/* G L O B A L   S T Y L E S */
:root {
	--color-background: #111827;
	--color-text: #f9fafb;
	--color-primary: #2dd4bf;
	--color-secondary-text: #9ca3af;
	--color-surface: #1f2937;
	--color-border: #374151;

	--font-family-base: 'Inter', sans-serif;
	--font-family-heading: 'Space Grotesk', sans-serif;

	--container-width: 1140px;
	--container-padding: 1.5rem;
}

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

html {
	scroll-behavior: smooth;
	font-size: 16px;
}

body {
	background-color: var(--color-background);
	color: var(--color-text);
	font-family: var(--font-family-base);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-family: var(--font-family-heading);
	color: var(--color-text);
	line-height: 1.2;
}

a {
	color: var(--color-primary);
	text-decoration: none;
	transition: color 0.3s ease;
}

a:hover {
	color: var(--color-text);
}

ul {
	list-style: none;
}

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

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

.container {
	width: 100%;
	max-width: var(--container-width);
	margin-left: auto;
	margin-right: auto;
	padding-left: var(--container-padding);
	padding-right: var(--container-padding);
}

/* L O G O */
.logo {
	display: inline-flex;
	align-items: center;
	gap: 0.75rem;
	color: var(--color-text);
	font-family: var(--font-family-heading);
	font-size: 1.25rem;
	font-weight: 700;
}

.logo__svg {
	color: var(--color-primary);
}

.logo:hover {
	color: var(--color-primary);
}
.logo:hover .logo__svg {
	color: var(--color-text);
}

/* H E A D E R */
.header {
	padding: 1.5rem 0;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	background-color: rgba(17, 24, 39, 0.8);
	backdrop-filter: blur(10px);
	z-index: 100;
	border-bottom: 1px solid var(--color-border);
}

.header__container {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.header__nav {
	display: none; /* Hidden on mobile */
}

.header__nav-list {
	display: flex;
	align-items: center;
	gap: 2rem;
}

.header__nav-link {
	color: var(--color-text);
	font-weight: 500;
	position: relative;
	padding-bottom: 0.25rem;
}

.header__nav-link::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background-color: var(--color-primary);
	transition: width 0.3s ease;
}

.header__nav-link:hover::after {
	width: 100%;
}

.header__nav-link--button {
	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 0.5rem 1.25rem;
	border-radius: 999px;
	transition: background-color 0.3s ease, color 0.3s ease;
}

.header__nav-link--button:hover {
	background-color: var(--color-text);
	color: var(--color-background);
}

.header__nav-link--button::after {
	display: none; /* No underline for button */
}

.header__burger-btn {
	background: none;
	border: none;
	color: var(--color-text);
	cursor: pointer;
	padding: 0.5rem;
	z-index: 101; /* Above mobile menu */
	transition: color 0.3s ease;
}

.header__burger-btn:hover {
	color: var(--color-primary);
}

/* Mobile Menu Overlay */
.header__nav {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100vh;
	background-color: rgba(17, 24, 39, 0.95);
	backdrop-filter: blur(20px);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 100;
	opacity: 0;
	visibility: hidden;
	transform: translateY(-100%);
	transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.header__nav.active {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.header__nav-list {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 2rem;
	text-align: center;
}

.header__nav-item {
	opacity: 0;
	transform: translateY(20px);
	animation: fadeInUp 0.4s ease forwards;
}

.header__nav.active .header__nav-item:nth-child(1) {
	animation-delay: 0.1s;
}
.header__nav.active .header__nav-item:nth-child(2) {
	animation-delay: 0.2s;
}
.header__nav.active .header__nav-item:nth-child(3) {
	animation-delay: 0.3s;
}
.header__nav.active .header__nav-item:nth-child(4) {
	animation-delay: 0.4s;
}
.header__nav.active .header__nav-item:nth-child(5) {
	animation-delay: 0.5s;
}
.header__nav.active .header__nav-item:nth-child(6) {
	animation-delay: 0.6s;
}

.header__nav-link {
	font-size: 1.5rem;
	font-weight: 500;
	color: var(--color-text);
	position: relative;
	padding: 1rem 2rem;
	border-radius: 0.5rem;
	transition: color 0.3s ease, background-color 0.3s ease;
}

.header__nav-link:hover {
	color: var(--color-primary);
	background-color: rgba(45, 212, 191, 0.1);
}

.header__nav-link--button {
	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 1rem 2rem;
	border-radius: 999px;
	font-size: 1.25rem;
	margin-top: 1rem;
}

.header__nav-link--button:hover {
	background-color: var(--color-text);
	color: var(--color-background);
}

/* Animation keyframes */
@keyframes fadeInUp {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* F O O T E R */
.footer {
	padding: 4rem 0 2rem;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
}

.footer__container {
	display: grid;
	grid-template-columns: 1fr;
	gap: 2.5rem;
}

.footer__column {
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.footer__logo {
	margin-bottom: 0.5rem;
}

.footer__copyright {
	color: var(--color-secondary-text);
	font-size: 0.875rem;
}

.footer__title {
	font-size: 1.125rem;
	margin-bottom: 0.5rem;
}

.footer__list {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.footer__link,
.footer__text {
	color: var(--color-secondary-text);
}

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

/* R E S P O N S I V E   D E S I G N */

/* Tablet */
@media (min-width: 768px) {
	.footer__container {
		grid-template-columns: repeat(2, 1fr);
	}
}

/* Desktop */
@media (min-width: 1024px) {
	.header__burger-btn {
		display: none;
	}

	.header__nav {
		position: static;
		width: auto;
		height: auto;
		background-color: transparent;
		backdrop-filter: none;
		display: block;
		opacity: 1;
		visibility: visible;
		transform: none;
		transition: none;
		z-index: auto;
	}

	.header__nav-list {
		flex-direction: row;
		gap: 2rem;
	}

	.header__nav-item {
		opacity: 1;
		transform: none;
		animation: none;
	}

	.header__nav-link {
		font-size: 1rem;
		padding-bottom: 0.25rem;
		padding-left: 0;
		padding-right: 0;
		padding-top: 0;
		border-radius: 0;
		background-color: transparent;
	}

	.header__nav-link::after {
		content: '';
		position: absolute;
		bottom: 0;
		left: 0;
		width: 0;
		height: 2px;
		background-color: var(--color-primary);
		transition: width 0.3s ease;
	}

	.header__nav-link:hover {
		color: var(--color-text);
		background-color: transparent;
	}

	.header__nav-link:hover::after {
		width: 100%;
	}

	.header__nav-link--button {
		background-color: var(--color-primary);
		color: var(--color-background);
		padding: 0.5rem 1.25rem;
		border-radius: 999px;
		font-size: 1rem;
		margin-top: 0;
	}

	.header__nav-link--button:hover {
		background-color: var(--color-text);
		color: var(--color-background);
	}

	.header__nav-link--button::after {
		display: none;
	}

	.footer__container {
		grid-template-columns: 2fr 1fr 1fr 1fr;
		gap: 3rem;
	}
}

/* assets/css/style.css */

/* Offset for fixed header */
main {
	padding-top: 85px; /* Height of the header */
}

/* H E R O   S E C T I O N */
.hero {
	min-height: 90vh;
	display: flex;
	align-items: center;
	padding: 4rem 0;
}

.hero__container {
	display: grid;
	grid-template-columns: 1fr;
	gap: 3rem;
	align-items: center;
}

.hero__content {
	text-align: center;
}

.hero__title {
	font-size: clamp(1.5rem, 6vw, 2.5rem); /* Адаптивный размер шрифта */
	font-weight: 700;
	margin-bottom: 1.5rem;
}

.hero__title-line {
	display: block;
}

.hero__description {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	max-width: 600px;
	margin: 0 auto 2.5rem;
}

.hero__cta-button {
	display: inline-block;
	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 1rem 2.5rem;
	border-radius: 999px;
	font-weight: 500;
	font-size: 1rem;
	transition: transform 0.3s ease, background-color 0.3s ease;
	border: 2px solid var(--color-primary);
}

.hero__cta-button:hover {
	transform: translateY(-3px);
	background-color: transparent;
	color: var(--color-primary);
}

.hero__visual {
	display: flex;
	justify-content: center;
}

.hero__image {
	max-width: 450px;
	width: 100%;
	border-radius: 1rem;
	opacity: 0.7;
}

/* Animation initial states */
[data-animate='fade-up'] {
	opacity: 0;
	transform: translateY(30px);
	transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Responsive for Desktop */
@media (min-width: 1024px) {
	.hero {
		min-height: 95vh;
	}

	.hero__container {
		grid-template-columns: 1.2fr 1fr;
		gap: 4rem;
	}

	.hero__content {
		text-align: left;
	}

	.hero__description {
		margin-left: 0;
		margin-right: 0;
	}
}

/* assets/css/style.css */

/* S E C T I O N   H E A D E R (Reusable) */
.section-header {
	text-align: center;
	max-width: 700px;
	margin: 0 auto 4rem;
}

.section-header__title {
	font-size: clamp(2rem, 5vw, 2.75rem);
	margin-bottom: 1rem;
}

.section-header__subtitle {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	line-height: 1.7;
}

/* C O N C E P T S   S E C T I O N */
.concepts {
	padding: 6rem 0;
	background-color: var(--color-surface);
}

.concepts__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
}

.concept-card {
	position: relative;
	background-color: var(--color-background);
	border: 1px solid var(--color-border);
	border-radius: 1rem;
	padding: 2rem;
	overflow: hidden;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.concept-card:hover {
	transform: translateY(-5px) scale(1.02);
	border-color: var(--color-primary);
}

.concept-card__content {
	text-align: center;
}

.concept-card__icon {
	color: var(--color-primary);
	width: 48px;
	height: 48px;
	margin-bottom: 1.5rem;
}

.concept-card__title {
	font-size: 1.5rem;
}

.concept-card__overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(31, 41, 55, 0.95);
	backdrop-filter: blur(5px);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 1.5rem;
	text-align: center;

	opacity: 0;
	transform: scale(0.9);
	transition: opacity 0.3s ease, transform 0.3s ease;
}

.concept-card:hover .concept-card__overlay {
	opacity: 1;
	transform: scale(1);
}

.concept-card__description {
	color: var(--color-text);
	font-size: 1rem;
	line-height: 1.6;
}

/* Responsive for Tablet & Desktop */
@media (min-width: 768px) {
	.concepts__grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.concepts__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/* assets/css/style.css */

/* T E C H   S E C T I O N */
.tech {
	padding: 6rem 0;
}

.tech-tabs {
	border: 1px solid var(--color-border);
	border-radius: 1rem;
	overflow: hidden;
}

.tech-tabs__nav {
	display: flex;
	background-color: var(--color-surface);
	border-bottom: 1px solid var(--color-border);
	flex-wrap: wrap; /* Для мобильных */
}

.tech-tabs__nav-btn {
	flex-grow: 1;
	padding: 1rem 1.25rem;
	font-family: var(--font-family-heading);
	font-size: 1rem;
	font-weight: 500;
	color: var(--color-secondary-text);
	background-color: transparent;
	border: none;
	border-bottom: 3px solid transparent;
	cursor: pointer;
	transition: color 0.3s ease, border-color 0.3s ease;
	text-align: center;
}

.tech-tabs__nav-btn:hover {
	color: var(--color-text);
}

.tech-tabs__nav-btn--active {
	color: var(--color-primary);
	border-color: var(--color-primary);
}

.tech-tabs__content {
	padding: 2.5rem;
}

.tech-tabs__panel {
	display: none;
	grid-template-columns: 1fr;
	gap: 2rem;
	align-items: center;
	animation: fadeIn 0.5s ease-in-out;
}

.tech-tabs__panel--active {
	display: grid;
}

.tech-tabs__panel-text h3 {
	font-size: 1.75rem;
	margin-bottom: 1rem;
}

.tech-tabs__panel-text p {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	line-height: 1.7;
}

.tech-tabs__panel-visual img {
	border-radius: 0.75rem;
}

/* Keyframes for fade-in animation */
@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(10px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Responsive */
@media (min-width: 768px) {
	.tech-tabs__panel {
		grid-template-columns: 1fr 1fr;
		gap: 3rem;
	}
}

/* assets/css/style.css */

/* C A S E S   S E C T I O N */
.cases {
	padding: 6rem 0;
	background-color: var(--color-surface);
}

.cases__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 2rem;
}

.case-card {
	background-color: var(--color-background);
	border: 1px solid var(--color-border);
	border-radius: 1rem;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.case-card__image-wrapper {
	width: 100%;
	aspect-ratio: 16 / 9;
	overflow: hidden;
}

.case-card__image-wrapper img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.case-card__content {
	padding: 1.5rem;
	display: flex;
	flex-direction: column;
	flex-grow: 1; /* Makes content fill the space */
}

.case-card__category {
	display: inline-block;
	background-color: var(--color-surface);
	color: var(--color-primary);
	padding: 0.25rem 0.75rem;
	border-radius: 999px;
	font-size: 0.875rem;
	font-weight: 500;
	margin-bottom: 1rem;
	align-self: flex-start; /* Align to the start of the flex container */
}

.case-card__title {
	font-size: 1.5rem;
	margin-bottom: 0.75rem;
}

.case-card__description {
	color: var(--color-secondary-text);
	line-height: 1.6;
	margin-bottom: 1.5rem;
	flex-grow: 1; /* Pushes the link to the bottom */
}

.case-card__link {
	color: var(--color-primary);
	font-weight: 500;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	align-self: flex-start; /* Align to the start of the flex container */
	transition: gap 0.3s ease;
}

.case-card__link:hover {
	color: var(--color-text);
	gap: 0.75rem; /* Animate icon position on hover */
}

.case-card__link i {
	width: 20px;
	height: 20px;
}

/* Responsive */
@media (min-width: 768px) {
	.cases__grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 2.5rem;
	}
}

/* assets/css/style.css */

/* E T H I C S   S E C T I O N */
.ethics {
	padding: 6rem 0;
}

.ethics__container {
	display: grid;
	grid-template-columns: 1fr;
	gap: 3rem;
	align-items: flex-start;
}

.ethics__title {
	font-size: clamp(2rem, 5vw, 2.75rem);
	margin-bottom: 1.5rem;
}

.ethics__description {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	line-height: 1.7;
	max-width: 450px;
}

.ethics__accordion {
	border-top: 1px solid var(--color-border);
}

.accordion-item {
	border-bottom: 1px solid var(--color-border);
}

.accordion-item__header {
	width: 100%;
	background: none;
	border: none;
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 1.5rem 0.5rem;
	cursor: pointer;
	text-align: left;
}

.accordion-item__title {
	font-family: var(--font-family-heading);
	font-size: 1.25rem;
	font-weight: 500;
	color: var(--color-text);
}

.accordion-item__icon {
	color: var(--color-primary);
	transition: transform 0.3s ease-in-out;
}

.accordion-item__content {
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.4s ease-in-out;
}

.accordion-item__text {
	padding: 0 0.5rem 1.5rem;
	color: var(--color-secondary-text);
	line-height: 1.6;
}

/* Active State for Accordion */
.accordion-item--active .accordion-item__icon {
	transform: rotate(180deg);
}

/* Responsive */
@media (min-width: 1024px) {
	.ethics__container {
		grid-template-columns: 1fr 1.2fr;
		gap: 5rem;
	}
}

/* assets/css/style.css */

/* C O N T A C T   S E C T I O N */
.contact {
	padding: 6rem 0;
	background-color: var(--color-surface);
}

.contact__container {
	display: grid;
	grid-template-columns: 1fr;
	gap: 3rem;
	align-items: center;
}

.contact__title {
	font-size: clamp(2rem, 5vw, 2.75rem);
	margin-bottom: 1.5rem;
}

.contact__description {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	line-height: 1.7;
	max-width: 450px;
}

/* Form Styles */
.contact-form {
	display: grid;
	gap: 1.5rem;
}

.form-label {
	/* Visually hidden but accessible for screen readers */
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

.form-input {
	width: 100%;
	padding: 1rem;
	background-color: var(--color-background);
	border: 1px solid var(--color-border);
	border-radius: 0.5rem;
	color: var(--color-text);
	font-size: 1rem;
	font-family: var(--font-family-base);
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input::placeholder {
	color: var(--color-secondary-text);
}

.form-input:focus {
	outline: none;
	border-color: var(--color-primary);
	box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

.form-group--checkbox {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
}

.form-checkbox {
	flex-shrink: 0;
	margin-top: 5px;
	width: 1.25em;
	height: 1.25em;
	accent-color: var(--color-primary);
}

.form-checkbox-label {
	font-size: 0.875rem;
	color: var(--color-secondary-text);
	line-height: 1.5;
}

.form-checkbox-label a {
	text-decoration: underline;
}

.form-submit-button {
	width: 100%;
	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 1rem 2.5rem;
	border-radius: 999px;
	font-weight: 500;
	font-size: 1rem;
	transition: transform 0.3s ease, background-color 0.3s ease;
	border: 2px solid var(--color-primary);
	cursor: pointer;
}

.form-submit-button:hover {
	transform: translateY(-3px);
	background-color: transparent;
	color: var(--color-primary);
}

.form-success {
	display: flex;
	align-items: center;
	gap: 1rem;
	padding: 1.5rem;
	background-color: #1a3a36; /* Dark green */
	border: 1px solid var(--color-primary);
	border-radius: 0.75rem;
	color: var(--color-text);
	animation: fadeIn 0.5s ease-in-out;
}
.form-success i {
	color: var(--color-primary);
}

/* Responsive */
@media (min-width: 1024px) {
	.contact__container {
		grid-template-columns: 1fr 1.2fr;
		gap: 5rem;
	}
}

/* assets/css/style.css */

/* C O O K I E   P O P U P */
.cookie-popup {
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
	padding: 1.5rem var(--container-padding);
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 1rem;
	z-index: 200;

	transform: translateY(100%);
	transition: transform 0.5s ease-in-out;
}

.cookie-popup--show {
	transform: translateY(0);
}

.cookie-popup__text {
	color: var(--color-secondary-text);
	font-size: 0.875rem;
}

.cookie-popup__text a {
	color: var(--color-primary);
	text-decoration: underline;
}

.cookie-popup__btn {
	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 0.5rem 1.25rem;
	border-radius: 999px;
	border: none;
	cursor: pointer;
	font-weight: 500;
	font-size: 0.875rem;
	transition: background-color 0.3s ease;
}
.cookie-popup__btn:hover {
	background-color: var(--color-text);
}

/* Responsive for Cookie Popup */
@media (min-width: 768px) {
	.cookie-popup {
		flex-direction: row;
		justify-content: space-between;
		align-items: center;
		padding-left: calc(
			(100vw - var(--container-width)) / 2 + var(--container-padding)
		);
		padding-right: calc(
			(100vw - var(--container-width)) / 2 + var(--container-padding)
		);
	}
}

/* assets/css/style.css */

/* S T A T I C   P A G E S   S T Y L E S (privacy.html, terms.html, etc.) */

.pages {
	padding: 4rem 0;
}

.pages .container {
	max-width: 800px; /* Limit width for better readability */
}

.pages h1 {
	font-size: 1.5rem;
	margin-bottom: 2rem;
	border-bottom: 1px solid var(--color-border);
	padding-bottom: 1rem;
}

.pages h2 {
	font-size: 1.5rem;
	margin-top: 3rem;
	margin-bottom: 1.5rem;
}

.pages p,
.pages li {
	font-size: 1.125rem;
	color: var(--color-secondary-text);
	line-height: 1.8;
	margin-bottom: 1.5rem;
}

.pages ul {
	list-style: disc;
	padding-left: 25px;
}

.pages strong {
	color: var(--color-text);
	font-weight: 500;
}

.pages a {
	text-decoration: underline;
}

.pages a:hover {
	color: var(--color-text);
}