/* ============================================================
   nav.css — Fixed navigation bar + mobile hamburger
   ============================================================ */

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 3rem;
  background: rgba(9,9,11,0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.7rem; letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--blue);
  text-shadow: 0 0 20px var(--blue-glow);
}
.nav-logo span {
  color: var(--yellow);
  text-shadow: 0 0 16px var(--yellow-glow);
}

.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-muted); text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue); }

.nav-cta {
  font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--bg); background: var(--yellow);
  padding: 0.5rem 1.3rem; text-decoration: none; font-weight: 500;
  transition: box-shadow 0.2s, transform 0.15s;
}
.nav-cta:hover { box-shadow: 0 0 22px var(--yellow-glow); transform: translateY(-1px); }

/* ── Hamburger button (hidden on desktop) ── */
.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 0.25rem; z-index: 600;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--blue);
  transition: transform 0.25s ease, opacity 0.2s ease, background 0.2s;
}

/* open state */
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--yellow); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--yellow); }

/* ── Mobile drawer ── */
.nav-mobile-drawer {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(9,9,11,0.97);
  backdrop-filter: blur(20px);
  z-index: 400;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.nav-mobile-drawer.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}
.nav-mobile-drawer a {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.8rem; letter-spacing: 0.08em;
  color: var(--fg); text-decoration: none;
  transition: color 0.2s;
}
.nav-mobile-drawer a:hover,
.nav-mobile-drawer a.nav-active { color: var(--yellow); }
.nav-mobile-drawer .drawer-cta {
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--bg); background: var(--yellow);
  padding: 0.9rem 2.5rem; margin-top: 1rem;
}

/* ── Mobile breakpoint ── */
@media (max-width: 960px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .nav-cta   { display: none; }
  .nav-hamburger { display: flex; }
}