/* xClean Tools — dark "engineering blueprint" design system. Tokens from DESIGN.md. */

@font-face {
	font-family: 'JetBrains Mono';
	src: url('/fonts/jetbrains-mono-latin-wght.woff2') format('woff2-variations');
	font-weight: 100 800;
	font-display: swap;
}
@font-face {
	font-family: 'Space Grotesk';
	src: url('/fonts/space-grotesk-latin-wght.woff2') format('woff2-variations');
	font-weight: 300 700;
	font-display: swap;
}

:root {
	color-scheme: dark;
	--bg-page: #0b2240;
	--bg-chrome: #0a1f3a;
	--bg-chrome-grad: linear-gradient(180deg, #0d2848, #0a1f3a);
	--bg-card: linear-gradient(180deg, #102e54, #0d2646);
	--bg-seg-hover: #123258;
	--bg-well: #0a1f3a;
	--bg-well-out: #081a31;
	--tint-card-head: rgba(10, 31, 58, 0.5);
	--tint-stat: rgba(8, 26, 49, 0.5);
	--bd-strong: #35619a;
	--bd-mid: #2e5688;
	--bd-well: #244a78;
	--bd-hair: #1d4270;
	--bd-well-hover: #4a76a8;
	--tx-primary: #eaf3fe;
	--tx-body: #dbe8f8;
	--tx-secondary: #a8c8ec;
	--tx-label: #c3d9f2;
	--tx-muted: #7c9fca;
	--tx-faint: #5f87b8;
	--accent: #7cc4ff;
	--accent-grad: linear-gradient(180deg, #8ecdff, #6ab5f5);
	--on-accent: #08203d;
	--glow: #9fd6ff;
	--error: #ff8a75;
	--display: 'Space Grotesk', sans-serif;
	--mono: 'JetBrains Mono', Menlo, monospace;
	--sh-card:
		0 1px 0 rgba(124, 196, 255, 0.18) inset, 0 0.5rem 1.5rem rgba(0, 0, 0, 0.45), 0 1.5rem 4rem rgba(0, 0, 0, 0.35);
	--sh-raised: 0 0.125rem 0.3125rem rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(124, 196, 255, 0.18);
	--sh-well: inset 0 0.1875rem 0.625rem rgba(0, 0, 0, 0.55);
	--sh-track: inset 0 0.125rem 0.375rem rgba(0, 0, 0, 0.5);
	--container: 80rem;
}
* {
	box-sizing: border-box;
}
::selection {
	background: var(--accent);
	color: var(--on-accent);
}
:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
}
html {
	/* the centered column's left edge must never move when page height changes */
	scrollbar-gutter: stable;
}
body {
	margin: 0;
	font: 400 0.8125rem/1.54 var(--mono);
	color: var(--tx-body);
	background-color: var(--bg-page);
	/* drafting grid: 1px cyan hairlines every 1.5rem, both axes */
	background-image:
		repeating-linear-gradient(
			0deg,
			rgba(124, 196, 255, 0.04) 0,
			rgba(124, 196, 255, 0.04) 1px,
			transparent 1px,
			transparent 1.5rem
		),
		repeating-linear-gradient(
			90deg,
			rgba(124, 196, 255, 0.04) 0,
			rgba(124, 196, 255, 0.04) 1px,
			transparent 1px,
			transparent 1.5rem
		);
	/* footer sticks to the viewport bottom, even on short pages */
	min-height: 100vh;
	display: flex;
	flex-direction: column;
}
main.wrap {
	flex: 1 0 auto;
	width: 100%;
}
a {
	color: var(--accent);
	text-decoration: none;
}
a:hover {
	text-decoration: underline;
}
code {
	font-family: var(--mono);
	font-size: 0.92em;
	color: var(--tx-label);
	overflow-wrap: anywhere;
}
button,
input,
textarea {
	font-family: inherit;
}

/* ---- header ---- */
.topline {
	background: var(--bg-chrome-grad);
	border-bottom: 1px solid var(--bd-hair);
	box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.35);
}
.top {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	height: 3.5rem;
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 1.5rem;
}
.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.75rem;
	font: 600 0.9375rem/1.35 var(--display);
	letter-spacing: 0.01em;
	color: var(--tx-primary);
}
.brand:hover {
	text-decoration: none;
}
/* logo: cyan-bordered box with a bottom-left → top-right diagonal, pure CSS */
.mark {
	position: relative;
	width: 1.375rem;
	height: 1.375rem;
	border: 1.5px solid var(--accent);
	border-radius: 0.1875rem;
}
.mark::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(
		to top right,
		transparent calc(50% - 0.75px),
		var(--accent) calc(50% - 0.75px),
		var(--accent) calc(50% + 0.75px),
		transparent calc(50% + 0.75px)
	);
}
.kk {
	margin-left: auto;
	font: 500 0.75rem/1.35 var(--mono);
	color: var(--tx-muted);
	background: none;
	border: 1px solid var(--bd-mid);
	border-radius: 0;
	padding: 0.25rem 0.5rem;
	cursor: pointer;
	transition:
		color 150ms,
		border-color 150ms;
}
.kk:hover {
	border-color: var(--accent);
	color: var(--accent);
}

/* ---- layout: one container width everywhere, left edges always align ---- */
.wrap {
	max-width: var(--container);
	margin: 0 auto;
	padding: 2.5rem 1.5rem 3.5rem;
}

/* ---- tool card: the single object on each page ---- */
.card {
	background: var(--bg-card);
	border: 1px solid var(--bd-strong);
	border-radius: 0.625rem;
	box-shadow: var(--sh-card);
	overflow: hidden;
}
.cardhead {
	display: flex;
	align-items: center;
	gap: 1rem;
	border-bottom: 1px solid var(--bd-hair);
	background: var(--tint-card-head);
	padding: 1rem 1.5rem;
}
h1 {
	font: 700 1.5rem/1.25 var(--display);
	letter-spacing: -0.01em;
	color: var(--tx-primary);
	margin: 0;
}
.help,
.lnk {
	font: 500 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--tx-muted);
	background: none;
	border: 0;
	padding: 0;
	text-decoration: underline;
	text-underline-offset: 0.25rem;
	cursor: pointer;
	transition: color 150ms;
}
.help {
	margin-left: auto;
}
.help:hover,
.help[aria-expanded='true'],
.lnk:hover {
	color: var(--accent);
}
.cardbody {
	padding: 1.25rem 1.5rem 1.375rem;
}

/* ---- controls row ---- */
.ctl {
	display: flex;
	gap: 1rem;
	align-items: center;
	flex-wrap: wrap;
	margin: 0 0 1.125rem;
}
.chips {
	display: inline-flex;
	flex-wrap: wrap;
	border: 1px solid var(--bd-mid);
	border-radius: 0.375rem;
	background: var(--bg-chrome);
	box-shadow: var(--sh-track);
	padding: 0.1875rem;
	gap: 0.1875rem;
}
.chip {
	font: 500 0.75rem/1.35 var(--mono);
	letter-spacing: 0.06em;
	color: var(--tx-secondary);
	background: none;
	border: 0;
	border-radius: 0.25rem;
	padding: 0.4375rem 1.125rem;
	cursor: pointer;
	transition:
		background 150ms,
		color 150ms;
}
.chip:hover {
	background: var(--bg-seg-hover);
}
.chip.on {
	font-weight: 600;
	color: var(--on-accent);
	background: var(--accent-grad);
	box-shadow:
		0 1px 0.25rem rgba(124, 196, 255, 0.5),
		inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.opt {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	font: 400 0.75rem/1.35 var(--mono);
	color: var(--tx-label);
	cursor: pointer;
}
.opt input[type='checkbox'] {
	accent-color: var(--accent);
	margin: 0;
}
.opt input[type='number'] {
	width: 4rem;
	font: 400 0.75rem/1.35 var(--mono);
	color: var(--tx-primary);
	background: var(--bg-well);
	border: 1px solid var(--bd-well);
	border-radius: 0.25rem;
	padding: 0.25rem 0.5rem;
}
.opt input[type='number']:hover,
.opt input[type='number']:focus {
	border-color: var(--bd-well-hover);
}

/* ---- work area: recessed wells ---- */
.work {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1.25rem;
	align-items: stretch;
}
.col {
	display: flex;
	flex-direction: column;
	gap: 0.375rem;
	min-width: 0;
}
.col.full {
	grid-column: 1 / -1;
}
.lr {
	display: flex;
	align-items: center;
	justify-content: space-between;
	min-height: 1.625rem;
}
.lr label {
	font: 600 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--tx-secondary);
}
.tool textarea {
	flex: 1;
	width: 100%;
	/* fill the viewport instead of leaving dead grid below the card */
	min-height: max(11rem, 30vh);
	font: 400 0.8125rem/1.54 var(--mono);
	color: var(--tx-primary);
	background: var(--bg-well);
	border: 1px solid var(--bd-well);
	border-radius: 0.375rem;
	box-shadow: var(--sh-well);
	padding: 0.75rem 0.875rem;
	resize: vertical;
	outline: none;
	transition: border-color 150ms;
}
.tool textarea:hover,
.tool textarea:focus {
	border-color: var(--bd-well-hover);
}
.tool textarea::placeholder {
	color: var(--tx-faint);
}
.tool textarea[readonly] {
	background: var(--bg-well-out);
	box-shadow: inset 0 0.1875rem 0.625rem rgba(0, 0, 0, 0.6);
	color: var(--glow);
	text-shadow: 0 0 0.75rem rgba(159, 214, 255, 0.35);
}
.tool textarea[readonly].bad {
	color: var(--error);
	text-shadow: none;
}
.copy,
.go {
	font: 600 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--tx-secondary);
	background: linear-gradient(180deg, #173a64, #102c50);
	border: 1px solid var(--bd-mid);
	border-radius: 0.3125rem;
	box-shadow: var(--sh-raised);
	padding: 0.3125rem 0.875rem;
	min-width: 4.75rem; /* label swaps COPY → COPIED — width must not change */
	cursor: pointer;
	transition:
		color 150ms,
		border-color 150ms;
}
.copy:hover,
.go:hover {
	border-color: var(--accent);
	color: var(--accent);
}
.note {
	font: 400 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.04em;
	color: var(--tx-muted);
	margin: 0.625rem 0 0;
}
/* errors render inside the output well; #error stays for screen readers and agents */
.err {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip-path: inset(50%);
	white-space: nowrap;
}

/* ---- card status bar ---- */
.stat {
	display: flex;
	align-items: center;
	gap: 0.625rem;
	border-top: 1px solid var(--bd-hair);
	background: var(--tint-stat);
	padding: 0.6875rem 1.5rem;
	font: 500 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.06em;
	color: var(--tx-muted);
}
.stat .arr {
	font-weight: 600;
	letter-spacing: 0;
	color: var(--accent);
}

/* ---- help docs (hidden behind the HELP toggle; prose stays in HTML for SEO) ---- */
.docs {
	margin-top: 2.5rem;
	border-top: 1px solid var(--bd-hair);
}
.docs > details {
	border-bottom: 1px solid var(--bd-hair);
}
.docs summary {
	font: 500 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--tx-muted);
	padding: 0.75rem 0;
	cursor: pointer;
}
.docs summary:hover {
	color: var(--accent);
}
.docs h3 {
	font: 600 0.875rem/1.35 var(--display);
	color: var(--tx-primary);
	margin: 0.75rem 0 0.25rem;
}
.docs p {
	font-size: 0.8125rem;
	line-height: 1.54;
	color: var(--tx-secondary);
	max-width: 72ch;
	margin: 0 0 0.75rem;
}
.docs details details {
	border: 0;
}
.docs details details summary {
	font: 600 0.8125rem/1.45 var(--mono);
	letter-spacing: 0;
	text-transform: none;
	color: var(--tx-body);
	padding: 0.5rem 0 0.25rem;
}
.tb {
	width: 100%;
	border-collapse: collapse;
	margin: 0 0 1rem;
	font: 0.75rem/1.5 var(--mono);
}
.tb td {
	border: 1px solid var(--bd-hair);
	padding: 0.375rem 0.625rem;
	color: var(--tx-secondary);
	word-break: break-all;
}

/* ---- hub / links directory ---- */
/* category header: bigger and bolder than the micro-labels so sections read at a glance */
.cat {
	font: 700 0.875rem/1.45 var(--mono);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--tx-secondary);
	margin: 2rem 0 0.875rem;
}
.cardbody > .cat:first-child {
	margin-top: 0;
}
.gr {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
	gap: 1rem;
}
.cl {
	display: block;
	background: var(--bg-well);
	border: 1px solid var(--bd-well);
	border-radius: 0.375rem;
	padding: 1.25rem;
	transition: border-color 150ms;
}
.cl:hover {
	border-color: var(--accent);
	text-decoration: none;
}
.cl .t {
	display: block;
	font: 600 0.8125rem/1.45 var(--mono);
	color: var(--tx-primary);
	margin-bottom: 0.125rem;
}
.cl .d {
	display: block;
	font: 400 0.6875rem/1.4 var(--mono);
	color: var(--tx-muted);
}
.cl.ext .t::after {
	content: ' \2197';
	color: var(--tx-muted);
	font-weight: 400;
}
.cl.ext {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
}
.cl .ic {
	width: 1.25rem;
	height: 1.25rem;
	border-radius: 0.25rem;
	flex: none;
	margin-top: 0.0625rem;
}
.cl-txt {
	min-width: 0;
}

/* ---- command palette ---- */
dialog#palette {
	width: min(35rem, 90vw);
	margin: 10vh auto 0;
	padding: 0;
	color: var(--tx-body);
	background: #0d2646;
	border: 1px solid var(--bd-strong);
	border-radius: 0.625rem;
	box-shadow: var(--sh-card);
}
dialog#palette::backdrop {
	background: rgba(4, 12, 24, 0.6);
}
#palette-input {
	width: 100%;
	color: var(--tx-primary);
	background: none;
	border: 0;
	border-bottom: 1px solid var(--bd-hair);
	padding: 0.8125rem 0.9375rem;
	font: 400 0.875rem/1.45 var(--mono);
	outline: none;
}
#palette-input::placeholder {
	color: var(--tx-faint);
}
#palette-list {
	list-style: none;
	margin: 0;
	padding: 0.375rem 0;
	max-height: 20rem;
	overflow-y: auto;
}
#palette-list li {
	display: flex;
	align-items: baseline;
	gap: 0.625rem;
	padding: 0.5rem 0.9375rem;
	font: 400 0.8125rem/1.45 var(--mono);
	cursor: pointer;
	border-left: 2px solid transparent;
}
#palette-list li.on {
	background: var(--bg-seg-hover);
	border-left-color: var(--accent);
}
#palette-list li .t {
	font-weight: 600;
	color: var(--tx-primary);
}
#palette-list li .d {
	color: var(--tx-muted);
	font-size: 0.75rem;
}

/* ---- footer ---- */
.foot {
	border-top: 1px solid var(--bd-hair);
	background: var(--bg-chrome);
}
.foot p {
	max-width: var(--container);
	margin: 0 auto;
	padding: 1rem 1.5rem;
	font: 400 0.6875rem/1.45 var(--mono);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--tx-faint);
}

@media (max-width: 48em) {
	.work {
		grid-template-columns: 1fr;
	}
	.tool textarea {
		min-height: 11rem;
	}
	.top,
	.wrap,
	.foot p {
		padding-left: 1rem;
		padding-right: 1rem;
	}
}