/* ==========================================
   SITE NAVIGATION
   ========================================== */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(10, 13, 18, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-nav__brand {
  font-family: var(--font-mono);
  font-size: var(--step-0);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-nav__brand:hover { color: var(--text); }

.site-nav__brand-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2.25rem);
  font-family: var(--font-mono);
  font-size: var(--step--1);
}

.site-nav__links a {
  color: var(--text-dim);
  position: relative;
  padding-block: 0.3rem;
  margin-left: clamp(1.25rem, 2.5vw, 2.25rem);
}

.site-nav__links a:first-child { margin-left: 0; }

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

.site-nav__links a[aria-current="page"] {
  color: var(--accent);
}

.site-nav__links a[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--accent);
}

.site-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.site-nav__toggle svg { stroke: var(--text); }

@media (max-width: 720px) {
  .site-nav__toggle { display: flex; }

  .site-nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem var(--gutter) 1rem;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), visibility var(--dur-fast);
  }

  .site-nav__links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav__links a {
    width: 100%;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
    font-size: var(--step-0);
  }
}