@charset "UTF-8";

/*
 * TODO: CSS files use flat selectors for iOS 15.2+ compat (no CSS nesting).
 * CSS nesting without `&` requires Safari 17.2+ (December 2023).
 * When iOS 17.2 is a safe baseline, reauthor with nested syntax by hand
 * (the postcss-nesting script only goes one direction) and add a
 * browser-compat notice for anyone still on older Safari:
 *
 *   @supports not (selector(&)) {
 *     .compat-banner { display: block; }
 *   }
 */

/* ── Reset ──────────────────────────────────────────── */

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

/* ── Tokens ─────────────────────────────────────────── */

:root {
	/* Surfaces */
	--bg: #0c0c0d;
	--surface: #141415;
	--surface-2: #1c1c1e;
	--border: #2a2a2d;

	/* Text */
	--text: #f0f0f0;
	--text-muted: #88888f;

	/* Primary accent */
	--accent: #b8ff57;
	--accent-dim: rgba(184, 255, 87, 0.1);

	/* Palette — ROYGBIV */
	--coral: #ff6b6b;
	--coral-dim: rgba(255, 107, 107, 0.12);
	--orange: #ff9040;
	--orange-dim: rgba(255, 144, 64, 0.12);
	--yellow: #ffd444;
	--yellow-dim: rgba(255, 212, 68, 0.12);
	--teal: #57d9a3;
	--teal-dim: rgba(87, 217, 163, 0.12);
	--sky: #38bdf8;
	--sky-dim: rgba(56, 189, 248, 0.12);
	--violet: #c084fc;
	--violet-dim: rgba(192, 132, 252, 0.12);
	--rose: #f472b6;
	--rose-dim: rgba(244, 114, 182, 0.12);

	/* Typography */
	--font-sans: "Bricolage Grotesque", system-ui, sans-serif;
	--font-serif: "Instrument Serif", Georgia, serif;
	--font-mono: "DM Mono", "Fira Code", Consolas, monospace;

	/* Shape */
	--radius: 8px;
	--radius-lg: 12px;
}

body:has(#theme-toggle:checked) {
	--bg: #f4f1eb;
	--surface: #ffffff;
	--surface-2: #ede9e0;
	--border: #d0ccc0;
	--text: #1a1a1a;
	--text-muted: #666660;
	--accent: #4a7c00;
	--accent-dim: rgba(74, 124, 0, 0.08);
	--coral: #dc2626;
	--coral-dim: rgba(220, 38, 38, 0.1);
	--orange: #c05000;
	--orange-dim: rgba(192, 80, 0, 0.1);
	--yellow: #907200;
	--yellow-dim: rgba(144, 114, 0, 0.1);
	--teal: #0d9488;
	--teal-dim: rgba(13, 148, 136, 0.1);
	--sky: #0284c7;
	--sky-dim: rgba(2, 132, 199, 0.1);
	--violet: #7c3aed;
	--violet-dim: rgba(124, 58, 237, 0.1);
	--rose: #db2777;
	--rose-dim: rgba(219, 39, 119, 0.1);
}

/* ── Base ───────────────────────────────────────────── */

html {
	font-size: 16px;
	scroll-behavior: smooth;
	scrollbar-gutter: stable;
}

body {
	font-family: var(--font-sans);
	background: var(--bg);
	color: var(--text);
	line-height: 1.6;
	min-height: 100dvh;
	display: flex;
	flex-direction: column;
}

main {
	flex: 1;
}

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

a:hover {
	text-decoration: underline;
}

/* ── Theme Toggle Input ─────────────────────────────── */

.theme-toggle-input {
	position: fixed;
	opacity: 0;
	width: 0;
	height: 0;
}

/* ── Reading Progress Bar ───────────────────────────── */

.progress-bar {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 3px;
	background: var(--accent);
	transform-origin: left;
	transform: scaleX(0);
	z-index: 200;
	animation: read-progress linear;
	animation-timeline: scroll(root block);
}

@keyframes read-progress {
	from { transform: scaleX(0); }
	to { transform: scaleX(1); }
}

/* ── Header ─────────────────────────────────────────── */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	height: 60px;
	padding: 0 2rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
	background: rgba(12, 12, 13, 0.88);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	border-bottom: 1px solid var(--border);
	transition: background .3s;
}

body:has(#theme-toggle:checked) .site-header {
	background: rgba(244, 241, 235, 0.88);
}

.site-logo {
	font-size: 1.1rem;
	font-weight: 800;
	color: var(--text);
	letter-spacing: -.02em;
}

.site-logo span {
	color: var(--accent);
}

.site-logo:hover {
	text-decoration: none;
}

.site-nav {
	display: flex;
	align-items: center;
	gap: 1.5rem;
}

.site-nav a {
	color: var(--text-muted);
	font-size: .875rem;
	font-weight: 500;
}

.site-nav a:hover {
	color: var(--text);
	text-decoration: none;
}

.theme-toggle-btn {
	width: 32px;
	height: 32px;
	border-radius: 50%;
	border: 1px solid var(--border);
	background: var(--surface-2);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	font-size: .9rem;
	line-height: 1;
	transition: border-color .2s, background .2s;
	user-select: none;
}

.theme-toggle-btn:hover {
	border-color: var(--accent);
}

.icon-light {
	display: none;
}

.icon-dark {
	display: flex;
}

body:has(#theme-toggle:checked) .icon-light { display: flex; }
body:has(#theme-toggle:checked) .icon-dark { display: none; }

/* ── Hero ───────────────────────────────────────────── */

.home-hero {
	position: relative;
	padding: 6rem 2rem 3rem;
	text-align: center;
	overflow: hidden;
	background-image:
		linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
		linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
	background-size: 60px 60px;
	background-attachment: fixed;
}

.home-hero::after {
	content: "";
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 55%;
	background: linear-gradient(to bottom, transparent, var(--bg));
	pointer-events: none;
	z-index: 0;
}

.home-hero h1 {
	font-size: clamp(2.5rem, 6vw, 4.5rem);
	font-weight: 800;
	letter-spacing: -.04em;
	line-height: 1.1;
	margin-bottom: 1.25rem;
}

.home-hero h1 em {
	font-family: var(--font-serif);
	font-style: italic;
	font-weight: 400;
	color: var(--accent);
}

body:has(#theme-toggle:checked) .home-hero {
	background-image:
		linear-gradient(rgba(0,0,0,.06) 1px, transparent 1px),
		linear-gradient(90deg, rgba(0,0,0,.06) 1px, transparent 1px);
}

.hero-glow {
	position: absolute;
	width: 700px;
	height: 700px;
	background: radial-gradient(circle, rgba(184, 255, 87, 0.18) 0%, transparent 65%);
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	pointer-events: none;
}

body:has(#theme-toggle:checked) .hero-glow {
	background: radial-gradient(circle, rgba(74, 124, 0, 0.08) 0%, transparent 65%);
}

.hero-content {
	position: relative;
	z-index: 1;
}

.hero-eyebrow {
	font-family: var(--font-mono);
	font-size: .75rem;
	color: var(--accent);
	letter-spacing: .12em;
	margin-bottom: 1.5rem;
}

.hero-sub {
	font-size: 1.1rem;
	color: var(--text-muted);
	max-width: 480px;
	margin: 0 auto 2.5rem;
}

.hero-stats {
	display: flex;
	gap: 2rem 3rem;
	justify-content: center;
	flex-wrap: wrap;
	margin-bottom: 2.5rem;
}

@property --stat-target {
	syntax: "<integer>";
	initial-value: 0;
	inherits: false;
}

.hero-stat strong {
	display: block;
	font-family: var(--font-mono);
	font-size: 2rem;
	font-weight: 500;
	color: var(--accent);
	line-height: 1.1;
	counter-reset: stat var(--stat-target);
	animation: hero-count 2s linear both;
	min-width: 4ch;
	text-align: center;
}

.hero-stat strong::after {
	content: counter(stat);
}

.hero-stat strong[data-suffix]::after {
	content: counter(stat) attr(data-suffix);
}

.hero-stat span {
	font-family: var(--font-mono);
	font-size: .7rem;
	color: var(--text-muted);
	letter-spacing: .08em;
	text-transform: uppercase;
}

@keyframes hero-count {
	from { --stat-target: 0; }
}

.hero-cta {
	display: inline-block;
	background: var(--accent);
	color: #0c0c0d;
	font-weight: 700;
	font-size: .9rem;
	padding: .75rem 2rem;
	border-radius: 999px;
	letter-spacing: -.01em;
	transition: opacity .2s, transform .2s;
}

.hero-cta:hover {
	text-decoration: none;
	opacity: .88;
	transform: translateY(-1px);
}

/* ── Filter Bar ─────────────────────────────────────── */

.examples-section {
	flex: 1;
}

.filter-radio {
	display: none;
}

.filter-bar {
	display: flex;
	justify-content: center;
	gap: .5rem;
	padding: 2.5rem 2rem 0;
	flex-wrap: wrap;
	position: relative;
	z-index: 1;
}

.filter-bar label {
	font-family: var(--font-mono);
	font-size: .72rem;
	font-weight: 500;
	color: var(--text-muted);
	border: 1px solid var(--border);
	border-radius: 999px;
	padding: .4rem 1.1rem;
	cursor: pointer;
	transition: color .15s, border-color .15s, background .15s;
	letter-spacing: .06em;
	text-transform: uppercase;
}

.filter-bar label:hover {
	color: var(--text);
	border-color: var(--text-muted);
}

body:has(#fc-all:checked) .filter-bar label[for="fc-all"],
body:has(#fc-form:checked) .filter-bar label[for="fc-form"],
body:has(#fc-nav:checked) .filter-bar label[for="fc-nav"],
body:has(#fc-layout:checked) .filter-bar label[for="fc-layout"],
body:has(#fc-feedback:checked) .filter-bar label[for="fc-feedback"] {
	color: #0c0c0d;
	background: var(--accent);
	border-color: var(--accent);
}

body:has(#theme-toggle:checked):has(#fc-all:checked) .filter-bar label[for="fc-all"],
body:has(#theme-toggle:checked):has(#fc-form:checked) .filter-bar label[for="fc-form"],
body:has(#theme-toggle:checked):has(#fc-nav:checked) .filter-bar label[for="fc-nav"],
body:has(#theme-toggle:checked):has(#fc-layout:checked) .filter-bar label[for="fc-layout"],
body:has(#theme-toggle:checked):has(#fc-feedback:checked) .filter-bar label[for="fc-feedback"] {
	color: #ffffff;
}

body:has(#fc-form:checked) .example-card:not([data-cat="form"]) { display: none; }
body:has(#fc-nav:checked) .example-card:not([data-cat="nav"]) { display: none; }
body:has(#fc-layout:checked) .example-card:not([data-cat="layout"]) { display: none; }
body:has(#fc-feedback:checked) .example-card:not([data-cat="feedback"]) { display: none; }

/* ── Examples Grid ──────────────────────────────────── */

.examples-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 1.5rem;
	padding: 2rem;
	max-width: 1400px;
	margin: 0 auto;
	width: 100%;
}

/* ── Example Card ───────────────────────────────────── */

.example-card {
	background: var(--surface);
	display: flex;
	flex-direction: column;
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	overflow: hidden;
	transition: border-color .2s, transform .2s, box-shadow .2s;
}

.example-card:has(.card-body:hover) {
	border-color: var(--accent);
	transform: translateY(-2px);
	box-shadow: 0 8px 24px rgba(0,0,0,.3);
}

.example-card:has(.card-body:hover) .card-preview {
	border-bottom-color: var(--accent);
}

.card-preview {
	background: var(--surface-2);
	height: 180px;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	position: relative;
	border-bottom: 1px solid var(--border);
}

.card-preview-inner {
	transform: scale(0.65);
	transform-origin: center center;
	user-select: none;
}

.card-body {
	padding: 1.25rem;
	display: block;
	text-decoration: none;
	flex: 1;
	transition: background .15s;
}

.card-body:hover {
	background: var(--accent-dim);
	text-decoration: none;
}

.card-meta {
	display: flex;
	gap: .5rem;
	margin-bottom: .65rem;
}

.badge {
	font-family: var(--font-mono);
	font-size: .56rem;
	font-weight: 500;
	letter-spacing: .05em;
	text-transform: uppercase;
	padding: .15rem .45rem;
	border-radius: 4px;
	border: 1px solid var(--border);
	color: var(--text-muted);
}

.badge-level.badge-beginner    { color: var(--teal);   border-color: var(--teal-dim);   background: var(--teal-dim); }
.badge-level.badge-intermediate { color: var(--orange); border-color: var(--orange-dim); background: var(--orange-dim); }
.badge-level.badge-advanced    { color: var(--coral);  border-color: var(--coral-dim);  background: var(--coral-dim); }

.card-new-badge {
	position: absolute;
	top: .65rem;
	right: .65rem;
	z-index: 2;
	font-family: var(--font-mono);
	font-size: .6rem;
	font-weight: 700;
	letter-spacing: .08em;
	text-transform: uppercase;
	color: #0c0c0d;
	background: var(--accent);
	padding: .2rem .5rem;
	border-radius: 999px;
	pointer-events: none;
	user-select: none;
}

.card-title {
	font-size: 1rem;
	font-weight: 600;
	color: var(--text);
	margin-bottom: .3rem;
	letter-spacing: -.01em;
}

.card-description {
	font-size: .85rem;
	color: var(--text-muted);
	line-height: 1.5;
}

/* ── Example Page ───────────────────────────────────── */

.example-page {
	max-width: 960px;
	margin: 0 auto;
	padding: 2.5rem 2rem;
	width: 100%;
}

.example-header {
	margin-bottom: 2.5rem;
}

.example-header h1 {
	font-size: clamp(1.75rem, 4vw, 2.5rem);
	font-weight: 800;
	letter-spacing: -.03em;
	line-height: 1.2;
	margin-bottom: .5rem;
}

.back-link {
	display: inline-flex;
	align-items: center;
	font-family: var(--font-mono);
	font-size: .8rem;
	color: var(--text-muted);
	border: 1px solid var(--border);
	border-radius: 999px;
	padding: .35rem .85rem;
	margin-bottom: 1.25rem;
	transition: color .15s, border-color .15s;
}

.back-link:hover {
	color: var(--text);
	border-color: var(--text-muted);
	text-decoration: none;
}

.example-description {
	font-size: 1.05rem;
	color: var(--text-muted);
}

.example-pub-date {
	font-family: var(--font-mono);
	font-size: .72rem;
	color: var(--text-muted);
	margin-top: .5rem;
	opacity: .6;
}

.demo-section {
	margin-bottom: 2.5rem;
}

.demo-section h2 {
	font-family: var(--font-mono);
	font-size: .7rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: .1em;
	color: var(--text-muted);
	margin-bottom: .75rem;
}

.code-section {
	margin-bottom: 2.5rem;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1.5rem;
}

.code-block {
	min-width: 0;
}

.code-block h2 {
	font-family: var(--font-mono);
	font-size: .7rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: .1em;
	color: var(--text-muted);
	margin-bottom: .75rem;
}

.explanation-section {
	margin-bottom: 2.5rem;
}

.explanation-section h2 {
	font-family: var(--font-mono);
	font-size: .7rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: .1em;
	color: var(--text-muted);
	margin-bottom: .75rem;
}

.explanation-section p {
	color: var(--text-muted);
	line-height: 1.75;
}

.demo-wrapper {
	position: relative;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	padding: 3rem 2rem;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 180px;
}

.code-pre-wrap {
	position: relative;
}

.copy-btn {
	position: absolute;
	top: .5rem;
	right: .5rem;
	z-index: 1;
	width: 28px;
	height: 28px;
	border-radius: var(--radius);
	border: 1px solid var(--border);
	background: var(--surface-2);
	color: var(--text-muted);
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: color .15s, border-color .15s;
	padding: 0;
}

.copy-btn:hover {
	color: var(--text);
	border-color: var(--text-muted);
}

.copy-btn.copied {
	color: var(--accent);
	border-color: var(--accent);
}

.copy-btn.copied .icon-copy { display: none; }
.copy-btn.copied .icon-check { display: block; }

.icon-check {
	display: none;
}

.explanation-section code,
.card-description code,
.example-description code {
	font-family: var(--font-mono);
	font-size: .8em;
	color: var(--text-muted);
	background: var(--surface-2);
	padding: .15em .4em;
	border-radius: 4px;
	border: 1px solid var(--border);
}

/* ── Prism Dark Theme ───────────────────────────────── */

pre[class*="language-"] {
	scrollbar-width: thin;
	scrollbar-color: var(--border) transparent;
	border-radius: var(--radius);
	font-family: var(--font-mono);
	font-size: .8rem;
	line-height: 1.65;
	overflow-x: auto;
	overflow-y: auto;
	max-height: 28rem;
	margin: 0;
	padding: 1.25rem 1.5rem;
	background: var(--surface-2) !important;
	border: 1px solid var(--border);
}

pre[class*="language-"]::-webkit-scrollbar {
	width: 4px;
	height: 4px;
}

pre[class*="language-"]::-webkit-scrollbar-track {
	background: transparent;
}

pre[class*="language-"]::-webkit-scrollbar-thumb {
	background: var(--border);
	border-radius: 999px;
}

pre[class*="language-"]::-webkit-scrollbar-thumb:hover {
	background: var(--text-muted);
}

body:has(#theme-toggle:checked) pre[class*="language-"] {
	background: var(--surface-2) !important;
}

code[class*="language-"] {
	font-family: var(--font-mono);
	background: none !important;
	color: #d0d0d8;
}

body:has(#theme-toggle:checked) code[class*="language-"] {
	color: #2a2a2a;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata { color: #5a5a65; font-style: italic; }

.token.punctuation { color: #6a6a75; }

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol { color: #b8ff57; }

.token.selector,
.token.attr-name,
.token.char,
.token.builtin { color: #88d4f5; }

.token.string,
.token.attr-value { color: #ffd080; }

.token.operator,
.token.entity,
.token.url { color: #ff9f7c; }

.token.atrule,
.token.keyword { color: #d9a6ff; }

.token.function,
.token.class-name { color: #79d4f5; }

.token.regex,
.token.important,
.token.variable { color: #ff79c6; }

body:has(#theme-toggle:checked) .token.comment { color: #999; }
body:has(#theme-toggle:checked) .token.property,
body:has(#theme-toggle:checked) .token.tag,
body:has(#theme-toggle:checked) .token.number { color: #2d7a00; }
body:has(#theme-toggle:checked) .token.selector,
body:has(#theme-toggle:checked) .token.attr-name { color: #0066aa; }
body:has(#theme-toggle:checked) .token.string,
body:has(#theme-toggle:checked) .token.attr-value { color: #aa5500; }
body:has(#theme-toggle:checked) .token.atrule,
body:has(#theme-toggle:checked) .token.keyword { color: #7700aa; }
body:has(#theme-toggle:checked) .token.function { color: #005588; }
body:has(#theme-toggle:checked) .token.punctuation { color: #999; }

/* ── Footer ─────────────────────────────────────────── */

.site-footer {
	padding: 2.5rem 2rem;
	text-align: center;
	color: var(--text-muted);
	font-size: .825rem;
	border-top: 1px solid var(--border);
	background: var(--surface);
	margin-top: 4rem;
}

.site-footer a {
	color: var(--text-muted);
}

.site-footer a:hover {
	color: var(--accent);
	text-decoration: none;
}

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

@media (max-width: 700px) {
	.site-header { padding: 0 1rem; }
	.home-hero { padding: 4rem 1.25rem 3rem; }
	.hero-stats { gap: 1.5rem; flex-wrap: wrap; }
	.examples-grid { grid-template-columns: 1fr; padding: 1rem; }
	.filter-bar { padding: 1.5rem 1.25rem 0; gap: .4rem; }
	.example-page { padding: 1.5rem 1rem; }
	.code-section { grid-template-columns: 1fr; }
}