/* =====================================================
   Automate X Solutions — Corporate Website Stylesheet
   ===================================================== */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
	/* Colors */
	--color-navy: #001d51;
	--color-blue: #2e75b6;
	--color-blue-light: #eaf2fb;
	--color-gray-900: #1a1a1a;
	--color-gray-700: #4a4a4a;
	--color-gray-500: #767676;
	--color-gray-300: #c4c4c4;
	--color-gray-100: #f4f4f5;
	--color-white: #ffffff;

	/* Typography */
	--font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
		Arial, sans-serif;
	--font-mono: 'SF Mono', Consolas, 'Courier New', monospace;

	/* Sizing */
	--content-max-width: 1080px;
	--content-narrow-width: 780px;

	/* Spacing */
	--space-xs: 0.5rem;
	--space-sm: 1rem;
	--space-md: 1.5rem;
	--space-lg: 2.5rem;
	--space-xl: 4rem;
	--space-xxl: 6rem;

	/* Borders */
	--border-radius: 4px;
	--border-color: #e5e5e5;
}

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

html {
	scroll-behavior: smooth;
	-webkit-text-size-adjust: 100%;
	scrollbar-gutter: stable;
}

body {
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.6;
	color: var(--color-gray-900);
	background-color: var(--color-white);
	min-height: 100vh;
	display: flex;
	flex-direction: column;
}

/* --- Typography --- */
h1,
h2,
h3,
h4 {
	color: var(--color-navy);
	line-height: 1.25;
	font-weight: 700;
	margin-bottom: var(--space-sm);
}

h1 {
	font-size: 2.25rem;
	letter-spacing: -0.02em;
}

h2 {
	font-size: 1.625rem;
	letter-spacing: -0.01em;
	margin-top: var(--space-lg);
}

h3 {
	font-size: 1.25rem;
	margin-top: var(--space-md);
}

p {
	margin-bottom: var(--space-sm);
	max-width: 65ch;
}

a {
	color: var(--color-blue);
	text-decoration: none;
	transition: color 0.15s ease;
}

a:hover,
a:focus {
	color: var(--color-navy);
	text-decoration: underline;
}

strong {
	font-weight: 600;
	color: var(--color-gray-900);
}

/* --- Layout --- */
.container {
	width: 100%;
	max-width: var(--content-max-width);
	margin: 0 auto;
	padding: 0 var(--space-md);
}

.container-narrow {
	max-width: var(--content-narrow-width);
}

main {
	flex: 1;
	padding: var(--space-xl) 0;
}

/* --- Header --- */
.site-header {
	background-color: var(--color-white);
	border-bottom: 1px solid var(--border-color);
	padding: var(--space-sm) 0;
	position: sticky;
	top: 0;
	z-index: 100;
}

.site-header .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: var(--space-sm);
}

.site-logo {
	display: inline-block;
	text-decoration: none;
	line-height: 0;
	/* Fallback text styling in case image fails to load */
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-navy);
	letter-spacing: -0.01em;
}

.site-logo:hover {
	text-decoration: none;
	color: var(--color-blue);
	opacity: 0.85;
	transition: opacity 0.15s ease;
}

.site-logo img {
	height: 40px;
	width: auto;
	display: block;
}

@media (max-width: 480px) {
	.site-logo img {
		height: 32px;
	}
}

.site-nav {
	display: flex;
	gap: var(--space-md);
	list-style: none;
}

.site-nav a {
	color: var(--color-gray-700);
	font-weight: 500;
	font-size: 0.9375rem;
	padding: var(--space-xs) 0;
	border-bottom: 2px solid transparent;
	transition: all 0.15s ease;
}

.site-nav a:hover,
.site-nav a.active {
	color: var(--color-navy);
	border-bottom-color: var(--color-blue);
	text-decoration: none;
}

/* --- Hero --- */
.hero {
	background: linear-gradient(135deg, var(--color-navy) 0%, #003080 100%);
	color: var(--color-white);
	padding: var(--space-xxl) 0;
	text-align: center;
}

.hero h1 {
	color: var(--color-white);
	font-size: 2.5rem;
	margin-bottom: var(--space-md);
}

.hero p {
	color: rgba(255, 255, 255, 0.9);
	font-size: 1.125rem;
	max-width: 640px;
	margin-left: auto;
	margin-right: auto;
	margin-bottom: 0;
}

/* --- Content sections --- */
.section {
	padding: var(--space-lg) 0;
}

.section-alt {
	background-color: var(--color-gray-100);
}

.section-title {
	text-align: center;
	margin-bottom: var(--space-lg);
	margin-top: 0;
}

.lead {
	font-size: 1.125rem;
	color: var(--color-gray-700);
}

/* --- Cards / info blocks --- */
.info-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--space-md);
	margin-top: var(--space-lg);
}

.info-card {
	background: var(--color-white);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius);
	padding: var(--space-md);
}

.info-card h3 {
	margin-top: 0;
	color: var(--color-navy);
}

/* --- Definition lists (used in Impressum) --- */
.info-block {
	background: var(--color-gray-100);
	border-left: 3px solid var(--color-blue);
	padding: var(--space-md);
	margin: var(--space-md) 0;
}

dl {
	display: grid;
	grid-template-columns: minmax(180px, auto) 1fr;
	gap: var(--space-xs) var(--space-md);
	margin: var(--space-md) 0;
}

dt {
	font-weight: 600;
	color: var(--color-gray-700);
}

dd {
	color: var(--color-gray-900);
}

/* --- Lists --- */
ul,
ol {
	padding-left: var(--space-md);
	margin-bottom: var(--space-sm);
}

li {
	margin-bottom: 0.25rem;
	max-width: 65ch;
}

/* --- Footer --- */
.site-footer {
	background-color: var(--color-navy);
	color: rgba(255, 255, 255, 0.8);
	padding: var(--space-lg) 0 var(--space-md);
	margin-top: var(--space-xl);
	font-size: 0.9375rem;
}

.footer-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: var(--space-lg);
	margin-bottom: var(--space-md);
}

.footer-column h4 {
	color: var(--color-white);
	font-size: 0.9375rem;
	font-weight: 600;
	margin-bottom: var(--space-sm);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.footer-column ul {
	list-style: none;
	padding-left: 0;
}

.footer-column li {
	margin-bottom: 0.375rem;
}

.footer-column a {
	color: rgba(255, 255, 255, 0.75);
}

.footer-column a:hover {
	color: var(--color-white);
	text-decoration: underline;
}

.footer-column address {
	font-style: normal;
	color: rgba(255, 255, 255, 0.75);
	line-height: 1.7;
}

.footer-bottom {
	border-top: 1px solid rgba(255, 255, 255, 0.15);
	padding-top: var(--space-md);
	text-align: center;
	color: rgba(255, 255, 255, 0.6);
	font-size: 0.875rem;
}

/* --- 404 page --- */
.error-page {
	text-align: center;
	padding: var(--space-xxl) 0;
}

.error-page .error-code {
	font-size: 5rem;
	color: var(--color-navy);
	font-weight: 700;
	line-height: 1;
	margin-bottom: var(--space-sm);
}

/* --- Responsive --- */
@media (max-width: 720px) {
	.hero {
		padding: var(--space-xl) 0;
	}

	.hero h1 {
		font-size: 1.875rem;
	}

	h1 {
		font-size: 1.75rem;
	}

	h2 {
		font-size: 1.375rem;
	}

	dl {
		grid-template-columns: 1fr;
		gap: var(--space-xs);
	}

	dt {
		margin-top: var(--space-xs);
	}

	main {
		padding: var(--space-lg) 0;
	}
}

/* --- Print styles --- */
@media print {
	.site-header,
	.site-footer {
		background: none;
		color: black;
	}

	.hero {
		background: none;
		color: black;
	}
}

/* --- Utility --- */
.text-center {
	text-align: center;
}

.mt-md {
	margin-top: var(--space-md);
}

.mt-lg {
	margin-top: var(--space-lg);
}