/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
	--color-primary: #2563EB;
	--color-primary-dark: #1D4ED8;
	--color-primary-light: #EFF6FF;
	--color-ink: #0F172A;
	--color-bg: #F8FAFC;
	--color-surface: #FFFFFF;
	--color-border: #E2E8F0;
	--color-text: #0F172A;
	--color-text-secondary: #475569;
	--color-text-muted: #94A3B8;
	--color-success: #16A34A;
	--color-success-light: #F0FDF4;

	--font-display: 'Manrope', 'Inter', sans-serif;
	--font-body: 'Inter', -apple-system, sans-serif;
	--font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

	--radius-sm: 8px;
	--radius-md: 12px;
	--radius-lg: 16px;
	--radius-pill: 999px;

	--container: 1200px;
	--container-narrow: 760px;

	--space-1: 8px;
	--space-2: 16px;
	--space-3: 24px;
	--space-4: 32px;
	--space-5: 48px;
	--space-6: 80px;
	--space-7: 120px;
}

/* ==========================================================================
   Base
   ========================================================================== */
body {
	font-family: var(--font-body);
	background: var(--color-bg);
	color: var(--color-text);
	font-size: 16px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
	font-family: var(--font-display);
	font-weight: 700;
	line-height: 1.2;
	color: var(--color-ink);
	margin: 0 0 var(--space-2);
}

h1 { font-size: clamp(2.25rem, 4vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 var(--space-2); color: var(--color-text-secondary); }

a { text-decoration: none; }

.container {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 var(--space-3);
}

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

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

.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	background: var(--color-ink);
	color: #fff;
	padding: var(--space-1) var(--space-2);
	z-index: 100;
	border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
	left: 0;
}

:focus-visible {
	outline: 2px solid var(--color-primary);
	outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
	* { animation: none !important; transition: none !important; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	font-family: var(--font-body);
	font-weight: 600;
	font-size: 0.9rem;
	padding: 10px 20px;
	border-radius: var(--radius-sm);
	border: 1px solid transparent;
	cursor: pointer;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
	white-space: nowrap;
}

.btn--primary {
	background: var(--color-primary);
	color: #fff;
}
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--ghost {
	background: transparent;
	border-color: var(--color-border);
	color: var(--color-text);
}
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn--lg {
	padding: 14px 28px;
	font-size: 1rem;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
	background: var(--color-surface);
	border-bottom: 1px solid var(--color-border);
	position: sticky;
	top: 0;
	z-index: 50;
}

.site-header__inner {
	display: flex;
	align-items: center;
	gap: var(--space-4);
	height: 72px;
}

.site-logo__text {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: 1.25rem;
	color: var(--color-ink);
}

.primary-nav { flex: 1; }

.nav-menu {
	list-style: none;
	display: flex;
	gap: var(--space-4);
	margin: 0;
	padding: 0;
}

.nav-menu a {
	color: var(--color-text-secondary);
	font-weight: 500;
	font-size: 0.9rem;
}
.nav-menu a:hover { color: var(--color-primary); }

.site-header__cta {
	display: flex;
	gap: var(--space-2);
	align-items: center;
}

.nav-toggle {
	display: none;
	flex-direction: column;
	gap: 4px;
	background: none;
	border: none;
	cursor: pointer;
	padding: 8px;
}
.nav-toggle__bar {
	width: 20px;
	height: 2px;
	background: var(--color-ink);
}

@media (max-width: 860px) {
	.nav-toggle { display: flex; }
	.primary-nav {
		display: none;
		position: absolute;
		top: 72px;
		left: 0;
		right: 0;
		background: var(--color-surface);
		border-bottom: 1px solid var(--color-border);
		padding: var(--space-3);
	}
	.primary-nav.is-open { display: block; }
	.nav-menu { flex-direction: column; gap: var(--space-2); }
	.site-header__cta .btn--ghost { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
	padding: var(--space-7) 0 var(--space-6);
}

.hero__inner {
	display: grid;
	grid-template-columns: 1.1fr 0.9fr;
	gap: var(--space-6);
	align-items: center;
}

.hero__sub {
	font-size: 1.1rem;
	max-width: 46ch;
}

.hero__actions {
	display: flex;
	gap: var(--space-2);
	margin-top: var(--space-4);
}

.preview-card {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	padding: var(--space-3);
	box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
}

.preview-card__header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	font-size: 0.8rem;
	color: var(--color-text-muted);
	margin-bottom: var(--space-2);
	padding-bottom: var(--space-2);
	border-bottom: 1px solid var(--color-border);
}

.preview-card__badge {
	background: var(--color-success-light);
	color: var(--color-success);
	font-family: var(--font-mono);
	font-size: 0.7rem;
	padding: 3px 8px;
	border-radius: var(--radius-pill);
}

.preview-card__row {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 10px 0;
	font-family: var(--font-mono);
}

.preview-card__row + .preview-card__row {
	border-top: 1px solid var(--color-border);
}

.preview-card__label {
	font-family: var(--font-body);
	color: var(--color-text-secondary);
	font-size: 0.9rem;
}

.preview-card__value {
	font-weight: 500;
	color: var(--color-ink);
}

.preview-card__row--best .preview-card__value {
	color: var(--color-success);
	font-weight: 600;
}

@media (max-width: 860px) {
	.hero__inner { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Sections / cards
   ========================================================================== */
.section {
	padding: var(--space-6) 0;
}
.section--alt {
	background: var(--color-surface);
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
}

.section__head {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	margin-bottom: var(--space-4);
	gap: var(--space-2);
}
.section__head h2 { margin: 0; }

.section__link {
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--color-primary);
	white-space: nowrap;
}

.page-header {
	padding: var(--space-6) 0 var(--space-3);
}
.page-header p {
	max-width: 60ch;
}

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

@media (max-width: 860px) {
	.card-grid, .card-grid--wide { grid-template-columns: 1fr; }
}

.card {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	overflow: hidden;
	display: flex;
	flex-direction: column;
}

.card__media img { width: 100%; height: 180px; object-fit: cover; }

.card__body {
	padding: var(--space-3);
	display: flex;
	flex-direction: column;
	gap: 6px;
	flex: 1;
}

.card__eyebrow {
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--color-primary);
}

.card__title { margin: 0; font-size: 1.05rem; }
.card__title a { color: var(--color-ink); }
.card__title a:hover { color: var(--color-primary); }

.card__excerpt { font-size: 0.9rem; margin: 0; flex: 1; }

.card__cta {
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--color-primary);
	margin-top: var(--space-1);
}

.empty-state {
	border: 1px dashed var(--color-border);
	border-radius: var(--radius-md);
	padding: var(--space-5);
	text-align: center;
	color: var(--color-text-muted);
}

/* ==========================================================================
   Single content
   ========================================================================== */
.single-wrap { padding: var(--space-6) 0; }
.single-media { margin: var(--space-3) 0; border-radius: var(--radius-md); overflow: hidden; }
.prose { font-size: 1.05rem; line-height: 1.75; }
.prose h2, .prose h3 { margin-top: var(--space-4); }

.tool-placeholder {
	background: var(--color-primary-light);
	border: 1px dashed var(--color-primary);
	border-radius: var(--radius-md);
	padding: var(--space-3);
	margin: var(--space-4) 0;
	font-size: 0.9rem;
	color: var(--color-primary-dark);
}

.author-bio {
	display: flex;
	gap: var(--space-2);
	align-items: flex-start;
	margin-top: var(--space-5);
	padding-top: var(--space-4);
	border-top: 1px solid var(--color-border);
}

.author-bio__avatar img {
	border-radius: 50%;
	display: block;
}

.author-bio__label {
	display: block;
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--color-text-muted);
}

.author-bio__name {
	display: block;
	font-family: var(--font-display);
	font-weight: 700;
	color: var(--color-ink);
	font-size: 1rem;
	margin: 2px 0 6px;
}

.author-bio__desc {
	font-size: 0.9rem;
	margin: 0;
}

/* ==========================================================================
   Newsletter band
   ========================================================================== */
.newsletter-band {
	background: var(--color-ink);
	padding: var(--space-6) 0;
}
.newsletter-band h2, .newsletter-band p { color: #fff; }
.newsletter-band p { color: #94A3B8; }

.newsletter-band__inner {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: var(--space-4);
	flex-wrap: wrap;
}

.newsletter-form {
	display: flex;
	gap: var(--space-1);
}
.newsletter-form input {
	background: rgba(255,255,255,0.08);
	border: 1px solid rgba(255,255,255,0.2);
	color: #fff;
	padding: 12px 16px;
	border-radius: var(--radius-sm);
	font-size: 0.9rem;
	min-width: 240px;
}
.newsletter-form input::placeholder { color: #64748B; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
	background: var(--color-surface);
	border-top: 1px solid var(--color-border);
	padding-top: var(--space-6);
}

.site-footer__inner {
	display: grid;
	grid-template-columns: 1.4fr repeat(3, 1fr);
	gap: var(--space-4);
	padding-bottom: var(--space-5);
}

.footer-col--brand p { max-width: 32ch; font-size: 0.9rem; }

.footer-col h3 {
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--color-text-muted);
	margin-bottom: var(--space-2);
}

.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--color-text-secondary); font-size: 0.9rem; }
.footer-col a:hover { color: var(--color-primary); }

.site-footer__bottom {
	border-top: 1px solid var(--color-border);
	padding: var(--space-3) 0;
}
.site-footer__bottom p { margin: 0; font-size: 0.85rem; }

@media (max-width: 860px) {
	.site-footer__inner { grid-template-columns: 1fr 1fr; }
}

.author-bio {
	display: flex;
	gap: 16px;
	align-items: flex-start;
	margin-top: 48px;
	padding-top: 32px;
	border-top: 1px solid var(--color-border);
}
.author-bio__avatar img { border-radius: 50%; display: block; }
.author-bio__label {
	display: block;
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--color-text-muted);
}
.author-bio__name {
	display: block;
	font-family: var(--font-display);
	font-weight: 700;
	color: var(--color-ink);
	font-size: 1rem;
	margin: 2px 0 6px;
}
.author-bio__desc { font-size: 0.9rem; margin: 0; }