:root {
	--bg: #111827;
	--surface: #182235;
	--surface-hi: #202d43;

	--cyan: #8ecbd2;
	--cyan-bright: #b3e0e3;
	--cyan-dim: #557b83;

	--text: #c4ced8;
	--text-dim: #8e9dad;
	--heading: #d8e0e7;

	--amber: #d8b86a;
	--amber-dim: #827044;

	--green: #9bc9b5;

	--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
	--serif: Georgia, "Times New Roman", serif;
}

* {
	box-sizing: border-box;
}

html {
	background: var(--bg);
	scroll-behavior: smooth;
}

body {
	min-height: 100vh;
	margin: 0;
	background:
		radial-gradient(
			ellipse 120% 80% at 50% -10%,
			#1b2940 0%,
			var(--bg) 60%
		);
	color: var(--text);
	font-family: var(--serif);
	font-size: 17px;
	line-height: 1.75;
}

::selection {
	background: #536b78;
	color: #f0f3f5;
}

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

a:hover {
	color: var(--cyan-bright);
	text-decoration: underline;
}

:focus-visible {
	outline: 2px solid var(--amber);
	outline-offset: 4px;
}

.wrap {
	width: min(100% - 48px, 760px);
	margin: 0 auto;
}

/* ---------- HEADER ---------- */

header.site {
	padding: 48px 0 36px;
	border-bottom: 1px solid var(--cyan-dim);
}

.mark {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	margin: 0;
	color: var(--cyan);
	font-family: var(--mono);
	font-size: 15px;
	font-weight: 700;
	letter-spacing: 0.06em;
}

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

.mark .box {
	padding: 2px 6px;
	border: 1px solid var(--cyan);
	border-radius: 3px;
	font-size: 12px;
}

.tagline {
	margin: 10px 0 0;
	color: var(--text-dim);
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.04em;
}

/* ---------- HOMEPAGE HERO ---------- */

.hero {
	padding: 56px 0 0;
}

.eyebrow {
	margin: 0 0 14px;
	color: var(--amber);
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.08em;
}

.eyebrow::before {
	color: var(--amber-dim);
	content: "// ";
}

.hero h1 {
	max-width: 700px;
	margin: 0 0 24px;
	color: var(--heading);
	font-family: var(--serif);
	font-size: clamp(30px, 5vw, 44px);
	font-weight: 600;
	line-height: 1.2;
	letter-spacing: -0.02em;
}

.hero-lede {
	max-width: 66ch;
	margin: 0;
	color: var(--text);
	font-size: 18px;
	line-height: 1.8;
}

.hero-lede em {
	color: var(--cyan);
	font-family: var(--mono);
	font-size: 13px;
	font-style: normal;
}

/* ---------- SECTION HEADINGS ---------- */

.section-heading {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 64px 0 24px;
	color: var(--text-dim);
	font-family: var(--mono);
	font-size: 12px;
	font-weight: 400;
	letter-spacing: 0.05em;
}

.section-heading::before {
	color: var(--cyan-dim);
	content: "//";
}

.section-heading::after {
	flex: 1;
	height: 1px;
	background:
		repeating-linear-gradient(
			90deg,
			var(--cyan-dim) 0 6px,
			transparent 6px 10px
		);
	content: "";
}

/* ---------- GUIDE CARDS ---------- */

.guide {
	display: block;
	padding: 22px;
	margin-bottom: 16px;
	background: rgba(24, 34, 53, 0.82);
	border: 1px solid #40566b;
	border-radius: 4px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
	transition:
		border-color 0.15s ease,
		transform 0.15s ease,
		background 0.15s ease;
}

.guide:hover {
	background: var(--surface-hi);
	border-color: var(--cyan);
	transform: translateX(3px);
}

.guide-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 12px;
	margin: 0 0 8px;
	color: var(--text-dim);
	font-family: var(--mono);
	font-size: 12px;
	line-height: 1.5;
}

.guide-meta .status {
	color: var(--green);
}

.guide-meta .status.wip {
	color: var(--amber);
}

.guide h3 {
	margin: 0 0 8px;
	color: var(--heading);
	font-family: var(--serif);
	font-size: 20px;
	font-weight: 600;
	line-height: 1.4;
}

.guide h3 a {
	color: inherit;
	text-decoration: none;
}

.guide h3 a:hover {
	color: var(--cyan-bright);
	text-decoration: underline;
}

.guide > p:not(.guide-meta) {
	max-width: 60ch;
	margin: 0 0 14px;
	color: var(--text);
	font-size: 16px;
	line-height: 1.7;
}

.guide .arrow {
	display: inline-block;
	color: var(--cyan-dim);
	font-family: var(--mono);
	font-size: 13px;
}

.guide .arrow:hover {
	color: var(--cyan);
	text-decoration: none;
}

.guide .arrow span {
	display: inline-block;
	transition: transform 0.15s ease;
}

.guide .arrow:hover span {
	transform: translateX(3px);
}

.guide:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 4px;
}

/* ---------- ABOUT SECTION ---------- */

.about {
	margin-top: 64px;
	padding-top: 24px;
	border-top: 1px solid var(--cyan-dim);
}

.prompt-line {
	margin: 0 0 10px;
	color: var(--amber);
	font-family: var(--mono);
	font-size: 12px;
}

.prompt-line::before {
	color: var(--amber-dim);
	content: "$ ";
}

.about > p:not(.prompt-line) {
	max-width: 68ch;
	margin: 0;
	color: var(--text);
	line-height: 1.8;
}

/* ---------- FOOTER ---------- */

footer {
	margin-top: 80px;
	padding: 22px 0 40px;
	border-top: 1px solid var(--cyan-dim);
}

.fkeys {
	display: flex;
	flex-wrap: wrap;
	gap: 0 28px;
	font-family: var(--mono);
	font-size: 13px;
}

.fkeys a {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 6px 0;
	color: var(--text-dim);
}

.fkeys a:hover {
	color: var(--cyan);
	text-decoration: none;
}

.fkeys .key {
	padding: 0 5px;
	border-radius: 2px;
	background: var(--amber);
	color: var(--bg);
	font-size: 11px;
	font-weight: 700;
}

.copyright {
	margin: 20px 0 0;
	color: var(--text-dim);
	font-family: var(--mono);
	font-size: 11px;
}

/* ---------- GUIDE ARTICLE ---------- */

h1.guide-title {
	margin: 40px 0 32px;
	padding-bottom: 24px;
	border-bottom: 1px solid var(--cyan-dim);
	color: var(--heading);
	font-family: var(--serif);
	font-size: clamp(26px, 4vw, 38px);
	font-weight: 600;
	line-height: 1.2;
}

.guide-content {
	padding-bottom: 60px;
	font-size: 17px;
	line-height: 1.8;
}

.guide-content h2 {
	margin: 48px 0 16px;
	color: var(--heading);
	font-family: var(--serif);
	font-size: 24px;
}

.guide-content h3 {
	margin: 36px 0 12px;
	color: var(--heading);
	font-family: var(--serif);
	font-size: 19px;
}

.guide-content p {
	max-width: 68ch;
	margin: 0 0 22px;
}

.guide-content ul,
.guide-content ol {
	max-width: 68ch;
	margin: 0 0 22px;
	padding-left: 1.4em;
}

.guide-content li {
	margin-bottom: 7px;
}

.guide-content code {
	padding: 1px 6px;
	border: 1px solid #40566b;
	border-radius: 3px;
	background: #202d3e;
	color: var(--amber);
	font-family: var(--mono);
	font-size: 0.9em;
}

.guide-content pre {
	overflow-x: auto;
	margin: 0 0 24px;
	padding: 16px 18px;
	border: 1px solid #40566b;
	border-radius: 6px;
	background: #101a2a;
	color: var(--text);
	font-family: var(--mono);
	font-size: 13.5px;
	line-height: 1.5;
}

.guide-content pre code {
	padding: 0;
	border: none;
	background: none;
	color: var(--text);
}

.guide-content blockquote {
	margin: 0 0 24px;
	padding: 4px 20px;
	border-left: 3px solid var(--cyan-dim);
	color: var(--text-dim);
	font-style: italic;
}

.guide-content .admonitionblock {
	margin: 0 0 24px;
	padding: 14px 18px;
	border-left: 3px solid var(--amber);
	border-radius: 0 4px 4px 0;
	background: var(--surface);
}

.guide-content .admonitionblock .title {
	margin-bottom: 6px;
	color: var(--amber);
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: 0.05em;
	text-transform: uppercase;
}

.guide-content table {
	width: 100%;
	margin: 0 0 24px;
	border-collapse: collapse;
	font-size: 14px;
}

.guide-content th,
.guide-content td {
	padding: 8px 12px;
	border: 1px solid var(--cyan-dim);
	text-align: left;
}

.guide-content th {
	background: var(--surface);
	color: var(--text-dim);
	font-family: var(--mono);
	font-size: 12px;
}

.guide-content hr {
	margin: 40px 0;
	border: none;
	border-top: 1px solid var(--cyan-dim);
}

.guide-content img {
	max-width: 100%;
	border-radius: 4px;
}

/* ---------- BOOT SCREEN ---------- */

#boot {
	position: fixed;
	z-index: 100;
	inset: 0;
	overflow: hidden;
	padding: clamp(24px, 5vw, 80px);
	cursor: pointer;
	background: var(--bg);
	color: var(--green);
	font-family: var(--mono);
	font-size: clamp(13px, 1.35vw, 22px);
    line-height: 1.65;
}

#boot pre {
    width: min(100%, 1500px);
	max-width: none;
	margin: 0 auto;
	white-space: pre-wrap;
    overflow-wrap: break-word;
}

#boot .prompt {
	position: absolute;
    right: clamp(24px, 5vw, 80px);
	bottom: clamp(20px, 4vw, 56px);
	left: clamp(24px, 5vw, 80px);
	color: var(--text-dim);
	font-size: clamp(11px, 1vw, 16px);
    text-align: center;
}

#boot .cursor {
	display: inline-block;
	width: 0.55em;
    height: 1em;
    margin-left: 0.2em;
    vertical-align: -0.12em;
	background: var(--green);
	animation: blink 1s steps(1) infinite;
}

#boot.hidden {
	pointer-events: none;
	opacity: 0;
	transition: opacity 0.5s ease;
}

@keyframes blink {
	50% {
		opacity: 0;
	}
}

/* ---------- MOBILE ---------- */

@media (max-width: 600px) {
	body {
		font-size: 16px;
	}

	.wrap {
		width: min(100% - 36px, 760px);
	}

	header.site {
		padding: 40px 0 28px;
	}

	.hero {
		padding-top: 42px;
	}

	.hero h1 {
		font-size: clamp(28px, 9vw, 38px);
	}

	.hero-lede {
		font-size: 17px;
	}

	.guide {
		padding: 18px;
	}

	.guide > p:not(.guide-meta) {
		font-size: 15.5px;
	}

    .guide-content table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

	.fkeys {
		gap: 4px 20px;
	}

	#boot {
		padding: 24px 20px;
        font-size: clamp(12px, 3.4vw, 16px);
        line-height: 1.55;
	}

    #boot pre {
        width: 100%;
    }

	#boot .prompt {
        right: 20px;
		bottom: 20px;
		left: 20px;
        font-size: 11px;
	}
}

@media (min-width: 1400px) {
    #boot {
        font-size: 20px;
    }
}

/* ---------- REDUCED MOTION ---------- */

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	#boot {
		display: none;
	}

    #boot .cursor {
        opacity: 1;
    }

	* {
		animation: none !important;
		transition: none !important;
	}
}