/*
Theme Name: Physical Lab
Description: Audio engineering lab — dark technical block theme.
Version: 2.0.0
Author: Physical Lab Team
Text Domain: physical-lab
Requires at least: 6.4
Tested up to: 6.5
Requires PHP: 7.4
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/

/* ----------------------------------------------------
   Tokens (mirror theme.json — used in places block CSS
   doesn't reach: pseudo-elements, custom selectors).
---------------------------------------------------- */
:root {
	--c-bg:        #0b0d10;
	--c-surface:   #14181d;
	--c-surface-2: #1a2027;
	--c-hairline:  #1f262d;
	--c-text:      #e8ecef;
	--c-muted:     #8b96a0;
	--c-accent:    #5af2c4;
	--c-accent-alt:#4cc9ff;

	--ff-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	--ff-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

	--radius-sm: 6px;
	--radius-md: 10px;
	--radius-lg: 18px;

	--ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ----------------------------------------------------
   Base
---------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
	margin: 0;
	font-family: var(--ff-sans);
	font-feature-settings: "ss01", "cv11", "tnum";
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	background: var(--c-bg);
	color: var(--c-text);
	line-height: 1.6;
	overflow-x: hidden;
}

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

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

a { color: var(--c-accent); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--c-accent-alt); }

a:focus-visible, button:focus-visible {
	outline: 2px solid var(--c-accent);
	outline-offset: 3px;
	border-radius: 4px;
}

.mono { font-family: var(--ff-mono); letter-spacing: 0.06em; }

/* Subtle background grid layer applied to body */
body::before {
	content: "";
	position: fixed;
	inset: 0;
	pointer-events: none;
	z-index: 0;
	background-image:
		linear-gradient(transparent 95%, rgba(255,255,255,0.022) 95%),
		linear-gradient(90deg, transparent 95%, rgba(255,255,255,0.022) 95%);
	background-size: 60px 60px, 60px 60px;
	mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 80%);
	-webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 80%);
}

main, header.site-header, footer.site-footer { position: relative; z-index: 1; }

/* ----------------------------------------------------
   Eyebrow & section heads
---------------------------------------------------- */
.eyebrow {
	font-family: var(--ff-mono);
	font-size: 0.75rem;
	letter-spacing: 0.18em;
	color: var(--c-muted);
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	margin: 0 0 1.5rem;
	text-transform: uppercase;
}
.eyebrow__num { color: var(--c-accent); }
.eyebrow__sep { color: var(--c-hairline); }

.section-head { max-width: 760px; margin: 0 auto 4rem; text-align: center; padding: 0 1.5rem; }
.section-head h2 {
	font-size: clamp(2rem, 4vw, 3.25rem);
	font-weight: 600;
	letter-spacing: -0.02em;
	line-height: 1.05;
	margin: 0 0 1rem;
}
.section-head__lede { color: var(--c-muted); font-size: 1.0625rem; line-height: 1.65; max-width: 60ch; margin: 0 auto; }

.section-head--row {
	max-width: 1240px;
	margin: 0 auto 3rem;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2rem;
	text-align: left;
	align-items: end;
}
.section-head--row .eyebrow { justify-content: flex-start; }
.section-head__lede--right { text-align: left; max-width: 42ch; justify-self: end; }
@media (max-width: 860px) {
	.section-head--row { grid-template-columns: 1fr; }
	.section-head__lede--right { justify-self: start; }
}

/* ----------------------------------------------------
   Buttons
---------------------------------------------------- */
.btn {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	padding: 0.85rem 1.4rem;
	font-family: var(--ff-mono);
	font-size: 0.78rem;
	font-weight: 500;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	border: 1px solid var(--c-hairline);
	border-radius: 999px;
	color: var(--c-text);
	background: transparent;
	transition: all .25s var(--ease);
	cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
	background: var(--c-accent);
	color: var(--c-bg);
	border-color: var(--c-accent);
}
.btn--primary:hover { background: var(--c-accent-alt); border-color: var(--c-accent-alt); color: var(--c-bg); }
.btn--ghost { color: var(--c-text); border-color: var(--c-hairline); }
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn--lg { padding: 1.1rem 1.8rem; font-size: 0.85rem; }

/* ----------------------------------------------------
   Header
---------------------------------------------------- */
.site-header {
	position: sticky;
	top: 0;
	z-index: 50;
	padding: 0 !important;
	background: rgba(11, 13, 16, 0.65);
	backdrop-filter: saturate(140%) blur(14px);
	-webkit-backdrop-filter: saturate(140%) blur(14px);
	border-bottom: 1px solid transparent;
	transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled {
	background: rgba(11, 13, 16, 0.92);
	border-bottom-color: var(--c-hairline);
}
.site-header__inner {
	max-width: 1240px;
	margin: 0 auto;
	padding: 0.95rem 1.5rem;
	display: flex;
	align-items: center;
	gap: 1.5rem;
}
.site-header__brand { flex: 0 0 auto; }
.site-header__logo {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	color: var(--c-text);
	font-family: var(--ff-mono);
	font-size: 0.8rem;
	letter-spacing: 0.18em;
	font-weight: 500;
}
.site-header__logo:hover { color: var(--c-accent); }
.site-header__mark { color: var(--c-accent); }

.site-header__nav {
	margin-left: 2rem;
	display: flex;
	gap: 1.75rem;
	flex: 1;
}
.site-header__nav a {
	color: var(--c-muted);
	font-size: 0.875rem;
	font-weight: 500;
	letter-spacing: 0.02em;
	position: relative;
	padding: 0.25rem 0;
}
.site-header__nav a:hover { color: var(--c-text); }
.site-header__nav a::after {
	content: "";
	position: absolute;
	left: 0; right: 0; bottom: -2px;
	height: 1px;
	background: var(--c-accent);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform .3s var(--ease);
}
.site-header__nav a:hover::after { transform: scaleX(1); }

.site-header__cta {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.6rem 1rem;
	border: 1px solid var(--c-hairline);
	border-radius: 999px;
	font-family: var(--ff-mono);
	font-size: 0.72rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--c-text);
	transition: all .25s var(--ease);
}
.site-header__cta:hover { border-color: var(--c-accent); color: var(--c-accent); }

.site-header__burger {
	display: none;
	background: transparent;
	border: 1px solid var(--c-hairline);
	border-radius: 8px;
	padding: 0.5rem;
	width: 38px; height: 38px;
	flex-direction: column;
	gap: 4px;
	cursor: pointer;
	align-items: center;
	justify-content: center;
}
.site-header__burger span {
	width: 18px; height: 1.5px; background: var(--c-text); display: block;
	transition: transform .25s var(--ease), opacity .2s;
}
.site-header__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.site-header__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

@media (max-width: 860px) {
	.site-header__nav, .site-header__cta { display: none; }
	.site-header__burger { display: inline-flex; margin-left: auto; }
	.site-header.is-open .site-header__nav {
		display: flex;
		position: absolute;
		top: 100%; left: 0; right: 0;
		flex-direction: column;
		gap: 0;
		background: var(--c-bg);
		border-top: 1px solid var(--c-hairline);
		border-bottom: 1px solid var(--c-hairline);
		padding: 1rem 1.5rem 1.5rem;
		margin: 0;
	}
	.site-header.is-open .site-header__nav a { padding: 0.85rem 0; border-bottom: 1px solid var(--c-hairline); }
	.site-header.is-open .site-header__nav a:last-child { border-bottom: 0; }
}

/* ----------------------------------------------------
   Hero
---------------------------------------------------- */
.hero {
	position: relative;
	padding: 6rem 1.5rem 5rem;
	overflow: hidden;
	min-height: 92vh;
	display: flex;
	align-items: center;
}
.hero__grid {
	position: absolute; inset: 0;
	background-image:
		radial-gradient(ellipse 80% 60% at 70% 30%, rgba(90,242,196,0.08), transparent 60%),
		radial-gradient(ellipse 60% 50% at 20% 80%, rgba(76,201,255,0.06), transparent 60%);
	pointer-events: none;
}
.hero__inner {
	position: relative;
	max-width: 1240px;
	margin: 0 auto;
	width: 100%;
	display: grid;
	grid-template-columns: 1.1fr 1fr;
	gap: 4rem;
	align-items: center;
}
@media (max-width: 1024px) {
	.hero__inner { grid-template-columns: 1fr; gap: 3rem; }
}
.hero__title {
	font-size: clamp(2.5rem, 6.5vw, 5.25rem);
	font-weight: 700;
	line-height: 0.98;
	letter-spacing: -0.035em;
	margin: 0 0 1.75rem;
}
.hero__title-accent {
	background: linear-gradient(90deg, var(--c-accent), var(--c-accent-alt));
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	color: transparent;
}
.hero__lede {
	font-size: 1.125rem;
	line-height: 1.65;
	color: var(--c-muted);
	max-width: 52ch;
	margin: 0 0 2.25rem;
}
.hero__actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 3rem; }
.hero__stats {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 1rem;
	max-width: 480px;
	margin: 0;
	padding-top: 1.5rem;
	border-top: 1px solid var(--c-hairline);
}
.hero__stats > div { margin: 0; }
.hero__stats dt {
	font-family: var(--ff-mono);
	font-size: 0.7rem;
	letter-spacing: 0.16em;
	color: var(--c-muted);
	text-transform: uppercase;
	margin: 0 0 0.4rem;
}
.hero__stats dd {
	margin: 0;
	font-size: 1.5rem;
	font-weight: 600;
	letter-spacing: -0.02em;
}

/* Oscilloscope visual */
.hero__visual { position: relative; }
.scope {
	background: var(--c-surface);
	border: 1px solid var(--c-hairline);
	border-radius: var(--radius-md);
	overflow: hidden;
	box-shadow:
		0 30px 60px -20px rgba(0,0,0,0.6),
		inset 0 1px 0 rgba(255,255,255,0.04);
}
.scope__chrome {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.7rem 0.9rem;
	border-bottom: 1px solid var(--c-hairline);
	background: var(--c-surface-2);
}
.scope__dot { width: 9px; height: 9px; border-radius: 50%; background: #2a3138; }
.scope__dot:first-child { background: #ff6b6b; }
.scope__dot:nth-child(2) { background: #f5c451; }
.scope__dot:nth-child(3) { background: #5af2c4; }
.scope__label {
	margin-left: auto;
	font-family: var(--ff-mono);
	font-size: 0.7rem;
	letter-spacing: 0.12em;
	color: var(--c-muted);
}
.scope__svg {
	width: 100%;
	height: auto;
	aspect-ratio: 600/320;
	display: block;
}
.scope__wave {
	stroke-dasharray: 1600;
	stroke-dashoffset: 1600;
	animation: scope-draw 2.4s var(--ease) forwards, scope-pulse 5s ease-in-out 2.4s infinite;
}
.scope__wave--ghost { animation-delay: .6s, 3s; opacity: 0.4; }

@keyframes scope-draw { to { stroke-dashoffset: 0; } }
@keyframes scope-pulse {
	0%, 100% { transform: scaleY(1); }
	50%      { transform: scaleY(1.04); }
}
.scope__svg { transform-origin: center; transform-box: fill-box; }

.scope__readout {
	display: flex;
	gap: 1.5rem;
	flex-wrap: wrap;
	padding: 0.8rem 0.9rem;
	border-top: 1px solid var(--c-hairline);
	background: var(--c-surface-2);
	font-family: var(--ff-mono);
	font-size: 0.72rem;
	letter-spacing: 0.1em;
	color: var(--c-muted);
}
.scope__readout span:first-child { color: var(--c-accent); }

.hero__chip {
	position: absolute;
	top: -14px; right: 1.25rem;
	padding: 0.45rem 0.8rem;
	background: var(--c-bg);
	border: 1px solid var(--c-accent);
	border-radius: 999px;
	font-family: var(--ff-mono);
	font-size: 0.68rem;
	letter-spacing: 0.16em;
	color: var(--c-accent);
}
.hero__chip::before {
	content: "";
	display: inline-block;
	width: 6px; height: 6px;
	border-radius: 50%;
	background: var(--c-accent);
	margin-right: 0.5rem;
	box-shadow: 0 0 8px var(--c-accent);
	animation: blink 1.6s ease-in-out infinite;
	vertical-align: middle;
}
@keyframes blink { 50% { opacity: 0.25; } }

.hero__scrollcue {
	position: absolute;
	bottom: 1.5rem; left: 50%;
	transform: translateX(-50%);
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.65rem;
	letter-spacing: 0.2em;
	color: var(--c-muted);
}
@media (max-width: 1024px) { .hero__scrollcue { display: none; } }

/* ----------------------------------------------------
   Marquee
---------------------------------------------------- */
.marquee {
	border-block: 1px solid var(--c-hairline);
	overflow: hidden;
	padding: 1.1rem 0;
	background: var(--c-surface);
	mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
	-webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee__track {
	display: inline-flex;
	gap: 2rem;
	white-space: nowrap;
	animation: marquee 38s linear infinite;
	font-family: var(--ff-mono);
	font-size: 0.78rem;
	letter-spacing: 0.18em;
	color: var(--c-muted);
}
.marquee__track > span { flex: 0 0 auto; }
.marquee__track > span:nth-child(odd) { color: var(--c-text); }
@keyframes marquee {
	from { transform: translateX(0); }
	to   { transform: translateX(-50%); }
}

/* ----------------------------------------------------
   Services
---------------------------------------------------- */
.services {
	padding: 7rem 1.5rem;
	max-width: 1240px;
	margin: 0 auto;
}
.services__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1px;
	background: var(--c-hairline);
	border: 1px solid var(--c-hairline);
	border-radius: var(--radius-lg);
	overflow: hidden;
}
@media (max-width: 900px) { .services__grid { grid-template-columns: 1fr; } }

.service-card {
	background: var(--c-surface);
	padding: 2.5rem;
	min-height: 320px;
	display: flex;
	flex-direction: column;
	gap: 1rem;
	transition: background .3s var(--ease);
	position: relative;
}
.service-card:hover { background: var(--c-surface-2); }
.service-card::after {
	content: "";
	position: absolute;
	left: 0; top: 0;
	width: 0; height: 1px;
	background: var(--c-accent);
	transition: width .4s var(--ease);
}
.service-card:hover::after { width: 100%; }

.service-card__head {
	display: flex;
	justify-content: space-between;
	align-items: flex-start;
	margin-bottom: 1.5rem;
}
.service-card__num {
	font-size: 0.72rem;
	letter-spacing: 0.18em;
	color: var(--c-muted);
}
.service-card__icon { color: var(--c-accent); }
.service-card h3 {
	font-size: 1.5rem;
	font-weight: 600;
	letter-spacing: -0.01em;
	margin: 0;
}
.service-card p {
	color: var(--c-muted);
	margin: 0;
	flex-grow: 1;
}
.service-card__tags {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	font-size: 0.68rem;
	letter-spacing: 0.14em;
}
.service-card__tags li {
	padding: 0.3rem 0.6rem;
	border: 1px solid var(--c-hairline);
	border-radius: 999px;
	color: var(--c-muted);
}

/* Reveal */
[data-reveal] {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ----------------------------------------------------
   Showcase / carousel — mostly in showcase.css for scoping,
   but spacing lives here so the section breathes correctly
   even before that stylesheet loads.
---------------------------------------------------- */
.showcase { padding: 7rem 1.5rem; }
.process { padding: 7rem 1.5rem; }

/* ----------------------------------------------------
   Process
---------------------------------------------------- */
.process__inner {
	max-width: 1240px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: 1.1fr 1fr;
	gap: 4rem;
	align-items: center;
	padding: 4rem;
	background: var(--c-surface);
	border: 1px solid var(--c-hairline);
	border-radius: var(--radius-lg);
	position: relative;
	overflow: hidden;
}
.process__inner::before {
	content: "";
	position: absolute;
	top: 0; left: 0; right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
	opacity: 0.6;
}
@media (max-width: 900px) {
	.process__inner { grid-template-columns: 1fr; padding: 2.25rem; gap: 2.5rem; }
}
.process__copy h2 {
	font-size: clamp(1.75rem, 3vw, 2.5rem);
	margin: 0 0 1.25rem;
	letter-spacing: -0.02em;
}
.process__copy p {
	color: var(--c-muted);
	margin: 0 0 2rem;
	max-width: 50ch;
}
.process__stats {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2rem 1.5rem;
	margin: 0;
}
.process__stats > div { margin: 0; padding-left: 1rem; border-left: 1px solid var(--c-hairline); }
.process__stats dt {
	font-size: 0.68rem;
	letter-spacing: 0.16em;
	color: var(--c-muted);
	margin: 0 0 0.5rem;
	text-transform: uppercase;
}
.process__stats dd {
	margin: 0;
	font-size: 2.5rem;
	font-weight: 600;
	letter-spacing: -0.03em;
	color: var(--c-text);
}
.process__stats dd span { color: var(--c-accent); }

/* ----------------------------------------------------
   Contact
---------------------------------------------------- */
.contact { padding: 7rem 1.5rem 9rem; }
.contact__frame {
	max-width: 880px;
	margin: 0 auto;
	padding: 4.5rem 2.5rem;
	text-align: center;
	border: 1px solid var(--c-hairline);
	border-radius: var(--radius-lg);
	background:
		radial-gradient(ellipse 70% 100% at 50% 0%, rgba(90,242,196,0.08), transparent 70%),
		var(--c-surface);
	position: relative;
}
.contact__frame::after {
	content: "";
	position: absolute;
	inset: -1px;
	border-radius: var(--radius-lg);
	padding: 1px;
	background: linear-gradient(135deg, transparent 30%, rgba(90,242,196,0.4) 50%, transparent 70%);
	-webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
	-webkit-mask-composite: xor;
	mask-composite: exclude;
	pointer-events: none;
}
.contact__frame .eyebrow { justify-content: center; }
.contact__frame h2 {
	font-size: clamp(2rem, 4.5vw, 3.25rem);
	letter-spacing: -0.02em;
	line-height: 1.1;
	margin: 0 0 1.25rem;
}
.contact__accent {
	background: linear-gradient(90deg, var(--c-accent), var(--c-accent-alt));
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
}
.contact__lede { color: var(--c-muted); font-size: 1.0625rem; margin: 0 auto 2.5rem; max-width: 56ch; }
.contact__actions {
	display: flex;
	gap: 1.25rem;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
}
.contact__mailto { font-size: 0.85rem; letter-spacing: 0.1em; color: var(--c-muted); }
.contact__mailto:hover { color: var(--c-accent); }

/* ----------------------------------------------------
   Footer
---------------------------------------------------- */
.site-footer {
	padding: 0 !important;
	border-top: 1px solid var(--c-hairline);
	background: var(--c-bg);
}
.site-footer__inner {
	max-width: 1240px;
	margin: 0 auto;
	padding: 4rem 1.5rem 2.5rem;
	display: grid;
	grid-template-columns: 1.6fr repeat(3, 1fr);
	gap: 3rem;
}
@media (max-width: 800px) { .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 2.5rem 1.5rem; } }
@media (max-width: 480px) { .site-footer__inner { grid-template-columns: 1fr; } }

.site-footer__brand {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	color: var(--c-text);
	font-family: var(--ff-mono);
	font-size: 0.8rem;
	letter-spacing: 0.18em;
}
.site-footer__brand svg { color: var(--c-accent); }
.site-footer__tag { color: var(--c-muted); margin: 1rem 0 0; max-width: 36ch; }
.site-footer__heading {
	font-family: var(--ff-mono);
	font-size: 0.7rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--c-muted);
	margin: 0 0 1rem;
	font-weight: 500;
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.55rem; }
.site-footer__col a { color: var(--c-text); }
.site-footer__col a:hover { color: var(--c-accent); }
.site-footer__addr { color: var(--c-muted); font-size: 0.875rem; }
.site-footer__base {
	max-width: 1240px;
	margin: 0 auto;
	padding: 1.5rem;
	border-top: 1px solid var(--c-hairline);
	display: flex;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 0.75rem;
	font-size: 0.7rem;
	letter-spacing: 0.16em;
	color: var(--c-muted);
}

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