/*--------------------------------------------------------------
 * Nova Theme — Main Stylesheet
 *
 * Table of Contents:
 * 1. CSS Custom Properties
 * 2. Reset / Base
 * 3. Layout
 * 4. Typography
 * 5. Header & Navigation
 * 6. Hero Section
 * 7. Carousel
 * 8. Cards / Posts Grid
 * 9. Single Post
 * 10. Pages
 * 11. Archive
 * 12. 404
 * 13. Footer
 * 14. Buttons
 * 15. Animations
 * 16. Accessibility
 * 17. Dark Mode
 * 18. Media Queries
 *--------------------------------------------------------------*/

/* ==========================================================================
   1. CSS Custom Properties
   ========================================================================== */

:root {
	/* Colors — Light */
	--nova-accent: #6366f1;
	--nova-accent-hover: #4f46e5;
	--nova-bg: #ffffff;
	--nova-bg-alt: #f8fafc;
	--nova-surface: #ffffff;
	--nova-text: #1e293b;
	--nova-text-muted: #64748b;
	--nova-border: #e2e8f0;
	--nova-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
	--nova-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);

	/* Layout */
	--nova-container: 1200px;
	--nova-container-narrow: 780px;
	--nova-gap: 2rem;
	--nova-radius: 12px;
	--nova-radius-sm: 8px;

	/* Typography */
	--nova-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
	--nova-leading: 1.7;

	/* Transitions */
	--nova-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. Reset / Base
   ========================================================================== */

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

html {
	scroll-behavior: smooth;
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	font-family: var(--nova-font);
	font-size: 1rem;
	line-height: var(--nova-leading);
	color: var(--nova-text);
	background-color: var(--nova-bg);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

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

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

a:hover,
a:focus-visible {
	color: var(--nova-accent-hover);
}

h1, h2, h3, h4, h5, h6 {
	margin: 0 0 0.5em;
	font-weight: 700;
	line-height: 1.25;
	color: var(--nova-text);
}

p {
	margin: 0 0 1em;
}

ul, ol {
	padding-left: 1.25em;
}

/* ==========================================================================
   3. Layout
   ========================================================================== */

.container {
	width: 100%;
	max-width: var(--nova-container);
	margin-inline: auto;
	padding-inline: 1.25rem;
}

.container--narrow {
	max-width: var(--nova-container-narrow);
}

.site-content {
	min-height: 60vh;
}

.site-main {
	padding-block: 3rem;
}

/* ==========================================================================
   4. Typography
   ========================================================================== */

.entry-content {
	font-size: 1.0625rem;
	line-height: 1.8;
}

.entry-content h2 {
	margin-top: 2em;
	font-size: 1.5rem;
}

.entry-content h3 {
	margin-top: 1.5em;
	font-size: 1.25rem;
}

.entry-content blockquote {
	margin: 1.5em 0;
	padding: 1rem 1.5rem;
	border-left: 4px solid var(--nova-accent);
	background: var(--nova-bg-alt);
	border-radius: 0 var(--nova-radius-sm) var(--nova-radius-sm) 0;
	font-style: italic;
	color: var(--nova-text-muted);
}

.entry-content pre {
	padding: 1.25rem;
	overflow-x: auto;
	background: var(--nova-bg-alt);
	border-radius: var(--nova-radius-sm);
	font-size: 0.875rem;
}

.entry-content code {
	padding: 0.15em 0.4em;
	background: var(--nova-bg-alt);
	border-radius: 4px;
	font-size: 0.9em;
}

.entry-content pre code {
	padding: 0;
	background: none;
}

/* ==========================================================================
   5. Header & Navigation
   ========================================================================== */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--nova-bg);
	border-bottom: 1px solid var(--nova-border);
	backdrop-filter: blur(12px);
	background: rgba(255, 255, 255, 0.85);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 4rem;
}

.site-branding .site-title {
	font-size: 1.25rem;
	font-weight: 800;
	color: var(--nova-text);
	letter-spacing: -0.02em;
}

.site-branding .site-title:hover {
	color: var(--nova-accent);
}

.site-branding .custom-logo {
	max-height: 2.5rem;
	width: auto;
}

/* Mobile menu toggle */
.menu-toggle {
	display: flex;
	flex-direction: column;
	gap: 5px;
	padding: 0.5rem;
	border: none;
	background: none;
	cursor: pointer;
}

.menu-toggle__bar {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--nova-text);
	border-radius: 2px;
	transition: transform var(--nova-transition), opacity var(--nova-transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

/* Main navigation */
.main-navigation {
	display: none;
}

.main-navigation.is-open {
	display: block;
	position: absolute;
	top: 100%;
	left: 0;
	right: 0;
	background: var(--nova-bg);
	border-bottom: 1px solid var(--nova-border);
	box-shadow: var(--nova-shadow-lg);
	animation: nova-slide-down 0.3s ease;
}

.main-navigation ul {
	list-style: none;
	margin: 0;
	padding: 1rem 1.25rem;
}

.main-navigation li {
	margin: 0;
}

.main-navigation a {
	display: block;
	padding: 0.625rem 0;
	color: var(--nova-text);
	font-size: 0.9375rem;
	font-weight: 500;
	transition: color var(--nova-transition);
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a {
	color: var(--nova-accent);
}

/* ==========================================================================
   6. Hero Section
   ========================================================================== */

.hero {
	padding: 4rem 0 3rem;
	background: var(--nova-bg-alt);
}

.hero__inner {
	display: flex;
	flex-direction: column-reverse;
	align-items: center;
	gap: 2.5rem;
}

.hero__content {
	text-align: center;
}

.hero__name {
	font-size: clamp(2rem, 5vw, 3.5rem);
	font-weight: 800;
	letter-spacing: -0.03em;
	line-height: 1.1;
	margin-bottom: 0.75rem;
}

.hero__bio {
	font-size: clamp(1rem, 2vw, 1.25rem);
	color: var(--nova-text-muted);
	max-width: 520px;
	margin-inline: auto;
	margin-bottom: 1.75rem;
}

.hero__cta {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
}

.hero__image-wrap {
	flex-shrink: 0;
}

.hero__image {
	width: 220px;
	height: 220px;
	border-radius: 50%;
	object-fit: cover;
	box-shadow: var(--nova-shadow-lg);
	border: 4px solid var(--nova-surface);
}

/* ==========================================================================
   7. Carousel
   ========================================================================== */

.latest-posts {
	padding: 4rem 0;
}

.section-title {
	font-size: clamp(1.5rem, 3vw, 2rem);
	font-weight: 700;
	text-align: center;
	margin-bottom: 2rem;
}

.carousel {
	position: relative;
	overflow: hidden;
}

.carousel__track {
	display: flex;
	transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
	will-change: transform;
}

.carousel__slide {
	flex: 0 0 100%;
	min-width: 0;
	padding: 0 0.5rem;
}

.carousel__slide > .carousel__image-link {
	display: block;
	overflow: hidden;
	border-radius: var(--nova-radius) var(--nova-radius) 0 0;
}

.carousel__image {
	width: 100%;
	aspect-ratio: 3 / 2;
	object-fit: cover;
	transition: transform var(--nova-transition);
}

.carousel__slide:hover .carousel__image {
	transform: scale(1.03);
}

.carousel__placeholder {
	width: 100%;
	aspect-ratio: 3 / 2;
	background: linear-gradient(135deg, var(--nova-bg-alt), var(--nova-border));
}

.carousel__body {
	padding: 1.25rem;
	background: var(--nova-surface);
	border: 1px solid var(--nova-border);
	border-top: 0;
	border-radius: 0 0 var(--nova-radius) var(--nova-radius);
}

.carousel__title {
	font-size: 1.125rem;
	font-weight: 600;
	margin-bottom: 0.5rem;
}

.carousel__title a {
	color: var(--nova-text);
}

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

.carousel__excerpt {
	color: var(--nova-text-muted);
	font-size: 0.9375rem;
	margin-bottom: 1rem;
}

/* Carousel Controls */
.carousel__controls {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1rem;
	margin-top: 1.5rem;
}

.carousel__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	border: 1px solid var(--nova-border);
	border-radius: 50%;
	background: var(--nova-surface);
	color: var(--nova-text);
	cursor: pointer;
	transition: all var(--nova-transition);
}

.carousel__btn:hover {
	background: var(--nova-accent);
	border-color: var(--nova-accent);
	color: #fff;
}

.carousel__dots {
	display: flex;
	gap: 0.5rem;
}

.carousel__dot {
	width: 10px;
	height: 10px;
	border-radius: 50%;
	border: none;
	background: var(--nova-border);
	cursor: pointer;
	transition: background var(--nova-transition), transform var(--nova-transition);
	padding: 0;
}

.carousel__dot.is-active {
	background: var(--nova-accent);
	transform: scale(1.2);
}

/* ==========================================================================
   8. Cards / Posts Grid
   ========================================================================== */

.posts-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--nova-gap);
}

.card {
	background: var(--nova-surface);
	border: 1px solid var(--nova-border);
	border-radius: var(--nova-radius);
	overflow: hidden;
	transition: box-shadow var(--nova-transition), transform var(--nova-transition);
}

.card:hover {
	box-shadow: var(--nova-shadow-lg);
	transform: translateY(-2px);
}

.card__image-link {
	display: block;
	overflow: hidden;
}

.card__image {
	width: 100%;
	aspect-ratio: 3 / 2;
	object-fit: cover;
	transition: transform var(--nova-transition);
}

.card:hover .card__image {
	transform: scale(1.03);
}

.card__body {
	padding: 1.25rem;
}

.card__meta {
	display: flex;
	align-items: center;
	gap: 1rem;
	font-size: 0.8125rem;
	color: var(--nova-text-muted);
	margin-bottom: 0.5rem;
}

.card__title {
	font-size: 1.125rem;
	font-weight: 600;
	margin-bottom: 0.5rem;
}

.card__title a {
	color: var(--nova-text);
}

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

.card__excerpt {
	color: var(--nova-text-muted);
	font-size: 0.9375rem;
	margin-bottom: 1rem;
}

/* No results */
.no-results {
	text-align: center;
	padding: 4rem 0;
}

/* ==========================================================================
   9. Single Post
   ========================================================================== */

.single-post__header {
	margin-bottom: 2rem;
}

.single-post__meta {
	display: flex;
	align-items: center;
	gap: 1rem;
	font-size: 0.875rem;
	color: var(--nova-text-muted);
	margin-bottom: 0.75rem;
}

.single-post__title {
	font-size: clamp(1.75rem, 4vw, 2.5rem);
	font-weight: 800;
	letter-spacing: -0.02em;
	line-height: 1.2;
}

.single-post__featured {
	margin: 1.5rem 0 0;
}

.single-post__image {
	border-radius: var(--nova-radius);
	width: 100%;
}

.single-post__content {
	margin-bottom: 2rem;
}

.single-post__footer {
	padding-top: 1.5rem;
	border-top: 1px solid var(--nova-border);
}

.single-post__tags a {
	display: inline-block;
	padding: 0.25em 0.75em;
	margin: 0.25rem 0.25rem 0.25rem 0;
	background: var(--nova-bg-alt);
	border-radius: 9999px;
	font-size: 0.8125rem;
	color: var(--nova-text-muted);
}

.single-post__tags a:hover {
	background: var(--nova-accent);
	color: #fff;
}

/* Post navigation */
.post-navigation {
	margin-top: 2.5rem;
	padding-top: 2rem;
	border-top: 1px solid var(--nova-border);
}

.post-navigation .nav-links {
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.post-navigation .nav-subtitle {
	display: block;
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--nova-text-muted);
}

.post-navigation .nav-title {
	font-weight: 600;
}

/* Pagination */
.nav-links {
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 0.5rem;
	padding-top: 2rem;
}

.page-numbers {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 2.25rem;
	height: 2.25rem;
	padding: 0 0.5rem;
	border-radius: var(--nova-radius-sm);
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--nova-text-muted);
	transition: all var(--nova-transition);
}

.page-numbers:hover {
	background: var(--nova-bg-alt);
	color: var(--nova-text);
}

.page-numbers.current {
	background: var(--nova-accent);
	color: #fff;
}

/* ==========================================================================
   10. Pages
   ========================================================================== */

.page-content__header {
	margin-bottom: 2rem;
}

.page-content__title {
	font-size: clamp(1.75rem, 4vw, 2.5rem);
	font-weight: 800;
	letter-spacing: -0.02em;
}

/* ==========================================================================
   11. Archive
   ========================================================================== */

.archive-header {
	text-align: center;
	margin-bottom: 2.5rem;
}

.archive-header__title {
	font-size: clamp(1.5rem, 3vw, 2rem);
	font-weight: 700;
}

.archive-header__description {
	color: var(--nova-text-muted);
	max-width: 600px;
	margin-inline: auto;
}

/* ==========================================================================
   12. 404
   ========================================================================== */

.error-404 {
	text-align: center;
	padding: 4rem 0;
}

.error-404__code {
	display: block;
	font-size: clamp(5rem, 15vw, 10rem);
	font-weight: 800;
	line-height: 1;
	color: var(--nova-border);
	letter-spacing: -0.05em;
}

.error-404__title {
	font-size: 1.75rem;
	margin-top: 0.5rem;
}

.error-404__description {
	color: var(--nova-text-muted);
	max-width: 480px;
	margin-inline: auto;
	margin-bottom: 2rem;
}

/* ==========================================================================
   13. Footer
   ========================================================================== */

.site-footer {
	background: var(--nova-bg-alt);
	border-top: 1px solid var(--nova-border);
	padding: 2.5rem 0;
}

.site-footer__inner {
	text-align: center;
}

.footer-widgets {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--nova-gap);
	margin-bottom: 2rem;
	text-align: left;
}

.footer-widgets .widget-title {
	font-size: 0.875rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: 1rem;
}

.footer-navigation {
	margin-bottom: 1.5rem;
}

.footer-menu {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 1.5rem;
}

.footer-menu a {
	color: var(--nova-text-muted);
	font-size: 0.875rem;
	font-weight: 500;
}

.footer-menu a:hover {
	color: var(--nova-accent);
}

.site-info {
	font-size: 0.8125rem;
	color: var(--nova-text-muted);
}

.site-info a {
	color: var(--nova-text-muted);
	font-weight: 500;
}

.site-info a:hover {
	color: var(--nova-accent);
}

/* ==========================================================================
   14. Buttons
   ========================================================================== */

.btn {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.75rem 1.5rem;
	border: 2px solid transparent;
	border-radius: var(--nova-radius-sm);
	font-family: var(--nova-font);
	font-size: 0.9375rem;
	font-weight: 600;
	cursor: pointer;
	transition: all var(--nova-transition);
	text-decoration: none;
}

.btn--primary {
	background: var(--nova-accent);
	color: #fff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
	background: var(--nova-accent-hover);
	color: #fff;
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.btn--outline {
	background: transparent;
	border-color: var(--nova-border);
	color: var(--nova-text);
}

.btn--outline:hover,
.btn--outline:focus-visible {
	border-color: var(--nova-accent);
	color: var(--nova-accent);
}

.btn--sm {
	padding: 0.5rem 1rem;
	font-size: 0.8125rem;
}

.btn__icon {
	transition: transform var(--nova-transition);
}

.btn:hover .btn__icon {
	transform: translateX(3px);
}

/* ==========================================================================
   15. Animations
   ========================================================================== */

@keyframes nova-fade-up {
	from {
		opacity: 0;
		transform: translateY(20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes nova-slide-down {
	from {
		opacity: 0;
		transform: translateY(-8px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.nova-animate {
	opacity: 0;
	transform: translateY(20px);
}

.nova-animate.is-visible {
	animation: nova-fade-up 0.6s ease forwards;
}

.nova-animate--delay.is-visible {
	animation-delay: 0.15s;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}

	html {
		scroll-behavior: auto;
	}

	.nova-animate {
		opacity: 1;
		transform: none;
	}
}

/* ==========================================================================
   16. Accessibility
   ========================================================================== */

.screen-reader-text {
	clip: rect(1px, 1px, 1px, 1px);
	position: absolute !important;
	height: 1px;
	width: 1px;
	overflow: hidden;
	word-wrap: normal !important;
}

.screen-reader-text:focus {
	background-color: var(--nova-bg);
	border-radius: var(--nova-radius-sm);
	box-shadow: var(--nova-shadow-lg);
	clip: auto !important;
	color: var(--nova-accent);
	display: block;
	font-size: 0.875rem;
	font-weight: 600;
	height: auto;
	left: 0.5rem;
	padding: 1rem 1.5rem;
	text-decoration: none;
	top: 0.5rem;
	width: auto;
	z-index: 200;
}

:focus-visible {
	outline: 2px solid var(--nova-accent);
	outline-offset: 2px;
}

/* ==========================================================================
   17. Dark Mode
   ========================================================================== */

@media (prefers-color-scheme: dark) {
	:root {
		--nova-bg: #0f172a;
		--nova-bg-alt: #1e293b;
		--nova-surface: #1e293b;
		--nova-text: #f1f5f9;
		--nova-text-muted: #94a3b8;
		--nova-border: #334155;
		--nova-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
		--nova-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.35);
	}

	.site-header {
		background: rgba(15, 23, 42, 0.85);
	}

	.hero__image {
		border-color: var(--nova-surface);
	}
}

/* ==========================================================================
   18. Media Queries
   ========================================================================== */

/* ── SM (≥ 480px) ────────────────────────────────────────────────────── */
@media (min-width: 30em) {
	.carousel__slide {
		flex: 0 0 50%;
	}
}

/* ── MD (≥ 768px) ────────────────────────────────────────────────────── */
@media (min-width: 48em) {
	.site-main {
		padding-block: 4rem;
	}

	/* Nav — show inline */
	.menu-toggle {
		display: none;
	}

	.main-navigation {
		display: block;
		position: static;
		background: none;
		border: none;
		box-shadow: none;
	}

	.main-navigation ul {
		display: flex;
		gap: 0.25rem;
		padding: 0;
	}

	.main-navigation a {
		padding: 0.375rem 0.75rem;
		border-radius: var(--nova-radius-sm);
	}

	.main-navigation a:hover {
		background: var(--nova-bg-alt);
	}

	/* Hero — side by side */
	.hero {
		padding: 5rem 0 4rem;
	}

	.hero__inner {
		flex-direction: row;
		text-align: left;
	}

	.hero__content {
		text-align: left;
		flex: 1;
	}

	.hero__bio {
		margin-inline: 0;
	}

	.hero__image {
		width: 300px;
		height: 300px;
	}

	/* Grid */
	.posts-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	/* Footer */
	.footer-widgets {
		grid-template-columns: repeat(2, 1fr);
	}

	/* Post nav */
	.post-navigation .nav-links {
		flex-direction: row;
		justify-content: space-between;
	}
}

/* ── LG (≥ 1024px) ──────────────────────────────────────────────────── */
@media (min-width: 64em) {
	.hero {
		padding: 6rem 0 5rem;
	}

	.hero__image {
		width: 380px;
		height: 380px;
	}

	.carousel__slide {
		flex: 0 0 33.333%;
	}

	.posts-grid {
		grid-template-columns: repeat(3, 1fr);
	}

	.footer-widgets {
		grid-template-columns: repeat(3, 1fr);
	}
}