/* ─────────────────────────────────────────────
   nav.css
   Fixed top navbar, logo, nav links, hamburger
   button, and the mobile slide-down drawer.
   Responsive breakpoints are co-located here.
───────────────────────────────────────────── */

/* ─── NAVBAR ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(5,5,5,0.96);
  border-bottom: 1px solid rgba(255,229,0,0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 2rem;
  gap: 2rem;
}

/* ─── LOGO ─── */
.nav-logo {
  display: flex;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
  opacity: 0.92;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 1; }

.nav-logo-img {
  height: 30px;
  width: auto;
  display: block;
}

.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border2);
  flex-shrink: 0;
}

/* ─── NAV LINKS ─── */
.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-links li a {
  display: block;
  padding: 0.4rem 0.85rem;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  cursor: pointer;
}
.nav-links li a:hover { color: var(--white); }
.nav-links li a.active {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

/* ─── HAMBURGER ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  border: none;
  background: none;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text2);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ─── MOBILE DRAWER ─── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(10,10,10,0.98);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 1rem 0;
  backdrop-filter: blur(12px);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 0.75rem 2rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.mobile-menu a:hover { color: var(--white); background: rgba(255,255,255,0.03); }
.mobile-menu a.active { color: var(--yellow); border-left-color: var(--yellow); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  :root { --nav-h: 52px; }
  nav { padding: 0 1.25rem; }
  .nav-links, .nav-divider { display: none; }
  .hamburger { display: flex; }
}