);
	padding: 0.12em 0.38em;
	border-radius: 5px;
	font-size: 0.9em;
}

.post-body pre {
	background: #1d2a23;
	color: #e8f2ec;
	padding: 1rem 1.15rem;
	border-radius: 12px;
	overflow-x: auto;
	font-size: 0.88rem;
	line-height: 1.55;
}

.post-body pre code {
	background: none;
	padding: 0;
	color: inherit;
}

.post-body ul,
.post-body ol {
	padding-left: 1.4rem;
}

.post-body li + li {
	margin-top: 0.35rem;
}

.post-body hr {
	border: 0;
	border-top: 1px solid rgba(60, 90, 75, 0.2);
	margin: 2.5rem 0;
}

.post-body table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.94rem;
}

.post-body th,
.post-body td {
	border: 1px solid rgba(60, 90, 75, 0.2);
	padding: 0.5rem 0.7rem;
	text-align: left;
}

/* ---------- post-to-post nav ---------- */

.post-nav {
	display: flex;
	gap: 1rem;
	margin-top: 3.5rem;
	flex-wrap: wrap;
}

.post-nav-link {
	flex: 1 1 12rem;
	padding: 0.85rem 1rem;
	border: 1px solid rgba(60, 90, 75, 0.16);
	border-radius: 12px;
	background: rgba(255, 255, 255, 0.72);
	color: inherit;
}

.post-nav-link:hover {
	background: rgba(255, 255, 255, 0.95);
	color: inherit;
}

.post-nav-link.next {
	text-align: right;
}

.post-nav-label {
	display: block;
	font-size: 0.7rem;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	color: #6a7f74;
	margin-bottom: 0.2rem;
}

.post-nav-title {
	display: block;
	font-weight: 600;
	color: #1d3a2c;
	line-height: 1.3;
}

/* ---------- popup footnotes ----------
   Markdown keeps standard [^1] syntax; kramdown emits a normal endnote list at
   the bottom. footnotes.js lifts those into click-to-open popups anchored at the
   reference. Without JS the plain list at the bottom still works, so the content
   degrades gracefully. */

.fn-ref {
	font-size: 0.72em;
	line-height: 0;
	vertical-align: super;
}

.fn-ref a,
a.footnote {
	display: inline-block;
	min-width: 1.15em;
	padding: 0 0.28em;
	border-radius: 5px;
	background: rgba(60, 130, 100, 0.16);
	color: #0d6b52;
	font-weight: 700;
	text-align: center;
	text-decoration: none;
	transition: background 0.15s, color 0.15s;
}

.fn-ref a:hover,
a.footnote:hover,
a.footnote[aria-expanded="true"] {
	background: #0d6b52;
	color: #fff;
}

/* Only hidden once JS has successfully lifted the notes into popups. */
body.fn-popups-ready .footnotes {
	display: none;
}

.fn-popup {
	position: absolute;
	z-index: 1000;
	max-width: min(22rem, calc(100vw - 2rem));
	padding: 0.8rem 0.95rem;
	background: #fffdf9;
	border: 1px solid rgba(60, 90, 75, 0.22);
	border-radius: 12px;
	box-shadow: 0 14px 38px rgba(25, 50, 38, 0.22);
	font-size: 0.92rem;
	line-height: 1.6;
	color: #26332c;
	opacity: 0;
	visibility: hidden;
	transform: translateY(4px);
	transition: opacity 0.14s ease, transform 0.14s ease, visibility 0.14s;
}

.fn-popup.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.fn-popup > *:first-child { margin-top: 0; }
.fn-popup > *:last-child { margin-bottom: 0; }

.fn-popup p { margin: 0 0 0.6rem; }
.fn-popup p:last-child { margin-bottom: 0; }

.fn-popup img {
	max-width: 100%;
	border-radius: 8px;
	margin: 0.5rem 0 0;
	display: block;
}

.fn-popup-arrow {
	position: absolute;
	width: 10px;
	height: 10px;
	background: #fffdf9;
	border-left: 1px solid rgba(60, 90, 75, 0.22);
	border-top: 1px solid rgba(60, 90, 75, 0.22);
	transform: rotate(45deg);
}

.fn-popup.below .fn-popup-arrow { top: -6px; }
.fn-popup.above .fn-popup-arrow { bottom: -6px; transform: rotate(225deg); }

.fn-popup-close {
	position: absolute;
	top: 0.3rem;
	right: 0.4rem;
	border: 0;
	background: none;
	font-size: 1.05rem;
	line-height: 1;
	color: #6a7f74;
	cursor: pointer;
	padding: 0.2rem 0.3rem;
	border-radius: 5px;
}

.fn-popup-close:hover {
	background: rgba(60, 90, 75, 0.1);
	color: #1d3a2c;
}

@media (max-width: 768px) {
	.blog-main { padding: 1.5rem 0 4rem; }
	.post-body { font-size: 1.01rem; }
}