/* ─── SITE NAVIGATION ────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  margin-bottom: 2rem;
}

.site-nav .logo a {
  display: flex;
  align-items: center;
}

.site-nav .logo svg {
  height: 2.5rem;
  width: auto;
}

/* ─── NAV LINKS ──────────────────────────────────────────────────────── */
.site-nav .nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav .nav-links a {
  color: var(--fg);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.site-nav .nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.2s ease;
}

.site-nav .nav-links a:hover {
  color: var(--brand);
  text-decoration: none;
}

.site-nav .nav-links a:hover::after {
  width: 100%;
}

.site-nav .nav-links .active {
  color: var(--brand);
}

.site-nav .nav-links .active::after {
  width: 100%;
}

/* ─── MOBILE TOGGLE (CSS-only, no JS required) ───────────────────────── */
.nav-toggle-checkbox {
  display: none;
}

.nav-toggle {
  display: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--fg);
  margin: 5px 0;
  transition: 0.2s;
}

/* Animate hamburger to X */
.site-nav .nav-toggle-checkbox:checked + .nav-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.site-nav .nav-toggle-checkbox:checked + .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-nav .nav-toggle-checkbox:checked + .nav-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── MOBILE RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 600px) {
  .site-nav {
    position: relative;
    flex-wrap: wrap;
    padding: 0.5rem 1rem;
    margin-bottom: 0.5rem;
  }

  .site-nav .logo svg {
    height: 2rem;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    padding: 0;
    gap: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    border-radius: 0 0 0.5rem 0.5rem;
    z-index: 100;
    transition: opacity 0.2s ease, visibility 0.2s ease;
  }

  .nav-toggle-checkbox:checked ~ .nav-links {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav .nav-links li {
    padding: 0;
  }

  .site-nav .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
  }

  .site-nav .nav-links a:hover,
  .site-nav .nav-links a.active {
    background: rgba(var(--brand-rgb), 0.1);
  }

  .site-nav .nav-links a::after {
    display: none;
  }
}