:root {
	color-scheme: dark;
	--color-bg: #000000;
	--color-fg: #ffffff;
	--color-muted: #8aa399;
	--color-accent: #ffcc00;
	--color-accent-bright: #ffd633;
	--color-accent-text: #181818; /* Dark text on accent background */
	--color-action: #e63946;
	--color-change: #f4a261;
	--color-perspective: #9b5de5;
	--color-zoom: #e9c46a;
	--color-stabilize: #2a9d8f;
	--color-observe: #457b9d;
	--color-border: rgba(138, 163, 153, 0.25);
	--color-error: #e63946;
	--color-error-text: #ff6b7a;
	--color-success: #22c55e;
	--color-ink: #000000;
	/* Aliases for older pages */
	--color-foreground: var(--color-fg);
	--color-primary: var(--color-accent);
	--color-primary-hover: var(--color-accent-bright);
	--font-heading: 'Orbitron', 'Segoe UI', sans-serif;
	--font-body: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
	--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
	--max-content-width: 1100px;
	/* Containers */
	--container-narrow: 600px;
	--container: 700px;
	--container-wide: 800px;
	/* Spacing scale */
	--space-16: 16px;
	--space-24: 24px;
	--space-32: 32px;
  
	/* Transitions */
	--transition-fast: 0.15s ease;
	--transition-normal: 0.2s ease;
	--transition-slow: 0.3s ease;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	min-height: 100vh;
	font-family: var(--font-body);
	background: var(--color-bg);
	color: var(--color-fg);
	line-height: 1.6;
}

a {
	color: var(--color-accent);
	text-decoration: none;
}

a:hover,
a:focus {
	text-decoration: underline;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

/* Layout */
.app-header,
.app-footer {
	max-width: var(--max-content-width);
	margin: 0 auto;
	padding: 24px;
}

.app-header {
	display: flex;
	gap: 32px;
	align-items: center;
	justify-content: space-between;
	border-bottom: 1px solid var(--color-border);
}

.brand {
	display: flex;
	align-items: center;
	gap: 12px;
}

.logo {
	width: 48px;
	height: 48px;
	background-image: url('/assets/images/system-logo.png');
	background-size: contain;
	background-repeat: no-repeat;
	background-position: center;
}

.brand-text {
	font-family: var(--font-heading);
	font-size: 14px;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--color-muted);
}

.app-footer {
	display: flex;
	align-items: center;
	justify-content: space-between;
	border-top: 1px solid var(--color-border);
	color: var(--color-muted);
	font-size: 14px;
}

.footer-links {
	display: flex;
	gap: 16px;
}

/* Collapsible Section / Rollup Pattern */
/* Used for expandable content sections like AxisTotalsTable, ArchetypeDistributionTable */
.collapsible-header {
	all: unset;
	display: flex;
	justify-content: space-between;
	align-items: center;
	cursor: pointer;
	width: 100%;
	transition: opacity 0.2s ease;
}

.collapsible-header:hover {
	opacity: 0.8;
}

.collapsible-toggle {
	font-size: 10px;
	color: var(--color-muted);
	transition: transform 0.2s ease;
	display: inline-block;
}

.collapsible-toggle.expanded {
	transform: rotate(180deg);
}

/* Numbered Steps List */
/* Used for: homepage, network pages, survey forms */
.steps-list {
	list-style: none;
	counter-reset: step-counter;
	padding: 0;
	margin: 0;
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.steps-list li {
	counter-increment: step-counter;
	display: flex;
	gap: 16px;
	padding: 16px;
	border: 1px solid var(--color-border);
	border-radius: 12px;
	background: rgba(255, 255, 255, 0.02);
}

.steps-list li::before {
	content: counter(step-counter);
	font-family: var(--font-heading);
	font-size: 20px;
	color: var(--color-accent);
	min-width: 32px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
	border: 2px solid var(--color-accent);
	border-radius: 50%;
	flex-shrink: 0;
}

/* Compact variant for tighter spaces (e.g., survey forms) */
.steps-list.compact {
	gap: 12px;
}

.steps-list.compact li {
	padding: 12px 16px;
}

.steps-list.compact li::before {
	font-size: 16px;
	min-width: 28px;
	height: 28px;
}

/* Card Components */
/* Base card pattern used throughout the app */
.card {
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 24px;
	background: rgba(255, 255, 255, 0.02);
}

/* Interactive card with hover states */
.card-interactive {
	transition: all var(--transition-normal);
	cursor: pointer;
}

.card-interactive:hover {
	background: rgba(255, 255, 255, 0.05);
	border-color: var(--color-accent);
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Compact card for tighter layouts */
.card-compact {
	padding: 20px;
}

/* Button Utilities */

/* Base button styles */
.button {
	font-family: var(--font-heading);
	padding: 14px 32px;
	border-radius: 8px;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	cursor: pointer;
	transition: all var(--transition-normal);
	font-size: 16px;
	text-decoration: none;
	display: inline-block;
	border: 2px solid transparent;
}

/* Primary button - accent background with dark text */
.button-primary {
	border-color: var(--color-accent);
	background: var(--color-accent);
	color: var(--color-accent-text);
}

.button-primary:hover:not(:disabled) {
	background: var(--color-accent-bright);
	border-color: var(--color-accent-bright);
	transform: translateY(-1px);
}

/* Secondary button - subtle background with light text */
.button-secondary {
	border-color: var(--color-border);
	background: rgba(255, 255, 255, 0.05);
	color: var(--color-fg);
}

.button-secondary:hover:not(:disabled) {
	border-color: var(--color-accent);
	background: rgba(255, 204, 0, 0.1);
}

/* Disabled state */
.button:disabled {
	opacity: 0.3;
	cursor: not-allowed;
}

/* Size variants */
.button-sm {
	padding: 8px 16px;
	font-size: 14px;
}

.button-md {
	padding: 12px 24px;
	font-size: 15px;
}

.button-lg {
	padding: 16px 40px;
	font-size: 17px;
}

/* Shape variants */
.button-pill {
	border-radius: 999px;
}

/* Layout Utilities */

/* Constrained container widths */
.max-w-narrow {
	max-width: var(--container-narrow);
}

.max-w-default {
	max-width: var(--container);
}

.max-w-wide {
	max-width: var(--container-wide);
}

/* Vertical stack with configurable gap */
.stack {
	display: flex;
	flex-direction: column;
	gap: var(--stack-gap, var(--space-16));
}

/* Typography Utilities */

/* Section headings */
.heading-section {
	font-family: var(--font-heading);
	font-size: 28px;
	margin: 0 0 24px;
	letter-spacing: 0.08em;
}

/* Small labels and tags */
.label-small {
	font-size: 12px;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--color-muted);
}

/* Muted text */
.text-muted {
	color: var(--color-muted);
}

/* Responsive */
@media (max-width: 640px) {
	.app-header,
	.app-footer {
		padding: 16px;
	}

	.app-header {
		flex-direction: column;
		align-items: flex-start;
		gap: 16px;
	}
}