nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 0;
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

nav.scrolled {
  border-color: var(--border);
  backdrop-filter: blur(20px);
  background: rgba(8, 12, 16, 0.85);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Top progress bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-dark), var(--accent));
  z-index: 200;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--accent);
}

@media (max-width: 600px) {
  .nav-links {
    display: none;
  }
}

.blink {
  animation: blink 1s step-end infinite;
  color: var(--accent);
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}