/* ═══════════════════════════════════════════════════════════ */
/* FILE: sections/nav.css                                     */
/* JURI PROJE — Interior Architecture                          */
/* Fixed navigation — transparent → solid on scroll           */
/* ═══════════════════════════════════════════════════════════ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-nav);
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--duration-base) var(--ease-mechanical),
    border-color var(--duration-base) var(--ease-mechanical);
  padding: var(--space-3) 0;
}

.site-header.scrolled {
  background-color: var(--color-bg-primary);
  border-bottom-color: var(--color-border);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  color: var(--color-text-inverse);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-mechanical);
}

.site-header.scrolled .nav-logo {
  color: var(--color-text-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.nav-link {
  color: var(--color-text-inverse);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-mechanical);
  position: relative;
  padding-bottom: 4px;
}

.site-header.scrolled .nav-link {
  color: var(--color-text-muted);
}

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

.nav-link.active {
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
}

/* ─── Mobile Nav ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links {
    gap: var(--space-3);
  }

  .nav-link {
    font-size: 10px;
  }
}

/* ─── Detail Page: Hide logo when back button visible ──────── */
.work-hero ~ .site-header .nav-logo,
body:has(.work-back) .site-header:not(.scrolled) .nav-logo {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-mechanical);
}

body:has(.work-back) .site-header.scrolled .nav-logo {
  opacity: 1;
  pointer-events: auto;
}