/* Accessibility Cost — design system
   Colors, typography, and layout per spec. */

:root {
  --ac-primary: #1E4D8C;
  --ac-primary-dark: #143966;
  --ac-cream: #FAF6EE;
  --ac-cream-warm: #F4EDDC;
  --ac-text-heading: #1A1D24;
  --ac-text-body: #2D3138;
  --ac-text-muted: #6B6F77;
  --ac-accent-gold: #C9A961;
  --ac-border: #E8DFC9;
  --ac-surface: #FFFFFF;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 18px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  color: var(--ac-text-body);
  background: var(--ac-cream);
  font-size: 18px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection { background: rgba(30, 77, 140, 0.15); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ac-primary); }
a:hover { color: var(--ac-primary-dark); }

h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  color: var(--ac-text-heading);
  font-feature-settings: "ss01", "ss02";
}
h1 { font-size: 52px; line-height: 1.15; font-weight: 600; }
h2 { font-size: 30px; line-height: 1.25; font-weight: 600; }
h3 { font-size: 22px; line-height: 1.3;  font-weight: 500; }
h4 { font-size: 19px; line-height: 1.35; font-weight: 500; }

/* Layout */
.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }
.site-main { flex: 1; }
.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--wide { max-width: 1080px; }
.container--post { max-width: 720px; }

/* Header */
.site-header {
  background: var(--ac-cream);
  border-bottom: 1px solid var(--ac-border);
  padding: 28px 0;
  min-height: 100px;
}
.site-header .container {
  max-width: 1080px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-logo {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 24px;
  font-weight: 600;
  color: var(--ac-text-heading);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.site-logo:hover { color: var(--ac-primary); }
.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.site-nav a {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 500;
  color: var(--ac-text-body);
  text-decoration: none;
  padding: 4px 18px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
  line-height: 1.5;
}
.site-nav a:last-child { padding-right: 0; }
.site-nav a:hover { color: var(--ac-primary); }
.site-nav a.current { border-bottom-color: var(--ac-accent-gold); padding-bottom: 2px; }

/* Breadcrumb */
.ac-breadcrumb {
  background: var(--ac-cream-warm);
  border-bottom: 1px solid var(--ac-border);
  padding: 14px 0;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--ac-text-muted);
}
.ac-breadcrumb .container { max-width: 1080px; }
.ac-breadcrumb a { color: var(--ac-primary); text-decoration: none; }
.ac-breadcrumb a:hover { text-decoration: underline; }
.ac-breadcrumb .sep { color: var(--ac-accent-gold); margin: 0 8px; }

/* ===== HOMEPAGE ===== */
.ac-home-hero { text-align: center; padding: 80px 0 24px; }
.ac-home-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 58px;
  font-weight: 600;
  line-height: 1.05;
  color: var(--ac-text-heading);
  letter-spacing: -0.015em;
}
.ac-home-sub {
  font-family: 'Inter', sans-serif;
  font-size: 20px;
  line-height: 1.6;
  color: var(--ac-text-muted);
  max-width: 580px;
  margin: 24px auto 72px;
}
.ac-section-heading {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 30px;
  font-weight: 600;
  color: var(--ac-text-heading);
  text-align: center;
  padding-bottom: 8px;
  margin-bottom: 40px;
  position: relative;
}
.ac-section-heading::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--ac-accent-gold);
  margin: 14px auto 0;
}

.ac-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 920px;
  margin: 0 auto 80px;
}
.ac-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
  border-radius: 4px;
  padding: 32px 32px 28px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.ac-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 77, 140, 0.08);
  border-color: var(--ac-accent-gold);
}
.ac-card-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 24px;
  font-weight: 600;
  color: var(--ac-text-heading);
  line-height: 1.2;
}
.ac-card-desc {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  color: var(--ac-text-muted);
  line-height: 1.6;
}

/* Compact card variant (related refs at post bottom) */
.ac-card-grid--compact {
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  max-width: 100%;
  margin-bottom: 0;
}
.ac-card--compact { padding: 24px 24px 22px; }
.ac-card--compact .ac-card-title { font-size: 19px; }
.ac-card--compact .ac-card-desc { font-size: 14px; }

.ac-related {
  margin-top: 80px;
  padding-top: 48px;
  border-top: 1px solid var(--ac-border);
}
.ac-related-heading {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 32px;
  color: var(--ac-text-heading);
}

/* ===== POST / ARTICLE ===== */
.ac-article { padding-top: 0; }
.ac-article-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--ac-border);
  margin-bottom: 48px;
}
.ac-article-header--page {
  padding: 64px 0 36px;
  border-bottom: 1px solid var(--ac-border);
  margin-bottom: 40px;
}
.ac-article-label {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ac-primary);
  margin-bottom: 16px;
}
.ac-article-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 44px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ac-text-heading);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.ac-article-meta {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--ac-text-muted);
}

.ac-highlight {
  background: var(--ac-cream-warm);
  border-left: 4px solid var(--ac-accent-gold);
  padding: 24px 28px;
  margin-bottom: 44px;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 19px;
  line-height: 1.6;
  color: var(--ac-text-heading);
  border-radius: 0 4px 4px 0;
}
.ac-highlight a { color: var(--ac-primary); }

.ac-entry {
  font-family: 'Inter', sans-serif;
  font-size: 19px;
  line-height: 1.8;
  color: var(--ac-text-body);
}
.ac-entry p { margin-bottom: 24px; }
.ac-entry h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--ac-text-heading);
  margin: 56px 0 18px;
}
.ac-entry h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--ac-text-heading);
  margin: 40px 0 14px;
}
.ac-entry h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 19px;
  font-weight: 500;
  margin: 28px 0 10px;
  color: var(--ac-text-heading);
}
.ac-entry a {
  color: var(--ac-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.ac-entry a:hover { color: var(--ac-primary-dark); }
.ac-entry ul, .ac-entry ol { margin: 0 0 24px 28px; }
.ac-entry li { margin-bottom: 8px; }
.ac-entry blockquote {
  border-left: 3px solid var(--ac-accent-gold);
  padding-left: 24px;
  margin: 32px 0;
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-size: 20px;
  line-height: 1.5;
  color: var(--ac-text-heading);
}
.ac-entry blockquote p { margin-bottom: 0; }

/* Tables */
.ac-entry table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  margin: 32px 0;
  border: 1px solid var(--ac-border);
  border-radius: 4px;
  overflow: hidden;
}
.ac-entry table thead th {
  background: var(--ac-cream-warm);
  color: var(--ac-text-heading);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  padding: 12px 18px;
  border-bottom: 1px solid var(--ac-border);
}
.ac-entry table tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--ac-border);
  color: var(--ac-text-body);
  vertical-align: top;
}
.ac-entry table tbody tr:last-child td { border-bottom: none; }
.ac-entry table tbody td:first-child {
  font-weight: 600;
  color: var(--ac-text-heading);
}

/* ===== BLOG ARCHIVE ===== */
.archive-header {
  text-align: center;
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--ac-border);
  margin-bottom: 56px;
}
.archive-label {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ac-primary);
  margin-bottom: 14px;
}
.archive-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 44px;
  font-weight: 600;
  color: var(--ac-text-heading);
  line-height: 1.15;
  margin-bottom: 16px;
}
.archive-description {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  color: var(--ac-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-bottom: 64px;
}
.post-card { padding-bottom: 48px; border-bottom: 1px solid var(--ac-border); }
.post-card:last-child { border-bottom: none; }
.post-card-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 12px;
}
.post-card-title a { color: var(--ac-text-heading); text-decoration: none; }
.post-card-title a:hover { color: var(--ac-primary); }
.post-card-excerpt {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  color: var(--ac-text-body);
  line-height: 1.7;
  margin-bottom: 12px;
}
.post-card-meta {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--ac-text-muted);
}

.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 56px 0 72px;
  flex-wrap: wrap;
}
.pagination a, .pagination span {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  padding: 8px 14px;
  border: 1px solid var(--ac-border);
  border-radius: 4px;
  color: var(--ac-primary);
  text-decoration: none;
  background: var(--ac-surface);
}
.pagination a:hover { border-color: var(--ac-accent-gold); }
.pagination .current {
  background: var(--ac-primary);
  color: #FFFFFF;
  border-color: var(--ac-primary);
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--ac-cream-warm);
  border-top: 1px solid var(--ac-border);
  padding: 56px 0 48px;
  margin-top: 96px;
  text-align: center;
}
.footer-links {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
}
.footer-links a {
  color: var(--ac-text-body);
  text-decoration: none;
  padding: 0 6px;
}
.footer-links a:hover { color: var(--ac-primary); text-decoration: underline; }
.footer-sep { color: var(--ac-accent-gold); }
.footer-copy {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--ac-text-muted);
  margin-top: 16px;
}

/* ===== CONTACT FORM ===== */
.ac-contact-form { max-width: 620px; margin: 12px 0 0; }
.ac-contact-form .form-intro {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  color: var(--ac-text-body);
  line-height: 1.65;
  margin: 0 0 36px;
}
.ac-contact-form .form-field { margin-bottom: 26px; }
.ac-contact-form label {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--ac-text-heading);
  margin-bottom: 8px;
}
.ac-contact-form input[type="text"],
.ac-contact-form input[type="email"],
.ac-contact-form textarea {
  display: block;
  width: 100%;
  padding: 14px 16px;
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  color: var(--ac-text-body);
  background: var(--ac-surface);
  border: 1px solid #D4CBB5;
  border-radius: 3px;
  line-height: 1.5;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
}
.ac-contact-form input:focus,
.ac-contact-form textarea:focus {
  outline: none;
  border-color: var(--ac-primary);
  box-shadow: 0 0 0 3px rgba(30, 77, 140, 0.12);
}
.ac-contact-form textarea {
  min-height: 180px;
  resize: vertical;
  line-height: 1.6;
}
.ac-contact-form .submit-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.ac-contact-form button[type="submit"] {
  background: var(--ac-primary);
  color: #FFFFFF;
  border: none;
  padding: 14px 32px;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 600;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background 0.18s ease, transform 0.1s ease, box-shadow 0.18s ease;
}
.ac-contact-form button[type="submit"]:hover { background: var(--ac-primary-dark); }
.ac-contact-form button[type="submit"]:hover .submit-arrow { transform: translateX(3px); }
.ac-contact-form button[type="submit"]:active { transform: translateY(1px); }
.ac-contact-form button[type="submit"]:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(30, 77, 140, 0.28);
}
.ac-contact-form .submit-arrow { display: inline-block; transition: transform 0.18s ease; }
.ac-contact-form .submit-note {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--ac-text-muted);
}
.ac-contact-form .ac-field-error {
  display: block;
  margin-top: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: #B33A3A;
  font-weight: 500;
}
.ac-form-success {
  background: var(--ac-cream-warm);
  border-left: 4px solid var(--ac-accent-gold);
  padding: 20px 24px;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 17px;
  color: var(--ac-text-heading);
  line-height: 1.6;
  margin-bottom: 24px;
  border-radius: 0 3px 3px 0;
}
.ac-form-success strong { display: block; font-weight: 600; font-size: 19px; margin-bottom: 4px; }
.ac-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ===== RESPONSIVE ===== */
@media (max-width: 780px) {
  html { font-size: 17px; }
  h1 { font-size: 38px; }
  h2, .ac-entry h2 { font-size: 25px; margin-top: 44px; }
  h3, .ac-entry h3 { font-size: 20px; margin-top: 32px; }
  .ac-home-title { font-size: 42px; }
  .ac-home-sub { font-size: 18px; margin-bottom: 56px; }
  .ac-section-heading { font-size: 25px; }
  .ac-article-title { font-size: 32px; }
  .archive-title { font-size: 32px; }
  .ac-card-grid,
  .ac-card-grid--compact {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .ac-card { padding: 24px 22px; }
  .ac-entry { font-size: 17px; }
  .ac-home-hero { padding: 56px 0 20px; }
  .ac-article-header { padding: 48px 0 36px; margin-bottom: 36px; }
  .site-nav a { padding: 4px 14px; font-size: 15px; }
  .ac-contact-form button[type="submit"] { width: 100%; justify-content: center; }
}