/**
 * Wiredframe – Modern CSS with BEM
 * Optimized for performance and maintainability
 */
/* ===========================================
   Design Tokens
   =========================================== */
:root {
	/* Colors */
	--color-primary: #042E3E;
	--color-accent: #3FF390;
	--color-text: #aebab3;
	--color-text-muted: #b4bdbf;
	--color-white: #fff;
	--color-error: #e76e66;
	--color-border: #e5e9eb;
	/* Typography */
	--font-family: 'Maven Pro', system-ui, -apple-system, sans-serif;
	--font-size-base: 16px;
	--font-size-sm: 14px;
	--font-size-lg: 18px;
	--font-size-xl: 20px;
	--font-size-2xl: 30px;
	--font-size-3xl: 50px;
	--font-size-4xl: 70px;
	--font-size-counter: 150px;
	/* Spacing */
	--spacing-xs: 10px;
	--spacing-sm: 15px;
	--spacing-md: 20px;
	--spacing-lg: 30px;
	--spacing-xl: 50px;
	--spacing-2xl: 100px;
	/* Sizes */
	--container-max: 1170px;
	--nav-height: 100px;
	--border-radius: 50px;
	--border-radius-sm: 25px;
	/* Transitions */
	--transition-fast: 200ms ease;
	--transition-medium: 500ms ease;
}

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

html {
	scroll-behavior: smooth;
	font-size: var(--font-size-base);
}

body {
	font-family: var(--font-family);
	color: var(--color-primary);
	line-height: 1.5;
	background-color: var(--color-white);
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: inherit;
	text-decoration: none;
}

button {
	font: inherit;
	cursor: pointer;
	border: none;
	background: none;
}

/* Skip Link */
.skip-link {
	position: absolute;
	left: -999px;
	top: auto;
	width: 1px;
	height: 1px;
	overflow: hidden;
	z-index: 9999;
	padding: 1em;
	background: var(--color-primary);
	color: var(--color-accent);
}

.skip-link:focus {
	left: 10px;
	top: 10px;
	width: auto;
	height: auto;
	overflow: visible;
}

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

/* ===========================================
   BLOCK: Section
   =========================================== */
.section {
	position: relative;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: var(--spacing-xl) 0 var(--spacing-2xl);
}

.section--dark {
	background: var(--color-primary);
	border-radius: var(--border-radius);
	margin-inline: var(--spacing-xl);
}

.section--hero {
	padding-bottom: var(--spacing-2xl);
	padding-top: 0;
}

.section--impressum {
	display: none;
	min-height: auto;
	padding: var(--spacing-lg) 0 var(--spacing-xl);
}

/* ===========================================
   BLOCK: Navigation
   =========================================== */
.nav {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: space-between;
	width: 100%;
	height: var(--nav-height);
	padding: var(--spacing-sm) var(--spacing-lg);
}

.nav__logo {
	display: block;
	width: 300px;
	flex-shrink: 0;
}

.nav__logo-img {
	width: 100%;
}

.nav__menu {
	display: flex;
	gap: var(--spacing-xs);
	padding-top: var(--spacing-md);
	border-radius: var(--border-radius-sm);
	margin-inline: var(--spacing-sm);
}

.nav__link {
	padding: var(--spacing-xs) var(--spacing-sm);
	border-radius: 5px;
	font-size: var(--font-size-xl);
}

.nav__link:hover {
	color: var(--color-accent);
}

.nav__toggle {
	display: none;
	width: 32px;
	height: 32px;
	position: relative;
}

/* Hamburger Icon */
.nav__hamburger {
	display: block;
	width: 28px;
	height: 20px;
	position: relative;
}

.nav__hamburger-line {
	display: block;
	position: absolute;
	left: 0;
	width: 100%;
	height: 2px;
	background: var(--color-primary);
	border-radius: 2px;
	transition: transform 0.3s ease, opacity 0.2s ease, top 0.3s ease;
}

.nav__hamburger-line:nth-child(1) {
	top: 0;
}

.nav__hamburger-line:nth-child(2) {
	top: 50%;
	transform: translateY(-50%);
}

.nav__hamburger-line:nth-child(3) {
	top: 100%;
	transform: translateY(-100%);
}

/* Hamburger → X Animation */
.nav.is-open .nav__hamburger-line:nth-child(1) {
	top: 50%;
	transform: translateY(-50%) rotate(45deg);
}

.nav.is-open .nav__hamburger-line:nth-child(2) {
	opacity: 0;
	transform: translateY(-50%) scaleX(0);
}

.nav.is-open .nav__hamburger-line:nth-child(3) {
	top: 50%;
	transform: translateY(-50%) rotate(-45deg);
}

/* ===========================================
   BLOCK: Hero Logo Animation
   =========================================== */
.logo-anim {
	position: relative;
	width: 300px;
	height: 300px;
}

.logo-anim__ring {
	position: absolute;
	transform: rotate(180deg);
}

.logo-anim__ring--1 {
	width: 296px;
	height: 296px;
	inset: 0;
	animation: logoRotate1 1s ease-out 0.1s forwards;
}

.logo-anim__ring--2 {
	width: 213px;
	height: 213px;
	left: 40px;
	top: 40px;
	animation: logoRotate2 0.9s ease-out 0.2s forwards;
}

.logo-anim__ring--3 {
	width: 128px;
	height: 127px;
	left: 83px;
	top: 83px;
	animation: logoRotate3 0.8s ease-out 0.3s forwards;
}

.logo-anim__dot {
	position: absolute;
	width: 33px;
	height: 30px;
	left: 165px;
	top: 92px;
	opacity: 0;
	animation: logoPop 0.5s ease-out 0.65s forwards;
}

@keyframes logoRotate1 {
	0% {
		transform: rotate(180deg);
	}

	50% {
		transform: rotate(-12deg);
	}

	65% {
		transform: rotate(6deg);
	}

	78% {
		transform: rotate(-3deg);
	}

	88% {
		transform: rotate(1.5deg);
	}

	100% {
		transform: rotate(0deg);
	}
}

@keyframes logoRotate2 {
	0% {
		transform: rotate(180deg);
	}

	50% {
		transform: rotate(-10deg);
	}

	65% {
		transform: rotate(5deg);
	}

	78% {
		transform: rotate(-2.5deg);
	}

	100% {
		transform: rotate(0deg);
	}
}

@keyframes logoRotate3 {
	0% {
		transform: rotate(180deg);
	}

	50% {
		transform: rotate(-8deg);
	}

	65% {
		transform: rotate(4deg);
	}

	78% {
		transform: rotate(-2deg);
	}

	100% {
		transform: rotate(0deg);
	}
}

@keyframes logoPop {
	0% {
		opacity: 0;
		transform: scale(0);
	}

	50% {
		opacity: 1;
		transform: scale(1.25);
	}

	70% {
		transform: scale(0.92);
	}

	85% {
		transform: scale(1.05);
	}

	100% {
		opacity: 1;
		transform: scale(1);
	}
}

/* ===========================================
   BLOCK: Content
   =========================================== */
.content {
	position: relative;
	z-index: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	padding-top: var(--spacing-lg);
	text-align: center;
}

.content--start {
	padding-top: 0;
}

/* ===========================================
   BLOCK: Typography
   =========================================== */
.heading {
	max-width: 950px;
	font-size: var(--font-size-4xl);
	font-weight: 500;
	line-height: 1.1;
	color: var(--color-primary);
}

.heading--light {
	color: var(--color-accent);
}

.subtitle {
	padding-top: var(--spacing-lg);
	font-size: var(--font-size-2xl);
	color: var(--color-accent);
}

.subtitle--service {
	padding-top: 0;
	padding-bottom: var(--spacing-xs);
	text-align: left;
}

.text {
	max-width: 800px;
	padding-top: var(--spacing-md);
	font-size: var(--font-size-lg);
	font-weight: 300;
	color: var(--color-primary);
	line-height: 1.6;
}

.text--light {
	color: var(--color-text);
}

.text--middle {
	text-align: center;
}

/* ===========================================
   BLOCK: Counter
   =========================================== */
.counter {
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
	font-size: var(--font-size-counter);
	font-weight: 400;
	color: var(--color-accent);
	line-height: 1;
	text-align: left;
}

/* ===========================================
   BLOCK: Button
   =========================================== */
.btn {
	display: inline-block;
	padding: var(--spacing-xs) var(--spacing-sm);
	border: 3px solid var(--color-primary);
	border-radius: var(--border-radius);
	font-size: var(--font-size-lg);
	text-align: center;
	transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.btn:hover {
	background: var(--color-accent);
	border-color: var(--color-accent);
	color: var(--color-primary);
	transform: scale(1.1);
}

.btn--light {
	border-color: var(--color-accent);
	color: var(--color-accent);
}

.btn__arrow {
	display: inline-block;
	margin-left: 5px;
	margin-top: -2px;
	vertical-align: middle;
}

/* ===========================================
   BLOCK: Grid (Ursachen / Leistungen)
   =========================================== */
.grid {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	padding-top: var(--spacing-lg);
}

.grid__item {
	width: 33.333%;
	padding: var(--spacing-sm);
	font-size: var(--font-size-lg);
	color: var(--color-primary);
	line-height: 1.4;
}

.grid__number {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 72px;
	height: 72px;
	margin-bottom: var(--spacing-md);
	border-radius: 50%;
	background: var(--color-primary);
	color: var(--color-accent);
	font-size: 40px;
	line-height: 1;
}

/* ===========================================
   BLOCK: Service
   =========================================== */
.services {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--spacing-lg);
	padding-top: var(--spacing-lg);
}

.service {
	display: flex;
	align-items: flex-start;
	width: calc(50% - var(--spacing-lg));
	padding: var(--spacing-sm);
}

.service__icon {
	width: 100px;
	flex-shrink: 0;
	margin-right: var(--spacing-lg);
}

.service__title {
	padding-bottom: var(--spacing-xs);
	font-size: var(--font-size-2xl);
	color: var(--color-accent);
	font-weight: 500;
	text-align: left;
}

.service__text {
	font-size: var(--font-size-base);
	color: var(--color-text);
	text-align: left;
	line-height: 1.5;
}

/* ===========================================
   BLOCK: Stats
   =========================================== */
.stats {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--spacing-md);
	padding-top: var(--spacing-lg);
}

.stat {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 210px;
	height: 210px;
	margin: var(--spacing-xs);
	background: url('../images/shape-blue.svg') center/cover no-repeat;
	text-align: center;
	padding-bottom: var(--spacing-lg);
}

.stat--photo {
	background-image: url('../images/shape-profile.svg');
}

.stat__label {
	font-size: var(--font-size-sm);
	color: var(--color-primary);
	line-height: 1.2;
}

.stat__value {
	font-size: 80px;
	font-weight: 500;
	color: var(--color-primary);
	line-height: 1;
}

/* ===========================================
   BLOCK: Contact
   =========================================== */
.contact-btns {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--spacing-md);
}

.contact-btn__icon {
	display: inline-block;
	vertical-align: middle;
	margin-right: 3px;
	margin-top: 2px;
}

/* ===========================================
   BLOCK: Retro Footer
   =========================================== */
.retro {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--spacing-lg);
	width: 100%;
	margin-top: 3rem;
}

.retro__divider {
	width: 100%;
	border: none;
	border-top: 1px solid var(--color-border);
}

.retro__counter {
	font-family: 'Courier New', monospace;
	font-weight: bold;
	padding: 6px 12px;
	background: #000;
	color: #0f0;
	font-size: var(--font-size-base);
	border: 2px inset #ccc;
	box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
	transition: transform var(--transition-fast), background var(--transition-fast);
}

.retro__counter.bump {
	transform: scale(1.1);
	background: #060;
}

.retro__badges {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-items: center;
	gap: 12px;
}

.retro__link {
	font-family: 'Courier New', monospace;
	color: inherit;
}

/* ===========================================
   BLOCK: Footer
   =========================================== */
.footer {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--spacing-lg);
	width: 100%;
	margin-top: 3rem;
	padding-bottom: 3rem;
	font-size: var(--font-size-sm);
	color: var(--color-primary);
}

.footer__link {
	color: inherit;
}

.footer__link:hover {
	color: var(--color-accent);
}

/* ===========================================
   BLOCK: Impressum
   =========================================== */
.impressum {
	position: relative;
	max-width: var(--container-max);
	margin: 0 auto;
	padding: var(--spacing-lg) var(--spacing-md);
}

.impressum__close {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 60px;
	height: 60px;
	margin: 0 auto var(--spacing-lg);
	border-radius: 50%;
	background: var(--color-border);
	transition: background var(--transition-fast);
}

.impressum__close:hover {
	background: var(--color-accent);
}

.impressum__title {
	font-size: var(--font-size-xl);
	color: var(--color-primary);
	margin-bottom: var(--spacing-lg);
}

.impressum__text {
	font-size: var(--font-size-sm);
	color: var(--color-primary);
	line-height: 1.6;
}

.impressum__subtitle {
	display: block;
	padding: var(--spacing-md) 0;
	font-size: var(--font-size-xl);
	color: var(--color-text-muted);
}

/* ===========================================
   BLOCK: Back to Top (CSS Scroll-Driven)
   =========================================== */
.back-to-top {
	position: fixed;
	top: 30px;
	right: 30px;
	z-index: 1000;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 60px;
	height: 60px;
	border-radius: 50%;
	background: var(--color-accent);
	transition: transform var(--transition-fast), opacity 0.3s ease;
	opacity: 0;
	pointer-events: none;
}

.back-to-top:hover {
	transform: scale(1.2);
}

/* ===========================================
   BLOCK: Scroll Animations (CSS Scroll-Driven)
   =========================================== */
@keyframes scroll-reveal {
	from {
		opacity: 0;
		transform: translateY(30px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Scroll Reveal via IntersectionObserver (konsistent in allen Browsern) */
[data-animate] {
	opacity: 0;
	transform: translateY(40px);
	transition: opacity 0.7s ease-out, transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-animate].is-visible {
	opacity: 1;
	transform: translateY(0);
}

/* Staggered children */
@keyframes scroll-reveal-child {
	from {
		opacity: 0;
		transform: translateY(20px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Fallback für staggered children */
[data-animate="stagger"]>* {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animate="stagger"].is-visible>*:nth-child(1) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0s;
}

[data-animate="stagger"].is-visible>*:nth-child(2) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0.1s;
}

[data-animate="stagger"].is-visible>*:nth-child(3) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0.15s;
}

[data-animate="stagger"].is-visible>*:nth-child(4) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0.2s;
}

[data-animate="stagger"].is-visible>*:nth-child(5) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0.25s;
}

[data-animate="stagger"].is-visible>*:nth-child(6) {
	opacity: 1;
	transform: translateY(0);
	transition-delay: 0.3s;
}

/* ===========================================
   Responsive: Tablet (max 991px)
   =========================================== */
@media (max-width: 991px) {
	.section {
		padding: var(--spacing-lg) 0 var(--spacing-xl);
	}

	.section--hero {
		padding-top: 0;
	}

	.section--dark {
		margin-inline: var(--spacing-sm);
	}

	.nav__menu {
		display: flex;
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		flex-direction: column;
		padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-xl);
		background: var(--color-white);
		box-shadow: 0 10px 40px -10px rgba(4, 46, 62, 0.15), 0 10px 40px -10px rgba(4, 46, 62, 0.08);
		z-index: 999;
		opacity: 0;
		visibility: hidden;
		transform: translateY(-10px);
		transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
	}

	.nav.is-open .nav__menu {
		opacity: 1;
		visibility: visible;
		transform: translateY(0);
	}

	/* Menu items stagger animation */
	.nav__link {
		padding: 12px 0;
		font-size: 25px;
		line-height: 1.5;
		opacity: 0;
		transform: translateY(-15px);
		transition: opacity 0.3s ease, transform 0.3s ease, color var(--transition-fast);
	}

	.nav.is-open .nav__link:nth-child(1) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.05s;
	}

	.nav.is-open .nav__link:nth-child(2) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.1s;
	}

	.nav.is-open .nav__link:nth-child(3) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.15s;
	}

	.nav.is-open .nav__link:nth-child(4) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.2s;
	}

	.nav.is-open .nav__link:nth-child(5) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.25s;
	}

	.nav.is-open .nav__link:nth-child(6) {
		opacity: 1;
		transform: translateY(0);
		transition-delay: 0.3s;
	}

	.nav__toggle {
		display: block;
	}

	.heading {
		font-size: 55px;
		text-align: left;
	}

	.service {
		width: 100%;
		flex-direction: column;
		align-items: center;
		text-align: center;
	}

	.service__icon {
		margin-right: 0;
		margin-bottom: var(--spacing-md);
	}

	.service__title,
	.service__text {
		text-align: center;
	}

	.grid__item {
		width: 25%;
	}

	.back-to-top {
		top: auto;
		bottom: 20px;
		right: 20px;
	}
}

/* ===========================================
   Responsive: Mobile (max 767px)
   =========================================== */
@media (max-width: 767px) {
	.heading {
		font-size: 50px;
		text-align: center;
	}

	.counter {
		width: 100%;
		font-size: 100px;
		text-align: center;
	}

	.grid__item {
		width: 33.333%;
		padding-bottom: var(--spacing-md);
		align-items: center;
		justify-content: center;
		text-align: center;
	}

	.content {
		padding-left: var(--spacing-lg);
		padding-right: var(--spacing-lg);
	}
}

/* ===========================================
   Responsive: Small Mobile (max 479px)
   =========================================== */
@media (max-width: 479px) {
	.nav__logo {
		width: 250px;
	}

	.heading {
		font-size: 2.5rem;
	}

	.subtitle {
		font-size: 1.5rem;
	}

	.text {
		font-size: var(--font-size-lg);
	}

	.counter {
		font-size: 77px;
	}

	.grid__item {
		width: 100%;
	}

	.service {
		width: 100%;
	}

	.stat {
		width: 180px;
		height: 180px;
	}

	.stat__value {
		font-size: 60px;
	}

	.logo-anim {
		width: 250px;
		height: 250px;
	}

	.logo-anim__ring--1 {
		width: 240px;
		height: 240px;
		left: 5px;
		top: 5px;
	}

	.logo-anim__ring--2 {
		width: 173px;
		height: 173px;
		left: 38px;
		top: 38px;
	}

	.logo-anim__ring--3 {
		width: 103px;
		height: 103px;
		left: 73px;
		top: 73px;
	}

	.logo-anim__dot {
		width: 26px;
		height: 23px;
		left: 137px;
		top: 85px;
	}

	.section--hero {
		padding-top: 0;
	}
}