/* ==========================================================================
   GLOBAL STYLES (ETAP 0)
   ========================================================================== */
:root {
	--color-background: #111827;
	--color-text: #f3f4f6;
	--color-primary: #4f46e5;
	--color-primary-light: #6366f1;
	--color-secondary: #374151;
	--color-surface: #1f2937;

	--font-body: 'Inter', sans-serif;
	--font-heading: 'Plus Jakarta Sans', sans-serif;

	--container-width: 1200px;
	--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-body);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}

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

a {
	color: var(--color-primary-light);
	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;
}

.logo {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	font-family: var(--font-heading);
	font-weight: 800;
	font-size: 1.5rem;
	color: var(--color-text);
}

.logo svg {
	width: 42px;
	height: 42px;
	color: var(--color-primary);
	transition: transform 0.3s ease;
}

.logo:hover svg {
	transform: rotate(90deg);
}

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

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

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

.header__nav-link {
	font-size: 1rem;
	font-weight: 500;
	color: var(--color-text);
	position: relative;
	padding: 0.5rem 0;
}

.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__burger {
	display: none;
	flex-direction: column;
	gap: 5px;
	background: transparent;
	border: none;
	cursor: pointer;
	z-index: 110;
}

.header__burger-line {
	width: 25px;
	height: 2px;
	background-color: var(--color-text);
	transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Mobile styles */
@media (max-width: 992px) {
	.header__nav {
		position: fixed;
		top: 0;
		right: -100%;
		width: 70%;
		max-width: 320px;
		height: 100vh;
		background-color: var(--color-surface);
		padding: 6rem 2rem;
		transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
		z-index: 105;
	}

	.header__nav.header__nav--active {
		right: 0;
	}

	.header__nav-list {
		flex-direction: column;
		align-items: flex-start;
		gap: 1.5rem;
	}

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

	.header__burger {
		display: flex;
	}

	.header__burger--active .header__burger-line:nth-child(1) {
		transform: rotate(45deg) translate(5px, 5px);
	}
	.header__burger--active .header__burger-line:nth-child(2) {
		opacity: 0;
	}
	.header__burger--active .header__burger-line:nth-child(3) {
		transform: rotate(-45deg) translate(5px, -5px);
	}
}

/* ==========================================================================
   FOOTER (ETAP 2)
   ========================================================================== */
.footer {
	padding: 4rem 0 2rem;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-secondary);
}

.footer__container {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 3rem;
}

.footer__column--main {
	grid-column: span 1;
}

.footer__copyright {
	margin-top: 1rem;
	font-size: 0.9rem;
	color: #9ca3af; /* Light gray for secondary text */
}

.footer__title {
	font-family: var(--font-heading);
	font-size: 1.1rem;
	margin-bottom: 1.5rem;
	color: var(--color-text);
}

.footer__list-item {
	margin-bottom: 0.75rem;
}

.footer__link {
	color: #d1d5db; /* Lighter gray for links */
	transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer__link:hover {
	color: var(--color-primary);
	padding-left: 5px;
}

.footer__list--contacts .footer__list-item {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
}

.footer__list--contacts .lucide {
	width: 20px;
	height: 20px;
	color: var(--color-primary);
	margin-top: 2px;
	flex-shrink: 0;
}

@media (min-width: 992px) {
	.footer__container {
		grid-template-columns: 2fr 1fr 1fr 2fr;
	}
}

/* ... (все стили из предыдущего шага) ... */

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */
.main {
	/* Добавляем отступ сверху, чтобы контент не уходил под фиксированный хедер */
	padding-top: 85px;
}

/* ==========================================================================
   BUTTON (Reusable)
   ========================================================================== */
.button {
	display: inline-block;
	padding: 0.8rem 2rem;
	background-color: var(--color-primary);
	color: var(--color-text);
	font-family: var(--font-body);
	font-weight: 500;
	font-size: 1rem;
	border-radius: 8px;
	border: 2px solid transparent;
	text-align: center;
	cursor: pointer;
	transition: background-color 0.3s ease, color 0.3s ease,
		border-color 0.3s ease;
}

.button:hover {
	background-color: var(--color-primary-light);
	color: var(--color-text);
}

/* ==========================================================================
   HERO SECTION (ETAP 3)
   ========================================================================== */
.hero {
	padding: 6rem 0;
	min-height: 80vh;
	display: flex;
	align-items: center;
}

.hero__container {
	display: grid;
	grid-template-columns: 1fr 1fr;
	align-items: center;
	gap: 4rem;
}

.hero__title {
	font-family: var(--font-heading);
	font-size: 2.5rem;
	font-weight: 800;
	line-height: 1.2;
	margin-bottom: 1.5rem;
}

.hero__text {
	font-size: 1.1rem;
	color: #d1d5db;
	max-width: 500px;
	margin-bottom: 2.5rem;
}

.hero__image-wrapper {
	display: flex;
	justify-content: center;
	align-items: center;
}

.hero__image {
	border-radius: 12px;
	max-width: 100%;
	height: auto;
	object-fit: cover;
}

/* Стили для подготовки к анимации (скрываем элементы) */
.animate-hero-element {
	opacity: 0;
	transform: translateY(20px);
}

/* Адаптация для планшетов и мобильных устройств */
@media (max-width: 992px) {
	.hero {
		padding: 4rem 0;
		text-align: center;
	}

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

	.hero__content {
		order: 2; /* Текст будет под картинкой */
	}

	.hero__image-wrapper {
		order: 1;
	}

	.hero__title {
		font-size: 1.5rem;
	}

	.hero__text {
		margin-left: auto;
		margin-right: auto;
	}
}

/* ... (все стили из предыдущего шага) ... */

/* ==========================================================================
   GENERIC SECTION STYLES
   ========================================================================== */
section {
	padding: 6rem 0;
}

.section-header {
	text-align: center;
	max-width: 700px;
	margin: 0 auto 4rem;
}

.section-header__title {
	font-family: var(--font-heading);
	font-size: 2.5rem;
	font-weight: 700;
	line-height: 1.3;
	margin-bottom: 1rem;
}

.section-header__subtitle {
	font-size: 1.1rem;
	color: #d1d5db;
	line-height: 1.6;
}

/* ==========================================================================
   CONCEPTS SECTION (ETAP 3)
   ========================================================================== */
.concepts {
	background-color: var(--color-surface);
}

.concepts__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 2rem;
}

.concept-card {
	background-color: var(--color-background);
	border: 1px solid var(--color-secondary);
	border-radius: 12px;
	padding: 2rem;
	text-align: left;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.concept-card:hover {
	transform: translateY(-8px);
	border-color: var(--color-primary);
}

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

.concept-card__icon .lucide {
	width: 40px;
	height: 40px;
}

.concept-card__title {
	font-family: var(--font-heading);
	font-size: 1.5rem;
	margin-bottom: 1rem;
}

.concept-card__text {
	color: #d1d5db;
	line-height: 1.6;
}

/* Адаптация */
@media (max-width: 768px) {
	section {
		padding: 4rem 0;
	}

	.section-header__title {
		font-size: 2rem;
	}
}

/* ... (всі стилі з попереднього кроку) ... */

/* ==========================================================================
   TECH SECTION (ETAP 3)
   ========================================================================== */
.tech {
	background-color: var(--color-background);
}

.accordion {
	max-width: 800px;
	margin: 0 auto;
}

.accordion__item {
	background-color: var(--color-surface);
	border: 1px solid var(--color-secondary);
	border-radius: 8px;
	margin-bottom: 1rem;
	transition: border-color 0.3s ease;
}

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

.accordion__button {
	display: flex;
	align-items: center;
	width: 100%;
	padding: 1.5rem 1rem;
	font-family: var(--font-body);
	font-size: 1.1rem;
	font-weight: 500;
	color: var(--color-text);
	background: none;
	border: none;
	cursor: pointer;
	text-align: left;
}

.accordion__button .lucide {
	color: var(--color-primary);
	width: 24px;
	height: 24px;
	margin-right: 1rem;
	flex-shrink: 0;
}

.accordion__icon {
	margin-left: auto;
	transition: transform 0.3s ease;
}

.accordion__button--active .accordion__icon {
	transform: rotate(180deg);
}

.accordion__title {
	font-family: var(--font-heading);
	font-size: 1.25rem;
	font-weight: 700;
	margin: 0;
	line-height: 1.2;
}

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

.accordion__content-inner {
	padding: 0 1rem 1.5rem;
	color: #d1d5db;
}

.accordion__content-inner p {
	margin: 0;
}

/* ... (все стили из предыдущего шага) ... */

/* ==========================================================================
   CASES SECTION (ETAP 3)
   ========================================================================== */
.cases {
	background-color: var(--color-surface);
}

.cases__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 2rem;
}

.case-card {
	background-color: var(--color-background);
	border-radius: 12px;
	overflow: hidden;
	border: 1px solid var(--color-secondary);
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.case-card__image-wrapper {
	aspect-ratio: 16 / 9;
}

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

.case-card__content {
	padding: 1.5rem;
}

.case-card__tag {
	display: inline-block;
	padding: 0.25rem 0.75rem;
	background-color: var(--color-primary);
	color: var(--color-text);
	border-radius: 20px;
	font-size: 0.8rem;
	font-weight: 500;
	margin-bottom: 1rem;
}

.case-card__title {
	font-family: var(--font-heading);
	font-size: 1.4rem;
	margin-bottom: 0.75rem;
}

.case-card__text {
	color: #d1d5db;
	line-height: 1.6;
}

/* ... (всі стилі з попереднього кроку) ... */

/* ==========================================================================
   AUDIENCE SECTION (ETAP 3)
   ========================================================================== */
.audience {
	background-color: var(--color-background);
}

.audience__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 2rem;
}

.audience-card {
	background-color: var(--color-surface);
	border: 1px solid var(--color-secondary);
	border-radius: 12px;
	padding: 2rem;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

.audience-card:hover {
	transform: translateY(-8px);
	border-color: var(--color-primary);
}

.audience-card__icon {
	margin-bottom: 1.5rem;
	color: var(--color-primary);
}

.audience-card__icon .lucide {
	width: 40px;
	height: 40px;
}

.audience-card__title {
	font-family: var(--font-heading);
	font-size: 1.5rem;
	margin-bottom: 1rem;
}

.audience-card__text {
	color: #d1d5db;
	line-height: 1.6;
}

/* ... (всі стилі з попереднього кроку) ... */
/* Утилітарний клас для візуального приховування елементів */
.visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

/* ==========================================================================
   CONTACT SECTION (ETAP 4)
   ========================================================================== */
.contact {
	background-color: var(--color-surface);
}

.contact__container {
	display: grid;
	grid-template-columns: 1fr 1.2fr;
	gap: 4rem;
	align-items: center;
}

.contact__info .section-header__title,
.contact__info .section-header__subtitle {
	text-align: left;
	margin: 0 0 1rem 0;
}

.form-group {
	margin-bottom: 1.5rem;
}

.form-group input[type='text'],
.form-group input[type='email'],
.form-group input[type='tel'] {
	width: 100%;
	padding: 1rem;
	background-color: var(--color-background);
	border: 1px solid var(--color-secondary);
	border-radius: 8px;
	color: var(--color-text);
	font-size: 1rem;
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input[type='text']:focus,
.form-group input[type='email']:focus,
.form-group input[type='tel']:focus {
	outline: none;
	border-color: var(--color-primary);
	box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
}

.form-group--checkbox {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	font-size: 0.9rem;
	color: #d1d5db;
}

.form-group--checkbox input[type='checkbox'] {
	width: 1.2em;
	height: 1.2em;
	accent-color: var(--color-primary);
}

.contact-form__submit {
	width: 100%;
	font-size: 1.1rem;
	padding: 1rem;
}
.contact-form__submit:disabled {
	opacity: 0.7;
	cursor: not-allowed;
}

.form-success {
	display: none; /* Важливо: початково приховано */
	margin-top: 1.5rem;
	padding: 1rem;
	background-color: rgba(16, 185, 129, 0.1);
	border: 1px solid #10b981;
	border-radius: 8px;
	color: #a7f3d0;
	text-align: center;
	align-items: center;
	gap: 0.5rem;
}

.form-success--visible {
	display: flex; /* Показуємо при успішній відправці */
	justify-content: center;
}

@media (max-width: 992px) {
	.contact__container {
		grid-template-columns: 1fr;
		gap: 3rem;
	}
	.contact__info {
		text-align: center;
	}
	.contact__info .section-header__title,
	.contact__info .section-header__subtitle {
		text-align: center;
	}
}

/* ... (всі стилі з попереднього кроку) ... */

/* ==========================================================================
   COOKIE POP-UP (ETAP 5)
   ========================================================================== */
.cookie-popup {
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-secondary);
	padding: 1.5rem var(--container-padding);
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 2rem;
	z-index: 200;
	transform: translateY(100%);
	transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

.cookie-popup__text {
	color: #d1d5db;
	text-align: center;
}

.cookie-popup__button {
	padding: 0.6rem 1.5rem;
	flex-shrink: 0; /* Щоб кнопка не стискалася */
}

@media (max-width: 768px) {
	.cookie-popup {
		flex-direction: column;
		gap: 1rem;
		padding: 1.5rem;
	}
}

/* ==========================================================================
   POLICY PAGES STYLING (ETAP 5)
   ========================================================================== */
.pages {
	padding-top: calc(85px + 4rem); /* 85px - висота хедера */
	padding-bottom: 4rem;
}

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

.pages h1,
.pages h2 {
	font-family: var(--font-heading);
	color: var(--color-text);
	line-height: 1.3;
}

.pages h1 {
	font-size: 1.5rem;
	margin-bottom: 2rem;
}

.pages h2 {
	font-size: 1.5rem;
	margin-top: 3rem;
	margin-bottom: 1.5rem;
	border-bottom: 1px solid var(--color-secondary);
	padding-bottom: 0.5rem;
}

.pages p,
.pages li {
	font-size: 1.1rem;
	color: #d1d5db;
	line-height: 1.8;
	margin-bottom: 1.2rem;
}

.pages ul {
	list-style: disc;
	padding-left: 2rem;
}

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

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

.pages strong {
	color: var(--color-text);
	font-weight: 600;
}