/*
 * Google Fonts Import
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Roboto+Mono:wght@400;500&display=swap');

/*
 * CSS Variables
 */
:root {
	--color-dark-bg: #0d1b2a;
	--color-primary-text: #e0e1dd;
	--color-secondary-bg: #415a77;
	--color-accent: #778da9;
	--color-light-accent: #ffffff;

	--font-primary: 'Inter', sans-serif;
	--font-secondary: 'Roboto Mono', monospace;

	--header-height: 80px;
}

/*
 * Global Styles & Resets
 */
*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

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

body {
	background-color: var(--color-dark-bg);
	color: var(--color-primary-text);
	font-family: var(--font-primary);
	line-height: 1.6;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
}

main {
	flex-grow: 1;
}

ul {
	list-style: none;
}

a {
	text-decoration: none;
	color: inherit;
	transition: color 0.3s ease;
}

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

/*
 * Utility Classes
 */
.container {
	width: 100%;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

/*
 * Logo Styles
 */
.logo {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	font-family: var(--font-secondary);
	font-weight: 500;
	font-size: 1.25rem;
	color: var(--color-light-accent);
}

.logo__icon {
	color: var(--color-accent);
}
.logo:hover .logo__icon {
	color: var(--color-light-accent);
	transition: color 0.3s ease;
}

/*
 * Header Styles
 */
.header {
	background-color: rgba(13, 27, 42, 0.8);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--color-secondary-bg);
	position: sticky;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 100;
	height: var(--header-height);
}

.header__container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 100%;
}

.header__nav-list {
	display: flex;
	align-items: center;
	gap: 30px;
}

.header__nav-link {
	font-size: 0.95rem;
	padding: 10px 0;
	position: relative;
	color: var(--color-primary-text);
}

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

.header__nav-link:hover {
	color: var(--color-light-accent);
}

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

.header__nav-link--button {
	border: 1px solid var(--color-accent);
	padding: 8px 20px;
	border-radius: 5px;
}

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

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

.header__menu-button {
	display: none;
	background: none;
	border: none;
	color: var(--color-primary-text);
	cursor: pointer;
}

/*
 * Footer Styles
 */
.footer {
	background-color: #08111a;
	padding: 60px 0 0;
	border-top: 1px solid var(--color-secondary-bg);
}

.footer__container {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 2fr;
	gap: 40px;
	padding-bottom: 40px;
}

.footer__column--main .logo {
	margin-bottom: 15px;
}

.footer__tagline {
	font-size: 0.9rem;
	color: var(--color-accent);
	max-width: 250px;
}

.footer__title {
	font-family: var(--font-secondary);
	font-size: 1.1rem;
	margin-bottom: 20px;
	color: var(--color-light-accent);
}

.footer__list {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.footer__link {
	font-size: 0.9rem;
	color: var(--color-primary-text);
}
.footer__link:hover {
	color: var(--color-light-accent);
	text-decoration: underline;
}

.footer__list--contacts .footer__link {
	display: inline-flex;
	align-items: center;
	gap: 10px;
}

.footer__icon {
	width: 18px;
	height: 18px;
	color: var(--color-accent);
}

.footer__bottom {
	border-top: 1px solid var(--color-secondary-bg);
	padding: 20px 0;
	text-align: center;
	font-size: 0.85rem;
	color: var(--color-accent);
}

/*
 * Responsive Styles (Mobile-first)
 */
@media (max-width: 992px) {
	.footer__container {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	.header__nav {
		position: fixed;
		top: var(--header-height);
		left: 0;
		width: 100%;
		height: calc(100vh - var(--header-height));
		background-color: var(--color-dark-bg);
		transform: translateX(-100%);
		transition: transform 0.4s ease-in-out;
		padding: 40px 20px;
	}

	.header__nav.is-active {
		transform: translateX(0);
	}

	.header__nav-list {
		flex-direction: column;
		align-items: flex-start;
		gap: 25px;
	}

	.header__nav-link {
		font-size: 1.2rem;
	}

	.header__menu-button {
		display: block;
	}

	.footer__container {
		grid-template-columns: 1fr;
		text-align: center;
	}

	.footer__column--main,
	.footer__list--contacts .footer__link {
		margin: 0 auto;
		justify-content: center;
	}

	.footer__tagline {
		margin: 0 auto;
	}
}

/*
 * Hero Section Styles
 */
.hero {
	position: relative;
	min-height: calc(100vh - var(--header-height));
	display: flex;
	align-items: center;
	padding: 80px 0;
	overflow: hidden; /* Щоб вузли не виходили за межі секції */
}

.hero__container {
	position: relative;
	z-index: 2;
}

.hero__content {
	max-width: 750px;
	/* Анімація появи контенту */
	animation: fadeIn 1s ease-out forwards;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.hero__title {
	font-size: 3.5rem;
	font-weight: 700;
	line-height: 1.2;
	margin-bottom: 20px;
	font-family: var(--font-primary);
}

.hero__highlight {
	font-family: var(--font-secondary);
	color: var(--color-accent);
	/* Ефект курсору друкарської машинки */
	border-right: 3px solid var(--color-accent);
	animation: blink 0.7s infinite;
	padding-right: 5px;
}

@keyframes blink {
	0%,
	100% {
		border-color: transparent;
	}
	50% {
		border-color: var(--color-accent);
	}
}

.hero__description {
	font-size: 1.1rem;
	max-width: 600px;
	margin-bottom: 40px;
	color: var(--color-primary-text);
	opacity: 0.9;
}

.hero__cta {
	display: inline-block;
	background-color: var(--color-light-accent);
	color: var(--color-dark-bg);
	padding: 15px 35px;
	font-size: 1rem;
	font-weight: 500;
	border-radius: 5px;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero__cta:hover {
	transform: translateY(-3px);
	box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

/* Background Nodes Animation */
.hero__background-nodes {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
}

.hero__node {
	position: absolute;
	background-color: rgba(65, 90, 119, 0.2);
	border-radius: 50%;
	animation: float 20s infinite ease-in-out;
}

.hero__node--1 {
	width: 150px;
	height: 150px;
	top: 10%;
	left: 5%;
	animation-duration: 25s;
}

.hero__node--2 {
	width: 50px;
	height: 50px;
	top: 20%;
	right: 15%;
	animation-duration: 18s;
	animation-delay: 2s;
}

.hero__node--3 {
	width: 100px;
	height: 100px;
	bottom: 15%;
	left: 20%;
	animation-duration: 22s;
	animation-delay: 4s;
}

.hero__node--4 {
	width: 200px;
	height: 200px;
	bottom: 5%;
	right: 5%;
	animation-duration: 30s;
}

.hero__node--5 {
	width: 75px;
	height: 75px;
	top: 50%;
	left: 50%;
	animation-duration: 15s;
	animation-delay: 1s;
}

@keyframes float {
	0% {
		transform: translateY(0) translateX(0);
	}
	50% {
		transform: translateY(-20px) translateX(10px);
	}
	100% {
		transform: translateY(0) translateX(0);
	}
}

/* Responsive adjustments for Hero */
@media (max-width: 768px) {
	.hero {
		text-align: center;
		min-height: 80vh;
	}
	.hero__title {
		font-size: 2.5rem;
	}
	.hero__description {
		font-size: 1rem;
		margin-left: auto;
		margin-right: auto;
	}
}

/*
 * Section Header Styles (Reusable)
 */
.section-header {
	text-align: center;
	margin-bottom: 60px;
}

.section-header__title {
	font-size: 2.5rem;
	font-family: var(--font-primary);
	margin-bottom: 15px;
	font-weight: 700;
}

.section-header__subtitle {
	font-size: 1.1rem;
	max-width: 600px;
	margin: 0 auto;
	color: var(--color-accent);
}

/*
 * Principles Section Styles
 */
.principles {
	padding: 100px 0;
	background-color: var(--color-secondary-bg);
}

.principles__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 30px;
}

.principles__card {
	background-color: var(--color-dark-bg);
	padding: 40px 30px;
	border-radius: 8px;
	border: 1px solid transparent;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.principles__card:hover {
	transform: translateY(-8px);
	border-color: var(--color-accent);
}

.principles__icon-wrapper {
	width: 60px;
	height: 60px;
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: var(--color-secondary-bg);
	border-radius: 50%;
	margin-bottom: 25px;
}

.principles__icon-wrapper i {
	width: 28px;
	height: 28px;
	color: var(--color-light-accent);
}

.principles__card-title {
	font-size: 1.5rem;
	font-family: var(--font-secondary);
	margin-bottom: 15px;
	color: var(--color-light-accent);
}

.principles__card-description {
	font-size: 0.95rem;
	color: var(--color-primary-text);
	opacity: 0.9;
}

/* Responsive adjustments for Principles */
@media (max-width: 768px) {
	.principles {
		padding: 80px 0;
	}
	.section-header__title {
		font-size: 2rem;
	}
}

/*
 * Platforms Section Styles
 */
.platforms {
	padding: 100px 0;
	background-color: var(--color-dark-bg);
}

.platforms__tabs-nav {
	display: flex;
	justify-content: center;
	gap: 15px;
	margin-bottom: 50px;
	flex-wrap: wrap;
}

.platforms__tab-btn {
	background-color: transparent;
	color: var(--color-primary-text);
	border: 1px solid var(--color-secondary-bg);
	padding: 12px 25px;
	font-size: 1rem;
	font-family: var(--font-primary);
	border-radius: 50px;
	cursor: pointer;
	transition: all 0.3s ease;
}

.platforms__tab-btn:hover {
	background-color: var(--color-secondary-bg);
	color: var(--color-light-accent);
}

.platforms__tab-btn.is-active {
	background-color: var(--color-accent);
	border-color: var(--color-accent);
	color: var(--color-light-accent);
}

.platforms__tab-item {
	display: none;
	grid-template-columns: 1fr 1fr;
	align-items: center;
	gap: 60px;
	animation: fadeIn 0.5s ease-out forwards;
}

.platforms__tab-item.is-active {
	display: grid;
}

.platforms__content-title {
	font-size: 2rem;
	font-weight: 700;
	margin-bottom: 20px;
}

.platforms__content-text p {
	font-size: 1.05rem;
	margin-bottom: 30px;
	opacity: 0.9;
	max-width: 500px;
}

.platforms__tech-icons {
	display: flex;
	align-items: center;
	gap: 15px;
	color: var(--color-accent);
}

.platforms__tech-icons span {
	font-family: var(--font-secondary);
	color: var(--color-primary-text);
}

.platforms__tech-icons i {
	width: 28px;
	height: 28px;
}

.platforms__content-visual img {
	border-radius: 8px;
	border: 1px solid var(--color-secondary-bg);
}

/* Responsive adjustments for Platforms */
@media (max-width: 992px) {
	.platforms__tab-item {
		grid-template-columns: 1fr;
	}
	.platforms__content-visual {
		margin-top: 40px;
	}
}
@media (max-width: 768px) {
	.platforms {
		padding: 80px 0;
	}
	.platforms__content-title {
		font-size: 1.8rem;
	}
	.platforms__content-text {
		text-align: center;
	}
	.platforms__tech-icons {
		justify-content: center;
	}
}

/*
 * Stack Section Styles
 */
.stack {
	padding: 100px 0;
	background-color: var(--color-secondary-bg);
}

.stack__container {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 40px;
}

.stack__category-title {
	font-size: 1.2rem;
	font-family: var(--font-secondary);
	color: var(--color-light-accent);
	margin-bottom: 20px;
	padding-bottom: 10px;
	border-bottom: 1px solid var(--color-accent);
}

.stack__items {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

.stack__item {
	background-color: var(--color-dark-bg);
	color: var(--color-primary-text);
	padding: 8px 15px;
	border-radius: 5px;
	font-size: 0.9rem;
	font-family: var(--font-secondary);
	border: 1px solid var(--color-dark-bg);
	transition: all 0.3s ease;
}

.stack__item:hover {
	color: var(--color-light-accent);
	border-color: var(--color-accent);
	transform: translateY(-2px);
}

/* Responsive adjustments for Stack */
@media (max-width: 768px) {
	.stack {
		padding: 80px 0;
	}
}

/*
 * Cases Section Styles
 */
.cases {
	padding: 100px 0;
	background-color: var(--color-dark-bg);
}

.cases__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 30px;
}

.cases__card {
	background-color: var(--color-secondary-bg);
	border-radius: 8px;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	border: 1px solid transparent;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.cases__card:hover {
	transform: translateY(-8px);
	border-color: var(--color-accent);
}

.cases__card-image {
	overflow: hidden;
}

.cases__card-image img {
	width: 100%;
	aspect-ratio: 16 / 10;
	object-fit: cover;
	transition: transform 0.4s ease;
}

.cases__card:hover .cases__card-image img {
	transform: scale(1.05);
}

.cases__card-content {
	padding: 25px;
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}

.cases__card-category {
	display: inline-block;
	align-self: flex-start;
	background-color: var(--color-accent);
	color: var(--color-light-accent);
	padding: 4px 12px;
	border-radius: 50px;
	font-size: 0.8rem;
	font-weight: 500;
	margin-bottom: 15px;
}

.cases__card-title {
	font-size: 1.4rem;
	margin-bottom: 10px;
	font-weight: 700;
	color: var(--color-light-accent);
}

.cases__card-description {
	font-size: 0.95rem;
	margin-bottom: 20px;
	flex-grow: 1;
}

.cases__card-stack {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: auto;
}

.cases__card-stack-item {
	background-color: var(--color-dark-bg);
	color: var(--color-primary-text);
	padding: 5px 10px;
	border-radius: 4px;
	font-size: 0.8rem;
	font-family: var(--font-secondary);
}

/*
 * Contact Section Styles
 */
.contact {
	padding: 100px 0;
	background-color: var(--color-secondary-bg);
}

.contact__grid {
	display: grid;
	grid-template-columns: 1fr 1.5fr;
	gap: 60px;
	align-items: center;
}

.contact__info-title {
	font-size: 1.8rem;
	margin-bottom: 15px;
	font-weight: 700;
}

.contact__info p {
	margin-bottom: 30px;
	opacity: 0.9;
}

.contact__info-list {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.contact__info-list a,
.contact__info-list span {
	display: inline-flex;
	align-items: center;
	gap: 15px;
	font-size: 1rem;
}

.contact__info-list i {
	color: var(--color-accent);
}

.contact__form {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.form-group {
	display: flex;
	flex-direction: column;
}

.form-label {
	font-size: 0.9rem;
	margin-bottom: 8px;
	opacity: 0.9;
}

.form-input {
	width: 100%;
	padding: 12px 15px;
	background-color: var(--color-dark-bg);
	border: 1px solid var(--color-secondary-bg);
	color: var(--color-primary-text);
	border-radius: 5px;
	font-size: 1rem;
	font-family: var(--font-primary);
	transition: border-color 0.3s ease;
}

.form-input:focus {
	outline: none;
	border-color: var(--color-accent);
}

.form-input.is-invalid {
	border-color: #e74c3c;
}

.form-group--checkbox {
	flex-direction: row;
	align-items: center;
	gap: 10px;
	font-size: 0.9rem;
}

.form-group--checkbox label {
	margin: 0;
}

.form-group--checkbox a {
	color: var(--color-accent);
	text-decoration: underline;
}

.contact__form-button {
	background-color: var(--color-light-accent);
	color: var(--color-dark-bg);
	padding: 15px 35px;
	font-size: 1rem;
	font-weight: 500;
	border-radius: 5px;
	border: none;
	cursor: pointer;
	align-self: flex-start;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact__form-button:hover {
	transform: translateY(-3px);
	box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.form-success-message {
	display: none; /* Initially hidden */
	margin-top: 20px;
	padding: 20px;
	background-color: #27ae601a;
	border: 1px solid #27ae60;
	color: #27ae60;
	border-radius: 5px;
	text-align: center;
	font-weight: 500;
	align-items: center;
	justify-content: center;
	gap: 10px;
}

.form-success-message.is-visible {
	display: flex; /* Show it */
}

/* Responsive adjustments for Contact */
@media (max-width: 992px) {
	.contact__grid {
		grid-template-columns: 1fr;
	}
}

/*
 * Cookie Pop-up Styles
 */
.cookie-popup {
	display: none; /* Initially hidden */
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	background-color: #08111a;
	padding: 20px 0;
	z-index: 200;
	border-top: 1px solid var(--color-secondary-bg);
	box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.2);
	animation: slideUp 0.5s ease-out forwards;
}

.cookie-popup.is-visible {
	display: block;
}

@keyframes slideUp {
	from {
		transform: translateY(100%);
	}
	to {
		transform: translateY(0);
	}
}

.cookie-popup__container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 20px;
}

.cookie-popup__text {
	font-size: 0.9rem;
	opacity: 0.9;
}

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

.cookie-popup__button {
	background-color: var(--color-light-accent);
	color: var(--color-dark-bg);
	border: none;
	padding: 10px 25px;
	border-radius: 5px;
	cursor: pointer;
	font-size: 0.9rem;
	font-weight: 500;
	white-space: nowrap;
	transition: background-color 0.3s ease;
}

.cookie-popup__button:hover {
	background-color: #dcdcdc;
}

/* Responsive adjustments for Cookie Pop-up */
@media (max-width: 768px) {
	.cookie-popup__container {
		flex-direction: column;
		text-align: center;
	}
}

/*
 * Generic Pages Styles (Privacy, Terms, etc.)
 */
.pages {
	padding: 80px 0;
}

.pages .container {
	max-width: 800px; /* Ограничиваем ширину для лучшей читаемости */
}

.pages h1 {
	font-size: 1.8rem;
	font-weight: 700;
	margin-bottom: 30px;
	color: var(--color-light-accent);
}

.pages h2 {
	font-size: 1.5rem;
	font-family: var(--font-secondary);
	margin-top: 40px;
	margin-bottom: 20px;
	color: var(--color-primary-text);
}

.pages p {
	font-size: 1.05rem;
	line-height: 1.7;
	margin-bottom: 20px;
	opacity: 0.9;
}

.pages ul,
.pages ol {
	margin-bottom: 20px;
	padding-left: 25px;
}

.pages li {
	margin-bottom: 12px;
	font-size: 1.05rem;
	line-height: 1.7;
}

.pages a {
	color: var(--color-accent);
	text-decoration: underline;
	transition: color 0.3s ease;
}

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

.pages strong {
	font-weight: 700;
	color: var(--color-primary-text);
}