/* Nod Web — Layout: nav, footer, page shells */

.page {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ─────────────────────────────────────────────
   NAV — floating, translucent, modern pill
───────────────────────────────────────────── */

.site-nav {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: min(calc(100% - 24px), var(--max-layout));
  height: 56px;
  padding: 0 10px 0 20px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-glass-fill);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-nav);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
}

.site-nav.is-over-dark {
  background: rgba(20, 20, 22, 0.55);
  border-color: rgba(255, 255, 255, 0.12);
}

.site-nav.is-over-dark .nav-links a {
  color: rgba(255, 255, 255, 0.72);
}
.site-nav.is-over-dark .nav-links a:hover,
.site-nav.is-over-dark .nav-links a.active {
  color: #fff;
}

.site-nav.is-over-dark .nav-logo-ink { display: none; }
.site-nav.is-over-dark .nav-logo-light { display: block; }
.site-nav:not(.is-over-dark) .nav-logo-light { display: none; }
.site-nav:not(.is-over-dark) .nav-logo-ink { display: block; }

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo img {
  height: 28px;
  width: auto;
  display: block;
}

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

.nav-links a {
  font-size: 14px;
  font-weight: var(--weight-semibold);
  color: var(--color-label-secondary);
  text-decoration: none;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: 980px;
  transition: color 150ms ease, background 150ms ease;
}

.nav-links a:hover {
  color: var(--color-label);
  opacity: 1;
  background: rgba(0, 0, 0, 0.04);
}

.nav-links a.active {
  color: var(--color-label);
}

.nav-cta {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 18px;
  margin-left: 6px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-button);
  font-size: 14px;
  font-weight: var(--weight-semibold);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 150ms ease, transform 150ms ease;
}
.nav-cta:hover { opacity: 0.88; color: #fff; }
.nav-cta:active { transform: scale(0.97); }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-label);
  margin: 0;
  transition: transform 200ms ease, opacity 200ms ease;
}
.site-nav.is-over-dark .nav-hamburger span { background: #fff; }

.nav-mobile-open .nav-hamburger span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-mobile-open .nav-hamburger span:nth-child(2) { opacity: 0; }
.nav-mobile-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

@media (max-width: 700px) {
  .site-nav {
    flex-wrap: wrap;
    height: auto;
    min-height: 56px;
    padding: 10px 12px;
    border-radius: 24px;
    width: min(calc(100% - 20px), var(--max-layout));
  }
  .nav-hamburger {
    display: flex;
    margin-left: auto;
  }
  .nav-cta {
    height: 36px;
    margin-left: 4px;
    padding: 0 14px;
  }
  .nav-links {
    display: none;
    flex: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    order: 10;
    gap: 2px;
    padding-top: 8px;
  }
  .nav-mobile-open .nav-links { display: flex; }
  .nav-links a {
    padding: 12px 14px;
    width: 100%;
  }
  .site-nav.is-over-dark .nav-links a:hover {
    background: rgba(255, 255, 255, 0.08);
  }
}

@media (max-width: 480px) {
  .nav-logo img {
    height: 24px;
  }
}

/* ─────────────────────────────────────────────
   FOOTER
───────────────────────────────────────────── */

.site-footer {
  margin-top: auto;
  padding: var(--space-7) var(--space-page) max(var(--space-5), env(safe-area-inset-bottom));
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-separator);
}

.footer-top {
  max-width: var(--max-layout);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-5);
}

.footer-brand { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-logo img { height: 24px; width: auto; opacity: 0.95; }
.footer-tagline {
  font-size: var(--text-subhead);
  color: var(--color-label-secondary);
  line-height: 1.5;
  max-width: 28ch;
}
.footer-tagline strong {
  color: var(--color-label);
  font-weight: var(--weight-semibold);
  display: block;
  margin-bottom: 4px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--color-label-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: var(--text-subhead);
  color: var(--color-label-secondary);
  text-decoration: none;
}
.footer-col a:hover { color: var(--color-label); opacity: 1; }

.footer-bottom {
  max-width: var(--max-layout);
  margin: var(--space-4) auto 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-separator);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.footer-copy {
  font-size: var(--text-caption);
  color: var(--color-label-tertiary);
}
.footer-legal { display: flex; gap: var(--space-3); }
.footer-legal a {
  font-size: var(--text-caption);
  color: var(--color-label-tertiary);
  text-decoration: none;
}
.footer-legal a:hover { color: var(--color-label-secondary); opacity: 1; }

@media (max-width: 680px) {
  .site-footer {
    padding-top: var(--space-5);
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-header {
    padding-top: calc(64px + var(--space-5));
  }
}

/* ─────────────────────────────────────────────
   PAGE SHELLS
───────────────────────────────────────────── */

.site-main { flex: 1; }

.page-header {
  padding: calc(56px + var(--space-6)) var(--space-page) var(--space-4);
  max-width: var(--max-layout);
  margin: 0 auto;
}
.page-header h1 {
  font-size: var(--text-title);
  margin-bottom: var(--space-1);
}
.page-header .page-meta {
  font-size: var(--text-caption);
  color: var(--color-label-tertiary);
}

.section {
  padding: var(--space-7) var(--space-page);
}
.section-inner {
  max-width: var(--max-layout);
  margin: 0 auto;
}