/* ===== NVIDIA-Inspired Design: Light & Clean ===== */

/* Reset & Base */
*,
*::before,
*::after {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

:root {
	/* NVIDIA Color System */
	--nvidia-green: #76b900;
	--nvidia-green-dark: #5a8d00;
	--nvidia-green-pale: #bff230;
	
	--black: #000000;
	--white: #ffffff;
	--canvas: #ffffff;
	--surface-soft: #f5f5f5;
	--surface-gray: #e8e8e8;
	
	--text-black: #000000;
	--text-dark: #1a1a1a;
	--text-gray: #666666;
	--text-light: #a7a7a7;
	
	--hairline: #e0e0e0;
	--border: #5e5e5e;
	
	--link-blue: #3860be;
	--link-hover: #1eaedb;
	
	/* Typography */
	--font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
	
	/* Spacing (8px base) */
	--space-1: 8px;
	--space-2: 16px;
	--space-3: 24px;
	--space-4: 32px;
	--space-5: 40px;
	--space-6: 48px;
	--space-8: 64px;
	--space-10: 80px;
	
	/* Radius - NVIDIA uses minimal 2px */
	--radius: 2px;
	
	--container: 1200px;
}

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font-family);
	font-size: 16px;
	line-height: 1.67;
	color: var(--text-dark);
	background: var(--canvas);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

.container {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 var(--space-3);
}

/* ===== Header ===== */
.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	background: var(--black);
	border-bottom: 1px solid var(--border);
}

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 72px;
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 var(--space-3);
}

.logo {
	font-size: 20px;
	font-weight: 700;
	color: var(--white);
	text-decoration: none;
	letter-spacing: -0.02em;
	display: inline-flex;
	align-items: center;
	gap: 10px;
}

.logo-mark {
	width: 30px;
	height: 30px;
	border-radius: 6px;
	display: block;
}

.site-nav {
	display: flex;
	gap: var(--space-4);
}

.site-nav a {
	font-size: 14px;
	font-weight: 700;
	color: var(--white);
	text-decoration: none;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	transition: color 0.2s;
}

.site-nav a:hover {
	color: var(--link-blue);
}

.cta-phone {
	font-size: 14px;
	font-weight: 700;
	color: var(--white);
	text-decoration: none;
	padding: 11px 13px;
	border: 2px solid var(--nvidia-green);
	border-radius: var(--radius);
	background: transparent;
	transition: all 0.2s;
}

.cta-phone:hover {
	background: var(--link-hover);
	border-color: var(--link-hover);
}

/* ===== Hero Section - Dark Chapter with Tech Visual ===== */
.hero {
	position: relative;
	min-height: 640px;
	display: flex;
	align-items: center;
	background: var(--black);
	margin-top: 72px;
	overflow: hidden;
}

.hero-bg {
	position: absolute;
	inset: 0;
	z-index: 0;
}

.hero-bg img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: right center;
	opacity: 0.85;
}

.hero-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(90deg, rgba(0,0,0,0.96) 0%, rgba(0,0,0,0.86) 38%, rgba(0,0,0,0.45) 70%, rgba(0,0,0,0.12) 100%);
	z-index: 1;
}

.hero-content {
	position: relative;
	z-index: 2;
	text-align: left;
	padding: var(--space-10) 0;
	width: 100%;
}

.hero-text {
	max-width: 720px;
}

.hero-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	font-size: 13px;
	font-weight: 700;
	color: var(--nvidia-green);
	text-transform: uppercase;
	letter-spacing: 0.18em;
	margin-bottom: var(--space-3);
}

.hero-eyebrow::before {
	content: "";
	width: 12px;
	height: 12px;
	background: var(--nvidia-green);
	display: block;
}

.hero-text h1 {
	margin-bottom: var(--space-3);
}

.hero-main {
	display: block;
	font-size: clamp(38px, 5.2vw, 62px);
	font-weight: 700;
	line-height: 1.18;
	color: var(--white);
	letter-spacing: -0.02em;
}

.hero-main em {
	font-style: normal;
	color: var(--nvidia-green);
}

.hero-lead {
	font-size: clamp(16px, 1.8vw, 19px);
	line-height: 1.7;
	color: var(--text-light);
	margin-bottom: var(--space-4);
	max-width: 560px;
}

.hero-actions {
	display: flex;
	gap: var(--space-2);
	justify-content: flex-start;
	align-items: center;
	flex-wrap: wrap;
}

.hero-facts {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-4);
	margin-top: var(--space-5);
	padding-top: var(--space-3);
	border-top: 1px solid rgba(255,255,255,0.18);
}

.hero-fact {
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.hero-fact span {
	font-size: 12px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	color: var(--nvidia-green);
}

.hero-fact strong {
	font-size: clamp(20px, 2.4vw, 26px);
	font-weight: 700;
	color: var(--white);
	letter-spacing: -0.01em;
}

/* ===== Buttons ===== */
.btn {
	display: inline-block;
	font-size: 16px;
	font-weight: 700;
	text-decoration: none;
	padding: 11px 24px;
	border-radius: var(--radius);
	transition: all 0.2s;
	cursor: pointer;
	border: 2px solid transparent;
}

.btn-primary {
	background: var(--nvidia-green);
	color: var(--black);
	border-color: var(--nvidia-green);
}

.btn-primary:hover {
	background: var(--nvidia-green-pale);
	border-color: var(--nvidia-green-pale);
}

.btn-ghost {
	background: transparent;
	color: var(--white);
	border-color: rgba(255,255,255,0.5);
}

.btn-ghost:hover {
	background: var(--white);
	color: var(--black);
	border-color: var(--white);
}

.scroll-hint {
	position: absolute;
	bottom: var(--space-3);
	left: 50%;
	transform: translateX(-50%);
	font-size: 12px;
	color: var(--text-light);
	text-transform: uppercase;
	letter-spacing: 0.1em;
	z-index: 2;
}

/* ===== Screen Reader Only ===== */
.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

/* ===== Section Common ===== */
.section {
	padding: var(--space-10) 0;
}

.section-header {
	text-align: center;
	margin-bottom: var(--space-6);
}

.section-header.left {
	text-align: left;
}

.section-tag {
	display: inline-block;
	font-size: 14px;
	font-weight: 700;
	color: var(--nvidia-green);
	text-transform: uppercase;
	letter-spacing: 0.15em;
	margin-bottom: var(--space-2);
}

.section-header h2 {
	font-size: clamp(28px, 4vw, 42px);
	font-weight: 700;
	line-height: 1.25;
	color: var(--text-black);
	margin-bottom: var(--space-2);
}

/* ===== Services Section ===== */
.services-section {
	background: var(--canvas);
}

.services-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--space-3);
}

.service-card {
	background: var(--white);
	border: 1px solid var(--hairline);
	border-radius: var(--radius);
	padding: var(--space-4);
	transition: all 0.2s;
	position: relative;
}

.service-card:hover {
	border-color: var(--nvidia-green);
	box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 16px;
}

.service-icon {
	width: 80px;
	height: 80px;
	margin-bottom: var(--space-3);
	border-radius: var(--radius);
	overflow: hidden;
}

.service-icon img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.service-num {
	position: absolute;
	top: var(--space-2);
	right: var(--space-2);
	font-size: 48px;
	font-weight: 900;
	color: var(--surface-gray);
	line-height: 1;
}

.service-card h3 {
	font-size: 20px;
	font-weight: 700;
	line-height: 1.25;
	color: var(--text-black);
	margin-bottom: var(--space-2);
	border-bottom: 2px solid var(--nvidia-green);
	display: inline-block;
	padding-bottom: 4px;
}

.service-card p {
	font-size: 15px;
	line-height: 1.67;
	color: var(--text-gray);
	margin-bottom: var(--space-3);
}

.service-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	list-style: none;
}

.service-tags li {
	font-size: 12px;
	font-weight: 600;
	color: var(--text-gray);
	background: var(--surface-soft);
	padding: 6px 12px;
	border-radius: var(--radius);
}

/* ===== Gallery Section ===== */
.gallery-section {
	background: var(--surface-soft);
}

.gallery-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: var(--space-2);
}

.gallery-item {
	position: relative;
	overflow: hidden;
	border-radius: var(--radius);
	border: 1px solid var(--hairline);
	background: var(--white);
}

.gallery-item img {
	width: 100%;
	height: 280px;
	object-fit: cover;
	display: block;
	transition: transform 0.3s;
}

.gallery-item:hover img {
	transform: scale(1.05);
}

.gallery-caption {
	padding: var(--space-2);
	font-size: 14px;
	line-height: 1.5;
	color: var(--text-gray);
	background: var(--white);
	border-top: 1px solid var(--hairline);
}

.gallery-item-wide {
	grid-column: span 2;
}

/* ===== About Section ===== */
.about-section {
	background: var(--canvas);
}

.about-content {
	max-width: 900px;
	margin: 0 auto;
}

.about-text p {
	font-size: 17px;
	line-height: 1.9;
	color: var(--text-dark);
	margin-bottom: var(--space-3);
}

.about-text p strong {
	color: var(--text-black);
	font-weight: 700;
}

.about-brands {
	margin-top: var(--space-5);
	padding-top: var(--space-4);
	border-top: 2px solid var(--nvidia-green);
}

.about-brands h3 {
	font-size: 18px;
	font-weight: 700;
	color: var(--text-black);
	margin-bottom: var(--space-2);
}

.brand-tags {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
}

.brand-tags span {
	font-size: 14px;
	font-weight: 600;
	color: var(--text-dark);
	background: var(--surface-soft);
	padding: 10px 16px;
	border-radius: var(--radius);
	border: 1px solid var(--hairline);
}

/* ===== Contact Section ===== */
.contact-section {
	background: var(--surface-soft);
}

.contact-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--space-4);
	max-width: 900px;
	margin: 0 auto;
}

.contact-card {
	background: var(--white);
	border: 1px solid var(--hairline);
	border-radius: var(--radius);
	padding: var(--space-4);
	display: flex;
	gap: var(--space-3);
	align-items: flex-start;
}

.contact-icon {
	flex: 0 0 auto;
	width: 48px;
	height: 48px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--black);
	color: var(--nvidia-green);
	border-radius: var(--radius);
}

.contact-info {
	flex: 1 1 auto;
}

.contact-note {
	font-size: 13px;
	color: var(--text-light);
	margin-top: 6px;
	line-height: 1.5;
}

.contact-card h3 {
	font-size: 18px;
	font-weight: 700;
	color: var(--text-black);
	margin-bottom: var(--space-2);
	border-bottom: 2px solid var(--nvidia-green);
	display: inline-block;
	padding-bottom: 4px;
}

.contact-item {
	display: flex;
	flex-direction: column;
	gap: 8px;
	margin-bottom: var(--space-2);
}

.contact-item:last-child {
	margin-bottom: 0;
}

.contact-label {
	font-size: 14px;
	font-weight: 700;
	color: var(--text-gray);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.contact-value {
	font-size: 16px;
	color: var(--text-dark);
	text-decoration: none;
}

.contact-value:hover {
	color: var(--nvidia-green);
}

/* ===== Footer - Dark Chapter ===== */
.site-footer {
	background: var(--black);
	color: var(--text-light);
	padding: var(--space-8) 0 var(--space-4);
}

.footer-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: var(--space-5);
	margin-bottom: var(--space-5);
}

.footer-section h4 {
	font-size: 16px;
	font-weight: 700;
	color: var(--white);
	margin-bottom: var(--space-2);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.footer-section ul {
	list-style: none;
}

.footer-section li {
	margin-bottom: 12px;
	font-size: 14px;
}

.footer-section a {
	color: var(--text-light);
	text-decoration: none;
	transition: color 0.2s;
}

.footer-section a:hover {
	color: var(--nvidia-green);
}

.footer-bottom {
	padding-top: var(--space-4);
	border-top: 1px solid var(--border);
	text-align: center;
	font-size: 14px;
	color: var(--text-light);
}

/* ===== Responsive ===== */
@media (max-width: 880px) {
	.site-nav {
		display: none;
	}

	.hero {
		min-height: 500px;
	}

	.services-grid {
		grid-template-columns: 1fr;
	}

	.gallery-grid {
		grid-template-columns: 1fr;
	}

	.gallery-item-wide {
		grid-column: auto;
	}

	.contact-grid {
		grid-template-columns: 1fr;
	}

	.footer-grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 560px) {
	.hero-actions {
		flex-direction: column;
		width: 100%;
	}

	.btn {
		width: 100%;
		text-align: center;
	}
}