* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

:root {
	--bg: #050505;
	--surface: #0f0f0f;
	--card: #141414;
	--text: #f0f0f0;
	--text-muted: #888;
	--accent: #c8ff00;
	--accent-dim: rgba(200, 255, 0, 0.1);
	--border: rgba(255, 255, 255, 0.08);
	--border-hover: rgba(255, 255, 255, 0.15);
	--radius: 12px;
	--radius-lg: 16px;
}

html {
	scroll-behavior: smooth;
}

body {
	background: var(--bg);
	color: var(--text);
	font-family: 'Space Grotesk', system-ui, sans-serif;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

::selection {
	background: var(--accent);
	color: var(--bg);
}

/* ============================================
   HERO
   ============================================ */
.hero {
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	padding: 2rem;
	position: relative;
	background: radial-gradient(ellipse at center, var(--surface) 0%, var(--bg) 70%);
}

.hero-content {
	max-width: 600px;
}

.hero-title {
	font-family: 'Syne', sans-serif;
	font-size: clamp(2.5rem, 10vw, 4.5rem);
	font-weight: 700;
	letter-spacing: -0.03em;
	line-height: 1.05;
	margin-bottom: 1rem;
}

.hero-subtitle {
	font-size: 1.25rem;
	color: var(--text-muted);
	margin-bottom: 3rem;
}

.scroll-hint {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.75rem;
	color: var(--text-muted);
	font-size: 0.85rem;
	animation: bounce 2s ease-in-out infinite;
}

.scroll-hint svg {
	color: var(--accent);
}

@keyframes bounce {
	0%, 100% { transform: translateY(0); }
	50% { transform: translateY(8px); }
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
	max-width: 900px;
	margin: 0 auto;
	padding: 4rem 2rem 8rem;
}

/* ============================================
   PAGE BADGE
   ============================================ */
.page-badge {
	display: inline-block;
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.7rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: 0.15em;
	color: var(--accent);
	background: var(--accent-dim);
	padding: 0.4rem 0.8rem;
	border-radius: 100px;
	margin-bottom: 1.5rem;
}

/* ============================================
   EXAMPLE SECTIONS
   ============================================ */
.example {
	margin-bottom: 6rem;
}

.example:last-child {
	margin-bottom: 0;
}

.example-header {
	display: flex;
	align-items: center;
	gap: 1rem;
	margin-bottom: 1.5rem;
}

.example-number {
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.75rem;
	color: var(--accent);
	letter-spacing: 0.1em;
}

.example-title {
	font-size: 0.8rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	color: var(--text-muted);
}

.example-content {
	margin-bottom: 1.5rem;
}

.example-instruction {
	font-size: 0.95rem;
	color: var(--text-muted);
	margin-bottom: 1.5rem;
}

.example-instruction code {
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.85em;
	background: var(--surface);
	padding: 0.2em 0.4em;
	border-radius: 4px;
}

/* ============================================
   DEMO AREA
   ============================================ */
.demo-area {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	padding: 2.5rem;
	position: relative;
}

.demo-area::before {
	content: '';
	position: absolute;
	inset: 0;
	background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
	opacity: 0.03;
	pointer-events: none;
	border-radius: inherit;
}

/* ============================================
   PROSE CONTENT
   ============================================ */
.prose {
	display: flex;
	flex-direction: column;
	gap: 1.25rem;
}

.prose p {
	font-size: 0.95rem;
	line-height: 1.7;
	color: var(--text-muted);
}

/* ============================================
   CODE BLOCKS
   ============================================ */
.code-block {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	margin-top: 1.5rem;
}

.code-block pre {
	padding: 1.25rem;
	overflow-x: auto;
}

.code-block code {
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.8rem;
	line-height: 1.7;
	color: var(--text-muted);
}

/* ============================================
   SCROLL PROGRESS - LINEAR BAR
   ============================================ */
.progress-bar {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 3px;
	background: var(--border);
	z-index: 1000;
}

.progress-bar__fill {
	height: 100%;
	background: var(--accent);
	transform-origin: left;
	transform: scaleX(0);
	will-change: transform;
}

/* Bottom position variant */
.progress-bar--bottom {
	top: auto;
	bottom: 0;
}

/* Thicker variant */
.progress-bar--thick {
	height: 5px;
}

/* ============================================
   SCROLL PROGRESS - CIRCULAR RING
   ============================================ */
.progress-circle {
	position: fixed;
	bottom: 2rem;
	right: 2rem;
	width: 60px;
	height: 60px;
	z-index: 1000;
}

.progress-circle__svg {
	transform: rotate(-90deg);
	width: 100%;
	height: 100%;
}

.progress-circle__bg {
	fill: none;
	stroke: var(--border);
	stroke-width: 3;
}

.progress-circle__fill {
	fill: none;
	stroke: var(--accent);
	stroke-width: 3;
	stroke-linecap: round;
	stroke-dasharray: 157;
	stroke-dashoffset: 157;
	will-change: stroke-dashoffset;
}

.progress-circle__text {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.7rem;
	color: var(--text-muted);
}

/* Top-right variant */
.progress-circle--top-right {
	bottom: auto;
	top: 2rem;
}

/* Top-left variant */
.progress-circle--top-left {
	bottom: auto;
	right: auto;
	top: 2rem;
	left: 2rem;
}

/* Bottom-left variant */
.progress-circle--bottom-left {
	right: auto;
	left: 2rem;
}

/* ============================================
   SCROLL PROGRESS - SIDE RAIL
   ============================================ */
.progress-rail {
	position: fixed;
	top: 0;
	width: 4px;
	height: 100vh;
	background: var(--border);
	z-index: 1000;
}

.progress-rail--left {
	left: 0;
}

.progress-rail--right {
	right: 0;
}

.progress-rail__fill {
	width: 100%;
	height: 100%;
	background: var(--accent);
	transform-origin: top;
	transform: scaleY(0);
	will-change: transform;
}

/* ============================================
   SCROLL PROGRESS - PERCENTAGE COUNTER
   ============================================ */
.progress-counter {
	position: fixed;
	bottom: 2rem;
	left: 2rem;
	font-family: 'JetBrains Mono', monospace;
	font-size: 1rem;
	color: var(--text-muted);
	z-index: 1000;
	display: flex;
	align-items: baseline;
	gap: 0.1em;
}

.progress-counter__value {
	font-size: 2rem;
	font-weight: 700;
	color: var(--accent);
	min-width: 2.5ch;
	text-align: right;
}

.progress-counter__symbol {
	font-size: 1rem;
	color: var(--text-muted);
}

/* Top-left variant */
.progress-counter--top-left {
	bottom: auto;
	top: 2rem;
}

/* Top-right variant */
.progress-counter--top-right {
	bottom: auto;
	left: auto;
	top: 2rem;
	right: 2rem;
}

/* Bottom-right variant */
.progress-counter--bottom-right {
	left: auto;
	right: 2rem;
}

/* ============================================
   INFO SECTION
   ============================================ */
.example--info .example-number {
	background: var(--accent-dim);
	padding: 0.5rem;
	border-radius: 8px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.example--info .example-number svg {
	color: var(--accent);
}

.info-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1.25rem;
}

.info-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.5rem;
}

.info-card h3 {
	font-size: 0.85rem;
	font-weight: 600;
	margin-bottom: 1rem;
	padding-bottom: 0.75rem;
	border-bottom: 1px solid var(--border);
}

.info-card--positive h3 {
	color: var(--accent);
}

.info-card--neutral h3 {
	color: var(--text-muted);
}

.info-card ul {
	list-style: none;
}

.info-card li {
	font-size: 0.85rem;
	color: var(--text-muted);
	padding: 0.35rem 0;
	padding-left: 1.25rem;
	position: relative;
}

.info-card li::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0.75rem;
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--border-hover);
}

.info-card--positive li::before {
	background: var(--accent);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
	.container {
		padding: 2rem 1.25rem 6rem;
	}

	.example {
		margin-bottom: 4rem;
	}

	.demo-area {
		padding: 1.5rem;
	}

	.info-grid {
		grid-template-columns: 1fr;
	}

	.code-block pre {
		padding: 1rem;
	}

	.code-block code {
		font-size: 0.75rem;
	}

	/* Progress indicators - smaller on mobile */
	.progress-circle {
		width: 50px;
		height: 50px;
		bottom: 1rem;
		right: 1rem;
	}

	.progress-counter {
		bottom: 1rem;
		left: 1rem;
	}

	.progress-counter__value {
		font-size: 1.5rem;
	}
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-delay: 0ms !important;
		transition-duration: 0.01ms !important;
	}

	/* Show progress at 100% for reduced motion */
	.progress-bar__fill {
		transform: scaleX(1);
	}

	.progress-circle__fill {
		stroke-dashoffset: 0;
	}

	.progress-rail__fill {
		transform: scaleY(1);
		height: 100%;
	}

	.progress-counter__value::after {
		content: '100';
	}
}