/* ============================================================
   PARKR READER — BASE STYLESHEET
   Research: NN/g · Baymard · W3C/WCAG 2.1
   Units: rem (inherits browser default)
   ============================================================ */

/* Root: NEVER override with px — preserve user browser settings */
:root {
	font-size: 100%;

	/* Typography tokens */
	--pr-font-display: var(--wp--custom--font-display, 'Clash Display', Georgia, serif);
	--pr-font-body:    var(--wp--custom--font-body,    'General Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
	--pr-font-mono:    var(--wp--custom--font-mono,    'JetBrains Mono', 'Courier New', monospace);

	--pr-type-body:    clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
	--pr-type-body-lg: 1.1875rem;
	--pr-type-h3:      clamp(1.125rem,  1.0625rem + 0.25vw, 1.25rem);
	--pr-type-h2:      clamp(1.375rem,  1.25rem + 0.5vw,    1.625rem);
	--pr-type-h1:      clamp(2rem,      1.5rem + 2vw,       3.25rem);
	--pr-type-display: clamp(2.75rem,   2rem + 3vw,         5rem);
	--pr-type-caption: 0.875rem;
	--pr-type-mono:    0.9375rem;

	/* Rhythm */
	--pr-lead-body:    1.65;
	--pr-lead-heading: 1.15;
	--pr-lead-tight:   1.28;
	--pr-lead-code:    1.60;
	--pr-lead-caption: 1.50;

	/* Measure */
	--pr-measure-prose: 68ch;
	--pr-measure-wide:  90ch;

	/* Spacing */
	--pr-space-para:   1.5em;
	--pr-space-h2-top: 2.5em;
	--pr-space-h2-bot: 0.6em;
	--pr-space-h3-top: 1.75em;
	--pr-space-h3-bot: 0.5em;
	--pr-space-li:     0.4em;

	/* Transitions */
	--pr-transition: 150ms ease;
	--pr-transition-slow: 300ms ease;
}

/* ============================================================
   RESET
   ============================================================ */

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

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

body {
	margin: 0;
	font-family: var(--pr-font-body);
	font-size: var(--pr-type-body);
	line-height: var(--pr-lead-body);
	color: var(--pr-color-ink);
	background-color: var(--pr-color-paper);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	transition: background-color var(--pr-transition-slow), color var(--pr-transition-slow);
}

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

/* ============================================================
   LAYOUT
   ============================================================ */

.site-wrapper {
	display: grid;
	grid-template-rows: auto 1fr auto;
	min-height: 100vh;
}

.site-header {
	border-bottom: 1px solid var(--pr-color-rule);
	background: var(--pr-color-paper);
	position: sticky;
	top: 0;
	z-index: 100;
	transition: background-color var(--pr-transition-slow), border-color var(--pr-transition-slow);
}

.site-header-inner {
	max-width: var(--pr-measure-wide);
	margin: 0 auto;
	padding: 1rem 2rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
}

.site-footer {
	border-top: 1px solid var(--pr-color-rule);
	padding: 2rem;
	font-family: var(--pr-font-mono);
	font-size: var(--pr-type-caption);
	color: var(--pr-color-ink-faint);
}

.site-footer-inner {
	max-width: var(--pr-measure-wide);
	margin: 0 auto;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 1rem;
	flex-wrap: wrap;
}

/* Content area */
.wp-block-post-content,
.entry-content {
	max-width: var(--pr-measure-prose);
}

/* Wide align */
.alignwide {
	max-width: var(--pr-measure-wide) !important;
}

.alignfull {
	max-width: 100% !important;
	width: 100%;
}

/* ============================================================
   TYPOGRAPHY — HEADINGS
   ============================================================ */

h1, .h1 {
	font-family: var(--pr-font-display);
	font-size: var(--pr-type-h1);
	line-height: var(--pr-lead-heading);
	letter-spacing: -0.02em;
	font-weight: 400;
	color: var(--pr-color-ink);
}

h2, .h2 {
	font-family: var(--pr-font-display);
	font-size: var(--pr-type-h2);
	line-height: var(--pr-lead-heading);
	letter-spacing: -0.01em;
	font-weight: 400;
	margin-block-start: var(--pr-space-h2-top);
	margin-block-end: var(--pr-space-h2-bot);
	color: var(--pr-color-ink);
}

h3, .h3 {
	font-family: var(--pr-font-display);
	font-size: var(--pr-type-h3);
	line-height: var(--pr-lead-tight);
	font-style: italic;
	font-weight: 400;
	margin-block-start: var(--pr-space-h3-top);
	margin-block-end: var(--pr-space-h3-bot);
	color: var(--pr-color-ink);
}

h4, .h4 {
	font-family: var(--pr-font-body);
	font-size: var(--pr-type-body-lg);
	line-height: var(--pr-lead-body);
	font-weight: 600;
	margin-block-start: 1.5em;
	margin-block-end: 0.4em;
}

h5, h6 {
	font-family: var(--pr-font-mono);
	font-size: var(--pr-type-caption);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--pr-color-ink-faint);
	margin-block-start: 1.5em;
	margin-block-end: 0.4em;
}

/* First heading in content needs no top margin */
.entry-content > h1:first-child,
.entry-content > h2:first-child,
.entry-content > h3:first-child,
.wp-block-post-content > h1:first-child,
.wp-block-post-content > h2:first-child,
.wp-block-post-content > h3:first-child {
	margin-block-start: 0;
}

/* ============================================================
   TYPOGRAPHY — BODY
   ============================================================ */

p {
	margin-block-start: 0;
	margin-block-end: var(--pr-space-para);
}

p:last-child { margin-block-end: 0; }

strong, b { font-weight: 600; }
em, i { font-style: italic; }

a {
	color: var(--pr-color-accent);
	text-decoration: underline;
	text-decoration-thickness: 1px;
	text-underline-offset: 3px;
	transition: color var(--pr-transition);
}

a:hover { color: var(--pr-color-ink); }
a:focus-visible {
	outline: 2px solid var(--pr-color-accent);
	outline-offset: 2px;
	border-radius: 2px;
}

/* ============================================================
   LISTS
   ============================================================ */

ul, ol {
	padding-inline-start: 1.5em;
	margin-block-end: var(--pr-space-para);
}

li {
	line-height: var(--pr-lead-body);
}

li + li {
	margin-block-start: var(--pr-space-li);
}

/* ============================================================
   BLOCKQUOTE
   ============================================================ */

blockquote {
	margin-inline: 0;
	padding-inline-start: 1.25rem;
	border-inline-start: 3px solid var(--pr-color-accent);
	margin-block: 2em;
	color: var(--pr-color-ink-muted);
	font-style: italic;
}

blockquote p:last-child { margin-block-end: 0; }

blockquote cite {
	display: block;
	font-style: normal;
	font-family: var(--pr-font-mono);
	font-size: var(--pr-type-caption);
	color: var(--pr-color-ink-faint);
	margin-top: 0.5em;
}

/* Pull quote */
.wp-block-pullquote {
	border-top: 2px solid var(--pr-color-accent);
	border-bottom: 2px solid var(--pr-color-accent);
	padding: 1.5rem 0;
	margin-block: 2.5rem;
	text-align: left;
}

.wp-block-pullquote blockquote {
	border: none;
	padding: 0;
	margin: 0;
	font-family: var(--pr-font-display);
	font-size: var(--pr-type-h3);
	line-height: 1.4;
	color: var(--pr-color-ink);
}

/* ============================================================
   FIGURES & CAPTIONS
   ============================================================ */

figure {
	margin-inline: 0;
	margin-block: 2em;
}

figcaption,
.wp-element-caption,
.wp-caption-text {
	font-family: var(--pr-font-body);
	font-size: var(--pr-type-caption);
	line-height: var(--pr-lead-caption);
	color: var(--pr-color-ink-faint);
	font-style: italic;
	margin-top: 0.5em;
}

/* ============================================================
   INLINE CODE
   ============================================================ */

:not(pre) > code {
	font-family: var(--pr-font-mono);
	font-size: 0.875em;
	background: var(--pr-color-paper-warm);
	padding: 0.1em 0.35em;
	border-radius: 3px;
	color: var(--pr-color-accent);
	border: 1px solid var(--pr-color-rule);
}

/* ============================================================
   SITE TITLE / LOGO
   ============================================================ */

.site-title,
.wp-block-site-title a {
	font-family: var(--pr-font-display);
	font-size: 1.25rem;
	font-weight: 400;
	color: var(--pr-color-ink);
	text-decoration: none;
	letter-spacing: -0.01em;
}

/* ============================================================
   NAVIGATION
   ============================================================ */

.wp-block-navigation {
	font-family: var(--pr-font-mono);
	font-size: 0.875rem;
	letter-spacing: 0.04em;
}

.wp-block-navigation a {
	color: var(--pr-color-ink-muted);
	text-decoration: none;
	transition: color var(--pr-transition);
}

.wp-block-navigation a:hover {
	color: var(--pr-color-accent);
}

/* ============================================================
   DARK MODE SWITCH (Custom Block)
   ============================================================ */

.parkr-dark-mode-switch {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	cursor: pointer;
	background: none;
	border: 1px solid var(--pr-color-rule);
	border-radius: 99px;
	padding: 0.375rem 0.75rem 0.375rem 0.5rem;
	font-family: var(--pr-font-mono);
	font-size: 0.75rem;
	color: var(--pr-color-ink-muted);
	letter-spacing: 0.04em;
	transition: border-color var(--pr-transition), color var(--pr-transition), background var(--pr-transition);
	user-select: none;
}

.parkr-dark-mode-switch:hover {
	border-color: var(--pr-color-accent);
	color: var(--pr-color-accent);
}

.parkr-dark-mode-switch:focus-visible {
	outline: 2px solid var(--pr-color-accent);
	outline-offset: 2px;
}

.parkr-dm-track {
	position: relative;
	width: 2rem;
	height: 1.125rem;
	background: var(--pr-color-rule);
	border-radius: 99px;
	transition: background var(--pr-transition);
	flex-shrink: 0;
}

[data-theme="dark"] .parkr-dm-track {
	background: var(--pr-color-accent);
}

.parkr-dm-thumb {
	position: absolute;
	top: 2px;
	left: 2px;
	width: 0.875rem;
	height: 0.875rem;
	background: white;
	border-radius: 50%;
	transition: transform var(--pr-transition), background var(--pr-transition);
	box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

[data-theme="dark"] .parkr-dm-thumb {
	transform: translateX(0.875rem);
}

.parkr-dm-icon-sun,
.parkr-dm-icon-moon {
	width: 1rem;
	height: 1rem;
	flex-shrink: 0;
	transition: opacity var(--pr-transition);
}

[data-theme="light"] .parkr-dm-icon-moon { opacity: 0.4; }
[data-theme="dark"]  .parkr-dm-icon-sun  { opacity: 0.4; }

.parkr-dm-label {
	min-width: 2.5rem;
}

/* ============================================================
   POST META
   ============================================================ */

.parkr-post-meta {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 0.75rem;
	font-family: var(--pr-font-mono);
	font-size: var(--pr-type-caption);
	color: var(--pr-color-ink-faint);
	letter-spacing: 0.03em;
	margin-block-end: 2rem;
}

.parkr-post-meta a {
	color: var(--pr-color-accent);
	text-decoration: none;
	font-size: 0.6875rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.parkr-post-meta a:hover { text-decoration: underline; }

.parkr-meta-sep {
	color: var(--pr-color-rule);
}

/* ============================================================
   TABLES
   ============================================================ */

table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.9375rem;
	margin-block-end: var(--pr-space-para);
}

th {
	font-family: var(--pr-font-mono);
	font-size: 0.6875rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--pr-color-ink-faint);
	padding: 0.5rem 0.75rem;
	text-align: left;
	border-bottom: 2px solid var(--pr-color-rule);
}

td {
	padding: 0.6rem 0.75rem;
	border-bottom: 1px solid var(--pr-color-rule);
	vertical-align: top;
}

tr:hover td {
	background: var(--pr-color-paper-warm);
}

/* ============================================================
   HORIZONTAL RULE
   ============================================================ */

hr,
.wp-block-separator {
	border: none;
	border-top: 1px solid var(--pr-color-rule);
	margin-block: 2.5rem;
}

/* ============================================================
   READING PROGRESS BAR
   ============================================================ */

.parkr-reading-progress {
	position: fixed;
	top: 0;
	left: 0;
	height: 2px;
	background: var(--pr-color-accent);
	z-index: 200;
	width: 0%;
	transition: width 0.1s linear;
	pointer-events: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
	.site-header-inner {
		padding: 0.875rem 1rem;
	}

	h2 { margin-block-start: 2em; }
	h3 { margin-block-start: 1.5em; }
}

@media (max-width: 480px) {
	:root {
		--pr-space-h2-top: 2em;
		--pr-space-h3-top: 1.25em;
	}
}

/* ============================================================
   PRINT
   ============================================================ */

@media print {
	.site-header,
	.site-footer,
	.parkr-dark-mode-switch,
	.parkr-reading-progress,
	.wp-block-navigation {
		display: none !important;
	}

	body {
		font-size: 12pt;
		line-height: 1.6;
		color: #000;
		background: #fff;
	}

	a { color: #000; text-decoration: none; }
	a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #555; }
}