/* === default.css === */
:root {
	--size--2: clamp(0.7813rem, 0.775rem + 0.0313vw, 0.8rem);
	--size--1: clamp(0.9375rem, 0.9167rem + 0.1042vw, 1rem);
	--size-0: clamp(1.125rem, 1.0833rem + 0.2083vw, 1.25rem);
	--size-1: clamp(1.35rem, 1.2792rem + 0.3542vw, 1.5625rem);
	--size-2: clamp(1.62rem, 1.509rem + 0.5552vw, 1.9531rem);
	--size-3: clamp(1.944rem, 1.7782rem + 0.829vw, 2.4414rem);
	--size-4: clamp(2.3328rem, 2.0931rem + 1.1983vw, 3.0518rem);
	--size-5: clamp(2.7994rem, 2.4609rem + 1.6922vw, 3.8147rem);
	--size-6: clamp(3.3592rem, 2.8895rem + 2.3486vw, 4.7684rem);
	--size-7: clamp(4.0311rem, 3.3879rem + 3.2156vw, 5.9605rem);

	--space-1: clamp(0.3125rem, 0.3125rem + 0vw, 0.3125rem);
	--space-2: clamp(0.5625rem, 0.5417rem + 0.1042vw, 0.625rem);
	--space-3: clamp(0.875rem, 0.8542rem + 0.1042vw, 0.9375rem);
	--space-4: clamp(1.125rem, 1.0833rem + 0.2083vw, 1.25rem);
	--space-5: clamp(1.6875rem, 1.625rem + 0.3125vw, 1.875rem);
	--space-6: clamp(2.25rem, 2.1667rem + 0.4167vw, 2.5rem);
	--space-7: clamp(3.375rem, 3.25rem + 0.625vw, 3.75rem);
	--space-8: clamp(4.5rem, 4.3333rem + 0.8333vw, 5rem);
	--space-9: clamp(6.75rem, 6.5rem + 1.25vw, 7.5rem);
}

body {
	font-size: var(--size-0);
}

h1 { font-size: var(--size-6); }
h2 { font-size: var(--size-5); }
h3 { font-size: var(--size-4); }
h4 { font-size: var(--size-3); }
h5 { font-size: var(--size-2); }
h6 { font-size: var(--size-1); }

/* === Website styles === */
:root {
	--color-dark: #1e242e;
	--color-steel: #3d4a5c;
	--color-steel-light: #6b7a8d;
	--color-yellow: #f5c518;
	--color-yellow-hover: #d9ae10;
	--color-bg: #f4f5f7;
	--color-white: #ffffff;
	--color-text: #1e242e;
	--color-text-muted: #505d6e;
	--color-border: #d0d5dd;
}

*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}
}

body {
	font-family: 'Segoe UI', Arial, sans-serif;
	color: var(--color-text);
	background: var(--color-bg);
	line-height: 1.6;
}

a {
	color: inherit;
	text-decoration: underline;
}

a:hover, a:focus, a:active {
	color: var(--color-yellow);
	outline-offset: 2px;
}

a:focus {
	outline: 2px solid var(--color-yellow);
	border-radius: 2px;
}

/* === Skip link === */
.skip-link {
	position: absolute;
	left: -9999px;
	top: var(--space-3);
	z-index: 999;
	background: var(--color-yellow);
	color: var(--color-dark);
	padding: var(--space-2) var(--space-4);
	font-weight: 700;
	text-decoration: none;
	border-radius: 2px;
}

.skip-link:focus {
	left: var(--space-3);
	outline: 2px solid var(--color-dark);
	outline-offset: 2px;
}

/* === Navigation === */
.site-header {
	position: relative;
	z-index: 100;
	background: var(--color-dark);
	border-bottom: 3px solid var(--color-yellow);
}

.nav-inner {
	max-width: 72rem;
	margin: 0 auto;
	padding: var(--space-5) var(--space-5);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
}

.logo {
	text-decoration: none;
	display: flex;
	flex-direction: column;
	line-height: 1.1;
}

.logo:hover, .logo:focus, .logo:active {
	color: var(--color-yellow);
}

.logo-name {
	font-size: var(--size-2);
	font-weight: 700;
	letter-spacing: 0.05em;
	color: var(--color-white);
}

.logo-tagline {
	font-size: var(--size--2);
	color: #8fa3bb;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

/* Mobile default: nav hidden, toggle visible */
.nav-links {
	display: none;
	list-style: none;
	flex-direction: column;
	gap: 0;
	position: absolute;
	top: 100%;
	left: 0;
	right: 0;
	background: var(--color-dark);
	border-top: 1px solid var(--color-steel);
	padding: var(--space-3) 0;
}

.nav-links.is-open {
	display: flex;
}

.nav-links a {
	color: var(--color-white);
	text-decoration: none;
	font-size: var(--size--1);
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	padding: var(--space-3) var(--space-5);
	border-left: 2px solid transparent;
	transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover, .nav-links a:focus, .nav-links a:active {
	color: var(--color-yellow);
	border-left-color: var(--color-yellow);
}

.nav-links a:focus {
	outline: 2px solid var(--color-yellow);
	outline-offset: 3px;
	border-radius: 2px;
}

.nav-toggle {
	display: block;
	background: none;
	border: none;
	cursor: pointer;
	padding: var(--space-2);
	color: var(--color-white);
}

.nav-toggle:focus {
	outline: 2px solid var(--color-yellow);
	outline-offset: 2px;
	border-radius: 2px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
	display: block;
	width: 1.5rem;
	height: 2px;
	background: var(--color-white);
	transition: transform 0.3s;
}

.hamburger {
	position: relative;
}

.hamburger::before,
.hamburger::after {
	content: '';
	position: absolute;
	left: 0;
}

.hamburger::before { top: -0.45rem; }
.hamburger::after { top: 0.45rem; }

/* === Hero === */
.hero {
	background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-steel) 100%);
	color: var(--color-white);
	padding: var(--space-9) var(--space-5);
	text-align: center;
}

.hero-inner {
	max-width: 50rem;
	margin: 0 auto;
}

.hero h1 {
	font-weight: 800;
	letter-spacing: -0.02em;
	line-height: 1.1;
	margin-bottom: var(--space-4);
}

.hero h1 span {
	color: var(--color-yellow);
}

.hero-lead {
	font-size: var(--size-1);
	color: #c0cad8;
	margin-bottom: var(--space-6);
	line-height: 1.6;
}

.btn {
	display: inline-block;
	background: var(--color-yellow);
	color: var(--color-dark);
	font-weight: 700;
	font-size: var(--size--1);
	text-transform: uppercase;
	letter-spacing: 0.06em;
	text-decoration: none;
	padding: var(--space-3) var(--space-6);
	border-radius: 3px;
	transition: background 0.2s, transform 0.1s;
}

.btn:hover, .btn:focus, .btn:active {
	background: var(--color-yellow-hover);
	color: var(--color-dark);
	transform: translateY(-1px);
}

.btn:focus {
	outline: 3px solid var(--color-white);
	outline-offset: 2px;
}

/* === Section layout === */
.section {
	padding: var(--space-8) var(--space-5);
}

.section-inner {
	max-width: 72rem;
	margin: 0 auto;
}

.section-title {
	text-align: center;
	margin-bottom: var(--space-2);
	color: var(--color-steel);
}

.section-title span {
	color: var(--color-yellow);
}

.section-divider {
	width: 3rem;
	height: 3px;
	background: var(--color-yellow);
	margin: var(--space-3) auto var(--space-7);
}

/* === Services === */
.services {
	background: var(--color-white);
}

.services-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-5);
}

.service-card {
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-top: 4px solid var(--color-yellow);
	border-radius: 4px;
	padding: var(--space-6);
}

.service-icon {
	width: 3rem;
	height: 3rem;
	margin-bottom: var(--space-3);
	display: block;
}

.service-card h3 {
	margin-bottom: var(--space-3);
	color: var(--color-steel);
}

.service-card p {
	color: var(--color-text-muted);
	line-height: 1.65;
}

/* === Contact === */
.contact {
	background: var(--color-dark);
	color: var(--color-white);
}

.contact .section-title {
	color: var(--color-white);
}

.contact-box {
	max-width: 34rem;
	margin: 0 auto;
	text-align: center;
}

.contact-box p {
	color: #a0adb8;
	margin-bottom: var(--space-5);
}

.contact-email {
	display: inline-block;
	font-size: var(--size-2);
	font-weight: 700;
	color: var(--color-yellow);
	text-decoration: underline;
	margin-bottom: var(--space-6);
	word-break: break-all;
}

.contact-email:hover, .contact-email:focus, .contact-email:active {
	color: var(--color-yellow-hover);
}

.contact-email:focus {
	outline: 2px solid var(--color-yellow);
	outline-offset: 3px;
	border-radius: 2px;
}

/* === Footer === */
.site-footer {
	background: #131820;
	color: #8a9ab0;
	text-align: center;
	padding: var(--space-5) var(--space-5);
	font-size: var(--size--2);
}

.site-footer a {
	color: #8a9ab0;
	text-decoration: underline;
}

.site-footer a:hover, .site-footer a:focus, .site-footer a:active {
	color: var(--color-yellow);
}

/* === Responsive === */
@media (min-width: 40rem) {
	.services-grid {
		grid-template-columns: 1fr 1fr;
	}
}

@media (min-width: 60rem) {
	.services-grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/* Desktop: nav visible as row, toggle hidden */
@media (min-width: 48rem) {
	.site-header {
		position: sticky;
		top: 0;
	}

	.nav-toggle {
		display: none;
	}

	.nav-links {
		display: flex;
		flex-direction: row;
		gap: var(--space-5);
		position: static;
		background: none;
		border-top: none;
		padding: 0;
	}

	.nav-links a {
		padding: var(--space-2) 0;
		border-left: none;
		border-bottom: 2px solid transparent;
	}

	.nav-links a:hover, .nav-links a:focus, .nav-links a:active {
		border-left-color: transparent;
		border-bottom-color: var(--color-yellow);
	}
}