/* ==========================================================================
   CASA Media shared stylesheet: site.css
   Handwritten vanilla CSS. No Tailwind, no CDN, no build step.
   Structure: fonts -> tokens -> reset -> base type -> layout -> components
              -> a11y/perf -> media queries -> canonical template block.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Self-hosted fonts.
   Fonts are self-hosted: every family is served as local woff2 from /fonts,
   so no third-party request leaves the visitor's browser. Only the six named
   weights load; never synthesise weights (no 700).
   -------------------------------------------------------------------------- */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-600.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-400.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-500.woff2") format("woff2");
}
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/fraunces-600.woff2") format("woff2");
}

/* --------------------------------------------------------------------------
   Design tokens (single source of truth; never hard-code these values).
   -------------------------------------------------------------------------- */
:root {
  /* Color: warm light theme (CASA Media, 2026-09-29). */
  --bg: #F4EFE6;          /* cream page */
  --bg-raised: #FBF8F2;   /* cards, form fields */
  --text-1: #1C1915;      /* headings */
  --text-2: #3D372F;      /* body */
  --text-3: #5E564B;      /* captions, eyebrows */
  --text-min: #6E6559;    /* fine print floor */
  --line-strong: #8A8073; /* input borders, UI outlines */
  --line-1: #D9D0C1;      /* hairlines (decorative) */
  --line-2: #E8E1D5;      /* background grid (decorative) */
  --accent: #9C4221;      /* terracotta: links, focus, hover */

  /* Type families */
  --font-sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Type scale — ratio 1.25, base 16px */
  --step--1: 0.8rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.563rem;
  --step-3: 1.953rem;
  --step-4: 2.441rem;
  --step-5: 3.052rem;

  /* Spacing — 4px base */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Measure */
  --measure: 65ch;
}

/* --------------------------------------------------------------------------
   Modern minimal reset.
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  /* Native controls, scrollbars, and autofill follow the light UI. */
  color-scheme: light;
}
body {
  min-height: 100vh;
  overflow-x: hidden;
  overscroll-behavior-y: none;
}

/* Pointer ergonomics: remove tap delay and the grey iOS tap flash on the
   interactive controls; keep the designed focus ring as the only affordance. */
a, button, summary, label,
.nav-toggle, .nav-close,
input, textarea, select {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
img, svg, video { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
:where(h1, h2, h3, h4, p) { overflow-wrap: break-word; }

/* --------------------------------------------------------------------------
   Base typography.
   -------------------------------------------------------------------------- */
body {
  background: var(--bg);
  color: var(--text-2);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.15;
  color: var(--text-1);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1, h2 { font-family: var(--font-display); }
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }

p { max-width: var(--measure); }
strong, b { font-weight: 500; color: var(--text-1); }

/* Inline text links carry the accent underline. */
.prose a,
a.text-link {
  color: var(--text-1);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.2em;
  transition: color 0.15s ease-out;
}
.prose a:hover,
a.text-link:hover { color: var(--accent); }

/* Multi-paragraph prose blocks: space siblings, with more room above subheads. */
.prose > * + * { margin-top: var(--space-4); }
.prose > * + h3 { margin-top: var(--space-6); }

/* Lede — one-sentence intro under an H1. */
.lede {
  font-size: var(--step-1);
  color: var(--text-2);
  max-width: var(--measure);
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   Layout primitives.
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1400px;
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-8));
}

/* Section rhythm — deliberately varied, not a single uniform block. */
.section { padding-block: var(--space-8); }
.section + .section { border-top: 1px solid var(--line-1); }

/* Single-column hero. */
.hero { padding-block: var(--space-8) var(--space-7); }
.hero-headline {
  font-size: clamp(2.2rem, 5.5vw, 3.052rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: var(--step-1);
  color: var(--text-2);
  max-width: 46ch;
  margin-top: var(--space-5);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

/* Generic auto-fit grid for service and work lists. */
.grid-2 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* --------------------------------------------------------------------------
   Skip link — visually hidden until focused.
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 200;
  padding: var(--space-3) var(--space-4);
  background: var(--text-1);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  transform: translateY(calc(-60px - var(--space-4)));
  transition: transform 0.15s ease-out;
}
.skip-link:focus { transform: translateY(0); }

/* Skip-link / in-page anchor target. tabindex="-1" (set in markup) lets #main
   receive focus; scroll-margin-top clears the 64px sticky header so the jumped-to
   content is not hidden beneath it. No focus ring on the container itself. */
#main { scroll-margin-top: calc(64px + var(--space-4)); }
#main:focus { outline: none; }
:where(h1, h2, h3, h4) { scroll-margin-top: calc(64px + var(--space-4)); }
section[id] { scroll-margin-top: calc(64px + var(--space-4)); }

/* --------------------------------------------------------------------------
   Sticky header + navigation.
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--line-1);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 64px;
}
.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--step-0);
  letter-spacing: 0.12em;
  color: var(--text-1);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  transition: color 0.15s ease-out;
}
.nav-list a:hover { color: var(--text-1); }
.nav-list a[aria-current="page"] { color: var(--text-1); }

/* Mobile toggle button — hidden on desktop. */
.nav-toggle,
.nav-close {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--text-1);
}

/* Mobile full-viewport overlay sheet. */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  /* Pad past the notch / home indicator on devices with display cutouts,
     and keep overscroll from chaining to the scroll-locked body on iOS. */
  padding: calc(var(--space-5) + env(safe-area-inset-top)) calc(var(--space-5) + env(safe-area-inset-right)) calc(var(--space-5) + env(safe-area-inset-bottom)) calc(var(--space-5) + env(safe-area-inset-left));
  overscroll-behavior: contain;
}
.mobile-nav[hidden] { display: none; }
.mobile-nav-top {
  display: flex;
  justify-content: flex-end;
}
.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.mobile-nav-list a {
  display: flex;
  align-items: center;
  min-height: 52px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-2);
  border-bottom: 1px solid var(--line-1);
}
.mobile-nav-list a[aria-current="page"]:not(.btn-primary) { color: var(--text-1); }
.mobile-nav-list .btn-primary {
  margin-top: var(--space-5);
  color: var(--bg);
  text-transform: none;
  letter-spacing: normal;
  border-bottom: none;
}
.mobile-nav-list .btn-primary[aria-current="page"] { color: var(--bg); }

/* Scroll-lock applied to <body> while the sheet is open. */
body.nav-open { overflow: hidden; }

/* --------------------------------------------------------------------------
   Buttons.
   The one CTA label is "Request a quote" -> sentence case per copy policy;
   no uppercase transform on buttons.
   -------------------------------------------------------------------------- */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--step-0);
  line-height: 1.2;
  text-align: center;
  transition: background-color 0.15s ease-out, color 0.15s ease-out,
    border-color 0.15s ease-out;
}
.btn-primary {
  background: var(--text-1);
  color: var(--bg);
  border: 1px solid var(--text-1);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: transparent;
  color: var(--text-1);
}
.btn-secondary {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--line-strong);
}
.btn-secondary:hover { border-color: var(--text-1); }

/* Shared icon sizing; icons inherit color from surrounding text. */
.icon { width: 1.5rem; height: 1.5rem; display: inline-block; vertical-align: middle; }

/* --------------------------------------------------------------------------
   Eyebrow — the single signature motif.
   Format "SECTION NAME" (no numbers on Media), mono uppercase, above a full-width hairline.
   -------------------------------------------------------------------------- */
.eyebrow {
  position: relative;
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-6);
}
.eyebrow::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line-strong);
  transform: scaleX(var(--rule-scale, 1));
  transform-origin: left;
}

/* --------------------------------------------------------------------------
   Service and case-study section structures.
   -------------------------------------------------------------------------- */
.service,
.scenario {
  padding-block: var(--space-7);
}
.service + .service,
.scenario + .scenario { border-top: 1px solid var(--line-1); }

.service h3,
.scenario h3 { margin-bottom: var(--space-4); }

.service-sub {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin: var(--space-5) 0 var(--space-3);
}
.service-list { margin-top: var(--space-2); }
.service-list li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  color: var(--text-2);
  max-width: var(--measure);
}
.service-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--text-3);
}
.built-for {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--text-3);
  margin-top: var(--space-4);
}

/* Add-on cards (home) and selected-work teasers. Task 8 animates both. */
.card {
  padding: var(--space-5);
  background: var(--bg-raised);
  border: 1px solid var(--line-1);
}
.work-item {
  padding-top: var(--space-4);
  border-top: 1px solid var(--line-strong);
}
.card h3,
.work-item h3 { margin-bottom: var(--space-3); }
.work-item h3 a { transition: color 0.15s ease-out; }
.work-item h3 a:hover { color: var(--accent); }
.work-item p,
.card p { color: var(--text-2); }
/* Work-page case studies are both: keep the case-study rhythm and one rule weight. */
.scenario.work-item {
  padding-top: var(--space-7);
  border-top-color: var(--line-strong);
}

/* Follow-on text link under a grid or section body. */
.section-link { margin-top: var(--space-6); }
.section h2 + .grid-2 { margin-top: var(--space-6); }

/* Section disclaimer: body type, not fine print. */
.disclaimer {
  color: var(--text-2);
  max-width: var(--measure);
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   CTA band — repeated at the foot of every page.
   -------------------------------------------------------------------------- */
.cta-band {
  padding-block: var(--space-8);
  border-top: 1px solid var(--line-1);
}
.cta-band p {
  font-size: var(--step-2);
  color: var(--text-1);
  max-width: 40ch;
  margin-bottom: var(--space-6);
}

/* Risk-reversal microcopy placed directly beneath a CTA button. */
.cta-note {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--text-3);
  margin-top: var(--space-3);
}

/* Sticky mobile CTA: keeps the primary action in reach during the long
   homepage scroll where the header CTA is hidden in the menu sheet. Shown
   only on the mobile breakpoint (see media query). */
.sticky-cta {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  background: var(--bg);
  border-top: 1px solid var(--line-1);
}
.sticky-cta .btn-primary { width: 100%; }

/* --------------------------------------------------------------------------
   Forms (contact.html only).
   -------------------------------------------------------------------------- */
.form { max-width: 560px; }
.field { margin-bottom: var(--space-5); }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-2);
  margin-bottom: var(--space-2);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-raised);
  color: var(--text-1);
  border: 1px solid var(--line-strong);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  transition: border-color 0.15s ease-out;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder { color: var(--text-min); }
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--accent);
}
.field input:focus:not(:focus-visible),
.field textarea:focus:not(:focus-visible),
.field select:focus:not(:focus-visible) {
  outline: none;
}
/* Error state must read as "failed", not "focused". Focus is a 1px accent
   border; an invalid field gets a heavier 2px border plus a solid inset
   left bar, so the two states are distinct without relying on hue alone. */
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-width: 2px;
  border-color: var(--text-1);
  box-shadow: inset 3px 0 0 0 var(--accent);
}

.field-error {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--text-1);
  margin-top: var(--space-2);
}
/* "Error:" prefix so the message reads as a failure, not a hint. */
.field-error:not(:empty)::before {
  content: "Error: ";
  color: var(--accent);
  font-weight: 500;
}

/* Success confirmation — replaces the form after a completed submit.
   Hidden by default. Revealed by JS (adds .is-confirmed on .form-wrap) or,
   without JS, by the #confirmation :target from the Netlify redirect URL
   (contact.html?success=1#confirmation). */
.form-confirmation {
  display: none;
  max-width: 560px;
  padding: var(--space-6);
  border: 1px solid var(--line-strong);
}
.form-confirmation p { color: var(--text-2); }
.form-wrap.is-confirmed .form,
.form-wrap.is-confirmed .form-fallback { display: none; }
.form-wrap.is-confirmed .form-confirmation { display: block; }
/* No-JS fallback: the redirect hash makes the block the :target. */
.form-confirmation:target { display: block; }
.form-wrap:has(.form-confirmation:target) .form,
.form-wrap:has(.form-confirmation:target) .form-fallback { display: none; }

/* "What happens next" three-step strip. */
.steps {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: var(--space-6);
}
.step-num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: var(--space-2);
}

/* --------------------------------------------------------------------------
   FAQ — details / summary.
   -------------------------------------------------------------------------- */
.faq details {
  border-top: 1px solid var(--line-1);
  padding: var(--space-4) 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--line-1); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 44px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--step-1);
  color: var(--text-1);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--text-3);
}
.faq details[open] summary::after { content: "–"; }
.faq details p {
  margin-top: var(--space-3);
  color: var(--text-2);
}

/* --------------------------------------------------------------------------
   Footer.
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line-1);
  padding-block: var(--space-7);
  margin-top: var(--space-8);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}
.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  transition: color 0.15s ease-out;
}
.footer-nav a:hover { color: var(--text-1); }
.footer-email {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text-1);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.2em;
}
.footer-email:hover { color: var(--accent); }
.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--text-min);
}

/* --------------------------------------------------------------------------
   Page-specific: home hero (index.html).
   -------------------------------------------------------------------------- */
.hero { position: relative; }
.hero > .container { position: relative; z-index: 1; }
.hero-copy { max-width: 40rem; }

/* --------------------------------------------------------------------------
   Page-specific: contact.html.
   -------------------------------------------------------------------------- */
.contact-heading { margin-bottom: var(--space-5); }
.form-fallback { margin-top: var(--space-6); }

/* Lenis smooth-scroll support. */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }
/* While Lenis holds the scroll lock on <html>, body's overflow (overflow-x
   above, nav-open lock) no longer propagates to the viewport, so body would
   become its own scroll container: the sticky header snaps to page top and
   closing the menu (focus back to the toggle) jumps the page to y=0. */
html.lenis-stopped body { overflow: visible; }

/* --------------------------------------------------------------------------
   Accessibility & performance non-negotiables.
   -------------------------------------------------------------------------- */
/* Visible focus ring on every interactive element; never removed without a
   replacement of equal or greater clarity. */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   Responsive — clean max-width blocks. No horizontal overflow at 375px.
   -------------------------------------------------------------------------- */
/* Below 820px: switch header to mobile toggle + overlay sheet. */
@media (max-width: 820px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-close { display: inline-flex; }

  /* Reveal the sticky mobile CTA and reserve matching space at the foot of the
     page so the fixed bar never covers the footer at full scroll. */
  .sticky-cta { display: block; }
  body:has(.sticky-cta) { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--step-3); }
  h2 { font-size: var(--step-2); }
  .lede { font-size: var(--step-0); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-primary,
  .btn-secondary { width: 100%; }
  .cta-band p { font-size: var(--step-1); }
}

/* ==========================================================================
   CANONICAL HEADER/FOOTER TEMPLATE: copy verbatim into every CASA Media page.
   Rules for page builders:
   - Set aria-current="page" on the current page's link in BOTH the desktop
     and mobile nav (remove it from the others).
   - Home link/logo -> index.html. Nav order is fixed: Home, Services, Work,
     About, then the CTA button. Never rename these labels.
   - The CTA "Request a quote" stays sentence case and links to contact.html.
   - #main must be the id of the page's <main> so the skip link lands there.
   - media@casa-labs.com must match in footer text AND mailto href.
   - Scripts load at the end of <body> with the shared ?v= cache-bust.

   ---------- HEADER (place immediately after <body>) ----------
   <a class="skip-link" href="#main">Skip to content</a>
   <header class="site-header">
     <div class="container header-inner">
       <a class="logo" href="index.html">CASA MEDIA</a>
       <nav class="nav-desktop" aria-label="Primary">
         <ul class="nav-list">
           <li><a href="index.html" aria-current="page">Home</a></li>
           <li><a href="services.html">Services</a></li>
           <li><a href="work.html">Work</a></li>
           <li><a href="about.html">About</a></li>
         </ul>
         <a class="btn-primary" href="contact.html">Request a quote</a>
       </nav>
       <button class="nav-toggle" type="button" aria-label="Open menu"
               aria-expanded="false" aria-controls="mobileNav">
         <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
              stroke="currentColor" stroke-width="1.5" aria-hidden="true"
              focusable="false">
           <path d="M4 7h16M4 12h16M4 17h16"/>
         </svg>
       </button>
     </div>
   </header>
   <div class="mobile-nav" id="mobileNav" hidden>
     <div class="mobile-nav-top">
       <button class="nav-close" type="button" aria-label="Close menu">
         <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
              stroke="currentColor" stroke-width="1.5" aria-hidden="true"
              focusable="false">
           <path d="M6 6l12 12M18 6L6 18"/>
         </svg>
       </button>
     </div>
     <nav class="mobile-nav-list" aria-label="Mobile">
       <a href="index.html" aria-current="page">Home</a>
       <a href="services.html">Services</a>
       <a href="work.html">Work</a>
       <a href="about.html">About</a>
       <a class="btn-primary" href="contact.html">Request a quote</a>
     </nav>
   </div>

   ---------- FOOTER (place immediately before </body>) ----------
   <footer class="site-footer">
     <div class="container footer-inner">
       <nav class="footer-nav" aria-label="Footer">
         <ul>
           <li><a href="index.html">Home</a></li>
           <li><a href="services.html">Services</a></li>
           <li><a href="work.html">Work</a></li>
           <li><a href="about.html">About</a></li>
           <li><a href="contact.html">Contact</a></li>
           <li><a href="privacy.html">Privacy</a></li>
         </ul>
       </nav>
       <a class="footer-email" href="mailto:media@casa-labs.com">media@casa-labs.com</a>
       <p class="footer-meta">CASA Media. Websites built like systems, not brochures.</p>
     </div>
   </footer>
   <script src="js/nav.js?v=2026-09-29a" defer></script>
   ========================================================================== */