/* ==========================================================================
   Jim Collinsworth — Out of My Lane
   Pure HTML & Modern CSS Design System
   Inspired by Bear Blog (pinewind) and Mark Boulton (anewcanon)
   Zero JavaScript • 99.9% Pure HTML5 • Automatic Dark Mode
   ========================================================================== */

:root {
  /* Warm paper / editorial light palette (WCAG AAA compliant) */
  --bg: #faf8f5;
  --bg-card: #ffffff;
  --bg-subtle: #f2eee6;
  --text: #1f2022;
  --text-muted: #55575a;
  --border: #dfd9ce;
  --border-subtle: #eae4d8;
  --link: #8a3710;
  --link-hover: #501e06;
  --accent: var(--link);
  --accent-hover: var(--link-hover);
  --border-color: var(--border);
  --card-bg: var(--bg-card);
  --tag-bg: #eae5d9;
  --tag-text: #454744;
  --code-bg: #ebe6db;
  --border-header: #b5b0a6;

  /* Typography */
  --font-serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  
  --max-width: 1080px;
  --line-height-body: 1.7;
}

.app-launch-btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.5rem 1rem;
  background: var(--link);
  color: #ffffff !important;
  border-radius: 4px;
  border: 1px solid var(--link);
  transition: background 0.15s ease;
}

.app-launch-btn:hover {
  background: var(--link-hover);
  color: #ffffff !important;
}

.app-data-btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  color: var(--text) !important;
  border-radius: 4px;
  transition: background 0.15s ease;
}

.app-data-btn:hover {
  background: var(--bg-subtle);
}

/* Category & Provenance Badges */
.category-badge {
  display: inline-flex;
  align-items: center;
  vertical-align: -1px;
}

.category-badge.dual-badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.category-icon {
  display: inline-block;
  vertical-align: middle;
}

/* Interactive Embedded Application Container */
.app-embed-container {
  position: relative;
  width: 100%;
  height: 850px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem 0 2rem;
  background-color: var(--bg-card);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.app-embed-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

@media (max-width: 768px) {
  .app-embed-container {
    height: 650px;
  }
}

/* Manual Theme Toggle (Pure CSS :has) */
/* When in default Light mode, checking #theme-toggle switches to Dark */
body:has(#theme-toggle:checked) {
  --bg: #141617;
  --bg-card: #1c1e20;
  --bg-subtle: #232628;
  --text: #eae8e3;
  --text-muted: #a6a9ac;
  --border: #2e3235;
  --border-subtle: #25282a;
  --link: #e2955a;
  --link-hover: #f5bb8c;
  --tag-bg: #292d30;
  --tag-text: #d0cecd;
  --code-bg: #222527;
  --border-header: #44494e;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Deep slate & warm charcoal dark palette (WCAG AAA compliant) */
    --bg: #141617;
    --bg-card: #1c1e20;
    --bg-subtle: #232628;
    --text: #eae8e3;
    --text-muted: #a6a9ac;
    --border: #2e3235;
    --border-subtle: #25282a;
    --link: #e2955a;
    --link-hover: #f5bb8c;
    --tag-bg: #292d30;
    --tag-text: #d0cecd;
    --code-bg: #222527;
    --border-header: #44494e;
  }

  /* In OS dark mode, checking #theme-toggle flips back to Light */
  body:has(#theme-toggle:checked) {
    --bg: #faf8f5;
    --bg-card: #ffffff;
    --bg-subtle: #f2eee6;
    --text: #1f2022;
    --text-muted: #55575a;
    --border: #dfd9ce;
    --border-subtle: #eae4d8;
    --link: #8a3710;
    --link-hover: #501e06;
    --tag-bg: #eae5d9;
    --tag-text: #454744;
    --code-bg: #ebe6db;
    --border-header: #b5b0a6;
  }
}

/* Global Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

/* Respect user browser base font size scaling */
html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

body {
  margin: 0;
  padding: 1.25rem 2rem 3rem;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: var(--line-height-body);
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-wrap: break-word;
  overflow-x: clip;
}

/* Fluid & Responsive Media Defaults (Never overflow viewport or container) */
img, picture, video, canvas {
  max-width: 100%;
  height: auto;
}

/* Skip to main content link (WCAG 2.4.1) */
.skip-link {
  position: absolute;
  top: -120px;
  left: 1.5rem;
  padding: 0.65rem 1.25rem;
  background: var(--link);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 6px 6px;
  z-index: 10000;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  transition: top 0.15s ease-in-out;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 0;
  outline: 3px solid var(--text);
  outline-offset: 2px;
}

/* High-contrast focus indicators for keyboard & assistive technology (WCAG 2.4.7 & 2.4.11) */
:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 3px;
  border-radius: 3px;
}

/* Screen reader accessible text utility (WCAG 1.3.1) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

/* Supersize Desktop (> 1360px) */
@media (min-width: 1360px) {
  :root {
    --max-width: 1380px;
  }
  body {
    padding: 1.5rem 3rem 4rem;
  }
  .site-title {
    font-size: 1.95rem;
  }
  .site-tagline {
    font-size: 1.45rem;
  }
}

/* Tablets (640px - 1024px) */
@media (max-width: 1024px) {
  body {
    padding: 1.25rem 1.75rem 2.5rem;
  }
}

/* Mobile & Compact Navigation (< 768px) */
@media (max-width: 768px) {
  html {
    font-size: 94%;
  }
  body {
    padding: 0.85rem 1rem 2rem;
    font-size: 1rem;
    line-height: 1.55;
  }
  header.site-header {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-bottom: 0.85rem;
    padding-bottom: 0.35rem;
    border-bottom: 3px solid var(--border-header);
  }
  .site-branding {
    display: flex;
    align-items: center;
    margin: 0;
    flex-shrink: 0;
  }
  .site-title {
    font-size: 1.15rem;
    white-space: nowrap;
    margin: 0;
  }
  .site-tagline {
    display: none !important;
  }
  .site-nav-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.4rem;
    margin: 0;
  }
  nav.desktop-nav,
  body:has(#contrast-toggle:checked) nav.desktop-nav {
    display: none !important;
  }
  .mobile-nav-dropdown,
  body:has(#contrast-toggle:checked) .mobile-nav-dropdown {
    display: inline-flex !important;
    align-items: center;
    position: relative;
  }
  .mobile-nav-summary {
    padding: 0.2rem 0.5rem;
    font-size: 0.82rem;
  }
  .site-controls {
    display: inline-flex;
    align-items: center;
    gap: 1px;
    background-color: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 1px;
    margin-left: 0;
  }
  .control-btn {
    width: 25px;
    height: 25px;
    min-width: 25px;
    min-height: 25px;
    border-radius: 4px;
    border: none;
  }

  /* Content & Headings Scaling */
  h1, .post-title-full {
    font-size: 1.35rem;
    line-height: 1.25;
    margin-bottom: 0.4rem;
  }
  h2 {
    font-size: 1.15rem;
    margin-top: 1.25rem;
    margin-bottom: 0.35rem;
  }
  h3 {
    font-size: 1.05rem;
    margin-top: 1rem;
    margin-bottom: 0.25rem;
  }
  article p, .page-intro p {
    margin-bottom: 0.75rem;
  }
  .page-intro {
    margin-bottom: 0.85rem;
    padding-bottom: 0.5rem;
    font-size: 0.92rem;
    line-height: 1.45;
  }
  .intro-blurb {
    margin-bottom: 1rem;
    padding: 0;
    font-size: 0.95rem;
  }

  /* Compact Mobile Post & Book Listings (1-2 lines max) */
  .post-list, .book-list {
    margin: 0.25rem 0 1rem;
  }
  .post-item, .book-item {
    margin-bottom: 0.75rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .post-item.featured {
    margin-bottom: 0.85rem;
    padding-bottom: 0.75rem;
  }
  .post-header, .book-header {
    margin-bottom: 0.15rem;
  }
  .post-title, .book-title {
    font-size: 1.02rem;
    line-height: 1.25;
    margin: 0 0 0.15rem;
  }
  .post-meta, .book-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
  }
  .post-desc, .book-notes, .post-teaser {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.85rem;
    line-height: 1.35;
    margin-top: 0.15rem;
    margin-bottom: 0;
    color: var(--text-muted);
  }
  .post-detail {
    display: none;
  }
}

/* Phone Landscape Mode (Strictly One Line Header) */
@media (orientation: landscape) and (max-height: 500px) {
  body {
    padding: 0.65rem 1.25rem 1.25rem;
  }
  header.site-header {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin-bottom: 0.65rem !important;
    padding-bottom: 0.4rem !important;
    border-bottom: 3px solid var(--border-header) !important;
  }
  .site-branding {
    display: flex !important;
    align-items: center !important;
    margin: 0 !important;
    flex-shrink: 0 !important;
  }
  .site-title {
    font-size: 1.05rem !important;
    white-space: nowrap !important;
    margin: 0 !important;
  }
  .site-tagline {
    display: none !important;
  }
  .site-nav-row {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 0.65rem !important;
    flex-wrap: nowrap !important;
    margin: 0 !important;
  }
  .mobile-nav-dropdown,
  body:has(#contrast-toggle:checked) .mobile-nav-dropdown {
    display: none !important;
  }
  nav.desktop-nav,
  body:has(#contrast-toggle:checked) nav.desktop-nav {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 0.55rem !important;
    font-size: 0.82rem !important;
    flex-wrap: nowrap !important;
    margin: 0 !important;
  }
  nav.desktop-nav a {
    min-height: 24px !important;
    padding: 0.1rem 0.2rem !important;
    white-space: nowrap !important;
  }
  .site-controls {
    display: inline-flex !important;
    align-items: center !important;
    margin-left: 0.4rem !important;
    gap: 1px !important;
    background-color: var(--bg-subtle) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 6px !important;
    padding: 1px !important;
    flex-shrink: 0 !important;
  }
  .control-btn {
    width: 24px !important;
    height: 24px !important;
    min-width: 24px !important;
    min-height: 24px !important;
    border: none !important;
  }
  .control-btn svg {
    width: 13px !important;
    height: 13px !important;
  }

  /* Compact Content & Headings in Landscape */
  h1, .post-title-full {
    font-size: 1.3rem;
    line-height: 1.25;
    margin-bottom: 0.35rem;
  }
  h2 {
    font-size: 1.15rem;
    margin-top: 1rem;
    margin-bottom: 0.3rem;
  }
  .page-intro {
    margin-bottom: 0.75rem;
    padding-bottom: 0.4rem;
  }
  .post-desc, .book-notes, .post-teaser {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.84rem;
    line-height: 1.35;
  }
}

/* Header & Navigation */
header.site-header {
  margin-bottom: 1.5rem;
  padding-bottom: 0.45rem;
  border-bottom: 4px solid var(--border-header);
}

.site-branding {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.site-title {
  font-family: var(--font-sans);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.2;
}

.site-title a {
  color: var(--text);
  text-decoration: none;
}

.site-title a:hover {
  color: var(--link);
}

.site-tagline {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.2;
  text-align: right;
  margin-left: auto;
}

.site-tagline a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-tagline a:hover {
  color: var(--link);
  text-decoration: underline;
}

.site-nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

/* Display & Accessibility Mode Switchers (Zero-JS) */
.site-controls {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1px;
  flex-shrink: 0;
  margin-left: auto;
}

.control-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 25px;
  height: 25px;
  min-width: 25px;
  min-height: 25px;
  padding: 0;
  border-radius: 4px;
  border: none;
  background-color: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
  user-select: none;
}

.control-btn:hover {
  color: var(--link);
  background-color: var(--bg-card);
}

.control-icon {
  display: block;
}

/* Sun / Moon visibility state */
.control-icon.icon-sun {
  display: none;
}
.control-icon.icon-moon {
  display: block;
}

body:has(#theme-toggle:checked) .control-icon.icon-sun {
  display: block;
}
body:has(#theme-toggle:checked) .control-icon.icon-moon {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .control-icon.icon-sun {
    display: block;
  }
  .control-icon.icon-moon {
    display: none;
  }

  body:has(#theme-toggle:checked) .control-icon.icon-sun {
    display: none;
  }
  body:has(#theme-toggle:checked) .control-icon.icon-moon {
    display: block;
  }
}

/* Active pressed button state indicators */
body:has(#theme-toggle:checked) label[for="theme-toggle"],
body:has(#contrast-toggle:checked) label[for="contrast-toggle"],
body:has(#text-size-toggle:checked) label[for="text-size-toggle"] {
  background-color: var(--tag-bg);
  border-color: var(--link);
  color: var(--link);
}

/* Keyboard focus indicators for toggles */
body:has(#theme-toggle:focus-visible) label[for="theme-toggle"],
body:has(#contrast-toggle:focus-visible) label[for="contrast-toggle"],
body:has(#text-size-toggle:focus-visible) label[for="text-size-toggle"] {
  outline: 3px solid var(--link);
  outline-offset: 2px;
}

nav.site-nav {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  align-items: center;
  margin-left: -0.25rem;
}

nav.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.25rem;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 5px;
  border-bottom: none;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

nav.site-nav a:hover {
  color: var(--link);
  background-color: var(--bg-subtle);
  border-color: var(--border-subtle);
}

nav.site-nav a[aria-current="page"],
nav.site-nav a.active {
  color: var(--text) !important;
  background-color: var(--bg-subtle) !important;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-weight: 600;
  padding: 0.2rem 0.25rem;
  border-bottom: none;
}

/* Mobile Dynamic Dropdown Navigation (Zero-JS) */
.mobile-nav-dropdown {
  display: none;
  position: relative;
}

.mobile-nav-summary {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.55rem;
  font-size: 0.84rem;
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  list-style: none;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.mobile-nav-summary::-webkit-details-marker {
  display: none;
}
.mobile-nav-summary::marker {
  display: none;
}

.mobile-nav-summary:hover,
.mobile-nav-summary:focus-visible,
.mobile-nav-dropdown[open] .mobile-nav-summary {
  background: var(--bg-card);
  border-color: var(--link);
  color: var(--link);
  outline: none;
}

.mobile-nav-chevron {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.mobile-nav-dropdown[open] .mobile-nav-chevron {
  transform: rotate(180deg);
}

.mobile-nav-menu {
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  min-width: 165px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
  padding: 0.35rem 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.mobile-nav-menu a {
  display: flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  min-height: 38px;
  border-radius: 4px;
  border-left: 3px solid transparent;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.mobile-nav-menu a:hover,
.mobile-nav-menu a:focus-visible {
  background-color: var(--bg-subtle);
  color: var(--link);
  outline: none;
}

.mobile-nav-menu a[aria-current="page"],
.mobile-nav-menu a.active {
  color: var(--bg) !important;
  font-weight: 600;
  background-color: var(--text) !important;
  border-left-color: transparent;
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.25;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.015em;
}

h1 {
  font-size: 2rem;
  margin-top: 0;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.4rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-top: 2.25rem;
}

h3 {
  font-size: 1.15rem;
  margin-top: 1.75rem;
}

p {
  margin-top: 0;
  margin-bottom: 1.4rem;
}

/* Links */
a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--link-hover);
}

/* Lists */
ul, ol {
  margin-top: 0;
  margin-bottom: 1.4rem;
  padding-left: 1.4rem;
}

li {
  margin-bottom: 0.35rem;
}

/* Blockquotes */
blockquote {
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--border);
  background-color: var(--bg-subtle);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  color: var(--text);
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Code & Preformatted */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 3px;
}

pre {
  background-color: var(--code-bg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 1rem 1.25rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.5;
  border: 1px solid var(--border);
}

pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* Horizontal Rule */
hr {
  border: 0;
  height: 1px;
  background-color: var(--border);
  margin: 2.5rem 0;
}

/* Metadata & Details */
.meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

/* Streams & Category Links (Simple Text Links, No Pills) */
.stream-nav, .lane-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  margin: 1.5rem 0 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.stream-link, .post-category, .lane-link, .post-lane {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--link);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}

.stream-link:hover, .post-category:hover, .lane-link:hover, .post-lane:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.stream-link.active, .lane-link.active {
  color: var(--text);
  font-weight: 700;
  text-decoration: underline;
}

/* Provenance Category Badges & Icons ("On the downlow") */
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-muted);
  vertical-align: middle;
  transition: color 0.15s ease;
}

.category-icon {
  display: inline-block;
  vertical-align: -1px;
  stroke: currentColor;
  opacity: 0.75;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.category-badge:hover .category-icon {
  opacity: 1;
}

.category-label {
  font-weight: 500;
  color: var(--text-muted);
}

/* Prose Reading Measure */
article p, .page-intro p, .post-desc, .book-notes {
  max-width: 76ch;
}

/* Multi-Column Magazine Layouts */
.desktop-two-col {
  display: block;
}

@media (min-width: 960px), (min-width: 720px) and (orientation: landscape) {
  .desktop-two-col {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

@media (min-width: 1360px) {
  .desktop-two-col {
    grid-template-columns: 1.3fr 1fr;
    gap: 4.5rem;
  }
}

.desktop-two-col section h2 {
  margin-top: 1.15rem;
}

.desktop-two-col section:first-child h2 {
  margin-top: 0.25rem;
}

/* Links Page 2-Row / 2-Column Responsive Layout */
.links-intro-row {
  display: block;
  margin-bottom: 2rem;
}

.links-intro-col {
  min-width: 0;
}

.links-intro-col .page-intro {
  margin-bottom: 0;
}

.links-sidebar-meta {
  min-width: 0;
}

.links-grid-row {
  display: block;
}

.links-col {
  min-width: 0;
}

@media (min-width: 960px), (min-width: 720px) and (orientation: landscape) {
  .links-intro-row {
    display: grid;
    grid-template-columns: 2.3fr 1fr; /* 70% / 30% */
    gap: 3rem;
    align-items: start;
    margin-bottom: 2.25rem;
    padding-bottom: 1.75rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .links-grid-row {
    display: grid;
    grid-template-columns: 1fr 1fr; /* 50% / 50% */
    gap: 3.5rem;
    align-items: start;
  }
}

@media (min-width: 1360px) {
  .links-intro-row {
    grid-template-columns: 2.4fr 1fr;
    gap: 4.5rem;
  }

  .links-grid-row {
    gap: 4.5rem;
  }
}

/* Links Meta & Keywords Card */
.links-meta-card {
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-card);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
}

.links-meta-section {
  margin-bottom: 0.75rem;
}

.links-meta-section:last-child {
  margin-bottom: 0;
}

.links-meta-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.links-meta-val {
  color: var(--text);
  font-weight: 500;
  line-height: 1.4;
}

.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.keyword-tag {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  color: var(--text-muted);
  background-color: var(--tag-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  text-decoration: none;
  line-height: 1.2;
}

.keyword-tag:hover {
  color: var(--link);
  border-color: var(--link);
}

/* Post Listings & Adaptive Density */
.post-list, .book-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-item, .book-item {
  margin-bottom: 1.35rem;
}

.post-item.featured {
  padding-bottom: 1.15rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.post-header-row,
.book-header-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
  width: 100%;
}

.post-header-left,
.book-header-left {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 0;
  flex: 1 1 auto;
}

.post-header-left .category-badge,
.book-header-left .category-badge {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  vertical-align: middle;
  position: relative;
  top: 1px;
}

.post-header-left .post-title,
.post-header .post-title,
.book-header-left .book-title,
.book-header .book-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.3;
}

.post-item.featured .post-header-left .post-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.post-header-right,
.book-header-right {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-left: auto;
  text-align: right;
  white-space: nowrap;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.post-header-right .post-type,
.book-header-right .book-author {
  font-family: var(--font-sans);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}

.post-header-right time,
.book-header-right time {
  font-family: var(--font-sans);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}

.header-all-link {
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-sans);
  margin-left: 0.4rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.header-all-link a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.header-all-link a:hover {
  color: var(--link-hover);
}

.about-arrow {
  display: inline-block;
  color: var(--link);
  text-decoration: none;
  font-weight: 600;
  margin-left: 0.25rem;
}

.about-arrow:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

/* Post Detail Header & Inline Back Navigation */
.post-header-full {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.post-header-full .post-header-row {
  margin-bottom: 0;
  align-items: baseline;
}

.post-header-full .post-header-left {
  align-items: baseline;
  gap: 0.5rem;
}

.post-header-full .post-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.3;
}

.post-back-arrow {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding-right: 0.25rem;
  transition: transform 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.post-back-arrow:hover {
  transform: translateX(-3px);
  color: var(--accent-hover);
  text-decoration: none;
}

@media (max-width: 640px) {
  .post-header-full .post-header-row {
    flex-wrap: wrap;
    gap: 0.35rem;
  }
  .post-header-full .post-title {
    font-size: 1.05rem;
  }
}

/* Development Prompts & Instruction Timeline */
.milestone-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
}

.milestone-title {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.35;
}

.milestone-title a {
  color: var(--text);
  text-decoration: none;
}

.milestone-title a:hover {
  color: var(--link);
  text-decoration: underline;
}

.milestone-date {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.prompt-entry {
  margin-bottom: 0.75rem;
}

.prompt-speaker {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text);
  margin-top: 0.85rem;
  margin-bottom: 0.45rem;
}

.prompt-speaker strong {
  font-weight: 600;
}

.prompt-quotes {
  margin-left: 0.15rem;
  margin-bottom: 0.85rem;
}

.prompt-quotes p {
  margin-top: 0;
  margin-bottom: 0.65rem;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text);
}

.prompt-quotes p:last-child {
  margin-bottom: 0;
}

/* Edge-to-Edge Response Block */
.prompt-response-block {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.15rem 0 1.25rem;
  margin-top: 0.85rem;
  margin-bottom: 2.25rem;
}

.prompt-response-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (min-width: 1360px) {
  .prompt-response-inner {
    padding: 0 3rem;
  }
}

@media (max-width: 1024px) {
  .prompt-response-inner {
    padding: 0 1.75rem;
  }
}

@media (max-width: 768px) {
  .prompt-response-inner {
    padding: 0 1rem;
  }
}

.response-speaker {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.response-speaker strong {
  font-weight: 600;
}

.response-actions {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text);
}

.response-actions li {
  margin-bottom: 0.35rem;
}

.response-actions li:last-child {
  margin-bottom: 0;
}

/* Framed App Screenshot */
figure.screenshot-frame {
  max-width: 640px;
  margin: 1.5rem auto 2rem;
  text-align: center;
}

figure.screenshot-frame .screenshot-container {
  display: inline-block;
  border: 2px solid var(--accent);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
  background: var(--bg-card);
  line-height: 0;
  max-width: 100%;
  transition: border-color 0.15s ease;
}

figure.screenshot-frame .screenshot-container:hover {
  border-color: var(--accent-hover);
}

figure.screenshot-frame img {
  display: block;
  width: 100%;
  height: auto;
  border: none;
  border-radius: 0;
}

figure.screenshot-frame figcaption {
  margin-top: 0.65rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Photo Links for Fullscreen Viewing */
a.photo-link {
  display: block;
  cursor: zoom-in;
  text-decoration: none;
}

a.photo-link img {
  transition: opacity 0.15s ease;
}

a.photo-link:hover img {
  opacity: 0.94;
}

.post-item.featured .post-desc {
  font-size: 0.95rem;
}

.post-header, .book-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.post-title, .book-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.3;
  overflow-wrap: break-word;
}

.post-title a, .book-title, .book-title a {
  color: var(--link);
  text-decoration: none;
}

.post-title a:hover, .book-title a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.post-meta, .book-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.post-meta time, .book-meta time {
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.post-type {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}

.post-type-evolution {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: normal;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  margin-left: 0.25rem;
}

.prev-type {
  font-weight: 600;
}

.post-desc, .book-notes {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}

.post-teaser {
  display: block;
}

.post-detail {
  display: block;
  margin-top: 0.5rem;
}

/* Density Adaptations for Small Screens / Mobile */
@media (max-width: 640px) {
  .post-item {
    margin-bottom: 1.75rem;
  }
  .post-title, .book-title {
    font-size: 1.02rem;
  }
  .post-detail {
    display: none; /* Keep phone feeds concise and easily scannable */
  }
  .post-meta, .book-meta {
    font-size: 0.76rem;
    gap: 0.4rem;
  }
}

/* Page Intro Block */
.page-intro {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 2rem;
}

/* Lanes List & Cards */
.lanes-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

@media (min-width: 1024px) {
  .lanes-list.grid-view {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

.lane-entry {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.lane-entry:last-child {
  border-bottom: none;
}

.lane-entry h3 {
  margin-top: 0;
  margin-bottom: 0.35rem;
  font-size: 1.15rem;
}

/* Editorial Figures & Imagery */
figure {
  margin: 2.25rem 0;
  max-width: 100%;
}

figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  border: 1px solid var(--border-subtle);
}

figcaption {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--text-muted);
  margin-top: 0.6rem;
  text-align: left;
}

/* MacWright-Style Photo Stream & Adaptive Grid */
.photo-stream {
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
  margin: 2rem 0;
}

.photo-stream.gallery-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .photo-stream.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
}

.photo-stream figure {
  margin: 0;
}

.photo-stream img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  border: 1px solid var(--border-subtle);
}

@media (orientation: portrait) {
  .photo-stream img {
    max-height: 72vh;
    object-fit: cover;
  }
}

.photo-stream figcaption {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  text-align: left;
}

/* Edge-to-Edge Photo Stream: Remove Left/Right Gutters on Portable Viewports */
@media (max-width: 1024px) {
  .photo-stream {
    margin-left: -1.75rem;
    margin-right: -1.75rem;
    width: calc(100% + 3.5rem);
  }
  .photo-stream img {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .photo-stream figcaption {
    padding-left: 1.75rem;
    padding-right: 1.75rem;
  }
}

@media (max-width: 640px) {
  .photo-stream {
    margin-left: -1rem;
    margin-right: -1rem;
    width: calc(100% + 2rem);
  }
  .photo-stream figcaption {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* Callout / Aside */
.callout {
  background-color: var(--bg-subtle);
  border-left: 3px solid var(--link);
  padding: 1rem 1.25rem;
  border-radius: 0 6px 6px 0;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.callout p:last-child {
  margin-bottom: 0;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: var(--font-sans);
  font-size: 0.88rem;
}

th, td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  color: var(--text);
}

/* Footer */
footer.site-footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-categories, .footer-lanes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-categories-title, .footer-lanes-title {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.78rem;
  color: var(--text);
  margin-right: 0.25rem;
}

.footer-categories a, .footer-lanes a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.15rem 0.2rem;
}

.footer-categories a:hover, .footer-lanes a:hover {
  color: var(--link);
  text-decoration: underline;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.25rem 0.25rem;
}

.footer-nav a:hover {
  color: var(--link);
  text-decoration: underline;
}

/* Back navigation */
.back-nav {
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.back-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.25rem 0.25rem;
}

/* Lane filter navigation (Archives & Category pages) */
.lane-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.6rem;
  margin: 1.25rem 0 2rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.lane-link {
  color: var(--link);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.25rem 0.45rem;
  border-radius: 3px;
  border-bottom: 2px solid transparent;
}

.lane-link:hover {
  text-decoration: underline;
}

.lane-link.active,
.lane-link[aria-current="page"] {
  font-weight: 700;
  color: var(--text);
  border-bottom-color: var(--link);
}

.post-lane {
  color: var(--link);
  text-decoration: none;
  font-weight: 500;
}

.post-lane:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Accessibility Media Queries
   ========================================================================== */

/* High Contrast Mode — Light (WCAG 2.1 AAA: 7:1+ contrast) */
@media (prefers-contrast: more) {
  :root {
    --bg: #ffffff;
    --bg-card: #ffffff;
    --bg-subtle: #f0ede6;
    --text: #000000;
    --text-muted: #1a1a1a;
    --border: #000000;
    --border-subtle: #333333;
    --link: #702600;
    --link-hover: #3d1400;
    --tag-bg: #e6e0d4;
    --tag-text: #000000;
    --code-bg: #e8e3d8;
  }

  a {
    text-decoration: underline;
  }

  :focus-visible {
    outline: 3px solid #000000;
    outline-offset: 3px;
  }

  .skip-link {
    background: #000000;
    color: #ffffff;
  }

  header.site-header,
  footer.site-footer,
  th, td, hr,
  .post-item {
    border-color: #000000;
  }
}

/* High Contrast Mode — Dark (WCAG 2.1 AAA: 7:1+ contrast) */
@media (prefers-color-scheme: dark) and (prefers-contrast: more) {
  :root {
    --bg: #000000;
    --bg-card: #080808;
    --bg-subtle: #141414;
    --text: #ffffff;
    --text-muted: #e6e6e6;
    --border: #ffffff;
    --border-subtle: #cccccc;
    --link: #ffb070;
    --link-hover: #ffd4a8;
    --tag-bg: #1c1f21;
    --tag-text: #ffffff;
    --code-bg: #181a1b;
  }

  a {
    text-decoration: underline;
  }

  :focus-visible {
    outline: 3px solid #ffffff;
    outline-offset: 3px;
  }

  .skip-link {
    background: #ffffff;
    color: #000000;
  }

  header.site-header,
  footer.site-footer,
  th, td, hr,
  .post-item {
    border-color: #ffffff;
  }
}

/* Windows Forced Colors (High Contrast) Mode */
@media (forced-colors: active) {
  :focus-visible {
    outline: 3px solid Highlight;
    outline-offset: 3px;
  }

  .skip-link {
    background: CanvasText;
    color: Canvas;
  }

  nav.site-nav a[aria-current="page"],
  .lane-link[aria-current="page"] {
    border-bottom: 3px solid Highlight;
  }
}

/* Reduced Motion Mode (Vestibular Disorder Support) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .skip-link {
    transition: none !important;
  }
}

/* ==========================================================================
   Manual Accessibility Toggle Triggers (Zero-JS CSS :has)
   ========================================================================== */

/* ==========================================================================
   1. Manual High-Contrast + Low-Complexity Assistive Mode (:has(#contrast-toggle:checked))
   Designed for maximum readability, cognitive clarity, and low visual noise:
   - 21:1 stark contrast
   - Plain big readable serial text
   - No multi-column tabs or complex grids
   - Fewer lines (removes decorative borders, cards, shadows)
   - No graphics (hides non-essential images, reveals descriptive text)
   - Explicit data labels for text/assistive readers
   ========================================================================== */

/* High-Contrast Light Mode */
body:has(#contrast-toggle:checked) {
  --bg: #ffffff !important;
  --bg-card: #ffffff !important;
  --bg-subtle: #ffffff !important;
  --text: #000000 !important;
  --text-muted: #1a1a1a !important;
  --border: #000000 !important;
  --border-subtle: #000000 !important;
  --link: #0000bb !important;
  --link-hover: #000066 !important;
  --tag-bg: #ffffff !important;
  --tag-text: #000000 !important;
  --code-bg: #f4f4f4 !important;

  /* Crisp, high-legibility system typography */
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif !important;
  font-size: 1.25rem !important;
  line-height: 1.55 !important;
  font-weight: 500 !important;
  letter-spacing: 0.01em !important;
  background-color: var(--bg) !important;
  color: var(--text) !important;
}

body:has(#contrast-toggle:checked) p,
body:has(#contrast-toggle:checked) li,
body:has(#contrast-toggle:checked) blockquote {
  font-size: 1.25rem !important;
  line-height: 1.55 !important;
  margin-bottom: 1.15rem !important;
}

body:has(#contrast-toggle:checked) a {
  text-decoration: underline 3px !important;
  text-underline-offset: 4px !important;
  font-weight: 700 !important;
}

body:has(#contrast-toggle:checked) a:focus-visible,
body:has(#contrast-toggle:checked) button:focus-visible,
body:has(#contrast-toggle:checked) input:focus-visible,
body:has(#contrast-toggle:checked) label:focus-visible {
  outline: 4px solid var(--text) !important;
  outline-offset: 4px !important;
}

body:has(#contrast-toggle:checked) h1,
body:has(#contrast-toggle:checked) h2,
body:has(#contrast-toggle:checked) h3,
body:has(#contrast-toggle:checked) h4,
body:has(#contrast-toggle:checked) .site-title,
body:has(#contrast-toggle:checked) .post-title,
body:has(#contrast-toggle:checked) .book-title {
  font-weight: 800 !important;
  color: var(--text) !important;
}

/* High-Contrast Dark Mode */
body:has(#theme-toggle:checked):has(#contrast-toggle:checked) {
  --bg: #000000 !important;
  --bg-card: #000000 !important;
  --bg-subtle: #000000 !important;
  --text: #ffffff !important;
  --text-muted: #f0f0f0 !important;
  --border: #ffffff !important;
  --border-subtle: #ffffff !important;
  --link: #ffff33 !important;
  --link-hover: #ffffff !important;
  --tag-bg: #000000 !important;
  --tag-text: #ffffff !important;
  --code-bg: #141414 !important;
  background-color: #000000 !important;
  color: #ffffff !important;
}

@media (prefers-color-scheme: dark) {
  body:not(:has(#theme-toggle:checked)):has(#contrast-toggle:checked) {
    --bg: #000000 !important;
    --bg-card: #000000 !important;
    --bg-subtle: #000000 !important;
    --text: #ffffff !important;
    --text-muted: #f0f0f0 !important;
    --border: #ffffff !important;
    --border-subtle: #ffffff !important;
    --link: #ffff33 !important;
    --link-hover: #ffffff !important;
    --tag-bg: #000000 !important;
    --tag-text: #ffffff !important;
    --code-bg: #141414 !important;
    background-color: #000000 !important;
    color: #ffffff !important;
  }

  body:has(#theme-toggle:checked):has(#contrast-toggle:checked) {
    --bg: #ffffff !important;
    --bg-card: #ffffff !important;
    --bg-subtle: #ffffff !important;
    --text: #000000 !important;
    --text-muted: #1a1a1a !important;
    --border: #000000 !important;
    --border-subtle: #000000 !important;
    --link: #0000bb !important;
    --link-hover: #000066 !important;
    --tag-bg: #ffffff !important;
    --tag-text: #000000 !important;
    --code-bg: #f4f4f4 !important;
    background-color: #ffffff !important;
    color: #000000 !important;
  }
}

/* Low Complexity: Fewer Lines (Strip decorative boxes, borders, and shadows) */
body:has(#contrast-toggle:checked) .dashboard-card,
body:has(#contrast-toggle:checked) .timeline-container,
body:has(#contrast-toggle:checked) .timeline-milestone,
body:has(#contrast-toggle:checked) .timeline-container div,
body:has(#contrast-toggle:checked) .timeline-milestone div,
body:has(#contrast-toggle:checked) .exhibit-card,
body:has(#contrast-toggle:checked) .app-card,
body:has(#contrast-toggle:checked) .book-card,
body:has(#contrast-toggle:checked) .book-item,
body:has(#contrast-toggle:checked) .post-item,
body:has(#contrast-toggle:checked) blockquote,
body:has(#contrast-toggle:checked) figure,
body:has(#contrast-toggle:checked) .photo-preview-row figure {
  border: none !important;
  border-left: none !important;
  box-shadow: none !important;
  background: transparent !important;
  border-radius: 0 !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

body:has(#contrast-toggle:checked) header.site-header {
  border-bottom: 2px solid var(--border) !important;
}

body:has(#contrast-toggle:checked) footer.site-footer {
  border-top: 2px solid var(--border) !important;
}

body:has(#contrast-toggle:checked) hr {
  border: none !important;
  border-top: 2px solid var(--border) !important;
  margin: 2.5rem 0 !important;
}

/* Low Complexity: No Graphics (Hide photos and decorative visual media) */
body:has(#contrast-toggle:checked) img:not(.mode-toggle-input),
body:has(#contrast-toggle:checked) picture,
body:has(#contrast-toggle:checked) .photo-stream img,
body:has(#contrast-toggle:checked) .photo-preview-row img,
body:has(#contrast-toggle:checked) .book-cover,
body:has(#contrast-toggle:checked) .gallery-grid img {
  display: none !important;
}

/* Preserve figcaption as high-clarity descriptive assistive text */
body:has(#contrast-toggle:checked) figcaption {
  display: block !important;
  font-size: 1.15rem !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  margin: 1rem 0 !important;
  padding: 0.5rem 0.75rem !important;
  border-left: 4px solid var(--border) !important;
  background: var(--bg-subtle) !important;
}

body:has(#contrast-toggle:checked) figcaption::before {
  content: "[Visual Content Description: " !important;
  font-weight: 800 !important;
}

body:has(#contrast-toggle:checked) figcaption::after {
  content: "]" !important;
  font-weight: 800 !important;
}

/* High Contrast: 2-Line Header Navigation (Horizontal, No Extra Line Feeds) */
body:has(#contrast-toggle:checked) .site-header {
  border-bottom: 2px solid var(--border) !important;
  padding-bottom: 0.75rem !important;
}

body:has(#contrast-toggle:checked) .site-branding {
  display: flex !important;
  justify-content: space-between !important;
  align-items: baseline !important;
  margin-bottom: 0.5rem !important;
}

body:has(#contrast-toggle:checked) .site-nav-row {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  flex-wrap: wrap !important;
  gap: 0.5rem 1rem !important;
}

@media (min-width: 641px), (orientation: landscape) and (max-height: 500px) {
  body:has(#contrast-toggle:checked) nav.site-nav {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    align-items: center !important;
    gap: 0.25rem 1.15rem !important;
    margin: 0 !important;
    border: none !important;
  }
}

@media (max-width: 640px) {
  body:has(#contrast-toggle:checked) nav.desktop-nav {
    display: none !important;
  }
  body:has(#contrast-toggle:checked) .mobile-nav-dropdown {
    display: inline-flex !important;
  }
  body:has(#contrast-toggle:checked) .mobile-nav-summary {
    border: 2px solid var(--border) !important;
    font-weight: 800 !important;
  }
  body:has(#contrast-toggle:checked) .mobile-nav-menu {
    border: 2px solid var(--border) !important;
    background: var(--bg) !important;
    box-shadow: none !important;
  }
  body:has(#contrast-toggle:checked) .mobile-nav-menu a {
    font-weight: 700 !important;
    text-decoration: underline 2px !important;
    text-underline-offset: 3px !important;
  }
  body:has(#contrast-toggle:checked) .mobile-nav-menu a.active,
  body:has(#contrast-toggle:checked) .mobile-nav-menu a[aria-current="page"] {
    font-weight: 800 !important;
    text-decoration: underline 4px !important;
  }
}

body:has(#contrast-toggle:checked) nav.site-nav a {
  display: inline-block !important;
  font-size: 1.15rem !important;
  font-weight: 700 !important;
  padding: 0.2rem 0 !important;
  text-decoration: underline 2px !important;
  text-underline-offset: 3px !important;
  border-bottom: none !important;
}

body:has(#contrast-toggle:checked) nav.site-nav a.active,
body:has(#contrast-toggle:checked) nav.site-nav a[aria-current="page"] {
  text-decoration: underline 4px !important;
  text-underline-offset: 4px !important;
  font-weight: 800 !important;
}

body:has(#contrast-toggle:checked) .site-controls {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
  margin-left: auto !important;
}

body:has(#contrast-toggle:checked) nav.footer-nav {
  display: flex !important;
  flex-direction: row !important;
  flex-wrap: wrap !important;
  align-items: center !important;
  gap: 1.25rem !important;
  margin: 1rem 0 !important;
  border: none !important;
}

body:has(#contrast-toggle:checked) nav.footer-nav a {
  display: inline-block !important;
  font-size: 1.15rem !important;
  font-weight: 700 !important;
  text-decoration: underline 2px !important;
  text-underline-offset: 3px !important;
}

/* Flatten complex multi-column grids into single-column serial text */
body:has(#contrast-toggle:checked) .desktop-two-col,
body:has(#contrast-toggle:checked) .dashboard-grid,
body:has(#contrast-toggle:checked) .photo-preview-row,
body:has(#contrast-toggle:checked) .gallery-grid {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
}

body:has(#contrast-toggle:checked) .main-column,
body:has(#contrast-toggle:checked) .sidebar-column {
  width: 100% !important;
  max-width: 100% !important;
  margin-bottom: 2.5rem !important;
}

body:has(#contrast-toggle:checked) .dashboard-card {
  display: block !important;
  margin-bottom: 1.75rem !important;
  padding: 0.75rem 0 !important;
  border-bottom: 1px solid var(--border) !important;
}

body:has(#contrast-toggle:checked) .post-teaser,
body:has(#contrast-toggle:checked) .post-detail {
  display: block !important;
  font-size: 1.15rem !important;
  line-height: 1.55 !important;
  margin-bottom: 0.75rem !important;
}

/* Low Complexity: Explicit Data Labels for Text Readers */
body:has(#contrast-toggle:checked) time::before,
body:has(#contrast-toggle:checked) .post-date::before {
  content: "Date: " !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
}

body:has(#contrast-toggle:checked) .post-lane::before,
body:has(#contrast-toggle:checked) .lane-link::before {
  content: "Category: " !important;
  font-weight: 700 !important;
}

body:has(#contrast-toggle:checked) .book-meta span:first-child::before {
  content: "Author: " !important;
  font-weight: 700 !important;
}

body:has(#contrast-toggle:checked) .book-meta time::before {
  content: "Read: " !important;
  font-weight: 700 !important;
}

body:has(#contrast-toggle:checked) a[target="_blank"]::after {
  content: " (Opens External Link)" !important;
  font-size: 0.85em !important;
  font-weight: 600 !important;
}

/* Reveal Screen Reader context visually for editorial content, but keep button labels inside controls clean */
body:has(#contrast-toggle:checked) .sr-only:not(.mode-toggle-input):not(.control-btn .sr-only) {
  position: static !important;
  width: auto !important;
  height: auto !important;
  clip: auto !important;
  overflow: visible !important;
  display: inline !important;
  font-weight: 600 !important;
}

body:has(#contrast-toggle:checked) .control-btn .sr-only {
  display: none !important;
}

body:has(#contrast-toggle:checked) .control-btn {
  border: 2px solid var(--border) !important;
  position: relative !important;
}


/* ==========================================================================
   2. Manual Text Size Scaling Toggle (:has(#text-size-toggle:checked))
   Obvious, significant enlargement across typography, line heights, and margins
   ========================================================================== */

body:has(#text-size-toggle:checked) {
  font-size: 1.65rem !important;
  line-height: 2.0 !important;
}

body:has(#text-size-toggle:checked) .container {
  max-width: 1200px !important;
  padding-left: 2rem !important;
  padding-right: 2rem !important;
}

body:has(#text-size-toggle:checked) p,
body:has(#text-size-toggle:checked) li,
body:has(#text-size-toggle:checked) blockquote {
  font-size: 1.65rem !important;
  line-height: 2.0 !important;
  margin-bottom: 1.75rem !important;
}

body:has(#text-size-toggle:checked) .site-title {
  font-size: 2.4rem !important;
}

body:has(#text-size-toggle:checked) .site-tagline {
  font-size: 1.65rem !important;
  margin-top: 0.35rem !important;
}

body:has(#text-size-toggle:checked) h1 {
  font-size: 2.85rem !important;
  line-height: 1.25 !important;
  margin-bottom: 1.75rem !important;
}

body:has(#text-size-toggle:checked) h2 {
  font-size: 2.3rem !important;
  line-height: 1.3 !important;
  margin-top: 2.5rem !important;
  margin-bottom: 1.5rem !important;
}

body:has(#text-size-toggle:checked) h3 {
  font-size: 1.9rem !important;
  line-height: 1.35 !important;
}

body:has(#text-size-toggle:checked) .post-title,
body:has(#text-size-toggle:checked) .book-title {
  font-size: 2.05rem !important;
  line-height: 1.3 !important;
}

body:has(#text-size-toggle:checked) .post-item {
  margin-bottom: 3.5rem !important;
  padding-bottom: 2rem !important;
}

body:has(#text-size-toggle:checked) .post-date,
body:has(#text-size-toggle:checked) .post-meta,
body:has(#text-size-toggle:checked) .book-meta,
body:has(#text-size-toggle:checked) .meta,
body:has(#text-size-toggle:checked) time {
  font-size: 1.25rem !important;
  line-height: 1.6 !important;
}

body:has(#text-size-toggle:checked) nav.site-nav a,
body:has(#text-size-toggle:checked) nav.footer-nav a {
  font-size: 1.35rem !important;
  min-height: 48px !important;
  padding: 0.5rem 0.8rem !important;
}

body:has(#text-size-toggle:checked) .site-controls {
  gap: 0.75rem !important;
}

body:has(#text-size-toggle:checked) .control-btn {
  width: 44px !important;
  height: 44px !important;
}

body:has(#text-size-toggle:checked) .control-icon {
  width: 22px !important;
  height: 22px !important;
}

body:has(#text-size-toggle:checked) .app-launch-btn,
body:has(#text-size-toggle:checked) .app-data-btn {
  font-size: 1.25rem !important;
  padding: 0.75rem 1.5rem !important;
}

body:has(#text-size-toggle:checked) code,
body:has(#text-size-toggle:checked) pre {
  font-size: 1.35rem !important;
  line-height: 1.7 !important;
}

/* ==========================================================================
   3. Both Toggles Active: High-Contrast + Low Complexity with Extra-Large Text
   ========================================================================== */

body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) {
  font-size: 1.65rem !important;
  line-height: 1.7 !important;
}

body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) p,
body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) li,
body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) blockquote {
  font-size: 1.65rem !important;
  line-height: 1.7 !important;
}

body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) nav.site-nav a,
body:has(#contrast-toggle:checked):has(#text-size-toggle:checked) nav.footer-nav a {
  font-size: 1.45rem !important;
  padding: 0.5rem 0 !important;
}