/* ============================================================
   AVIATOOLS.AI — Navigation & Footer
   nav.css · v2.0
   ============================================================ */

/* ── Sticky Nav ── */
#nav {
  position: sticky;
  top: 0;
  z-index: 800;
  background: rgba(6,10,16,0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  gap: 1rem;
}
.nav-logo {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--gold);
  text-decoration: none;
  letter-spacing: .1em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: opacity .2s;
}
.nav-logo::before { content: "◈"; font-size: 10px; }
.nav-logo:hover { opacity: .85; }

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--paper2);
  text-decoration: none;
  transition: color .2s;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active { color: var(--gold); }

.btn-nav {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 8px 18px;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all .2s;
  border-radius: var(--radius);
  white-space: nowrap;
}
.btn-nav:hover { background: var(--gold-faint); }

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--paper2);
  transition: all .25s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  background: rgba(6,10,16,0.98);
  border-bottom: 1px solid var(--rule);
  padding: 1rem var(--gutter);
  gap: .75rem;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--paper2);
  text-decoration: none;
  padding: .5rem 0;
  border-bottom: 1px solid var(--rule2);
}
.nav-mobile a:hover { color: var(--gold); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .btn-nav { padding: 7px 14px; font-size: 9px; }
}
@media (max-width: 400px) { .btn-nav { display: none; } }

/* ── Page breadcrumb (sub-pages) ── */
.page-breadcrumb {
  border-bottom: 1px solid var(--rule);
  background: rgba(12,18,25,0.8);
}
.breadcrumb-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: .6rem var(--gutter);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--dim);
}
.breadcrumb-inner a { color: var(--dim); text-decoration: none; transition: color .2s; }
.breadcrumb-inner a:hover { color: var(--gold); }
.breadcrumb-inner .sep { opacity: .4; }
.breadcrumb-inner .current { color: var(--paper2); }

/* ── Footer ── */
footer {
  background: var(--ink);
  border-top: 1px solid var(--rule);
  padding: 3.5rem 0 2rem;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand-mark {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: .75rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand-mark::before { content: "◈"; font-size: 11px; }
.footer-brand-desc {
  font-size: 12.5px;
  color: var(--paper2);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.08);
  padding: 5px 12px;
  border-radius: 1px;
  transition: all .2s;
}
.footer-social a:hover { color: var(--gold); border-color: rgba(200,168,75,0.3); }
.footer-col-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--paper2);
  margin-bottom: 1rem;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.footer-links a {
  font-size: 13px;
  color: var(--paper2);
  text-decoration: none;
  transition: color .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--rule);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--dim);
  letter-spacing: .08em;
}
.footer-disclaimer {
  font-size: 11px;
  color: var(--dim);
  max-width: 560px;
  line-height: 1.65;
}

@media (max-width: 860px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
}