:root {
	--background: #E8E9F2;
	--surface: #F4F3F0;
	--surface-alt: #FFFFFF;

	--text: #30313D;
	--muted: #596487;

	--accent: #6B789E;
	--accent-hover: #596687;
	--accent-light: #8793B5;

	--border: #D3D7E7;

	--font-heading: 'Lato', sans-serif;
	--font-body: 'Lato', sans-serif;

	--radius: 28px;
	--radius-small: 12px;

	--content-width: 1120px;
}

:root[data-theme="dark"] {
	--background: #0A0A10;
	--surface: #14141C;
	--surface-alt: #1B1B25;

	--text: #F2F2F7;
	--muted: #9099BE;

	--accent: #8793B5;
	--accent-hover: #A3ADCB;
	--accent-light: #6B789E;

	--border: #272733;
}

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

a,
button {
	touch-action: manipulation;
}

.reveal {
	opacity: 0;
	transform: translateY(22px);
	transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.is-visible {
	opacity: 1;
	transform: translateY(0);
}

.features-grid .feature-card:nth-child(2) {
	transition-delay: 90ms;
}

.features-grid .feature-card:nth-child(3) {
	transition-delay: 180ms;
}

.features-grid .feature-card:nth-child(4) {
	transition-delay: 270ms;
}

@media (prefers-reduced-motion: reduce) {
	.reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}
}

html {
	scroll-behavior: smooth;
	scroll-padding-top: 110px;
}

body {
	min-height: 100vh;
	background: var(--background);
	color: var(--text);
	font-family: var(--font-body);
	font-size: 16px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
}

a {
	color: inherit;
	text-decoration: none;
}

button {
	font: inherit;
}

button,
a {
	-webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
	outline: 3px solid var(--accent);
	outline-offset: 4px;
}

.site-header {
	width: min(calc(100% - 64px), var(--content-width));
	min-height: 96px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 32px;
	position: relative;
	z-index: 10;
}

.site-logo {
	display: inline-flex;
	align-items: baseline;
	flex-shrink: 0;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: 2.8rem;
	font-weight: 900;
	line-height: 1;
	letter-spacing: -0.065em;
}

.site-logo span {
	color: var(--accent);
}

.site-menu {
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 28px;
}

.site-menu[hidden] {
	display: flex;
}

.site-menu a {
	color: var(--muted);
	font-size: 0.95rem;
	font-weight: 700;
	transition: color 180ms ease;
}

.site-menu a:hover,
.site-menu a[aria-current="page"] {
	color: var(--text);
}

.site-menu .nav-github {
	padding: 10px 19px;
	border: 1px solid var(--border);
	border-radius: 999px;
	background: var(--surface);
	color: var(--text);
	transition:
		background 180ms ease,
		border-color 180ms ease,
		color 180ms ease;
}

.site-menu .nav-github:hover {
	background: var(--accent);
	border-color: var(--accent);
	color: #FFFFFF;
}

.theme-toggle {
	display: inline-flex;
	width: 42px;
	height: 42px;
	flex-shrink: 0;
	align-items: center;
	justify-content: center;
	border: 1.5px solid var(--border);
	border-radius: 50%;
	background: var(--surface);
	color: var(--text);
	cursor: pointer;
	touch-action: manipulation;
	transition:
		background 180ms ease,
		border-color 180ms ease,
		color 180ms ease,
		transform 180ms ease;
}

.theme-toggle:hover {
	border-color: var(--accent);
	color: var(--accent);
}

.theme-toggle:active {
	transform: scale(0.92);
}

.theme-icon {
	width: 21px;
	height: 21px;
}

.theme-icon-sun {
	display: none;
}

:root[data-theme="dark"] .theme-icon-sun {
	display: block;
}

:root[data-theme="dark"] .theme-icon-moon {
	display: none;
}

.menu-toggle {
	display: none;
	width: 58px;
	height: 58px;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	gap: 6px;
	border: 1.5px solid var(--border);
	border-radius: 17px;
	background: var(--surface);
	cursor: pointer;
}

.menu-toggle span {
	display: block;
	width: 25px;
	height: 3px;
	border-radius: 10px;
	background: var(--text);
	transition:
		transform 180ms ease,
		opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
	transform: translateY(9px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:last-child {
	transform: translateY(-9px) rotate(-45deg);
}

.site-main {
	width: 100%;
}

.hero,
.project-section,
.contact-section,
.features-hero,
.features-section,
.features-cta,
.not-found {
	width: min(calc(100% - 64px), var(--content-width));
	margin-left: auto;
	margin-right: auto;
	border: 1.5px solid var(--border);
	border-radius: var(--radius);
	background: var(--surface);
}

.hero {
	min-height: 510px;
	padding: clamp(42px, 7vw, 88px);
	display: flex;
	align-items: center;
	overflow: hidden;
}

.hero-content {
	width: 100%;
	max-width: 850px;
}

.eyebrow,
.section-eyebrow {
	margin-bottom: 22px;
	color: var(--muted);
	font-family: var(--font-heading);
	font-size: 0.95rem;
	font-weight: 900;
	letter-spacing: 0.12em;
	line-height: 1.4;
	text-transform: uppercase;
}

.hero h1 {
	margin-bottom: 24px;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: clamp(4.5rem, 10vw, 8.5rem);
	font-weight: 900;
	line-height: 0.98;
	letter-spacing: -0.075em;
	overflow-wrap: anywhere;
}

.hero h1 span {
	color: var(--accent);
}

.hero-description {
	max-width: 720px;
	margin-bottom: 32px;
	color: var(--text);
	font-size: clamp(1.05rem, 2vw, 1.3rem);
	font-weight: 400;
	line-height: 1.75;
}

.hero-actions {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 14px;
}

.button-link {
	min-height: 58px;
	padding: 15px 25px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 11px;
	border: 1.5px solid transparent;
	border-radius: var(--radius-small);
	font-size: 1rem;
	font-weight: 900;
	text-align: center;
	transition:
		background 180ms ease,
		color 180ms ease,
		border-color 180ms ease,
		transform 180ms ease;
}

.button-link:hover {
	transform: translateY(-2px);
}

.primary-button {
	background: var(--accent);
	color: #FFFFFF;
}

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

.secondary-button {
	border-color: var(--border);
	background: var(--surface-alt);
	color: var(--text);
}

.secondary-button:hover {
	border-color: var(--accent);
	color: var(--accent-hover);
}

.button-icon {
	width: 23px;
	height: 23px;
	flex-shrink: 0;
}

.hero-status {
	margin-top: 36px;
	display: flex;
	align-items: center;
	gap: 12px;
	color: var(--muted);
	font-size: 0.98rem;
	font-weight: 700;
}

.status-dot {
	width: 11px;
	height: 11px;
	flex-shrink: 0;
	border-radius: 50%;
	background: #6D9B7E;
	box-shadow: 0 0 0 4px rgba(109, 155, 126, 0.13);
}

.project-section,
.contact-section {
	margin-top: 44px;
	padding: clamp(36px, 6vw, 72px);
}

.not-found {
	min-height: 560px;
	padding: clamp(42px, 7vw, 88px);
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	overflow: hidden;
}

.not-found-content {
	width: 100%;
	max-width: 620px;
	display: flex;
	flex-direction: column;
	align-items: center;
}

.error-code {
	margin-bottom: 4px;
	color: var(--accent);
	font-family: var(--font-heading);
	font-size: clamp(5.5rem, 14vw, 10rem);
	font-weight: 900;
	line-height: 0.95;
	letter-spacing: -0.06em;
}

.not-found h1 {
	margin-bottom: 18px;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: clamp(1.6rem, 3.5vw, 2.3rem);
	font-weight: 900;
	letter-spacing: -0.03em;
}

.not-found p {
	max-width: 460px;
	margin-bottom: 20px;
	color: var(--muted);
	font-size: 1.05rem;
	line-height: 1.7;
}

.error-snippet {
	margin-bottom: 32px;
	padding: 9px 18px;
	border: 1.5px solid var(--border);
	border-radius: var(--radius-small);
	background: var(--surface-alt);
	color: var(--muted);
	font-family: 'SFMono-Regular', Consolas, monospace;
	font-size: 0.85rem;
}

.not-found-actions {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	gap: 14px;
}

.section-content {
	max-width: 790px;
}

.project-section h2,
.contact-section h2,
.features-heading h2,
.features-cta h2 {
	margin-bottom: 20px;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: clamp(2rem, 5vw, 3.4rem);
	font-weight: 900;
	line-height: 1.12;
	letter-spacing: -0.055em;
}

.project-section p:not(.eyebrow),
.contact-section p:not(.eyebrow),
.features-heading p:not(.section-eyebrow),
.features-cta p:not(.section-eyebrow) {
	max-width: 730px;
	color: var(--muted);
	font-size: 1.08rem;
	line-height: 1.8;
}

.text-link {
	display: inline-flex;
	align-items: center;
	gap: 9px;
	margin-top: 27px;
	color: var(--accent-hover);
	font-weight: 900;
	transition: gap 180ms ease;
}

.text-link:hover {
	gap: 15px;
}

.contact-links {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-top: 28px;
}

.contact-links a {
	min-width: 110px;
	padding: 12px 20px;
	border: 1.5px solid var(--border);
	border-radius: 999px;
	background: var(--surface-alt);
	color: var(--text);
	font-weight: 700;
	text-align: center;
	transition:
		background 180ms ease,
		border-color 180ms ease,
		color 180ms ease,
		transform 180ms ease;
}

.contact-links a:hover {
	transform: translateY(-2px);
	border-color: var(--accent);
	background: var(--accent);
	color: #FFFFFF;
}

.site-footer {
	width: min(calc(100% - 64px), var(--content-width));
	margin: 0 auto;
	padding: 34px 0 38px;
	color: var(--muted);
	font-size: 0.9rem;
	font-weight: 600;
	text-align: center;
}

.site-footer span {
	color: var(--accent);
	font-weight: 900;
}

/* FEATURES */

.features-hero {
	min-height: 320px;
	padding: clamp(40px, 7vw, 76px);
	display: flex;
	align-items: center;
}

.features-content {
	max-width: 800px;
}

.features-content h1 {
	margin-bottom: 20px;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: clamp(3.5rem, 9vw, 6.5rem);
	font-weight: 900;
	line-height: 1;
	letter-spacing: -0.07em;
}

.features-content>p:last-child {
	max-width: 690px;
	color: var(--muted);
	font-size: 1.15rem;
	line-height: 1.8;
}

.features-section {
	margin-top: 44px;
	padding: clamp(36px, 6vw, 72px);
}

.features-heading {
	max-width: 790px;
	margin-bottom: 35px;
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 18px;
}

.feature-card {
	min-width: 0;
	padding: 28px;
	border: 1.5px solid var(--border);
	border-radius: 18px;
	background: var(--surface-alt);
}

.feature-number {
	display: inline-block;
	margin-bottom: 22px;
	color: var(--accent);
	font-family: var(--font-heading);
	font-size: 0.9rem;
	font-weight: 900;
	letter-spacing: 0.12em;
}

.feature-card h3 {
	margin-bottom: 12px;
	color: var(--text);
	font-family: var(--font-heading);
	font-size: 1.45rem;
	font-weight: 900;
	line-height: 1.25;
	letter-spacing: -0.035em;
}

.feature-card p {
	color: var(--muted);
	font-size: 1rem;
	line-height: 1.75;
}

.features-system .feature-card {
	max-width: 620px;
}

.features-cta {
	margin-top: 44px;
	padding: clamp(36px, 6vw, 72px);
}

.button {
	min-height: 56px;
	margin-top: 26px;
	padding: 14px 24px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border-radius: var(--radius-small);
	background: var(--accent);
	color: #FFFFFF;
	font-weight: 900;
	transition:
		background 180ms ease,
		transform 180ms ease;
}

.button:hover {
	transform: translateY(-2px);
	background: var(--accent-hover);
}

/* RESPONSIVE */

@media (max-width: 900px) {
	.site-header {
		width: min(calc(100% - 48px), var(--content-width));
	}

	.site-menu {
		gap: 17px;
	}

	.site-menu a {
		font-size: 0.88rem;
	}

	.site-logo {
		font-size: 2.45rem;
	}

	.hero,
	.project-section,
	.contact-section,
	.features-hero,
	.features-section,
	.features-cta {
		width: calc(100% - 48px);
	}

	.hero h1 {
		font-size: clamp(4.5rem, 11vw, 7rem);
	}
}

@media (max-width: 700px) {
	html {
		scroll-padding-top: 85px;
	}

	.site-header {
		width: calc(100% - 40px);
		min-height: 104px;
		gap: 15px;
	}

	.site-logo {
		font-size: 2.9rem;
	}

	.menu-toggle {
		display: flex;
		width: 58px;
		height: 58px;
	}

	.site-menu[hidden] {
		display: none;
	}

	.site-menu:not([hidden]) {
		position: absolute;
		top: calc(100% - 4px);
		left: 0;
		right: 0;
		display: flex;
		align-items: stretch;
		flex-direction: column;
		gap: 0;
		padding: 12px;
		border: 1.5px solid var(--border);
		border-radius: 19px;
		background: var(--surface);
		box-shadow: 0 14px 35px rgba(48, 49, 61, 0.12);
	}

	.site-menu a {
		padding: 13px 15px;
		border-radius: 10px;
		font-size: 1rem;
	}

	.site-menu .nav-github {
		margin-top: 7px;
		text-align: center;
	}

	.site-menu .theme-toggle {
		align-self: center;
		margin-top: 7px;
	}

	.hero,
	.project-section,
	.contact-section,
	.features-hero,
	.features-section,
	.features-cta {
		width: calc(100% - 36px);
		border-radius: 25px;
	}

	.hero {
		min-height: 0;
		padding: 43px 30px;
	}

	.eyebrow,
	.section-eyebrow {
		margin-bottom: 19px;
		font-size: 0.82rem;
		letter-spacing: 0.105em;
	}

	.hero h1 {
		margin-bottom: 21px;
		font-size: clamp(4.1rem, 15vw, 6.3rem);
		letter-spacing: -0.075em;
	}

	.hero-description {
		margin-bottom: 27px;
		font-size: 1.08rem;
		line-height: 1.65;
	}

	.hero-actions {
		align-items: stretch;
		flex-direction: column;
		gap: 12px;
	}

	.button-link {
		width: 100%;
		min-height: 58px;
		padding: 14px 18px;
		font-size: 1rem;
	}

	.hero-status {
		margin-top: 30px;
		font-size: 0.94rem;
	}

	.project-section,
	.contact-section,
	.features-section,
	.features-cta {
		margin-top: 25px;
		padding: 36px 29px;
	}

	.project-section h2,
	.contact-section h2,
	.features-heading h2,
	.features-cta h2 {
		font-size: clamp(2rem, 8vw, 2.8rem);
	}

	.project-section p:not(.eyebrow),
	.contact-section p:not(.eyebrow),
	.features-heading p:not(.section-eyebrow),
	.features-cta p:not(.section-eyebrow) {
		font-size: 1rem;
		line-height: 1.75;
	}

	.contact-links {
		flex-direction: column;
	}

	.contact-links a {
		width: 100%;
	}

	.site-footer {
		width: calc(100% - 40px);
		padding: 30px 0;
		font-size: 0.83rem;
	}

	.features-hero {
		min-height: 270px;
		padding: 39px 29px;
	}

	.features-content h1 {
		font-size: clamp(3.5rem, 13vw, 5rem);
	}

	.features-content>p:last-child {
		font-size: 1.02rem;
		line-height: 1.7;
	}

	.features-grid {
		grid-template-columns: 1fr;
		gap: 13px;
	}

	.feature-card {
		padding: 25px;
	}

	.features-system .feature-card {
		max-width: none;
	}
}

@media (max-width: 380px) {
	.site-header {
		min-height: 90px;
	}

	.site-logo {
		font-size: 2.5rem;
	}

	.menu-toggle {
		width: 48px;
		height: 48px;
	}

	.hero,
	.project-section,
	.contact-section,
	.features-hero,
	.features-section,
	.features-cta {
		width: calc(100% - 28px);
		border-radius: 21px;
	}

	.hero {
		padding: 35px 23px;
	}

	.hero h1 {
		font-size: 3.8rem;
	}

	.project-section,
	.contact-section,
	.features-section,
	.features-cta {
		padding: 30px 23px;
	}
}

/* ACCESSIBILITY */

@media (prefers-reduced-motion: reduce) {

	*,
	*::before,
	*::after {
		scroll-behavior: auto !important;
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
	}
}