/* ==================================================
   01. Design Tokens
================================================== */

:root {
	--bg: #08070d;
	--surface: #12101c;
	--surface-2: #191528;
	--surface-soft: rgba(255, 255, 255, 0.04);

	--text: #f5f2ff;
	--muted: #b9b0d0;
	--soft: #7e7497;

	--purple: #8b5cf6;
	--purple-2: #c084fc;
	--blue: #60a5fa;

	--border: rgba(255, 255, 255, 0.1);
	--glow: rgba(139, 92, 246, 0.35);

	--radius-sm: 12px;
	--radius-md: 18px;
	--radius-lg: 28px;
	--radius-pill: 999px;

	--container: 1120px;
	--container-narrow: 860px;

	--space-1: 0.5rem;
	--space-2: 0.75rem;
	--space-3: 1rem;
	--space-4: 1.5rem;
	--space-5: 2rem;
	--space-6: 3rem;
	--space-7: 4rem;
	--space-8: 6rem;
}

/* ==================================================
   02. Reset & Base
================================================== */

* {
	box-sizing: border-box;
}

html {
	font-size: 16px;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: radial-gradient(circle at top, rgba(139, 92, 246, 0.18), transparent 34rem), var(--bg);
	color: var(--text);
	font-family: "Montserrat", system-ui, sans-serif;
	line-height: 1.6;
}

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

button,
input {
	font: inherit;
}

/* ==================================================
   03. Typography
================================================== */

h1,
h2,
h3 {
	font-family: "Space Grotesk", system-ui, sans-serif;
	line-height: 1;
}

h1 {
	font-size: clamp(3rem, 9vw, 7.5rem);
	margin: 1rem 0;
	letter-spacing: -0.08em;
}

h1 strong {
	color: var(--purple-2);
	text-shadow: 0 0 34px var(--glow);
}

h2 {
	font-size: clamp(2rem, 4vw, 3.4rem);
}

h3 {
	font-size: 1.35rem;
}

.eyebrow {
	color: var(--purple-2);
	text-transform: uppercase;
	letter-spacing: 0.16em;
	font-size: 0.78rem;
	font-weight: 700;
}

.lead {
	color: var(--muted);
	font-size: clamp(1rem, 2vw, 1.18rem);
	max-width: 700px;
}

/* ==================================================
   04. Layout Utilities
================================================== */

.page-shell,
.section,
.site-header,
.site-footer {
	max-width: var(--container);
	margin-inline: auto;
	padding-inline: var(--space-4);
}

.page-shell {
	padding-block: var(--space-7) var(--space-8);
}

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

.page-hero {
	max-width: 760px;
	margin-bottom: var(--space-6);
}

.page-hero h1 {
	font-size: clamp(2.6rem, 6vw, 4.8rem);
	letter-spacing: -0.06em;
	margin: 0.6rem 0 1rem;
}

.section {
	padding-block: 5rem;
}

.section-heading {
	max-width: 680px;
	margin-bottom: var(--space-5);
}

.stack {
	display: grid;
	gap: var(--space-3);
}

.grid-2 {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--space-3);
}

.grid-4 {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: var(--space-3);
}

/* ==================================================
   05. Global Components
================================================== */

/* Accessibility */
.skip-link {
	position: absolute;
	left: 1rem;
	top: -4rem;
	background: var(--purple);
	color: white;
	padding: 0.75rem 1rem;
	border-radius: var(--radius-pill);
	z-index: 20;
}

.skip-link:focus {
	top: 1rem;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip-path: inset(50%);
}

/* Header */
.site-header {
	padding-block: 1.25rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.brand {
	display: inline-flex;
	gap: 0.7rem;
	align-items: center;
	font-weight: 700;
}

.brand-mark {
	width: 2rem;
	height: 2rem;
	border-radius: 50%;
	display: grid;
	place-items: center;
	background: linear-gradient(135deg, var(--purple), var(--purple-2));
	box-shadow: 0 0 30px var(--glow);
}

.main-nav {
	display: flex;
	gap: 1.4rem;
	color: var(--muted);
	font-size: 0.92rem;
}

.main-nav a:hover,
.main-nav a:focus {
	color: var(--text);
}

/* Footer */
.site-footer {
	margin-top: var(--space-8);
	padding-block: var(--space-7) var(--space-5);
	color: var(--muted);
	border-top: 1px solid var(--border);
	display: grid;
	grid-template-columns: minmax(0, 2fr) repeat(3, minmax(140px, 1fr));
	gap: var(--space-6);
}

.footer-brand {
	max-width: 420px;
}

.footer-logo {
	margin-bottom: var(--space-4);
}

.footer-brand p {
	margin: 0 0 var(--space-3);
}

.footer-disclaimer {
	color: var(--soft);
	font-size: 0.9rem;
}

.footer-column {
	display: grid;
	align-content: start;
	gap: var(--space-2);
}

.footer-column h2 {
	margin: 0 0 var(--space-2);
	color: var(--text);
	font-size: 1rem;
	letter-spacing: 0;
}

.footer-column a {
	color: var(--muted);
	font-size: 0.95rem;
}

.footer-column a:hover,
.footer-column a:focus {
	color: var(--text);
}

.footer-bottom {
	grid-column: 1 / -1;
	margin-top: var(--space-4);
	padding-top: var(--space-4);
	border-top: 1px solid var(--border);
	display: flex;
	justify-content: space-between;
	gap: var(--space-3);
	color: var(--soft);
	font-size: 0.9rem;
}

.footer-bottom p {
	margin: 0;
}

.footer-language {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
}

.footer-language button {
	border: 1px solid var(--border);
	border-radius: var(--radius-pill);
	background: rgba(255, 255, 255, 0.04);
	color: var(--muted);
	padding: 0.45rem 0.75rem;
	cursor: not-allowed;
}

/* Cards */
.content-card,
.feature-card,
.source-box,
.term-list-card,
.term-content section,
.related-section,
.feedback-box {
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.028));
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	box-shadow: 0 24px 80px rgba(0, 0, 0, 0.16);
}

.content-card,
.feature-card,
.source-box,
.term-content section,
.related-section,
.feedback-box {
	padding: var(--space-4);
}

.feature-card:hover,
.feature-card:focus,
.term-list-card:hover,
.term-list-card:focus,
.related-card:hover,
.related-card:focus {
	transform: translateY(-3px);
	border-color: rgba(192, 132, 252, 0.5);
	box-shadow: 0 24px 90px rgba(139, 92, 246, 0.12);
}

/* Badges */
.badge {
	display: inline-flex;
	align-items: center;
	width: fit-content;
	border: 1px solid var(--border);
	color: var(--muted);
	border-radius: var(--radius-pill);
	padding: 0.35rem 0.65rem;
	font-size: 0.78rem;
	font-weight: 700;
	line-height: 1;
}

.badge-official {
	color: #bfdbfe;
	border-color: rgba(96, 165, 250, 0.5);
	background: rgba(37, 99, 235, 0.16);
}

.badge-unofficial {
	color: #d1d5db;
	background: rgba(156, 163, 175, 0.12);
}

/* Buttons */
.button,
.feedback-actions button,
.hero-search button {
	border: 0;
	border-radius: var(--radius-pill);
	padding: 0.9rem 1.35rem;
	background: linear-gradient(135deg, var(--purple), var(--purple-2));
	color: white;
	font-weight: 700;
	cursor: pointer;
}

.button-secondary,
.feedback-actions button {
	border: 1px solid var(--border);
	background: rgba(255, 255, 255, 0.05);
	color: var(--text);
}

/* Links */
.back-link {
	color: var(--muted);
	font-size: 0.95rem;
}

.back-link:hover,
.back-link:focus,
.source-box a {
	color: var(--purple-2);
}

/* ==================================================
   06. Homepage
================================================== */

.hero {
	min-height: 78vh;
	position: relative;
	display: grid;
	place-items: center;
	padding: 5rem 1.25rem;
	overflow: hidden;
}

.hero-content {
	max-width: 880px;
	text-align: center;
	position: relative;
	z-index: 2;
}

.hero-text {
	max-width: 680px;
	margin: 0 auto 2rem;
	color: var(--muted);
	font-size: clamp(1rem, 2vw, 1.25rem);
}

.hero-search {
	display: flex;
	gap: var(--space-2);
	max-width: 760px;
	margin: 0 auto;
	padding: 0.55rem;
	background: rgba(255, 255, 255, 0.06);
	border: 1px solid var(--border);
	border-radius: var(--radius-pill);
	box-shadow: 0 0 45px rgba(139, 92, 246, 0.12);
}

.hero-search:focus-within {
	border-color: rgba(192, 132, 252, 0.75);
	box-shadow: 0 0 55px var(--glow);
}

.hero-search input {
	flex: 1;
	min-width: 0;
	border: 0;
	outline: 0;
	color: var(--text);
	background: transparent;
	padding: 0.9rem 1.2rem;
}

.popular-searches {
	margin-top: var(--space-3);
	display: flex;
	gap: 0.65rem;
	justify-content: center;
	flex-wrap: wrap;
}

.popular-searches a {
	color: var(--muted);
	border: 1px solid var(--border);
	border-radius: var(--radius-pill);
	padding: 0.5rem 0.8rem;
	font-size: 0.88rem;
	background: rgba(255, 255, 255, 0.04);
}

.popular-searches a:hover,
.popular-searches a:focus {
	color: var(--text);
	border-color: rgba(192, 132, 252, 0.6);
}

.hero-bg {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	opacity: 0.16;
	pointer-events: none;
}

.hero-bg svg {
	width: min(78vw, 720px);
	stroke: var(--purple-2);
	fill: none;
	stroke-width: 6;
	animation: float 9s ease-in-out infinite;
}

.hero-bg path:nth-child(3),
.hero-bg path:nth-child(5) {
	fill: var(--purple-2);
	stroke: none;
}

.card-icon {
	font-size: 2rem;
}

.feature-card p,
.source-box p {
	color: var(--muted);
	margin: 0;
}

.source-box a {
	display: inline-block;
	margin-top: var(--space-3);
	font-weight: 700;
}

/* ==================================================
   07. Glossary Index
================================================== */

.term-list-card {
	display: grid;
	gap: var(--space-4);
	padding: 1.35rem;
	min-height: 190px;
}

.term-list-card h2 {
	margin: 0 0 0.65rem;
	font-size: 1.55rem;
	letter-spacing: -0.03em;
}

.term-list-card p {
	margin: 0;
	color: var(--muted);
	font-size: 0.98rem;
	line-height: 1.6;
}

.term-list-meta {
	display: flex;
	gap: var(--space-1);
	align-items: flex-end;
	flex-wrap: wrap;
	align-self: end;
}

/* ==================================================
   08. Glossary Term Page
================================================== */

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

.term-hero {
	margin-top: var(--space-5);
	display: flex;
	align-items: center;
	gap: var(--space-4);
}

.term-icon {
	width: 5rem;
	height: 5rem;
	border-radius: 1.5rem;
	display: grid;
	place-items: center;
	background: linear-gradient(135deg, rgba(139, 92, 246, 0.35), rgba(192, 132, 252, 0.14));
	border: 1px solid var(--border);
	color: var(--purple-2);
	font-family: "Space Grotesk", system-ui, sans-serif;
	font-size: 2rem;
	font-weight: 700;
	box-shadow: 0 0 48px rgba(139, 92, 246, 0.16);
}

.term-hero h1 {
	margin: 0.4rem 0;
	font-size: clamp(3rem, 7vw, 5.8rem);
}

.term-badges {
	display: flex;
	gap: var(--space-1);
	flex-wrap: wrap;
}

.term-definition {
	margin: var(--space-5) 0;
	font-size: clamp(1.35rem, 3vw, 2rem);
	color: var(--text);
	line-height: 1.35;
}

.term-content {
	display: grid;
	gap: var(--space-3);
}

.term-content h2,
.related-section h2,
.feedback-box h2 {
	margin-top: 0;
	font-size: 1.4rem;
}

.term-content p {
	color: var(--muted);
	margin-bottom: 0;
}

.related-section,
.feedback-box,
.source-box.small {
	margin-top: var(--space-3);
}

.related-grid {
	display: grid;
	gap: var(--space-2);
}

.related-card {
	display: grid;
	gap: 0.25rem;
	padding: var(--space-3);
	border-radius: var(--radius-md);
	border: 1px solid var(--border);
	background: rgba(255, 255, 255, 0.035);
}

.related-card span {
	color: var(--muted);
	font-size: 0.92rem;
}

.feedback-actions {
	display: flex;
	gap: var(--space-2);
	flex-wrap: wrap;
}

/* ==================================================
   09. Search
================================================== */

.search-page-form {
	margin: 0 0 var(--space-5);
}

.search-meta {
	color: var(--muted);
	margin-bottom: var(--space-4);
	min-height: 1.6rem;
}

.search-results {
	display: grid;
	gap: var(--space-4);
}

.search-result-card {
	display: block;
	padding: var(--space-5);
	border-radius: var(--radius-lg);
	background: linear-gradient(90deg, rgba(139, 92, 246, 0.18), transparent 0.35rem), linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.028));
	border: 1px solid var(--border);
	box-shadow: 0 24px 80px rgba(0, 0, 0, 0.18);
}

.search-result-card:hover,
.search-result-card:focus {
	transform: translateY(-3px);
	border-color: rgba(192, 132, 252, 0.5);
	box-shadow: 0 24px 90px rgba(139, 92, 246, 0.12);
}

.search-result-card h2 {
	margin: 0;
	font-size: clamp(1.65rem, 3vw, 2.25rem);
	letter-spacing: -0.04em;
}

.search-result-card p {
	margin: 0;
	color: var(--muted);
	max-width: 720px;
}

.search-result-top {
	display: flex;
	gap: var(--space-1);
	flex-wrap: wrap;
	margin-bottom: var(--space-2);
}

.search-empty {
	margin-top: var(--space-6);
	padding: var(--space-5);
	text-align: center;
	border-radius: var(--radius-lg);
	border: 1px solid var(--border);
	background: radial-gradient(circle at top, rgba(139, 92, 246, 0.14), transparent 18rem), rgba(255, 255, 255, 0.04);
}

.search-empty h2 {
	margin: 0 0 var(--space-2);
	font-size: 1.6rem;
}

.search-empty p {
	color: var(--muted);
	margin: 0 0 var(--space-3);
}

.popular-searches.left {
	justify-content: center;
}

/* ==================================================
   10. Autocomplete
================================================== */

.autocomplete-panel {
	max-width: 760px;
	margin: var(--space-3) auto 0;
	text-align: left;
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	background: radial-gradient(circle at top left, rgba(139, 92, 246, 0.14), transparent 18rem), rgba(18, 16, 28, 0.96);
	box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
	overflow: hidden;
	backdrop-filter: blur(18px);
}

.autocomplete-header {
	padding: var(--space-3) var(--space-4);
	color: var(--soft);
	font-size: 0.82rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	border-bottom: 1px solid var(--border);
}

.autocomplete-results {
	display: grid;
}

.autocomplete-item {
	display: block;
	padding: var(--space-3) var(--space-4);
	border-bottom: 1px solid var(--border);
}

.autocomplete-item:last-child {
	border-bottom: 0;
}

.autocomplete-item:hover,
.autocomplete-item:focus {
	background: rgba(255, 255, 255, 0.045);
}

.autocomplete-meta {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-1);
	margin-bottom: var(--space-2);
}

.autocomplete-item strong {
	display: block;
	font-family: "Space Grotesk", system-ui, sans-serif;
	font-size: 1.15rem;
	letter-spacing: -0.02em;
}

.autocomplete-item p {
	margin: 0.25rem 0 0;
	color: var(--muted);
	font-size: 0.92rem;
	line-height: 1.5;
}

/* ==================================================
   12. Responsive Rules
================================================== */

@media (max-width: 820px) {
	.main-nav {
		display: none;
	}

	.hero-search {
		border-radius: var(--radius-md);
		flex-direction: column;
	}

	.hero-search button {
		width: 100%;
	}

	.grid-4 {
		grid-template-columns: 1fr;
	}

	.site-footer {
		grid-template-columns: 1fr;
	}

	.footer-bottom {
		flex-direction: column;
	}
}

@media (max-width: 760px) {
	.page-shell {
		padding-block-start: var(--space-6);
	}

	.grid-2 {
		grid-template-columns: 1fr;
	}

	.term-list-card {
		min-height: auto;
	}
}

@media (max-width: 620px) {
	.term-hero {
		align-items: flex-start;
		flex-direction: column;
	}

	.term-icon {
		width: 4.25rem;
		height: 4.25rem;
	}
}

/* ==================================================
   11. Accessibility & Motion
================================================== */

@keyframes float {
	0%,
	100% {
		transform: translateY(0) rotate(0deg);
	}
	50% {
		transform: translateY(-16px) rotate(3deg);
	}
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		scroll-behavior: auto !important;
		animation: none !important;
		transition: none !important;
	}
}