/* ==========================================================================
   BLCKGROOVE — Navbar
   Starts transparent over the hero, transitions to a dark translucent bar
   with backdrop blur once the page scrolls. Kept restrained: one blur value,
   one border, one shadow — no heavy glassmorphism.
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    height var(--duration-mid) var(--ease-standard),
    background-color var(--duration-mid) var(--ease-standard),
    border-color var(--duration-mid) var(--ease-standard),
    box-shadow var(--duration-mid) var(--ease-standard);
}

.navbar.is-scrolled {
  height: var(--nav-height-scrolled);
  background-color: rgba(14, 14, 17, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-black-line);
  box-shadow: var(--shadow-nav);
}

.navbar__inner {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--edge-padding);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-5);
}

/* ---- Logo ---- */

.navbar__brand {
  display: flex;
  align-items: center;
  height: 100%;
}

.navbar__logo {
  height: 34px;
  width: auto;
  transition: height var(--duration-mid) var(--ease-standard);
}

.navbar.is-scrolled .navbar__logo {
  height: 28px;
}

/* ---- Desktop links ---- */

.navbar__links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-6);
}

.navbar__link {
  position: relative;
  font-size: var(--nav-link-size);
  font-weight: 600;
  letter-spacing: var(--nav-link-tracking);
  text-transform: uppercase;
  color: var(--color-bone);
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease-standard);
}

.navbar__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--color-red-hot);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.navbar__link:hover,
.navbar__link:focus-visible {
  color: var(--color-white);
}

.navbar__link:hover::after,
.navbar__link:focus-visible::after {
  transform: scaleX(1);
}

.navbar__link.is-active {
  color: var(--color-white);
}

.navbar__link.is-active::after {
  transform: scaleX(1);
}

/* ---- CTA ---- */

.navbar__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-red-hot);
  color: var(--color-white);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: var(--nav-link-tracking);
  text-transform: uppercase;
  border-radius: 2px;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.navbar__cta:hover,
.navbar__cta:focus-visible {
  background: var(--color-red);
  transform: translateY(-1px);
}

.navbar__cta-arrow {
  transition: transform var(--duration-fast) var(--ease-standard);
}

.navbar__cta:hover .navbar__cta-arrow {
  transform: translate(2px, -2px);
}

/* ---- Mobile trigger (hidden on desktop) ---- */

.navbar__trigger {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-1);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: var(--nav-link-tracking);
  text-transform: uppercase;
  color: var(--color-white);
}

.navbar__trigger-bars {
  position: relative;
  width: 22px;
  height: 16px;
}

.navbar__trigger-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 1px;
  transition:
    transform var(--duration-mid) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard),
    top var(--duration-mid) var(--ease-standard);
}

.navbar__trigger-bars span:nth-child(1) { top: 0; }
.navbar__trigger-bars span:nth-child(2) { top: 7px; }
.navbar__trigger-bars span:nth-child(3) { top: 14px; }

/* trigger morphs into an X while the mobile menu is open */
body.menu-open .navbar__trigger-bars span:nth-child(1) {
  top: 7px;
  transform: rotate(45deg);
}
body.menu-open .navbar__trigger-bars span:nth-child(2) {
  opacity: 0;
}
body.menu-open .navbar__trigger-bars span:nth-child(3) {
  top: 7px;
  transform: rotate(-45deg);
}