/* =========================================================================
   Dead Pixels / 03 layout
   Header, navigation, page shells, footer.
   ========================================================================= */

/* -------------------------------------------------------------------------
   header
   ---------------------------------------------------------------------- */

.site-header {
	position: fixed;
	inset: 0 0 auto 0;
	z-index: 90;
	height: var(--header-h);
	display: flex;
	align-items: center;
	transition: height var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}

.site-header::before {
	content: "";
	position: absolute;
	inset: 0;
	background: color-mix(in srgb, var(--ink-000) 92%, transparent);
	backdrop-filter: blur(14px) saturate(140%);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	opacity: 0;
	transition: opacity var(--t-mid) var(--ease);
	pointer-events: none;
}

/* The rule grows out from the center as the page leaves the hero. */
.site-header::after {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	height: 1px;
	background: var(--line);
	transform: scaleX(0);
	transition: transform var(--t-slow) var(--ease-out);
}

.site-header.is-stuck::before {
	opacity: 1;
}

.site-header.is-stuck::after {
	transform: scaleX(1);
}

.site-header.is-hidden {
	transform: translateY(-102%);
	transition: transform var(--t-mid) var(--ease);
}

.header-inner {
	position: relative;
	z-index: 1;
	width: 100%;
	max-width: var(--shell);
	margin-inline: auto;
	padding-inline: var(--gutter);
	display: flex;
	align-items: center;
	gap: var(--sp-5);
}

/* brand ------------------------------------------------------------- */

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.7rem;
	flex: none;
	margin-right: auto;
}

.dp-mark {
	position: relative;
	width: 40px;
	height: 40px;
	display: grid;
	place-items: center;
	flex: none;
}

.dp-mark__img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	transition: transform var(--t-slow) var(--ease-out), filter var(--t-slow) var(--ease-out);
	filter: drop-shadow(0 0 10px rgba(58, 127, 232, 0));
}

/* Aperture ring that closes in on hover. */
.dp-mark::after {
	content: "";
	position: absolute;
	inset: -6px;
	border: 1px solid var(--line-strong);
	border-radius: 50%;
	opacity: 0;
	transform: scale(1.25);
	transition: opacity var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out);
}

.brand:hover .dp-mark::after,
.brand:focus-visible .dp-mark::after {
	opacity: 1;
	transform: scale(1);
}

.brand:hover .dp-mark__img {
	transform: scale(1.06);
	filter: drop-shadow(0 0 14px rgba(58, 127, 232, 0.55));
}

.brand__text {
	display: flex;
	flex-direction: column;
	line-height: 1;
}

.brand__name {
	font-family: var(--font-display);
	font-variation-settings: "wdth" 118, "wght" 700;
	font-size: 1.0625rem;
	letter-spacing: 0.01em;
	text-transform: uppercase;
	color: #fff;
}

.brand__meta {
	font-family: var(--font-mono);
	font-size: 0.5625rem;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: var(--fg-faint);
	margin-top: 4px;
}

/* desktop nav ------------------------------------------------------- */

.nav-desktop {
	display: flex;
	align-items: center;
}

.nav-list {
	display: flex;
	align-items: center;
	gap: clamp(0.25rem, 1.4vw, 1.4rem);
	list-style: none;
	margin: 0;
	padding: 0;
}

.nav-link {
	position: relative;
	display: inline-flex;
	align-items: baseline;
	gap: 0.4rem;
	padding: 0.55rem 0.6rem;
	font-family: var(--font-mono);
	font-size: var(--fs-sm);
	font-weight: 500;
	letter-spacing: 0.02em;
	color: var(--fg-soft);
	transition: color var(--t-mid) var(--ease);
}

.nav-link__index {
	font-size: 0.5625rem;
	letter-spacing: 0.1em;
	color: var(--fg-faint);
	transition: color var(--t-mid) var(--ease);
}

/* Two stacked copies of the label; hover slides one out and one in. */
.nav-link__text {
	position: relative;
	display: inline-block;
	overflow: hidden;
	height: 1.25em;
}

.nav-link__a,
.nav-link__b {
	display: block;
	transition: transform var(--t-mid) var(--ease-out);
}

.nav-link__b {
	position: absolute;
	inset: 0;
	transform: translateY(105%);
	color: var(--ice);
}

.nav-link:hover .nav-link__a,
.nav-link:focus-visible .nav-link__a {
	transform: translateY(-105%);
}

.nav-link:hover .nav-link__b,
.nav-link:focus-visible .nav-link__b {
	transform: translateY(0);
}

.nav-link:hover,
.nav-link:focus-visible {
	color: var(--ice);
}

.nav-link:hover .nav-link__index {
	color: var(--ice-dim);
}

.nav-list__item.is-current .nav-link {
	color: #fff;
}

.nav-list__item.is-current .nav-link::after {
	content: "";
	position: absolute;
	left: 0.6rem;
	right: 0.6rem;
	bottom: 0.2rem;
	height: 1px;
	background: var(--ice);
}

.nav-list__item.is-current .nav-link__index {
	color: var(--ice);
}

/* submenu ------------------------------------------------------------ */

.nav-list__item {
	position: relative;
}

.nav-sub {
	position: absolute;
	top: calc(100% + 0.4rem);
	left: 0;
	min-width: 200px;
	background: var(--ink-050);
	border: var(--border);
	padding: 0.4rem;
	list-style: none;
	opacity: 0;
	visibility: hidden;
	transform: translateY(-6px);
	transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast);
	z-index: 5;
}

.nav-list__item:hover > .nav-sub,
.nav-list__item:focus-within > .nav-sub {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.nav-sub__link {
	display: block;
	padding: 0.5rem 0.65rem;
	font-family: var(--font-mono);
	font-size: var(--fs-sm);
	color: var(--fg-soft);
	transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.nav-sub__link:hover {
	background: var(--ink-200);
	color: var(--ice);
}

/* header actions ----------------------------------------------------- */

.header-actions {
	display: flex;
	align-items: center;
	gap: var(--sp-3);
	flex: none;
}

.header-cta {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.55rem;
	padding: 0.62rem 1rem;
	border: 1px solid var(--line-strong);
	border-radius: var(--radius);
	font-family: var(--font-mono);
	font-size: var(--fs-label);
	font-weight: 500;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--fg);
	overflow: hidden;
	isolation: isolate;
	transition: color var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
	min-height: 42px;
}

.header-cta::before {
	content: "";
	position: absolute;
	inset: 0;
	background: var(--ice);
	transform: translateY(101%);
	transition: transform var(--t-mid) var(--ease-out);
	z-index: -1;
}

.header-cta:hover,
.header-cta:focus-visible {
	color: var(--ink-000);
	border-color: var(--ice);
}

.header-cta:hover::before,
.header-cta:focus-visible::before {
	transform: translateY(0);
}

.header-cta .icon {
	color: currentColor;
}

/* menu toggle -------------------------------------------------------- */

.nav-toggle {
	display: none;
	width: 46px;
	height: 46px;
	border: 1px solid var(--line-strong);
	border-radius: var(--radius);
	place-items: center;
	position: relative;
	z-index: 2;
	transition: border-color var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}

.nav-toggle:hover {
	border-color: var(--ice);
}

.nav-toggle__bars {
	position: relative;
	width: 18px;
	height: 12px;
}

.nav-toggle__bars span {
	position: absolute;
	left: 0;
	width: 100%;
	height: 1.5px;
	background: var(--fg);
	transition: transform var(--t-mid) var(--ease-out), opacity var(--t-fast) var(--ease),
		width var(--t-mid) var(--ease-out);
}

.nav-toggle__bars span:nth-child(1) {
	top: 0;
}

.nav-toggle__bars span:nth-child(2) {
	top: 5px;
	width: 68%;
}

.nav-toggle__bars span:nth-child(3) {
	top: 10px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
	transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
	opacity: 0;
	width: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
	transform: translateY(-5px) rotate(-45deg);
}

/* -------------------------------------------------------------------------
   mobile overlay menu
   ---------------------------------------------------------------------- */

.nav-panel {
	position: fixed;
	inset: 0;
	z-index: 80;
	background: var(--ink-000);
	display: flex;
	flex-direction: column;
	padding: calc(var(--header-h) + 2rem) var(--gutter) 2rem;
	overflow-y: auto;
	clip-path: inset(0 0 100% 0);
	visibility: hidden;
	transition: clip-path var(--t-slow) var(--ease-out), visibility var(--t-slow);
}

.nav-panel::before {
	content: "";
	position: absolute;
	inset: 0;
	background-image:
		linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
		linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
	background-size: var(--grid-cell) var(--grid-cell);
	pointer-events: none;
}

.nav-panel.is-open {
	clip-path: inset(0 0 0 0);
	visibility: visible;
}

.nav-panel__inner {
	position: relative;
	margin-top: auto;
	margin-bottom: auto;
	width: 100%;
}

.nav-panel .nav-list {
	flex-direction: column;
	align-items: stretch;
	gap: 0;
	border-top: var(--border);
}

.nav-panel .nav-list__item {
	border-bottom: var(--border);
}

.nav-panel .nav-link {
	width: 100%;
	padding: clamp(0.85rem, 2.6vw, 1.35rem) 0;
	font-family: var(--font-display);
	font-variation-settings: "wdth" 112, "wght" 700;
	font-size: clamp(1.75rem, 9vw, 3rem);
	letter-spacing: -0.03em;
	text-transform: uppercase;
	color: var(--fg);
	gap: 1rem;
	align-items: baseline;
	opacity: 0;
	transform: translateY(18px);
}

.nav-panel.is-open .nav-link {
	opacity: 1;
	transform: none;
	transition: opacity var(--t-slow) var(--ease-out) var(--d, 0ms),
		transform var(--t-slow) var(--ease-out) var(--d, 0ms), color var(--t-mid) var(--ease);
}

.nav-panel .nav-link__index {
	font-size: 0.6875rem;
	color: var(--fg-faint);
}

.nav-panel .nav-link__text {
	height: 1.05em;
}

.nav-panel .nav-list__item.is-current .nav-link::after {
	display: none;
}

.nav-panel .nav-list__item.is-current .nav-link {
	color: var(--ice);
}

.nav-panel__foot {
	position: relative;
	margin-top: var(--sp-7);
	display: flex;
	flex-wrap: wrap;
	gap: var(--sp-4);
	align-items: center;
	justify-content: space-between;
}

body.nav-open {
	overflow: hidden;
}

/* -------------------------------------------------------------------------
   page shell
   ---------------------------------------------------------------------- */

.site-main {
	position: relative;
	display: block;
}

.page-head {
	position: relative;
	padding-top: calc(var(--header-h) + clamp(3.5rem, 8vw, 7rem));
	padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
	overflow: hidden;
	border-bottom: var(--border);
}

.page-head__inner {
	position: relative;
	z-index: 1;
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(0, 0.66fr);
	gap: var(--sp-6) var(--sp-7);
	align-items: end;
}

.page-head__title {
	font-size: var(--fs-h1);
	font-variation-settings: "wdth" 120, "wght" 750;
	text-transform: uppercase;
	line-height: 0.9;
	margin-block: 0.15em 0;
}

.page-head__intro {
	color: var(--fg-soft);
	font-size: var(--fs-lead);
	line-height: 1.45;
	max-width: 42ch;
	padding-bottom: 0.4rem;
}

.page-head__crumbs {
	display: flex;
	gap: 0.5rem;
	align-items: center;
	font-family: var(--font-mono);
	font-size: var(--fs-micro);
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--fg-faint);
	margin-bottom: var(--sp-4);
}

.page-head__crumbs a:hover {
	color: var(--ice);
}

.page-body {
	padding-block: clamp(3rem, 6vw, 6rem);
}

.comments-shell {
	padding-bottom: clamp(3rem, 6vw, 6rem);
}

/* Editorial two column: sticky meta rail beside the prose. */
.editorial {
	display: grid;
	grid-template-columns: minmax(0, 14rem) minmax(0, 1fr);
	gap: clamp(2rem, 6vw, 5rem);
	align-items: start;
	/* Holds the reading column to a sane measure instead of letting it float
	   in the middle of the full shell. */
	max-width: 1120px;
}

.editorial__rail {
	position: sticky;
	top: calc(var(--header-h) + 2.5rem);
	display: flex;
	flex-direction: column;
	gap: var(--sp-5);
	border-left: 1px solid var(--line);
	padding-left: var(--sp-4);
}

.editorial__rail-item {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
}

.editorial__rail-value {
	font-family: var(--font-mono);
	font-size: var(--fs-sm);
	color: var(--fg);
}

.editorial__rail .link {
	align-self: flex-start;
	font-size: var(--fs-sm);
}

/* -------------------------------------------------------------------------
   footer
   ---------------------------------------------------------------------- */

.site-footer {
	position: relative;
	border-top: var(--border);
	background: var(--ink-050);
	overflow: hidden;
}

.site-footer::before {
	content: "";
	position: absolute;
	inset: 0;
	background-image:
		linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
		linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
	background-size: var(--grid-cell) var(--grid-cell);
	-webkit-mask-image: radial-gradient(90% 100% at 50% 100%, #000, transparent 75%);
	mask-image: radial-gradient(90% 100% at 50% 100%, #000, transparent 75%);
	pointer-events: none;
}

.footer-cta {
	position: relative;
	z-index: 1;
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: var(--sp-6);
	align-items: end;
	padding-block: clamp(3.5rem, 7vw, 6.5rem);
	border-bottom: var(--border);
}

.footer-cta__title {
	font-size: clamp(2rem, 1rem + 4.4vw, 4.75rem);
	font-variation-settings: "wdth" 116, "wght" 720;
	text-transform: uppercase;
	line-height: 0.94;
	max-width: 16ch;
}

.footer-cta__title em {
	font-style: normal;
	color: transparent;
	-webkit-text-stroke: 1px var(--ice);
}

.footer-grid {
	position: relative;
	z-index: 1;
	display: grid;
	grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
	gap: var(--sp-6) var(--sp-5);
	padding-block: clamp(2.5rem, 5vw, 4rem);
}

.footer-col__title {
	font-family: var(--font-mono);
	font-size: var(--fs-micro);
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--fg-faint);
	margin-bottom: var(--sp-4);
	padding-bottom: var(--sp-2);
	border-bottom: var(--border);
}

.footer-col ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 0.55rem;
}

.footer-col a {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	color: var(--fg-soft);
	font-size: var(--fs-sm);
	transition: color var(--t-fast) var(--ease), transform var(--t-mid) var(--ease-out);
}

.footer-col a::before {
	content: "";
	width: 0;
	height: 1px;
	background: var(--ice);
	transition: width var(--t-mid) var(--ease-out);
}

.footer-col a:hover,
.footer-col a:focus-visible {
	color: var(--ice);
}

.footer-col a:hover::before {
	width: 12px;
}

.footer-about {
	max-width: 34ch;
}

.footer-about p {
	color: var(--fg-soft);
	font-size: var(--fs-sm);
	margin-top: var(--sp-4);
}

.footer-note {
	margin-top: var(--sp-4);
	font-size: var(--fs-sm);
	color: var(--fg-soft);
}

/* Oversized outlined wordmark closing the page. Two lines so it scales without
   ever being clipped, with the second line stepped in off the left edge. */
.footer-mark {
	position: relative;
	z-index: 1;
	padding-block: clamp(1.5rem, 4vw, 3.5rem) 0;
	line-height: 0.8;
}

.footer-mark__word {
	display: block;
	font-family: var(--font-display);
	font-variation-settings: "wdth" 125, "wght" 800;
	font-size: clamp(2.5rem, 17vw, 15rem);
	letter-spacing: -0.05em;
	text-transform: uppercase;
	color: transparent;
	-webkit-text-stroke: 1px var(--line-strong);
	white-space: nowrap;
	transition: -webkit-text-stroke-color var(--t-slow) var(--ease);
}

.footer-mark__word--indent {
	margin-left: clamp(0.75rem, 6vw, 6rem);
	display: flex;
	align-items: center;
	gap: clamp(0.6rem, 3vw, 3rem);
}

/* A single lit pixel closing the wordmark. */
.footer-mark__word--indent i {
	width: clamp(0.75rem, 2.4vw, 2rem);
	height: clamp(0.75rem, 2.4vw, 2rem);
	background: var(--ice);
	flex: none;
	opacity: 0.35;
	transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease-out);
}

.footer-mark:hover .footer-mark__word {
	-webkit-text-stroke-color: var(--ice-dim);
}

.footer-mark:hover .footer-mark__word--indent i {
	opacity: 1;
	transform: rotate(45deg);
}

.footer-legal {
	position: relative;
	z-index: 1;
	display: flex;
	flex-wrap: wrap;
	gap: var(--sp-3) var(--sp-5);
	align-items: center;
	justify-content: space-between;
	padding-block: var(--sp-5);
	border-top: var(--border);
	font-family: var(--font-mono);
	font-size: var(--fs-micro);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--fg-faint);
}

.footer-legal__group {
	display: flex;
	flex-wrap: wrap;
	gap: var(--sp-2) var(--sp-4);
	align-items: center;
}

.footer-legal a:hover {
	color: var(--ice);
}

.clock {
	font-variant-numeric: tabular-nums;
	color: var(--fg-soft);
}

/* -------------------------------------------------------------------------
   responsive
   ---------------------------------------------------------------------- */

@media (max-width: 1180px) {
	.footer-grid {
		grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
	}

	.footer-about {
		grid-column: 1 / -1;
		max-width: 46ch;
	}
}

@media (max-width: 1024px) {
	.nav-desktop {
		display: none;
	}

	.nav-toggle {
		display: grid;
	}

	.editorial {
		grid-template-columns: minmax(0, 1fr);
	}

	.editorial__rail {
		position: static;
		flex-direction: row;
		flex-wrap: wrap;
		gap: var(--sp-5);
		border-left: 0;
		border-top: 1px solid var(--line);
		padding-left: 0;
		padding-top: var(--sp-4);
		order: 2;
	}

	.editorial__body {
		order: 1;
	}
}

@media (max-width: 900px) {
	.page-head__inner {
		grid-template-columns: minmax(0, 1fr);
		align-items: start;
	}

	.footer-cta {
		grid-template-columns: minmax(0, 1fr);
		align-items: start;
	}
}

@media (max-width: 640px) {
	.header-cta {
		display: none;
	}

	.brand__meta {
		display: none;
	}

	.footer-grid {
		grid-template-columns: minmax(0, 1fr);
	}

	.footer-legal {
		flex-direction: column;
		align-items: flex-start;
	}
}

@media (max-width: 380px) {
	.brand__name {
		font-size: 0.95rem;
	}
}