/* ---------------------------------------------------------------- */
/* Tokens — extends the real @gottheflag/ui palette used across the */
/* ecosystem, with a Dust-specific accent pair pulled from the      */
/* built-in Confetti palette for brand consistency.                 */
/* ---------------------------------------------------------------- */

:root {
	--ui-bg: #14161a;
	--ui-surface: #1c1f24;
	--ui-surface-2: #20242b;
	--ui-border: #2c2f36;
	--ui-fg: #e6e6e6;
	--ui-fg-dim: #9aa0aa;
	--ui-fg-dimmer: #6b7280;
	--ui-radius: 0.35rem;

	--accent: #7b61ff;
	--accent-2: #06d6a0;
	--accent-3: #ffd166;
	--accent-contrast: #14161a;

	--code-bg: #0f1115;
	--code-border: #24272e;

	--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
	--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

	--sidebar-width: 260px;
	--content-max: 780px;

	color-scheme: dark;
}

@media (prefers-color-scheme: light) {
	:root {
		--ui-bg: #fafafa;
		--ui-surface: #ffffff;
		--ui-surface-2: #f2f3f5;
		--ui-border: #e2e4e8;
		--ui-fg: #16181d;
		--ui-fg-dim: #565c66;
		--ui-fg-dimmer: #868c98;

		--code-bg: #f5f6f8;
		--code-border: #e2e4e8;
		--accent-contrast: #ffffff;

		color-scheme: light;
	}
}

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

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: var(--ui-bg);
	color: var(--ui-fg);
	font-family: var(--font-sans);
	font-size: 15px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
}

a {
	color: inherit;
	text-decoration: none;
}

::selection {
	background: color-mix(in srgb, var(--accent) 35%, transparent);
}

.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	background: var(--accent);
	color: var(--accent-contrast);
	padding: 0.6rem 1rem;
	z-index: 100;
	border-radius: 0 0 var(--ui-radius) 0;
}

.skip-link:focus {
	left: 0;
}

/* ---------------------------------------------------------------- */
/* Layout                                                           */
/* ---------------------------------------------------------------- */

.layout {
	display: grid;
	grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
	min-height: 100vh;
}

.sidebar {
	border-right: 1px solid var(--ui-border);
	padding: 1.5rem 1.25rem 3rem;
	position: sticky;
	top: 0;
	height: 100vh;
	overflow-y: auto;
}

.brand {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	margin-bottom: 0.35rem;
}

.brand-mark {
	width: 28px;
	height: 28px;
	border-radius: 8px;
	background: color-mix(in srgb, var(--accent) 25%, transparent);
	border: 1px solid var(--ui-border);
	display: grid;
	place-items: center;
	font-weight: 700;
	font-size: 0.85rem;
	color: var(--ui-fg);
	flex-shrink: 0;
}

.brand-name {
	font-weight: 600;
	font-size: 1.05rem;
	letter-spacing: -0.01em;
}

.brand-sub {
	font-size: 0.78rem;
	color: var(--ui-fg-dimmer);
	margin-bottom: 1.1rem;
}

.search {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	background: var(--ui-surface);
	border: 1px solid var(--ui-border);
	border-radius: var(--ui-radius);
	padding: 0.45rem 0.6rem;
	margin-bottom: 1.5rem;
	color: var(--ui-fg-dimmer);
	font-size: 0.85rem;
	cursor: text;
}

.search input {
	all: unset;
	flex: 1;
	min-width: 0;
	color: var(--ui-fg);
	font-size: 0.85rem;
	font-family: inherit;
}

.search kbd {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	border: 1px solid var(--ui-border);
	border-bottom-width: 2px;
	border-radius: 4px;
	padding: 0.1rem 0.35rem;
	color: var(--ui-fg-dimmer);
	background: var(--ui-surface-2);
	text-wrap: none;
	white-space: nowrap;
}

.nav-group {
	margin-bottom: 1.4rem;
}

.nav-group-title {
	font-size: 0.72rem;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--ui-fg-dimmer);
	margin-bottom: 0.5rem;
	font-weight: 600;
}

.nav-group ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.nav-group a {
	display: block;
	padding: 0.3rem 0.55rem;
	border-radius: 6px;
	font-size: 0.86rem;
	color: var(--ui-fg-dim);
	transition: background 0.12s ease, color 0.12s ease;
}

.nav-group a:hover {
	background: var(--ui-surface);
	color: var(--ui-fg);
}

.nav-group a.active {
	background: color-mix(in srgb, var(--accent) 16%, transparent);
	color: var(--accent);
	font-weight: 500;
}

.nav-group ul ul {
	margin-left: 0.6rem;
	border-left: 1px solid var(--ui-border);
	padding-left: 0.4rem;
}

.nav-group ul ul a {
	font-size: 0.8rem;
}

.menu-toggle {
	display: none;
}

/* ---------------------------------------------------------------- */
/* Content                                                          */
/* ---------------------------------------------------------------- */

main {
	padding: 3.5rem 2.5rem 8rem;
	max-width: var(--content-max);
	margin: 0 auto;
	width: 100%;
}

.kicker {
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--accent);
	font-weight: 600;
	margin-bottom: 0.5rem;
}

section {
	scroll-margin-top: 2rem;
}

.hero {
	margin-bottom: 3.5rem;
}

.hero h1 {
	font-size: 2.6rem;
	letter-spacing: -0.02em;
	margin: 0 0 0.6rem;
}

.hero p.tagline {
	font-size: 1.15rem;
	color: var(--ui-fg-dim);
	max-width: 42ch;
	margin: 0 0 1.75rem;
}

.meta-row {
	display: flex;
	flex-wrap: wrap;
	gap: 1.75rem;
	margin-bottom: 1.75rem;
}

.meta-item .label {
	display: block;
	font-size: 0.7rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ui-fg-dimmer);
	margin-bottom: 0.15rem;
}

.meta-item .value {
	font-size: 0.9rem;
	font-family: var(--font-mono);
}

.install-tabs {
	background: var(--code-bg);
	border: 1px solid var(--code-border);
	border-radius: var(--ui-radius);
	overflow: hidden;
	width: 100%;
}

.install-tab-list {
	display: flex;
	border-bottom: 1px solid var(--code-border);
}

.install-tab-list button {
	all: unset;
	cursor: pointer;
	padding: 0.55rem 1rem;
	font-size: 0.78rem;
	font-family: var(--font-mono);
	color: var(--ui-fg-dimmer);
}

.install-tab-list button.active {
	color: var(--accent);
	box-shadow: inset 0 -2px var(--accent);
}

.install-tab-body {
	position: relative;
}

.install-tab-body pre {
	margin: 0;
	border: none;
	border-radius: 0;
}

h2 {
	font-size: 1.6rem;
	letter-spacing: -0.01em;
	margin: 0 0 0.9rem;
	padding-top: 0.25rem;
}

h3 {
	font-size: 1.15rem;
	margin: 2.2rem 0 0.35rem;
	letter-spacing: -0.01em;
}

h3 .tag {
	font-size: 0.68rem;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ui-fg-dimmer);
	font-weight: 500;
	margin-left: 0.6rem;
	vertical-align: middle;
}

p {
	margin: 0 0 1rem;
	color: var(--ui-fg-dim);
}

section > .lede {
	font-size: 1rem;
	color: var(--ui-fg-dim);
	margin-bottom: 1.75rem;
}

code {
	font-family: var(--font-mono);
	font-size: 0.86em;
	background: var(--ui-surface-2);
	border: 1px solid var(--ui-border);
	padding: 0.1em 0.4em;
	border-radius: 4px;
}

pre {
	background: var(--code-bg);
	border: 1px solid var(--code-border);
	border-radius: var(--ui-radius);
	padding: 1rem 1.1rem;
	overflow-x: auto;
	margin: 0 0 1.25rem;
	position: relative;
}

pre code {
	background: none;
	border: none;
	padding: 0;
	font-size: 0.85rem;
	color: var(--ui-fg);
	line-height: 1.6;
}

.copy-btn {
	position: absolute;
	top: 0.5rem;
	right: 0.5rem;
	/* all: unset; */
	cursor: pointer;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	color: var(--ui-fg-dimmer);
	background: var(--ui-surface);
	border: 1px solid var(--ui-border);
	padding: 0.25rem 0.5rem;
	border-radius: 4px;
	opacity: 0;
	transition: opacity 0.12s ease, color 0.12s ease;
}

pre:hover .copy-btn {
	opacity: 1;
}

.copy-btn:hover {
	color: var(--ui-fg);
}

.copy-btn.copied {
	color: var(--accent-2);
	opacity: 1;
}

/* syntax highlighting (lightweight, class-based) */
.tok-kw { color: #c792ea; }
.tok-str { color: #06d6a0; }
.tok-com { color: var(--ui-fg-dimmer); font-style: italic; }
.tok-fn { color: #82aaff; }
.tok-num { color: #ffd166; }
.tok-prop { color: #f78c6c; }

table {
	width: 100%;
	border-collapse: collapse;
	margin: 0 0 1.5rem;
	font-size: 0.87rem;
}

th, td {
	text-align: left;
	padding: 0.55rem 0.7rem;
	border-bottom: 1px solid var(--ui-border);
	vertical-align: top;
}

th {
	color: var(--ui-fg-dimmer);
	font-weight: 600;
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

td code {
	white-space: nowrap;
}

.cards {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: 1rem;
	margin: 1.5rem 0 2.5rem;
}

.card {
	background: var(--ui-surface);
	border: 1px solid var(--ui-border);
	border-radius: var(--ui-radius);
	padding: 1.1rem 1.15rem;
}

.card .num {
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--accent);
	margin-bottom: 0.5rem;
	display: block;
}

.card h4 {
	margin: 0 0 0.35rem;
	font-size: 0.95rem;
}

.card p {
	margin: 0;
	font-size: 0.85rem;
	color: var(--ui-fg-dim);
}

.effect-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 1rem;
	margin: 1.5rem 0 2rem;
}

.effect-card {
	background: var(--ui-surface);
	border: 1px solid var(--ui-border);
	border-radius: var(--ui-radius);
	padding: 1.1rem;
}

.effect-card .swatch {
	width: 100%;
	height: 44px;
	border-radius: 6px;
	margin-bottom: 0.75rem;
}

.swatch-confetti { background: linear-gradient(90deg, #ef476f, #f78c2b, #ffd166, #06d6a0, #118ab2, #7b61ff); }
.swatch-snow { background: linear-gradient(135deg, #2c2f36, #6b7280 60%, #e6e6e6); }
.swatch-heart { background: linear-gradient(135deg, #ff4d6d, #ff8fa3, #c9184a); }
.swatch-text { background: linear-gradient(135deg, #14161a, #7b61ff); }
.swatch-image { background: linear-gradient(135deg, #118ab2, #06d6a0); }

.effect-card h4 {
	margin: 0 0 0.3rem;
	font-size: 0.95rem;
	font-family: var(--font-mono);
}

.effect-card p {
	font-size: 0.83rem;
	margin: 0;
	color: var(--ui-fg-dim);
}

.callout {
	border: 1px solid var(--ui-border);
	border-left: 3px solid var(--accent);
	background: var(--ui-surface);
	border-radius: 0 var(--ui-radius) var(--ui-radius) 0;
	padding: 0.9rem 1.1rem;
	margin: 0 0 1.5rem;
	font-size: 0.88rem;
}

.callout.warn {
	border-left-color: var(--accent-3);
}

.callout .callout-title {
	font-weight: 600;
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--accent);
	margin-bottom: 0.3rem;
	display: block;
}

.callout.warn .callout-title {
	color: var(--accent-3);
}

.callout p:last-child {
	margin-bottom: 0;
}

.pill {
	display: inline-block;
	font-size: 0.68rem;
	font-family: var(--font-mono);
	background: var(--ui-surface-2);
	border: 1px solid var(--ui-border);
	color: var(--ui-fg-dim);
	padding: 0.1rem 0.5rem;
	border-radius: 999px;
	margin-right: 0.35rem;
}

footer {
	border-top: 1px solid var(--ui-border);
	margin-top: 4rem;
	padding-top: 1.5rem;
	font-size: 0.8rem;
	color: var(--ui-fg-dimmer);
	display: flex;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 0.5rem;
}

footer a:hover {
	color: var(--ui-fg);
}

/* ---------------------------------------------------------------- */
/* Responsive                                                       */
/* ---------------------------------------------------------------- */

@media (max-width: 900px) {
	.layout {
		grid-template-columns: 1fr;
	}

	.sidebar {
		position: fixed;
		inset: 0 25% 0 0;
		z-index: 40;
		background: var(--ui-bg);
		transform: translateX(-100%);
		transition: transform 0.18s ease;
		box-shadow: 1px 0 0 var(--ui-border);
	}

	.sidebar.open {
		transform: translateX(0);
	}

	.menu-toggle {
		display: flex;
		align-items: center;
		gap: 0.5rem;
		position: fixed;
		top: 1rem;
		left: 1rem;
		z-index: 50;
		background: var(--ui-surface);
		border: 1px solid var(--ui-border);
		color: var(--ui-fg);
		padding: 0.5rem 0.75rem;
		border-radius: var(--ui-radius);
		font-size: 0.8rem;
		cursor: pointer;
	}

	main {
		padding: 5rem 1.25rem 6rem;
	}

	.hero h1 {
		font-size: 2rem;
	}
}