/* ============================================================
   404 · Base — reset, typography, primitives, utilities
   ============================================================ */

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

html {
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%;
	scroll-behavior: smooth;
	scrollbar-color: var(--line-strong) transparent;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: var(--font-sans);
	font-size: var(--fs-body);
	line-height: 1.6;
	font-feature-settings: "ss01", "cv01", "tnum";
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
	overflow-x: hidden;
	/* Faint archival grid + vignette, drawn with gradients (no images). */
	background-image:
		radial-gradient(1200px 700px at 80% -10%, rgba(216, 255, 62, 0.04), transparent 60%),
		linear-gradient(var(--grid) 1px, transparent 1px),
		linear-gradient(90deg, var(--grid) 1px, transparent 1px);
	background-size: auto, 64px 64px, 64px 64px;
	background-position: 0 0, 0 0, 0 0;
	background-attachment: fixed;
}

body::before {
	/* Ultra-subtle noise to kill banding on the near-black background. */
	content: "";
	position: fixed;
	inset: 0;
	z-index: -1;
	pointer-events: none;
	opacity: 0.025;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1, h2, h3, h4 {
	margin: 0;
	font-weight: 600;
	line-height: 1.08;
	letter-spacing: -0.02em;
}

p { margin: 0; }

a {
	color: inherit;
	text-decoration: none;
	transition: color var(--t-fast) var(--ease);
}

img, svg, video {
	max-width: 100%;
	height: auto;
	display: block;
}

button {
	font: inherit;
	color: inherit;
	cursor: pointer;
	border: 0;
	background: none;
}

input, textarea, select {
	font: inherit;
	color: inherit;
}

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

hr {
	border: 0;
	border-top: 1px solid var(--line);
	margin: 0;
}

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

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb {
	background: var(--line-strong);
	border-radius: var(--radius-pill);
	border: 2px solid var(--bg);
}

/* Visible, on-brand keyboard focus everywhere. */
:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
	border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

/* On lime-filled controls the lime ring is invisible — use a dark ring + bg spacer. */
.btn--accent:focus-visible,
.pagination .page-numbers.current:focus-visible,
.view-toggle__btn.is-active:focus-visible,
.filters__pill:focus-within:has(input:checked) {
	outline-color: var(--text);
	outline-offset: 2px;
	box-shadow: 0 0 0 4px var(--bg);
}

.screen-reader-text,
.sr-only {
	position: absolute !important;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0, 0, 0, 0);
	white-space: nowrap; border: 0;
}

.skip-link {
	position: absolute;
	left: 12px;
	top: -60px;
	z-index: var(--z-search);
	background: var(--accent);
	color: var(--accent-ink);
	padding: 10px 16px;
	border-radius: var(--radius-sm);
	font-weight: 600;
	transition: top var(--t) var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---- Layout primitives ---- */
.container {
	width: 100%;
	max-width: var(--container);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(40px, 6vw, 72px); }

.divider { height: 1px; background: var(--line); border: 0; }

/* ---- Text utilities ---- */
.mono { font-family: var(--font-mono); font-feature-settings: "tnum"; }
.u-muted { color: var(--text-muted); }
.u-faint { color: var(--text-faint); }
.u-accent { color: var(--accent); }

.eyebrow {
	font-family: var(--font-mono);
	font-size: var(--fs-eyebrow);
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: var(--text-faint);
	display: inline-flex;
	align-items: center;
	gap: 8px;
}
.eyebrow::before {
	content: "";
	width: 18px;
	height: 1px;
	background: var(--accent);
}

.tag {
	font-family: var(--font-mono);
	font-size: 0.72rem;
	letter-spacing: 0.04em;
	color: var(--text-muted);
}

.lead {
	font-size: var(--fs-lead);
	color: var(--text-muted);
	max-width: 52ch;
}

/* ---- Reveal-on-scroll (progressive; visible by default without JS) ---- */
.reveal {
	opacity: 1;
	transform: none;
}
.js .reveal {
	opacity: 0;
	transform: translateY(14px);
	transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
	will-change: opacity, transform;
}
.js .reveal.is-in {
	opacity: 1;
	transform: none;
}

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
	}
	.js .reveal { opacity: 1; transform: none; }
}