/* ======== GLOBAL STYLES & SETUP ======== */

/* 1. FONT IMPORT */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Poppins:wght@600&display=swap');

/* 2. CSS VARIABLES */
:root {
	--font-primary: 'Inter', sans-serif;
	--font-headings: 'Poppins', sans-serif;

	--color-bg: #ffffff;
	--color-bg-alt: #f3f4f6;
	--color-text: #111827;
	--color-text-secondary: #6b7280;
	--color-accent: #4f46e5;
	--color-border: #e5e7eb;

	--header-height: 70px;
}

/* 3. RESET */
*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
}

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

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

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

a:hover {
	color: #3730a3;
}

ul {
	list-style: none;
}

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

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

/* 4. UTILITY CLASSES */
.container {
	max-width: 1140px;
	margin-left: auto;
	margin-right: auto;
	padding-left: 1rem;
	padding-right: 1rem;
}

/* ======== HEADER ======== */
.header {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: var(--header-height);
	background-color: rgba(255, 255, 255, 0.9);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--color-border);
	z-index: 100;
}

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

.logo {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	font-family: var(--font-headings);
	font-weight: 600;
	font-size: 1.5rem;
	color: var(--color-text);
}
.logo:hover {
	color: var(--color-text);
}

.logo__img {
	width: 32px;
	height: 32px;
}

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

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

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

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

.nav__link:hover::after {
	width: 100%;
}

.header__burger {
	display: none;
	color: var(--color-text);
}

/* ======== FOOTER ======== */
.footer {
	background-color: var(--color-bg-alt);
	padding-top: 4rem;
	border-top: 1px solid var(--color-border);
}

.footer__container {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: 2rem;
	padding-bottom: 4rem;
}

.footer__column--about .logo {
	margin-bottom: 1rem;
}

.footer__description {
	color: var(--color-text-secondary);
	font-size: 0.9rem;
}

.footer__title {
	font-size: 1.1rem;
	margin-bottom: 1rem;
	font-weight: 600;
}

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

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

.footer__contact-icon {
	width: 18px;
	height: 18px;
	margin-top: 3px;
	color: var(--color-text-secondary);
}

.footer__link {
	color: var(--color-text-secondary);
	font-size: 0.9rem;
}

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

.footer__bottom {
	border-top: 1px solid var(--color-border);
	padding: 1.5rem 0;
}

.footer__bottom-container {
	text-align: center;
	color: var(--color-text-secondary);
	font-size: 0.85rem;
}

/* ======== BUTTON ======== */
.button {
	display: inline-block;
	padding: 0.8rem 2rem;
	background-color: var(--color-accent);
	color: var(--color-bg);
	font-weight: 500;
	border-radius: 6px;
	transition: background-color 0.3s ease, transform 0.3s ease;
}

.button:hover {
	background-color: #3730a3;
	color: var(--color-bg);
	transform: translateY(-2px);
}

/* ======== HERO SECTION ======== */
.hero {
	position: relative; /* Для позиционирования canvas */
	overflow: hidden; /* Чтобы canvas не выходил за пределы */
	padding-top: calc(var(--header-height) + 4rem);
	padding-bottom: 4rem;
	background-color: var(--color-bg-alt);
}

.hero__canvas {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 0;
}

.hero__container {
	position: relative; /* Чтобы контент был поверх canvas */
	z-index: 1;
	display: grid;
	align-items: center;
	gap: 3rem;
}

.hero__title {
	font-size: 2.5rem;
	margin-bottom: 1rem;
}

.hero__description {
	font-size: 1.1rem;
	color: var(--color-text-secondary);
	margin-bottom: 2rem;
	max-width: 500px;
}

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

.hero__image {
	border-radius: 12px;
	box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ======== REUSABLE SECTION HEADER ======== */
.section-header {
	text-align: center;
	max-width: 650px;
	margin: 0 auto 4rem auto;
}

.section-header__title {
	font-size: 2.2rem;
	margin-bottom: 1rem;
}

.section-header__subtitle {
	font-size: 1.1rem;
	color: var(--color-text-secondary);
}

/* ======== FEATURES SECTION ======== */
.features {
	padding: 5rem 0;
	background-color: var(--color-bg);
}

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

.features__card {
	background-color: #ffffff;
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 2.5rem 2rem;
	text-align: center;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.features__card:hover {
	transform: translateY(-8px);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.07);
}

.features__card-icon {
	display: inline-flex;
	justify-content: center;
	align-items: center;
	width: 60px;
	height: 60px;
	border-radius: 50%;
	background-color: #eef2ff;
	color: var(--color-accent);
	margin-bottom: 1.5rem;
}

.features__card-icon i svg {
	width: 32px;
	height: 32px;
}

.features__card-title {
	font-size: 1.25rem;
	margin-bottom: 0.5rem;
}

.features__card-description {
	color: var(--color-text-secondary);
	font-size: 0.95rem;
}

/* ======== SHOWCASE SECTION ======== */
.showcase {
	padding: 5rem 0;
	background-color: var(--color-bg-alt); /* Чередуем фон */
}

.showcase__item {
	display: grid;
	grid-template-columns: 1fr;
	gap: 2rem;
	align-items: center;
}

.showcase__item:not(:last-child) {
	margin-bottom: 5rem;
}

.showcase__title {
	font-size: 1.8rem;
	margin-bottom: 1rem;
}

.showcase__description {
	color: var(--color-text-secondary);
	font-size: 1rem;
	line-height: 1.7;
}

.showcase__image {
	border-radius: 12px;
	box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ======== RESPONSIVE ======== */

/* TABLET & UP */
@media (min-width: 768px) {
	/* HERO */
	.hero__container {
		grid-template-columns: 1fr 1fr;
		gap: 4rem;
	}
	.hero {
		padding-top: calc(var(--header-height) + 6rem);
		padding-bottom: 6rem;
	}
	.hero__title {
		font-size: 3.2rem;
	}

	/* SECTION HEADER */
	.section-header__title {
		font-size: 2.5rem;
	}

	/* FEATURES */
	.features {
		padding: 6rem 0;
	}

	/* SHOWCASE */
	.showcase {
		padding: 6rem 0;
	}
	.showcase__item {
		grid-template-columns: 1fr 1fr;
		gap: 4rem;
	}
	.showcase__item.showcase__item--reverse .showcase__image-wrapper {
		order: 2;
	}
}

/* MOBILE-ONLY (UP TO 768px) */
@media (max-width: 768px) {
	/* HEADER */
	.nav {
		position: fixed;
		top: var(--header-height);
		left: -100%;
		width: 100%;
		height: calc(100vh - var(--header-height));
		background-color: var(--color-bg);
		flex-direction: column;
		justify-content: center;
		align-items: center;
		transition: left 0.4s ease-in-out;
	}
	.nav.nav--active {
		left: 0;
	}
	.nav__list {
		flex-direction: column;
		gap: 2.5rem;
	}
	.nav__link {
		font-size: 1.5rem;
	}
	.header__burger {
		display: block;
		z-index: 101; /* Поверх навигации */
	}
}

/* ======== LEARNING ACCORDION SECTION ======== */
.learning {
	padding: 5rem 0;
	background-color: var(--color-bg); /* Чередуем фон */
}

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

.learning__image {
	border-radius: 12px;
	box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.accordion__item {
	border-bottom: 1px solid var(--color-border);
}
.accordion__item:first-child {
	border-top: 1px solid var(--color-border);
}

.accordion__header {
	width: 100%;
	padding: 1.5rem 0;
	display: flex;
	justify-content: space-between;
	align-items: center;
	text-align: left;
	font-family: var(--font-headings);
	font-size: 1.1rem;
	font-weight: 600;
	color: var(--color-text);
}

.accordion__icon {
	transition: transform 0.3s ease;
	flex-shrink: 0; /* Предотвращает сжатие иконки */
	margin-left: 1rem;
}

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

.accordion__description {
	padding-bottom: 1.5rem;
	color: var(--color-text-secondary);
	line-height: 1.7;
}

/* Стили для активного состояния аккордеона */
.accordion__item.accordion__item--active .accordion__icon {
	transform: rotate(180deg);
}

@media (min-width: 768px) {
	.learning {
		padding: 6rem 0;
	}
	.learning__container {
		grid-template-columns: 1fr 1fr;
		gap: 4rem;
	}
}

/* ======== TOOLS SECTION ======== */
.tools {
	padding: 5rem 0;
	background-color: var(--color-bg-alt); /* Чередуем фон */
}

.tools__grid {
	display: grid;
	gap: 1.5rem;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.tools__card {
	background-color: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 2rem;
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tools__card:hover {
	transform: translateY(-8px);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.07);
}

.tools__card-icon {
	color: var(--color-accent);
}

.tools__card-icon svg {
	width: 40px;
	height: 40px;
	margin-bottom: 1rem;
}

.tools__card-title {
	font-size: 1.1rem;
	margin-bottom: 0.5rem;
}

.tools__card-examples {
	font-size: 0.9rem;
	color: var(--color-text-secondary);
}

@media (min-width: 768px) {
	.tools {
		padding: 6rem 0;
	}
}

/* ======== CONTACT SECTION ======== */
.contact {
	padding: 5rem 0;
	background-color: var(--color-bg);
}

.contact__wrapper {
	max-width: 600px;
	margin: 0 auto;
	background-color: #ffffff;
	border: 1px solid var(--color-border);
	border-radius: 16px;
	padding: 2rem;
}

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

.contact__form-label {
	display: block;
	font-weight: 500;
	margin-bottom: 0.5rem;
	font-size: 0.9rem;
}

.contact__form-input {
	width: 100%;
	padding: 0.8rem 1rem;
	border: 1px solid var(--color-border);
	border-radius: 6px;
	font-size: 1rem;
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact__form-input:focus {
	outline: none;
	border-color: var(--color-accent);
	box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.contact__form-group--consent {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
	margin-bottom: 2rem;
}

.contact__form-checkbox {
	margin-top: 4px;
	flex-shrink: 0;
	width: 16px;
	height: 16px;
}

.contact__form-consent-label {
	font-size: 0.9rem;
	color: var(--color-text-secondary);
	line-height: 1.5;
}

.contact__form-consent-label a {
	text-decoration: underline;
}

.contact__form-button {
	width: 100%;
	padding: 1rem;
	font-size: 1.1rem;
}

/* Success Message */
.contact__success-message {
	text-align: center;
	padding: 2rem;
}

.contact__success-icon {
	color: #10b981; /* Зеленый цвет успеха */
}

.contact__success-icon svg {
	width: 60px;
	height: 60px;
	margin-bottom: 1rem;
}

.contact__success-title {
	font-size: 1.5rem;
	margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
	.contact {
		padding: 6rem 0;
	}
	.contact__wrapper {
		padding: 3rem;
	}
}

/* ======== COOKIE POP-UP ======== */
.cookie-popup {
	position: fixed;
	bottom: 1.5rem;
	left: 1.5rem;
	right: 1.5rem;
	max-width: 500px;
	background-color: var(--color-text);
	color: var(--color-bg);
	padding: 1rem 1.5rem;
	border-radius: 12px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 1rem;
	z-index: 200;
	transform: translateY(200%);
	transition: transform 0.5s ease-in-out;
}

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

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

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

.cookie-popup__button {
	background-color: var(--color-bg);
	color: var(--color-text);
	padding: 0.5rem 1rem;
	flex-shrink: 0; /* Не сжимать кнопку */
}

.cookie-popup__button:hover {
	background-color: #e5e7eb;
	color: var(--color-text);
}

/* ======== STYLES FOR POLICY PAGES (privacy.html, etc.) ======== */
.pages {
	padding: 7rem 0;
}

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

.pages h1,
.pages h2,
.pages p,
.pages ul {
	margin-bottom: 1.5rem;
}

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

.pages h2 {
	font-size: 1.5rem;
	margin-top: 2.5rem;
}

.pages p {
	line-height: 1.8;
	color: var(--color-text-secondary);
}

.pages ul {
	list-style: disc;
	padding-left: 1.5rem;
}

.pages li {
	margin-bottom: 0.75rem;
	line-height: 1.8;
	color: var(--color-text-secondary);
}

.pages a {
	text-decoration: underline;
}

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

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

/* Адаптация cookie pop-up для мобильных */
@media (max-width: 480px) {
	.cookie-popup {
		flex-direction: column;
		text-align: center;
		bottom: 1rem;
		left: 1rem;
		right: 1rem;
	}
}