/* ============================================================
   nav-footer.css — styles du header et du footer communs
   Inclure APRÈS style.css dans chaque page
   (ou fusionner dans style.css si on préfère un seul fichier)
   ============================================================ */

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 3rem;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--border);
}

.nav-logo {
  font-family: var(--font-title);
  font-size: 1.4rem;
  letter-spacing: 0.12em;
  color: var(--white);
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent-light); }

/* Burger mobile */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(255,255,255,0.7);
  transition: opacity 0.2s;
}

/* Offset pour le contenu sous la nav fixe */
main > section:first-child,
main > .page-hero:first-child { padding-top: calc(6rem + 70px); }

/* ─── FOOTER ─── */
footer {
  background: var(--sky);
  padding: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 0.5px solid var(--border);
}

.footer-logo {
  font-family: var(--font-title);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
}
.footer-logo span { color: var(--accent); }

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent-light); }

.footer-legal {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.05em;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 800px) {
  nav { padding: 1rem 1.5rem; }
  .nav-burger { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10,22,40,0.98);
    padding: 1rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.75rem 2rem; }

  footer {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
}