/*
 * Hydrocord Site — base styles.
 *
 * Palette derived from the real logo (theme/assets/images/logo/): deep
 * indigo #2B3E99 and sky blue #1B83C6 are the two logotype colors; the
 * light tints below (--color-aqua, --color-surface*) come from the
 * logo's own "negative" (light-on-dark) variant.
 */

:root {
	--color-ink: #10163a;
	--color-ocean-deep: #2b3e99;
	--color-ocean: #1b83c6;
	--color-aqua: #78c4f6;
	--color-surface: #f7f8fd;
	--color-surface-alt: #edeffb;
	--color-border: #d7dbf2;
	--color-on-dark: #f5f7ff;

	--font-heading: 'Space Grotesk', 'Trebuchet MS', sans-serif;
	--font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

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

body {
	margin: 0;
	background: var(--color-surface);
	color: var(--color-ink);
	font-family: var(--font-body);
	font-size: 1rem;
	line-height: 1.6;
}

h1,
h2,
h3,
h4 {
	font-family: var(--font-heading);
	line-height: 1.2;
	margin: 0 0 0.5em;
}

h1 {
	font-size: 2rem;
	font-weight: 700;
}

h2 {
	font-size: 1.75rem;
	font-weight: 600;
}

h3 {
	font-size: 1.25rem;
	font-weight: 600;
}

h4 {
	font-size: 1rem;
	font-weight: 600;
}

p {
	margin: 0 0 1em;
}

a {
	color: var(--color-ocean);
}

a:hover,
a:focus {
	color: var(--color-aqua);
}

.placeholder {
	color: #8a97a0;
	font-style: italic;
}

/* Layout ------------------------------------------------------------- */

.container {
	max-width: 72rem;
	margin-inline: auto;
	padding-inline: 1.25rem;
}

@media (min-width: 48rem) {
	.container {
		padding-inline: 2.5rem;
	}
}

/* Header --------------------------------------------------------------- */

.site-header {
	position: sticky;
	top: 0;
	z-index: 10;
	background: var(--color-ocean-deep);
	color: var(--color-on-dark);
}

.site-header__inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem 1.5rem;
	padding-block: 1rem;
}

.site-header__brand {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
}

.site-logo {
	display: block;
	height: 4.375rem; /* 2.5x the original 1.75rem, per explicit request */
	width: auto;
}

.site-tagline {
	margin: 0;
	font-size: 0.875rem;
	color: var(--color-aqua);
}

.site-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem 1.25rem;
}

.site-nav a {
	color: var(--color-on-dark);
	text-decoration: none;
	font-weight: 500;
	font-size: 0.9375rem;
}

.site-nav a:hover,
.site-nav a:focus {
	color: var(--color-aqua);
}

/* Sections --------------------------------------------------------------- */

.section {
	padding-block: 3.5rem;
	scroll-margin-top: 4.5rem;
}

@media (min-width: 48rem) {
	.section {
		padding-block: 5rem;
	}
}

.section--company {
	position: relative;
	background-color: var(--color-ink);
	background-size: cover;
	background-position: center;
	color: var(--color-on-dark);
}

.section--company::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(100deg, rgba(16, 22, 58, 0.88) 0%, rgba(16, 22, 58, 0.6) 55%, rgba(16, 22, 58, 0.35) 100%);
}

.section--company .container {
	position: relative;
}

.section--company h2 {
	color: var(--color-on-dark);
}

.section--floater {
	background: var(--color-surface-alt);
}

.section--applications {
	background: var(--color-surface);
}

.section--video {
	background: var(--color-surface-alt);
}

.section--contact {
	background: var(--color-ocean-deep);
	color: var(--color-on-dark);
	text-align: center;
}

.section--contact h2 {
	color: var(--color-on-dark);
}

.company-vision {
	max-width: 42rem;
	font-size: 1.125rem;
}

/* Product ------------------------------------------------------------ */

.product {
	margin-block-start: 1.5rem;
}

.product-intro {
	font-size: 1.0625rem;
	margin-block-end: 2rem;
}

.specs-group {
	background: #fff;
	border: 1px solid var(--color-border);
	border-radius: 0.5rem;
	padding: 1.25rem 1.5rem;
}

.specs-group h3 {
	color: var(--color-ocean);
	margin-bottom: 0.75rem;
	font-size: 1.0625rem;
}

.specs-group ul {
	margin: 0;
	padding-inline-start: 1.1rem;
}

.specs-group li {
	margin-block-end: 0.4rem;
}

/* Hero row: product photo beside Physical/Sensing specs */

.product-hero-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
	align-items: stretch;
}

@media (min-width: 40rem) {
	.product-hero-row {
		grid-template-columns: minmax(200px, 400px) 1fr;
	}
}

.product-hero-image {
	display: flex;
	align-items: center;
	justify-content: center;
}

.product-hero-image img {
	display: block;
	width: auto;
	max-width: 100%;
	height: auto;
	max-height: 100%;
	object-fit: contain;
	border-radius: 0.5rem;
	margin-inline: auto;
}

.product-hero-specs {
	display: grid;
	gap: 1.25rem;
}

/* Applications: 5 rows, each pairing a title+body with one graph/photo */

.applications-list {
	display: grid;
	gap: 1.25rem;
}

.application-row {
	display: grid;
	grid-template-columns: 1fr;
	align-items: center;
	background: #fff;
	border: 1px solid var(--color-border);
	border-radius: 0.5rem;
	overflow: hidden;
}

@media (min-width: 40rem) {
	.application-row {
		grid-template-columns: 1fr 1fr;
	}
}

.application-text {
	padding: 1.5rem;
}

.application-text h4 {
	color: var(--color-ocean);
	font-size: 1.1875rem;
	margin: 0 0 0.5rem;
}

.application-text p {
	margin: 0;
	font-size: 1.0625rem;
}

.application-text ul {
	margin: 0;
	padding-inline-start: 1.1rem;
	font-size: 1.0625rem;
}

.application-text li {
	margin-block-end: 0.4rem;
}

.application-image {
	aspect-ratio: 16 / 10;
	background: var(--color-surface-alt);
	overflow: hidden;
}

.application-image--contain {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 0.75rem;
}

.application-image--contain img {
	display: block;
	max-width: 100%;
	max-height: 100%;
	width: auto;
	height: auto;
	object-fit: contain;
}

.application-image--cover img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

/* Usability row: specs beside the configure-app photo */

.product-usability-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
	align-items: stretch;
	margin-block-start: 2.5rem;
}

@media (min-width: 40rem) {
	.product-usability-row {
		grid-template-columns: 1fr minmax(200px, 416px); /* image widened 30% from 320px */
	}
}

.product-usability-row .specs-group--usability {
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.product-usability-image {
	display: flex;
	align-items: center;
	justify-content: center;
}

.product-usability-image img {
	display: block;
	width: 100%;
	height: auto;
	max-height: 100%;
	object-fit: contain;
	border-radius: 0.5rem;
}

/* Video ---------------------------------------------------------------- */

.video-wrapper {
	position: relative;
	width: 100%;
	aspect-ratio: 16 / 9;
	background: #000;
	border-radius: 0.5rem;
	overflow: hidden;
}

.video-wrapper iframe {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	border: 0;
}

.video-facade {
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: var(--color-ocean-deep);
	background-image: url('../images/video-thumbnail.webp');
	background-size: cover;
	background-position: center;
	cursor: pointer;
}

.video-facade__play {
	display: block;
	width: 4.5rem;
	height: 4.5rem;
	border-radius: 50%;
	background: var(--color-aqua);
	position: relative;
	box-shadow: 0 0.25rem 1rem rgba(16, 22, 58, 0.45);
	transition: background 0.15s ease;
}

.video-facade__play::before {
	content: '';
	position: absolute;
	top: 50%;
	left: 55%;
	transform: translate(-50%, -50%);
	border-style: solid;
	border-width: 0.9rem 0 0.9rem 1.5rem;
	border-color: transparent transparent transparent var(--color-ink);
}

.video-facade:hover .video-facade__play,
.video-facade:focus-visible .video-facade__play {
	background: #fff;
}

/* Contact ---------------------------------------------------------------- */

.contact-email {
	display: inline-block;
	margin-block-start: 0.5rem;
	padding: 0.75rem 1.75rem;
	background: var(--color-aqua);
	color: var(--color-ink);
	border-radius: 999px;
	text-decoration: none;
	font-weight: 600;
}

.contact-email:hover,
.contact-email:focus {
	background: #fff;
	color: var(--color-ink);
}

/* Footer ----------------------------------------------------------------- */

.site-footer {
	background: var(--color-ink);
	color: var(--color-on-dark);
}

.site-footer .container {
	padding-block: 1.5rem;
}

.site-footer p {
	margin: 0;
	font-size: 0.875rem;
	opacity: 0.75;
}