.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(7,9,15,0.72) 0%, rgba(7,9,15,0.35) 100%);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease-out-expo), border-color 0.4s var(--ease-out-expo);
}
.nav[data-state="scrolled"] {
  background: rgba(7,9,15,0.86);
  border-bottom-color: var(--hairline);
}

.nav__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gutter);
  transition: padding 0.4s var(--ease-out-expo);
  width: 100%;
}
.nav[data-state="scrolled"] .nav__inner { padding: 12px var(--gutter); }

/* Brand sits on the left */
.nav__brand { justify-self: start; }

/* Links pill sits dead centre */
.nav__links { 
  display: flex; 
  gap: 4px;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
}

/* CTA cluster sits on the right */
.nav__cta-wrapper { 
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav[data-state="scrolled"] .nav__inner { padding: 12px var(--gutter); }

/* Brand */
.nav__brand {
  display: inline-flex; align-items: center; gap: 12px;
  text-decoration: none;
}
.nav__brand-dot {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--teal);
  box-shadow: 0 0 12px rgba(20,224,213,0.6);
  animation: navPulse 2.4s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes navPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.25); }
}
.nav__logo { height: 36px; width: auto; }
.nav__brand-meta {
  display: flex; flex-direction: column; line-height: 1;
  border-left: 1px solid var(--hairline);
  padding-left: 0px;
}
.nav__brand-name {
  font-size: 0.875rem; font-weight: 700; letter-spacing: 0.02em;
  color: var(--text);
}
.nav__brand-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem; letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Links pill */
.nav__links {
  display: flex; gap: 4px;
  justify-self: center;
  padding: 6px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
}
.nav__links a {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  font-size: 0.8125rem; font-weight: 500;
  color: var(--text-muted);
  border-radius: 999px;
  transition: color 0.3s var(--ease-out-expo), background 0.3s var(--ease-out-expo);
}
.nav__links a::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 0.625rem; letter-spacing: 0.1em;
  color: var(--teal);
  opacity: 0.6;
  transition: opacity 0.3s;
}
.nav__links a:hover,
.nav__links a.is-active {
  color: var(--text);
  background: rgba(20,224,213,0.08);
}
.nav__links a.is-active {
  background: linear-gradient(135deg, rgba(20,224,213,0.14), rgba(139,209,124,0.08));
  box-shadow: inset 0 0 0 1px rgba(20,224,213,0.25);
}
.nav__links a:hover::before,
.nav__links a.is-active::before { opacity: 1; }

/* CTA */
.nav__cta {
  position: relative;
  font-size: 0.875rem; font-weight: 700;
  padding: 11px 18px;
  display: inline-flex; align-items: center; gap: 10px;
  overflow: hidden;
}
.nav__cta::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.18) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease-out-expo);
  pointer-events: none;
}
.nav__cta:hover::after { transform: translateX(120%); }
.nav__cta-arrow {
  display: inline-flex;
  transition: transform 0.4s var(--ease-out-expo);
}
.nav__cta:hover .nav__cta-arrow { transform: translateX(4px); }

/* Progress bar */
.nav__progress {
  position: absolute; bottom: 0; left: 0;
  height: 2px; width: 100%;
  background: var(--gradient-brand);
  transform: scaleX(0); transform-origin: left center;
  transition: none;
  will-change: transform;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  width: 36px; height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none; border: none; cursor: pointer;
}
.nav__hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: transform 0.4s var(--ease-out-expo), opacity 0.3s;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Responsive breakpoints */
@media (max-width: 1180px) {
  .nav__brand-meta { display: none; }
}
@media (max-width: 980px) {
  .nav__links { display: none; }
}
@media (max-width: 840px) {
  .nav__cta        { display: none; }
  .nav__hamburger  { display: flex; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--bg);
  background-image: radial-gradient(circle at 80% 20%, rgba(20,224,213,0.08), transparent 60%);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(-100%);
  transition: transform 0.6s var(--ease-out-expo);
  padding: 80px var(--gutter) 40px;
}
.mobile-menu.is-open { transform: translateY(0); }
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
  width: 100%;
  max-width: 400px;
}
.mobile-menu nav a {
  font-size: clamp(2rem, 7vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo), color 0.3s;
}
.mobile-menu.is-open nav a { opacity: 1; transform: translateY(0); }
.mobile-menu nav a:hover { color: var(--teal); }
.mobile-menu__cta {
  font-size: 1rem !important;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal) !important;
  font-weight: 600 !important;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
  width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  .nav__brand-dot { animation: none; }
  .nav__cta::after { transition: none; }
  .nav__cta-arrow { transition: none; }
}