/* Spec page styles. The spec body is rendered markdown, so these rules are
   global within the /spec route and target .spec-document content. */

/* The spec page supplies its own shell padding, so the global body gutter is
   removed while this stylesheet is loaded. */
body:has(.site-shell) {
	padding: 0;
}

.site-shell {
	position: relative;
	z-index: var(--dr-z-content);
	display: grid;
	grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
	gap: clamp(1.25rem, 3vw, 3rem);
	padding: clamp(1.25rem, 3vw, 3.5rem);
	max-width: 1600px;
	margin: 0 auto;
}

/* ── TOC toggle (mobile) ── */

.toc-toggle {
	display: none;
	position: sticky;
	top: 0;
	z-index: 3;
	width: 100%;
	border: 2px solid var(--dr-border-color);
	background: var(--dr-surface-elevated);
	color: var(--dr-text-primary);
	font-family: var(--dr-font-heading);
	font-variation-settings: 'slnt' 0;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	padding: var(--dr-space-md) var(--dr-space-lg);
	box-shadow: var(--dr-shadow-offset-md), var(--dr-shadow-inner-highlight);
	cursor: pointer;
	transition:
		transform var(--dr-transition-fast),
		box-shadow var(--dr-transition-fast);
}

.toc-toggle:hover {
	transform: translate(-2px, -2px);
	box-shadow: var(--dr-shadow-hover-md), var(--dr-shadow-glow-sm);
}

.toc-toggle:active {
	transform: translate(2px, 2px);
	box-shadow: var(--dr-shadow-active);
}

/* ── TOC panel ── */

.toc-panel {
	position: sticky;
	top: clamp(1rem, 3vw, 2rem);
	align-self: start;
	height: fit-content;
}

.toc-panel__inner {
	background: var(--dr-surface-elevated);
	border: var(--dr-border);
	border-radius: var(--dr-radius-lg);
	padding: var(--dr-space-lg);
	box-shadow: var(--dr-shadow-offset-md), var(--dr-shadow-inner-highlight);
}

.toc-eyebrow {
	font-family: var(--dr-font-heading);
	font-variation-settings: 'slnt' 0;
	font-size: var(--dr-text-xs);
	text-transform: uppercase;
	letter-spacing: 0.18em;
	color: var(--dr-text-quiet);
	margin: 0 0 var(--dr-space-xs);
}

.toc-panel__hint {
	font-size: var(--dr-text-sm);
	color: var(--dr-text-quiet);
	margin-bottom: var(--dr-space-md);
}

.toc-nav {
	font-size: var(--dr-text-sm);
	max-height: calc(100vh - 6rem);
	overflow: auto;
	padding-right: var(--dr-space-sm);
}

.toc-nav ul {
	list-style: none;
	margin: 0;
	padding-left: 0.95rem;
}

.toc-nav > ul {
	padding-left: 0;
}

.toc-nav li {
	margin: 0.2rem 0;
}

.toc-nav a {
	display: inline-flex;
	width: 100%;
	gap: var(--dr-space-sm);
	align-items: center;
	padding: 0.2rem 0.25rem;
	border-left: 2px solid transparent;
	color: var(--dr-text-secondary);
	text-decoration: none;
	transition:
		color var(--dr-transition-fast),
		border-color var(--dr-transition-fast);
}

.toc-nav a:hover {
	color: var(--dr-text-primary);
	border-color: var(--dr-surface-highlight);
}

.toc-nav a.is-active {
	color: var(--dr-text-primary);
	border-color: var(--dr-accent);
}

/* ── Main spec document ── */

.spec-main {
	min-width: 0;
}

.spec-document {
	background: var(--dr-surface-base);
	border-radius: var(--dr-radius-lg);
	padding: clamp(var(--dr-space-lg), 3vw, var(--dr-space-xl));
	border: var(--dr-border);
	box-shadow: var(--dr-shadow-offset-lg), var(--dr-shadow-inner-highlight);
}

.spec-document h1,
.spec-document h2,
.spec-document h3,
.spec-document h4,
.spec-document h5,
.spec-document h6 {
	font-family: var(--dr-font-heading);
	font-variation-settings: 'slnt' 0;
	font-weight: 700;
	letter-spacing: -0.02em;
	line-height: 1.3;
}

.spec-document h1 {
	color: var(--dr-heading);
	font-size: clamp(var(--dr-text-2xl), 5vw, var(--dr-text-3xl));
	margin-top: 0;
	margin-bottom: var(--dr-space-sm);
}

.spec-document h2 {
	color: var(--dr-heading);
	font-size: var(--dr-text-xl);
	margin-top: var(--dr-space-xl);
	margin-bottom: var(--dr-space-md);
	text-transform: uppercase;
	letter-spacing: 0.1em;
	border-left: var(--dr-border-thick);
	border-left-color: var(--dr-accent);
	padding-left: var(--dr-space-md);
}

.spec-document h3 {
	color: var(--dr-heading-sub);
	font-size: var(--dr-text-lg);
	margin-top: var(--dr-space-xl);
	margin-bottom: var(--dr-space-sm);
}

.spec-document h4 {
	color: var(--dr-heading-sub);
	font-size: var(--dr-text-lg);
	font-weight: 600;
	margin-top: var(--dr-space-lg);
	margin-bottom: var(--dr-space-sm);
}

.spec-document h5 {
	color: var(--dr-text-primary);
	font-size: var(--dr-text-lg);
	font-weight: 600;
	margin-top: var(--dr-space-lg);
	margin-bottom: var(--dr-space-sm);
}

.spec-document h6 {
	color: var(--dr-text-secondary);
	font-size: var(--dr-text-base);
	font-weight: 600;
	margin-top: var(--dr-space-md);
	margin-bottom: var(--dr-space-sm);
}

.spec-lede {
	font-size: var(--dr-text-lg);
	color: var(--dr-text-quiet);
	max-width: 60ch;
	line-height: 1.45;
}

/* ── Meta bar ── */

.spec-meta {
	display: flex;
	flex-wrap: wrap;
	gap: var(--dr-space-md);
	margin: var(--dr-space-lg) 0 var(--dr-space-xl);
	padding: var(--dr-space-md) var(--dr-space-lg);
	background: var(--dr-surface-elevated);
	border: var(--dr-border);
	box-shadow: var(--dr-shadow-offset-sm), var(--dr-shadow-inner-highlight);
}

.spec-meta__item {
	flex: 1 1 200px;
}

.spec-meta__label {
	display: block;
	font-family: var(--dr-font-heading);
	font-variation-settings: 'slnt' 0;
	font-size: var(--dr-text-xs);
	text-transform: uppercase;
	letter-spacing: 0.2em;
	color: var(--dr-text-primary);
	margin-bottom: var(--dr-space-xs);
}

.spec-meta__value {
	font-size: var(--dr-text-base);
	font-weight: 600;
}

.status-chip {
	display: inline-flex;
	align-items: center;
	gap: var(--dr-space-sm);
	padding: var(--dr-space-xs) var(--dr-space-md);
	border-radius: var(--dr-radius);
	background: var(--dr-surface-secondary);
	border: var(--dr-border-subtle);
}

.status-chip::before {
	content: '';
	width: 0.45rem;
	height: 0.45rem;
	border-radius: 50%;
	background: var(--dr-accent);
	box-shadow: 0 0 12px var(--dr-glow-accent);
}

.hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: var(--dr-space-sm);
	margin-left: auto;
	align-items: center;
}

/* ── Spec document content ── */

.spec-document table {
	width: 100%;
	border-collapse: collapse;
	font-variant-numeric: tabular-nums;
	background: var(--dr-surface-elevated);
	border: var(--dr-border);
}

.spec-document th,
.spec-document td {
	padding: var(--dr-space-sm) var(--dr-space-md);
	text-align: center;
	border-bottom: var(--dr-border-subtle);
}

.spec-document th {
	background: var(--dr-surface-elevated);
	font-family: var(--dr-font-heading);
	font-variation-settings: 'slnt' 0;
	font-weight: 700;
	font-size: var(--dr-text-xs);
	color: var(--dr-heading);
	text-transform: uppercase;
	letter-spacing: 0.2em;
	border-bottom: var(--dr-border);
}

.spec-document tbody tr:last-child td {
	border-bottom: none;
}

.spec-document tbody tr:hover {
	background: var(--dr-surface-highlight);
}

.spec-document pre {
	margin: var(--dr-space-md) 0;
	padding: var(--dr-space-lg);
	background: var(--dr-surface-secondary);
	color: var(--dr-text-primary);
	border-radius: var(--dr-radius);
	overflow: auto;
	font-family: var(--dr-font-mono);
	font-size: var(--dr-text-sm);
	line-height: 1.5;
	border: var(--dr-border);
	border-left: var(--dr-border-thick);
	border-left-color: var(--dr-border-color-warm);
	hyphens: none;
}

.spec-document code {
	font-family: var(--dr-font-mono);
}

.spec-document blockquote {
	margin: var(--dr-space-lg) 0;
	padding: var(--dr-space-sm) var(--dr-space-md);
	background: var(--core-meltdown-40);
	color: var(--dr-text-secondary);
	font-style: italic;
}

.spec-document hr {
	border: none;
	border-top: var(--dr-border);
	margin: var(--dr-space-xl) auto;
	width: 50%;
}

.spec-document ul,
.spec-document ol {
	padding-left: 1.5rem;
}

.spec-document li {
	margin: 0.35rem 0;
}

/* ── Color lab (palette card grids above the source tables) ── */

.table-scroll {
	overflow-x: auto;
	margin-top: var(--dr-space-md);
}

.color-lab {
	margin-bottom: var(--dr-space-xl);
}

.color-lab .color-grid,
.color-lab .ansi-grid {
	display: grid;
	gap: var(--dr-space-sm);
	margin: var(--dr-space-lg) 0 var(--dr-space-sm);
}

.color-lab .color-grid {
	grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.color-card {
	padding: var(--dr-space-sm);
	border: var(--dr-border);
	border-radius: var(--dr-radius);
	background: var(--dr-surface-secondary);
	display: flex;
	flex-direction: column;
	gap: var(--dr-space-sm);
	box-shadow: var(--dr-shadow-offset-sm), var(--dr-shadow-inner-highlight);
	transition:
		transform var(--dr-transition-fast),
		box-shadow var(--dr-transition-fast);
}

.color-card:hover {
	transform: translate(-2px, -2px);
	box-shadow: var(--dr-shadow-hover-md), var(--dr-shadow-glow-sm);
}

.color-card:active {
	transform: translate(2px, 2px);
	box-shadow: var(--dr-shadow-active);
}

.color-card__swatch {
	border-radius: var(--dr-radius);
	height: 80px;
	border: var(--dr-border-subtle);
}

.color-card__code {
	font-family: var(--dr-font-mono);
	font-size: var(--dr-text-xs);
	letter-spacing: 0.05em;
}

.color-card__note {
	opacity: 0.7;
	font-size: var(--dr-text-sm);
}

.color-lab .ansi-grid {
	grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.color-lab .ansi-chip {
	display: flex;
	align-items: center;
	gap: var(--dr-space-sm);
	padding: var(--dr-space-sm) var(--dr-space-md);
	background: var(--dr-surface-secondary);
	border: var(--dr-border);
	border-radius: var(--dr-radius);
	box-shadow: var(--dr-shadow-offset-sm), var(--dr-shadow-inner-highlight);
	transition:
		transform var(--dr-transition-fast),
		box-shadow var(--dr-transition-fast);
}

.color-lab .ansi-chip:hover {
	transform: translate(-2px, -2px);
	box-shadow: var(--dr-shadow-hover-md), var(--dr-shadow-glow-sm);
}

.color-lab .ansi-chip:active {
	transform: translate(2px, 2px);
	box-shadow: var(--dr-shadow-active);
}

.color-lab .ansi-chip span {
	font-size: var(--dr-text-sm);
}

.legend-chip {
	display: inline-block;
	width: 0.85rem;
	height: 0.85rem;
	border-radius: var(--dr-radius-sm);
	flex-shrink: 0;
}

.color-lab .ansi-chip .legend-chip {
	width: 1.25rem;
	height: 1.25rem;
}

/* ── Responsive ── */

@media (max-width: 1100px) {
	.site-shell {
		grid-template-columns: 1fr;
	}

	.toc-toggle {
		display: block;
	}

	.toc-panel {
		position: fixed;
		top: 0;
		bottom: 0;
		left: 0;
		width: 320px;
		max-width: 85vw;
		transform: translateX(-100%);
		transition: transform var(--dr-duration-normal) var(--dr-ease-out-expo);
		z-index: 4;
	}

	.toc-panel.is-open {
		transform: translateX(0);
	}

	.toc-panel__inner {
		height: 100%;
		border-radius: 0;
	}
}

@media (max-width: 640px) {
	.spec-meta {
		flex-direction: column;
	}

	/* Basis applies to height in column direction. Items size to content. */
	.spec-meta__item {
		flex: none;
	}

	.hero-actions {
		width: 100%;
		justify-content: flex-start;
	}

	.spec-document pre {
		font-size: var(--dr-text-xs);
	}
}

@media (prefers-reduced-motion: reduce) {
	.toc-toggle,
	.color-card,
	.ansi-chip {
		transition: none;
	}

	.toc-toggle:hover,
	.toc-toggle:active,
	.color-card:hover,
	.color-card:active,
	.ansi-chip:hover,
	.ansi-chip:active {
		transform: none;
	}
}

@media print {
	body:has(.site-shell) {
		background: white;
		color: black;
	}

	.site-shell,
	.spec-document {
		padding: 0;
		background: none;
		box-shadow: none;
		border: none;
	}

	.toc-panel,
	.toc-toggle,
	.spec-live-demo,
	.color-grid,
	.ansi-grid {
		display: none;
	}
}