/* GLOBAL STYLES */
:root {
	--color-background: #0d1117;
	--color-surface: #161b22;
	--color-primary: #58a6ff;
	--color-text-primary: #e6edf3;
	--color-text-secondary: #8b949e;
	--color-border: #30363d;

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

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

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font-secondary);
	background-color: var(--color-background);
	color: var(--color-text-primary);
	font-size: 16px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

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

h1,
h2,
h3,
h4 {
	font-family: var(--font-primary);
	font-weight: 700;
}

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

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

ul {
	list-style: none;
}

/* LOGO */
.logo {
	display: flex;
	align-items: center;
	gap: 10px;
	color: var(--color-text-primary);
	font-family: var(--font-primary);
	font-weight: 700;
	font-size: 24px;
}

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

/* HEADER */
.header {
	background-color: var(--color-background);
	border-bottom: 1px solid var(--color-border);
	padding: 20px 0;
	position: sticky;
	top: 0;
	z-index: 100;
	backdrop-filter: blur(10px);
	background-color: rgba(13, 17, 23, 0.8);
}

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

.header__nav {
	display: none;
}

.header__menu-link {
	color: var(--color-text-secondary);
	font-family: var(--font-primary);
	font-weight: 500;
	padding: 8px 16px;
	border-radius: 6px;
	transition: background-color 0.3s ease, color 0.3s ease;
}

.header__menu-link:hover {
	background-color: var(--color-surface);
	color: var(--color-text-primary);
}

.header__burger {
	background: none;
	border: none;
	color: var(--color-text-primary);
	cursor: pointer;
	padding: 5px;
}

.header__burger i {
	width: 28px;
	height: 28px;
}

/* MOBILE MENU */
.header__mobile-menu {
	position: fixed;
	top: 81px; /* Висота хедера */
	left: 0;
	width: 100%;
	height: calc(100vh - 81px);
	background-color: var(--color-background);
	transform: translateX(100%);
	transition: transform 0.3s ease-in-out;
	padding: 20px;
}

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

.header__mobile-menu-list {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 20px;
}

.header__mobile-menu-link {
	color: var(--color-text-primary);
	font-size: 22px;
	font-family: var(--font-primary);
}

/* FOOTER */
.footer {
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
	padding: 60px 0;
}

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

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

.footer__copyright {
	color: var(--color-text-secondary);
	font-size: 14px;
}

.footer__title {
	color: var(--color-text-primary);
	font-size: 18px;
	margin-bottom: 16px;
}

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

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

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

.footer__list--contacts {
	gap: 16px;
}

.footer__list--contacts a,
.footer__address {
	display: flex;
	align-items: center;
	gap: 10px;
}

.footer__icon {
	width: 20px;
	height: 20px;
	flex-shrink: 0;
}

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

@media (min-width: 1024px) {
	.header__nav {
		display: block;
	}

	.header__menu {
		display: flex;
		align-items: center;
		gap: 10px;
	}

	.header__burger {
		display: none;
	}

	.footer__container {
		grid-template-columns: 2fr 1fr 1fr 1.5fr;
		gap: 30px;
	}
}

/* BUTTON */
.button {
	display: inline-block;
	background-color: var(--color-primary);
	color: var(--color-background);
	font-family: var(--font-primary);
	font-weight: 500;
	font-size: 16px;
	padding: 12px 24px;
	border-radius: 6px;
	border: 2px solid transparent;
	transition: background-color 0.3s ease, color 0.3s ease,
		border-color 0.3s ease;
}

.button:hover {
	background-color: transparent;
	border-color: var(--color-primary);
	color: var(--color-primary);
}

/* HERO SECTION */
.hero {
	padding: 80px 0;
	overflow: hidden;
}

.hero__container {
	display: grid;
	grid-template-columns: 1fr;
	gap: 40px;
	align-items: center;
}

.hero__content {
	text-align: center;
}

.hero__headline {
	font-size: 36px;
	line-height: 1.2;
	margin-bottom: 20px;
	font-weight: 700;
}

.hero__headline--animated {
	color: var(--color-primary);
	position: relative;
}

/* Typing animation cursor */
.hero__headline--animated::after {
	content: '|';
	display: inline-block;
	animation: blink 0.7s infinite;
	font-weight: 400;
}

@keyframes blink {
	0%,
	100% {
		opacity: 1;
	}
	50% {
		opacity: 0;
	}
}

.hero__subheadline {
	font-size: 18px;
	color: var(--color-text-secondary);
	max-width: 600px;
	margin: 0 auto 30px;
}

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

.hero__image {
	max-width: 100%;
	height: auto;
	border-radius: 8px;
}

/* ADAPTIVE STYLES */
@media (min-width: 768px) {
	.hero__headline {
		font-size: 48px;
	}
}

@media (min-width: 1024px) {
	.hero {
		padding: 120px 0;
	}

	.hero__container {
		grid-template-columns: 1fr 1fr;
		gap: 60px;
	}

	.hero__content {
		text-align: left;
	}

	.hero__subheadline {
		margin: 0 0 30px;
	}
}

/* SECTION HEADER */
.section-header {
	text-align: center;
	max-width: 700px;
	margin: 0 auto 60px;
}

.section-header__title {
	font-size: 32px;
	margin-bottom: 16px;
}

.section-header__subtitle {
	font-size: 18px;
	color: var(--color-text-secondary);
	line-height: 1.6;
}

/* FEATURES SECTION */
.features {
	padding: 80px 0;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
}

.features__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 30px;
}

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

.features__card:hover {
	transform: translateY(-5px);
	border-color: var(--color-primary);
}

.features__card-icon {
	width: 48px;
	height: 48px;
	color: var(--color-primary);
	margin-bottom: 20px;
}

.features__card-icon i {
	width: 100%;
	height: 100%;
}

.features__card-title {
	font-size: 22px;
	margin-bottom: 10px;
	color: var(--color-text-primary);
}

.features__card-text {
	color: var(--color-text-secondary);
}

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

	.section-header__title {
		font-size: 36px;
	}
}

@media (min-width: 1024px) {
	.features {
		padding: 100px 0;
	}

	.features__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/* TIMELINE SECTION */
.timeline-section {
	padding: 80px 0;
}

.timeline {
	position: relative;
	max-width: 900px;
	margin: 0 auto;
}

/* The vertical line */
.timeline::after {
	content: '';
	position: absolute;
	width: 3px;
	background-color: var(--color-border);
	top: 0;
	bottom: 0;
	left: 20px;
}

.timeline__item {
	padding: 10px 0 30px 60px;
	position: relative;
}

.timeline__content {
	padding: 20px;
	background-color: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: 8px;
	position: relative;
}

/* The circle on the timeline */
.timeline__item::after {
	content: '';
	position: absolute;
	width: 20px;
	height: 20px;
	background-color: var(--color-background);
	border: 3px solid var(--color-primary);
	top: 22px;
	left: 11.5px;
	border-radius: 50%;
	z-index: 1;
}

.timeline__stage {
	display: inline-block;
	font-size: 12px;
	font-weight: 500;
	color: var(--color-primary);
	background-color: rgba(88, 166, 255, 0.1);
	padding: 4px 8px;
	border-radius: 4px;
	margin-bottom: 10px;
}

.timeline__title {
	font-size: 20px;
	margin-bottom: 8px;
}

.timeline__text {
	color: var(--color-text-secondary);
	font-size: 15px;
}

/* ADAPTIVE STYLES */
@media screen and (min-width: 768px) {
	.timeline-section {
		padding: 100px 0;
	}

	.timeline::after {
		left: 50%;
		margin-left: -1.5px;
	}

	.timeline__item {
		padding: 10px 40px;
		width: 50%;
	}

	/* Left side items */
	.timeline__item:nth-child(odd) {
		left: 0;
		padding-left: 0;
		padding-right: 50px;
	}

	/* Right side items */
	.timeline__item:nth-child(even) {
		left: 50%;
		padding-right: 0;
		padding-left: 50px;
	}

	/* Circles for all items */
	.timeline__item::after {
		left: auto;
		right: -10px;
		top: 22px;
	}

	.timeline__item:nth-child(even)::after {
		left: -10px;
	}

	/* Arrows pointing to timeline */
	.timeline__content::before {
		content: ' ';
		height: 0;
		position: absolute;
		top: 22px;
		width: 0;
		z-index: 1;
		border: medium solid var(--color-border);
	}

	.timeline__item:nth-child(odd) .timeline__content::before {
		right: -11px;
		border-width: 10px 0 10px 10px;
		border-color: transparent transparent transparent var(--color-border);
	}

	.timeline__item:nth-child(even) .timeline__content::before {
		left: -11px;
		border-width: 10px 10px 10px 0;
		border-color: transparent var(--color-border) transparent transparent;
	}
}

/* TECH STACK SECTION */
.tech-stack {
	padding: 80px 0;
	background-color: var(--color-background);
}

.tech-stack__grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
	gap: 20px;
	max-width: 800px;
	margin: 0 auto;
}

.tech-stack__item {
	position: relative;
	display: flex;
	justify-content: center;
	align-items: center;
	background-color: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: 8px;
	padding: 20px;
	aspect-ratio: 1 / 1;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.tech-stack__item:hover {
	transform: scale(1.1);
	border-color: var(--color-primary);
}

.tech-stack__item svg {
	width: 60%;
	height: 60%;
	fill: var(--color-text-secondary);
	transition: fill 0.3s ease;
}

.tech-stack__item:hover svg {
	fill: var(--color-text-primary);
}

/* Tooltip styles */
.tech-stack__item::before {
	content: attr(data-tooltip);
	position: absolute;
	bottom: 110%;
	left: 50%;
	transform: translateX(-50%);

	background-color: var(--color-primary);
	color: var(--color-background);
	padding: 6px 10px;
	border-radius: 5px;
	font-size: 14px;
	font-weight: 500;
	white-space: nowrap;

	opacity: 0;
	visibility: hidden;
	transition: opacity 0.3s ease, visibility 0.3s ease;
	z-index: 10;
}

.tech-stack__item:hover::before {
	opacity: 1;
	visibility: visible;
}

/* ADAPTIVE STYLES */
@media (min-width: 1024px) {
	.tech-stack {
		padding: 100px 0;
	}
}

/* CASES SECTION */
.cases {
	padding: 80px 0;
	background-color: var(--color-surface);
}

.cases__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 30px;
}

.case-card {
	background-color: var(--color-background);
	border: 1px solid var(--color-border);
	border-radius: 8px;
	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;
}

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

.case-card__content {
	padding: 25px;
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}

.case-card__category {
	display: inline-block;
	font-size: 12px;
	font-weight: 500;
	color: var(--color-primary);
	background-color: rgba(88, 166, 255, 0.1);
	padding: 4px 8px;
	border-radius: 4px;
	margin-bottom: 12px;
	align-self: flex-start;
}

.case-card__title {
	font-size: 22px;
	margin-bottom: 10px;
}

.case-card__description {
	color: var(--color-text-secondary);
	margin-bottom: 20px;
	flex-grow: 1;
}

.case-card__tags {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.case-card__tag {
	font-size: 12px;
	color: var(--color-text-secondary);
	background-color: var(--color-surface);
	padding: 4px 10px;
	border-radius: 4px;
	border: 1px solid var(--color-border);
}

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

@media (min-width: 1024px) {
	.cases {
		padding: 100px 0;
	}
}

/* CONTACT SECTION */
.contact {
	padding: 80px 0;
}

.contact__wrapper {
	display: grid;
	grid-template-columns: 1fr;
	gap: 60px;
	max-width: 1100px;
	margin: 0 auto;
}

/* Form Styles */
.form-group {
	margin-bottom: 20px;
}

.form-group__label {
	display: block;
	font-size: 14px;
	color: var(--color-text-secondary);
	margin-bottom: 8px;
}

.form-group__input {
	width: 100%;
	padding: 12px;
	background-color: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: 6px;
	color: var(--color-text-primary);
	font-size: 16px;
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group__input:focus {
	outline: none;
	border-color: var(--color-primary);
	box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
}

/* Checkbox Styles */
.form-group--checkbox {
	display: flex;
	align-items: flex-start;
	gap: 10px;
}

.form-group__checkbox {
	margin-top: 5px;
	flex-shrink: 0;
	width: 1.2em;
	height: 1.2em;
}

.form-group__checkbox-label {
	font-size: 14px;
	color: var(--color-text-secondary);
}

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

/* Form Message Styles */
.form-message {
	margin-top: 20px;
	padding: 12px;
	border-radius: 6px;
	font-size: 14px;
	display: none; /* Hidden by default */
}

.form-message--success {
	background-color: rgba(46, 160, 67, 0.15);
	border: 1px solid #2ea043;
	color: #58a6ff;
}

.form-message--error {
	background-color: rgba(248, 81, 73, 0.15);
	border: 1px solid #f85149;
	color: #ff7b72;
}

/* Contact Info */
.contact__info-title {
	font-size: 22px;
	margin-bottom: 12px;
}

.contact__info-text {
	color: var(--color-text-secondary);
	margin-bottom: 30px;
}

/* ADAPTIVE STYLES */
@media (min-width: 1024px) {
	.contact {
		padding: 100px 0;
	}
	.contact__wrapper {
		grid-template-columns: 1fr 0.8fr;
	}
}

/* COOKIE POP-UP */
.cookie-popup {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
	padding: 20px;
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 20px;
	z-index: 200;
	transform: translateY(100%);
	transition: transform 0.5s ease-in-out;
}

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

.cookie-popup__text {
	color: var(--color-text-secondary);
	text-align: center;
}

.cookie-popup__text a {
	text-decoration: underline;
}

.cookie-popup__button {
	flex-shrink: 0;
}

@media (max-width: 768px) {
	.cookie-popup {
		flex-direction: column;
		text-align: center;
	}
}

/* POLICY & TEXT PAGES (privacy.html, terms.html, etc.) */
.pages {
	padding: 60px 0;
}

.pages .container {
	max-width: 800px;
}

.pages h1 {
	font-size: 1.5rem;
	margin-bottom: 30px;
	color: var(--color-text-primary);
}

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

.pages p {
	color: var(--color-text-secondary);
	line-height: 1.7;
	margin-bottom: 20px;
}

.pages ul {
	list-style: disc;
	padding-left: 25px;
	margin-bottom: 20px;
	color: var(--color-text-secondary);
}

.pages li {
	margin-bottom: 10px;
}

.pages a {
	text-decoration: underline;
}

.pages a:hover {
	text-decoration: none;
}

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