/* ==========================================================================
   Base Styles — chapsoft.com
   Semantic, accessible, AI-readable
   ========================================================================== */

/* ==========================================================================
   Fonts — inline, no @import waterfall
   ========================================================================== */

@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/source-serif-4-var.woff2') format('woff2-variations');
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/jetbrains-mono-var.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   Design Tokens — chapsoft.com
   AI-First Web Design | Four-Audience Architecture
   DEC-20260403-000038-ai_first_web_design
   ========================================================================== */

:root {
  /* Color — Terrain/Geology palette */
  --color-earth: #8B4513;      /* Burnt Umber — headers, links, brand accents */
  --color-slate: #4A5568;      /* Slate — borders, secondary text, quiet authority */
  --color-ochre: #8B5E0A;      /* Ochre/Gold — CTAs, highlights, cairn markers. WCAG AA 5.35:1 on paper */
  --color-paper: #FAF8F5;      /* Warm White — page background, field notebook */
  --color-ink: #1A1A2E;        /* Near Black — body text, ink not screen-black */
  --color-paper-dark: #F0EDE8; /* Slightly darker paper — code blocks, asides */

  /* Typography — Editorial serif + monospace */
  --font-body: 'Source Serif 4', 'Georgia', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Type Scale — Major Third (1.25) */
  --text-xs: 0.8rem;
  --text-sm: 0.889rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.563rem;
  --text-3xl: 1.953rem;
  --text-4xl: 2.441rem;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* Spacing — 4px grid */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-24: 6rem;     /* 96px */

  /* Layout */
  --content-width: 42rem;      /* ~672px — optimal reading line length */
  --page-width: 64rem;         /* ~1024px — max page width */
  --page-padding: var(--space-6);

  /* Borders */
  --border-subtle: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  --border-accent: 2px solid var(--color-ochre);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}

/* Respect motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
  }
}

/* ==========================================================================
   Reset
   ========================================================================== */

/* Reset — minimal, modern */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Document */
html {
  font-size: 100%; /* 16px base — respects user preferences */
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background-color: var(--color-paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography — Strict heading hierarchy
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-ink);
}

h1 { font-size: var(--text-4xl); margin-block-end: var(--space-8); }
h2 { font-size: var(--text-3xl); margin-block: var(--space-8) var(--space-4); }
h3 { font-size: var(--text-2xl); margin-block: var(--space-6) var(--space-3); }
h4 { font-size: var(--text-xl);  margin-block: var(--space-4) var(--space-2); }
h5 { font-size: var(--text-lg);  margin-block: var(--space-4) var(--space-2); }
h6 { font-size: var(--text-base); margin-block: var(--space-4) var(--space-2); font-weight: 600; }

p {
  margin-block-end: var(--space-4);
  max-width: var(--content-width);
}

/* Links */
a {
  color: var(--color-earth);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  transition: color var(--transition-fast);
}

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

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

/* Lists */
ul, ol {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-6);
  max-width: var(--content-width);
}

li { margin-block-end: var(--space-2); }
li::marker { color: var(--color-earth); }

/* Blockquotes */
blockquote {
  border-inline-start: 3px solid var(--color-ochre);
  padding: var(--space-4) var(--space-6);
  margin-block: var(--space-6);
  max-width: var(--content-width);
  font-style: italic;
  color: var(--color-slate);
}

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

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-paper-dark);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-paper-dark);
  padding: var(--space-4) var(--space-6);
  margin-block: var(--space-6);
  border-radius: 4px;
  overflow-x: auto;
  max-width: 100%;
  line-height: var(--leading-relaxed);
}

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

/* Horizontal rule */
hr {
  border: none;
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 25%, transparent);
  margin-block: var(--space-12);
}

/* Time — machine-readable dates, visually styled */
time {
  font-size: var(--text-sm);
  color: var(--color-slate);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

figure {
  margin-block: var(--space-6);
}

figcaption {
  font-size: var(--text-sm);
  color: var(--color-slate);
  margin-block-start: var(--space-2);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-6);
  font-size: var(--text-sm);
}

th, td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
}

th {
  font-weight: 600;
  color: var(--color-earth);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.site-header {
  padding: var(--space-6) var(--page-padding);
  max-width: var(--page-width);
  margin-inline: auto;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-4);
}

.wayfinder-brand {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
  margin-inline-end: auto;
}

.wayfinder-brand:hover {
  color: var(--color-earth);
}

.site-nav a {
  font-size: var(--text-sm);
  color: var(--color-slate);
  text-decoration: none;
}

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

.site-nav a[aria-current="page"] {
  color: var(--color-earth);
  font-weight: 600;
}

main {
  padding: var(--space-8) var(--page-padding);
  max-width: var(--page-width);
  margin-inline: auto;
}

.site-footer {
  padding: var(--space-8) var(--page-padding);
  max-width: var(--page-width);
  margin-inline: auto;
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.footer-separator {
  color: var(--color-ochre);
  margin-inline-end: var(--space-1);
}

/* ==========================================================================
   Skip Link — Accessibility
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-ink);
  color: var(--color-paper);
  z-index: 100;
  font-size: var(--text-sm);
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

/* ==========================================================================
   Page Hero
   ========================================================================== */

.page-hero {
  margin-block-end: var(--space-12);
}

.page-hero h1 {
  font-size: var(--text-4xl);
  max-width: var(--page-width);
}

.page-hero .page-hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-slate);
  max-width: var(--content-width);
  line-height: var(--leading-normal);
}

/* ==========================================================================
   GEO-Optimized Content Blocks
   ========================================================================== */

/* Quotable claim — designed for AI citation extraction */
.geo-quotable {
  font-size: var(--text-lg);
  font-weight: 600;
  border-inline-start: 3px solid var(--color-earth);
  padding: var(--space-3) var(--space-6);
  margin-block: var(--space-6);
  max-width: var(--content-width);
}

/* Cited statistic — AI summarizers extract these preferentially */
.geo-statistic {
  font-weight: 600;
}

.geo-statistic cite {
  font-weight: 400;
  font-style: normal;
  color: var(--color-earth);
  font-size: inherit;
}

.cite-link {
  color: var(--color-earth);
  text-decoration: none;
  font-weight: 400;
}

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

.cite-link sup {
  font-size: var(--text-xs);
  margin-inline-start: 1px;
}

/* Audience signal — "who this is for" (GEO checklist #6) */
.geo-audience-signal {
  font-size: var(--text-base);
  color: var(--color-slate);
  border-inline-start: 2px solid var(--color-ochre);
  padding-inline-start: var(--space-4);
  margin-block-end: var(--space-8);
  max-width: var(--content-width);
}

/* ==========================================================================
   Persona CTAs
   ========================================================================== */

.persona-cta {
  padding: var(--space-6);
  border: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  border-radius: 4px;
  margin-block: var(--space-8);
  max-width: var(--content-width);
}

.persona-cta h3 {
  margin-block-start: 0;
}

/* ==========================================================================
   Home Paths — Two-column fork on desktop, stacked on mobile
   ========================================================================== */

.home-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  max-width: var(--page-width);
}

/* ==========================================================================
   Ground Truth Offering
   ========================================================================== */

.ground-truth-offering {
  margin-block: var(--space-8);
}

.ground-truth-claim {
  font-size: var(--text-lg);
  max-width: var(--content-width);
}

.trigger-list {
  list-style: none;
  padding: 0;
  max-width: var(--content-width);
}

.trigger-list li {
  padding: var(--space-3) 0;
  padding-inline-start: var(--space-6);
  position: relative;
  border-bottom: 1px solid color-mix(in srgb, var(--color-slate) 12%, transparent);
}

.trigger-list li::before {
  content: "▸";
  color: var(--color-earth);
  position: absolute;
  left: 0;
  font-weight: 700;
}

.trigger-list li:last-child {
  border-bottom: none;
}

.process-steps {
  max-width: var(--content-width);
  padding-inline-start: var(--space-6);
  margin-block-end: var(--space-6);
}

.process-steps li {
  padding: var(--space-3) 0;
}

.process-steps li::marker {
  color: var(--color-earth);
  font-weight: 700;
}

.ground-truth-proof {
  background-color: var(--color-paper-dark);
  padding: var(--space-6);
  border-radius: 4px;
  margin-block: var(--space-6);
  max-width: var(--content-width);
}

details.ground-truth-proof {
  margin-block: var(--space-6);
}

details.ground-truth-proof summary {
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-paper-dark);
  border-radius: 4px;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  list-style: none;
}

details.ground-truth-proof summary::-webkit-details-marker {
  display: none;
}

details.ground-truth-proof summary::before {
  content: "▸ ";
  color: var(--color-earth);
  margin-inline-end: var(--space-2);
}

details.ground-truth-proof[open] summary::before {
  content: "▾ ";
}

details.ground-truth-proof[open] summary {
  border-radius: 4px 4px 0 0;
  margin-block-end: 0;
}

details.ground-truth-proof summary:hover {
  color: var(--color-earth);
}

details.ground-truth-proof > *:not(summary) {
  padding-inline: var(--space-4);
}

.ground-truth-proof cite {
  display: block;
  margin-block-start: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-slate);
  font-style: normal;
}

.case-summary {
  background-color: var(--color-paper);
  border-inline-start: 3px solid var(--color-earth);
  padding: var(--space-4);
  margin-block: var(--space-4);
  font-size: 0.889rem;
}

.case-summary div {
  display: flex;
  gap: var(--space-3);
  margin-block-end: var(--space-2);
}

.case-summary div:last-child {
  margin-block-end: 0;
}

.case-summary dt {
  font-weight: 700;
  min-width: 7rem;
  flex-shrink: 0;
  color: var(--color-earth-dark, #5C3D0E);
}

.case-summary dd {
  margin: 0;
}

.testimonials {
  margin-block: var(--space-8);
}

.testimonial {
  border-inline-start: 3px solid var(--color-earth);
  padding: var(--space-4) var(--space-6);
  margin-block-end: var(--space-6);
  background-color: var(--color-paper-dark);
  border-radius: 0 4px 4px 0;
}

.testimonial p {
  font-style: italic;
  margin-block-end: var(--space-3);
}

.testimonial footer {
  font-size: 0.889rem;
}

.testimonial cite {
  font-style: normal;
  display: block;
}

.testimonial-context {
  display: block;
  font-size: 0.8rem;
  color: var(--color-slate);
  margin-block-start: var(--space-1);
}

@media (max-width: 640px) {
  .case-summary div {
    flex-direction: column;
    gap: var(--space-1);
  }
  .case-summary dt {
    min-width: unset;
  }
}

.ground-truth-findings {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-4);
  font-size: var(--text-sm);
}

.ground-truth-findings th,
.ground-truth-findings td {
  text-align: left;
  padding: var(--space-3);
  border-bottom: 1px solid color-mix(in srgb, var(--color-slate) 15%, transparent);
  vertical-align: top;
}

.ground-truth-findings th {
  font-weight: 600;
  white-space: nowrap;
}

.ground-truth-findings td:last-child {
  font-weight: 600;
  white-space: nowrap;
}

.ground-truth-deliverable {
  margin-block-end: var(--space-4);
}

.ground-truth-deliverable dt {
  font-weight: 600;
  color: var(--color-earth);
}

.ground-truth-deliverable dd {
  margin-inline-start: 0;
  color: var(--color-slate);
}

.ground-truth-intake {
  margin-block-start: var(--space-8);
}

.subscribe-form {
  display: flex;
  gap: var(--space-3);
  max-width: 28rem;
  margin-block-start: var(--space-4);
}

.subscribe-form input[type="email"] {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid color-mix(in srgb, var(--color-slate) 30%, transparent);
  border-radius: 4px;
  background: var(--color-paper);
  color: var(--color-paper-dark-text, #1A1A2E);
}

.subscribe-form input[type="email"]::placeholder {
  color: var(--color-slate);
}

.subscribe-form input[type="email"]:focus {
  outline: 2px solid var(--color-earth);
  outline-offset: 1px;
  border-color: var(--color-earth);
}

.subscribe-form button {
  padding: var(--space-3) var(--space-6);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  background: var(--color-earth);
  color: var(--color-paper);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}

.subscribe-form button:hover {
  background: var(--color-earth-dark, #5C3D0E);
}

.subscribe-rss {
  margin-block-start: var(--space-3);
  font-size: 0.889rem;
  color: var(--color-slate);
}

.rss-feed-list {
  list-style: none;
  padding-inline-start: 0;
  margin-block-start: var(--space-3);
}

.rss-feed-list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding-block: var(--space-2);
}

.rss-feed-list svg {
  flex-shrink: 0;
  position: relative;
  top: 2px;
  color: var(--color-ochre);
}

@media (max-width: 640px) {
  .subscribe-form {
    flex-direction: column;
  }
}

/* ==========================================================================
   Dispatches & Cairns
   ========================================================================== */

.dispatch {
  margin-block-end: var(--space-12);
}

.dispatch-meta {
  font-size: var(--text-sm);
  color: var(--color-slate);
  margin-block-end: var(--space-4);
}

.dispatch-byline {
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.dispatch-body {
  max-width: var(--content-width);
}

.dispatch-forward-pointer {
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.dispatch-nav {
  display: flex;
  justify-content: space-between;
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  font-size: var(--text-sm);
  color: var(--color-slate);
  max-width: var(--content-width);
}

.dispatch-nav__next {
  text-align: end;
}

.dispatch-footnotes {
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.dispatch-footnotes h2 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-block-end: var(--space-3);
}

.dispatch-footnotes ol {
  padding-inline-start: 1.5rem;
}

.dispatch-footnotes li {
  margin-block-end: var(--space-3);
  line-height: 1.6;
}

.cairn-entry {
  margin-block-end: var(--space-6);
  padding-block-end: var(--space-6);
  border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 10%, transparent);
}

.cairn-datestamp {
  /* Visually hidden — dates preserved in <time datetime> for Schema.org/RSS.
     Clustered same-day dates made the page feel like a content dump. */
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.cairn-tags {
  display: flex;
  gap: var(--space-2);
  margin-block-start: var(--space-2);
}

.cairn-tags span {
  font-size: var(--text-xs);
  color: var(--color-earth);
  background-color: color-mix(in srgb, var(--color-earth) 8%, transparent);
  padding: var(--space-1) var(--space-2);
  border-radius: 3px;
}

/* ==========================================================================
   Style Guide Components
   ========================================================================== */

.color-swatch {
  display: inline-block;
  width: 3rem;
  height: 1.5rem;
  border-radius: 3px;
  vertical-align: middle;
}

.color-swatch--light {
  border: 1px solid var(--color-slate);
}

.type-weight-regular { font-weight: 400; }
.type-weight-semibold { font-weight: 600; }
.type-weight-bold { font-weight: 700; }

/* ==========================================================================
   Dispatch Compare View
   ========================================================================== */

.dispatch-compare {
  margin-block-start: var(--space-12);
  border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  padding-block-start: var(--space-4);
}

.dispatch-compare summary {
  font-size: var(--text-sm);
  color: var(--color-earth);
  cursor: pointer;
  padding: var(--space-2) 0;
  min-height: 44px;
  display: flex;
  align-items: center;
  list-style: none; /* remove default triangle */
}

.dispatch-compare summary::-webkit-details-marker {
  display: none; /* Safari */
}

.dispatch-compare__icon::before {
  content: "▸ ";
  font-size: var(--text-lg);
  transition: transform var(--transition-fast);
  display: inline-block;
  margin-inline-end: var(--space-2);
}

.dispatch-compare[open] .dispatch-compare__icon::before {
  content: "▾ ";
}

.dispatch-compare summary:hover {
  color: var(--color-ochre);
}

.dispatch-compare__intro {
  max-width: var(--content-width);
  margin-block: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.dispatch-compare__intro a {
  color: var(--color-earth);
}

.compare-tabs {
  display: none; /* hidden on desktop — columns visible */
}

.compare-tabs [role="tab"] {
  background: none;
  border: none;
  border-block-end: 2px solid transparent;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-slate);
  cursor: pointer;
  min-height: 44px;
}

.compare-tabs [role="tab"][aria-selected="true"] {
  color: var(--color-earth);
  border-color: var(--color-earth);
  font-weight: 600;
}

.compare-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.compare-column {
  border-block-start: 3px solid var(--color-earth);
  padding-block-start: var(--space-4);
}

.compare-column.forged {
  border-color: var(--color-ochre);
}

.compare-column h2 {
  font-size: var(--text-lg);
  margin-block: 0 var(--space-2);
}

.version-note {
  font-size: var(--text-sm);
  color: var(--color-slate);
  margin-block-end: var(--space-6);
}

/* ==========================================================================
   FAQ Sections — Collapsible Q&A pairs
   ========================================================================== */

.faq-section {
  margin-block: var(--space-8);
  max-width: var(--content-width);
}

.faq-item {
  margin-block-end: var(--space-3);
  border: 1px solid color-mix(in srgb, var(--color-slate) 15%, transparent);
  border-radius: 4px;
  background-color: var(--color-paper-dark);
}

.faq-item summary {
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "\25B8 ";
  color: var(--color-earth);
  margin-inline-end: var(--space-2);
  flex-shrink: 0;
}

.faq-item[open] summary::before {
  content: "\25BE ";
}

.faq-item summary:hover {
  color: var(--color-earth);
}

.faq-item > p {
  padding: 0 var(--space-4) var(--space-4);
  margin-block-end: 0;
  color: var(--color-slate);
}

/* ==========================================================================
   Responsive — Mobile-first adjustments
   ========================================================================== */

/* Nav: ensure touch targets >= 44px on all links */
.site-nav a:not(.wayfinder-brand) {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;       /* hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
  color: var(--color-ink);
  font-size: var(--text-xl);
  line-height: 1;
}

.nav-links {
  display: contents;   /* desktop: links flow normally in the flex nav */
}

/* noscript fallback: show nav links even without JS on mobile */
.noscript-nav-open {
  display: flex !important;
  flex-direction: column;
}

/* Small screens */
@media (max-width: 640px) {
  :root {
    --text-4xl: 1.953rem;
    --text-3xl: 1.563rem;
    --page-padding: var(--space-4);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0;
  }

  .wayfinder-brand {
    margin-inline-end: auto;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    padding-block-start: var(--space-3);
    border-block-start: 1px solid color-mix(in srgb, var(--color-slate) 15%, transparent);
    margin-block-start: var(--space-3);
  }

  .nav-links.nav-links--open {
    display: flex;
  }

  .nav-links a {
    padding: var(--space-3) 0;
    font-size: var(--text-base);
    border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 8%, transparent);
  }

  .nav-links a:last-child {
    border-block-end: none;
  }

  /* Tables: horizontal scroll wrapper */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .ground-truth-proof {
    padding: var(--space-4);
  }

  .persona-cta {
    padding: var(--space-4);
  }

  pre {
    padding: var(--space-3);
    font-size: var(--text-xs);
  }

  /* Home paths: single column on mobile */
  .home-paths {
    display: block;
  }

  /* Compare: tabs on mobile, one column at a time */
  .compare-tabs {
    display: flex;
    gap: var(--space-2);
    margin-block-end: var(--space-4);
    border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  }

  .compare-columns {
    grid-template-columns: 1fr;
  }

  .compare-column.forged {
    display: none; /* JS shows the active tab */
  }

  /* Ensure dl/dt/dd don't overflow */
  dl {
    max-width: 100%;
  }

  /* Footer contact: prevent overflow */
  .site-footer address {
    word-break: break-word;
  }
}

/* Medium screens */
@media (min-width: 641px) and (max-width: 1023px) {
  :root {
    --page-padding: var(--space-6);
  }
}

/* ==========================================================================
   Selected Clients — Multi-column lists
   ========================================================================== */

/* Trail photo — constrained to content width, not full-bleed hero */
.trail-photo {
  max-width: var(--content-width);
}

.client-list {
  columns: 1;
  column-gap: var(--space-8);
  max-width: var(--page-width);
}

.client-group {
  break-inside: avoid;
  margin-block-end: var(--space-6);
}

.client-group h3 {
  margin-block-start: 0;
}

.client-list ul {
  max-width: none;
}

.client-desc {
  color: var(--color-slate);
  font-size: 0.833rem;
}

@media (min-width: 641px) {
  .client-list {
    columns: 2;
  }
}

@media (min-width: 1024px) {
  .client-list {
    columns: 2;
  }
}

/* ==========================================================================
   Trust Strip — Homepage + Ground Truth
   ========================================================================== */

.trust-strip {
  border-block: 1px solid color-mix(in srgb, var(--color-slate) 20%, transparent);
  padding: var(--space-4) 0;
  margin-block-end: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-slate);
  max-width: var(--content-width);
}

.trust-strip p {
  max-width: none;
}

.trust-strip strong {
  color: var(--color-earth);
}

.trust-strip a {
  display: inline-block;
  margin-inline-start: var(--space-3);
  white-space: nowrap;
}

/* Large screens */
@media (min-width: 1024px) {
  :root {
    --page-padding: var(--space-8);
  }
}