/* =============================================================
   COMPONENT — NAVBAR
   ============================================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: 72px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition-base),
              border-color var(--transition-base),
              backdrop-filter var(--transition-base);
}

/* Scrolled state — added via JS */
.navbar.is-scrolled {
  background: rgba(8, 8, 13, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.navbar__inner {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* --- Logo --- */
.navbar__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.navbar__logo img {
  height: 36px;
  width: auto;
  display: block;
}

/* --- Nav Links --- */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.navbar__link:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

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

/* --- Nav Actions --- */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Cart button */
.navbar__cart {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.navbar__cart:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.navbar__cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  color: #fff;
  font-size: 10px;
  font-weight: var(--weight-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.navbar__cart-badge.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* --- Mobile menu toggle --- */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.navbar__toggle:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.navbar__toggle span {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.navbar__toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.navbar__toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* --- Mobile Menu --- */
.navbar__mobile {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(8, 8, 13, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: calc(var(--z-sticky) - 1);
  flex-direction: column;
  padding: var(--space-8) var(--container-pad);
  border-top: 1px solid var(--color-border);
  overflow-y: auto;

  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.navbar__mobile.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.navbar__mobile-link {
  display: block;
  font-size: var(--text-2xl);
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.navbar__mobile-link:hover {
  color: var(--color-text-primary);
}

.navbar__mobile-link:last-child {
  border-bottom: none;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .navbar__nav { display: none; }
  .navbar__toggle { display: flex; }
  .navbar__mobile { display: flex; }

  .navbar__actions .btn {
    display: none;
  }
}