/* ============================================
   NAV.CSS — Barre de navigation fixe
   ============================================ */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 3rem;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  background: rgba(7, 7, 13, 0.78);
  transition: border-color var(--t-normal);
}

nav.scrolled {
  border-color: var(--border2);
}

/* Logo */
.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  user-select: none;
}

/* Liens */
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--t-fast);
  cursor: pointer;
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width var(--t-normal);
}
.nav-links a:hover       { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active      { color: var(--accent); }
.nav-links a.active::after { width: 100%; }

/* CTA */
.nav-cta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(124, 106, 255, 0.35);
  padding: 6px 14px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--t-normal);
  background: none;
}
.nav-cta:hover {
  background: rgba(124, 106, 255, 0.1);
  border-color: var(--accent);
}

/* Burger mobile */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: all var(--t-normal);
  border-radius: 2px;
}
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile drawer */
.nav-mobile {
  display: none;
  position: fixed;
  top: 57px; left: 0; right: 0;
  background: rgba(7, 7, 13, 0.97);
  border-bottom: 1px solid var(--border2);
  backdrop-filter: blur(22px);
  z-index: 199;
  padding: 1.5rem 2rem;
  flex-direction: column;
  gap: 1.2rem;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--t-fast);
}
.nav-mobile a:hover { color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 700px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
}