/* UX Encyclopedia — design system.
   Practices what the library preaches: role-named tokens, 8pt spacing,
   AA contrast (verified at build), 45–75ch measure, visible focus,
   reduced-motion respect, elevated dark surfaces. */

:root {
  --paper: #FBFBF8;
  --surface: #F2F2ED;
  --ink: #191B1F;
  --muted: #585E66;
  --line: #E0E0D8;
  --accent: #2733D9;
  --accent-ink: #FFFFFF;
  --accent-soft: #EAEBFC;
  --shadow: 0 1px 2px rgb(20 22 26 / .06), 0 8px 24px rgb(20 22 26 / .07);

  --font-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Atkinson Hyperlegible", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;

  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 32px; --s6: 48px; --s8: 64px; --s12: 96px;
  --radius: 10px; --radius-sm: 6px;
  --measure: 70ch;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131418; --surface: #1C1E24; --ink: #E9E9E4; --muted: #A6AAB2;
    --line: #2C2F36; --accent: #A3ABFF; --accent-ink: #10121A;
    --accent-soft: #23263B;
    --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .35);
    color-scheme: dark;
  }
}
:root[data-theme="light"] {
  --paper: #FBFBF8; --surface: #F2F2ED; --ink: #191B1F; --muted: #585E66;
  --line: #E0E0D8; --accent: #2733D9; --accent-ink: #FFFFFF; --accent-soft: #EAEBFC;
  --shadow: 0 1px 2px rgb(20 22 26 / .06), 0 8px 24px rgb(20 22 26 / .07);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --paper: #131418; --surface: #1C1E24; --ink: #E9E9E4; --muted: #A6AAB2;
  --line: #2C2F36; --accent: #A3ABFF; --accent-ink: #10121A; --accent-soft: #23263B;
  --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .35);
  color-scheme: dark;
}

/* ---------- reset-lite ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 1.0625rem; line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.skip {
  position: absolute; left: var(--s2); top: -48px; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: var(--s1) var(--s2); border-radius: var(--radius-sm);
  transition: top .15s;
}
.skip:focus { top: var(--s2); }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: var(--s2);
  padding: 10px var(--s3);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
/* logo: the system stroke × the human curve — redraws on hover */
@media (prefers-reduced-motion: no-preference) {
  .brand:hover .logo-hum, .brand:focus-visible .logo-hum {
    stroke-dasharray: 1; stroke-dashoffset: 1;
    animation: logo-draw .55s ease-out forwards;
  }
}
@keyframes logo-draw { to { stroke-dashoffset: 0; } }
.search-btn {
  flex: 1; max-width: 460px; margin-inline: auto;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px; min-height: 44px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; color: var(--muted); text-align: left;
}
.search-btn:hover { border-color: var(--accent); }
.search-btn span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
kbd {
  font-family: var(--font-mono); font-size: .72rem; color: var(--muted);
  border: 1px solid var(--line); border-radius: 5px; padding: 2px 6px;
  background: var(--paper);
}
.menu-btn, .theme-btn {
  display: grid; place-items: center; width: 44px; height: 44px;
  border-radius: var(--radius-sm); color: var(--ink);
}
.menu-btn:hover, .theme-btn:hover { background: var(--surface); }
.menu-btn { display: none; }
.i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: none; }
:root[data-theme="dark"] .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .i-sun, :root[data-theme="dark"] .i-sun { display: none; }
  :root:not([data-theme]) .i-moon { display: block; }
  :root[data-theme="light"] .i-sun { display: block; }
  :root[data-theme="light"] .i-moon { display: none; }
}

/* ---------- layout ---------- */
.layout {
  display: grid; grid-template-columns: 264px minmax(0, 1fr) 224px;
  gap: var(--s4); max-width: 1360px; margin: 0 auto; padding: var(--s4) var(--s3);
}
main { min-width: 0; }

/* sidebar */
.sidebar {
  position: sticky; top: 76px; align-self: start;
  max-height: calc(100vh - 92px); overflow-y: auto;
  font-size: .92rem;
  /* left/right padding keeps focus outlines from clipping at the
     scroll container's edges (outline 2px + offset 2px = 4px) */
  padding: 4px var(--s1) 4px 4px; margin-left: -4px;
}
.nav-home, .nav-res {
  display: block; padding: 8px 10px; border-radius: var(--radius-sm);
  color: var(--ink); text-decoration: none; font-weight: 700;
}
.nav-sec summary {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: var(--radius-sm);
  font-weight: 700; cursor: pointer; list-style: none; user-select: none;
}
.nav-sec summary::-webkit-details-marker { display: none; }
.nav-sec summary:hover, .nav-home:hover, .nav-res:hover { background: var(--surface); }
.nav-sec .glyph { width: 18px; height: 18px; color: var(--accent); flex: none; }
.nav-sec ul { list-style: none; margin: 2px 0 var(--s1); padding-left: 26px; }
.nav-sec a {
  display: block; padding: 5px 10px; border-radius: var(--radius-sm);
  color: var(--muted); text-decoration: none;
  border-left: 2px solid var(--line); margin-left: -2px;
}
.nav-sec a:hover { color: var(--ink); background: var(--surface); }
.nav-sec a[aria-current="page"] {
  color: var(--accent); border-left-color: var(--accent); font-weight: 700;
}

/* toc */
.toc {
  position: sticky; top: 76px; align-self: start;
  max-height: calc(100vh - 92px); overflow-y: auto; font-size: .85rem;
  padding: 4px 4px 4px 0; margin-right: -4px;
}
.toc h2 {
  font-family: var(--font-body); font-size: .72rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 var(--s1);
}
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc a {
  display: block; padding: 4px 10px; color: var(--muted); text-decoration: none;
  border-left: 2px solid var(--line);
}
.toc a:hover { color: var(--ink); }
.toc a[aria-current="true"] { color: var(--accent); border-left-color: var(--accent); }

/* ---------- prose ---------- */
.prose { max-width: var(--measure); }
.prose h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.7rem, 1.3rem + 1.8vw, 2.4rem);
  line-height: 1.15; letter-spacing: -.01em; margin: var(--s2) 0 var(--s2);
  text-wrap: balance;
}
.prose h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.32rem; line-height: 1.25; margin: var(--s6) 0 var(--s2);
  padding-top: var(--s2); border-top: 1px solid var(--line);
}
.prose h3 { font-size: 1.05rem; margin: var(--s3) 0 var(--s1); }
.prose p, .prose ul, .prose ol { margin: 0 0 var(--s2); }
.prose li { margin-bottom: 6px; }
.prose li::marker { color: var(--accent); }
.prose a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.prose a:hover { text-decoration-thickness: 2px; }
/* external links open a new tab — mark them so users know before clicking */
.prose a[target="_blank"]::after,
.law-fig figcaption a[target="_blank"]::after,
.demo figcaption a[target="_blank"]::after {
  content: " ↗" / " (opens in a new tab)";
  font-size: .78em; opacity: .75;
}
@supports not (content: "x" / "y") {
  .prose a[target="_blank"]::after { content: " ↗"; }
}
.prose strong { font-weight: 700; }
.prose code {
  font-family: var(--font-mono); font-size: .88em;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 5px;
}
.prose pre {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: var(--s2); overflow-x: auto;
}
.prose pre code { background: none; border: 0; padding: 0; }
.prose blockquote {
  margin: 0 0 var(--s2); padding: var(--s1) var(--s2);
  border-left: 3px solid var(--accent); background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--muted);
}
.table-scroll { overflow-x: auto; margin: 0 0 var(--s2); border: 1px solid var(--line); border-radius: var(--radius); }
.prose table { border-collapse: collapse; width: 100%; font-size: .92rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { background: var(--surface); font-family: var(--font-display); font-weight: 700; white-space: nowrap; }
.prose tr:last-child td { border-bottom: 0; }

.crumb { display: flex; gap: 8px; font-size: .82rem; color: var(--muted); }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--accent); }

/* sources — visible, quietly set apart */
.sources-h { border-top: 2px solid var(--accent) !important; }
.sources-h + ul, .sources-h ~ ul:last-of-type { font-size: .88rem; color: var(--muted); }
.sources-h + ul li::marker { color: var(--muted); }

/* prev / next */
.pn {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--s2);
  margin-top: var(--s8); padding-top: var(--s3); border-top: 1px solid var(--line);
}
.pn a {
  display: block; padding: var(--s2); border: 1px solid var(--line);
  border-radius: var(--radius); text-decoration: none; color: var(--ink);
  font-weight: 700; font-family: var(--font-display);
}
.pn a span { display: block; font: .72rem var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.pn a:hover { border-color: var(--accent); }
.pn-next { text-align: right; grid-column: 2; }

/* ---------- section index cards ---------- */
.section-index h1 { display: flex; align-items: center; gap: var(--s2); }
.section-index .glyph { width: 34px; height: 34px; color: var(--accent); }
.section-index { max-width: none; }
.section-index .lede { max-width: var(--measure); }
.lede { font-size: 1.15rem; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--s2); margin-top: var(--s3); }
.card {
  display: block; padding: var(--s3); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); text-decoration: none;
}
.card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.card h3 { margin: 0 0 var(--s1); font-family: var(--font-display); font-size: 1.05rem; }
.card p { margin: 0; font-size: .9rem; color: var(--muted); }

/* ---------- home ---------- */
.hero { padding: var(--s8) 0 var(--s6); max-width: 780px; }
.eyebrow {
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 var(--s2);
}
.hero h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.1rem, 1.2rem + 4.4vw, 3.6rem);
  line-height: 1.06; letter-spacing: -.015em; margin: 0 0 var(--s3);
  text-wrap: balance;
}
.hero .lede { margin: 0 0 var(--s4); max-width: 62ch; }
.finder {
  display: flex; align-items: center; gap: var(--s2); width: 100%; max-width: 640px;
  min-height: 64px; padding: var(--s2) var(--s3);
  background: var(--paper); border: 2px solid var(--ink);
  border-radius: 999px; box-shadow: var(--shadow);
  font-family: var(--font-display); font-weight: 500; font-size: 1.15rem;
  color: var(--muted); text-align: left;
}
.finder:hover { border-color: var(--accent); color: var(--ink); }
.finder svg { color: var(--accent); flex: none; }
.finder span { flex: 1; }
.chips { display: flex; flex-wrap: wrap; gap: var(--s1); margin-top: var(--s2); }
.chip {
  padding: 8px 14px; min-height: 40px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--surface); font-size: .88rem; color: var(--muted);
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

.floor { margin: var(--s6) 0; padding: var(--s4); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.floor h2, .sections h2, .promise h2 { font-family: var(--font-display); font-size: 1.35rem; margin: 0 0 var(--s3); }
.floor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: var(--s2); margin: 0; }
.floor-item dt { font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.floor-item dd { margin: 2px 0 0; font-family: var(--font-mono); font-size: .95rem; font-weight: 700; }

.sections { margin: var(--s6) 0; }
.sec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: var(--s2); }
.sec-card {
  position: relative; display: block; padding: var(--s3);
  border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); text-decoration: none; background: var(--paper);
}
.sec-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.sec-card .glyph { width: 26px; height: 26px; color: var(--accent); }
.sec-card h3 { margin: var(--s2) 0 var(--s1); font-family: var(--font-display); font-size: 1.1rem; }
.sec-card p { margin: 0 0 var(--s2); font-size: .88rem; color: var(--muted); }
.sec-card .count { font-family: var(--font-mono); font-size: .75rem; color: var(--accent); }

.promise { margin: var(--s6) 0 var(--s4); }
.promise-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--s3); }
.promise-grid h3 { margin: 0 0 var(--s1); font-family: var(--font-display); font-size: 1rem; }
.promise-grid p { margin: 0; font-size: .9rem; color: var(--muted); }
.res-link { margin-top: var(--s3); }
.res-link a { color: var(--accent); font-weight: 700; text-decoration: none; }
.res-link a:hover { text-decoration: underline; }

/* ---------- interactive demos ---------- */
.demo {
  margin: var(--s3) 0; padding: var(--s3); background: var(--surface);
  border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  /* figures adapt to their column, not the viewport */
  container-type: inline-size;
}
.demo-body { min-width: 0; }
@container (max-width: 480px) { .demo .stage { padding: var(--s1); } }
.demo figcaption { font-size: .9rem; color: var(--muted); margin-bottom: var(--s2); }
.demo-body { display: grid; gap: var(--s2); }
.demo input[type="range"] { width: 100%; accent-color: var(--accent); }
.demo label { font-size: .85rem; font-weight: 700; }
.demo .readout { font-family: var(--font-mono); font-size: .85rem; }
.demo .stage {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: var(--s2); overflow: hidden;
}
.demo .verdict-pass { color: #1B7F3B; font-weight: 700; }
.demo .verdict-fail { color: #C0342B; font-weight: 700; }
:root[data-theme="dark"] .demo .verdict-pass { color: #59C97F; }
:root[data-theme="dark"] .demo .verdict-fail { color: #FF7A70; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .demo .verdict-pass { color: #59C97F; }
  :root:not([data-theme]) .demo .verdict-fail { color: #FF7A70; }
}

/* ---------- theme-swap demo (style encyclopedia) ----------
   Skins change; skeleton (layout, hierarchy, AA contrast) never does. */
.ts-stage { border-radius: var(--radius-sm); padding: 28px; transition: background .25s; }
.ts-card { max-width: 340px; padding: 22px; }
.ts-eyebrow { margin: 0 0 6px; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; }
.ts-h { margin: 0 0 8px; font-size: 1.3rem; line-height: 1.15; }
.ts-p { margin: 0 0 16px; font-size: .88rem; line-height: 1.5; }
.ts-btn { min-height: 42px; padding: 10px 18px; font-weight: 700; cursor: pointer; }
.ts-link { margin-left: 14px; font-size: .88rem; }

.ts-deco { background: #14100B; }
.ts-deco .ts-card { background: #1E1811; border: 1px solid #D4AF37; color: #F2E7C9; }
.ts-deco .ts-eyebrow { color: #D4AF37; }
.ts-deco .ts-h { font-family: var(--font-display); letter-spacing: .06em; text-transform: uppercase; }
.ts-deco .ts-btn { background: #D4AF37; color: #14100B; border: 0; border-radius: 0; clip-path: polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px); }
.ts-deco .ts-link { color: #D4AF37; }

.ts-destijl { background: #FFFFFF; }
.ts-destijl .ts-card { background: #FFF; border: 3px solid #111; color: #111; border-radius: 0; }
.ts-destijl .ts-eyebrow { color: #1E4B9E; }
.ts-destijl .ts-btn { background: #B10D1E; color: #FFF; border: 3px solid #111; border-radius: 0; }
.ts-destijl .ts-link { color: #1E4B9E; }

.ts-bauhaus { background: #F5F1E8; }
.ts-bauhaus .ts-card { background: #F5F1E8; border: 2px solid #1A1A1A; color: #1A1A1A; border-radius: 0; }
.ts-bauhaus .ts-eyebrow { color: #1859A9; }
.ts-bauhaus .ts-h { text-transform: lowercase; font-family: var(--font-display); }
.ts-bauhaus .ts-btn { background: #1859A9; color: #FFF; border: 0; border-radius: 999px 0 999px 0; }
.ts-bauhaus .ts-link { color: #C22D1E; }

.ts-swiss { background: #FFFFFF; }
.ts-swiss .ts-card { background: #FFF; color: #111; border: 0; border-top: 6px solid #111; border-radius: 0; }
.ts-swiss .ts-eyebrow { color: #555; }
.ts-swiss .ts-h { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-weight: 700; letter-spacing: -.01em; }
.ts-swiss .ts-btn { background: #C8102E; color: #FFF; border: 0; border-radius: 0; }
.ts-swiss .ts-link { color: #111; }

.ts-mcm { background: #F6EFE3; }
.ts-mcm .ts-card { background: #FFF; color: #2E2A25; border: 0; border-radius: 14px 14px 60px 14px; box-shadow: 4px 4px 0 #D8A020; }
.ts-mcm .ts-eyebrow { color: #0F6E6E; }
.ts-mcm .ts-btn { background: #0F6E6E; color: #FFF; border: 0; border-radius: 999px; }
.ts-mcm .ts-link { color: #B4531F; }

.ts-memphis { background: #FDF6F0; background-image: radial-gradient(#1A1A1A 1.2px, transparent 1.2px); background-size: 18px 18px; }
.ts-memphis .ts-card { background: #FFF; color: #1A1A1A; border: 3px solid #1A1A1A; border-radius: 16px; box-shadow: 8px 8px 0 #7CD8CD; }
.ts-memphis .ts-eyebrow { color: #C2187E; }
.ts-memphis .ts-btn { background: #F7C948; color: #1A1A1A; border: 3px solid #1A1A1A; border-radius: 12px 2px 12px 2px; }
.ts-memphis .ts-link { color: #C2187E; }

.ts-psych { background: #2A0E4F; }
.ts-psych .ts-card { background: #3A1668; color: #FFE9A8; border: 2px solid #FF6EC7; border-radius: 40px 12px 40px 12px; }
.ts-psych .ts-eyebrow { color: #FF9DDB; }
.ts-psych .ts-h { font-family: var(--font-display); font-style: italic; }
.ts-psych .ts-btn { background: #FFD84D; color: #2A0E4F; border: 0; border-radius: 999px; }
.ts-psych .ts-link { color: #FF9DDB; }

.ts-wabi { background: #F4F0E8; }
.ts-wabi .ts-card { background: #F4F0E8; color: #3B372F; border: 1px solid #C9C0B0; border-radius: 4px; }
.ts-wabi .ts-eyebrow { color: #77705F; }
.ts-wabi .ts-p { color: #5B5546; }
.ts-wabi .ts-btn { background: transparent; color: #3B372F; border: 1px solid #3B372F; border-radius: 3px; }
.ts-wabi .ts-link { color: #77705F; }

.ts-win95 { background: #008080; }
.ts-win95 .ts-card { background: #C0C0C0; color: #000; border-radius: 0; border: 2px solid; border-color: #FFF #404040 #404040 #FFF; font-family: Tahoma, "MS Sans Serif", sans-serif; }
.ts-win95 .ts-eyebrow { background: #000080; color: #FFF; padding: 3px 6px; letter-spacing: 0; text-transform: none; font-weight: 700; }
.ts-win95 .ts-btn { background: #C0C0C0; color: #000; border: 2px solid; border-color: #FFF #404040 #404040 #FFF; border-radius: 0; }
.ts-win95 .ts-btn:active { border-color: #404040 #FFF #FFF #404040; }
.ts-win95 .ts-link { color: #0000CC; }

.ts-flat { background: #ECF0F1; }
.ts-flat .ts-card { background: #FFF; color: #2C3E50; border: 0; border-radius: 4px; }
.ts-flat .ts-eyebrow { color: #7F8C8D; }
.ts-flat .ts-btn { background: #0B6FBB; color: #FFF; border: 0; border-radius: 4px; }
.ts-flat .ts-link { color: #0B6FBB; }

.ts-material { background: #FAFAFA; }
.ts-material .ts-card { background: #FFF; color: rgb(0 0 0 / .87); border: 0; border-radius: 8px; box-shadow: 0 1px 3px rgb(0 0 0 / .2), 0 2px 8px rgb(0 0 0 / .14); }
.ts-material .ts-eyebrow { color: #5E35B1; }
.ts-material .ts-btn { background: #5E35B1; color: #FFF; border: 0; border-radius: 20px; box-shadow: 0 2px 4px rgb(0 0 0 / .25); text-transform: uppercase; font-size: .8rem; letter-spacing: .06em; }
.ts-material .ts-link { color: #5E35B1; }

.ts-neu { background: #E4EBF1; }
.ts-neu .ts-card { background: #E4EBF1; color: #55606B; border: 0; border-radius: 20px; box-shadow: 9px 9px 18px #C3CCD3, -9px -9px 18px #FFFFFF; }
.ts-neu .ts-eyebrow { color: #7A8794; }
.ts-neu .ts-btn { background: #E4EBF1; color: #55606B; border: 0; border-radius: 14px; box-shadow: 5px 5px 10px #C3CCD3, -5px -5px 10px #FFF; }
.ts-neu .ts-link { color: #6B7885; }

.ts-glass { background: linear-gradient(130deg, #5B3FA8, #2C6BB8 55%, #35A08C); }
.ts-glass .ts-card { background: rgb(255 255 255 / .18); backdrop-filter: blur(14px); color: #FFF; border: 1px solid rgb(255 255 255 / .4); border-radius: 18px; }
.ts-glass .ts-eyebrow { color: rgb(255 255 255 / .85); }
.ts-glass .ts-btn { background: rgb(255 255 255 / .92); color: #1E2A5A; border: 0; border-radius: 999px; }
.ts-glass .ts-link { color: #FFF; }

.ts-brut { background: #FFF6D8; }
.ts-brut .ts-card { background: #FFF; color: #000; border: 3px solid #000; border-radius: 0; box-shadow: 7px 7px 0 #000; }
.ts-brut .ts-eyebrow { color: #000; font-family: var(--font-mono); }
.ts-brut .ts-h { font-family: var(--font-mono); text-transform: uppercase; }
.ts-brut .ts-btn { background: #FFD400; color: #000; border: 3px solid #000; border-radius: 0; box-shadow: 4px 4px 0 #000; }
.ts-brut .ts-btn:active { translate: 3px 3px; box-shadow: 1px 1px 0 #000; }
.ts-brut .ts-link { color: #000; }

/* ---------- law diagrams (static visual aids) ---------- */
.law-fig { margin: var(--s2) 0 var(--s3); }
.law-fig svg {
  width: 100%; height: auto; display: block;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.law-fig figcaption { font-size: .82rem; color: var(--muted); margin-top: 6px; }
.law-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--s2); margin: var(--s2) 0 var(--s3);
}
.law-grid .law-fig { margin: 0; }
/* svg vocabulary: strokes s-, fills f-, text t- — all tokens */
.law-fig .sac { stroke: var(--accent); } .law-fig .smu { stroke: var(--muted); }
.law-fig .sli { stroke: var(--line); }  .law-fig .sik { stroke: var(--ink); }
.law-fig .fac { fill: var(--accent); }  .law-fig .fmu { fill: var(--muted); }
.law-fig .fli { fill: var(--line); }    .law-fig .fsu { fill: var(--surface); }
.law-fig .fpa { fill: var(--paper); }   .law-fig .fnone { fill: none; }
.law-fig .fas { fill: var(--accent-soft); }
.law-fig .tik { fill: var(--ink); font: 600 12px var(--font-body); }
.law-fig .tmu { fill: var(--muted); font: 500 11px var(--font-body); }
.law-fig .tmo { fill: var(--muted); font: 500 10px var(--font-mono); }
.law-fig .tac { fill: var(--accent); font: 700 11px var(--font-body); }
/* HTML type specimens inside law figures */
.law-fig .spec {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: var(--s2) var(--s3);
  overflow-x: auto;
}
.law-fig .spec .lbl {
  font: 500 10px var(--font-mono); color: var(--muted);
  display: block; margin: var(--s1) 0 2px;
}

/* ---------- search dialog ---------- */
.search-dialog {
  width: min(680px, calc(100vw - 32px));
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); color: var(--ink);
  padding: 0; box-shadow: var(--shadow); margin-top: 10vh;
}
.search-dialog::backdrop { background: rgb(10 11 14 / .5); backdrop-filter: blur(2px); }
.sd-box input {
  width: 100%; padding: var(--s2) var(--s3); font: inherit; font-size: 1.1rem;
  background: none; border: 0; border-bottom: 1px solid var(--line);
  color: var(--ink); outline: none;
}
.sd-hint { padding: 6px var(--s3); font-size: .75rem; color: var(--muted); border-bottom: 1px solid var(--line); }
.sd-results { max-height: 55vh; overflow-y: auto; padding: var(--s1); }
.sd-group {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); padding: var(--s1) 10px 4px;
}
.sd-item {
  display: block; padding: 10px 12px; border-radius: var(--radius-sm);
  text-decoration: none; color: var(--ink);
}
.sd-item:hover, .sd-item:focus { background: var(--accent-soft); outline: none; }
.sd-item .t { font-weight: 700; font-family: var(--font-display); }
.sd-item .t em { color: var(--accent); font-style: normal; }
.sd-item .c { display: block; font-size: .82rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sd-item .s { font-family: var(--font-mono); font-size: .72rem; color: var(--accent); }
.sd-empty { padding: var(--s3); color: var(--muted); }

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line); margin-top: var(--s8);
  padding: var(--s3); text-align: center; font-size: .85rem; color: var(--muted);
}
.foot-offline { margin-top: var(--s1); }
.foot-det3d {
  max-width: 62ch; margin: 0 auto var(--s4);
  padding-bottom: var(--s3); border-bottom: 1px solid var(--line);
}
.foot-det3d-lead {
  font-size: 1rem; font-weight: 700; color: var(--ink); margin-bottom: var(--s1);
}
.foot-det3d-copy { color: var(--muted); }
.foot-det3d-copy strong { color: var(--ink); font-weight: 600; }
.foot-det3d-cta {
  margin-top: var(--s2); font-weight: 600; color: var(--ink);
}
.foot-det3d-cta a {
  display: inline-block; padding: 4px 10px; border-radius: var(--radius-sm);
  background: var(--accent-soft); color: var(--accent);
  text-decoration: none; font-weight: 700;
}
.foot-det3d-cta a:hover { text-decoration: underline; }
.foot-det3d-sep { color: var(--muted); margin: 0 4px; }
.install-btn {
  min-height: 40px; padding: 6px 16px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink); font-weight: 700;
  margin-left: 6px;
}
.install-btn:hover { opacity: .9; }

/* ---------- print ---------- */
@media print {
  .top, .sidebar, .toc, .foot, .search-dialog, .pn, .demo, .skip { display: none !important; }
  .layout { display: block; padding: 0; max-width: none; }
  .prose { max-width: none; }
  body { font-size: 11pt; background: #fff; color: #000; }
  .prose a { color: #000; }
  .prose a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .8em; color: #444; }
}

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .layout { grid-template-columns: 250px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 820px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding: var(--s3) var(--s2); }
  .menu-btn { display: grid; }
  .search-btn span { display: none; }
  .search-btn { flex: none; margin-left: auto; width: 44px; justify-content: center; padding: 8px; }
  .search-btn kbd { display: none; }
  .sidebar {
    position: fixed; inset: 61px 0 0 0; z-index: 40;
    background: var(--paper); padding: var(--s2);
    max-height: none; transform: translateX(-100%);
    visibility: hidden; transition: transform .2s, visibility .2s;
    border-right: 1px solid var(--line); width: min(320px, 85vw);
  }
  body.nav-open .sidebar { transform: none; visibility: visible; }
  body.nav-open { overflow: hidden; }
  .hero { padding: var(--s4) 0; }
  .pn { grid-template-columns: 1fr; }
  .pn-next { grid-column: auto; text-align: left; }
}