/* ============================================================
   NAV.CSS — Fixed top navigation + mobile hamburger menu
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition:
    background 350ms var(--ease-out),
    backdrop-filter 350ms var(--ease-out),
    border-bottom-color 350ms ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(8, 8, 8, 0.88);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--border);
}

.nav__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* ── Logo ── */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  opacity: 0.95;
  transition: opacity 200ms ease;
  -webkit-tap-highlight-color: transparent;
}

.nav__logo:hover { opacity: 1; }

.nav__logo img {
  height: 62px;
  width: auto;
  display: block;
  filter: drop-shadow(0 0 18px rgba(255,255,255,0.2));
}

/* ── Desktop links ── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav__link {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 0.5em 0.85em;
  border-radius: var(--r-sm);
  text-decoration: none;
  position: relative;
  transition: color 180ms ease, background 180ms ease;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) and (pointer: fine) {
  .nav__link:hover {
    color: var(--text);
    background: rgba(255,255,255,0.06);
  }
}

.nav__link.active {
  color: var(--text);
}

/* Absolutely positioned so it never shifts the link's height in the flex row */
.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.85em;
  right: 0.85em;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* Store link gets accent treatment */
.nav__link--store {
  color: var(--accent);
  border: 1px solid rgba(76,201,240,0.25);
}

@media (hover: hover) and (pointer: fine) {
  .nav__link--store:hover {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent);
  }
}

/* ── Hamburger ── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--r-sm);
  -webkit-tap-highlight-color: transparent;
  transition: background 180ms ease;
}

.nav__hamburger:hover { background: rgba(255,255,255,0.06); }

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  border-radius: 1px;
  transition:
    transform 280ms var(--ease-spring),
    opacity   200ms ease,
    width     280ms var(--ease-spring);
  transform-origin: center;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile full-screen menu ── */
.nav__mobile {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 850;
  background: rgba(8,8,8,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 280ms var(--ease-out), visibility 280ms;
  padding: 2rem;
}

.nav__mobile.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 10vw, 4rem);
  color: var(--text-2);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.2;
  transition: color 180ms ease, transform 180ms var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) and (pointer: fine) {
  .nav__mobile-link:hover {
    color: var(--text);
    transform: translateX(8px);
  }
}

.nav__mobile-link.active { color: var(--accent); }

.nav__mobile-social {
  display: flex;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.nav__mobile-social a {
  color: var(--text-3);
  transition: color 180ms ease;
  -webkit-tap-highlight-color: transparent;
}

.nav__mobile-social a:hover { color: var(--text); }
.nav__mobile-social svg { width: 20px; height: 20px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
}