/* Fixed, not sticky: fixed is promoted to its own compositing layer from the
   start, avoiding first-frame paint glitches (lesson from ../johnwest_music).
   It doesn't reserve space in the flow, so content below carries top padding
   to clear it. */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 1rem 1.5rem;
  background: var(--bar);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-brand:hover,
.nav-brand:focus-visible {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 22px;
  height: 22px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--muted);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

/* (hover: hover) excludes touchscreens: without it, tapping the button
   leaves it stuck gold until the visitor taps elsewhere. */
@media (hover: hover) {
  .nav-toggle:hover span {
    background: var(--accent);
  }
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Below this the links collapse into a toggled dropdown. .nav-links goes
   absolute (relative to .site-nav) so it leaves the flex row, and
   space-between pushes .nav-toggle to the right edge. */
@media (max-width: 700px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bar);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .nav-links.open {
    max-height: 300px;
  }

  .nav-links a {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-links,
  .nav-toggle span {
    transition: none;
  }
}