/*=============== GOOGLE FONTS ===============*/
/*
font-family: 'Montserrat', sans-serif; (Headings)
font-family: 'Open Sans', sans-serif; (Body)
*/

/*=============== VARIABLES ===============*/
:root {
	/* Colors */
	--color-primary: #3a8dff;
	--color-primary-dark: #6424ff;
	--color-dark: #0a192f;
	--color-light: #f8f9fa;
	--color-text: #ced4da;
	--color-text-dark: #adb5bd;
	--color-white: #ffffff;

	/* Fonts */
	--font-body: 'Open Sans', sans-serif;
	--font-heading: 'Montserrat', sans-serif;

	/* Font sizes */
	--fs-base: 16px;
	--fs-h1: 2.5rem;
	--fs-h2: 2rem;
	--fs-h3: 1.5rem;

	/* Other */
	--container-width: 1200px;
	--radius: 8px;
	--transition: 0.3s ease;
}

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

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font-body);
	font-size: var(--fs-base);
	background-color: var(--color-dark);
	color: var(--color-text);
	line-height: 1.7;
}

h1,
h2,
h3 {
	font-family: var(--font-heading);
	color: var(--color-light);
	line-height: 1.3;
}

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

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

ul {
	list-style: none;
}

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

.container {
	max-width: var(--container-width);
	margin: 0 auto;
	padding: 0 1rem;
}

/*=============== HEADER & NAV ===============*/
.header {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 100;
	background-color: rgba(10, 25, 47, 0.85);
	backdrop-filter: blur(10px);
	transition: var(--transition);
}

.header.scrolled {
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header__container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 6rem;
}

.logo {
	display: inline-flex;
	align-items: center;
	gap: 0.75rem;
	font-weight: 700;
	font-family: var(--font-heading);
	color: var(--color-light);
}

.logo:hover {
	color: var(--color-light);
}

.logo__text {
	font-size: 1.5rem;
}

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

.nav__link {
	color: var(--color-text);
	font-weight: 600;
	padding: 0.5rem 0;
	position: relative;
}

.nav__link::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background: linear-gradient(
		90deg,
		var(--color-primary),
		var(--color-primary-dark)
	);
	transition: var(--transition);
}

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

.nav__link--button {
	background: linear-gradient(
		90deg,
		var(--color-primary),
		var(--color-primary-dark)
	);
	color: var(--color-white);
	padding: 0.75rem 1.5rem;
	border-radius: var(--radius);
}

.nav__link--button:hover {
	color: var(--color-white);
	transform: translateY(-2px);
	box-shadow: 0 4px 15px rgba(58, 141, 255, 0.4);
}

.nav__link--button::after {
	display: none;
}

/* Burger Menu */
.burger {
	display: none;
	flex-direction: column;
	gap: 5px;
	cursor: pointer;
	background: none;
	border: none;
}

.burger__line {
	width: 25px;
	height: 3px;
	background-color: var(--color-light);
	border-radius: 3px;
	transition: var(--transition);
}

/*=============== FOOTER ===============*/
.footer {
	padding-top: 5rem;
	padding-bottom: 2rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.footer__text {
	max-width: 300px;
	color: var(--color-text-dark);
}

.footer__title {
	font-size: 1.2rem;
	margin-bottom: 1.5rem;
}

.footer__list {
	display: flex;
	flex-direction: column;
	gap: 0.8rem;
}

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

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

.footer__list--contacts {
	gap: 1rem;
}

.footer__item--contact {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.footer__icon {
	width: 20px;
	height: 20px;
	color: var(--color-primary);
}

.footer__bottom {
	text-align: center;
	margin-top: 4rem;
	padding-top: 2rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
	color: var(--color-text-dark);
	font-size: 0.9rem;
}

/*=============== RESPONSIVE (mobile-first) ===============*/
@media (max-width: 992px) {
	.nav {
		position: fixed;
		top: 6rem;
		right: -100%;
		width: 60%;
		height: calc(100vh - 6rem);
		background-color: var(--color-dark);
		transition: var(--transition);
		padding: 2rem;
		box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
	}

	.nav.is-active {
		right: 0;
	}

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

	.nav__link {
		font-size: 1.2rem;
	}

	.burger {
		display: flex;
		z-index: 101;
	}

	/* Burger animation */
	.burger.is-active .burger__line:nth-child(1) {
		transform: rotate(45deg) translate(5px, 5px);
	}
	.burger.is-active .burger__line:nth-child(2) {
		opacity: 0;
	}
	.burger.is-active .burger__line:nth-child(3) {
		transform: rotate(-45deg) translate(7px, -6px);
	}
}

/*=============== BUTTONS ===============*/
.button {
	display: inline-block;
	background: linear-gradient(
		90deg,
		var(--color-primary),
		var(--color-primary-dark)
	);
	color: var(--color-white);
	padding: 1rem 2.5rem;
	border-radius: var(--radius);
	font-weight: 700;
	font-family: var(--font-heading);
	transition: var(--transition);
	border: none;
	cursor: pointer;
}

.button:hover {
	color: var(--color-white);
	transform: translateY(-3px);
	box-shadow: 0 5px 20px rgba(58, 141, 255, 0.5);
}

/*=============== HERO SECTION ===============*/
.hero {
	padding-top: 10rem;
	padding-bottom: 6rem;
	min-height: 100vh;
	display: flex;
	align-items: center;
	overflow: hidden; /* Для корректной работы анимации */
}

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

.hero__title {
	font-size: clamp(1.5rem, 5vw, 2.5rem); /* Адаптивный размер шрифта */
	margin-bottom: 1.5rem;
}

.hero__text {
	font-size: 1.2rem;
	color: var(--color-text-dark);
	margin-bottom: 2.5rem;
	max-width: 600px;
}

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

.hero__image {
	width: 100%;
	border-radius: var(--radius);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/*=============== RESPONSIVE (Hero) ===============*/
@media (min-width: 992px) {
	.hero__container {
		grid-template-columns: 1fr 1fr;
	}
}

/*=============== REUSABLE SECTION HEADER ===============*/
.section-header {
	text-align: center;
	margin-bottom: 4rem;
}

.section-header__title {
	font-size: var(--fs-h2);
	margin-bottom: 1rem;
}

.section-header__subtitle {
	font-size: 1.1rem;
	color: var(--color-text-dark);
	max-width: 700px;
	margin: 0 auto;
}

/*=============== COURSES SECTION ===============*/
.courses {
	padding-top: 6rem;
	padding-bottom: 6rem;
	background-color: #0d1e3a; /* Slightly lighter than main bg */
}

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

.course-card {
	background-color: var(--color-dark);
	border: 1px solid rgba(255, 255, 255, 0.1);
	padding: 2.5rem 2rem;
	border-radius: var(--radius);
	text-align: center;
	transition: var(--transition);
}

.course-card:hover {
	transform: translateY(-10px);
	border-color: var(--color-primary);
}

.course-card__icon-wrapper {
	width: 80px;
	height: 80px;
	margin: 0 auto 1.5rem auto;
	border-radius: 50%;
	display: flex;
	justify-content: center;
	align-items: center;
	background: linear-gradient(
		135deg,
		var(--color-primary),
		var(--color-primary-dark)
	);
}

.course-card__icon {
	width: 40px;
	height: 40px;
	color: var(--color-white);
}

.course-card__title {
	font-size: var(--fs-h3);
	margin-bottom: 1rem;
	color: var(--color-light);
}

.course-card__description {
	color: var(--color-text-dark);
}

/*=============== RESPONSIVE (Courses) ===============*/
@media (min-width: 768px) {
	.courses__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/*=============== MENTORS SECTION ===============*/
.mentors {
	padding-top: 6rem;
	padding-bottom: 6rem;
}

.mentors__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 2rem;
}

.mentor-card {
	text-align: center;
	transition: var(--transition);
}

.mentor-card:hover {
	transform: translateY(-5px);
}

.mentor-card__image-wrapper {
	width: 180px;
	height: 180px;
	margin: 0 auto 1.5rem auto;
	border-radius: 50%;
	overflow: hidden;
	border: 4px solid transparent;
	background: linear-gradient(var(--color-dark), var(--color-dark)) padding-box,
		linear-gradient(135deg, var(--color-primary), var(--color-primary-dark))
			border-box;
	box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

.mentor-card__name {
	font-size: 1.3rem;
	color: var(--color-light);
	margin-bottom: 0.25rem;
}

.mentor-card__title {
	color: var(--color-primary);
	font-weight: 600;
}

/*=============== REVIEWS SECTION ===============*/
.reviews {
	padding-top: 6rem;
	padding-bottom: 8rem;
	background-color: #0d1e3a;
}

.swiper {
	width: 100%;
	padding-bottom: 4rem; /* Space for pagination */
}

.swiper-slide {
	display: flex;
	justify-content: center;
}

.review-card {
	background-color: var(--color-dark);
	padding: 2.5rem;
	border-radius: var(--radius);
	border: 1px solid rgba(255, 255, 255, 0.1);
	width: 100%;
}

.review-card__text {
	font-size: 1.1rem;
	font-style: italic;
	color: var(--color-text-dark);
	margin-bottom: 2rem;
	padding-bottom: 2rem;
	border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.review-card__author {
	display: flex;
	align-items: center;
	gap: 1rem;
}

.review-card__avatar {
	width: 60px;
	height: 60px;
	border-radius: 50%;
	object-fit: cover;
}

.review-card__name {
	color: var(--color-light);
	margin-bottom: 0.25rem;
}

.review-card__course {
	color: var(--color-primary);
	font-size: 0.9rem;
}

/* Swiper Pagination */
.swiper-pagination-bullet {
	background-color: var(--color-text-dark);
	width: 12px;
	height: 12px;
	opacity: 0.7;
}

.swiper-pagination-bullet-active {
	background-color: var(--color-primary);
	opacity: 1;
}
/*=============== FAQ SECTION ===============*/
.faq {
	padding-top: 6rem;
	padding-bottom: 6rem;
}

.faq__accordion {
	max-width: 800px;
	margin: 0 auto;
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.faq-item {
	background-color: #0d1e3a;
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: var(--radius);
	overflow: hidden;
}

.faq-item__header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	width: 100%;
	padding: 1.5rem;
	background-color: transparent;
	border: none;
	color: var(--color-light);
	font-family: var(--font-heading);
	font-size: 1.2rem;
	text-align: left;
	cursor: pointer;
	transition: var(--transition);
}

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

.faq-item__icon {
	width: 24px;
	height: 24px;
	transition: transform var(--transition);
	flex-shrink: 0; /* Prevents icon from shrinking */
}

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

.faq-item__text {
	padding: 0 1.5rem 1.5rem 1.5rem;
	color: var(--color-text-dark);
	line-height: 1.8;
}

/* Active state for accordion */
.faq-item.is-active .faq-item__header {
	color: var(--color-primary);
}

.faq-item.is-active .faq-item__icon {
	transform: rotate(180deg);
}

/*=============== CONTACT SECTION ===============*/
.contact {
	padding-top: 6rem;
	padding-bottom: 6rem;
	background-color: #0d1e3a;
}

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

.contact__title {
	font-size: var(--fs-h2);
	margin-bottom: 1.5rem;
}

.contact__text {
	color: var(--color-text-dark);
	font-size: 1.1rem;
	max-width: 500px;
}

/* Form Styles */
.form {
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
}

.form__group {
	position: relative;
}

.form__input {
	width: 100%;
	padding: 1rem;
	background-color: var(--color-dark);
	border: 1px solid rgba(255, 255, 255, 0.2);
	border-radius: var(--radius);
	color: var(--color-light);
	font-size: 1rem;
	transition: var(--transition);
}

.form__label {
	position: absolute;
	top: 1rem;
	left: 1rem;
	color: var(--color-text-dark);
	transition: var(--transition);
	pointer-events: none;
	background-color: var(--color-dark);
	padding: 0 0.25rem;
}

.form__input:focus,
.form__input:not(:placeholder-shown) {
	border-color: var(--color-primary);
	outline: none;
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
	top: -0.75rem;
	left: 0.75rem;
	font-size: 0.8rem;
	color: var(--color-primary);
}

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

.form__checkbox {
	margin-top: 0.25rem;
}

.form__checkbox-label {
	font-size: 0.9rem;
	color: var(--color-text-dark);
}

.form__checkbox-label a {
	color: var(--color-primary);
	text-decoration: underline;
}

.form__button {
	width: 100%;
	padding: 1.2rem;
	font-size: 1.1rem;
}

/* Success Message */
.success-message {
	display: none; /* Hidden by default */
	text-align: center;
	padding: 2rem;
	border: 1px solid var(--color-primary);
	border-radius: var(--radius);
}

.success-message__icon {
	width: 50px;
	height: 50px;
	color: var(--color-primary);
	margin-bottom: 1rem;
}

.success-message__title {
	font-size: 1.5rem;
	margin-bottom: 0.5rem;
}

/* Responsive */
@media (min-width: 992px) {
	.contact__container {
		grid-template-columns: 1fr 1fr;
	}
}

/*=============== COOKIE POPUP ===============*/
.cookie-popup {
	position: fixed;
	bottom: -100%; /* Initially hidden */
	left: 50%;
	transform: translateX(-50%);
	width: calc(100% - 2rem);
	max-width: 600px;
	background-color: #0d1e3a;
	padding: 1.5rem;
	border-radius: var(--radius);
	box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 1rem;
	z-index: 1000;
	transition: bottom 0.5s ease-in-out;
}

.cookie-popup.is-visible {
	bottom: 1rem; /* Visible state */
}

.cookie-popup__text {
	color: var(--color-text-dark);
}

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

.cookie-popup__button {
	padding: 0.75rem 1.5rem;
	flex-shrink: 0; /* Prevents button from shrinking */
}

@media (max-width: 576px) {
	.cookie-popup {
		flex-direction: column;
		text-align: center;
	}
}

/*=============== GENERIC PAGES (Privacy, Terms etc.) ===============*/
.pages {
	padding-top: 10rem;
	padding-bottom: 6rem;
}

.pages h1,
.pages h2 {
	font-family: var(--font-heading);
	color: var(--color-light);
	margin-bottom: 1.5rem;
	margin-top: 2.5rem;
}

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

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

.pages p {
	color: var(--color-text-dark);
	line-height: 1.8;
	margin-bottom: 1.5rem;
}

.pages a {
	color: var(--color-primary);
	font-weight: 600;
	text-decoration: underline;
}

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

.pages ul {
	list-style: disc;
	padding-left: 2rem;
	margin-bottom: 1.5rem;
}

.pages li {
	margin-bottom: 1rem;
	color: var(--color-text-dark);
}

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