/* nav.css: Multi-page navigation for tombosschaert.com */

/* ---- Fixed navigation bar ---- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem var(--side-pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease;
}

/* Scrolled state: solid dark with blur */
.site-nav--scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Transparent state (used on homepage hero) */
.site-nav--transparent {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ---- Site name / logo ---- */
.site-nav__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.site-nav__name:hover {
  color: var(--accent-copper);
  text-decoration: none;
}

/* ---- Navigation links ---- */
.site-nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__links a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.2s ease;
  position: relative;
}

.site-nav__links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.site-nav__links a.active {
  color: var(--text-primary);
}

.site-nav__links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent-copper);
}

/* ---- Hamburger (mobile) ---- */
.site-nav__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1001;
}

.site-nav__hamburger-line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

/* Active hamburger: X shape */
.site-nav__hamburger--active .site-nav__hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.site-nav__hamburger--active .site-nav__hamburger-line:nth-child(2) {
  opacity: 0;
}

.site-nav__hamburger--active .site-nav__hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- Mobile layout ---- */
@media (max-width: 768px) {
  .site-nav__hamburger {
    display: block;
  }

  .site-nav__links {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
  }

  .site-nav__links a {
    font-size: 1.5rem;
    letter-spacing: 0.15em;
  }

  .site-nav__links--open {
    opacity: 1;
    pointer-events: auto;
  }
}