/**
 * RUO COA System — front-end styles.
 * Neutral tokens; override in the child theme to brand.
 */

:root {
	--ruo-ink: #10161c;
	--ruo-ink-soft: #4a5560;
	--ruo-line: #dfe4e9;
	--ruo-surface: #ffffff;
	--ruo-surface-alt: #f5f7f9;
	--ruo-accent: #12506b;
	--ruo-ok: #1c6b46;
	--ruo-warn: #8a5a00;
	--ruo-retired: #6a7480;
	--ruo-radius: 6px;
	--ruo-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
}

.ruo-certificate,
.ruo-library-page {
	max-width: 68rem;
	margin: 0 auto;
	padding: 2rem 1.25rem 4rem;
	color: var(--ruo-ink);
}

/* ---------- Breadcrumb ---------- */

.ruo-breadcrumb {
	font-size: 0.8125rem;
	color: var(--ruo-ink-soft);
	margin-bottom: 1.5rem;
}

.ruo-breadcrumb a {
	color: inherit;
	text-decoration: none;
}

.ruo-breadcrumb a:hover {
	text-decoration: underline;
}

.ruo-breadcrumb span {
	margin: 0 0.4rem;
}

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

.ruo-certificate__eyebrow {
	text-transform: uppercase;
	letter-spacing: 0.09em;
	font-size: 0.6875rem;
	font-weight: 600;
	color: var(--ruo-accent);
	margin: 0 0 0.5rem;
}

.ruo-certificate__title {
	font-size: clamp(1.6rem, 3.5vw, 2.25rem);
	line-height: 1.15;
	margin: 0 0 0.75rem;
	font-weight: 650;
}

.ruo-certificate__ref {
	display: flex;
	flex-wrap: wrap;
	gap: 1.25rem;
	font-size: 0.875rem;
	color: var(--ruo-ink-soft);
	margin: 0 0 2rem;
	padding-bottom: 1.5rem;
	border-bottom: 1px solid var(--ruo-line);
}

.ruo-certificate__ref code {
	font-family: var(--ruo-mono);
	background: var(--ruo-surface-alt);
	padding: 0.1rem 0.4rem;
	border-radius: 3px;
	font-size: 0.9em;
}

.ruo-certificate__status {
	font-weight: 600;
}

.ruo-certificate__status.is-current {
	color: var(--ruo-ok);
}

.ruo-certificate__status.is-retired {
	color: var(--ruo-retired);
}

/* ---------- Headline metrics ---------- */

.ruo-certificate__headline {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
	gap: 1px;
	background: var(--ruo-line);
	border: 1px solid var(--ruo-line);
	border-radius: var(--ruo-radius);
	overflow: hidden;
	margin-bottom: 2.5rem;
}

.ruo-metric {
	background: var(--ruo-surface);
	padding: 1.5rem 1.25rem;
	text-align: center;
}

.ruo-metric__value {
	display: block;
	font-size: 2.25rem;
	font-weight: 650;
	line-height: 1;
	letter-spacing: -0.02em;
	font-variant-numeric: tabular-nums;
}

.ruo-metric__value--text {
	font-size: 1.5rem;
	padding: 0.375rem 0;
}

.ruo-metric__label {
	display: block;
	margin-top: 0.5rem;
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ruo-ink-soft);
}

/* ---------- Tables ---------- */

.ruo-certificate__table,
.ruo-specs__table,
.ruo-coa-history__table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.9375rem;
}

.ruo-certificate__table th,
.ruo-specs__table th {
	text-align: left;
	font-weight: 600;
	color: var(--ruo-ink-soft);
	width: 42%;
	padding: 0.7rem 1rem 0.7rem 0;
	vertical-align: top;
	border-bottom: 1px solid var(--ruo-line);
}

.ruo-certificate__table td,
.ruo-specs__table td {
	padding: 0.7rem 0;
	border-bottom: 1px solid var(--ruo-line);
	font-variant-numeric: tabular-nums;
}

.ruo-certificate__detail h2,
.ruo-certificate__figures h2,
.ruo-certificate__notes h2,
.ruo-certificate__siblings h2,
.ruo-coa-history h2 {
	font-size: 1.0625rem;
	text-transform: uppercase;
	letter-spacing: 0.07em;
	color: var(--ruo-ink-soft);
	margin: 2.5rem 0 1rem;
	font-weight: 600;
}

/* ---------- Figures ---------- */

.ruo-figure {
	margin: 0 0 2rem;
	border: 1px solid var(--ruo-line);
	border-radius: var(--ruo-radius);
	overflow: hidden;
	background: var(--ruo-surface);
}

.ruo-figure img {
	display: block;
	width: 100%;
	height: auto;
}

.ruo-figure figcaption {
	padding: 0.75rem 1rem;
	font-size: 0.8125rem;
	color: var(--ruo-ink-soft);
	background: var(--ruo-surface-alt);
	border-top: 1px solid var(--ruo-line);
}

/* ---------- Actions ---------- */

.ruo-certificate__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin: 2.5rem 0;
	padding-top: 2rem;
	border-top: 1px solid var(--ruo-line);
}

.ruo-certificate__actions .button {
	background: var(--ruo-accent);
	color: #fff;
	border: 1px solid var(--ruo-accent);
	padding: 0.7rem 1.25rem;
	border-radius: var(--ruo-radius);
	text-decoration: none;
	font-size: 0.875rem;
	font-weight: 600;
	cursor: pointer;
	display: inline-block;
}

.ruo-certificate__actions .button--ghost {
	background: transparent;
	color: var(--ruo-accent);
}

/* ---------- Siblings ---------- */

.ruo-certificate__siblings ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
	gap: 0.5rem;
}

.ruo-certificate__siblings a {
	display: block;
	padding: 0.6rem 0.8rem;
	border: 1px solid var(--ruo-line);
	border-radius: var(--ruo-radius);
	text-decoration: none;
	color: var(--ruo-ink);
	font-size: 0.8125rem;
}

.ruo-certificate__siblings a:hover {
	border-color: var(--ruo-accent);
}

.ruo-certificate__siblings code {
	font-family: var(--ruo-mono);
}

/* ---------- Disclaimer ---------- */

.ruo-disclaimer {
	margin: 2.5rem 0 0;
	padding: 1.25rem;
	background: var(--ruo-surface-alt);
	border-left: 3px solid var(--ruo-ink-soft);
	border-radius: 0 var(--ruo-radius) var(--ruo-radius) 0;
}

.ruo-disclaimer p {
	margin: 0;
	font-size: 0.8125rem;
	line-height: 1.6;
	color: var(--ruo-ink-soft);
}

/* ---------- Library ---------- */

.ruo-library__filters {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
	gap: 1rem;
	padding: 1.25rem;
	background: var(--ruo-surface-alt);
	border: 1px solid var(--ruo-line);
	border-radius: var(--ruo-radius);
	margin-bottom: 1.5rem;
	align-items: end;
}

.ruo-filter label {
	display: block;
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--ruo-ink-soft);
	margin-bottom: 0.35rem;
}

.ruo-filter input,
.ruo-filter select {
	width: 100%;
	padding: 0.5rem 0.6rem;
	border: 1px solid var(--ruo-line);
	border-radius: 4px;
	font-size: 0.875rem;
	background: var(--ruo-surface);
	color: var(--ruo-ink);
}

.ruo-filter--dates {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.5rem;
	align-items: end;
}

.ruo-filter--actions {
	display: flex;
	gap: 0.75rem;
	align-items: center;
}

.ruo-filter--actions .button {
	background: var(--ruo-accent);
	color: #fff;
	border: 0;
	padding: 0.55rem 1.1rem;
	border-radius: 4px;
	font-size: 0.875rem;
	font-weight: 600;
	cursor: pointer;
}

.ruo-filter__reset {
	font-size: 0.8125rem;
	color: var(--ruo-ink-soft);
}

.ruo-library__count {
	font-size: 0.875rem;
	color: var(--ruo-ink-soft);
	margin: 0 0 1rem;
}

.ruo-library__grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
	gap: 1rem;
}

.ruo-coa-card {
	border: 1px solid var(--ruo-line);
	border-radius: var(--ruo-radius);
	padding: 1.1rem;
	background: var(--ruo-surface);
	display: flex;
	flex-direction: column;
}

.ruo-coa-card.is-retired {
	background: var(--ruo-surface-alt);
}

.ruo-coa-card__header {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 0.5rem;
	margin-bottom: 0.9rem;
	padding-bottom: 0.7rem;
	border-bottom: 1px solid var(--ruo-line);
}

.ruo-coa-card__title {
	font-size: 0.9375rem;
	margin: 0;
	font-weight: 650;
	line-height: 1.3;
}

.ruo-coa-card__title a {
	color: var(--ruo-ink);
	text-decoration: none;
}

.ruo-coa-card__title a:hover {
	color: var(--ruo-accent);
}

.ruo-coa-card__number {
	font-size: 0.75rem;
	color: var(--ruo-ink-soft);
	font-variant-numeric: tabular-nums;
	white-space: nowrap;
}

.ruo-coa-card__data {
	margin: 0;
	display: grid;
	gap: 0.4rem;
	font-size: 0.8125rem;
}

.ruo-coa-card__data > div {
	display: flex;
	justify-content: space-between;
	gap: 1rem;
}

.ruo-coa-card__data dt {
	color: var(--ruo-ink-soft);
}

.ruo-coa-card__data dd {
	margin: 0;
	font-variant-numeric: tabular-nums;
	text-align: right;
}

.ruo-coa-card__data code {
	font-family: var(--ruo-mono);
	font-size: 0.9em;
}

.ruo-coa-card__purity {
	font-weight: 650;
}

.ruo-coa-card__flag {
	margin: 0.9rem 0 0;
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ruo-retired);
	font-weight: 600;
}

.ruo-library__pagination {
	margin-top: 2rem;
	display: flex;
	justify-content: center;
	gap: 0.35rem;
}

.ruo-library__pagination .page-numbers {
	padding: 0.45rem 0.75rem;
	border: 1px solid var(--ruo-line);
	border-radius: 4px;
	text-decoration: none;
	font-size: 0.875rem;
	color: var(--ruo-ink);
}

.ruo-library__pagination .page-numbers.current {
	background: var(--ruo-accent);
	border-color: var(--ruo-accent);
	color: #fff;
}

/* ---------- Verify ---------- */

.ruo-verify__row {
	display: flex;
	gap: 0.5rem;
	max-width: 32rem;
}

.ruo-verify__row input {
	flex: 1;
	padding: 0.65rem 0.8rem;
	border: 1px solid var(--ruo-line);
	border-radius: 4px;
	font-family: var(--ruo-mono);
	font-size: 0.9375rem;
}

.ruo-verify__row .button {
	background: var(--ruo-accent);
	color: #fff;
	border: 0;
	padding: 0.65rem 1.4rem;
	border-radius: 4px;
	font-weight: 600;
	cursor: pointer;
}

.ruo-verify__hint {
	font-size: 0.8125rem;
	color: var(--ruo-ink-soft);
	margin-top: 0.5rem;
}

.ruo-verify__result {
	margin-top: 1.5rem;
	padding: 1.25rem;
	border-radius: var(--ruo-radius);
	border: 1px solid var(--ruo-line);
}

.ruo-verify__result--hit {
	border-left: 3px solid var(--ruo-ok);
}

.ruo-verify__result--miss {
	border-left: 3px solid var(--ruo-warn);
	background: var(--ruo-surface-alt);
}

.ruo-verify__status {
	text-transform: uppercase;
	letter-spacing: 0.07em;
	font-size: 0.6875rem;
	font-weight: 700;
	color: var(--ruo-ok);
	margin: 0 0 0.5rem;
}

.ruo-verify__result dl {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
	gap: 0.9rem;
	margin: 1rem 0;
}

.ruo-verify__result dt {
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--ruo-ink-soft);
}

.ruo-verify__result dd {
	margin: 0.2rem 0 0;
	font-size: 0.9375rem;
	font-variant-numeric: tabular-nums;
}

/* ---------- Product page modules ---------- */

.ruo-purity-badge {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 0.6rem;
	padding: 0.7rem 0.9rem;
	background: var(--ruo-surface-alt);
	border-left: 3px solid var(--ruo-ok);
	border-radius: 0 4px 4px 0;
	margin: 0 0 1.25rem;
	font-size: 0.875rem;
}

.ruo-purity-badge--none {
	border-left-color: var(--ruo-warn);
	color: var(--ruo-warn);
}

.ruo-purity-badge__value {
	font-size: 1.375rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.ruo-purity-badge__meta {
	color: var(--ruo-ink-soft);
}

.ruo-purity-badge__link {
	margin-left: auto;
	font-weight: 600;
	white-space: nowrap;
}

.ruo-table-wrap {
	overflow-x: auto;
}

.ruo-coa-history__table th {
	text-align: left;
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ruo-ink-soft);
	padding: 0.6rem 0.9rem 0.6rem 0;
	border-bottom: 2px solid var(--ruo-line);
	white-space: nowrap;
}

.ruo-coa-history__table td {
	padding: 0.7rem 0.9rem 0.7rem 0;
	border-bottom: 1px solid var(--ruo-line);
	font-variant-numeric: tabular-nums;
	white-space: nowrap;
}

.ruo-coa-history__table tr.is-retired td {
	color: var(--ruo-retired);
}

.ruo-coa-history__table code {
	font-family: var(--ruo-mono);
	font-size: 0.875em;
}

.ruo-coa-history__intro {
	font-size: 0.875rem;
	color: var(--ruo-ink-soft);
	margin: -0.5rem 0 1rem;
}

.ruo-structure {
	float: right;
	max-width: 15rem;
	margin: 0 0 1rem 1.5rem;
	text-align: center;
}

.ruo-structure img {
	max-width: 100%;
	height: auto;
}

.ruo-structure figcaption {
	font-size: 0.6875rem;
	color: var(--ruo-ink-soft);
	margin-top: 0.4rem;
}

.ruo-sequence {
	font-family: var(--ruo-mono);
	font-size: 0.8125rem;
	word-break: break-all;
	line-height: 1.6;
}

.ruo-handling__notice {
	font-size: 0.8125rem;
	color: var(--ruo-ink-soft);
	padding: 1rem;
	background: var(--ruo-surface-alt);
	border-radius: var(--ruo-radius);
	line-height: 1.6;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
	.ruo-coa-history__table thead {
		display: none;
	}

	.ruo-coa-history__table,
	.ruo-coa-history__table tbody,
	.ruo-coa-history__table tr,
	.ruo-coa-history__table td {
		display: block;
		width: 100%;
	}

	.ruo-coa-history__table tr {
		border: 1px solid var(--ruo-line);
		border-radius: var(--ruo-radius);
		padding: 0.6rem;
		margin-bottom: 0.75rem;
	}

	.ruo-coa-history__table td {
		border: 0;
		display: flex;
		justify-content: space-between;
		padding: 0.3rem 0;
	}

	.ruo-coa-history__table td::before {
		content: attr(data-label);
		font-size: 0.6875rem;
		text-transform: uppercase;
		letter-spacing: 0.05em;
		color: var(--ruo-ink-soft);
	}

	.ruo-structure {
		float: none;
		margin: 0 auto 1.5rem;
	}
}

/* ---------- Print ---------- */

@media print {
	.ruo-breadcrumb,
	.ruo-certificate__actions,
	.ruo-certificate__siblings,
	header.site-header,
	footer.site-footer {
		display: none !important;
	}

	.ruo-certificate {
		max-width: none;
		padding: 0;
	}

	.ruo-figure {
		break-inside: avoid;
	}
}