/* =======================================
   TOP Pattern Library — Unified Styles
   ======================================= */

/* ---------- Design Tokens (Light) ---------- */
:root {
  /* Core palette */
  --bg: #f8fafc;
  --surface: #ffffff;
  --panel: var(--surface);            /* alias used by reader */
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --accent-weak: #eef2ff;

  /* Status / type */
  --good: #6366f1;
  --bad: #ef4444;

  /* Layout */
  --radius: 12px;
  --shadow: 0 2px 12px rgba(15, 23, 42, .06);
  --sidebar-w: 340px;
  --content-max: 1160px;
  --col-gap: 24px;
  --row-gap: 24px;
  --bg-muted: hsl(210 80% 50% / .2);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #0f172a;
    --panel: #0f172a;
    --text: #e5e7eb;
    --muted: #9aa3b2;
    --border: #1f2a44;
    --accent: #8b95ff;
    --accent-weak: #1b2145;
    --shadow: 0 1px 10px rgba(0, 0, 0, .6);

    --good: #a5b4fc;
    --bad: #fca5a5;
  }
}

/* ---------- Base Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { 
  height: 100%; 
  max-width: 100vw; 
  overflow-x: hidden; 
  margin: 0; 
  position: relative;
}
[hidden] { display: none !important; }

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* =======================================
   PAGE CHROME (header, layout, sidebar)
   ======================================= */
header {
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
}
.headbar {
  margin: 0 auto;
  padding: .5rem .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  min-height: 48px;
}
.brand,
a.brand { 
  display: flex; 
  align-items: center; 
  gap: .5rem; 
  min-width: 0;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.brand img,
a.brand img { width: 24px; height: 24px; }
.brand h1,
a.brand h1 {
  margin: 0; font-size: 1rem; font-weight: 700;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.header-actions { 
  display: none; 
  margin-right: 0.5rem;
}
@media (max-width: 960px) {
  .header-actions { 
    display: flex; 
  }
}
nav.primary { margin-left: auto; display: flex; gap: .4rem; align-items: center; }

.pattern-filter {
    -webkit-appearance: none;
    appearance: none;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    outline: none;
    min-width: 200px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.pattern-filter::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.pattern-filter:focus {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 960px) {
    .pattern-filter {
        min-width: 150px;
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
}
nav.primary a {
  color: #fff; text-decoration: none;
  padding: .3rem .5rem; border-radius: .5rem;
  background: rgba(255, 255, 255, .12); font-size: .85rem;
}
nav.primary a:hover { background: rgba(255, 255, 255, .18); }
nav.primary picture {
  display: flex;
  align-items: center;
  padding: .2rem;
  border-radius: .5rem;
  transition: filter 0.2s ease;
}
nav.primary picture:hover { filter: brightness(2.2); }
nav.primary picture img {
  height: 32px;
  width: auto;
  display: block;
}
.iconbtn {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.12);
  color: #fff; border-radius: .6rem; cursor: pointer;
}
.iconbtn svg { width: 20px; height: 20px; }

/* Layout grid */
main {
  width: 100%;
  max-width: 100%;
  flex: 1;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 1rem;
  min-height: 0;
  overflow: hidden;
  padding: 1rem;
  box-sizing: border-box;
}
@media (max-width: 960px) { main { grid-template-columns: 1fr; } }

/* ---------- Sidebar (sticky + pill list) ---------- */
.sidebar{
  position: sticky;
  top: 1rem;
  align-self: start;
  box-sizing: border-box;
  max-height: calc(100vh - 48px - 2rem);
  display: flex;
  flex-direction: column;
  gap: .625rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  isolation: isolate;
  overflow: hidden;
}
.sidebar .search-group{
  position: sticky; top: 0; z-index: 2;
  background: var(--surface);
  padding-bottom: .5rem;
  margin-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
.sidebar .count{ margin-top: -.25rem; color: var(--muted); font-size: .9rem; }
.sidebar .list{ overflow: auto; min-height: 0; padding-right: 2px; }

/* Custom scrollbar styling */
.sidebar .list::-webkit-scrollbar,
.content::-webkit-scrollbar,
.content-body::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.sidebar .list::-webkit-scrollbar-track,
.content::-webkit-scrollbar-track,
.content-body::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 4px;
}
.sidebar .list::-webkit-scrollbar-thumb,
.content::-webkit-scrollbar-thumb,
.content-body::-webkit-scrollbar-thumb {
  background: color-mix(in oklab, var(--muted) 40%, transparent);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.sidebar .list::-webkit-scrollbar-thumb:hover,
.content::-webkit-scrollbar-thumb:hover,
.content-body::-webkit-scrollbar-thumb:hover {
  background: color-mix(in oklab, var(--muted) 60%, transparent);
  background-clip: padding-box;
}
.sidebar .list::-webkit-scrollbar-thumb:active,
.content::-webkit-scrollbar-thumb:active,
.content-body::-webkit-scrollbar-thumb:active {
  background: color-mix(in oklab, var(--accent) 50%, transparent);
  background-clip: padding-box;
}

/* Firefox scrollbar styling */
.sidebar .list,
.content,
.content-body {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in oklab, var(--muted) 40%, transparent) transparent;
}
.sidebar .list:hover,
.content:hover,
.content-body:hover {
  scrollbar-color: color-mix(in oklab, var(--muted) 60%, transparent) transparent;
}

/* block any rogue artwork inside sidebar */
.sidebar > svg,
.sidebar > canvas,
.sidebar > figure,
.sidebar > .decor,
.sidebar > .bg-graphic { display:none !important; }

/* block any rogue artwork in content areas */
.content > svg,
.content > canvas,
.content > figure,
.content > .decor,
.content > .bg-graphic,
.content-body > svg,
.content-body > canvas,
.content-body > figure,
.content-body > .decor,
.content-body > .bg-graphic,
.viewer > svg:not([slot]),
.viewer > canvas,
.viewer > figure:not(.hero),
.viewer > .decor,
.viewer > .bg-graphic { display:none !important; }

.sidebar .search-group input{
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  display: block;
  padding: .65rem .9rem;
  font: inherit;
  line-height: 1.2;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  outline: none;
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
}
.sidebar a{ color: inherit; text-decoration: none; }

/* Pills */
.sidebar .item{
  display: flex; align-items: center; gap: .6rem;
  padding: .55rem .7rem;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(
    90deg,
    color-mix(in oklab, var(--accent-weak) 45%, transparent),
    transparent
  );
  cursor: pointer;
  transition: border-color .12s ease, box-shadow .12s ease, background .12s ease;
  border-left: 6px solid transparent;
}
.sidebar .item:last-child {
  margin-bottom: 0;
}
.sidebar .item:hover{
  border-color: color-mix(in oklab, var(--accent) 28%, var(--border));
  box-shadow: 0 2px 12px rgba(15,23,42,.06);
  background: linear-gradient(
    90deg,
    color-mix(in oklab, var(--accent-weak) 60%, transparent),
    transparent
  );
}
.sidebar .item.active{
  border-color: var(--accent);
  background: linear-gradient(
    90deg,
    color-mix(in oklab, var(--accent-weak) 75%, transparent),
    transparent
  );
}
.sidebar .title{ font-weight: 600; line-height: 1.2; }
.sidebar .subtitle{ font-size: .8rem; color: var(--muted); }
.sidebar .item[data-type="pattern"]{ border-left-color: var(--good); }
.sidebar .item[data-type="anti-pattern"]{ border-left-color: var(--bad); }

/* Backdrop for mobile drawer */
.backdrop{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 55;
  display: none;
}
.backdrop:not([hidden]){ display: block; }

/* Mobile drawer */
@media (max-width: 960px){
  .sidebar{
    position: fixed; top: 0; left: 0; height: 100%;
    width: min(92vw, 420px); border-radius: 0; border-right: 1px solid var(--border);
    transform: translateX(-100%); transition: transform .25s ease-out; z-index: 60;
  }
  .drawer-open .sidebar{ transform: translateX(0); }
}

/* =======================================
   VIEWER (grid content area)
   ======================================= */
.viewer {
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;

  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  row-gap: var(--row-gap);
  line-height: 1.7;
  overflow-x: hidden;
}
.viewer .intro {
  grid-column: 1 / -1;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 12px;
}
.viewer .intro-header h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 2.2vw + 1rem, 2.6rem);
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.01em;
}
.viewer .intro-body p { margin: 0; }

/* Unified card style - used in both definition and pattern pages */
.viewer > .card,
.content-body .viewer .section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  margin: 0 0 2rem 0;
  min-width: 0;
  overflow-wrap: break-word;
  word-wrap: break-word;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}
.viewer > .card:hover,
.content-body .viewer .section:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-color: color-mix(in oklab, var(--accent) 20%, var(--border));
}
.viewer > .card {
  grid-column: span 6;
}
.viewer .card-header,
.content-body .viewer .section .card-header {
  padding: 1.75rem 2rem 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 50%, var(--panel));
}
.viewer .card-body,
.content-body .viewer .section .card-body {
  padding: 1.5rem 2rem 1.75rem 2rem;
}
.content-body .viewer .section .card-body:has(.section-image):has(.section-text) {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}
.content-body .viewer .section .card-body:has(.section-image:only-child) {
  display: block;
}
.viewer .card-header h2,
.content-body .viewer .section .card-header h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 1.75rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.viewer .card-body p,
.content-body .viewer .section .card-body p {
  margin: 0 0 1.25rem;
  font-size: 1.0625rem;
  color: var(--text);
}
.viewer .card-body ul,
.viewer .card-body ol,
.content-body .viewer .section .card-body ul,
.content-body .viewer .section .card-body ol {
  margin: 0 0 1.5rem 1.5rem;
  padding: 0;
  font-size: 1.0625rem;
}
.viewer .card-body li,
.content-body .viewer .section .card-body li {
  margin: 0.5rem 0;
  line-height: 1.75;
}
.viewer .card-body li::marker,
.content-body .viewer .section .card-body li::marker {
  color: var(--muted);
}
@media (max-width: 960px) {
  .viewer .intro {
    margin-inline: 0.5rem;
  }
  .viewer { grid-template-columns: 1fr; padding: 1rem; }
  .viewer > .card { 
    grid-column: 1 / -1;
    margin-bottom: 1.5rem;
  }
}

/* =======================================
   READER (definition.html, plain HTML)
   scoped to .content-body .viewer
   ======================================= */
.content {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  min-width: 0;
}
.content-body { 
  padding: 0;
  min-height: 100%;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
  min-width: 0;
}

.content-body .viewer{
  max-width: 1200px;  /* wider for less scrolling, still readable */
  width: 100%;
  box-sizing: border-box;
  min-width: 0;

  display: block;  /* simple block layout for reading */
  line-height: 1.75;
  overflow-x: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
  /* Center content within available space, ensuring it never overflows */
  margin-left: auto;
  margin-right: auto;
  /* Ensure it doesn't overflow on smaller screens - account for padding */
  max-width: min(1200px, calc(100vw - var(--sidebar-w) - 4rem));
  /* Add responsive padding for readability - reduced on medium screens */
  padding-left: clamp(1rem, 1.5rem, 3vw);
  padding-right: clamp(1rem, 1.5rem, 3vw);
}

/* Medium screens: reduce constraints and padding */
@media (min-width: 961px) and (max-width: 1399px) {
  .content-body .viewer {
    /* More generous max-width calculation */
    max-width: min(1200px, calc(100vw - var(--sidebar-w) - 2rem));
    /* Reduced padding on medium screens */
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  
  /* Reduce main padding on medium screens */
  main {
    padding: 0.75rem;
    gap: 0.75rem;
  }
}

/* On wide screens, center the viewer on the entire page, not just the content area */
@media (min-width: 1400px) {
  .content-body .viewer {
    position: relative;
    /* Center on full viewport: left edge at 50vw - 600px (half of 1200px max-width) */
    /* Content area starts at: var(--sidebar-w) + 2rem from viewport left */
    /* So we need: left = (50vw - 600px) - (var(--sidebar-w) + 2rem) */
    left: calc(50vw - 600px - var(--sidebar-w) - 2rem);
    margin-left: 0;
    margin-right: auto;
    /* Ensure it doesn't overflow on the right */
    max-width: min(1200px, calc(100vw - 2 * clamp(1rem, 2.5rem, 5vw)));
  }
  
  /* Prevent viewer from overlapping sidebar - if calculation would shift it too far left, keep it at content start */
  @media (max-width: 1920px) {
    .content-body .viewer {
      left: max(
        calc(50vw - 600px - var(--sidebar-w) - 2rem),
        0 /* Don't shift left past content start */
      );
    }
  }
}

/* Headings */
.content-body .viewer h1{
  font-size: clamp(2rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.content-body .viewer h1.anti-pattern{
  color: #8b1a1a; /* dark-red */
}
@media (prefers-color-scheme: dark) {
  .content-body .viewer h1.anti-pattern{
    color: #dc2626; /* lighter red for dark mode */
  }
}
.content-body .viewer h2{
  font-size: clamp(1.5rem, 3vw, 1.75rem);
  line-height: 1.3;
  margin: 0;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.content-body .viewer h3{ 
  font-size: clamp(1.25rem, 2.5vw, 1.375rem);
  line-height: 1.4;
  margin: 2rem 0 0.75rem;
  font-weight: 600;
  color: var(--text);
}

/* Body text & lists */
.content-body .viewer p{ 
  margin: 0 0 1.25rem;
  font-size: 1.0625rem;
  color: var(--text);
}
.content-body .viewer ul,
.content-body .viewer ol{ 
  margin: 0 0 1.5rem 1.5rem; 
  padding: 0;
  font-size: 1.0625rem;
}
.content-body .viewer li{ 
  margin: 0.5rem 0;
  line-height: 1.75;
}
.content-body .viewer li::marker {
  color: var(--muted);
}

/* Section images and text layout */
.content-body .viewer .section-image {
  flex: 0 0 256px;
  align-self: start;
  max-width: 100%;
}
.content-body .viewer .section-text {
  flex: 1;
  min-width: 0;
}
.content-body .viewer .section-image .hero {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  max-height: 256px;
  border-radius: 0.5rem;
  margin: 0;
  box-sizing: border-box;
  object-fit: contain;
}

/* Section cards - now unified with .viewer > .card above */
.content-body .viewer .section .card-body h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}
.content-body .viewer .section .card-body h3:first-child {
  margin-top: 0;
}
.content-body .viewer .section:last-child,
.viewer > .card:last-child {
  margin-bottom: 0;
}

/* Links */
.content-body .viewer a{
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 45%, transparent);
  transition: border-color 0.15s ease;
}
.content-body .viewer a:hover{ 
  border-bottom-color: var(--accent);
  color: color-mix(in oklab, var(--accent) 85%, black);
}
.content-body .viewer .section a {
  color: var(--accent);
}

/* Code */
.content-body .viewer code{
  background: var(--accent-weak);
  padding: .15rem .35rem;
  border-radius: .4rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.content-body .viewer pre{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: .6rem;
  padding: .9rem 1rem;
  overflow: auto;
  box-shadow: var(--shadow);
}
.content-body .viewer pre code{ background: transparent; padding: 0; }
.content-body .viewer pre::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.content-body .viewer pre::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 4px;
}
.content-body .viewer pre::-webkit-scrollbar-thumb {
  background: color-mix(in oklab, var(--muted) 40%, transparent);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.content-body .viewer pre::-webkit-scrollbar-thumb:hover {
  background: color-mix(in oklab, var(--muted) 60%, transparent);
  background-clip: padding-box;
}
.content-body .viewer pre {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in oklab, var(--muted) 40%, transparent) transparent;
}

/* Tags */
.content-body .viewer .tags{
  display:flex; 
  flex-wrap:wrap; 
  gap:0.5rem; 
  margin: 0 0 2rem 0;
}
.content-body .viewer h1 + .tags {
  margin-top: 0.75rem;
}
.content-body .viewer .tag{
  display:inline-flex; 
  align-items:center;
  font-size:0.875rem; 
  padding:0.375rem 0.875rem;
  background: var(--accent-weak);
  color: var(--accent);
  border:1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  border-radius: 999px;
  font-weight: 500;
}

/* Relation chips */
.content-body .viewer .rels{
  display:flex; 
  flex-wrap:wrap; 
  gap:0.5rem; 
  margin: 0.75rem 0;
}
.content-body .viewer .linklike{
  display:inline-flex; 
  align-items:center; 
  gap:0.5rem;
  padding:0.5rem 1rem;
  border:1px solid; 
  border-radius:999px; 
  cursor:pointer;
  font: inherit; 
  color: inherit;
  outline: none; 
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  padding-left: 2rem;
}
.content-body .viewer .linklike::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  width: 14px;
  height: 14px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}
.content-body .viewer .linklike:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.content-body .viewer .linklike:focus-visible{
  box-shadow: 0 0 0 3px color-mix(in oklab, currentColor 25%, transparent);
}
.content-body .viewer .rel-higher .linklike{
  color:#0f766e; 
  background: color-mix(in oklab, currentColor 12%, transparent); 
  border-color: color-mix(in oklab, currentColor 40%, transparent);
}
.content-body .viewer .rel-higher .linklike::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%230f766e' stroke-width='2.5'%3E%3Cpath d='M12 19V5M5 12l7-7 7 7'/%3E%3C/svg%3E");
}
.content-body .viewer .rel-peer .linklike,
.content-body .viewer .rel-related .linklike{
  color:#3730a3; 
  background: color-mix(in oklab, currentColor 12%, transparent); 
  border-color: color-mix(in oklab, currentColor 40%, transparent);
}
.content-body .viewer .rel-peer .linklike::before,
.content-body .viewer .rel-related .linklike::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%233730a3' stroke-width='2.5'%3E%3Cpath d='M5 12h14M12 5l7 7-7 7'/%3E%3C/svg%3E");
}
.content-body .viewer .rel-lower .linklike{
  color:#721203; 
  background: color-mix(in oklab, currentColor 12%, transparent); 
  border-color: color-mix(in oklab, currentColor 40%, transparent);
}
.content-body .viewer .rel-lower .linklike::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239f1239' stroke-width='2.5'%3E%3Cpath d='M12 5v14M5 12l7 7 7-7'/%3E%3C/svg%3E");
}

.content-body .viewer blockquote{
  margin: 1.5rem 0; 
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--accent);
  background: color-mix(in oklab, var(--accent-weak) 50%, transparent);
  border-radius: 0.5rem;
  font-style: italic;
  color: var(--text);
}
.content-body .viewer blockquote p {
  margin: 0;
}
.content-body .viewer blockquote p + p {
  margin-top: 0.75rem;
}

/* References section styling */
.content-body .viewer .section .card-body p {
  margin: 0.5rem 0;
}
.content-body .viewer .section .card-body p:first-of-type {
  margin-top: 0;
}
.content-body .viewer .section .card-body p:last-of-type {
  margin-bottom: 0;
}
.content-body .viewer hr{
  border:0; 
  height:1px; 
  margin:3rem 0;
  background: linear-gradient(to right, transparent, var(--border), transparent);
}

/* Random pattern button */
.content-body .viewer .random-pattern-section {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.content-body .viewer .random-pattern-btn {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-weak);
  border: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  margin: 0 auto;
  display: inline-block;
}
.content-body .viewer .random-pattern-btn:hover {
  background: color-mix(in oklab, var(--accent-weak) 80%, var(--accent));
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.content-body .viewer .random-pattern-btn:active {
  transform: translateY(0);
}
.content-body .viewer .random-pattern-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (max-width: 960px) {
  nav.primary a { display: none; }
  nav.primary picture { display: flex; }
  main { 
    grid-template-columns: 1fr; 
    padding: 0;
  }
  .viewer { 
    max-width: 100%; 
    padding: 1rem; 
    width: 100%;
  }
  .content {
    justify-content: flex-start;
  }
  .content-body {
    justify-content: flex-start;
  }
  .content-body .viewer { 
    padding: 1.5rem 0.5rem; 
    width: 100%;
    max-width: 100%;
    margin-left: 0;
  }
  .content-body .viewer .section .card-body {
    flex-direction: column;
    gap: 1.5rem;
  }
  .content-body .viewer .section-image {
    order: -1;
    width: 100%;
  }
  .content-body .viewer .section-image .hero {
    max-height: 200px;
  }
  .sidebar {
    top: 54px;
    max-height: calc(100vh - 52px);
  }
}

/* =======================================
   WEB COMPONENT (shadow DOM) — Pattern Card
   Inherits page tokens; no collisions.
   ======================================= */

:host { display:block; contain: content; }

/* Light defaults map to page tokens */
:host{
  /* base */
  --radius: var(--radius, 12px);
  --shadow: var(--shadow, 0 2px 12px rgba(15,23,42,.06));

  --card: var(--surface, #ffffff);
  --text: var(--text, #111827);
  --muted: var(--muted, #6b7280);
  --border: var(--border, #e5e7eb);

  /* surfaces */
  --chip-bg: color-mix(in oklab, var(--accent-weak, #eef2ff) 35%, #ffffff);
  --chip-fg: color-mix(in oklab, var(--text) 75%, #000);

  /* image frame */
  --media-bg: color-mix(in oklab, var(--surface) 90%, #000);
  --media-border: var(--border);

  /* relationship groups */
  --higher-fg: #0f766e;    --higher-bg: #ecfeff; --higher-bd: #99f6e4;
  --peer-fg:   #3730a3;    --peer-bg:   #eef2ff; --peer-bd:   #c7d2fe;
  --lower-fg:  #9f1239;    --lower-bg:  #fff1f2; --lower-bd:  #fecdd3;

  /* pattern tints */
  --tint: transparent;
  --tint-border: transparent;
}

/* Anti/Pattern state via host attribute */
:host([data-type="anti-pattern"]) { --tint: rgba(239,68,68,.08); --tint-border:#ef4444; }
:host([data-type="pattern"])      { --tint: rgba(99,102,241,.06); --tint-border:#6366f1; }

/* Dark tuning picks up page dark tokens automatically */
@media (prefers-color-scheme: dark){
  :host{
    --shadow: var(--shadow, 0 1px 10px rgba(0,0,0,.5));

    --card: var(--surface, #0f172a);
    --text: var(--text, #e5e7eb);
    --muted: var(--muted, #9aa3b2);
    --border: var(--border, #1f2a44);

    --chip-bg:#111a2b;
    --chip-fg:#cbd5e1;

    --media-bg:#0f172a;
    --media-border:#16223a;

    /* relationships tweaked for contrast */
    --higher-fg:#5eead4;  --higher-bg:#072a2a; --higher-bd:#134e4a;
    --peer-fg:#a5b4fc;    --peer-bg:#12163a;  --peer-bd:#2e3b8f;
    --lower-fg:#fecdd3;   --lower-bg:#3a0d1a; --lower-bd:#7f1d1d;
  }
}

/* ---------- Component Structure ---------- */
.card{
  font: 400 16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;
  color: var(--text);
  background:
    linear-gradient(to right, var(--tint), transparent 160px),
    var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--tint-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  max-width: 1100px;
  margin: 1rem auto;
}

/* Media (slotted IMG/SVG) */
.media{
  display:flex; justify-content:center; margin:.25rem 0 1rem;
  background: var(--media-bg); border:1px solid var(--media-border);
  border-radius:10px; padding:.5rem;
}
::slotted([slot="description_image"]),
::slotted([slot="solution_image"]){
  display:block; max-width:100%; height:auto; border-radius:8px;
}
::slotted(svg[slot="description_image"]),
::slotted(svg[slot="solution_image"]){
  height:auto; max-height:60vh;
}

/* Sections */
.section{
  border:1px solid var(--border); border-radius:10px; padding:.85rem; margin-bottom:.8rem; background: var(--card);
}
.section[hidden]{ display:none !important; }
.label{ font-size:.86rem; color: var(--muted); margin-bottom:.45rem; font-weight:600; }
.text ::slotted(*){ margin:0 0 .6rem 0; }
.text ::slotted(p + p){ margin-top:.35rem; }
.text ::slotted(ul){ padding-left:1.2rem; }

/* Tags */
.chips{ display:flex; flex-wrap:wrap; gap:.4rem; }
.chips ::slotted(span){
  background: var(--chip-bg); color: var(--chip-fg); border:1px solid var(--border);
  padding:.15rem .6rem; border-radius:999px; font-size:.82rem; width:fit-content;
}

/* Relationships */
.rels{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.35rem; }
.rels-title{ flex-basis:100%; font-size:.78rem; font-weight:600; color: var(--muted); margin:.25rem 0 .1rem; }

.rels ::slotted(*) {
  display:inline-flex; align-items:center; gap:.35rem;
  text-decoration:none !important; white-space:nowrap; cursor:pointer;
  border-radius:999px; padding:.25rem .65rem .25rem 1.4rem; border:1px solid;
  background-repeat:no-repeat; background-position:.5rem 50%; background-size:10px 10px;
}

/* Use currentColor in the SVG data-uri so it tracks tokens */
.rels.rel-higher{ color: var(--higher-fg); }
.rels.rel-higher ::slotted(*) {
  color: var(--higher-fg); background-color: var(--higher-bg); border-color: var(--higher-bd);
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 19V5M5 12l7-7 7 7'/%3E%3C/svg%3E");
}
.rels.rel-peer{ color: var(--peer-fg); }
.rels.rel-peer ::slotted(*) {
  color: var(--peer-fg); background-color: var(--peer-bg); border-color: var(--peer-bd);
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 12h14M12 5l7 7-7 7'/%3E%3C/svg%3E");
}
.rels.rel-lower{ color: var(--lower-fg); }
.rels.rel-lower ::slotted(*) {
  color: var(--lower-fg); background-color: var(--lower-bg); border-color: var(--lower-bd);
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 5v14M5 12l7 7 7-7'/%3E%3C/svg%3E");
}

/* Tiny badges on slotted title nodes */
::slotted(.anti-pattern)::after{
  content:"\\A Anti-pattern"; white-space:pre; display:block; font-size:.65rem; color:#ef4444; margin-top:.15rem;
}
::slotted(.not-found)::after{
  content:"\\A Not Found"; white-space:pre; display:block; font-size:.65rem; color:#ef4444; margin-top:.15rem; font-style:italic;
}

/* Global helper */
@media (prefers-reduced-motion:reduce){
  *{transition:none!important; animation:none!important}
  .sidebar{ transition: none; }
}