/* Shared chrome: nav, buttons, footer, forms, utilities */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--nav-h);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  background: rgba(12, 14, 18, 0.45);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(12, 14, 18, 0.92);
  border-bottom-color: var(--border);
}

.nav-inner {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--text-on-accent) !important;
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  transition: background 0.2s var(--ease), transform 0.15s var(--ease);
}

.nav-cta:hover {
  background: var(--accent-hover);
}

.nav-cta:active {
  transform: scale(0.98);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  position: relative;
  transition: transform 0.2s var(--ease);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

.brand-mark {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.brand-mark span {
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.35rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.15s var(--ease);
}

.btn:active {
  transform: scale(0.98) translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--text-on-accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding-inline: 0.75rem;
}

.btn-ghost:hover {
  color: var(--accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 1.5rem;
  background: var(--bg-elevated);
}

.footer-grid {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-brand img {
  height: 36px;
  width: auto;
  margin-bottom: 1rem;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 36ch;
}

.footer-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.cert-badge {
  font-size: 0.75rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--bg);
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.footer-col ul {
  display: grid;
  gap: 0.65rem;
}

.footer-col a,
.footer-col p {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin: 2.5rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom a:hover {
  color: var(--accent);
}

.cta-band {
  padding: clamp(4rem, 8vw, 6rem) 0;
  background:
    radial-gradient(ellipse 60% 90% at 85% 30%, var(--accent-soft), transparent 55%),
    linear-gradient(180deg, var(--bg-muted), #10141b);
  border-block: 1px solid var(--border);
}

.cta-band-inner {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  display: grid;
  gap: 1.25rem;
  max-width: 48rem;
}

.cta-band h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  font-weight: 700;
}

.cta-band p {
  color: var(--text-secondary);
  max-width: 48ch;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 0.5rem;
}

.cta-meta {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--nav-h) + 3rem) 0 3.75rem;
  min-height: auto;
  background:
    radial-gradient(ellipse 70% 80% at 90% 0%, var(--accent-soft), transparent 55%),
    linear-gradient(180deg, #12151c 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, #000 20%, transparent 90%);
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  max-width: 48rem;
}

.page-hero h1 {
  font-size: clamp(2.15rem, 4.6vw, 3.25rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.page-hero .lead {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 52ch;
  line-height: 1.7;
}

.page-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.stat-strip {
  border-block: 1px solid var(--border);
  background:
    linear-gradient(90deg, var(--accent-soft), transparent 40%, transparent 60%, var(--accent-soft)),
    var(--bg-elevated);
}

.stat-strip-inner {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 2.25rem 0;
}

.stat-item {
  display: grid;
  gap: 0.3rem;
  padding-right: 1rem;
  border-right: 1px solid var(--border);
}

.stat-item:last-child {
  border-right: 0;
}

.stat-num {
  font-size: clamp(1.75rem, 3.2vw, 2.4rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .stat-item {
    border-right: 0;
    padding-right: 0;
  }
}

.media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-muted);
  box-shadow: var(--shadow);
}

.section-surface {
  background: var(--bg-muted);
  border-block: 1px solid var(--border);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.feature-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.feature-list li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
}

.feature-list li i {
  color: var(--accent);
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.split.reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.split.reverse > :first-child {
  order: 2;
}

/* trust-bar styles live in home.css for homepage composition */

@media (max-width: 1024px) {
  .nav-toggle {
    display: grid;
  }

  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem var(--gutter) 1.5rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border);
  }

  .nav-links a {
    display: block;
    padding: 0.95rem 0;
  }

  .nav-cta {
    margin-top: 0.75rem;
    width: 100%;
  }

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

  .stat-strip-inner {
    grid-template-columns: 1fr 1fr;
  }

  .split,
  .split.reverse {
    grid-template-columns: 1fr;
  }

  .split.reverse > :first-child {
    order: 0;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stat-strip-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}