/* ═══════════════════════════════════════════════════════
   CDS UNIFIED SITE HEADER & FOOTER
   Inject this into ALL pages for brand consistency.
   Dark frame wraps light content = "reading mode" effect.
   ═══════════════════════════════════════════════════════ */

/* ─── VARIABLES (match homepage V5) ─── */
:root {
  --cds-bg-deep:    #070a0f;
  --cds-bg-primary: #0b0f14;
  --cds-bg-raised:  #0e1219;
  --cds-bg-surface: #121820;
  --cds-steel:      #5b8fb9;
  --cds-steel-bright:#7db4e0;
  --cds-steel-dim:  rgba(91,143,185,0.10);
  --cds-steel-glow: rgba(91,143,185,0.20);
  --cds-gold:       #c8a45c;
  --cds-white:      #ffffff;
  --cds-text:       #c8cdd4;
  --cds-text-dim:   #7a8494;
  --cds-text-muted: #4a5568;
  --cds-border:     rgba(255,255,255,0.06);
  --cds-border-vis: rgba(255,255,255,0.10);
  --cds-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --cds-mono: 'JetBrains Mono', 'SF Mono', monospace;
}


/* ═══════════════ UNIFIED HEADER ═══════════════ */
.cds-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11,15,20,0.95);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  border-bottom: 1px solid var(--cds-border);
  padding: 0 clamp(16px, 4vw, 48px);
  font-family: var(--cds-sans);
  transition: background .4s, border-color .4s, backdrop-filter .4s;
}
/* Homepage: start transparent, solidify on scroll */
.cds-header.cds-header--transparent {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
}
.cds-header.cds-header--transparent.scrolled {
  background: rgba(11,15,20,0.95);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  border-bottom-color: var(--cds-border);
}
.cds-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.cds-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.cds-header-logo {
  height: 30px;
  width: auto;
}
.cds-header-wordmark {
  font-size: 14px;
  font-weight: 600;
  color: var(--cds-white);
  letter-spacing: -.2px;
}
.cds-header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.cds-header-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--cds-text-dim);
  text-decoration: none;
  letter-spacing: .2px;
  transition: color .3s;
  position: relative;
}
.cds-header-link:hover,
.cds-header-link.active {
  color: var(--cds-white);
}
.cds-header-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--cds-steel);
}
.cds-header-cta {
  font-family: var(--cds-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--cds-white);
  padding: 8px 18px;
  border-radius: 5px;
  background: var(--cds-steel);
  text-decoration: none;
  letter-spacing: .2px;
  transition: all .3s;
  white-space: nowrap;
}
.cds-header-cta:hover {
  background: var(--cds-steel-bright);
  box-shadow: 0 4px 16px var(--cds-steel-glow);
}

/* Mobile toggle */
.cds-header-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.cds-header-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--cds-text-dim);
  transition: all .3s;
}
.cds-header-toggle.open span:first-child {
  transform: rotate(45deg) translate(2px, 2px);
}
.cds-header-toggle.open span:last-child {
  transform: rotate(-45deg) translate(2px, -2px);
}

/* Mobile dropdown */
.cds-header-mobile {
  display: none;
  flex-direction: column;
  padding: 12px 0 20px;
  gap: 4px;
  background: var(--cds-bg-primary);
  border-bottom: 1px solid var(--cds-border);
}
.cds-header-mobile.open {
  display: flex;
}
.cds-header-mobile a {
  font-family: var(--cds-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--cds-text-dim);
  text-decoration: none;
  padding: 10px clamp(16px, 4vw, 48px);
  transition: color .3s;
}
.cds-header-mobile a:hover {
  color: var(--cds-white);
}
.cds-header-mobile a.cds-mobile-cta {
  color: var(--cds-steel);
  font-weight: 600;
}


/* ═══════════════ UNIFIED FOOTER ═══════════════ */
.cds-footer {
  background: var(--cds-bg-deep);
  border-top: 1px solid var(--cds-border);
  padding: 60px clamp(16px, 4vw, 48px) 40px;
  font-family: var(--cds-sans);
}
.cds-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.cds-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.cds-footer-brand-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--cds-white);
  margin-bottom: 8px;
}
.cds-footer-brand-loc {
  font-size: 13px;
  color: var(--cds-text-muted);
  margin-bottom: 16px;
}
.cds-footer-contact-link {
  display: block;
  font-size: 13px;
  color: var(--cds-text-dim);
  text-decoration: none;
  margin-bottom: 6px;
  transition: color .3s;
}
.cds-footer-contact-link:hover {
  color: var(--cds-steel);
}
.cds-footer-col-title {
  font-family: var(--cds-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cds-steel);
  margin-bottom: 16px;
}
.cds-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.cds-footer-links li {
  margin-bottom: 8px;
}
.cds-footer-links a {
  font-size: 13px;
  color: var(--cds-text-dim);
  text-decoration: none;
  transition: color .3s;
}
.cds-footer-links a:hover {
  color: var(--cds-white);
}
.cds-footer-divider {
  height: 1px;
  background: var(--cds-border);
  margin-bottom: 24px;
}
.cds-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.cds-footer-copyright {
  font-size: 12px;
  color: var(--cds-text-muted);
}
.cds-footer-creds {
  font-family: var(--cds-mono);
  font-size: 11px;
  color: var(--cds-text-muted);
  letter-spacing: .5px;
}
.cds-footer-legal {
  display: flex;
  gap: 16px;
}
.cds-footer-legal a {
  font-size: 12px;
  color: var(--cds-text-muted);
  text-decoration: none;
  transition: color .3s;
}
.cds-footer-legal a:hover {
  color: var(--cds-text-dim);
}

/* ═══════════════ RESPONSIVE ═══════════════ */
@media (max-width: 900px) {
  .cds-header-nav,
  .cds-header-cta { display: none; }
  .cds-header-toggle { display: flex; }
  .cds-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 600px) {
  .cds-footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cds-footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}