/* ETAP 0: GLOBAL STYLES */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@600;700&family=Manrope:wght@400;500&display=swap');

:root {
	--bg-color: #111827;
	--surface-color: #1f2937;
	--primary-text-color: #f3f4f6;
	--secondary-text-color: #9ca3af;
	--accent-color: #2dd4bf;
	--accent-hover-color: #5eead4;

	--font-heading: 'Exo 2', sans-serif;
	--font-body: 'Manrope', sans-serif;

	--header-height: 80px;
}

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

html {
	scroll-behavior: smooth;
}

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

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

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

a:hover {
	color: var(--accent-color);
}

ul {
	list-style: none;
}

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

.container {
	max-width: 1200px;
	margin-left: auto;
	margin-right: auto;
	padding-left: 15px;
	padding-right: 15px;
}

/* ETAP 1: HEADER */
.header {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: var(--header-height);
	background-color: rgba(17, 24, 39, 0.8);
	backdrop-filter: blur(10px);
	z-index: 1000;
	display: flex;
	align-items: center;
}

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

.header__logo {
	display: flex;
	align-items: center;
	gap: 12px;
	font-family: var(--font-heading);
	font-weight: 700;
	font-size: 24px;
}

.header__logo svg path,
.header__logo svg circle {
	transition: all 0.3s ease;
}

.header__logo:hover svg path,
.header__logo:hover svg circle {
	stroke: var(--accent-hover-color);
	fill: var(--accent-hover-color);
}

.header__nav-list {
	display: flex;
	gap: 32px;
}

.header__nav-link {
	font-weight: 500;
	padding: 8px 0;
	position: relative;
}

.header__nav-link::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 100%;
	height: 2px;
	background-color: var(--accent-color);
	transform: scaleX(0);
	transform-origin: right;
	transition: transform 0.3s ease-in-out;
}

.header__nav-link:hover::after {
	transform: scaleX(1);
	transform-origin: left;
}

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

/* ETAP 2: FOOTER */
.footer {
	background-color: var(--surface-color);
	padding: 60px 0;
	margin-top: 80px; /* Placeholder margin */
}

.footer__container {
	display: grid;
	grid-template-columns: 2fr repeat(3, 1fr);
	gap: 40px;
}

.footer__column--about {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.footer__logo {
	display: flex;
	align-items: center;
	gap: 12px;
	font-family: var(--font-heading);
	font-weight: 700;
	font-size: 24px;
	color: var(--primary-text-color);
}

.footer__description {
	color: var(--secondary-text-color);
	font-size: 14px;
	max-width: 280px;
}

.footer__title {
	font-size: 18px;
	margin-bottom: 16px;
}

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

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

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

.footer__list--contacts li {
	display: flex;
	align-items: center;
}

/* ADAPTIVE STYLES */

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

@media (max-width: 768px) {
	.header__nav {
		position: fixed;
		top: 0;
		right: -100%;
		width: 80%;
		max-width: 320px;
		height: 100vh;
		background-color: var(--surface-color);
		box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
		transition: right 0.4s ease-in-out;
		padding: 100px 40px;
	}

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

	.header__nav-list {
		flex-direction: column;
		gap: 24px;
	}

	.header__nav-link {
		font-size: 20px;
	}

	.header__burger {
		display: block;
		z-index: 1001; /* Above mobile menu */
	}
}

@media (max-width: 576px) {
	.footer__container {
		grid-template-columns: 1fr;
		text-align: center;
	}
	.footer__column--about,
	.footer__logo {
		align-items: center;
	}
	.footer__description {
		max-width: none;
	}
}

/* ETAP 3: HERO SECTION */
.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	padding-top: var(--header-height);
	overflow: hidden;
}

.hero__canvas {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
}

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

.hero__content {
	max-width: 750px;
}

.hero__title {
	font-size: 52px;
	font-weight: 700;
	margin-bottom: 24px;
	line-height: 1.2;
}

.hero__subtitle {
	font-size: 18px;
	color: var(--secondary-text-color);
	margin-bottom: 40px;
	max-width: 600px;
}

.hero__cta {
	display: inline-block;
	padding: 16px 32px;
	background-color: var(--accent-color);
	color: var(--bg-color);
	font-family: var(--font-heading);
	font-weight: 600;
	border-radius: 8px;
	transition: background-color 0.3s ease, transform 0.3s ease;
}

.hero__cta:hover {
	background-color: var(--accent-hover-color);
	color: var(--bg-color);
	transform: translateY(-3px);
}

/* ADAPTIVE FOR HERO */
@media (max-width: 768px) {
	.hero {
		text-align: center;
	}
	.hero__title {
		font-size: 40px;
	}
	.hero__subtitle {
		margin-left: auto;
		margin-right: auto;
	}
}

@media (max-width: 576px) {
	.hero__title {
		font-size: 32px;
	}
	.hero__subtitle {
		font-size: 16px;
	}
}

/* ETAP 3.1: HOW-IT-WORKS SECTION */

.section-header {
	text-align: center;
	max-width: 650px;
	margin: 0 auto 60px;
}

.section-header__title {
	font-size: 42px;
	margin-bottom: 16px;
}

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

.how-it-works {
	padding: 100px 0;
	background-color: var(--bg-color); /* Can be changed later for contrast */
}

.how-it-works__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 30px;
}

.how-it-works__card {
	background-color: var(--surface-color);
	padding: 40px;
	border-radius: 12px;
	border: 1px solid transparent;
	transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.how-it-works__card-icon {
	width: 64px;
	height: 64px;
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: rgba(45, 212, 191, 0.1);
	border-radius: 50%;
	margin-bottom: 24px;
}

.how-it-works__card-icon i {
	width: 32px;
	height: 32px;
	color: var(--accent-color);
}

.how-it-works__card-title {
	font-size: 22px;
	margin-bottom: 12px;
}

.how-it-works__card-text {
	color: var(--secondary-text-color);
}

/* ADAPTIVE FOR HOW-IT-WORKS */
@media (max-width: 992px) {
	.how-it-works__grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 576px) {
	.how-it-works {
		padding: 60px 0;
	}
	.section-header__title {
		font-size: 32px;
	}
	.section-header__subtitle {
		font-size: 16px;
	}
	.how-it-works__card {
		padding: 30px;
	}
}

/* ETAP 3.2: TECHNOLOGIES SECTION */

.technologies {
	padding: 100px 0;
	background-color: var(--surface-color);
}

.technologies__tabs {
	max-width: 900px;
	margin: 0 auto;
}

.technologies__nav {
	display: flex;
	justify-content: center;
	gap: 10px;
	margin-bottom: 40px;
	background-color: var(--bg-color);
	padding: 8px;
	border-radius: 12px;
}

.technologies__nav-btn {
	flex: 1;
	padding: 12px 20px;
	border: none;
	background-color: transparent;
	color: var(--secondary-text-color);
	font-family: var(--font-heading);
	font-size: 16px;
	font-weight: 600;
	cursor: pointer;
	border-radius: 8px;
	transition: background-color 0.3s ease, color 0.3s ease;
}

.technologies__nav-btn:hover {
	background-color: #374151; /* A slightly lighter shade */
	color: var(--primary-text-color);
}

.technologies__nav-btn.is-active {
	background-color: var(--accent-color);
	color: var(--bg-color);
}

.technologies__content-pane {
	display: none;
	animation: fadeIn 0.6s ease;
}

.technologies__content-pane.is-active {
	display: block;
}

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

.technologies__content-grid {
	display: grid;
	grid-template-columns: 1fr 1.2fr;
	gap: 40px;
	align-items: center;
}

.technologies__image img {
	border-radius: 12px;
}

.technologies__title {
	font-size: 28px;
	margin-bottom: 16px;
}

.technologies__description {
	color: var(--secondary-text-color);
	margin-bottom: 24px;
}

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

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

.technologies__list i {
	color: var(--accent-color);
	width: 20px;
	height: 20px;
}

/* ADAPTIVE FOR TECHNOLOGIES */
@media (max-width: 768px) {
	.technologies__content-grid {
		grid-template-columns: 1fr;
		gap: 30px;
	}
	.technologies__image {
		order: -1; /* Image on top on mobile */
	}
	.technologies__nav {
		flex-direction: column;
	}
}

@media (max-width: 576px) {
	.technologies {
		padding: 60px 0;
	}
	.technologies__title {
		font-size: 24px;
	}
}

/* ETAP 3.3: BREAKDOWNS SECTION */

.breakdowns {
	padding: 100px 0;
	background-color: var(--bg-color);
}

.breakdowns__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 30px;
}

.breakdowns__card {
	background-color: var(--surface-color);
	border-radius: 12px;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	border: 1px solid transparent;
	transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.breakdowns__card:hover {
	transform: translateY(-8px);
	border-color: rgba(45, 212, 191, 0.5);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.breakdowns__card-image img {
	width: 100%;
	height: 200px;
	object-fit: cover;
}

.breakdowns__card-content {
	padding: 24px;
	flex-grow: 1;
	display: flex;
	flex-direction: column;
}

.breakdowns__card-tag {
	display: inline-block;
	padding: 4px 12px;
	background-color: rgba(45, 212, 191, 0.1);
	color: var(--accent-color);
	border-radius: 20px;
	font-size: 12px;
	font-weight: 600;
	margin-bottom: 16px;
	align-self: flex-start;
}

.breakdowns__card-title {
	font-size: 20px;
	margin-bottom: 12px;
}

.breakdowns__card-text {
	color: var(--secondary-text-color);
	margin-bottom: 24px;
	flex-grow: 1;
}

.breakdowns__card-link {
	display: flex;
	align-items: center;
	gap: 8px;
	font-weight: 600;
	color: var(--accent-color);
}

.breakdowns__card-link i {
	width: 18px;
	height: 18px;
	transition: transform 0.3s ease;
}

.breakdowns__card-link:hover i {
	transform: translateX(4px);
}

/* ADAPTIVE FOR BREAKDOWNS */
@media (max-width: 992px) {
	.breakdowns__grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	.breakdowns__grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 576px) {
	.breakdowns {
		padding: 60px 0;
	}
}

/* ETAP 3.4: AUTHORS SECTION */

.authors {
	padding: 100px 0;
	background-color: var(--surface-color);
}

.authors__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 30px;
}

.authors__card {
	text-align: center;
}

.authors__card-photo {
	width: 140px;
	height: 140px;
	margin: 0 auto 20px;
	border-radius: 50%;
	overflow: hidden;
	border: 3px solid var(--accent-color);
}

.authors__card-photo img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.4s ease;
}

.authors__card:hover .authors__card-photo img {
	transform: scale(1.1);
}

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

.authors__card-specialization {
	color: var(--secondary-text-color);
	margin-bottom: 16px;
	font-size: 14px;
}

.authors__card-socials {
	display: flex;
	justify-content: center;
	gap: 16px;
}

.authors__card-socials a {
	color: var(--secondary-text-color);
}

.authors__card-socials a:hover {
	color: var(--accent-color);
	transform: translateY(-2px);
}

/* ADAPTIVE FOR AUTHORS */
@media (max-width: 992px) {
	.authors__grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 40px;
	}
}

@media (max-width: 576px) {
	.authors {
		padding: 60px 0;
	}
	.authors__grid {
		grid-template-columns: 1fr;
	}
}

/* ETAP 4: CONTACT SECTION */

.contact {
	padding: 100px 0;
	background-color: var(--bg-color);
}

.contact__wrapper {
	max-width: 650px;
	margin: 0 auto;
	background-color: var(--surface-color);
	padding: 40px;
	border-radius: 12px;
}

.contact__form-group {
	margin-bottom: 20px;
}

.contact__form-label {
	display: block;
	margin-bottom: 8px;
	font-weight: 500;
	font-size: 14px;
}

.contact__form-input {
	width: 100%;
	padding: 12px 16px;
	background-color: var(--bg-color);
	border: 1px solid #374151;
	border-radius: 8px;
	color: var(--primary-text-color);
	font-size: 16px;
	font-family: var(--font-body);
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact__form-input:focus {
	outline: none;
	border-color: var(--accent-color);
	box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

.contact__form-group--checkbox {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 30px;
}

.contact__form-checkbox {
	width: 18px;
	height: 18px;
	accent-color: var(--accent-color);
}

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

.contact__form-checkbox-label a {
	color: var(--accent-color);
	text-decoration: underline;
}

.contact__form-checkbox-label a:hover {
	text-decoration: none;
}

.contact__form-submit {
	width: 100%;
	padding: 16px 32px;
	background-color: var(--accent-color);
	color: var(--bg-color);
	font-family: var(--font-heading);
	font-weight: 600;
	font-size: 16px;
	border-radius: 8px;
	border: none;
	cursor: pointer;
	transition: background-color 0.3s ease, transform 0.3s ease;
}

.contact__form-submit:hover {
	background-color: var(--accent-hover-color);
	transform: translateY(-3px);
}

/* Success Message */
.contact__success-message {
	text-align: center;
	padding: 40px 20px;
}

.contact__success-icon {
	width: 80px;
	height: 80px;
	margin: 0 auto 24px;
	background-color: rgba(45, 212, 191, 0.1);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.contact__success-icon i {
	width: 40px;
	height: 40px;
	color: var(--accent-color);
}

.contact__success-title {
	font-size: 28px;
	margin-bottom: 12px;
}

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

/* ADAPTIVE FOR CONTACT */
@media (max-width: 576px) {
	.contact {
		padding: 60px 0;
	}
	.contact__wrapper {
		padding: 30px 20px;
	}
}

/* ETAP 5.1: COOKIE POP-UP */
.cookie-popup {
	position: fixed;
	bottom: 20px;
	left: 20px;
	right: 20px;
	max-width: 500px;
	background-color: var(--surface-color);
	padding: 20px;
	border-radius: 12px;
	box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
	z-index: 2000;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 20px;
	transform: translateY(200%);
	transition: transform 0.5s ease-in-out;
}

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

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

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

.cookie-popup__btn {
	padding: 10px 20px;
	background-color: var(--accent-color);
	color: var(--bg-color);
	border: none;
	border-radius: 8px;
	cursor: pointer;
	font-weight: 600;
	white-space: nowrap;
	transition: background-color 0.3s ease;
}

.cookie-popup__btn:hover {
	background-color: var(--accent-hover-color);
}

@media (max-width: 576px) {
	.cookie-popup {
		flex-direction: column;
		left: 10px;
		right: 10px;
		bottom: 10px;
		text-align: center;
	}
}

/* ETAP 5.2: POLICY PAGES STYLES */

.pages {
	padding: 120px 0 60px; /* Extra top padding to account for fixed header */
}

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

.pages h1 {
	font-size: 1.5rem;
	margin-bottom: 30px;
}

.pages h2 {
	font-size: 1.5rem;
	margin-top: 40px;
	margin-bottom: 20px;
}

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

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

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

.pages a {
	color: var(--accent-color);
	text-decoration: underline;
	font-weight: 500;
}

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

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