/* Production document stylesheet.
   Knowledge website: reading-first, fluid, accessible. No frameworks. */

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #fafafa;
  --color-text: #111111;
  --color-text-muted: #555555;
  --color-border: #dddddd;
  --color-link: #0000ee;
  --color-link-visited: #551a8b;
  --color-focus: #0b57d0;
  --color-chrome-bg: rgba(255, 255, 255, 0.92);
  --color-chrome-border: #dddddd;
  --color-button-bg: #111111;
  --color-button-text: #ffffff;

  --font-body: Georgia, "Times New Roman", Times, serif;
  --font-mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* Fluid type: small, readable */
  --text-body: clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
  --text-small: clamp(0.8rem, 0.75rem + 0.2vw, 0.9rem);
  --text-h1: clamp(1.35rem, 1.2rem + 0.6vw, 1.65rem);
  --text-h2: clamp(1.1rem, 1.05rem + 0.3vw, 1.3rem);
  --text-h3: clamp(1rem, 0.98rem + 0.15vw, 1.12rem);

  --line-body: 1.7;
  --line-heading: 1.3;

  /* Reading measure for inner pages; home is full-bleed with page padding */
  --measure: min(48rem, 100%);
  --page-pad-x: clamp(0.85rem, 2vw, 2rem);
  --page-pad-y: clamp(0.85rem, 2vw, 1.5rem);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.85rem;
  --space-4: 1.25rem;
  --space-5: 1.75rem;
  --space-6: 2.5rem;

  --tap-min: 2.75rem;
}

/* Black-and-white dark theme (ink inverted) */
html[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #111111;
  --color-bg-subtle: #1a1a1a;
  --color-text: #f2f2f2;
  --color-text-muted: #a8a8a8;
  --color-border: #333333;
  --color-link: #ffffff;
  --color-link-visited: #d0d0d0;
  --color-focus: #ffffff;
  --color-chrome-bg: rgba(17, 17, 17, 0.92);
  --color-chrome-border: #333333;
  --color-button-bg: #f2f2f2;
  --color-button-text: #111111;
}

html[data-theme="dark"] pre,
html[data-theme="dark"] code,
html[data-theme="dark"] kbd,
html[data-theme="dark"] samp {
  background: var(--color-bg-subtle);
}

html[data-theme="dark"] .draft-banner {
  border-color: #666666;
  background: #1f1f1f;
  color: #e6e6e6;
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--line-body);
  overflow-x: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

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

iframe {
  max-width: 100%;
}

table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: var(--space-3);
  font-size: var(--text-small);
  line-height: 1.5;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
}

.page,
.layout-document,
.layout-home {
  width: var(--measure);
  max-width: 100%;
  margin: 0 auto;
  padding: var(--page-pad-y) var(--page-pad-x) var(--space-5);
}

.page.home {
  width: 100%;
  max-width: 100%;
}

@media (min-width: 1600px) {
  :root {
    --measure: min(52rem, 100%);
  }
}

@media (min-width: 2400px) {
  :root {
    --measure: min(56rem, 100%);
    --text-body: 1.05rem;
  }
}

h1,
h2,
h3,
h4 {
  line-height: var(--line-heading);
  font-weight: 700;
  overflow-wrap: break-word;
}

h1 {
  font-size: var(--text-h1);
  margin: 0 0 var(--space-2);
}

h2 {
  font-size: var(--text-h2);
  margin: var(--space-4) 0 var(--space-2);
}

h3 {
  font-size: var(--text-h3);
  margin: var(--space-4) 0 var(--space-2);
}

h4 {
  font-size: var(--text-body);
  margin: var(--space-3) 0 var(--space-2);
}

p {
  margin: 0 0 var(--space-3);
  max-width: 100%;
}

ul,
ol {
  margin: 0 0 var(--space-3);
  padding-left: 1.25rem;
}

li {
  margin-bottom: var(--space-1);
}

li > ul,
li > ol {
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-4) 0;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.12em;
  text-decoration-thickness: from-font;
}

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

a:hover {
  text-decoration-thickness: 0.08em;
}

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

/* Accessible tap targets on touch devices without breaking prose density on desktop */
@media (pointer: coarse) {
  .home-list a,
  .related-links a,
  .foot a,
  .nav-plain a,
  .resume-versions a {
    display: inline-block;
    padding: 0.35rem 0;
    min-height: var(--tap-min);
    line-height: 1.4;
  }
}

.inline-icon {
  display: inline-block;
  vertical-align: -0.2em;
  margin-right: 0.35rem;
}

.support-block {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule, #d0d0d0);
}

.support-block h2 {
  font-size: 1rem;
  font-weight: 600;
}

.muted,
.tagline,
.meta,
.section-label {
  color: var(--color-text-muted);
}

.tagline {
  margin: 0 0 var(--space-3);
}

.section-label {
  font-size: var(--text-small);
  letter-spacing: 0.02em;
  margin: var(--space-4) 0 var(--space-2);
  text-transform: none;
}

.meta {
  font-size: var(--text-small);
  margin: 0 0 var(--space-3);
}

/* Homepage: hero + useful panels across available width */
.home-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3) var(--space-4);
  align-items: start;
}

.home-photo {
  margin: 0;
  padding: 0;
}

.home-photo img {
  width: 100%;
  height: auto;
  max-height: 14rem;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.home-lede {
  min-width: 0;
}

.home-intro {
  margin: 0 0 var(--space-3);
  max-width: 44rem;
}

.home-doors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.9rem;
  margin: 0 0 var(--space-3);
  font-size: var(--text-small);
  line-height: 1.5;
}

.home-doors a {
  white-space: nowrap;
}

.home-contact {
  margin: 0;
  font-size: var(--text-small);
}

.home-panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.home-panels h2 {
  margin-top: 0;
}

.home-panels .home-list {
  margin-bottom: 0;
}

.home-list,
.related-links,
.nav-plain,
.entity-list {
  list-style: disc;
}

.home-list time,
.entity-list time {
  color: var(--color-text-muted);
  font-size: var(--text-small);
  margin-right: var(--space-1);
  white-space: nowrap;
}

.home section,
.knowledge-page section {
  margin-top: 0;
}

/* Tablet+: photo beside lede; two info columns */
@media (min-width: 640px) {
  .home-hero {
    grid-template-columns: minmax(11rem, 38%) minmax(0, 1fr);
    gap: var(--space-4) var(--space-5);
  }

  .home-photo img {
    max-height: none;
  }

  .home-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-5);
  }

  .home-panels section:last-child {
    grid-column: 1 / -1;
  }
}

/* Desktop: three useful panels across the full home shell */
@media (min-width: 980px) {
  .home-hero {
    grid-template-columns: minmax(14rem, 26rem) minmax(0, 1fr);
  }

  .home-panels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-panels section:last-child {
    grid-column: auto;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-bg);
  color: var(--color-link);
  padding: var(--space-2) var(--space-3);
  z-index: 100;
}

.skip-link:focus {
  left: var(--page-pad-x);
  top: var(--space-2);
}

.foot,
.site-footer {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.site-header {
  margin-bottom: var(--space-4);
}

.site-title {
  margin: 0;
  font-size: var(--text-small);
}

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
  word-break: break-word;
}

.draft-banner {
  border: 1px solid #c9a227;
  background: #fff8e7;
  color: #5c4300;
  padding: var(--space-2) var(--space-3);
  margin: 0 0 var(--space-4);
  font-size: var(--text-small);
}

.placeholder {
  color: var(--color-text-muted);
  font-style: italic;
}

/* Evidence / relationship blocks */
.related-grid {
  display: block;
}

.related-grid h3 {
  margin-top: var(--space-4);
}

.media-frame {
  margin: 0 0 var(--space-4);
}

.media-frame figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.resume-versions {
  margin: 0 0 var(--space-4);
  padding-left: 1.25rem;
}

/* Currently Reading log (sites/currently-reading, generated by scripts/build-reading.js) */
.reading-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.9rem;
  margin: 0 0 var(--space-4);
  font-size: var(--text-small);
}

.reading-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  margin: 0 0 var(--space-4);
}

.reading-table-wrap:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.reading-table {
  display: table;
  width: 100%;
  font-size: var(--text-small);
  line-height: 1.45;
}

.reading-table th,
.reading-table td {
  padding: 0.4rem 0.75rem 0.4rem 0;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.reading-table thead th {
  color: var(--color-text-muted);
  font-weight: 400;
  white-space: nowrap;
}

.reading-table tbody th {
  font-weight: 400;
}

.reading-table tr > :last-child {
  padding-right: 0;
  white-space: nowrap;
}

.reading-entry,
.reading-built {
  margin: var(--space-5) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.reading-entry--finished {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
}

.reading-entry h3,
.reading-built h3 {
  margin-top: 0;
}

.reading-entry h4 {
  margin: var(--space-3) 0 var(--space-1);
}

.reading-num {
  margin-right: 0.35rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.85em;
  font-weight: 400;
}

.reading-author {
  margin: 0 0 var(--space-2);
}

.reading-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.25rem;
  margin: 0 0 var(--space-2);
  font-size: var(--text-small);
}

.reading-facts div {
  display: flex;
  gap: 0.35rem;
}

.reading-facts dt {
  color: var(--color-text-muted);
}

.reading-facts dt::after {
  content: ":";
}

.reading-facts dd {
  margin: 0;
}

.reading-links,
.reading-tags {
  font-size: var(--text-small);
}

.reading-empty p {
  margin: 0 0 var(--space-1);
}

/* Phones: table rows become a title line plus one compact meta line */
@media (max-width: 560px) {
  .reading-table,
  .reading-table tbody,
  .reading-table tr,
  .reading-table th,
  .reading-table td {
    display: block;
  }

  .reading-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .reading-table tr {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .reading-table th,
  .reading-table td {
    padding: 0;
    border: 0;
  }

  .reading-table tbody th {
    margin-bottom: 0.15rem;
    font-size: var(--text-body);
  }

  .reading-table td {
    display: inline;
    color: var(--color-text-muted);
  }

  .reading-table td + td::before {
    content: " · ";
  }
}

/* Foldables / very narrow */
@media (max-width: 360px) {
  :root {
    --page-pad-x: 0.85rem;
    --text-body: 0.95rem;
  }

  ul,
  ol {
    padding-left: 1.1rem;
  }
}

/* Phones */
@media (max-width: 480px) {
  h2 {
    margin-top: var(--space-4);
  }

  .site-chrome {
    top: 0.35rem;
    right: 0.35rem;
    padding: 0.25rem 0.4rem;
  }
}

/* Fixed top-right chrome: B/W theme toggle */
.site-chrome {
  position: fixed;
  top: 0.65rem;
  right: 0.75rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.35rem 0.55rem;
  background: var(--color-chrome-bg);
  border: 1px solid var(--color-chrome-border);
  font-size: var(--text-small);
  color: var(--color-text-muted);
  backdrop-filter: blur(4px);
}

.site-chrome__toggle {
  margin: 0;
  padding: 0.2rem 0.55rem;
  min-height: 1.75rem;
  border: 1px solid var(--color-text);
  background: var(--color-button-bg);
  color: var(--color-button-text);
  font-family: var(--font-body);
  font-size: 0.78rem;
  line-height: 1.2;
  cursor: pointer;
}

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

.site-chrome__toggle:hover {
  opacity: 0.9;
}

/* Print */
@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .skip-link,
  .draft-banner,
  .site-chrome {
    display: none !important;
  }

  .page {
    max-width: none;
    padding: 0;
  }
}