/*
 * UIX Demos — modern docs aesthetic, Chakra/Radix/shadcn lineage.
 * Geist (sans + mono), neutral grays, indigo accent, sharp 6px radius,
 * three-column layout (sidebar / canvas / TOC). No serif, no editorial chrome.
 */

:root,
[data-theme='light'] {
	--font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Helvetica Neue', Arial, sans-serif;
	--font-mono: 'Geist Mono', 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

	/* Neutrals — a warm-tinted gray scale */
	--gray-0: #ffffff;
	--gray-25: #fcfcfd;
	--gray-50: #f9fafb;
	--gray-100: #f3f4f6;
	--gray-150: #ebedf0;
	--gray-200: #e5e7eb;
	--gray-300: #d1d5db;
	--gray-400: #9ca3af;
	--gray-500: #6b7280;
	--gray-600: #4b5563;
	--gray-700: #374151;
	--gray-800: #1f2937;
	--gray-900: #111827;
	--gray-950: #0a0e16;
}

[data-theme='dark'] {
	--gray-0: #0c1018;
	--gray-25: #0e131c;
	--gray-50: #131924;
	--gray-100: #1a2130;
	--gray-150: #20283a;
	--gray-200: #283044;
	--gray-300: #374055;
	--gray-400: #5d6985;
	--gray-500: #8a93a8;
	--gray-600: #aab0c0;
	--gray-700: #c5c9d4;
	--gray-800: #dadde4;
	--gray-900: #ebedf2;
	--gray-950: #f5f6f9;

	/* Accent — slightly more luminous on dark */
	--accent-50: #1e1b4b;
	--accent-100: #2e2a6b;
	--accent-200: #3f3a8b;
	--accent-500: #818cf8;
	--accent-600: #a5b4fc;
	--accent-700: #c7d2fe;
	--accent-800: #e0e7ff;

	/* Layer accent backgrounds — darker tints */
	--layer-soma: #60a5fa;
	--layer-soma-bg: #0c1c33;
	--layer-morfo: #a78bfa;
	--layer-morfo-bg: #1e1733;
	--layer-sema: #f472b6;
	--layer-sema-bg: #2c0f24;
	--layer-eidos: #34d399;
	--layer-eidos-bg: #0a2419;
	--layer-docs: #94a3b8;
	--layer-docs-bg: #182030;

	/* Shadows — slightly visible on dark */
	--shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
	--shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
}

:root,
[data-theme] {

	/* Accent — a sober indigo */
	--accent-50: #eef2ff;
	--accent-100: #e0e7ff;
	--accent-200: #c7d2fe;
	--accent-500: #6366f1;
	--accent-600: #4f46e5;
	--accent-700: #4338ca;
	--accent-800: #3730a3;

	/* Layer accents — desaturated, used for badges */
	--layer-soma: #2563eb;
	--layer-soma-bg: #eff6ff;
	--layer-morfo: #7c3aed;
	--layer-morfo-bg: #f5f3ff;
	--layer-sema: #db2777;
	--layer-sema-bg: #fdf2f8;
	--layer-eidos: #059669;
	--layer-eidos-bg: #ecfdf5;
	--layer-docs: #475569;
	--layer-docs-bg: #f1f5f9;

	/* Code surface */
	--code-bg: #0f172a;
	--code-bg-soft: #131c2e;
	--code-fg: #e2e8f0;
	--code-comment: #64748b;
	--code-keyword: #c4b5fd;
	--code-string: #86efac;
	--code-tag: #fda4af;
	--code-attr: #fcd34d;
	--code-punct: #94a3b8;

	/* Layout */
	--rail-w: 256px;
	--toc-w: 220px;
	--canvas-max: 880px;
	--radius-xs: 4px;
	--radius-sm: 6px;
	--radius-md: 8px;
	--radius-lg: 10px;
	--shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
	--shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
	--ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	padding: 0;
	min-height: 100vh;
	background: var(--gray-25);
	color: var(--gray-900);
	font-family: var(--font-sans);
	font-size: 14.5px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	font-feature-settings: 'cv11', 'ss01';
}

a {
	color: inherit;
}

/* ─────────────────────────────────────────────────────────────────────
 * Shell — three-column layout
 * ───────────────────────────────────────────────────────────────────── */

.shell {
	display: grid;
	grid-template-columns: var(--rail-w) minmax(0, 1fr);
	min-height: 100vh;
}

/* ─────────────────────────────────────────────────────────────────────
 * Rail (left)
 * ───────────────────────────────────────────────────────────────────── */

.rail {
	position: sticky;
	top: 0;
	height: 100vh;
	overflow-y: auto;
	padding: 1.25rem 0.5rem 1.5rem 1rem;
	background: var(--gray-0);
	border-right: 1px solid var(--gray-200);
	display: flex;
	flex-direction: column;
}

.brand {
	display: flex;
	align-items: center;
	gap: 0.55rem;
	padding: 0.4rem 0.6rem 1rem;
	text-decoration: none;
	color: var(--gray-900);
	margin-bottom: 0.5rem;
}
.brand-mark {
	width: 26px;
	height: 26px;
	border-radius: 6px;
	background: linear-gradient(135deg, var(--gray-900), var(--gray-700));
	color: var(--gray-0);
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 700;
	font-size: 0.85rem;
	letter-spacing: -0.02em;
	font-family: var(--font-sans);
}
.brand-name {
	font-weight: 600;
	font-size: 0.95rem;
	letter-spacing: -0.01em;
}
.brand-sub {
	font-size: 0.72rem;
	color: var(--gray-500);
	margin-left: auto;
	font-weight: 500;
}

.nav {
	display: flex;
	flex-direction: column;
	gap: 1.1rem;
	flex: 1;
}
.nav-group-head {
	font-size: 0.72rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--gray-500);
	padding: 0.3rem 0.7rem;
	margin-bottom: 0.15rem;
}
.nav ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 1px;
}
.nav a {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.4rem 0.7rem;
	color: var(--gray-700);
	text-decoration: none;
	font-size: 0.875rem;
	font-weight: 450;
	border-radius: var(--radius-sm);
	transition: background 120ms var(--ease), color 120ms var(--ease);
}
.nav a:hover {
	background: var(--gray-100);
	color: var(--gray-900);
}
.nav a.active {
	background: var(--accent-50);
	color: var(--accent-700);
	font-weight: 550;
}
.nav a.active::before {
	content: '';
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--accent-600);
	margin-right: -0.1rem;
}

.rail-foot {
	padding: 0.75rem 0.7rem 0;
	margin-top: 0.5rem;
	border-top: 1px solid var(--gray-150);
	font-size: 0.72rem;
	color: var(--gray-500);
}

/* ─────────────────────────────────────────────────────────────────────
 * Canvas (right of rail) — main content with right TOC
 * ───────────────────────────────────────────────────────────────────── */

.canvas {
	display: grid;
	grid-template-columns: minmax(0, 1fr) var(--toc-w);
	gap: 3rem;
	padding: 2.5rem 2rem 6rem 2.5rem;
	max-width: calc(var(--canvas-max) + var(--toc-w) + 5rem);
	width: 100%;
	margin: 0 auto;
}
.canvas.no-toc {
	grid-template-columns: minmax(0, 1fr);
	max-width: var(--canvas-max);
}
.canvas-content {
	min-width: 0;
}

/* ─────────────────────────────────────────────────────────────────────
 * Page header
 * ───────────────────────────────────────────────────────────────────── */

.page-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 500;
	color: var(--gray-500);
	margin-bottom: 0.6rem;
}
.page-eyebrow-dot {
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--accent-600);
}

.page-title {
	font-size: 2.1rem;
	font-weight: 600;
	line-height: 1.15;
	letter-spacing: -0.025em;
	margin: 0 0 0.5rem;
}

.page-lede {
	font-size: 1.05rem;
	color: var(--gray-600);
	line-height: 1.6;
	max-width: 60ch;
	margin: 0;
}

.page-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	margin-top: 1rem;
}
.meta-pill {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	padding: 0.2rem 0.55rem;
	border-radius: var(--radius-sm);
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 500;
	background: var(--gray-100);
	color: var(--gray-700);
	border: 1px solid var(--gray-200);
}
.meta-pill .k {
	color: var(--gray-500);
}

/* ─────────────────────────────────────────────────────────────────────
 * Tabs
 * ───────────────────────────────────────────────────────────────────── */

.tablist {
	display: flex;
	gap: 0.25rem;
	margin: 2rem 0 1.5rem;
	border-bottom: 1px solid var(--gray-200);
	flex-wrap: wrap;
	row-gap: 0;
}
.tab {
	background: none;
	border: none;
	padding: 0.55rem 0.85rem;
	font: inherit;
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--gray-600);
	cursor: pointer;
	border-bottom: 2px solid transparent;
	margin-bottom: -1px;
	transition: color 120ms var(--ease), border-color 120ms var(--ease);
	white-space: nowrap;
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
}
.tab:hover {
	color: var(--gray-900);
}
.tab.active {
	color: var(--gray-900);
	border-bottom-color: var(--gray-900);
}
.tab-count {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 500;
	color: var(--gray-500);
	background: var(--gray-100);
	padding: 0.05rem 0.35rem;
	border-radius: 9px;
	line-height: 1.4;
}
.tab.active .tab-count {
	background: var(--gray-900);
	color: var(--gray-0);
}

/* ─────────────────────────────────────────────────────────────────────
 * Sections
 * ───────────────────────────────────────────────────────────────────── */

.section {
	margin: 2.5rem 0;
	scroll-margin-top: 1.5rem;
}
.section-head {
	margin-bottom: 1rem;
}
.section-title {
	font-size: 1.25rem;
	font-weight: 600;
	letter-spacing: -0.01em;
	margin: 0 0 0.3rem;
	display: flex;
	align-items: center;
	gap: 0.6rem;
}
.section-desc {
	color: var(--gray-600);
	margin: 0;
	font-size: 0.92rem;
	line-height: 1.6;
	max-width: 60ch;
}

/* Layer badge — tiny pill with a dot */
.layer-badge {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 500;
	letter-spacing: 0.02em;
	padding: 0.15rem 0.45rem;
	border-radius: var(--radius-xs);
	border: 1px solid currentColor;
	background: transparent;
	text-transform: lowercase;
}
.layer-badge::before {
	content: '';
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background: currentColor;
}
.layer-badge.soma {
	color: var(--layer-soma);
	background: var(--layer-soma-bg);
	border-color: var(--layer-soma-bg);
}
.layer-badge.morfo {
	color: var(--layer-morfo);
	background: var(--layer-morfo-bg);
	border-color: var(--layer-morfo-bg);
}
.layer-badge.sema {
	color: var(--layer-sema);
	background: var(--layer-sema-bg);
	border-color: var(--layer-sema-bg);
}
.layer-badge.eidos {
	color: var(--layer-eidos);
	background: var(--layer-eidos-bg);
	border-color: var(--layer-eidos-bg);
}
.layer-badge.docs {
	color: var(--layer-docs);
	background: var(--layer-docs-bg);
	border-color: var(--layer-docs-bg);
}

/* ─────────────────────────────────────────────────────────────────────
 * Live preview card
 * ───────────────────────────────────────────────────────────────────── */

.preview,
.canvas-stage {
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	background: var(--gray-0);
	overflow: hidden;
	box-shadow: var(--shadow-sm);
}
/* Always-rendered live preview, sits above the tablist so the Sema
 * tab's Play buttons can fire on the live toggle no matter which tab
 * the user is on. */
.canvas-stage {
	margin: 1rem 0 0;
}
.preview-stage {
	padding: 2rem 1.5rem;
	display: flex;
	gap: 1rem;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	min-height: 7rem;
	background:
		radial-gradient(circle at center, var(--gray-25), var(--gray-0)),
		linear-gradient(0deg, var(--gray-50), var(--gray-50));
	background-blend-mode: normal;
}
.preview-trace {
	padding: 0.55rem 1rem;
	border-top: 1px solid var(--gray-150);
	background: var(--gray-50);
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--gray-600);
	display: flex;
	align-items: center;
	gap: 0.6rem;
	flex-wrap: wrap;
}
.preview-trace .label {
	color: var(--gray-500);
	font-weight: 500;
}
.preview-trace .arrow {
	color: var(--gray-400);
}
.preview-trace .val {
	color: var(--accent-700);
	font-weight: 600;
}
.preview-trace .ts {
	color: var(--gray-400);
	margin-left: auto;
}
.preview-trace .event {
	color: var(--layer-sema);
	font-weight: 600;
}

/* ─────────────────────────────────────────────────────────────────────
 * Controls panel
 * ───────────────────────────────────────────────────────────────────── */

.controls {
	margin-top: 1rem;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	background: var(--gray-0);
	overflow: hidden;
}
.controls-head {
	padding: 0.55rem 1rem;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	color: var(--gray-500);
	background: var(--gray-50);
	border-bottom: 1px solid var(--gray-150);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	font-weight: 500;
}
.controls-grid {
	padding: 1rem;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: 0.75rem 1.25rem;
}
.control {
	display: flex;
	flex-direction: column;
	gap: 0.3rem;
	min-width: 0;
}
.control-label {
	font-family: var(--font-mono);
	font-size: 0.72rem;
	color: var(--gray-500);
	font-weight: 500;
	display: flex;
	align-items: center;
	gap: 0.35rem;
}
.control-label .ty {
	color: var(--gray-400);
	font-weight: 400;
}
.control input[type='text'],
.control select {
	padding: 0.4rem 0.6rem;
	border: 1px solid var(--gray-300);
	border-radius: var(--radius-sm);
	background: var(--gray-0);
	font: inherit;
	font-size: 0.85rem;
	color: var(--gray-900);
	transition: border-color 120ms var(--ease), box-shadow 120ms var(--ease);
}
.control input[type='text']:focus,
.control select:focus {
	outline: none;
	border-color: var(--accent-500);
	box-shadow: 0 0 0 3px var(--accent-100);
}

/* Switch-style boolean control */
.switch {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	cursor: pointer;
	user-select: none;
	font-size: 0.85rem;
	color: var(--gray-700);
}
.switch input {
	position: absolute;
	opacity: 0;
	width: 0;
	height: 0;
}
.switch-track {
	position: relative;
	width: 30px;
	height: 18px;
	background: var(--gray-300);
	border-radius: 999px;
	transition: background 150ms var(--ease);
}
.switch-track::after {
	content: '';
	position: absolute;
	top: 2px;
	left: 2px;
	width: 14px;
	height: 14px;
	background: var(--gray-0);
	border-radius: 50%;
	transition: transform 150ms var(--ease);
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}
.switch input:checked + .switch-track {
	background: var(--accent-600);
}
.switch input:checked + .switch-track::after {
	transform: translateX(12px);
}
.switch input:focus-visible + .switch-track {
	box-shadow: 0 0 0 3px var(--accent-100);
}

/* ─────────────────────────────────────────────────────────────────────
 * Code blocks
 * ───────────────────────────────────────────────────────────────────── */

.code-stack {
	display: grid;
	gap: 0.85rem;
	margin: 1rem 0 0;
}
.code {
	margin: 0;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	background: var(--code-bg);
	overflow: hidden;
}
.code-stack .code {
	margin: 0;
}
.code-head {
	display: flex;
	justify-content: flex-start;
	gap: 0.6rem;
	align-items: center;
	padding: 0.45rem 0.85rem;
	background: var(--code-bg-soft);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: rgba(226, 232, 240, 0.55);
}
.code-head .lang {
	letter-spacing: 0.04em;
	text-transform: uppercase;
	font-weight: 500;
	margin-left: auto;
}
.code-head .code-title {
	font-family: var(--font-sans);
	font-size: 0.72rem;
	font-weight: 500;
	color: rgba(226, 232, 240, 0.7);
	letter-spacing: 0;
	text-transform: none;
}
.code pre {
	margin: 0;
	padding: 1rem 1.1rem;
	overflow-x: auto;
	font-family: var(--font-mono);
	font-size: 0.82rem;
	line-height: 1.6;
	color: var(--code-fg);
	font-feature-settings: 'liga' 0;
}
.code .tag { color: var(--code-tag); }
.code .attr { color: var(--code-attr); }
.code .str { color: var(--code-string); }
.code .com { color: var(--code-comment); font-style: italic; }
.code .kw { color: var(--code-keyword); }
.code .punct { color: var(--code-punct); }

/* ─────────────────────────────────────────────────────────────────────
 * Tables
 * ───────────────────────────────────────────────────────────────────── */

.spec-wrap {
	margin: 0.75rem 0 0;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	overflow: hidden;
	background: var(--gray-0);
}
.spec-caption {
	font-size: 0.85rem;
	color: var(--gray-700);
	font-weight: 500;
	margin: 1.5rem 0 0.4rem;
	display: flex;
	align-items: center;
	gap: 0.5rem;
}
.spec {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.85rem;
}
.spec thead th {
	text-align: left;
	padding: 0.55rem 0.9rem;
	background: var(--gray-50);
	border-bottom: 1px solid var(--gray-200);
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--gray-600);
}
.spec tbody td {
	padding: 0.65rem 0.9rem;
	border-bottom: 1px solid var(--gray-150);
	vertical-align: top;
	color: var(--gray-700);
}
.spec tbody tr:last-child td {
	border-bottom: none;
}
.spec tbody tr:hover td {
	background: var(--gray-50);
}
.spec td.name {
	font-family: var(--font-mono);
	font-size: 0.82rem;
	color: var(--gray-900);
	font-weight: 500;
	white-space: nowrap;
}
.spec td.type,
.spec td.value,
.spec td.source,
.spec td.default {
	font-family: var(--font-mono);
	font-size: 0.78rem;
	color: var(--gray-600);
	white-space: nowrap;
}
.spec td.desc {
	color: var(--gray-700);
	max-width: 36em;
	line-height: 1.5;
}
.spec .empty {
	color: var(--gray-400);
	font-style: italic;
}

/* Pills (tags within tables) */
.pill {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 500;
	letter-spacing: 0.02em;
	padding: 0.1rem 0.4rem;
	border-radius: var(--radius-xs);
	background: var(--gray-100);
	color: var(--gray-700);
	border: 1px solid var(--gray-200);
	margin-right: 0.3rem;
	vertical-align: middle;
	line-height: 1.4;
}
.pill.bindable {
	color: var(--accent-700);
	background: var(--accent-50);
	border-color: var(--accent-100);
}
.pill.required {
	color: #b91c1c;
	background: #fef2f2;
	border-color: #fecaca;
}
.pill.recommended {
	color: #b45309;
	background: #fffbeb;
	border-color: #fde68a;
}
.pill.optional {
	color: var(--gray-600);
}
.pill.static {
	color: var(--gray-500);
	background: transparent;
}
.pill.contact {
	color: #0d9488;
	background: #f0fdfa;
	border-color: #99f6e4;
}
.pill.commit {
	color: var(--layer-morfo);
	background: var(--layer-morfo-bg);
	border-color: #ddd6fe;
}
.pill.emerge {
	color: #c2410c;
	background: #fff7ed;
	border-color: #fed7aa;
}
.pill.signal {
	color: var(--layer-sema);
	background: var(--layer-sema-bg);
	border-color: #fbcfe8;
}

/* Empty state for tables */
.spec-empty {
	padding: 1rem 1.1rem;
	border: 1px dashed var(--gray-200);
	border-radius: var(--radius-md);
	background: var(--gray-50);
	color: var(--gray-600);
	font-size: 0.9rem;
}

/* ─────────────────────────────────────────────────────────────────────
 * Selector list (eidos)
 * ───────────────────────────────────────────────────────────────────── */

.selectors {
	margin: 0.75rem 0 0;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	overflow: hidden;
	background: var(--gray-0);
}
.selectors-row {
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 1rem;
	align-items: baseline;
	padding: 0.55rem 0.9rem;
	border-bottom: 1px solid var(--gray-150);
	transition: background 120ms var(--ease);
}
.selectors-row:hover {
	background: var(--gray-50);
}
.selectors-row:last-child {
	border-bottom: none;
}
.selectors-row .sel {
	font-family: var(--font-mono);
	font-size: 0.82rem;
	color: var(--gray-900);
	word-break: break-all;
}
.selectors-row.token .sel {
	color: var(--gray-500);
}
.selectors-row .tag {
	font-family: var(--font-mono);
	font-size: 0.68rem;
	color: var(--gray-500);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	white-space: nowrap;
	font-weight: 500;
}
.selectors-row.morfo .tag {
	color: var(--layer-morfo);
}
.selectors-row.token .tag {
	color: var(--gray-400);
}

/* ─────────────────────────────────────────────────────────────────────
 * Prose
 * ───────────────────────────────────────────────────────────────────── */

.prose {
	max-width: 65ch;
	color: var(--gray-700);
	line-height: 1.7;
	font-size: 0.95rem;
}
.prose p {
	margin: 0 0 1rem;
}
.prose strong {
	color: var(--gray-900);
	font-weight: 600;
}
.prose code {
	font-family: var(--font-mono);
	font-size: 0.86em;
	color: var(--gray-900);
	background: var(--gray-100);
	padding: 0.05em 0.35em;
	border-radius: 3px;
	border: 1px solid var(--gray-200);
}
.prose ul {
	margin: 0 0 1rem;
	padding-left: 1.25rem;
}
.prose li {
	margin: 0.25rem 0;
}
.prose blockquote {
	margin: 1.25rem 0;
	padding: 0.75rem 1rem;
	border-left: 3px solid var(--accent-600);
	background: var(--accent-50);
	border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
	color: var(--gray-800);
	font-style: italic;
}

/* ─────────────────────────────────────────────────────────────────────
 * TOC (right rail)
 * ───────────────────────────────────────────────────────────────────── */

.toc {
	position: sticky;
	top: 2.5rem;
	align-self: start;
	font-size: 0.85rem;
}
.toc-head {
	font-size: 0.72rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--gray-500);
	font-weight: 600;
	margin-bottom: 0.5rem;
	padding-bottom: 0.4rem;
	border-bottom: 1px solid var(--gray-200);
}
.toc ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 1px;
}
.toc a {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.3rem 0.5rem;
	color: var(--gray-600);
	text-decoration: none;
	border-radius: var(--radius-xs);
	transition: color 120ms var(--ease), background 120ms var(--ease);
	font-size: 0.85rem;
}
.toc a:hover {
	color: var(--gray-900);
	background: var(--gray-100);
}
.toc a .layer-badge {
	font-size: 0.62rem;
	padding: 0.05rem 0.3rem;
	border: none;
	background: transparent;
}
.toc a .layer-badge::before {
	width: 5px;
	height: 5px;
}

/* ─────────────────────────────────────────────────────────────────────
 * Landing
 * ───────────────────────────────────────────────────────────────────── */

.landing-hero {
	margin: 0 0 2.5rem;
}
.landing-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 0.75rem;
}
.landing-card {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
	padding: 1rem 1.1rem;
	background: var(--gray-0);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	text-decoration: none;
	color: inherit;
	transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease),
		transform 150ms var(--ease);
}
.landing-card:hover {
	border-color: var(--gray-300);
	box-shadow: var(--shadow-md);
	transform: translateY(-1px);
}
.landing-card-eyebrow {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: var(--gray-500);
	letter-spacing: 0.02em;
	font-weight: 500;
	margin-bottom: 0.25rem;
}
.landing-card-title {
	font-size: 1.05rem;
	font-weight: 600;
	letter-spacing: -0.01em;
}
.landing-card-desc {
	font-size: 0.85rem;
	color: var(--gray-600);
	line-height: 1.5;
}

/* ─────────────────────────────────────────────────────────────────────
 * Responsive
 * ───────────────────────────────────────────────────────────────────── */

@media (max-width: 1100px) {
	.canvas {
		grid-template-columns: minmax(0, 1fr);
		gap: 0;
	}
	.toc {
		display: none;
	}
}

@media (max-width: 720px) {
	.shell {
		grid-template-columns: 1fr;
	}
	.rail {
		position: relative;
		height: auto;
		border-right: none;
		border-bottom: 1px solid var(--gray-200);
		padding: 1rem;
	}
	.canvas {
		padding: 1.5rem 1.25rem 4rem;
	}
}

/* ─────────────────────────────────────────────────────────────────────
 * TOPBAR
 * ───────────────────────────────────────────────────────────────────── */

.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 0 1.25rem;
	height: 56px;
	background: var(--gray-0);
	border-bottom: 1px solid var(--gray-200);
	position: sticky;
	top: 0;
	z-index: 50;
	backdrop-filter: saturate(1.4) blur(8px);
}
.topbar-left,
.topbar-right {
	display: flex;
	align-items: center;
	gap: 1.25rem;
}
.topbar-right {
	gap: 0.4rem;
}
.brand {
	display: flex;
	align-items: center;
	gap: 0.55rem;
	text-decoration: none;
	color: var(--gray-900);
	padding-right: 0.75rem;
	border-right: 1px solid var(--gray-200);
}
.brand-mark {
	width: 26px;
	height: 26px;
	border-radius: 6px;
	background: linear-gradient(135deg, var(--gray-900), var(--gray-700));
	color: var(--gray-0);
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 700;
	font-size: 0.85rem;
	letter-spacing: -0.02em;
}
[data-theme='dark'] .brand-mark {
	background: linear-gradient(135deg, var(--gray-200), var(--gray-400));
	color: var(--gray-0);
}
.brand-name {
	font-weight: 600;
	font-size: 0.95rem;
	letter-spacing: -0.01em;
}
.brand-version {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: var(--gray-500);
	font-weight: 500;
}
.topbar-nav {
	display: flex;
	gap: 1.1rem;
}
.topbar-nav a {
	font-size: 0.875rem;
	color: var(--gray-600);
	text-decoration: none;
	font-weight: 500;
	padding: 0.3rem 0;
	border-bottom: 2px solid transparent;
	transition: color 120ms var(--ease), border-color 120ms var(--ease);
}
.topbar-nav a:hover {
	color: var(--gray-900);
}
.topbar-nav a.active {
	color: var(--gray-900);
}

.iconbtn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 32px;
	height: 32px;
	border-radius: var(--radius-sm);
	border: 1px solid transparent;
	background: transparent;
	color: var(--gray-600);
	cursor: pointer;
	transition: background 120ms var(--ease), color 120ms var(--ease),
		border-color 120ms var(--ease);
	text-decoration: none;
	padding: 0;
}
.iconbtn:hover {
	background: var(--gray-100);
	color: var(--gray-900);
	border-color: var(--gray-200);
}
.iconbtn:focus-visible {
	outline: none;
	box-shadow: 0 0 0 3px var(--accent-100);
	border-color: var(--accent-500);
}
.iconbtn[aria-pressed='true'] {
	background: var(--gray-100);
	color: var(--gray-900);
}

/* Adjust rail to account for topbar */
.shell {
	min-height: calc(100vh - 56px);
}
.rail {
	height: calc(100vh - 56px);
	top: 56px;
	padding-top: 1.25rem;
}

/* ─────────────────────────────────────────────────────────────────────
 * SEMA TAB — per-event signature visualizations
 * ───────────────────────────────────────────────────────────────────── */

.intent-picker {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	margin: 0 0 1.25rem;
	padding: 0.5rem 0.75rem;
	background: var(--gray-50);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	flex-wrap: wrap;
}
.intent-picker-label {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: var(--gray-500);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	margin-right: 0.4rem;
}
.intent-chip {
	background: var(--gray-0);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-sm);
	padding: 0.3rem 0.7rem;
	font: inherit;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	color: var(--gray-700);
	cursor: pointer;
	transition: all 120ms var(--ease);
}
.intent-chip:hover {
	border-color: var(--gray-400);
	color: var(--gray-900);
}
.intent-chip.active {
	background: var(--gray-900);
	color: var(--gray-0);
	border-color: var(--gray-900);
}
[data-theme='dark'] .intent-chip.active {
	background: var(--gray-200);
	color: var(--gray-0);
}

.event-block {
	margin: 1.25rem 0;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-md);
	background: var(--gray-0);
	overflow: hidden;
}
.event-block-head {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 0.6rem 1rem;
	background: var(--gray-50);
	border-bottom: 1px solid var(--gray-150);
	flex-wrap: wrap;
	gap: 0.75rem;
}
.event-name {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.85rem;
}
.event-name code {
	background: var(--gray-100);
	padding: 0.1rem 0.4rem;
	border-radius: var(--radius-xs);
	color: var(--gray-900);
}
.event-channels {
	display: flex;
	gap: 0.3rem;
	flex-wrap: wrap;
}
.event-actions {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	flex-wrap: wrap;
}
.play-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	padding: 0.25rem 0.6rem;
	font: inherit;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 500;
	color: var(--gray-0);
	background: var(--gray-900);
	border: 1px solid var(--gray-900);
	border-radius: var(--radius-sm);
	cursor: pointer;
	transition: background 120ms var(--ease), transform 80ms var(--ease);
}
.play-btn:hover {
	background: var(--accent-700);
	border-color: var(--accent-700);
}
.play-btn:active {
	transform: scale(0.96);
}
[data-theme='dark'] .play-btn {
	background: var(--gray-200);
	color: var(--gray-0);
	border-color: var(--gray-200);
}
[data-theme='dark'] .play-btn:hover {
	background: var(--accent-600);
	color: var(--gray-0);
	border-color: var(--accent-600);
}
.ch-pill {
	font-family: var(--font-mono);
	font-size: 0.68rem;
	font-weight: 500;
	padding: 0.1rem 0.45rem;
	border: 1px solid var(--gray-300);
	border-radius: var(--radius-xs);
	color: var(--gray-500);
	background: var(--gray-0);
}
.ch-pill.active {
	color: var(--accent-700);
	background: var(--accent-50);
	border-color: var(--accent-200);
}

.signature-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
	gap: 1rem;
	padding: 1rem;
}

.signature-card {
	border: 1px solid var(--gray-150);
	border-radius: var(--radius-sm);
	padding: 0.85rem;
	background: var(--gray-25);
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
}
.signature-card-head {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
}
.signature-card .ch-name {
	font-family: var(--font-mono);
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--gray-900);
	letter-spacing: 0.04em;
	text-transform: uppercase;
}
.signature-card .ch-status {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	color: var(--gray-400);
	text-transform: uppercase;
	letter-spacing: 0.06em;
}
.signature-card .ch-status.active {
	color: var(--accent-600);
}

.signature-fields {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 0.2rem 0.7rem;
	margin: 0;
	font-family: var(--font-mono);
	font-size: 0.74rem;
	line-height: 1.4;
}
.signature-fields dt {
	color: var(--gray-500);
}
.signature-fields dd {
	margin: 0;
	color: var(--gray-900);
}
.signature-fields .unit {
	color: var(--gray-400);
	font-size: 0.85em;
	margin-left: 0.1em;
}

.sig-affects {
	margin: 0.4rem 0 0;
	font-size: 0.78rem;
	color: var(--gray-500);
	line-height: 1.45;
	border-top: 1px dashed var(--gray-200);
	padding-top: 0.5rem;
}

/* Haptic pattern — alternating pulses and gaps. Each segment is a flex
 * row item with `flex` proportional to its ms duration, so the strip
 * visualises the pattern's rhythm regardless of total length. */
.haptic-pattern {
	height: 36px;
	display: flex;
	gap: 0;
	background: var(--gray-0);
	border-radius: var(--radius-xs);
	overflow: hidden;
	border: 1px solid var(--gray-150);
}
.haptic-segment {
	display: block;
	height: 100%;
	min-width: 2px;
}
.haptic-segment.pulse {
	background: var(--haptic-color, var(--accent-600));
}
.haptic-segment.gap {
	background: transparent;
}

/* Motion preview — animates a square per the signature */
.motion-preview {
	height: 56px;
	background:
		linear-gradient(0deg, transparent 11px, var(--gray-200) 12px),
		linear-gradient(90deg, transparent 11px, var(--gray-200) 12px);
	background-size: 12px 12px;
	background-color: var(--gray-0);
	border-radius: var(--radius-xs);
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}
.motion-target {
	width: 28px;
	height: 28px;
	background: var(--motion-color, var(--accent-600));
	border-radius: 4px;
	transform-origin: center;
	/* Animation runs forward then back (2 alternate iterations) and stops.
	 * Replay by clicking Play (the page bumps a key) or by changing intent
	 * (svelte remounts via {#key}). */
	animation: motion-cycle var(--dur, 240ms) var(--ease, ease-out) 2 alternate;
	transition: background 200ms ease-out;
}
@keyframes motion-cycle {
	from {
		transform: scale(var(--from, 1));
	}
	to {
		transform: scale(var(--to, 1));
	}
}

/* Sound spectrum — bars that visualize pitch + contour */
.sound-spectrum {
	display: flex;
	align-items: flex-end;
	gap: 2px;
	height: 56px;
	padding: 0.4rem;
	background: var(--code-bg);
	border-radius: var(--radius-xs);
}
.sound-spectrum .bar {
	flex: 1;
	background: linear-gradient(0deg, var(--accent-600), var(--accent-200));
	border-radius: 1px;
	min-width: 2px;
}

/* Color affects — swatch + visual demos of where color is applied */
.color-affects {
	display: flex;
	gap: 0.85rem;
	align-items: stretch;
}
.color-swatch-lg {
	width: 56px;
	height: 56px;
	border-radius: var(--radius-sm);
	border: 1px solid rgba(0, 0, 0, 0.1);
	flex-shrink: 0;
}
.color-affects-list {
	display: flex;
	flex-direction: column;
	gap: 0.3rem;
	font-size: 0.72rem;
	color: var(--gray-600);
	flex: 1;
}
.color-affects-row {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}
.affect-bar,
.affect-fill,
.affect-glow {
	width: 16px;
	height: 16px;
	flex-shrink: 0;
	border-radius: 3px;
}
.affect-bar {
	border: 2px solid currentColor;
	background: transparent;
}
.affect-fill {
	border: 0;
}
.affect-glow {
	background: var(--gray-100);
}

/* Presence preview — shows opacity + shadow */
.presence-preview {
	height: 56px;
	background: var(--gray-100);
	border-radius: var(--radius-xs);
	display: flex;
	align-items: center;
	justify-content: center;
}
.presence-target {
	width: 36px;
	height: 28px;
	background: var(--accent-600);
	border-radius: 4px;
}

/* Background applied to overall page in dark mode */
[data-theme='dark'] body {
	background: var(--gray-25);
	color: var(--gray-900);
}