/* ShipDataFast · Shared Design System & Stylesheet
   Strict adherence to INTENT.md: No external fonts, no JS dependencies, WCAG 2.2 AA compliant
*/

:root {
  /* Exact color tokens from INTENT.md §16 */
  --paper: #F3F2ED;
  --white: #FFFFFF;
  --ink: #111713;
  --muted: #505950;
  --blue: #153FE0;
  --blue-hover: #102BA0;
  --lime: #D7FF3F;
  --line: #C8CCC3;
  --error: #9F1838;
  --success: #246340;

  /* Typography Stacks from INTENT.md §17 */
  --font-main: Arial, Helvetica, sans-serif;
  --font-data: ui-monospace, SFMono-Regular, Consolas, monospace;

  /* Spacing Scale from INTENT.md §18 */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-72: 72px;
  --space-104: 104px;
  --space-144: 144px;

  /* Container */
  --max-width: 1360px;
}

/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-main);
  font-size: 18px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: auto;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Rules */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-main);
  font-weight: 700;
  letter-spacing: -0.045em;
  color: var(--ink);
  line-height: 1.1;
}

.h1-home {
  font-size: clamp(3rem, 8.5vw, 8rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  margin-bottom: var(--space-24);
}

.h1-interior {
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  margin-bottom: var(--space-24);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1.08;
  margin-bottom: var(--space-24);
}

h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.75rem);
  line-height: 1.2;
  margin-bottom: var(--space-16);
}

p {
  margin-bottom: var(--space-16);
  max-width: 68ch;
}

p.intro {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: var(--space-24);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-bottom: var(--space-16);
}

.highlight-lime {
  background-color: var(--lime);
  color: var(--ink);
  padding: 0 4px;
  display: inline;
}

.text-muted {
  color: var(--muted);
}

/* Links & Interactive */
a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

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

/* Focus indicator per INTENT.md §22 */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--ink);
  color: var(--white);
  padding: 12px 24px;
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--ink);
  border-radius: 2px;
  cursor: pointer;
  min-height: 44px;
}

.btn-primary:hover {
  background-color: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--ink);
  padding: 12px 24px;
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--ink);
  border-radius: 2px;
  cursor: pointer;
  min-height: 44px;
}

.btn-secondary:hover {
  background-color: var(--ink);
  color: var(--white);
}

.btn-white {
  background-color: var(--white);
  color: var(--ink);
  border-color: var(--white);
}

.btn-white:hover {
  background-color: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -999px;
  left: 20px;
  background: var(--ink);
  color: var(--white);
  padding: 12px 20px;
  z-index: 1000;
  text-decoration: none;
  font-family: var(--font-data);
  font-weight: bold;
}

.skip-link:focus {
  top: 20px;
}

/* Layout & Grid (§18) */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 640px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: 48px;
    padding-right: 48px;
  }
}

.section {
  padding-top: var(--space-48);
  padding-bottom: var(--space-48);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-72);
    padding-bottom: var(--space-72);
  }
}

@media (min-width: 1024px) {
  .section {
    padding-top: var(--space-104);
    padding-bottom: var(--space-104);
  }
}

.grid-12 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
}

@media (min-width: 900px) {
  .grid-12 {
    grid-template-columns: repeat(12, 1fr);
  }
}

/* Header & Navigation (§8.1 & §21) */
.site-header {
  border-bottom: 1px solid var(--ink);
  background-color: var(--paper);
  height: 68px;
  display: flex;
  align-items: center;
}

@media (min-width: 1024px) {
  .site-header {
    height: 80px;
  }
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-wordmark {
  font-family: var(--font-main);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-decoration: none;
}

.brand-wordmark:hover {
  color: var(--blue);
}

/* Native Nav & Disclosures */
.site-nav {
  display: none;
}

@media (min-width: 900px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-32);
  }
}

.nav-link {
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
}

.nav-link:hover {
  color: var(--blue);
  text-decoration: underline;
}

.nav-disclosure {
  position: relative;
}

.nav-disclosure summary {
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-disclosure summary::-webkit-details-marker {
  display: none;
}

.nav-disclosure summary::after {
  content: "▾";
  font-size: 12px;
}

.nav-disclosure[open] summary::after {
  content: "▴";
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background-color: var(--white);
  border: 1px solid var(--ink);
  padding: var(--space-8);
  min-width: 220px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.nav-dropdown a {
  display: block;
  padding: 8px 12px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}

.nav-dropdown a:hover {
  background-color: var(--paper);
  color: var(--blue);
}

/* Mobile Nav */
.mobile-nav-toggle {
  display: block;
  position: relative;
}

@media (min-width: 900px) {
  .mobile-nav-toggle {
    display: none;
  }
}

.mobile-nav-toggle summary {
  list-style: none;
  border: 1px solid var(--ink);
  padding: 8px 16px;
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  background: var(--white);
}

.mobile-nav-toggle summary::-webkit-details-marker {
  display: none;
}

.mobile-nav-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 280px;
  background: var(--white);
  border: 1px solid var(--ink);
  padding: var(--space-16);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.mobile-nav-panel a {
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  padding: 4px 0;
  border-bottom: 1px solid var(--line);
}

/* Editorial Split (§18) */
.editorial-5-7 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
}

@media (min-width: 900px) {
  .editorial-5-7 {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-48);
  }
}

/* Hero Section Split (8/4) */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 8fr 4fr;
    gap: var(--space-48);
    align-items: end;
  }
}

/* Editorial Service Rows (§8.4) */
.service-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  padding: var(--space-32) 0;
  border-top: 1px solid var(--ink);
}

@media (min-width: 900px) {
  .service-row {
    grid-template-columns: 80px 280px 1fr 200px;
    align-items: baseline;
    gap: var(--space-24);
  }
}

.service-index {
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 700;
  color: var(--muted);
}

.service-title {
  font-size: 24px;
  font-weight: 700;
}

.service-link {
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
}

/* Product Pair Panels (§8.5) */
.product-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
}

@media (min-width: 760px) {
  .product-pair {
    grid-template-columns: 1fr 1fr;
  }
}

.product-panel {
  background: var(--white);
  border: 1px solid var(--ink);
  padding: var(--space-32);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Evidence and Data Tables (§20) */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--white);
  margin-top: var(--space-16);
  margin-bottom: var(--space-16);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 14px;
  text-align: left;
}

table.data-table th,
table.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

table.data-table th:last-child,
table.data-table td:last-child {
  border-right: none;
}

table.data-table th {
  background-color: var(--paper);
  color: var(--ink);
  font-weight: 700;
}

table.data-table tr:last-child td {
  border-bottom: none;
}

/* Difference cell styling per §16 */
.status-match, .status-pass {
  color: var(--success);
  font-weight: 700;
}

.status-diff, .status-fail {
  color: var(--error);
  font-weight: 700;
  background-color: #fdf2f4;
}

.status-tag {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid currentColor;
  font-size: 12px;
}

/* Contact Close Section (§8.8) */
.section-contact-close {
  background-color: var(--blue);
  color: var(--white);
  border-bottom: none;
}

.section-contact-close h2 {
  color: var(--white);
}

.section-contact-close p {
  color: var(--paper);
}

/* Footer (§7) */
.site-footer {
  background-color: var(--paper);
  border-top: 1px solid var(--ink);
  padding-top: var(--space-72);
  padding-bottom: var(--space-48);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
  margin-bottom: var(--space-48);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-col h4 {
  font-family: var(--font-data);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: var(--space-16);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer-col a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}

.footer-col a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: var(--space-24);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-16);
  font-size: 14px;
  color: var(--muted);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-16);
}

/* Breadcrumbs */
.breadcrumbs {
  font-family: var(--font-data);
  font-size: 14px;
  margin-bottom: var(--space-24);
  color: var(--muted);
}

.breadcrumbs a {
  color: var(--ink);
  text-decoration: underline;
}

.breadcrumbs span {
  margin: 0 6px;
}

/* FAQ Details/Summary (§19 & AEO Answer Blocks) */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  margin-top: var(--space-24);
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--ink);
  padding: var(--space-24);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-16);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--ink);
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-answer {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: 1px solid var(--line);
}

.faq-answer p {
  margin-bottom: var(--space-12);
  max-width: none;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* System Flow & Migration Visuals (§6 & §7) */
.migration-diagram {
  background: var(--white);
  border: 1px solid var(--ink);
  padding: 20px;
}

.migration-step {
  padding: 12px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 13px;
}

.migration-arrow {
  text-align: center;
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--blue);
  padding: 8px 0;
  font-size: 14px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 16px;
}

@media (min-width: 600px) {
  .stat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.stat-box {
  border: 1px solid var(--line);
  padding: 12px;
  background: var(--white);
  font-family: var(--font-data);
}

.stat-box-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  display: block;
  margin-bottom: 4px;
}

.stat-box-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.stat-box-diff {
  border-left: 3px solid var(--error);
}

.stat-box-match {
  border-left: 3px solid var(--success);
}

.system-flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
}

@media (min-width: 900px) {
  .system-flow-grid {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
  }
}

.system-box {
  background: var(--white);
  border: 1px solid var(--ink);
  padding: 24px;
}

.system-box h4 {
  font-family: var(--font-data);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.system-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 14px;
}

.system-flow-arrow {
  text-align: center;
  padding: 16px;
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--blue);
  background: var(--paper);
  border: 1px solid var(--line);
}

/* Contact Page & Tally Form Embed */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
}

.tally-wrapper {
  background: var(--white);
  border: 1px solid var(--ink);
  padding: var(--space-24);
  position: relative;
  min-height: 500px;
}

@media (min-width: 640px) {
  .tally-wrapper {
    padding: var(--space-32);
  }
}

.tally-iframe {
  width: 100%;
  min-height: 480px;
  border: 0;
  display: block;
}

.tally-fallback {
  margin-top: var(--space-24);
  padding: var(--space-16);
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 14px;
}

.contact-security-box {
  margin-top: var(--space-32);
  padding: var(--space-24);
  border: 1px solid var(--line);
  background: var(--paper);
}

.contact-security-box p {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

/* Checklist email gate */
.gate-form { margin-top: 32px; max-width: 640px; background: var(--white); border: 1px solid var(--line); padding: 24px; }
.gate-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; flex: 1; }
.gate-field label { font-weight: 700; font-size: 15px; }
.gate-field input { font: inherit; padding: 12px; border: 1px solid var(--line); background: var(--white); color: var(--ink); }
.gate-field input:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
.gate-row { display: flex; gap: 16px; flex-wrap: wrap; }
.gate-row .gate-field { min-width: 220px; }
.gate-check { display: flex; gap: 10px; align-items: flex-start; margin: 8px 0 12px; font-size: 15px; }
.gate-check input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.gate-privacy { font-size: 14px; color: var(--muted); margin: 0 0 20px; }
.gate-honey { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.gate-form button.btn-primary { cursor: pointer; }

/* ---- Blog (added 8 Oct 2026) ---- */
.blog-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.blog-list:empty, .blog-list:not(:has(li)) { border-top: 0; }
.blog-item { padding: 24px 0; border-bottom: 1px solid var(--line); }
.blog-item h2 { margin: 4px 0 8px; font-size: 1.5rem; }
.blog-item h2 a { color: var(--ink); text-decoration: none; }
.blog-item h2 a:hover { color: var(--blue); }
.blog-item time { font-family: var(--font-data); font-size: 0.85rem; color: var(--muted); }
.blog-item p { margin: 0; color: var(--muted); max-width: 68ch; }
.blog-empty { background: var(--white); border: 1px solid var(--line); padding: 32px; max-width: 720px; }
.article-wrap { max-width: 760px; }
.article-meta { color: var(--muted); font-family: var(--font-data); font-size: 0.9rem; margin: 8px 0 32px; }
.article-body { font-size: 1.1rem; line-height: 1.65; }
.article-body h2 { margin-top: 40px; }
.article-body ul, .article-body ol { padding-left: 1.25em; }
.article-body li { margin-bottom: 8px; }
.article-linkedin, .article-close { margin-top: 40px; padding: 24px; border: 1px solid var(--line); background: var(--white); }
.article-linkedin { border-left: 4px solid var(--blue); }
.article-close { background: var(--paper); }
.article-hero { margin: 0 0 32px; }
.article-hero img { display: block; width: 100%; max-width: 640px; height: auto; border: 1px solid var(--line); }
.li-link { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--blue); }
.li-link:hover { color: var(--blue-hover); }
.li-icon { flex: none; }

/* Products dropdown with descriptions */
.nav-dropdown-products { min-width: 320px; }
.nav-dropdown-products a strong { display: block; font-weight: 700; }
.nav-dropdown-products a small { display: block; color: var(--muted); font-size: 13px; line-height: 1.4; margin-top: 2px; }
.mobile-nav-label { font-family: var(--font-data); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }

/* Venture landing pages (shared components, scoped to main) */
main .lead { font-size: 20px; max-width: 68ch; }
main .hl, main .hero-h1 mark { background: var(--lime); color: var(--ink); padding: 0 .2em; }
main .v-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin-top: 24px; }
main .v-card { background: var(--white); border: 1px solid var(--line); padding: 24px; }
main .v-card h3, main .v-card b { display: block; color: var(--blue); margin: 0 0 8px; }
main .v-price { font-size: 40px; font-weight: 800; color: var(--blue); margin: 0; }
main .fmt span { display: inline-block; background: var(--ink); color: var(--lime); padding: 3px 10px; margin: 3px 4px 3px 0; font-family: var(--font-data); font-weight: 700; font-size: 14px; }
main .v-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
main .faq details { background: var(--white); border: 1px solid var(--line); padding: 14px 18px; margin: 10px 0; }
main .faq summary { font-weight: 700; cursor: pointer; }
main .faq details p { margin: 8px 0 0; }
.gate-field select, .gate-field textarea { font: inherit; padding: 12px; border: 1px solid var(--line); background: var(--white); color: var(--ink); width: 100%; }

/* Header CTA: hidden on small screens (it is in the mobile menu), shown once the desktop nav has room */
.header-cta { display: none; }
@media (min-width: 1100px) { .header-cta { display: inline-flex; } }
.gate-field textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }