/**
 * النخبة — Mobile bottom navigation (glass dark luxury)
 */

.an-bottom-nav {
  position: fixed;
  bottom: 0;
  inset-inline: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--an-border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.5);
}

.an-bottom-nav::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--an-gold-dark), var(--an-gold), var(--an-gold-dark), transparent);
  background-size: 200% 100%;
  animation: anShimmer 5s linear infinite;
}

.an-bottom-nav__tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding-block: 0.625rem;
  color: var(--an-fg-subtle);
  text-decoration: none;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color var(--an-transition);
  position: relative;
  overflow: hidden;
}

.an-bottom-nav__tab::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 2px;
  background: var(--an-gold);
  border-radius: 0 0 2px 2px;
  transform: scaleX(0);
  transition: transform var(--an-transition);
}

.an-bottom-nav__tab:hover,
.an-bottom-nav__tab.is-active {
  color: var(--an-gold);
}

.an-bottom-nav__tab.is-active::before {
  transform: scaleX(1);
}

.an-bottom-nav__tab.is-active .an-bottom-nav__icon {
  filter: drop-shadow(0 0 6px rgba(201,168,76,0.6));
}

.an-bottom-nav__icon {
  width: 1.375rem;
  height: 1.375rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: filter var(--an-transition);
}