/* ============================================================
   NAV — harri.xyz
   ============================================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: var(--space-4);
  transition: background-color var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-nav.is-scrolled {
  background-color: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}

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

/* Wordmark */
.site-nav__wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: color var(--duration-fast) var(--ease-out);
}

.site-nav__wordmark:hover {
  color: var(--color-accent);
}

/* Desktop links */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-nav__links a {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.site-nav__links .nav-contact {
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: var(--space-2) var(--space-4);
  border-radius: 2px;
  transition: background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.site-nav__links .nav-contact:hover {
  background-color: var(--color-accent);
  color: #000;
}

/* Hamburger */
.site-nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.site-nav__toggle span {
  display: block;
  height: 1px;
  background-color: var(--color-text);
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out),
              width var(--duration-base) var(--ease-out);
  transform-origin: center;
}

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

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

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

/* Mobile overlay */
.site-nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-bg);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

.site-nav__mobile.is-open {
  display: flex;
}

.site-nav__mobile a {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.site-nav__mobile a:hover {
  color: var(--color-accent);
}

/* Responsive */
@media (max-width: 640px) {
  .site-nav__links {
    display: none;
  }

  .site-nav__toggle {
    display: flex;
  }
}