/*
 * Staxmark™ site stylesheet — Slatework theme.
 *
 * The :root block defines the canonical `--zb-*` CSS custom properties
 * for this business. The homepage inline <style> emits an identical
 * :root block (it supersedes this one per the build brief). Every
 * subpage (blog, contact, thanks) loads this file and inherits these
 * values directly.
 *
 * Slatework palette — composed and credible — professional B2B services.
 */
:root {
  --zb-color-ink: #1e2024;
  --zb-color-canvas: #f6f7f8;
  --zb-color-surface: #ffffff;
  --zb-color-accent: #306fd0;
  --zb-color-accent-text: #1b3e74;
  --zb-color-secondary: #85291e;
  --zb-color-section-tint: #e9ebed;
  --zb-color-border: #d7dadf;
  --zb-cta-fill: #306fd0;
  --zb-cta-text: #ffffff;
  --zb-font-headline: 'Sora', sans-serif;
  --zb-font-body: 'IBM Plex Sans', sans-serif;

  --zb-space-1: 0.5rem;
  --zb-space-2: 1rem;
  --zb-space-3: 2rem;
  --zb-space-4: 4rem;
  --zb-radius: 0.75rem;
  --zb-maxw: 64rem;
}

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

/* ── Accessibility: skip link ─────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateY(-100%);
  background: var(--zb-color-surface);
  color: var(--zb-color-ink);
  font-family: var(--zb-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 var(--zb-radius) 0;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0%);
}

/* ── Accessibility: visually-hidden (screen-reader-only) text ───────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Accessibility: visible focus indicator on every interactive
   element, at a contrast that clears 3:1 against its own background.
   Dark-background bands (ink) flip the outline to white. ───────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--zb-color-ink);
  outline-offset: 2px;
  border-radius: 2px;
}

.site-nav :focus-visible,
#hero :focus-visible,
#cta :focus-visible,
#footer :focus-visible,
.post-hero :focus-visible,
.contact-header :focus-visible,
.policy-header :focus-visible,
.blog-index-header :focus-visible {
  outline-color: var(--zb-color-surface);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--zb-color-canvas);
  color: var(--zb-color-ink);
  font-family: var(--zb-font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--zb-font-headline);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--zb-space-2);
}

h1 {
  font-weight: 800;
  font-size: clamp(2rem, 5.5vw, 3.25rem);
}

h2 {
  font-weight: 700;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}

h3 {
  font-weight: 600;
  font-size: 1.125rem;
}

p {
  margin: 0 0 var(--zb-space-2);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--zb-color-accent-text);
}

/* ── Layout primitives ────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--zb-maxw);
  margin: 0 auto;
  padding: 0 var(--zb-space-3);
}

.section {
  padding: var(--zb-space-4) 0;
}

.eyebrow {
  font-family: var(--zb-font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.8rem;
  color: var(--zb-color-accent-text);
  margin: 0 0 var(--zb-space-1);
}

/* ── CTA button ────────────────────────────────────────────────────── */
.cta-button {
  display: inline-block;
  background: var(--zb-cta-fill);
  color: var(--zb-cta-text);
  font-family: var(--zb-font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.875rem 2rem;
  border-radius: var(--zb-radius);
  border: none;
  cursor: pointer;
  transition: filter 0.15s;
}

.cta-button:hover,
.cta-button:focus {
  filter: brightness(0.92);
  color: var(--zb-cta-text);
}

/* ── Shared site header ─────────────────────────────────────────────
   The SAME markup on every page. Dark ink bar that sits above the
   hero on the homepage and reads as a clean branded header on
   content pages. */
.site-nav {
  background: var(--zb-color-ink);
  color: var(--zb-color-surface);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--zb-space-1) var(--zb-space-2);
  padding-top: var(--zb-space-2);
  padding-bottom: var(--zb-space-2);
}

.site-nav__brand {
  font-family: var(--zb-font-headline);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--zb-color-surface);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
}

.site-nav__logo {
  display: block;
  height: 88px;
  width: auto;
  /* The source artwork is dark, so on this always-dark nav bar it
     otherwise vanishes into the ink background. Force it to render
     as a light/white mark here so it stays legible. */
  filter: brightness(0) invert(1);
}

/* Mobile-first: links take a full row below the brand. */
.site-nav__links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  flex-basis: 100%;
  gap: var(--zb-space-1) var(--zb-space-2);
}

/* Desktop (≥ 900px): link group sits beside the brand. */
@media (min-width: 900px) {
  .site-nav__links {
    flex-basis: auto;
    gap: var(--zb-space-3);
  }
}

.site-nav__link {
  font-family: var(--zb-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  transition: color 0.12s;
}

.site-nav__link:hover,
.site-nav__link:focus {
  color: var(--zb-color-surface);
}

.site-nav__link--active {
  color: var(--zb-color-surface);
}

/* ── Footer ─────────────────────────────────────────────────────────── */
#footer {
  background: var(--zb-color-ink);
  color: var(--zb-color-canvas);
  padding: var(--zb-space-3) 0;
  font-size: 0.875rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

#footer a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
}

#footer a:hover {
  color: var(--zb-color-surface);
  text-decoration: underline;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--zb-space-3);
  margin-bottom: var(--zb-space-2);
}

@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.footer-brand {
  font-family: var(--zb-font-headline);
  font-weight: 700;
  font-size: 1rem;
  color: var(--zb-color-surface);
  display: block;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.footer-logo {
  display: block;
  height: 76px;
  width: auto;
  /* Same dark-on-dark issue as the nav logo: force a light/white
     render so the mark stays legible on the ink footer background. */
  filter: brightness(0) invert(1);
}

.footer-tagline {
  margin: 0 0 0.5rem;
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.875rem;
  line-height: 1.5;
}

.footer-email {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.78);
}

.footer-email a {
  color: rgba(255, 255, 255, 0.78);
}

.footer-email a:hover {
  color: var(--zb-color-surface);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-content: flex-start;
}

.footer-nav a,
.footer-nav button.footer-optout-link {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
}

.footer-nav a:hover,
.footer-nav button.footer-optout-link:hover {
  color: var(--zb-color-surface);
}

/* The opt-out control is a same-page action, not a navigation — it must
   be a <button>, not an <a href="#">. Reset button chrome so it still
   reads as a footer-nav link. */
.footer-nav button.footer-optout-link {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
}

.footer-nav button.footer-optout-link:hover {
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding-top: var(--zb-space-2);
  margin-top: var(--zb-space-2);
  /* 0.4 alpha white-on-ink measured ~3.7:1 — under the 4.5:1 floor for
     13px body text. Bumped to 0.6 (~6.7:1) without changing the look
     much; still the quietest text on the page. */
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8125rem;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom p.privacy-optout-confirmation {
  margin-top: var(--zb-space-1);
  color: var(--zb-color-surface);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--zb-radius);
  padding: 0.5rem 0.75rem;
  max-width: 32rem;
}

.privacy-optout-confirmation[hidden] {
  display: none;
}

/* ── Card grid (services) ────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--zb-space-3);
}

@media (min-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--zb-color-surface);
  border: 1px solid var(--zb-color-border);
  border-radius: var(--zb-radius);
  padding: var(--zb-space-3);
}

.card h3 {
  color: var(--zb-color-ink);
  margin-top: 0.375rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--zb-color-ink);
  margin-bottom: 0;
  line-height: 1.65;
  font-size: 0.9375rem;
}

/* ── Blog index ──────────────────────────────────────────────────────── */
.blog-index-header {
  background: var(--zb-color-ink);
  color: var(--zb-color-surface);
  padding: var(--zb-space-4) 0 var(--zb-space-3);
}

.blog-index-header h1 {
  color: var(--zb-color-surface);
  margin-bottom: var(--zb-space-1);
}

.blog-index-header .eyebrow {
  color: rgba(255, 255, 255, 0.55);
}

.blog-index-header .sub {
  color: rgba(255, 255, 255, 0.72);
  max-width: 52ch;
  font-size: 1.0625rem;
  line-height: 1.65;
  margin: 0;
}

.blog-grid-section {
  background: var(--zb-color-surface);
  padding: var(--zb-space-4) 0;
}

.blog-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--zb-space-3);
  margin-top: var(--zb-space-3);
}

@media (min-width: 900px) {
  .blog-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.blog-card {
  background: var(--zb-color-section-tint);
  border: 1px solid var(--zb-color-border);
  border-radius: var(--zb-radius);
  padding: var(--zb-space-3);
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.15s;
}

.blog-card:hover,
.blog-card:focus {
  box-shadow: 0 4px 20px rgba(30, 32, 36, 0.12);
  text-decoration: none;
}

.blog-card__category {
  font-family: var(--zb-font-body);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--zb-color-accent-text);
  margin: 0;
}

.blog-card__title {
  font-family: var(--zb-font-headline);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--zb-color-ink);
  line-height: 1.3;
  margin: 0;
}

.blog-card__blurb {
  font-size: 0.9375rem;
  color: var(--zb-color-ink);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.blog-card__read-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--zb-color-accent-text);
  margin: 0;
}

/* ── Blog post ──────────────────────────────────────────────────────── */
.post-hero {
  background: var(--zb-color-ink);
  padding: var(--zb-space-4) 0 var(--zb-space-3);
  color: var(--zb-color-surface);
}

.post-hero .eyebrow {
  color: rgba(255, 255, 255, 0.55);
}

.post-hero h1 {
  color: var(--zb-color-surface);
  max-width: 24ch;
  margin-top: var(--zb-space-1);
  margin-bottom: var(--zb-space-1);
}

.post-hero .sub {
  color: rgba(255, 255, 255, 0.72);
  max-width: 52ch;
  font-size: 1.0625rem;
  line-height: 1.65;
  margin: 0;
}

.post-body {
  background: var(--zb-color-surface);
  padding: var(--zb-space-4) 0;
}

.post-body .prose {
  max-width: 68ch;
}

.post-body h2 {
  margin-top: var(--zb-space-3);
}

.post-body h3 {
  margin-top: var(--zb-space-2);
}

.post-body p,
.post-body ul,
.post-body ol {
  line-height: 1.75;
  color: var(--zb-color-ink);
}

.post-body ul,
.post-body ol {
  padding-left: 1.5rem;
  margin-bottom: var(--zb-space-2);
}

.post-body li {
  margin-bottom: 0.375rem;
}

/* ── Contact / Thanks pages ─────────────────────────────────────────── */
.contact-header {
  background: var(--zb-color-ink);
  color: var(--zb-color-surface);
  padding: var(--zb-space-4) 0 var(--zb-space-3);
}

.contact-header h1 {
  color: var(--zb-color-surface);
  margin-bottom: var(--zb-space-1);
}

/* The shared .eyebrow default (dark navy) is meant for light bands —
   on this dark-ink header it rendered dark-on-dark at well under
   4.5:1. Match the light eyebrow treatment already used on #hero /
   .blog-index-header / .post-hero. */
.contact-header .eyebrow {
  color: rgba(255, 255, 255, 0.72);
}

.contact-header .sub {
  color: rgba(255, 255, 255, 0.72);
  max-width: 52ch;
  font-size: 1.0625rem;
  line-height: 1.65;
  margin: 0;
}

.contact-body {
  background: var(--zb-color-surface);
  padding: var(--zb-space-4) 0;
}

.contact-form-wrap {
  max-width: 38rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: var(--zb-space-2);
}

.form-field label {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--zb-color-ink);
}

.form-field input,
.form-field textarea {
  font-family: var(--zb-font-body);
  font-size: 1rem;
  color: var(--zb-color-ink);
  background: var(--zb-color-canvas);
  border: 1px solid var(--zb-color-border);
  border-radius: 0.5rem;
  padding: 0.625rem 0.875rem;
  width: 100%;
  transition: border-color 0.12s;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--zb-color-ink);
  outline-offset: 2px;
  border-color: var(--zb-color-accent);
}

.form-field .field-hint {
  font-size: 0.8125rem;
  color: var(--zb-color-ink);
  opacity: 0.72;
  margin: 0;
}

.form-field .field-error {
  font-size: 0.8125rem;
  color: var(--zb-color-secondary);
  margin: 0;
  font-weight: 600;
}

.form-field input[aria-invalid='true'],
.form-field textarea[aria-invalid='true'] {
  border-color: var(--zb-color-secondary);
}

.form-required-note {
  font-size: 0.875rem;
  color: var(--zb-color-ink);
  opacity: 0.72;
  margin: 0 0 var(--zb-space-2);
}

.form-field textarea {
  min-height: 8rem;
  resize: vertical;
}

.contact-mailto {
  margin-top: var(--zb-space-3);
  font-size: 0.9375rem;
  color: var(--zb-color-ink);
}

/* ── Thanks page ────────────────────────────────────────────────────── */
.thanks-body {
  background: var(--zb-color-surface);
  padding: var(--zb-space-4) 0;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.thanks-inner {
  max-width: 38rem;
}

.thanks-inner h1 {
  color: var(--zb-color-ink);
  margin-bottom: var(--zb-space-2);
}

.thanks-inner p {
  line-height: 1.75;
  color: var(--zb-color-ink);
}