/* ====================
   GLOBAL STYLES (ETAP 0)
   ==================== */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;700&family=Space+Grotesk:wght@500;700&display=swap');

:root {
	--color-background: #0d1117;
	--color-background-secondary: #161b22;
	--color-text-primary: #c9d1d9;
	--color-text-headings: #ffffff;
	--color-accent: #58a6ff;
	--color-border: #30363d;

	--font-primary: 'Manrope', sans-serif;
	--font-headings: 'Space Grotesk', sans-serif;

	--header-height: 80px;
}

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

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font-primary);
	background-color: var(--color-background);
	color: var(--color-text-primary);
	font-size: 16px;
	line-height: 1.6;
}

.container {
	max-width: 1200px;
	margin-left: auto;
	margin-right: auto;
	padding-left: 1rem;
	padding-right: 1rem;
}

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

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

ul {
	list-style: none;
}

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

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

/* ====================
   HEADER (ETAP 1)
   ==================== */

.header {
	background-color: rgba(13, 17, 23, 0.8);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--color-border);
	position: fixed;
	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%;
}

.logo {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	font-family: var(--font-headings);
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--color-text-headings);
}

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

.nav__list {
	display: flex;
	gap: 2rem;
}

.nav__link {
	color: var(--color-text-primary);
	font-weight: 500;
	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::after {
	width: 100%;
}

.header__burger {
	display: none;
	background: none;
	border: none;
	color: var(--color-text-headings);
	cursor: pointer;
}

.mobile-menu {
	display: none;
	position: fixed;
	top: 0;
	right: -100%;
	width: 80%;
	max-width: 320px;
	height: 100vh;
	background-color: var(--color-background-secondary);
	box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
	transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1);
	padding: 3rem 2rem;
	z-index: 110;
}

.mobile-menu.is-open {
	right: 0;
}

.mobile-menu__close {
	position: absolute;
	top: 2rem;
	right: 2rem;
	background: none;
	border: none;
	color: var(--color-text-headings);
	cursor: pointer;
}

.mobile-menu__list {
	display: flex;
	flex-direction: column;
	gap: 2rem;
	text-align: center;
}

.mobile-menu__link {
	font-size: 1.5rem;
	font-family: var(--font-headings);
	color: var(--color-text-headings);
}

/* Mobile styles */
@media (max-width: 768px) {
	.header__nav {
		display: none;
	}
	.header__burger {
		display: block;
	}
	.mobile-menu {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
	}
}

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

.footer__container {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: 2.5rem;
}

.footer__column:first-child {
	grid-column: span 1;
}

.footer__logo {
	margin-bottom: 1rem;
}

.footer__copyright {
	font-size: 0.9rem;
	color: var(--color-text-primary);
	opacity: 0.7;
}

.footer__title {
	font-size: 1.1rem;
	margin-bottom: 1.5rem;
	font-weight: 500;
}

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

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

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

.footer__list--contacts .footer__link {
	word-break: break-all;
}

.footer__address {
	color: var(--color-text-primary);
	font-style: normal;
}

/* ====================
   MAIN CONTENT (Placeholder)
   ==================== */
.main {
	padding-top: var(--header-height);
	/* Далі тут буде контент */
	min-height: 100vh; /* Тимчасово для візуалізації */
}

/* ====================
   BUTTON (Reusable)
   ==================== */
.button {
	display: inline-block;
	padding: 0.8rem 2rem;
	background-color: var(--color-accent);
	color: var(--color-background);
	font-family: var(--font-headings);
	font-weight: 700;
	border-radius: 6px;
	border: 2px solid var(--color-accent);
	transition: background-color 0.3s ease, color 0.3s ease;
	cursor: pointer;
}

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

/* ====================
   HERO SECTION
   ==================== */
.hero {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 100vh;
	padding-top: var(--header-height);
	text-align: center;
	overflow: hidden; /* Hide particles overflow */
}

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

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

.hero__title {
	font-size: clamp(2.5rem, 6vw, 4.5rem); /* Responsive font size */
	line-height: 1.1;
	margin-bottom: 1.5rem;
	font-weight: 700;
}

/* For animation */
.hero__title span {
	display: inline-block;
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.5s ease, transform 0.5s ease;
}

.hero__subtitle {
	font-size: 1.25rem;
	line-height: 1.6;
	max-width: 650px;
	margin: 0 auto 2.5rem;
	color: var(--color-text-primary);
	opacity: 0.9;
}

/* Particle Animation */
.hero__particles {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
}

/* Will be populated by JS */
.hero__particles .particle {
	position: absolute;
	background-color: var(--color-accent);
	border-radius: 50%;
	opacity: 0;
	animation: rise 15s infinite linear;
}

@keyframes rise {
	0% {
		transform: translateY(0);
		opacity: 0;
	}
	10%,
	90% {
		opacity: 0.2;
	}
	100% {
		transform: translateY(-100vh);
		opacity: 0;
	}
}

/* ====================
   SECTION (Reusable)
   ==================== */
.section {
	padding: 6rem 0;
}

.section-header {
	text-align: center;
	max-width: 750px;
	margin: 0 auto 4rem;
}

.section-header__title {
	font-size: clamp(2rem, 5vw, 2.75rem);
	margin-bottom: 1rem;
}

.section-header__subtitle {
	font-size: 1.125rem;
	color: var(--color-text-primary);
	opacity: 0.8;
}

/* ====================
   HOW IT WORKS SECTION
   ==================== */
.how-it-works {
	background-color: var(--color-background-secondary);
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
}

.how-it-works__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem;
}

.how-it-works__card {
	background-color: var(--color-background);
	padding: 2.5rem 2rem;
	border: 1px solid var(--color-border);
	border-radius: 12px;
	text-align: center;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.how-it-works__card-icon {
	display: inline-flex;
	justify-content: center;
	align-items: center;
	width: 64px;
	height: 64px;
	background-color: rgba(88, 166, 255, 0.1);
	color: var(--color-accent);
	border-radius: 50%;
	margin-bottom: 1.5rem;
}

.how-it-works__card-icon i {
	width: 32px;
	height: 32px;
}

.how-it-works__card-title {
	font-size: 1.5rem;
	margin-bottom: 0.75rem;
}

.how-it-works__card-text {
	font-size: 1rem;
	line-height: 1.6;
}

/* ====================
   KEY TOPICS SECTION
   ==================== */
.topics__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 1.5rem;
}

.topics__card {
	position: relative;
	display: block;
	overflow: hidden;
	border-radius: 12px;
	aspect-ratio: 4 / 3; /* Maintain a consistent shape */
	border: 1px solid var(--color-border);
}

.topics__card-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.topics__card-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: flex;
	flex-direction: column;
	justify-content: flex-end; /* Align content to the bottom */
	align-items: flex-start; /* Align content to the left */
	padding: 2rem;
	text-align: left;
	background: linear-gradient(
		to top,
		rgba(13, 17, 23, 0.9) 20%,
		rgba(13, 17, 23, 0)
	);
	opacity: 0;
	transition: opacity 0.4s ease;
}

.topics__card-title {
	font-size: 1.5rem;
	transform: translateY(10px);
	transition: transform 0.4s ease;
}

.topics__card-description {
	font-size: 1rem;
	opacity: 0;
	transform: translateY(10px);
	transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s;
}

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

.topics__card:hover .topics__card-overlay {
	opacity: 1;
}

.topics__card:hover .topics__card-title,
.topics__card:hover .topics__card-description {
	transform: translateY(0);
}

.topics__card:hover .topics__card-description {
	opacity: 0.8;
}

@media (max-width: 480px) {
	.topics__grid {
		grid-template-columns: 1fr; /* Single column on very small screens */
	}
	.topics__card-overlay {
		padding: 1.5rem;
	}
	.topics__card-title {
		font-size: 1.25rem;
	}

	.topics__card-overlay {
		opacity: 1;
	}

	.topics__card-description {
		opacity: 0.8;
	}
}

/* ====================
   FORMATS SECTION
   ==================== */
.formats {
	background-color: var(--color-background-secondary);
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
}

.formats__container {
	display: grid;
	grid-template-columns: 1fr 2.5fr; /* 1 part for nav, 2.5 for content */
	gap: 3rem;
	align-items: flex-start;
}

.formats__nav {
	display: flex;
	flex-direction: column;
	gap: 1rem;
	position: sticky;
	top: calc(var(--header-height) + 2rem); /* Stick below header */
}

.formats__nav-button {
	display: flex;
	align-items: center;
	gap: 1rem;
	width: 100%;
	padding: 1rem 1.5rem;
	font-family: var(--font-headings);
	font-size: 1.1rem;
	font-weight: 500;
	color: var(--color-text-primary);
	background-color: transparent;
	border: 1px solid var(--color-border);
	border-radius: 8px;
	cursor: pointer;
	text-align: left;
	transition: background-color 0.3s ease, color 0.3s ease;
}

.formats__nav-button:hover {
	background-color: var(--color-background);
	color: var(--color-text-headings);
}

.formats__nav-button--active {
	background-color: var(--color-background);
	color: var(--color-accent);
	border-color: var(--color-accent);
}

.formats__nav-button i {
	width: 24px;
	height: 24px;
	flex-shrink: 0;
}

.formats__content-panel {
	display: none; /* Hidden by default */
	grid-template-columns: 1fr;
	gap: 2rem;
	animation: fadeIn 0.5s ease;
}

.formats__content-panel--active {
	display: grid; /* Becomes a grid when active */
}

.formats__content-img {
	border-radius: 12px;
	border: 1px solid var(--color-border);
	width: 100%;
	aspect-ratio: 16 / 9;
	object-fit: cover;
}

.formats__content-text h3 {
	font-size: 1.75rem;
	margin-bottom: 1rem;
}

.formats__content-text p {
	font-size: 1.1rem;
	line-height: 1.7;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(10px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Responsive styles */
@media (max-width: 992px) {
	.formats__container {
		grid-template-columns: 1fr 2fr;
		gap: 2rem;
	}
}

@media (max-width: 768px) {
	.formats__container {
		grid-template-columns: 1fr; /* Stack columns */
	}
	.formats__nav {
		position: static;
		flex-direction: row;
		justify-content: center;
		flex-wrap: wrap; /* Allow buttons to wrap */
	}
	.formats__nav-button {
		flex-grow: 1;
	}
}

/* ====================
   REVIEWS SECTION
   ==================== */
.reviews {
	position: relative;
}

.reviews__slider {
	padding: 2rem 0;
	max-width: 100%;
}

.swiper-slide {
	height: auto; /* Make slides flexible */
	display: flex;
	justify-content: center;
}

.reviews__card {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	width: 100%;
	height: 100%; /* Fill the slide height */
	background-color: var(--color-background-secondary);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 2rem;
	position: relative;
}

.reviews__card-text {
	font-size: 1.1rem;
	font-style: italic;
	line-height: 1.7;
	padding-left: 2.5rem; /* Space for quote icon */
	margin-bottom: 2rem;
}

.reviews__card-text::before {
	content: '“';
	font-family: 'Times New Roman', serif;
	font-size: 5rem;
	color: var(--color-accent);
	position: absolute;
	top: 0.5rem;
	left: 1rem;
	line-height: 1;
	opacity: 0.3;
}

.reviews__card-author {
	border-top: 1px solid var(--color-border);
	padding-top: 1rem;
}

.reviews__card-name {
	display: block;
	color: var(--color-text-headings);
	font-family: var(--font-headings);
	font-size: 1.1rem;
}

.reviews__card-role {
	font-size: 0.9rem;
	opacity: 0.7;
}

/* Swiper Customization */
.swiper-pagination-bullet {
	background-color: var(--color-border);
	opacity: 1;
}

.swiper-pagination-bullet-active {
	background-color: var(--color-accent);
}

.swiper-button-prev,
.swiper-button-next {
	color: var(--color-accent);
	width: 50px !important;
	height: 50px !important;
	background-color: var(--color-background-secondary);
	border: 1px solid var(--color-border);
	border-radius: 50%;
	transition: background-color 0.3s ease;
}

.swiper-button-prev:hover,
.swiper-button-next:hover {
	background-color: var(--color-background);
}

.swiper-button-prev::after,
.swiper-button-next::after {
	font-size: 1.2rem !important;
	font-weight: bold;
}

@media (max-width: 768px) {
	.swiper-button-prev,
	.swiper-button-next {
		display: none; /* Hide arrows on mobile for a cleaner look */
	}
}

/* ====================
   CONTACT SECTION
   ==================== */
.contact__container {
	display: grid;
	grid-template-columns: 1fr 1.5fr;
	gap: 4rem;
	align-items: flex-start;
}

.contact__info-title {
	font-size: 2rem;
	margin-bottom: 1.5rem;
}

.contact__info-text {
	margin-bottom: 2rem;
	opacity: 0.8;
}

.contact__info-list {
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
}

.contact__info-list li {
	display: flex;
	align-items: center;
	gap: 1rem;
	font-size: 1.1rem;
}

.contact__info-list li a {
	color: var(--color-text-primary);
}
.contact__info-list li a:hover {
	color: var(--color-accent);
}

.contact__form {
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
}

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

.contact__form-label {
	margin-bottom: 0.5rem;
	font-weight: 500;
	font-size: 0.9rem;
	opacity: 0.8;
}

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

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

.contact__form-group--checkbox {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	margin-top: 0.5rem;
}
.contact__form-group--checkbox label {
	font-size: 0.9rem;
	opacity: 0.8;
}
.contact__form-group--checkbox a {
	text-decoration: underline;
}

.contact__form-button {
	align-self: flex-start;
}

.contact__form-message {
	padding: 1rem;
	border-radius: 6px;
	display: none; /* Hidden by default */
	margin-top: 1rem;
	font-weight: 500;
}

.contact__form-message--success {
	display: block;
	background-color: rgba(46, 160, 67, 0.2);
	color: #57ab5a;
	border: 1px solid #36733f;
}

@media (max-width: 992px) {
	.contact__container {
		grid-template-columns: 1fr;
	}
}

/* ====================
   COOKIE POP-UP
   ==================== */
.cookie-popup {
	position: fixed;
	bottom: 1.5rem;
	left: 1.5rem;
	right: 1.5rem;
	max-width: 500px;
	background-color: var(--color-background-secondary);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 1.5rem;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
	z-index: 200;
	transform: translateY(200%);
	transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.cookie-popup__text {
	font-size: 0.9rem;
	line-height: 1.5;
}

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

.cookie-popup__button {
	padding: 0.6rem 1.2rem;
	flex-shrink: 0;
}

@media (max-width: 500px) {
	.cookie-popup {
		flex-direction: column;
		text-align: center;
	}
}

/* ====================
   POLICY PAGES
   ==================== */
.pages {
	padding: 6rem 0;
}

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

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

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

.pages h2 {
	font-size: 1.5rem;
	margin-top: 3rem;
}

.pages p {
	font-size: 1.1rem;
	line-height: 1.8;
	margin-bottom: 1.5rem;
	color: var(--color-text-primary);
}

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

.pages li {
	font-size: 1.1rem;
	line-height: 1.8;
	margin-bottom: 0.75rem;
}

.pages a {
	text-decoration: underline;
}

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

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