/* Layout: navigation, footer, global layout breakpoints, print */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--t-slow) var(--ease-out),
              box-shadow var(--t-slow) var(--ease-out),
              backdrop-filter var(--t-slow) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(248, 247, 245, 0.88);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 var(--clr-border), var(--shadow-sm);
}

.nav-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
  height: 68px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity var(--t-fast);
}

.nav-logo:hover { opacity: 0.8; }

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--clr-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  border-radius: var(--r-sm);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-links a {
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-secondary);
  border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--clr-text);
  background: rgba(0,0,0,0.04);
}

.nav-links a.is-active,
.nav-mobile a.is-active {
  color: var(--clr-accent);
  font-weight: 600;
}

.nav-cta { margin-left: auto; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
}

.nav-toggle:hover { background: rgba(0,0,0,0.05); }

.nav-toggle span {
  display: block;
  height: 1.75px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--t-med) var(--ease), opacity var(--t-med);
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6.75px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.75px) rotate(-45deg); }

.nav-mobile {
  display: none;
  background: rgba(248, 247, 245, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--clr-border);
  padding: 20px var(--container-px) 28px;
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-mobile a {
  display: block;
  padding: 10px 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-text);
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
}

.nav-mobile a:hover { background: rgba(0,0,0,0.04); }

.nav-mobile .btn {
  margin-top: 8px;
  width: 100%;
  justify-content: center;
}

.site-footer {
  background: #090604;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-logo .logo-text { color: #fff; }

.footer-brand p {
  font-size: 0.875rem;
  color: var(--clr-dark-muted);
  line-height: 1.65;
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col li,
.footer-col a {
  font-size: 0.875rem;
  color: var(--clr-dark-muted);
  transition: color var(--t-fast);
  line-height: 1.4;
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
}

.footer-bottom p {
  font-size: 0.825rem;
  color: var(--clr-dark-muted);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 0.825rem;
  color: var(--clr-dark-muted);
  transition: color var(--t-fast);
}

.footer-legal a:hover { color: #fff; }

@media (max-width: 1024px) {
  .nav-links,
  .nav-cta { display: none; }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .nav-mobile.is-open { display: block; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand { grid-column: auto; }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .nav-mobile { padding: 16px 20px 24px; }
}

@media print {
  .site-header,
  .nav-toggle,
  .nav-mobile,
  .hero-visual,
  .float-chip,
  .section-contact,
  .site-footer { display: none; }

  .reveal {
    opacity: 1;
    transform: none;
  }
}