/* =========================================================================
   SINGLE ARTICLE · section-specific styles.
   ========================================================================= */

/* ── ARTICLE HEADER ── */
.article-header {
	padding: 80px 0 40px;
}
@media (min-width: 768px) { .article-header { padding: 96px 0 48px; } }
@media (min-width: 1024px) { .article-header { padding: 120px 0 56px; } }

.article-header__inner {
	max-width: 760px;
	margin: 0 auto;
}
.article-header__back {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--ink-300);
	text-decoration: none;
	margin-bottom: 32px;
	transition: color var(--t1);
}
.article-header__back:hover { color: var(--fire-500); }
.article-header__back svg { width: 14px; height: 14px; }

.article-header__meta {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 20px;
	flex-wrap: wrap;
}
.article-header__cat {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--fire-600);
	background: var(--fire-50);
	padding: 4px 12px;
	border-radius: var(--r-pill);
	font-weight: 500;
}
.article-header__date {
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.06em;
	color: var(--ink-300);
}
.article-header__read-time {
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.06em;
	color: var(--ink-300);
}
.article-header__dot {
	width: 3px;
	height: 3px;
	border-radius: 50%;
	background: var(--ink-200);
}

.article-header__title {
	font-size: clamp(32px, 5vw, 48px);
	line-height: 1.1;
	letter-spacing: -0.025em;
	font-weight: 700;
	margin: 0 0 20px;
	text-wrap: balance;
}
.article-header__excerpt {
	font-size: var(--fs-lede);
	line-height: 1.55;
	color: var(--ink-400);
	margin: 0;
}


/* ── FEATURED IMAGE ── */
.article-hero-img {
	padding: 0 0 48px;
}
.article-hero-img__frame {
	max-width: 960px;
	margin: 0 auto;
	border-radius: var(--r-4);
	overflow: hidden;
	aspect-ratio: 16 / 9;
	background: linear-gradient(135deg, var(--fire-400), var(--sunset));
	position: relative;
}
.article-hero-img__frame::after {
	content: ""; position: absolute; inset: 25% 10% 0;
	border: 2px solid rgba(255,255,255,0.6);
	border-radius: var(--r-2) var(--r-2) 0 0;
}


/* ── ARTICLE BODY ── */
.article-body {
	padding-bottom: 64px;
}
@media (min-width: 768px) { .article-body { padding-bottom: 96px; } }

.article-body__inner {
	max-width: 680px;
	margin: 0 auto;
}

.article-body__inner h2 {
	font-size: var(--fs-h3);
	line-height: 1.2;
	letter-spacing: -0.012em;
	font-weight: 700;
	margin: 48px 0 16px;
	color: var(--ink-900);
}
.article-body__inner h2:first-child { margin-top: 0; }

.article-body__inner p {
	font-size: 16.5px;
	line-height: 1.75;
	color: var(--ink-400);
	margin: 0 0 20px;
}
.article-body__inner p:last-child { margin-bottom: 0; }

.article-body__inner strong {
	color: var(--ink-900);
	font-weight: 600;
}

.article-body__inner blockquote {
	margin: 32px 0;
	padding: 0 0 0 24px;
	border-left: 3px solid var(--fire-500);
}
.article-body__inner blockquote p {
	font-size: clamp(17px, 2.2vw, 20px);
	font-weight: 600;
	color: var(--ink-900);
	line-height: 1.45;
}

.article-body__inner ul, .article-body__inner ol {
	margin: 0 0 20px;
	padding-left: 24px;
	color: var(--ink-400);
}
.article-body__inner li {
	font-size: 16.5px;
	line-height: 1.75;
	margin-bottom: 8px;
}

/* Inline code */
.article-body__inner code {
	font-family: var(--mono);
	font-size: 0.88em;
	background: var(--paper-2);
	padding: 2px 6px;
	border-radius: 4px;
}

/* Pull stat */
.article-stat {
	text-align: center;
	padding: 40px 0;
	margin: 32px 0;
	border-top: 1px solid var(--mist);
	border-bottom: 1px solid var(--mist);
}
.article-stat__num {
	font-family: var(--font-display);
	font-style: italic;
	font-size: clamp(48px, 8vw, 72px);
	color: var(--fire-500);
	line-height: 1;
	margin-bottom: 8px;
}
.article-stat__label {
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--ink-300);
}


/* ── AUTHOR ── */
.article-author {
	padding: 40px 0 64px;
	border-top: 1px solid var(--mist);
}
.article-author__inner {
	max-width: 680px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	gap: 20px;
}
.article-author__avatar {
	width: 48px;
	height: 48px;
	border-radius: 50%;
	background: var(--fire-50);
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: var(--font-display);
	font-style: italic;
	font-size: 20px;
	color: var(--fire-600);
	flex-shrink: 0;
}
.article-author__name {
	font-weight: 700;
	font-size: 15px;
	color: var(--ink-900);
	margin: 0 0 2px;
}
.article-author__role {
	font-size: 13px;
	color: var(--ink-300);
}


/* ── RELATED ARTICLES ── */
.article-related {
	background: var(--paper-2);
	padding: 64px 0;
}
@media (min-width: 768px) { .article-related { padding: 80px 0; } }

.article-related__header {
	margin-bottom: 32px;
}
.article-related__title {
	font-size: var(--fs-h3);
	font-weight: 700;
	margin: 0;
}

.article-related__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 24px;
}
@media (min-width: 640px) { .article-related__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .article-related__grid { grid-template-columns: 1fr 1fr 1fr; } }

/* Reuse card styles from listing page */
.related-card {
	background: var(--paper-0);
	border: 1px solid var(--mist);
	border-radius: var(--r-3);
	overflow: hidden;
	transition: transform var(--t2), box-shadow var(--t2), border-color var(--t2);
	display: flex;
	flex-direction: column;
	text-decoration: none;
	color: inherit;
}
.related-card:hover {
	transform: translateY(-3px);
	border-color: var(--fire-200);
	box-shadow: var(--sh-2);
}
.related-card__image {
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--paper-3);
}
.related-card__body { padding: 20px; }
.related-card__cat {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--fire-600);
	margin-bottom: 8px;
}
.related-card__title {
	font-size: 16px;
	font-weight: 700;
	line-height: 1.3;
	color: var(--ink-900);
	margin: 0;
}

/* Cover styles (from Signal design system) */
.cover { aspect-ratio: 16/10; position: relative; overflow: hidden; }
.cover .num {
	position: absolute; left: 14px; bottom: 10px;
	font-family: var(--mono); font-size: 10px; font-weight: 600;
	background: var(--paper-0); color: var(--ink-900);
	padding: 4px 8px; border-radius: 4px; letter-spacing: 0.08em; z-index: 2;
}
.cover-2 { background: var(--paper-3); background-image: radial-gradient(circle at 1px 1px, var(--ink-300) 1px, transparent 0); background-size: 14px 14px; position: relative; }
.cover-2::before { content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 50%; aspect-ratio: 1; background: var(--volt-500); border-radius: 50%; box-shadow: 0 8px 32px rgba(11,179,149,0.4); }
.cover-3 { background: var(--ink-900); position: relative; display: grid; place-items: center; }
.cover-3::before { content: ""; width: 60%; aspect-ratio: 1; border-radius: 50%; background: linear-gradient(180deg, var(--fire-300), var(--fire-600)); }
.cover-3::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, var(--ink-900)); pointer-events: none; }
.cover-4 { background: var(--fire-100); background-image: repeating-linear-gradient(45deg, transparent 0 18px, var(--fire-200) 18px 19px); }


/* ── FOOTER ── */
.article-footer {
	background: var(--ink-900);
	color: var(--ink-200);
	padding: 40px 0;
}
.article-footer__inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}
.article-footer__brand img { height: 24px; width: auto; }
.article-footer__copy { font-size: 12px; color: var(--ink-300); }


/* ── Animation ── */
.js-reveal { opacity: 0; transform: translateY(40px); }
@media (prefers-reduced-motion: reduce) {
	.js-reveal { opacity: 1 !important; transform: none !important; }
}