/* ═══════════════════════════════════════════════
   NAVIGATION — Dark terminal style
   ═══════════════════════════════════════════════ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Logo ── */
.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 6px;
  color: var(--color-accent);
  text-transform: uppercase;
  text-shadow: 0 0 10px var(--color-accent);
  transition: text-shadow var(--duration-normal);
}

.nav-logo:hover {
  text-shadow: 0 0 12px var(--color-accent-glow);
}

/* ── Links ── */
.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-links a {
  display: block;
  padding: var(--space-2) 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  border-radius: 0;
  border-left: 1px solid transparent;
  transition:
    color var(--duration-fast),
    background var(--duration-fast),
    text-shadow var(--duration-fast);
}

.nav-links a::before {
  content: './';
  opacity: 0.4;
  color: var(--color-text-muted);
}

.nav-links a:hover {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border-left-color: var(--color-border);
  text-shadow: 0 0 8px var(--color-accent);
}

.nav-links a.active {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border-left-color: var(--color-border);
  text-shadow: 0 0 8px var(--color-accent);
}

.nav-links a.active::before {
  color: var(--color-accent);
  opacity: 0.6;
}

/* ── Mobile Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: transform var(--duration-normal) var(--ease-out);
}

/* ── Spacer (push content below fixed nav) ── */
body {
  padding-top: var(--nav-height);
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    backdrop-filter: blur(var(--nav-blur));
    -webkit-backdrop-filter: blur(var(--nav-blur));
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--content-padding);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition:
      transform var(--duration-normal) var(--ease-out),
      opacity var(--duration-normal) var(--ease-out);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
  }
}