/* VEHRON website styles */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --theme-bg: #f6f3ec;
  --theme-surface: #ffffff;
  --theme-surface-soft: #eef3f8;
  --theme-surface-warm: #fff8f1;
  --theme-ink: #10253d;
  --theme-blue: #103a71;
  --theme-blue-deep: #081c38;
  --theme-blue-soft: #d6e3f3;
  --theme-red: #b3263b;
  --theme-red-deep: #8d1d2e;
  --theme-gold: #c08b2d;
  --theme-green: #2d6a4f;
  --theme-line: #cbd6e2;
  --theme-muted: #54657a;
  --theme-shadow: 0 20px 48px rgba(8, 28, 56, 0.12);
  --font-body: Georgia, "Times New Roman", serif;
  --font-ui: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top left, rgba(16, 58, 113, 0.08), transparent 28%),
    linear-gradient(180deg, #fbfaf7 0%, var(--theme-bg) 100%);
  color: var(--theme-ink);
  font-family: var(--font-body);
  line-height: 1.7;
}

a {
  color: inherit;
}

code,
pre {
  font-family: "Courier New", monospace;
}

.container {
  margin: 0 auto;
  max-width: 1200px;
  padding: 0 1.5rem;
}

.site-nav {
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid rgba(16, 58, 113, 0.12);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-inner {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  min-height: 4.85rem;
}

.logo {
  align-items: center;
  display: inline-flex;
  gap: 0.85rem;
  text-decoration: none;
}

.logo-mark {
  align-items: center;
  background: linear-gradient(145deg, var(--theme-blue), var(--theme-blue-deep));
  border-radius: 0.85rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
  color: #ffffff;
  display: inline-flex;
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  height: 2.45rem;
  justify-content: center;
  width: 2.45rem;
}

.logo-text {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.nav-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.95rem;
  justify-content: flex-end;
}

.nav-link {
  color: var(--theme-muted);
  font-family: var(--font-ui);
  font-size: 0.93rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--theme-blue);
}

.page-home a[href="index.html"],
.page-models a[href="models.html"],
.page-documentation a[href="documentation.html"],
.page-examples a[href="examples.html"],
.page-validation a[href="validation.html"],
.page-blog a[href="blog.html"],
.page-roadmap a[href="roadmap.html"],
.page-citation a[href="citation.html"] {
  color: var(--theme-blue-deep);
}

.hero,
.page-hero {
  padding: 4.5rem 0 3.8rem;
}

.hero-grid,
.page-hero-grid,
.split-grid,
.narrative-grid,
.workflow-grid,
.footer-grid,
.callout-inner,
.two-col-grid {
  align-items: start;
  display: grid;
  gap: 1.5rem;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.page-hero-grid,
.split-grid,
.narrative-grid,
.two-col-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.workflow-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.eyebrow,
.panel-label,
.feature-kicker,
.status-label {
  color: var(--theme-red);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  margin-bottom: 1rem;
}

.hero h1,
.page-title {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  line-height: 0.98;
}

.hero h1 {
  font-size: clamp(3.1rem, 7vw, 5.2rem);
  letter-spacing: 0.09em;
  margin-bottom: 0.9rem;
}

.page-title {
  font-size: clamp(2.25rem, 5vw, 4rem);
  margin-bottom: 0.9rem;
}

.hero-expansion,
.page-subtitle,
.footer-heading,
.table-note,
.blog-meta,
.article-meta {
  font-family: var(--font-ui);
}

.hero-expansion,
.page-subtitle {
  color: var(--theme-blue);
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 1.2rem;
  text-transform: uppercase;
}

.hero-summary,
.section-heading p,
.lead,
.footer-copy,
.callout-inner p,
.page-intro,
.card-copy,
.article-body p,
.article-body li,
.table-note {
  color: var(--theme-muted);
  font-size: 1.05rem;
}

.section {
  padding: 4.75rem 0;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(16, 58, 113, 0.05), rgba(16, 58, 113, 0.01)),
    var(--theme-surface-soft);
  border-top: 1px solid rgba(16, 58, 113, 0.08);
  border-bottom: 1px solid rgba(16, 58, 113, 0.08);
}

.section-warm {
  background:
    linear-gradient(180deg, rgba(192, 139, 45, 0.06), rgba(192, 139, 45, 0.02)),
    var(--theme-surface-warm);
  border-top: 1px solid rgba(179, 38, 59, 0.08);
  border-bottom: 1px solid rgba(179, 38, 59, 0.08);
}

.section-heading {
  margin-bottom: 2rem;
  max-width: 52rem;
}

.section-heading h2,
.section-callout h2,
.narrative-grid h2,
.article-body h2 {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  line-height: 1.12;
}

.section-heading h2,
.section-callout h2,
.narrative-grid h2 {
  font-size: clamp(1.95rem, 4vw, 2.9rem);
  margin-bottom: 0.9rem;
}

.article-body h2 {
  font-size: 1.42rem;
  margin: 2rem 0 0.85rem;
}

.article-body h2:first-child {
  margin-top: 0;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  display: inline-flex;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 700;
  justify-content: center;
  min-width: 11rem;
  padding: 0.82rem 1.35rem;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.nav-actions .btn {
  min-width: 0;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--theme-red);
  box-shadow: 0 14px 30px rgba(179, 38, 59, 0.22);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--theme-red-deep);
}

.btn-secondary,
.btn-outline,
.btn-nav {
  background: transparent;
  border-color: rgba(16, 58, 113, 0.22);
  color: var(--theme-blue);
}

.btn-secondary:hover,
.btn-secondary:focus-visible,
.btn-outline:hover,
.btn-outline:focus-visible,
.btn-nav:hover,
.btn-nav:focus-visible {
  background: var(--theme-blue);
  border-color: var(--theme-blue);
  color: #ffffff;
}

.hero-card,
.status-card,
.mini-code,
.feature-card,
.capability-card,
.narrative-card,
.data-card,
.doc-card,
.example-card,
.blog-card,
.callout-card,
.note-panel,
.metadata-strip,
.table-card,
.article-body {
  background: var(--theme-surface);
  border: 1px solid rgba(16, 58, 113, 0.1);
  border-radius: 1.35rem;
  box-shadow: var(--theme-shadow);
}

.hero-card,
.status-card,
.feature-card,
.capability-card,
.narrative-card,
.data-card,
.doc-card,
.example-card,
.blog-card,
.callout-card,
.note-panel,
.table-card,
.article-body {
  padding: 1.6rem;
}

.metadata-strip {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin: 1.5rem 0 0;
  padding: 1rem;
}

.metadata-item {
  border-left: 1px solid rgba(16, 58, 113, 0.12);
  padding-left: 0.9rem;
}

.metadata-item:first-child {
  border-left: 0;
  padding-left: 0;
}

.metadata-item dt {
  color: var(--theme-muted);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
}

.metadata-item dd {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.status-card h2,
.hero-card h2,
.feature-card h3,
.capability-card h3,
.narrative-card h3,
.data-card h3,
.doc-card h3,
.example-card h3,
.blog-card h3,
.callout-card h3,
.table-card h3 {
  color: var(--theme-blue);
  font-family: var(--font-ui);
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
}

.hero-card h2 {
  font-size: 1.5rem;
}

.panel-label,
.feature-kicker,
.status-label {
  display: block;
  margin-bottom: 0.65rem;
}

.status-list,
.check-list,
.plain-list,
.link-list,
.tag-list,
.meta-list {
  display: grid;
  gap: 0.8rem;
  list-style: none;
}

.status-list li,
.check-list li,
.plain-list li,
.link-list li,
.meta-list li {
  padding-left: 1.35rem;
  position: relative;
}

.status-list li::before,
.check-list li::before,
.plain-list li::before,
.link-list li::before,
.meta-list li::before {
  color: var(--theme-red);
  content: "+";
  font-family: var(--font-ui);
  font-weight: 700;
  left: 0;
  position: absolute;
  top: 0;
}

.tag-list {
  gap: 0.65rem;
  grid-template-columns: repeat(auto-fit, minmax(120px, max-content));
}

.tag-list li,
.status-pill {
  background: rgba(16, 58, 113, 0.08);
  border-radius: 999px;
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.35rem 0.7rem;
}

.status-pill-supported {
  background: rgba(45, 106, 79, 0.12);
  color: var(--theme-green);
}

.status-pill-experimental {
  background: rgba(192, 139, 45, 0.16);
  color: #7c5a12;
}

.status-pill-planned {
  background: rgba(179, 38, 59, 0.12);
  color: var(--theme-red);
}

.feature-grid,
.capability-grid,
.card-grid,
.doc-grid,
.example-grid,
.blog-grid,
.stats-grid,
.quote-grid {
  display: grid;
  gap: 1.4rem;
}

.feature-grid,
.card-grid,
.stats-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.capability-grid,
.doc-grid,
.example-grid,
.blog-grid,
.quote-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.blog-card h3 a,
.doc-card a,
.example-card a,
.article-body a {
  color: var(--theme-blue);
  text-decoration: none;
}

.blog-card h3 a:hover,
.blog-card h3 a:focus-visible,
.doc-card a:hover,
.doc-card a:focus-visible,
.example-card a:hover,
.example-card a:focus-visible,
.article-body a:hover,
.article-body a:focus-visible {
  color: var(--theme-red);
}

.mini-code,
.code-block,
.tree-block {
  background: linear-gradient(180deg, #0d1e32 0%, #091426 100%);
  border-radius: 1.25rem;
  color: #dbe5ef;
  overflow: auto;
  padding: 1.35rem;
}

.mini-code {
  border: 1px solid rgba(16, 58, 113, 0.16);
}

.code-label {
  color: #f4c7cf;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 0.7rem;
  text-transform: uppercase;
}

.code-block pre,
.mini-code pre,
.tree-block pre {
  font-size: 0.92rem;
  line-height: 1.7;
  white-space: pre-wrap;
}

.callout-inner {
  background: linear-gradient(135deg, var(--theme-blue-deep), var(--theme-blue));
  border-radius: 1.6rem;
  box-shadow: var(--theme-shadow);
  color: #ffffff;
  grid-template-columns: minmax(0, 1.1fr) auto;
  padding: 2rem;
}

.callout-inner .eyebrow,
.eyebrow-footer {
  color: #f7bec8;
}

.callout-inner h2,
.callout-inner p,
.callout-inner a,
.footer-title,
.site-footer a,
.footer-heading,
.site-footer .footer-copy {
  color: #ffffff;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  min-width: 100%;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid rgba(16, 58, 113, 0.12);
  padding: 0.9rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

td {
  color: var(--theme-muted);
}

.site-footer {
  background: var(--theme-blue-deep);
  margin-top: 4rem;
  padding: 3rem 0;
}

.footer-grid {
  grid-template-columns: 1.2fr 0.9fr 1fr;
}

.footer-title {
  font-family: var(--font-ui);
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.footer-heading {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.site-footer a {
  display: block;
  margin-bottom: 0.55rem;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: #f7bec8;
}

.footer-meta {
  color: #d3deeb;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  margin-top: 0.8rem;
}

.article-shell {
  margin: 0 auto;
  max-width: 880px;
}

.article-header {
  margin-bottom: 2rem;
}

.article-title {
  color: var(--theme-blue-deep);
  font-family: var(--font-ui);
  font-size: clamp(2.45rem, 6vw, 4.2rem);
  line-height: 1.03;
  margin-bottom: 1rem;
}

.article-meta {
  color: var(--theme-red);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-body ul,
.article-body ol {
  color: var(--theme-muted);
  margin: 0 0 1rem 1.25rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

@media (max-width: 1080px) {
  .metadata-strip,
  .workflow-grid,
  .feature-grid,
  .card-grid,
  .stats-grid,
  .capability-grid,
  .doc-grid,
  .example-grid,
  .blog-grid,
  .quote-grid,
  .hero-grid,
  .page-hero-grid,
  .split-grid,
  .narrative-grid,
  .two-col-grid,
  .footer-grid,
  .callout-inner {
    grid-template-columns: 1fr;
  }

  .metadata-item {
    border-left: 0;
    border-top: 1px solid rgba(16, 58, 113, 0.12);
    padding-left: 0;
    padding-top: 0.8rem;
  }

  .metadata-item:first-child {
    border-top: 0;
    padding-top: 0;
  }
}

@media (max-width: 820px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem 0;
  }

  .nav-actions {
    justify-content: flex-start;
  }

  .hero,
  .page-hero {
    padding-top: 3rem;
  }

  .section {
    padding: 3.6rem 0;
  }
}

@media (max-width: 640px) {
  .nav-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-actions,
  .nav-actions .btn,
  .nav-actions .nav-link,
  .cta-buttons .btn {
    width: 100%;
  }
}